A large angle ball hinge support for column biaxial test

Abstract

The application discloses a large-angle spherical hinge support for a column double eccentric compression test, which comprises a bottom plate, a spherical hinge assembly is arranged on the bottom plate, the upper end of the spherical hinge assembly is connected with a spherical hinge plate, an upper sliding rail group is arranged at the spherical hinge plate, a lower sliding rail group is arranged at the bottom plate, a connecting rod assembly is arranged between the upper sliding rail group and the lower sliding rail group, and the connecting rod assembly ensures large-angle rotation of the spherical hinge assembly. The large-angle rotation is realized by adjusting the matching relationship between the hemispherical body in the spherical hinge plate and the groove body in the bottom basin, and the upper sliding rail group and the lower sliding rail group provide a sliding and rotating adjustment support base for the connecting rod assembly. The large-angle bidirectional rotation can be realized by the sliding steel bars and the connecting rod assembly, the spherical hinge plate and the bottom basin are in surface-to-surface contact, the contact stress area is larger than that of the traditional line contact, the peak stress on the contact surface is reduced, meanwhile, the connecting rod assembly on the outer side can limit the maximum displacement of the bidirectional hinge of the support, and the test piece is prevented from being separated from the support.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building structure test, and particularly relates to a large-angle spherical hinge support for column double eccentricity test. BACKGROUND

[0002] In building structure test, the support is a main component, which supports the stability of the test piece, transmits load and restricts the end displacement of the test piece, including linear displacement and angular displacement. At present, the widely used support is a two-way knife hinge support, which comprises a lower bottom plate, a middle bottom plate and an upper bottom plate stacked together.

[0003] In building structure test, the guide form of the current two-way knife hinge support is mainly that the x-direction knife-shaped groove on the upper surface of the lower bottom plate wraps the x-direction knife-shaped protrusion on the lower surface of the middle bottom plate, and the y-direction knife-shaped protrusion on the upper surface of the middle bottom plate is embedded into the y-direction knife-shaped groove on the upper bottom plate.

[0004] The guide mode of the two-way knife hinge support adopts x and y direction stacking, which can realize two-way rotation, but is composed of three bottom plates, and the three bottom plates are likely to separate when the test piece rotates at a large angle; if one of the three bottom plates is damaged, the test result of the test piece loading will be affected; therefore, the rotation capacity of the two-way knife hinge support is limited. SUMMARY

[0005] The present application is proposed to solve the problems existing in the prior art, and aims to provide a large-angle spherical hinge support for column double eccentricity test.

[0006] The technical scheme of the present application is: a large-angle spherical hinge support for column double eccentricity test, comprising a bottom plate, a spherical hinge assembly is arranged on the bottom plate, an upper end of the spherical hinge assembly is connected with a spherical hinge plate, an upper sliding rail group is arranged at the spherical hinge plate, a lower sliding rail group is arranged at the bottom plate, a connecting rod assembly is arranged between the upper sliding rail group and the lower sliding rail group, and the connecting rod assembly ensures large-angle rotation of the spherical hinge assembly.

[0007] Further, the spherical hinge assembly comprises a bottom basin, the bottom basin is arranged at an upper end of the bottom plate, a hemispherical body is formed at a lower end of the spherical hinge plate, a groove body is formed at an upper end of the bottom basin, and the hemispherical body and the groove body are combined to form a rotating pair.

[0008] Further, the spherical hinge assembly is located at the center of the bottom plate and the spherical hinge plate.

[0009] Further, the upper sliding rail group is arranged on the outer side wall of the spherical hinge plate, the lower sliding rail group is arranged on the inner side wall of the bottom plate, and the upper sliding rail group and the lower sliding rail group are vertically aligned.

[0010] Further, the upper sliding rail group is movably connected with an upper connecting rod, and the lower sliding rail group is movably connected with a lower connecting rod.

[0011] Further, the free end of the upper connecting rod is connected with one end of the universal joint group, and the free end of the lower connecting rod is connected with the other end of the universal joint group, and the upper connecting rod, the universal joint group and the lower connecting rod are connected to form a connecting rod assembly.

[0012] Further, an assembly through hole is formed in the spherical hinge plate for assembly.

[0013] Further, the bottom plate and the spherical hinge plate are both square in cross section, and the connecting rod assembly is arranged at each of the four outer walls of the spherical hinge plate.

