CN212008263U - Device for measuring frictional resistance of horizontal rotating spherical hinge interface - Google Patents
Device for measuring frictional resistance of horizontal rotating spherical hinge interface Download PDFInfo
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- CN212008263U CN212008263U CN202020616178.XU CN202020616178U CN212008263U CN 212008263 U CN212008263 U CN 212008263U CN 202020616178 U CN202020616178 U CN 202020616178U CN 212008263 U CN212008263 U CN 212008263U
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Abstract
The utility model discloses a survey device of spherical hinge interface frictional resistance that turns horizontally, include: a spherical hinge structure, a load system and a traction system; the spherical hinge structure comprises an upper spherical hinge structure, a lower spherical hinge structure, a positioning pin shaft and a spherical hinge positioning support; the load system comprises a loading plate, a plurality of supporting feet, a level gauge, a dead weight block and a dead weight block placing rack; the traction system is integrally installed on the outer side of the spherical hinge structure and comprises an angle-adjusting fixed pulley, a traction pulley, an electronic digital display tension meter, a steel strand, a tractor and a slideway. The utility model can realize the accurate measurement of the spherical hinge interface frictional resistance of different tonnages, spherical hinge sizes and spherical hinge materials, is used for guiding engineering construction, and provides theoretical basis and data reference for actual engineering construction; the utility model discloses can also be used to survey different spherical hinge interface lubricating material's coefficient of friction for the research and development of spherical hinge interface lubricating material turns.
Description
Technical Field
The utility model relates to a traffic civil engineering technical field, more specifically say, relate to a survey device of ball pivot interface frictional resistance is turned to level.
Background
With the accelerated development of highway and railway infrastructure in recent years, the road network density in China is obviously increased, and the problem of the stereo crossing between a newly-built bridge and the existing highway and railway is increasingly common. In order to reduce the influence of the construction of the ascending bridge on the descending traffic (particularly the railway operation), more and more bridges are constructed by adopting the horizontal turning. In the process of rotating bridge construction, the rotating spherical hinge part is a core component of a bridge rotating body, mainly plays a role in bearing the quality of an upper structure, and can also be used as a balance system to adjust the posture of the bridge and control the eccentric distance of a rotating structure.
Under the action of the self-weight of the upper structure of the bridge, the relative displacement between the upper spherical hinge and the lower spherical hinge in the rotation process of the spherical hinges can cause sliding friction and sliding friction force to be generated between the two spherical hinges, and the frictional resistance between the interfaces of the upper spherical hinge and the lower spherical hinge determines the frictional resistance between the spherical hinges. At present, the friction force of the horizontal swivel spherical hinge interface is mainly determined by combining theoretical calculation and field measurement. Through regarding whole rotor as the rigid body to exert turning torque, the rotor will be around the ball pivot to be the rigid body and rotate, get into the dynamic friction state from static state as the rotor, when taking place the displacement mutation of rotating promptly, the rotor just is in moment balance's critical state under the effect of the turning torque of applying, unbalanced moment and static friction resistance moment, can try to get the unbalanced moment of rotor according to static equilibrium equation, establish the computational math model of ball pivot friction resistance moment, deduce ball pivot friction resistance moment and static friction coefficient computational formula. The unbalanced moment of the bridge and the frictional resistance moment of the spherical hinge can be obtained through the unbalanced weighing test of the spherical hinge method.
