Support with motion locking structure

Abstract

The present invention provides a support with a motion locking structure, the support including an upper seat plate, a lower seat plate, a spherical crown middle seat plate and a limit adjustment device, the spherical crown middle seat plate is arranged between the upper seat plate and the lower seat plate, the limit adjustment device is installed on the upper seat plate, along the longitudinal bridge direction and / or the transverse bridge direction, the limit adjustment device is arranged on both sides of the spherical crown middle seat plate, the limit adjustment device includes a wedge-shaped limit locking structure, the wedge-shaped limit locking structure includes a wedge-shaped limit body and a wedge block, the wedge-shaped limit body is fixed on the pier, one end of the wedge block is fixedly connected to the upper seat plate, the other end of the wedge block is connected to the wedge limit body, and the other end of the wedge block is confined inside the wedge limit body. The support with a motion locking structure described in the present invention adopts a wedge-shaped limit locking structure instead of a traditional cantilever limit plate, so that the support can withstand greater horizontal forces, thereby enabling the support to have a beam-falling prevention function.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge structures or buildings, and in particular to a support with a motion locking structure. Background Art

[0002] Bridge bearings are key components connecting the bridge's upper and lower structures. Serving as beam support points, they evenly transfer the forces acting on the beam to the piers. The bearing's stopper plate primarily resists the lateral forces acting on the bearing. With the advancement of bearing design, the structure and function of stopper plates have expanded. Common stopper plates include integral, pin-and-pin, and keyway types.

[0003] Most current bridge bearing limiters are cantilever structures, which are less resistant to horizontal forces. To provide sufficient horizontal reaction force, the cantilever portion of the limiter is bulky. When the beam is subjected to loads such as earthquakes, existing limiters are difficult to replace after damage, and most do not prevent the beam from falling.

[0004] The patent application number CN202010139398.2 in the prior art discloses an upper limit movable spherical bearing for a bridge, comprising an upper seat plate, a lower seat plate, a spherical crown, and two limit adjustment devices; the spherical crown is arranged between the upper seat plate and the lower seat plate, and is slidably connected to the upper seat plate and the lower seat plate; the two limit adjustment devices are arranged on the upper seat plate, and along the longitudinal direction of the upper limit movable spherical bearing, the two limit adjustment devices are located on both sides of the spherical crown; the limit adjustment device can adjust the distance between the two limit adjustment devices along the longitudinal direction of the upper limit movable spherical bearing to limit the maximum distance that the upper seat plate can slide relative to the lower seat plate along the longitudinal direction of the upper limit movable spherical bearing. Although this patent can reduce the use of rail telescopic adjusters and reduce the construction cost and difficulty of the bridge, the limit device is a cantilever structure, which has poor stress resistance when subjected to horizontal force and does not have the function of preventing the beam from falling.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of the present invention is to propose a support with a motion locking structure to solve the problem in the prior art that the limiting device is a cantilever structure, has poor stress resistance when bearing horizontal force, and has no anti-falling beam function.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A support with a motion locking structure, the support comprising an upper seat plate, a lower seat plate, a spherical crown middle seat plate and a limit adjustment device, the spherical crown middle seat plate being arranged between the upper seat plate and the lower seat plate, the limit adjustment device being mounted on the upper seat plate, and the limit adjustment device being arranged on both sides of the spherical crown middle seat plate along the longitudinal bridge direction and / or the transverse bridge direction; the limit adjustment device comprising a wedge-shaped limit locking structure, the wedge-shaped limit locking structure comprising a wedge-shaped limit body and a wedge block, the wedge limit body being fixed on the pier, one end of the wedge block being fixedly connected to the upper seat plate, the other end of the wedge block being connected to the wedge limit body, and the other end of the wedge block being confined inside the wedge limit body.

[0009] The support with a motion locking structure described in the present invention adopts a wedge-shaped limiting locking structure to replace the traditional cantilever limiting plate, so that the support can withstand a greater horizontal force, thereby making the support have a beam-falling prevention function.

[0010] Furthermore, along the longitudinal bridge direction or the transverse bridge direction, the limit adjustment device is arranged on both sides of the seat plate in the spherical crown, and the wedge block is movably connected to the wedge-shaped limit body.

[0011] This setting can not only enable the support to withstand greater horizontal forces, thereby giving the support a beam-falling prevention function, but also facilitate the adjustment of the horizontal limit displacement of the support.

[0012] Furthermore, a wedge-shaped mounting groove is provided in the wedge-shaped limiter, the wedge block is provided in the wedge-shaped mounting groove, a notch is provided in the wedge-shaped mounting groove on a side close to the upper seat plate, the width of the notch is b1, the width of the wedge block on a side close to the notch is b2, b2>b1, a wedge block connecting rod is provided on the wedge block on a side close to the upper seat plate, and the wedge block connecting rod passes through the notch and is connected to the upper seat plate.