[0014] Further, the groove in the bottom basin matched with the hemispherical body is an arc-shaped groove, and the arc-shaped groove is in contact with the hemispherical body.

[0015] Further, the connecting rod assemblies in the left and right side walls of the spherical hinge plate correspond to each other, and the connecting rod assemblies in the front and rear side walls of the spherical hinge plate correspond to each other.

[0016] The beneficial effects of the present application are as follows:

[0017] The present application adjusts the matching relationship between the hemispherical body in the spherical hinge plate and the groove in the bottom basin, realizes large-angle rotation, and provides a sliding and rotating adjustment support basis for the connecting rod assembly through the upper sliding rail group and the lower sliding rail group.

[0018] The present application realizes large-angle bidirectional rotation through the sliding steel bars and the connecting rod assembly, and the spherical hinge plate and the bottom basin are in surface-to-surface contact, so that the contact area is larger than that of the traditional line contact, the peak stress on the contact surface is reduced, and the maximum displacement of the bidirectional hinge of the support can be limited by the connecting rod assembly on the outside, thereby preventing the test piece from being separated from the support. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the present application;

[0020] Figure 2 It is a front view of the present application;

[0021] Figure 3 It is a top view of the present application;

[0022] Figure 4 It is a schematic diagram of the present application as a whole;

[0023] Figure 5 It is a structure diagram of the universal joint group in the present application;

[0024] Figure 6 It is a structure diagram of the upper connecting rod and the lower connecting rod in the present application;

[0025] Figure 7 It is a structure diagram of the upper sliding rail group in the present application;

[0026] Figure 8 This is a structural diagram of the lower sliding track assembly in this invention;

[0027] in:

[0028] 1. Base basin 2. Base plate

[0029] 3. Ball joint plate; 4. Upper connecting steel plate

[0030] 5 Connecting bolts 6 Upper connecting rod

[0031] 7. Lower connecting rod; 8. Upper sliding reinforcing bar

[0032] 9. Lower sliding reinforcing bar; 10. Upper supporting steel plate

[0033] 11 Lower support steel plate 12 Universal joint assembly

[0034] 13 Upper sliding track group 14 Lower sliding track group

[0035] 121 Middle base body 122 No. I cross joint

[0036] 123Ⅱ cross joint, 124Ⅰ movable seat

[0037] 125Ⅱ movable seat. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0039] like Figures 1 to 8 As shown, a large-angle ball joint support for a column double-biased test includes a base plate 2, on which a ball joint assembly is provided. The upper end of the ball joint assembly is connected to a ball joint plate 3. An upper sliding track group 13 is provided at the ball joint plate 3, and a lower sliding track group 14 is provided at the base plate 2. A connecting rod assembly is provided between the upper sliding track group 13 and the lower sliding track group 14. The connecting rod assembly ensures the large-angle rotation of the ball joint assembly.

[0040] The ball joint assembly includes a base plate 1, which is disposed on the upper end of the base plate 2. The lower end of the ball joint plate 3 forms a hemisphere, and the upper end of the base plate 1 forms a groove. The hemisphere and the groove are combined to form a rotating pair.

[0041] The ball joint assembly is located at the center of the base plate 2 and the ball joint plate 3.

[0042] The upper sliding track assembly 13 is disposed on the outer side wall of the ball joint plate 3, and the lower sliding track assembly 14 is disposed on the inner side wall of the base plate 2. The upper sliding track assembly 13 and the lower sliding track assembly 14 are aligned vertically.

[0043] The upper sliding rail group 13 is movably connected with the upper connecting rod 6, and the lower sliding rail group 14 is movably connected with the lower connecting rod 7.

[0044] The free end of the upper connecting rod 6 is connected with one end of the universal joint group 12, and the free end of the lower connecting rod 7 is connected with the other end of the universal joint group 12, and the upper connecting rod 6, the universal joint group 12 and the lower connecting rod 7 are connected to form a connecting rod assembly.

[0045] An assembly through hole is formed in the spherical hinge plate 3 for assembly.

[0046] The bottom plate 2 and the spherical hinge plate 3 are both square in cross section, and the connecting rod assembly is arranged at each of the four outer walls of the spherical hinge plate 3.

[0047] The groove in the bottom plate 1 that cooperates with the hemispherical body is an arc-shaped groove that is in contact with the hemispherical body.

[0048] The connecting rod assemblies in the left and right side walls of the spherical hinge plate 3 correspond to each other, and the connecting rod assemblies in the front and rear side walls of the spherical hinge plate 3 correspond to each other.