At present, related researches on measuring the frictional resistance of the interface of the horizontal swivel ball joint are few, and particularly, the indoor test for measuring the frictional resistance of the interface of the horizontal swivel ball joint is almost none. In order to accurately acquire the frictional resistance of the horizontal swivel ball joint interface, it is necessary to develop a measuring device and a testing method capable of testing the frictional resistance of the horizontal swivel ball joint interface, and under the testing method, different swivel ball joint interface lubricating materials can be developed. In addition, a device and a method for measuring the frictional resistance of the spherical hinge interface of the indoor horizontal rotator can be used for guiding engineering construction and providing theoretical basis and data reference for actual engineering construction.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to provide a survey device of spherical hinge interface frictional resistance is turned to level, its concrete technical scheme as follows:
a device for measuring frictional resistance of a horizontal swivel ball joint interface comprises:
the spherical hinge structure comprises an upper spherical hinge structure, a lower spherical hinge structure and a positioning pin shaft arranged at the centers of the upper spherical hinge structure and the lower spherical hinge structure; the upper spherical hinge structure and the lower spherical hinge structure can rotate relative to the positioning pin shaft; the lower spherical hinge structure is fixed with the ground through a spherical hinge positioning bracket;
the loading system comprises a loading plate, a plurality of supporting feet, a level gauge, a dead weight block and a dead weight block placing frame; the bottom of the loading plate is fixed with the upper spherical hinge structure, and the interior of the upper spherical hinge structure is filled with active powder concrete; the top of the loading plate is provided with the dead weight block placing frame, and the dead weight block is detachably fixed in the dead weight block placing frame; the plurality of supporting feet are vertically fixed at the bottom of the loading plate and arranged around the spherical hinge structure, and the supporting feet are suspended on the ground; the level gauge is arranged on the supporting foot;
the traction system is integrally arranged on the outer side of the spherical hinge structure and comprises four angle-adjusting fixed pulleys, one traction pulley, two electronic digital display tension meters, a steel strand, a tractor and a slideway; two ends of the steel strand are fixed on the upper spherical hinge structure; a first angle positioning fixed pulley and a second angle positioning fixed pulley are respectively fixed on two sides of the upper spherical hinge structure, a slideway is fixed at the outer side position between connecting lines of the first angle positioning fixed pulley and the second angle positioning fixed pulley, the traction pulley is positioned in the slideway, and a third angle positioning fixed pulley and a fourth angle positioning fixed pulley are respectively fixed on two sides of one side of the slideway, which is close to the upper spherical hinge structure; the steel strand sequentially penetrates through the first angle positioning fixed pulley, the third angle positioning fixed pulley, the traction pulley, the fourth angle positioning fixed pulley and the second angle positioning fixed pulley from one end to the other end; one end of the traction pulley, which is far away from the upper spherical hinge structure, is connected with the tractor; and the two electronic digital display tension meters are respectively arranged on the steel stranded wires at two sides of the upper spherical hinge structure.
The utility model relates to a device for measuring frictional resistance of a spherical hinge interface of a horizontal swivel can realize the measurement of the frictional resistance of the spherical hinge interface of different tonnages, spherical hinge sizes and spherical hinge materials, is used for guiding engineering construction and provides theoretical basis and data reference for actual engineering construction; simultaneously the utility model discloses can also be used to survey different spherical hinge interface lubricating material's coefficient of friction for the research and development of the spherical hinge interface lubricating material of turning.
Furthermore, the utility model discloses a traction system has reduced the demand to a plurality of tractors, has effectively saved the cost, has good generalizability.
On the basis of the technical scheme, the utility model discloses still can make following improvement:
preferably, the first angle positioning fixed pulley, the second angle positioning fixed pulley and the steel strand connected between the upper spherical hinge structures are parallel to each other.
The technical characteristics can ensure that the stress on the two sides of the upper spherical hinge structure is always equal and opposite in direction in the rotating process; meanwhile, the steel strands are welded on the upper spherical hinge structure, the steel strands on two sides of the upper spherical hinge structure are parallel, so that the steel strands can only be under the action of a bending moment in the rotating process, no extra force is generated, the transverse stress of the upper spherical hinge structure can be effectively avoided, and the true and accurate test result is ensured.
Preferably, the slideway is fixed on a central line of a connecting line of the first angle-adjusting fixed pulley and the second angle-adjusting fixed pulley.
Preferably, the distance between the third angle-adjusting fixed pulley and the fourth angle-adjusting fixed pulley is equal to the diameter of the traction pulley.
The third angle position-adjusting fixed pulley and the fourth angle position-adjusting fixed pulley are used for ensuring that the stress angle is unchanged and the rotation speed is controllable in the rotation process.
