CN212834982U - Swing type saddle assembly - Google Patents

Abstract

The utility model discloses an oscillating saddle assembly, which comprises a saddle body, wherein the saddle body at least comprises an oscillating support, a saddle body support and a cable saddle arranged at the top of the saddle body support, the oscillating support is fixedly arranged on a test bed, a raised arc-shaped plate surface structure is arranged at the top end of the oscillating support, and a raised limit key with a trapezoidal structure is arranged on the arc-shaped plate surface structure; the saddle bottom plate of the saddle support is provided with a notch part matched with the limit key, and the saddle support is connected with the limit key of the swing support in a clamping way through the saddle bottom plate to form the structure. The saddle body can complete the compensation of the elastic deformation of the cable in the friction coefficient measurement test process through the structural design of the saddle body, thereby ensuring the accurate measurement of the friction coefficient.

Description

Swing type saddle assembly

Technical Field

The utility model belongs to the suspension bridge field especially relates to an oscillating saddle assembly.

Background

The calculation of the slip resistance of the cable saddle in the road suspension bridge design specification (JTG/T D65-05-2015) does not take into account the influence of the diaphragm, nor does the large variation in the dimensions of the individual channels give a relevant explanation of the influence on the slip resistance. In order to verify the reliability of the core component and ensure the structure safety, an anti-sliding test is required to be carried out, and the anti-sliding coefficient of the steel wire in the saddle groove of the thick partition plate of the wide groove path is tested; verifying whether the structural strength of the cable saddle is safe; the influence degree of the thickness of the partition board and the width of the channel on the anti-slip coefficient is qualitatively and quantitatively researched.

The test saddle structure for the anti-sliding test should restore the stress form of the solid bridge as much as possible to obtain the test result which is closest to the actual test result. In the solid bridge, the main cable and the saddle groove keep relatively static under the action of friction force, and the elastic expansion of the length of the main cable steel wire caused by uneven load on two sides of the main tower is compensated through the flexible deflection of the main tower. Therefore, the elastic deformation compensation of the main cable steel wire before sliding needs to be structurally considered in the test saddle, and the influence of the steel wire expansion before sliding on the test result is avoided.

In the conventional anti-slip test, a test saddle is directly fixed to a test bed, and the anti-slip test is performed by pulling one end of a main cable as shown in fig. 1. The expansion amount of the main cable steel wire before relative slippage is generated cannot be compensated, slippage can be caused in advance theoretically, and the measured friction coefficient is smaller.

Therefore, there is a need for a new saddle structure that enables accurate measurement of the coefficient of friction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art defect, the utility model discloses an oscillating saddle assembly makes the saddle body can accomplish the compensation to cable elastic deformation in coefficient of friction measurement test process through the structural design of this saddle body to guarantee coefficient of friction's accurate measurement.

The purpose of the utility model is realized through the following technical scheme:

a swing type saddle assembly comprises a saddle body, wherein the saddle body at least comprises a swing support, a saddle body support and a cable saddle arranged at the top of the saddle body support, the swing support is fixedly arranged on a test bed, a raised arc-shaped plate surface structure is arranged at the top end of the swing support, and a raised limit key with a trapezoidal structure is arranged on the arc-shaped plate surface structure; the saddle bottom plate of the saddle support is provided with a notch part matched with the limit key, and the saddle support is connected with the limit key of the swing support in a clamping way through the saddle bottom plate to form a swing saddle structure. A saddle bottom plate of the saddle support is of a flat plate structure or an arc-shaped plate structure.

According to a preferred embodiment, the swing support at least further comprises an arc bearing plate and a connecting bottom plate, the arc bearing plate is fixedly arranged on the connecting bottom plate, and the top surface of the arc bearing plate is of a convex arc-shaped plate surface structure.

According to a preferred embodiment, the limiting key is of a wedge-shaped structure, and the top end of the limiting key protrudes out of the plate surface of the arc-shaped bearing plate.

According to a preferred embodiment, a square sunk groove structure is arranged on the connecting bottom plate, and the limiting key is arranged in the sunk groove structure and connected with the connecting floor through a connecting assembly.

According to a preferred embodiment, bolt through holes which are symmetrically distributed are formed in two sides of the connecting bottom plate along the length direction and used for installing and fixing the swing support on a test bed.