[0049] Specifically, the upper end of the spherical hinge plate 3 is mounted with the upper connecting steel plate 4, a through hole is formed in the upper connecting steel plate 4, the through hole corresponds to the assembly through hole in the spherical hinge plate 3, and a connecting bolt 5 passes through the through hole and the assembly through hole and is screwed with a nut to fix the spherical hinge plate 3 and the upper connecting steel plate 4.

[0050] Specifically, the through hole in the upper connecting steel plate 4 is four, thereby achieving four-point secure fixation.

[0051] Specifically, the upper sliding rail group 13 is provided with an upper sliding steel bar 8, and an assembly hole is formed in the upper section of the upper connecting rod 6, and the assembly hole and the upper sliding steel bar 8 are in clearance fit, that is, the upper connecting rod 6 can rotate around the upper sliding steel bar 8 and can also translate and slide along the upper sliding steel bar 8.

[0052] Specifically, the lower sliding rail group 14 is provided with a lower sliding steel bar 9, and an assembly hole is formed in the lower section of the lower connecting rod 7, and the assembly hole and the lower sliding steel bar 9 are in clearance fit, that is, the lower connecting rod 7 can rotate around the lower sliding steel bar 9 and can also translate and slide along the lower sliding steel bar 9.

[0053] Specifically, the spherical hinge plate 3 is fixed with the hemispherical body by welding.

[0054] Specifically, the upper sliding rail group 13 includes upper support steel plates 10 arranged at the outer walls of the spherical hinge plate 3, the upper support steel plates 10 are arranged in pairs, a upper sliding steel bar 8 is arranged between the upper support steel plates 10, and the upper sliding steel bar 8 provides a sliding and rotating connection basis for the upper connecting rod 6.

[0055] Specifically, the lower sliding rail group 14 comprises a lower support steel plate 11 arranged at the upper end of the bottom plate 2, the lower support steel plates 11 are arranged in pairs, and a lower sliding steel bar 9 is arranged between the lower support steel plates 11, the lower sliding steel bar 9 provides a sliding and rotating connecting basis for the lower connecting rod 7.

[0056] Yet another embodiment

[0057] A large-angle spherical hinge support seat for column double bias test comprises a bottom plate 2, a spherical hinge assembly is arranged on the bottom plate 2, the upper end of the spherical hinge assembly is connected with a spherical hinge plate 3, an upper sliding rail group 13 is arranged at the spherical hinge plate 3, a lower sliding rail group 14 is arranged at the bottom plate 2, a connecting rod assembly is arranged between the upper sliding rail group 13 and the lower sliding rail group 14, and the connecting rod assembly ensures large-angle rotation of the spherical hinge assembly.

[0058] The spherical hinge assembly comprises a bottom basin 1 arranged at the upper end of the bottom plate 2, a hemispherical body formed at the lower end of the spherical hinge plate 3, and a groove formed at the upper end of the bottom basin 1, the hemispherical body and the groove are combined to form a rotating pair.

[0059] The spherical hinge assembly is located at the center of the bottom plate 2 and the spherical hinge plate 3.

[0060] The upper sliding rail group 13 is arranged at the outer side wall of the spherical hinge plate 3, the lower sliding rail group 14 is arranged at the inner side wall of the bottom plate 2, and the upper sliding rail group 13 and the lower sliding rail group 14 are vertically aligned.

[0061] The upper sliding rail group 13 is movably connected with the upper connecting rod 6, and the lower sliding rail group 14 is movably connected with the lower connecting rod 7.

[0062] The free end of the upper connecting rod 6 is connected with one end of the universal joint group 12, the free end of the lower connecting rod 7 is connected with the other end of the universal joint group 12, and the upper connecting rod 6, the universal joint group 12 and the lower connecting rod 7 are connected to form a connecting rod assembly.

[0063] An assembly through hole is formed in the spherical hinge plate 3 for assembly.

[0064] The bottom plate 2 and the spherical hinge plate 3 are both square in cross section, and the connecting rod assembly is arranged at each of the four outer walls of the spherical hinge plate 3.

[0065] The groove in the bottom basin 1 matched with the hemispherical body is an arc-shaped groove, and the arc-shaped groove is in contact with the hemispherical body.