The utility model discloses it is fixed in on the central line of first angle positioning fixed pulley and second angle positioning fixed pulley line and the distance between third angle positioning fixed pulley and the fourth angle positioning fixed pulley equals with the diameter of traction pulley to inject the slide, all is in order to guarantee that the ball pivot structure is rotating the balanced, the speed of in-process atress steady.
Preferably, the supporting feet and the ground are reserved with 5-10 cm of margin, so that the test device is prevented from overturning in the turning process.
Preferably, the radius of the positioning pin shaft is smaller than the radius of a space reserved by the centers of the upper spherical hinge structure and the lower spherical hinge structure, so that errors caused by contact in the rotation process are avoided.
Preferably, lubricating oil is smeared on the positioning pin shaft, the steel strand, the angle-adjusting fixed pulley, the traction pulley and the slide way so as to reduce loss in the traction process.
Preferably, the self-weight blocks are rectangular sand boxes filled with gravels.
The weight of the self-weight blocks can be filled with sand according to different requirements. The load system can simulate bridge weights of different tonnages by increasing or decreasing the number of the self-weight blocks, and balance stress of the upper spherical hinge structure is guaranteed.
Preferably, the electronic digital display tension meter has two working modes of continuous detection and peak detection, and a standard sensor output interface is reserved for connecting a computer for data analysis.
The electronic digital display tension meter is arranged on the steel strand wires on two sides of the upper spherical hinge structure and used for feeding back the tension value of the upper spherical hinge structure in the rotating process in real time.
The utility model discloses still further disclose a test method of ball pivot interface frictional resistance that turns horizontally, including following specific step:
1) according to the horizontal swivel ball hinge used for the installation test of the measuring device, the size, the curvature and the material of the ball hinge can be customized according to requirements;
2) the number of the self-weight blocks is increased or decreased according to the requirement of the tonnage of the bridge, and the spatial position of the upper structure of the measuring device is adjusted through the gradienter and the jack on the supporting foot, so that the whole device is ensured to be in the horizontal center;
3) setting the rotating speed according to the requirement, starting the tractor, recording the data of the two electronic digital display tension meters at the two sides of the upper spherical hinge structure, and calculating the friction coefficient mu of the spherical hinge interface according to the acquired traction force Fw and the total weight Wz of the upper bridge body of the spherical hinge:
4) and the tractor is started again by adjusting the position of the steel strand to recover the testing device, so that the friction resistance of the interface of the whole swivel spherical hinge is measured.
Preferably, the test device in the fourth step is recovered by adjusting the position of the steel strand, the steel strand on the original right side is lapped on the angle-positioning fixed pulley on the left side of the upper spherical hinge structure, and the steel strand on the original left side is lapped on the angle-positioning fixed pulley on the right side of the upper spherical hinge structure to be pulled, so that the reverse rotation of the upper spherical hinge structure is realized.
Compared with the prior art, the utility model has the advantages of it is following and effect:
1. the utility model discloses a processing the ball pivot of different curvatures, size, material, can realize the frictional resistance survey of the level ball pivot of turning of different specifications, different materials. In addition, the friction coefficient of different spherical hinge interface lubricating materials can be measured under the test method, and the method is used for research and development of the swivel spherical hinge interface lubricating materials. The utility model discloses a test device can regard as a test instrument who has the multifunctionality to use, has good generalizability.
2. The utility model discloses an introducing from the traction system who grinds, can guarantee that ball pivot structure both sides atress equals all the time, opposite direction effectively avoids the production of the horizontal atress of ball pivot, simulates the process demand of turning of actual level bridge more really, ensures that the test result is true accurate.
3. The utility model discloses a set up four angle modulation fixed pulleys to install four angle modulation fixed pulleys (fixed pulley), traction pulley (movable pulley) and slide in the ball pivot structure outside, be used for changing the direction of transmission of power, reduce and pull the loss, guaranteed that the ball pivot is at the in-process atress equilibrium stability of turning, rotational speed steady.