According to a preferred embodiment, the saddle body support further comprises a transverse rib plate, longitudinal rib plates and a saddle body connecting plate, wherein a plurality of longitudinal rib plates are arranged on two sides of the transverse rib plate in parallel, and each longitudinal rib plate is rigidly connected with the transverse rib plate.

According to a preferred embodiment, the transverse rib plate and the longitudinal rib plate are positioned at the top of the saddle body bottom plate and are respectively vertical to the saddle body bottom plate; the saddle body connecting plate is positioned at the tops of the transverse rib plate and the longitudinal rib plate and is arranged in parallel with the saddle body bottom plate.

According to a preferred embodiment, the cable saddle is arranged on top of the saddle connection plate.

The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.

The utility model has the advantages that: through this the utility model discloses a saddle body bottom cambered surface swing support forms flexible swing mechanism with the cooperation of saddle body support for before main push-towing rope steel wire sliding, the compensation that is used for the flexible volume of cable elasticity is accomplished in the swing of the accessible saddle body. The problem that the slippage occurs in advance only due to the elastic deformation of the cable is avoided. Thereby ensuring the reliability of the anti-skid test data.

Drawings

FIG. 1 is a schematic structural view of a fixed main cable saddle test stand used in the prior art;

FIG. 2 is a schematic view of the connection between the swing support and the saddle body support of the swing saddle of the present invention;

fig. 3 is a schematic perspective view of the swing saddle of the present invention;

fig. 4 is an exploded schematic view of the oscillating support in the oscillating saddle of the present invention;

figure 5 is a schematic view of an embodiment of the oscillating saddle of the present invention;

figure 6 is a schematic view of another embodiment of the oscillating saddle of the present invention;

figure 7 is a schematic structural view of a second embodiment of the oscillating saddle assembly of the present invention;

figure 8 is a schematic perspective view of a second embodiment of the oscillating saddle assembly of the present invention;

figure 9 is a schematic view of the forces exerted by the oscillating saddle of the invention in a second embodiment;

the device comprises a test bed 100, a cable 101, a pressure sensor 102, a cable clamp 103, a saddle 200, a swinging support 201, a circular arc bearing plate 201a, a limiting key 201b, a connecting bottom plate 201c, a connecting assembly 201d, a saddle support 202, a saddle bottom plate 202a, a transverse rib plate 202b, a longitudinal rib plate 202c, a saddle connecting plate 202d, a tensioning part 300, a reaction frame 301, a pushing mechanism 302, a supporting leg 303, a first connecting assembly 304, a second connecting assembly 305, a pulling rod 306 and a connecting head 307.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship that the utility model is usually placed when using, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.

Example 1:

referring to fig. 2 to 4, the present embodiment discloses an oscillating saddle assembly. The swing type saddle assembly comprises a saddle body 200. The saddle 200 includes at least a swing seat 201, a saddle seat 202, and a cable saddle disposed on top of the saddle seat 202. The swing support 201 is used for connecting and fixing the saddle 200 with the support unit, that is, with the test bench. The saddle support 202 is used for supporting the cable saddle. The saddle is used to accommodate the cable 101.

Preferably, the swing support 201 is fixedly arranged on the test bed. The top of swing support 201 is equipped with bellied circular arc type face structure, just the structural spacing key 201b that is equipped with bellied trapezoidal structure of circular arc type face.

Preferably, the saddle bottom plate 202a of the saddle support 202 is provided with a notch portion matching with the limit key 201 b. The saddle support 202 is connected with a limit key 201b of the swing support 201 through a saddle bottom plate 202a in a clamping way, so that the swing saddle 200 structure is formed. That is, the stopper 201b stops the saddle 202, and prevents the saddle 202 and the swing support 201 from being displaced or slid relative to each other.

Preferably, the swing support 201 further comprises at least a circular arc carrier plate 201a and a connecting bottom plate 201 c. Arc carrier plate 201a fixed set up in connect on the bottom plate 201c, just arc carrier plate 201 a's top surface is circular arc type face structure.

That is, the saddle 202 mounted on the top of the arc support plate 201a may swing at the top end of the swing support 201 due to the arc structure of the top surface of the arc support plate 201 a.

Preferably, the limit key 201b is a wedge-shaped structure. The top end of the limit key 201b protrudes out of the plate surface of the arc-shaped bearing plate 201 a.

That is, the stopper key 201b does not completely block the saddle body support 202 due to the structure that the bottom of the stopper key 201b is wide and gradually narrows toward the top. Moreover, on the basis that the arc-shaped structure is arranged on the top of the arc-shaped bearing plate 201a, the saddle body support 202 can realize the function of swinging relative to the swinging support.

