A radial spherical bearing test loading device

Abstract

The present invention provides a radial spherical bearing test loading device, which relates to the technical field of structural engineering test, and includes an upper hemisphere, a lower hemisphere, a locking mechanism and a supporting mechanism; an upper equatorial ring beam and a lower equatorial ring beam are fixedly arranged at opposite ends of the upper hemisphere and the lower hemisphere, respectively; the locking mechanism includes a lock seat, a lock rod, a lock buckle and a lock tongue; the lock seat is fixedly arranged on the lower equatorial ring beam, the lock buckle is rotatably connected to the lock seat, the lock buckle is provided with a coil spring for returning it, one end of the lock rod passes through the lower equatorial ring beam and is slidably connected thereto, the lock rod is connected to one end of the lock buckle to drive it to rotate, the lock tongue is fixedly arranged on the upper equatorial ring beam, the lock tongue is provided with a lock groove, the lock groove is clamped with one end of the lock buckle away from the lock rod, the number of the locking mechanisms is multiple and evenly distributed on the ring side of the lower equatorial beam; the supporting mechanism is connected to the lock rod to drive it to move upward. It solves the problem that the test device in the prior art is not easy to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to the technical field of structural engineering tests, in particular to a radial spherical plain bearing test loading device. Background Art

[0002] Radial spherical plain bearings are widely used in large-span special-shaped steel structures due to their good mechanical properties. To ensure safety, it is necessary to conduct a 1:1 simulation test on heavy radial spherical plain bearings to verify their safety under the designed working conditions. Conventional bearing test equipment can often only be used for bearing loading tests at specific angles. For heavy radial spherical plain bearings, conventional loading devices cannot meet their force and working conditions requirements. Patent No. CN103196684A, named All-round Universal Loading System for Structural Tests, discloses a device that can perform loading tests in multiple directions, but its upper and lower hemispherical reaction frames are connected by bolts, which is inconvenient to disassemble and assemble. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a radial spherical plain bearing test loading device, which solves the problem in the prior art that the upper hemisphere and the lower hemisphere are connected by bolts, resulting in inconvenience in assembly and disassembly.

[0004] According to an embodiment of the present invention, a radial spherical bearing test loading device comprises an upper hemisphere, a lower hemisphere, a locking mechanism and a supporting mechanism; an upper equatorial ring beam and a lower equatorial ring beam are fixedly provided at opposite ends of the upper hemisphere and the lower hemisphere, respectively, and a plurality of bolt holes are provided on each hemisphere and the equatorial ring beam; the locking mechanism comprises a locking seat, a locking rod, a locking buckle and a locking tongue, the locking seat is fixedly provided on the lower equatorial ring beam, the locking buckle is rotatably connected to the locking seat, the locking buckle is provided with a coil spring for returning it to its position, one end of the locking rod passes through the lower equatorial ring beam and is slidably connected thereto, the locking rod is connected to one end of the locking buckle to drive it to rotate, the locking tongue is fixedly provided on the upper equatorial ring beam, the locking tongue is provided with a locking groove, the locking groove is clamped with an end of the locking buckle away from the locking rod, the number of the locking mechanisms is multiple and evenly distributed on the ring side of the lower equatorial beam; the supporting mechanism is connected to the locking rod to drive it to move upward.

[0005] Compared with the prior art, the present invention has the following beneficial effects: by rotatably connecting the lock catch to the lock seat and providing a coil spring on the lock catch to return it, the lock catch can automatically return to its original position when the external force is removed, so as to ensure the smooth insertion of the lock tongue; by respectively fixing the lock tongue and the lock seat on the upper and lower equatorial ring beams, passing one end of the lock rod through the lower equatorial ring beam and connecting the lock rod with one end of the lock catch, the lock rod can move downward to drive the lock catch to rotate, so that the end of the lock catch away from the lock rod is clamped in the lock groove, and then The upper hemisphere and the lower hemisphere are locked; by connecting the top support mechanism with each locking rod, the top support mechanism drives the locking rod to move upward, and the lock buckle returns to its original position under the action of the coil spring until the lock buckle exits the lock tongue. At this time, the upper hemisphere and the lower hemisphere are unlocked. When locking, it is only necessary to insert the lock tongue on the upper hemisphere into the lock seat of the lower hemisphere to complete the locking; therefore, by adopting the above scheme, the locking of the upper hemisphere and the lower hemisphere is convenient and the top support mechanism can realize the automatic unlocking of the upper hemisphere and the lower hemisphere, and the entire test loading device is convenient to disassemble and assemble.