4. The utility model discloses a traction system has only set up a tractor, has reduced the demand to a plurality of tractors, has effectively saved the cost.
5. The utility model discloses a load system can realize the survey to horizontal rotating body ball pivot frictional resistance under the different tonnages, has broken through the restriction of single load, has richened test data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a traction system in a device for measuring frictional resistance at an interface of a horizontal swivel ball joint according to the present invention.
Fig. 2 is a schematic structural diagram of the angle-adjusting fixed pulley in the traction system of the present invention.
Fig. 3 is a schematic structural diagram of a traction sheave and a traction machine in the traction system of the present invention.
Fig. 4 is a schematic structural diagram of a lower spherical hinge structure and a spherical hinge positioning bracket in the spherical hinge structure of the present invention.
Fig. 5 is a schematic structural diagram of a load system in the device for measuring frictional resistance at the interface of the horizontal swivel ball joint of the present invention.
Fig. 6 is a schematic resetting diagram of the device for measuring the frictional resistance at the interface of the horizontal swivel ball joint according to the present invention.
Wherein, in the figure,
1-upper spherical hinge structure, 2-lower spherical hinge structure, 3-positioning pin shaft, 4-spherical hinge positioning support, 5-loading plate, 6-supporting foot, 7 self-weight block-, 8-self-weight block placing rack, 9-first angle positioning fixed pulley, 10-second angle positioning fixed pulley, 11-slideway, 12-traction pulley, 13-third angle positioning fixed pulley, 14-fourth angle positioning fixed pulley, 15-steel strand, 16-traction machine, 17-electronic digital display tension meter and 18-ground.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example (b):
the following describes in detail a device for measuring frictional resistance at the interface of a horizontal swivel ball joint according to an embodiment of the present invention with reference to fig. 1 to 6.
On the one hand, as shown in fig. 1-5, the embodiment of the utility model discloses a survey device of spherical hinge interface frictional resistance of horizontal rotation body, include: ball pivot structure, load system, traction system.
In particular, the method comprises the following steps of,
the spherical hinge structure comprises an upper spherical hinge structure 1, a lower spherical hinge structure 2 and a positioning pin shaft 3 arranged at the centers of the upper spherical hinge structure 1 and the lower spherical hinge structure 2; the upper spherical hinge structure 1 and the lower spherical hinge structure 2 can rotate relative to the positioning pin shaft 3.
The positioning pin shaft 3 is arranged at the center of the upper and lower spherical hinge structures 2, so as to prevent the upper and lower spherical hinges from deviating in the rotating process of the upper spherical hinge structure 1 to cause instability of the device; meanwhile, the installation of the positioning pin shaft 3 can also prevent the test device from overturning.
Furthermore, the radius of the positioning pin shaft 3 is smaller than the space radius reserved by the centers of the upper spherical hinge structure and the lower spherical hinge structure, so that errors caused by contact in the rotation process are avoided.
The lower spherical hinge structure 2 is fixed with the ground 18 through a spherical hinge positioning support 4, and the stability of the lower structure in the test process is guaranteed.
The loading system comprises a loading plate 5, a plurality of supporting feet 6, a level gauge, a self-weight block 7 and a self-weight block placing rack 8.
The bottom of the loading plate 5 is fixed with the upper spherical hinge structure 1, and the interior of the upper spherical hinge structure 1 is filled with reactive powder concrete.
Install from pouring weight rack 8 at the top of loadboard 5, in 7 detachable of dead weight piece were fixed in from pouring weight rack 8, the dead weight piece rack 8 mainly is used for fixing from pouring weight 7, prevents to appear the displacement at the process of turning from pouring weight 7.
Furthermore, the self-weight blocks 7 are rectangular sand boxes, and sand can be filled in the sand boxes according to the weight requirement of the single self-weight blocks 7. In this embodiment, the weight block 7 is preferably a rectangular parallelepiped molding box of 100 × 30 cm.
The load system can simulate bridge weights with different tonnages by increasing or decreasing the number of the self-weight blocks 7, and the stress balance of the upper spherical hinge structure 1 is ensured.