[0066] The connecting rod assemblies in the left and right side walls of the spherical hinge plate 3 correspond to each other, and the connecting rod assemblies in the front and rear side walls of the spherical hinge plate 3 correspond to each other.

[0067] Specifically, the upper end of the spherical hinge plate 3 is installed with an upper connecting steel plate 4, a through hole is formed in the upper connecting steel plate 4, the through hole corresponds to the assembly through hole in the spherical hinge plate 3, and a connecting bolt 5 is screwed with a nut after passing through the through hole and the assembly through hole, thereby fixing the spherical hinge plate 3 and the upper connecting steel plate 4.

[0068] Specifically, the through hole in the upper connecting steel plate 4 is four, thereby achieving four-point firm fixation.

[0069] Specifically, the upper sliding rail group 13 is provided with an upper sliding steel bar 8, an assembly hole is formed in the upper connecting rod 6, and the assembly hole and the upper sliding steel bar 8 are gap-fitted, that is, the upper connecting rod 6 can rotate around the upper sliding steel bar 8 and can also translate and slide along the upper sliding steel bar 8.

[0070] Specifically, the lower sliding rail group 14 is provided with a lower sliding steel bar 9, an assembly hole is formed in the lower connecting rod 7, and the assembly hole and the lower sliding steel bar 9 are gap-fitted, that is, the lower connecting rod 7 can rotate around the lower sliding steel bar 9 and can also translate and slide along the lower sliding steel bar 9.

[0071] Specifically, the spherical hinge plate 3 is fixed with the hemispherical body by welding.

[0072] Specifically, the upper sliding rail group 13 includes upper support steel plates 10 arranged at the outer wall of the spherical hinge plate 3, the upper support steel plates 10 are in pairs, the upper sliding steel bar 8 is arranged between the upper support steel plates 10, and the upper sliding steel bar 8 provides a sliding and rotating connection basis for the upper connecting rod 6.

[0073] Specifically, the lower sliding rail group 14 includes lower support steel plates 11 arranged at the upper end of the bottom plate 2, the lower support steel plates 11 are in pairs, the lower sliding steel bar 9 is arranged between the lower support steel plates 11, and the lower sliding steel bar 9 provides a sliding and rotating connection basis for the lower connecting rod 7.

[0074] In this embodiment, the universal joint group 12 is quickly threadedly connected with the upper connecting rod 6 and the lower connecting rod 7.

[0075] Specifically, the two movable seats of the universal joint group 12 are provided with connecting threaded sections, the ends of the upper connecting rod 6 and the lower connecting rod 7 are formed with threaded holes, the connecting threaded sections are screwed into the threaded holes, and the universal joint group 12 is quickly connected with the upper connecting rod 6 and the lower connecting rod 7.

[0076] Preferably, the universal joint group 12 and the connecting threaded sections are fixed by welding, and in the specific installation process, the connection between the upper connecting rod 6, the lower connecting rod 7 and the universal joint group 12 is first performed, and then the upper connecting rod 6 and the lower connecting rod 7 are respectively assembled with the upper sliding steel bar 8 and the lower sliding steel bar 9.

[0077] Specifically, the universal joint group 12 comprises a middle seat body 121, the middle seat body 121 is formed with assembly grooves intersecting with each other on both sides, a No. I cross joint 122 is movably connected with the assembly groove on one side, a No. II cross joint 123 is movably connected with the assembly groove on the other side, two free joints of the No. I cross joint 122 are movably connected with a No. I movable seat 124, and two free joints of the No. II cross joint 123 are movably connected with a No. II movable seat 125.

[0078] Specifically, two groups of connecting rod assemblies are connected to each side wall of the spherical hinge plate 3.

[0079] As a preferred embodiment

[0080] The spherical hinge plate 3 is integrally welded by a hemisphere with a diameter of 300 mm and a rectangular steel plate.

[0081] The two upper support steel plates 10 are a group, and the two upper support steel plates 10 are spaced apart by 130 mm.

[0082] The two lower support steel plates 11 are a group, and the two lower support steel plates 11 are spaced apart by 130 mm.

[0083] The working process of the present application is as follows:

[0084] Taking the right rotation of the connecting steel plate 4 as an example

[0085] During the rotation of the connecting steel plate 4, the rotation pair composed of the hemisphere and the bottom basin 1 performs face-to-face rotation, at the same time, the included angle of the middle part of the connecting rod assembly on the left side of the spherical hinge plate 3 increases to perform the opening action, the included angle of the middle part of the connecting rod assembly on the right side of the spherical hinge plate 3 decreases to perform the closing action, at the same time, the connecting rod assemblies on the front side and the rear side of the spherical hinge plate 3 simultaneously perform the angle change and slide along the upper sliding steel bar 8 and the lower sliding steel bar 9.