[0006] Furthermore, a lower pressure plate is fixedly provided at the bottom end of each locking rod, and the top support mechanism includes a top support rod and a driving assembly, and two annular unlocking plates are symmetrically arranged on the top support rod along the radial direction of the lower hemisphere, and each unlocking plate is used to drive each lower pressure plate to move upward, and the driving assembly is connected to the top support rod to drive it to move upward.

[0007] Furthermore, the driving assembly includes a support frame, a rotating shaft, a guide block and a motor, the rotating shaft is connected to the support frame for transverse rotation, the rotating shaft is sleeved with a spiral track, the top of the top support rod is fixedly provided with a top support block for lifting the upper hemisphere, the bottom of the top support rod is connected to a roller for transverse rotation, the roller matches the track and rolls along the track, the guide block is sleeved on the top support rod, the guide block is slidably connected to the support frame through a cross bar, the motor is connected to the rotating shaft to drive it to rotate, the top support rod is fixedly provided with a platform, two electric push rods are installed on the platform, and the output end of each electric push rod is respectively connected to each unlocking plate.

[0008] Furthermore, an upper pressure plate is fixed to the top of the locking rod, the locking buckle is in the shape of a triangular block, one of the vertices of the locking buckle is rotatably connected to the lock seat, and the other two vertices of the locking buckle are transversely bent to form a clamping part, and the two clamping parts are respectively clamped to the lock groove and the upper pressure plate.

[0009] Furthermore, each vertex of the lock buckle is in an arc transition, the lock groove is a fan-shaped groove, and opposite sides of the two clamping parts respectively abut against the bottom end of the lock groove and the bottom end of the upper pressure plate.

[0010] Furthermore, each of the locking mechanisms includes two lock buckles, and the two lock buckles are symmetrically arranged on both sides of the locking rod.

[0011] Furthermore, the top support block is a dome that is compatible with the inner cavity of the upper hemisphere.

[0012] Furthermore, the dome is a hollow shell.

[0013] Furthermore, the roller is provided with an annular groove matching the outer contour of the track, and two opposite side surfaces of the roller respectively abut against the end surface of the track.

[0014] Furthermore, a plurality of vertical support columns are fixedly provided on the lower equatorial ring beam, each of the support columns is evenly distributed on the ring side of the lower equatorial ring beam, and two adjacent support columns are fixedly connected via the support ring beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A front view of

[0017] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 It is a structural schematic diagram of a locking mechanism according to an embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of the coordination structure of the locking mechanism and the supporting mechanism of an embodiment of the present invention;

[0020] Figure 6 for Figure 5 Front view of .

[0021] In the above drawings: 1, upper hemisphere; 2, lower hemisphere; 3, upper equatorial ring beam; 4, lower equatorial ring beam; 5, lock seat; 6, lock rod; 7, lock buckle; 701, clamping part; 8, lock tongue; 9, coil spring; 10, lower pressure plate; 11, top support rod; 12, unlocking plate; 13, support frame; 14, rotating shaft; 15, guide block; 16, track; 17, top support block; 18, roller; 19, cross bar; 20, platform; 21, electric push rod; 22, upper pressure plate; 23, support column; 24, support ring beam. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device, including an upper hemisphere 1, a lower hemisphere 2, a locking mechanism and a supporting mechanism; the upper hemisphere 1 and the lower hemisphere 2 are both formed by interweaving warp ring beams and weft ring beams, and the upper equatorial ring beam 3 and the lower equatorial ring beam 4 are respectively fixed at the opposite ends of the upper hemisphere 1 and the lower hemisphere 2, and each ring beam and the equatorial ring beam are provided with a plurality of bolt holes for fixing the test piece and the loading assembly; the locking mechanism includes a lock seat 5, a lock rod 6, a lock buckle 7 and a lock tongue 8, and the lock seat 5 is fixed on the lower equatorial ring beam 4. The lock buckle 7 is rotatably connected to the lock seat 5, and the lock buckle 7 is provided with a coil spring 9 for returning it to its original position. One end of the lock rod 6 passes through the lower equatorial ring beam 4 and is slidably connected thereto. The lock rod 6 is connected to one end of the lock buckle 7 to drive it to rotate. The lock tongue 8 is fixed on the upper equatorial ring beam 3, and the lock tongue 8 is provided with a lock groove, which is clamped with one end of the lock buckle 7 away from the lock rod 6. The number of the locking mechanisms is multiple and evenly distributed on the ring side of the lower equatorial beam; the supporting mechanism is connected to the lock rod 6 to drive it to move upward.