Preferably, a square sunk groove structure is arranged on the connecting bottom plate 201c, and the limit key 201b is arranged in the sunk groove structure and connected with the connecting floor through a connecting assembly 201 d. Preferably, the connecting component 201d is a countersunk head screw.

Through the arrangement of the sinking groove structure on the connecting bottom plate 201c, the connection stability between the limiting part 201b and the connecting bottom plate 201c is further ensured.

Preferably, bolt through holes symmetrically distributed are formed in both sides of the connecting bottom plate 201c along the length direction, and are used for installing and fixing the swing support 201 on a test bed.

Preferably, the saddle bottom plate 202a of the saddle support 202 has a flat plate structure or an arc plate structure.

Preferably, when the saddle bottom plate 202a is an arc plate structure. And the arc opening direction of the saddle bottom plate 202a is the same as the opening direction of the corresponding arc of the arc bearing plate 201a, and the corresponding radius value of the arc of the saddle bottom plate 202a is larger than the corresponding radius value of the arc-shaped plate surface structure at the top of the swing support 201. When the arc opening direction of the saddle bottom plate 202a is opposite to the opening direction of the corresponding arc of the arc bearing plate 201a, the corresponding radius value of the arc of the saddle bottom plate 202a and the corresponding radius value of the arc-shaped plate surface structure at the top of the swing support 201 can be set at will.

Preferably, the saddle support 202 further comprises a cross rib plate 202b, a longitudinal rib plate 202c and a saddle connecting plate 202 d. A plurality of longitudinal rib plates 202c are arranged in parallel on two sides of the transverse rib plate 202b, and each longitudinal rib plate 202c is rigidly connected with the transverse rib plate 202 b.

Preferably, the transverse rib plate 202b and the longitudinal rib plate 202c are positioned on top of the saddle bottom plate 202a and are perpendicular to the saddle bottom plate 202a respectively. And the transverse rib plate 202b and the longitudinal rib plate 202c are rigidly connected with the saddle body bottom plate 202a respectively.

Preferably, the saddle connecting plate 202d is located on top of the transverse rib plate 202b and the longitudinal rib plate 202c, and is arranged parallel to the saddle bottom plate 202 a. The saddle connecting plate 202d is rigidly connected to the transverse rib plate 202b and the longitudinal rib plate 202 c.

Preferably, the cable saddle is disposed on top of the saddle attachment plate 202 d.

In the saddle 200 of the present embodiment, the lower plane of the saddle 202 is in line-surface contact with the arc surface of the swing bearing 201. The purpose of compensating the main cable or cable expansion caused by uneven loads on two sides through the swing structure is achieved. The problem that relative slippage occurs in advance simply due to elastic deformation of the cable is avoided. Thereby ensuring the reliability of the friction coefficient measurement in the anti-skid test process.

Example 2:

referring to fig. 5, this example discloses an application of the swing type test saddle shown in example 1 on the basis of example 1.

As shown, the saddle 200 is disposed on the test stand 100. This test stand 100 adopts the present test stand disclosed in the background of the invention.

The swing support 201 at the bottom end of the saddle body 200 is fixedly arranged on the test bed 100. The saddle support 202 is mounted on the swing support 201.

The cable 101 is inserted through the saddle 200 and is mounted inside the saddle at the top of the saddle 200. And both ends of the cable 101 are respectively connected with both ends of the test bed 100.

The joints between the two ends of the cable 101 and the test bed 100 are provided with pressure sensors 102 for measuring the tension conditions borne by the two ends of the cable 101 respectively.

And, the joints of the two ends of the cable 101 and the test bed 100 are further provided with tensioning mechanisms for respectively tensioning the two ends of the cable 101. For example, the tensioning mechanism may be a jack mechanism, that is, both ends of the cable 101 may be tensioned by a jack.

During the simulation of the friction coefficient between the cable 101 and the saddle 200. Firstly, by simulating the force application condition of an actual bridge to the cable 101, a tension mechanism of the test bed 100 applies a preset tension on two ends of the cable 101.

Then, a continuously increasing pulling force is applied to one end of the cable 101 to realize the relative displacement between the saddle of the saddle 200 and the cable 101 mounted thereon, and the pulling force at the two ends of the cable 101 is respectively measured when the cable 101 and the saddle 200 relatively move by the pressure sensor 102 on the test bench 100. Therefore, the friction coefficient between the cable 101 and the saddle 200 under a specific simulation scene is measured through the two measured tension magnitudes and the included angle between the two tension magnitudes.