A plurality of supporting feet 6 (four in this embodiment) are vertically welded and fixed on the bottom of the loading plate 5 and arranged around the spherical hinge structure, and the supporting feet 6 are suspended on the ground 18.
Further, the supporting feet 6 are welded to the lower part of the loading plate 5 and are left with a margin of 5-10 cm from the ground 18 to prevent the test device from overturning.
Levels (not shown) are mounted on the feet 6 and the position of the bubble in the level of each foot 6 is observed to determine if the device is level in the centre. That is, the level is used to control the spatial position of the ball-joint superstructure and the loading system, ensuring that the entire unit is level and centered.
The traction system is integrally arranged on the outer side of the spherical hinge structure and comprises four angle positioning fixed pulleys, a traction pulley 12, two electronic digital display tension meters 17, a steel strand 15, a tractor 16 and a slideway 11.
Two ends of the steel strand 15 are welded and fixed on the upper spherical hinge structure 1, and the rotation of the upper spherical hinge structure 1 is pulled through the angle-adjusting fixed pulley, the traction pulley 12 and the traction machine 16.
A first angle positioning fixed pulley 9 and a second angle positioning fixed pulley 10 are respectively fixed on two sides of the upper spherical hinge structure 1, a slideway 11 is fixed at the outer side position between the connecting lines of the first angle positioning fixed pulley 9 and the second angle positioning fixed pulley 10, a traction pulley 12 is positioned in the slideway 11, and a third angle positioning fixed pulley 13 and a fourth angle positioning fixed pulley 14 are respectively fixed on two sides of one side of the slideway 11, which is close to the upper spherical hinge structure 1; the steel strand 15 sequentially passes through the first angle positioning fixed pulley 9, the third angle positioning fixed pulley 13, the traction pulley 12, the fourth angle positioning fixed pulley 14 and the second angle positioning fixed pulley 10 from one end to the other end; the end of the traction sheave 12 remote from the upper ball joint arrangement 1 is connected to a traction machine 16.
Furthermore, the steel stranded wires 15 connected between the first angle positioning fixed pulley 9 and the second angle positioning fixed pulley 10 and the upper spherical hinge structure 1 are parallel to each other, so that the two sides of the upper spherical hinge structure 1 are always stressed equally and opposite in direction in the rotating process; meanwhile, the steel strands 15 are welded on the upper spherical hinge structure 1, the steel strands 15 on two sides of the upper spherical hinge structure 1 are parallel, so that the steel strands can only be under the action of bending moment in the rotating process without extra force, the transverse stress of the upper spherical hinge structure 1 can be effectively avoided, and the true and accurate test result is ensured.
In this embodiment, the third angle positioning fixed pulley 13 and the fourth angle positioning fixed pulley 14 are used to ensure that the force angle is unchanged and the rotation speed is controllable during the rotation process.
Furthermore, the slideway 11 is fixed on the central line of the connecting line of the first angle position-adjusting fixed pulley 9 and the second angle position-adjusting fixed pulley 10, and the distance between the third angle position-adjusting fixed pulley 13 and the fourth angle position-adjusting fixed pulley 14 is equal to the diameter of the traction pulley 12, so that the stress balance and the speed stability of the spherical hinge in the rotating process are ensured.
In this embodiment, four angle-adjustable fixed pulleys (fixed pulleys), a traction pulley 12 (movable pulley) and a slideway 11 are installed outside the spherical hinge structure to change the force transmission direction, reduce the traction loss, and ensure the balanced and stable stress and stable rotating speed of the spherical hinge in the rotating process.
Furthermore, in this embodiment, lubricating oil is applied to the positioning pin shaft 3, the steel strand 15, the angle-adjusting fixed pulley, the traction pulley 12 and the slideway 11, so as to reduce loss in the traction process.
Two electronic digital display tension meters 17 are respectively arranged on the steel stranded wires 15 at two sides of the upper spherical hinge structure 1 and used for feeding back the tension value in the spherical hinge rotating process in real time.