[0024] By rotating the lock buckle 7 and connecting it to the lock seat 5 and providing a coil spring 9 on the lock buckle 7 to return it, the lock buckle 7 can automatically return to its original position when the external force is removed, so as to ensure the smooth insertion of the lock tongue 8; by fixing the lock tongue 8 and the lock seat 5 on the upper and lower equatorial ring beams 4 respectively, passing one end of the lock rod 6 through the lower equatorial ring beam 4 and connecting the lock rod 6 with one end of the lock buckle 7, the lock rod 6 moves downward to drive the lock buckle 7 to rotate, so that the end of the lock buckle 7 away from the lock rod 6 is clamped in the lock groove, thereby locking the upper hemisphere 1 and the lower hemisphere 2. Tighten; by connecting the supporting mechanism with each locking rod 6, the supporting mechanism drives the locking rod 6 to move upward, and the lock buckle 7 returns to its original position under the action of the coil spring 9 until the lock buckle 7 exits the lock tongue 8. At this time, the upper hemisphere 1 and the lower hemisphere 2 are unlocked. When locking, it is only necessary to insert the lock tongue 8 on the upper hemisphere 1 into the lock seat 5 of the lower hemisphere 2 to complete the locking; therefore, by adopting the above scheme, the locking of the upper hemisphere 1 and the lower hemisphere 2 is convenient and the supporting mechanism can realize the automatic unlocking of the upper hemisphere 1 and the lower hemisphere 2, and the entire test loading device is convenient to disassemble and assemble.

[0025] like Figure 5 and Figure 6As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device. In order to facilitate the support mechanism to drive the locking rod 6 to move upward and thus realize the automatic unlocking of the upper hemisphere 1 and the lower hemisphere 2, a lower pressure plate 10 is fixed to the bottom end of each locking rod 6. The support mechanism includes a support rod 11 and a driving assembly. Two annular unlocking plates 12 are symmetrically arranged along the radial direction of the lower hemisphere 2 on the support rod 11. Each unlocking plate 12 is located below the lower pressure plate 10. Each unlocking plate 12 moves upward with the support rod 11, thereby driving each lower pressure plate 10 to move upward. The driving assembly is connected to the support rod 11 to drive it to move upward.

[0026] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device, the driving assembly includes a support frame 13, a rotating shaft 14, a guide block 15 and a motor (not shown in the figure), the rotating shaft 14 is connected to the support frame 13 in a transverse rotation, the rotating shaft 14 is sleeved with a spiral track 16, the top of the top support rod 11 is fixedly provided with a top support block 17 for lifting the upper hemisphere 1, the bottom of the top support rod 11 is connected to a roller 18 in a transverse rotation, the roller 18 matches the track 16 and rolls along the track 16, in order to ensure that the top support rod 11 moves smoothly in the vertical direction and the transverse direction, the guide block 15 is sleeved on the top support rod 11, and the guide block 15 is slidably connected to the support frame 13 through a cross bar 19, that is, one side of the cross bar 19 The end is fixed on the side of the guide block 15, the other end of the cross bar 19 passes through the support frame 13 and is slidably connected thereto, the motor is connected to the rotating shaft 14 to drive it to rotate, and a platform 20 is fixed on the top support rod 11, and two electric push rods 21 are installed on the platform 20, and the output ends of the electric push rods 21 are respectively connected to the unlocking plates 12; it should be understood that the lift of the spiral track 16 and the length of the top support rod 11 are determined by actual needs. During actual use, the motor and the electric push rods 21 need to be electrically connected to the controller to make them work in coordination. The above-mentioned controller is a conventional PLC controller or other controller that can realize the above-mentioned functions. Its specific structure and electrical connection method are conventional technical means in the field, which will not be repeated here.