Example 3

As shown with reference to fig. 6-9. On the basis of embodiment 1, the oscillating saddle assembly disclosed in this embodiment further comprises a tensioning portion 300. The saddle 200 and the tension part 300 are respectively disposed on the test table top of the test table 100.

By simulating the force application condition of an actual bridge to the cable 101, a preset pulling force is applied to the two ends of the cable 101 by the test bed 100. The saddle body 200 is driven by the tensioning part 300 to realize the relative displacement of the saddle body 200 and the cable 101 carried by the saddle body, and the tension force at the two ends of the cable 101 is respectively measured by the pressure sensors 102 at the two ends of the test bed 100 when the cable 101 and the saddle body 200 relatively move. Therefore, the friction coefficient between the cable 101 and the saddle 200 under a specific simulation scene is measured through the two measured tension magnitudes and the included angle between the two tension magnitudes.

Preferably, the saddle 200 is provided with a swing support 201 at the bottom end thereof, and the swing support 201 is connected to the test table top of the test table 100. The top of swing support 201 is protruding form cambered surface structure, the corresponding radius of cambered surface structure correspondence pitch arc is R. And a raised limit trapezoidal structure is further arranged in the middle of the top of the swing support 201.

Preferably, the saddle seat 202 of the saddle 200 is movably connected to the swing seat 201 and can rotate within a preset angle.

Further, the bottom surface of the saddle support 202 is a planar structure, and the bottom surface of the saddle support 202 is provided with a receiving groove for receiving the limit trapezoidal structure of the swing support 201. So that said saddle support 202 can be rotated with respect to said pendulum support 201 when said saddle support 202 is assembled on said pendulum support 201.

Preferably, the tensioning portion 300 includes at least a reaction frame 301, a pushing mechanism 302, a first connecting assembly 304, a pull rod 306, and a connecting head 307. A spherical washer and a spherical nut are arranged in the connecting head 307, and the level of the pull rod 306 can be kept in the stretching process

Preferably, the reaction frame 301 is fixed on the test table top of the test table 100. Further, the reaction frame 301 has a right trapezoid frame structure, and the contact surface with the test bed 100 is the longer bottom side of the trapezoid structure.

Preferably, the reaction frame 301 is connected to the test bed 100 by welding or bolting.

Preferably, the ejector mechanism 302 is coupled to the top end of the saddle 200 via a pull rod 306.

Further, the top of the saddle seat 202 of the saddle 200 is connected to the cable saddle via bolts. The top end of the cable saddle is provided with a convex anchor beam structure, and the anchor beam completes the clamping connection of the connector 307 at the end part of the pull rod 306. And the setting direction of the pull rod 306 is horizontal setting. The pull rod 306 is oriented to facilitate the pushing mechanism 302 to provide a relatively small force to pull the saddle 200.

Preferably, the pushing mechanism 302 is connected to the top end of the reaction frame 301 via its supporting leg 303. Wherein, the supporting foot 303 is a jacking arm of the jacking mechanism 302.

That is, the jacking mechanism 302 applies a counter force of jacking to the reaction frame 304 through the force transmission of the supporting leg 303, and the pull rod 306 is synchronously pulled by the jacking mechanism 302 through the first connecting component 304 to complete the pulling of the pull rod 306.

Further, the thrusting mechanism 302 may be constituted by a jack device.

Preferably, the pushing mechanism 302 is connected to the pull rod 306 through a first connecting assembly 304, and the end of the pull rod 306 is provided with a connector 307 and is connected to the top end of the saddle 200 through the connector 307.

Preferably, a second connecting assembly 305 is further disposed between the first connecting assembly 304 and the pull rod 306, and a sensor and a lock nut for measuring the magnitude of the pulling force are disposed on the second connecting assembly 305. The structure of the sensor is arranged, so that a tester can master the tension change condition provided by the tension part 300 in real time.

Preferably, a cable 101 for testing is inserted through and mounted on the saddle 200, both ends of the cable 101 are connected to both ends of the test bed 100, respectively, and load cells 102 are provided at both connections of the cable 101 and the test bed 100.