Furthermore, the electronic digital display tension meter 17 has two working modes of continuous detection and peak detection, and a standard sensor output interface is reserved for connecting a computer for data analysis.
The embodiment of the utility model provides a still disclose a test method of ball pivot interface frictional resistance that turns horizontally, including following specific step:
1) according to the horizontal swivel ball hinge used for the installation test of the measuring device described in the embodiment, a lower ball hinge structure 2 in a ball hinge structure is fixed with the ground 18 through a ball hinge positioning support 4, an upper ball hinge structure 1 is welded with a loading plate 5, and active powder concrete is filled inside the upper ball hinge structure; a positioning pin shaft 3 is arranged at the center of the upper spherical hinge and the lower spherical hinge; the steel strand 15 winds the angle-adjusting fixed pulley and the traction pulley 12 according to the designed line; the size, curvature and material of the horizontal swivel ball hinge used for testing can be customized according to requirements;
2) the number of the self-weight blocks 7 is increased or decreased according to the requirement of the tonnage of the bridge, whether the device is in the horizontal center or not is judged by observing the positions of bubbles in the gradienter on each supporting foot 6, and the spatial position of the upper structure of the device is adjusted and determined by the jack, so that the whole device is ensured to be in the horizontal center;
3) setting the rotating speed according to the requirement, starting a traction machine 16, recording data of two electronic digital display tension meters 17 at two sides of the upper spherical hinge structure 1, inputting the data into a computer in real time through an interface, and calculating and displaying the friction coefficient of the spherical hinge interface in real time through a corresponding data processing program;
according to the acquired traction force Fw and the total weight Wz of the upper bridge body of the spherical hinge, the friction coefficient mu of the spherical hinge interface can be calculated:
4) the traction machine 16 is started again by adjusting the position of the steel strand 15, and the test device is recovered, so that the friction resistance of the interface of the whole swivel spherical hinge is measured;
specifically, as shown in fig. 6, the test apparatus is restored by adjusting the position of the steel strand 15, and the steel strand 15 on the right side is put on the angle-adjusting fixed pulley on the left side of the upper spherical hinge structure 1, that is, the steel strand No. ii in the diagrams a and b in fig. 6 is originally put on the second angle-adjusting fixed pulley 10, and when being restored, the steel strand No. ii is put on the first angle-adjusting fixed pulley 9 as shown in the diagrams c and d; originally, the steel strand 15 on the left side is lapped on the angle-adjusting fixed pulley on the right side of the upper spherical hinge structure 1, namely the steel strand I in the drawings of a and b in fig. 6 is lapped on the first angle-adjusting fixed pulley 9 originally, and when the steel strand I is recovered, the steel strand I is lapped on the second angle-adjusting fixed pulley 10 as shown in the drawings of c and d; and then traction is carried out, so that the reverse rotation of the upper spherical hinge structure 1 is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use 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. The utility model provides a survey device of spherical hinge interface frictional resistance of horizontal rotation which characterized in that includes:
the spherical hinge structure comprises an upper spherical hinge structure (1), a lower spherical hinge structure (2) and a positioning pin shaft (3) arranged at the centers of the upper spherical hinge structure (1) and the lower spherical hinge structure (2); the upper spherical hinge structure (1) and the lower spherical hinge structure (2) can rotate relative to the positioning pin shaft (3); the lower spherical hinge structure (2) is fixed with the ground (18) through a spherical hinge positioning support (4);
the loading system comprises a loading plate (5), a plurality of supporting feet (6), a level, a self-weight block (7) and a self-weight block placing rack (8); the bottom of the loading plate (5) is fixed with the upper spherical hinge structure (1), and the interior of the upper spherical hinge structure (1) is filled with active powder concrete; the top of the loading plate (5) is provided with the dead weight block placing frame (8), and the dead weight block (7) is detachably fixed in the dead weight block placing frame (8); the supporting feet (6) are vertically fixed at the bottom of the loading plate (5) and arranged around the spherical hinge structure, and the supporting feet (6) are suspended on the ground (18); the level gauge is arranged on the supporting foot (6);