[0027] By adopting the above scheme, when it is necessary to separate the upper hemisphere 1 and the lower hemisphere 2, the motor drives the rotating shaft 14 to rotate forward, and the spiral track 16 rotates with the rotating shaft 14, thereby driving the roller 18 to move upward and the roller 18 also moves to the right along the axial direction of the rotating shaft 14, that is, the roller 18 drives the top support rod 11 to move vertically upward and horizontally to the right at the same time, and the top support rod 11 drives the platform 20 to move upward and to the right together until each unlocking plate 12 respectively conflicts with each lower pressure plate 10 and drives the lower pressure plate 10 to move upward to unlock the upper hemisphere 1 and the lower hemisphere 2. At this time, the top support block 17 just supports the upper hemisphere 1, and then each electric push rod 21 contracts to make each unlocking plate 12 withdraw from the contact with the lower pressure plate 10, so that the top support block 17 continues to move upward and to the right under the drive of the top support rod 11, thereby lifting the upper hemisphere 1 upward and moving it to the right, increasing the operating space of the operator.

[0028] like Figure 3 and Figure 4 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device, the top end of the locking rod 6 is fixedly provided with an upper pressure plate 22, the lock buckle 7 is in the shape of a triangular block, one of the vertices of the lock buckle 7 is rotatably connected to the lock seat 5 through a rotating rod, the two ends of the coil spring 9 are respectively fixed on the lock buckle 7 and the rotating rod, the other two vertices of the lock buckle 7 are transversely bent to form a clamping portion 701, and the two clamping portions 701 are respectively clamped on the lock groove and the upper pressure plate 22. It should be understood that when the clamping portion 701 at the upper end of the lock buckle 7 is clamped with the lock groove, a sufficient clamping amount should be ensured, that is, the length of the clamping portion 701 at the upper end of the lock buckle 7 extending into the lock groove needs to be long enough so that when the lock tongue 8 is subjected to an upward external force, the lock tongue 8 can remain locked with the lock buckle 7 without driving the lock buckle 7 to rotate clockwise; the above scheme is adopted to enhance the strength of the lock buckle 7, and the lock buckle 7 has a simple structure and is easy to manufacture and install.

[0029] like Figure 3 and Figure 4 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device, wherein each vertex of the lock buckle 7 is an arc transition, the lock groove is a fan-shaped groove, and the opposite sides of the two clamping parts 701 respectively abut against the bottom end of the lock groove and the bottom end of the upper pressure plate 22; adopting the above scheme, when the locking rod 6 moves upward, the lock buckle 7 rotates clockwise under the action of the coil spring 9 so that the clamping part 701 clamped in the lock groove can exit the lock groove more smoothly.

[0030] like Figure 3 and Figure 4 As shown, an embodiment of the present invention provides a radial spherical plain bearing test loading device. To enhance the locking effect, each of the locking mechanisms includes two lock buckles 7 , and the two lock buckles 7 are symmetrically arranged on both sides of the locking rod 6 .

[0031] like Figure 1 , Figure 5 and Figure 6 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device. In order to enhance the stability of the supporting block 17 when supporting the upper hemisphere 1, the supporting block 17 is a dome that is compatible with the inner cavity of the upper hemisphere 1.

[0032] like Figure 1 , Figure 5 and Figure 6 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device. In order to reduce weight, the dome is a hollow shell. During actual use, reinforcing ribs can be added in the dome as needed to meet the strength requirements of the dome.