When a friction coefficient measurement test is performed, the test bench 100 completes the application of a preset tension to the cable 101 based on the actual tension applied to the cable by the object bridge to be simulated. The tension part 300 pulls the saddle 200, so that the saddle 200 and the cable 101 carried thereon slide relativelyAnd (6) moving. And the measurement of the tension between the two ends of the cable and the test bed 100 is completed through the load cell 102 at the moment of sliding. Based on the measured tension F of the tensioned end of the cable 101_ctTension F of the opposite loose end of cable 101_clAnd the included angle of the two tension forces to complete the calculation of the friction coefficient.

In summary, the present embodiment discloses a structural design of a saddle assembly, and a pulling force F provided by the pushing mechanism 302 in the saddle assembly acts on the top of the main cable saddle through the pull rod 306, and is consistent with the equivalent action point of the cable force Fc of the cable 101 and the friction force F between the cable 101 and the saddle of the saddle body 200. The action direction of the pulling force F is horizontal, so that the model selection tonnage of the pushing mechanism is small, and the installation and the operation are convenient. The relative sliding of the cable and the saddle body can be realized only by the pulling device with extremely large tonnage when the traditional technology is adopted. The cost of large tonnage pulling devices increases in geometric multiples as tonnage increases. Namely, the position of the pushing mechanism is arranged, so that the test cost is greatly saved.

Meanwhile, the cambered surface swing support 201 at the bottom of the saddle body 200 is matched with the saddle body support 202 to form a flexible swing mechanism, so that the compensation for the elastic expansion amount of the cable can be completed through the swing of the saddle body 200 before the main cable steel wire slides. The problem of premature slippage caused solely by elastic deformation of the cable 101 is avoided. Thereby ensuring the reliability of the friction coefficient measurement in the anti-skid test process.

The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will. Numerous combinations will be known to those skilled in the art.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A swing saddle assembly, comprising a saddle body (200), characterized in that said saddle body (200) comprises at least a swing support (201), a saddle support (202) and a cable saddle arranged on top of the saddle support (202),

the swing support (201) is fixedly arranged on the test bed (100), a raised arc-shaped plate surface structure is arranged at the top end of the swing support (201), and a raised limit key (201b) with a trapezoidal structure is arranged on the arc-shaped plate surface structure;

a saddle bottom plate (202a) of the saddle support (202) is provided with a notch part matched with the limit key (201b), and the saddle support (202) is clamped and connected with the limit key (201b) of the swinging support (201) through the saddle bottom plate (202a) to form a swinging saddle structure;

a saddle bottom plate (202a) of the saddle support (202) is of a flat plate structure or an arc plate surface structure.

2. Saddle assembly of the oscillating type according to claim 1, characterised in that said oscillating support (201) comprises at least a circular arc carrier plate (201a) and a connecting base plate (201c),

the arc bearing plate (201a) is fixedly arranged on the connecting bottom plate (201c), and the top surface of the arc bearing plate (201a) is of an outward convex arc-shaped plate surface structure.

3. Saddle assembly of the oscillating type according to claim 2, in which said limit key (201b) is of wedge-shaped configuration,

the top end of the limiting key (201b) protrudes out of the plate surface of the arc bearing plate (201 a).

4. Saddle assembly of the oscillating type according to claim 3, characterised in that said connection base plate (201c) is provided with a square sunk structure, said limit key (201b) being arranged in said sunk structure and connected to said connection base plate (201c) through a connection member (201 d).

5. Saddle assembly, according to claim 4, in which said connection base (201c) is provided, on both sides along its length, with through holes for the bolts symmetrically distributed, for mounting and fixing said oscillating support (201) on the test bench (100).

6. An oscillating saddle assembly according to claim 1, wherein said saddle support (202) further comprises a cross rib (202b), a longitudinal rib (202c) and a saddle attachment plate (202d),

a plurality of longitudinal rib plates (202c) are arranged on two sides of the transverse rib plate (202b) in parallel, and each longitudinal rib plate (202c) is rigidly connected with the transverse rib plate (202 b).

7. An oscillating saddle assembly according to claim 6, wherein said transverse rib (202b) and longitudinal rib (202c) are located on top of said saddle base plate (202a) and are perpendicular to said saddle base plate (202a), respectively;

the saddle body connecting plate (202d) is positioned at the tops of the transverse rib plate (202b) and the longitudinal rib plate (202c) and is arranged in parallel with the saddle body bottom plate (202 a).

8. Saddle assembly, of the type described in claim 7, in which said cable saddle is arranged on top of said saddle connection plate (202 d).

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