the traction system is integrally arranged on the outer side of the spherical hinge structure and comprises four angle positioning fixed pulleys, a traction pulley (12), two electronic digital display tension meters (17), a steel strand (15), a traction machine (16) and a slide way (11); two ends of the steel strand (15) are fixed on the upper spherical hinge structure (1); a first angle positioning fixed pulley (9) and a second angle positioning fixed pulley (10) are respectively fixed on two sides of the upper spherical hinge structure (1), the slide way (11) is fixed at the outer side position between connecting lines of the first angle positioning fixed pulley (9) and the second angle positioning fixed pulley (10), the traction pulley (12) is positioned in the slide way (11), and a third angle positioning fixed pulley (13) and a fourth angle positioning fixed pulley (14) are respectively fixed on two sides of the slide way (11) close to one side of the upper spherical hinge structure (1); the steel strand (15) sequentially penetrates through the first angle positioning fixed pulley (9), the third angle positioning fixed pulley (13), the traction pulley (12), the fourth angle positioning fixed pulley (14) and the second angle positioning fixed pulley (10) from one end to the other end; one end of the traction pulley (12) far away from the upper spherical hinge structure (1) is connected with the traction machine (16); the two electronic digital display tension meters (17) are respectively arranged on the steel stranded wires (15) on two sides of the upper spherical hinge structure (1).
2. The device for measuring the interfacial frictional resistance of the horizontal swivel ball joint according to claim 1, wherein the steel strands (15) connected between the first angle-adjusting fixed pulley (9), the second angle-adjusting fixed pulley (10) and the upper ball joint structure (1) are parallel to each other.
3. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to claim 1, wherein the slideway (11) is fixed on the central line of the connecting line of the first angle-adjusting fixed pulley (9) and the second angle-adjusting fixed pulley (10).
4. A device for measuring the frictional resistance at the interface of a horizontal swivel ball joint according to claim 3, wherein the distance between the third angular position-adjusting fixed pulley (13) and the fourth angular position-adjusting fixed pulley (14) is equal to the diameter of the traction pulley (12).
5. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to claim 1, wherein the supporting legs (6) are left with a margin of 5-10 cm from the ground (18).
6. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to claim 1, wherein the radius of the positioning pin shaft (3) is smaller than the radius of the space reserved by the centers of the upper and lower ball joint structures.
7. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to claim 1, wherein lubricating oil is coated on the positioning pin shaft (3), the steel strand (15), the angle-adjusting fixed pulley, the traction pulley (12) and the slide way (11).
8. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to claim 1, wherein the self-weight block (7) is a rectangular sand box filled with sand.
9. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint as claimed in claim 1, wherein the simulation of bridges with different tonnages can be realized by increasing or decreasing the number of the self-weight blocks (7).
10. The device for measuring the frictional resistance of the interface of the horizontal swivel ball joint according to any one of claims 1 to 9, wherein the electronic digital display tension meter (17) has two working modes of continuous detection and peak detection, and a standard sensor output interface is reserved for connecting a computer for data analysis.
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| CN202020616178.XU CN212008263U (en) | 2020-04-22 | 2020-04-22 | Device for measuring frictional resistance of horizontal rotating spherical hinge interface |
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| CN202020616178.XU CN212008263U (en) | 2020-04-22 | 2020-04-22 | Device for measuring frictional resistance of horizontal rotating spherical hinge interface |
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| CN (1) | CN212008263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413273A (en) * | 2020-04-22 | 2020-07-14 | 吉林大学 | Device and method for measuring frictional resistance of horizontal swivel spherical hinge interface |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413273A (en) * | 2020-04-22 | 2020-07-14 | 吉林大学 | Device and method for measuring frictional resistance of horizontal swivel spherical hinge interface |
| CN111413273B (en) * | 2020-04-22 | 2024-05-14 | 吉林大学 | Device and method for measuring frictional resistance of horizontal swivel spherical hinge interface |
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