[0086] The present application adjusts the cooperation relationship between the hemisphere and the groove body in the bottom basin of the spherical hinge plate, realizes large-angle rotation, and provides a sliding and rotating adjustment support basis for the connecting rod assembly through the upper sliding rail group and the lower sliding rail group.

[0087] The present application can realize large-angle bidirectional rotation through the sliding steel bar and the connecting rod assembly, the spherical hinge plate and the bottom basin are in face-to-face contact, compared with the traditional line contact, the stress area is larger, the peak stress on the contact surface is reduced, at the same time, the connecting rod assembly on the outside can limit the maximum displacement of the bidirectional hinge of the support, and prevent the test piece from being separated from the support.

Claims

1. A large angle spherical hinge support for column-biaxial compression testing comprising a base plate (2) characterised in that: The bottom plate (2) is provided with a ball hinge assembly, the upper end of the ball hinge assembly is connected with a ball hinge plate (3), the ball hinge plate (3) is provided with an upper sliding rail group (13), the bottom plate (2) is provided with a lower sliding rail group (14), a connecting rod assembly is arranged between the upper sliding rail group (13) and the lower sliding rail group (14), and the connecting rod assembly ensures large-angle rotation of the ball hinge assembly. The upper sliding rail group (13) is arranged on the outer side wall of the ball hinge plate (3), the lower sliding rail group (14) is arranged on the inner side wall of the bottom plate (2), and the upper sliding rail group (13) and the lower sliding rail group (14) are vertically aligned. The upper sliding rail group (13) is movably connected with an upper connecting rod (6), and the lower sliding rail group (14) is movably connected with a lower connecting rod (7). The free end of the upper connecting rod (6) is connected with one end of a universal joint group (12), the free end of the lower connecting rod (7) is connected with the other end of the universal joint group (12), and the upper connecting rod (6), the universal joint group (12) and the lower connecting rod (7) are connected to form a connecting rod assembly. The upper sliding rail group (13) is provided with an upper sliding steel bar (8), the upper connecting rod (6) is formed with an assembly hole, and the assembly hole and the upper sliding steel bar (8) are in clearance fit, that is, the upper connecting rod (6) can rotate around the upper sliding steel bar (8) and can slide along the upper sliding steel bar (8). The lower sliding rail group (14) is provided with a lower sliding steel bar (9), the lower connecting rod (7) is formed with an assembly hole, and the assembly hole and the lower sliding steel bar (9) are in clearance fit, that is, the lower connecting rod (7) can rotate around the lower sliding steel bar (9) and can slide along the lower sliding steel bar (9).

2. A large angle spherical hinge support for a column-bi-axial test according to claim 1, characterized in that: The ball hinge assembly comprises a bottom basin (1), the bottom basin (1) is arranged at the upper end of the bottom plate (2), the lower end of the ball hinge plate (3) is formed into a hemispherical body, the upper end of the bottom basin (1) is formed into a groove, and the hemispherical body and the groove are combined to form a rotating pair.

3. A large angle spherical hinge support for a column-bi-axial test according to claim 2, characterized in that: The ball hinge assembly is located at the center of the bottom plate (2) and the ball hinge plate (3).

4. A large angle spherical hinge support for column-biaxial test according to claim 1, characterized in that: Assembly through holes are formed in the ball hinge plate (3) for assembly.

5. A large angle spherical hinge support for column-biaxial test according to claim 1, characterized in that: The bottom plate (2) and the ball hinge plate (3) are both square in cross section, and the connecting rod assemblies are arranged at the four outer walls of the ball hinge plate (3).

6. A large angle spherical hinge support for column-biaxial test according to claim 2, characterized in that: The groove matched with the hemispherical body in the bottom basin (1) is an arc-shaped groove, and the arc-shaped groove is in contact with the hemispherical body.

7. A large angle spherical hinge support for a column-bi-axial test according to claim 5, characterized in that: The connecting rod assemblies in the left and right side walls of the ball hinge plate (3) correspond to each other, and the connecting rod assemblies in the front and rear side walls of the ball hinge plate (3) correspond to each other.

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