[0033] like Figure 1 As shown, an embodiment of the present invention proposes a radial spherical bearing test loading device. In order to achieve stable support of the entire device, a plurality of vertical support columns 23 are fixedly provided on the lower equatorial ring beam 4. Each of the support columns 23 is evenly distributed on the ring side of the lower equatorial ring beam 4, and two adjacent support columns 23 are fixedly connected by a support ring beam 24.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A radial spherical plain bearing test loading device, characterized in that: It comprises an upper hemisphere (1), a lower hemisphere (2), a locking mechanism and a supporting mechanism; An upper equatorial ring beam (3) and a lower equatorial ring beam (4) are fixedly provided at opposite ends of the upper hemisphere (1) and the lower hemisphere (2), respectively, and a plurality of bolt holes are provided on each hemisphere and the equatorial ring beam; The locking mechanism comprises a lock seat (5), a lock rod (6), a lock buckle (7) and a lock tongue (8); the lock seat (5) is fixedly mounted on the lower equatorial ring beam (4); the lock buckle (7) is rotatably connected to the lock seat (5); a coil spring (9) is provided on the lock buckle (7) for returning the lock buckle; one end of the lock rod (6) passes through the lower equatorial ring beam (4) and is slidably connected thereto; the lock rod (6) is connected to one end of the lock buckle (7) for driving the lock buckle (7) to rotate; the lock tongue (8) is fixedly mounted on the upper equatorial ring beam (3); the lock tongue (8) is provided with a lock groove; the lock groove is clamped with one end of the lock buckle (7) facing away from the lock rod (6); and the number of the locking mechanisms is plural and they are evenly distributed on the ring side of the lower equatorial ring beam (4); The supporting mechanism is connected to the locking rod (6) to drive the locking rod (6) to move upward; A lower pressure plate (10) is fixedly provided at the bottom end of each locking rod (6), and the supporting mechanism comprises a supporting rod (11) and a driving assembly, and two annular unlocking plates (12) are symmetrically arranged along the radial direction of the lower hemisphere (2) on the supporting rod (11), and each unlocking plate (12) is used to drive each lower pressure plate (10) to move upward, and the driving assembly is connected to the supporting rod (11) to drive it to move upward; The driving assembly comprises a support frame (13), a rotating shaft (14), a guide block (15) and a motor. The rotating shaft (14) is connected to the support frame (13) in a transverse rotational manner. A spiral track (16) is sleeved on the rotating shaft (14). A supporting block (17) for lifting the upper hemisphere (1) is fixedly provided at the top of the supporting rod (11). A roller (18) is connected to the bottom of the supporting rod (11) in a transverse rotational manner. The roller (18) matches the track (16). and rolls along the track (16); the guide block (15) is sleeved on the top support rod (11); the guide block (15) is slidably connected to the support frame (13) via a cross bar (19); the motor is connected to the rotating shaft (14) to drive it to rotate; a platform (20) is fixedly provided on the top support rod (11); two electric push rods (21) are installed on the platform (20); and the output end of each electric push rod (21) is respectively connected to each unlocking plate (12); The top support block (17) is a dome adapted to the inner cavity of the upper hemisphere (1); The roller (18) is provided with an annular groove matching the outer contour of the track (16), and two opposite side surfaces of the roller (18) respectively abut against the end surface of the track (16).

2. A radial spherical plain bearing test loading device as claimed in claim 1, characterized in that: An upper pressure plate (22) is fixedly provided at the top end of the locking rod (6); the locking buckle (7) is in the shape of a triangular block; one of the vertices of the locking buckle (7) is rotatably connected to the locking seat (5); the other two vertices of the locking buckle (7) are transversely bent to form a clamping portion (701); the two clamping portions (701) are respectively clamped to the locking groove and the upper pressure plate (22).

3. A radial spherical plain bearing test loading device as claimed in claim 2, characterized in that: Each vertex of the lock buckle (7) is in an arc transition, the lock groove is a fan-shaped groove, and opposite sides of the two clamping portions (701) respectively abut against the bottom end of the lock groove and the bottom end of the upper pressing plate (22).

4. A radial spherical plain bearing test loading device as claimed in claim 2, characterized in that: Each of the locking mechanisms comprises two lock buckles (7), and the two lock buckles (7) are symmetrically arranged on both sides of the locking rod (6).

5. A radial spherical plain bearing test loading device as claimed in claim 4, characterized in that: The dome is a hollow shell.

6. A radial spherical plain bearing test loading device as claimed in claim 1, characterized in that: A plurality of vertical support columns (23) are fixedly arranged on the lower equatorial ring beam (4), each of the support columns (23) is evenly distributed on the ring side of the lower equatorial ring beam (4), and two adjacent support columns (23) are fixedly connected via a support ring beam (24).

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