[0013] When the support moves to the limit horizontal displacement, this arrangement enables the wedge block to be confined in the wedge-shaped installation groove.

[0014] Furthermore, the wedge-shaped limiting locking structure also includes a support displacement adjustment device, which is used to adjust the horizontal limit displacement of the support.

[0015] By setting the support displacement adjustment device, the distance between the wedge blocks of the two wedge-shaped limiting locking structures can be adjusted along the longitudinal bridge direction to limit the maximum sliding distance of the upper seat plate relative to the lower seat plate along the longitudinal bridge direction.

[0016] Furthermore, a support displacement gap is formed between the wedge-shaped mounting groove and a side of the wedge-shaped block away from the upper seat plate, and the support displacement adjustment device is arranged in the support displacement gap.

[0017] This arrangement facilitates the support displacement adjustment device to adjust the support displacement gap.

[0018] Furthermore, the support displacement adjustment device includes a gap adjustment steel plate and a gap adjustment block, the gap adjustment steel plate is arranged between the wedge-shaped limiter and the gap adjustment block, and the gap adjustment connector installs the gap adjustment block and the gap adjustment steel plate on the wedge-shaped limiter.

[0019] Furthermore, a first wedge surface friction pair and a second wedge surface friction pair are provided between the side surface of the wedge-shaped mounting groove and the side surface of the wedge block, and a third wedge surface friction pair is provided between the bottom surface of the wedge-shaped mounting groove and the bottom surface of the wedge block.

[0020] On the one hand, this arrangement can reduce the friction of the wedge block sliding in the wedge installation, and on the other hand, the friction coefficient of the support and the wedge-shaped limit locking structure as a whole can be adjusted according to design requirements.

[0021] Furthermore, a connecting device is installed between the wedge-shaped limit locking structure and the upper seat plate, and the connecting device includes a ball universal joint, an articulated link, a connecting hinge and a connecting block. One end of the articulated link is connected to the ball universal joint, and the other end of the articulated link is hinged to the connecting block through the connecting hinge. One end of the connecting device is rotatably connected to the wedge-shaped limit locking structure through the ball universal joint, and the other end of the connecting device is fixedly connected to the upper seat plate through the connecting block.

[0022] The connecting device connects the wedge-shaped limit locking structure to the upper base plate and transmits the support's rotation and horizontal displacement. The ball joint transmits the support's horizontal force and rotation, while the connecting hinge and ball joint transmit the support's vertical rotation.

[0023] Furthermore, the limit adjustment device also includes a limit device, and the limit device is arranged on the connecting device.

[0024] The setting of the limit device can, on the one hand, constrain the movement of the support in the non-main displacement direction; on the other hand, it can prevent the connecting hinge and the ball joint from over-rotating, effectively improving the safety and reliability of the support's force.

[0025] Furthermore, the limiting device is provided on the hinged connecting rod.

[0026] The present invention proposes a support with a motion locking structure. Compared with the prior art, the support with a motion locking structure described in the present invention has the following beneficial effects:

[0027] 1) The support with a motion locking structure described in the present invention adopts a wedge-shaped limit locking structure instead of a traditional cantilever limit plate, so that the support can withstand a larger horizontal force, thereby giving the support a beam-falling prevention function, while realizing the rotation and horizontal movement of the support.

[0028] 2) The support with a motion locking structure described in the present invention, the support displacement adjustment device can adjust the horizontal limit displacement of the support.

[0029] 3) The present invention provides a support with a motion locking structure. The setting of the limit device can, on the one hand, constrain the movement of the support in the non-main displacement direction; on the other hand, it can prevent the connecting hinge and the ball joint from over-rotating, effectively improving the safety and reliability of the support's force.

[0030] 4) The support with a motion locking structure described in the present invention has a limit adjustment device that can be set along the longitudinal bridge direction and / or the transverse bridge direction, which is independent of the structure of the upper seat plate, the spherical crown middle seat plate and the lower seat plate of the support body, and can reduce the difficulty of installing and manufacturing the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of a partial cross-sectional structure in a longitudinal direction of a support with a motion locking structure according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of a half-section structure in the longitudinal direction of a support with a motion locking structure according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic top view and cross-sectional view of a wedge-shaped locking structure of a support with a motion locking structure according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic top view of a cross-sectional structure of a position limiting device of a support with a motion locking structure according to an embodiment of the present invention;

[0035] Figure 5 This is a side structural schematic diagram of a position limiting device of a support with a motion locking structure according to an embodiment of the present invention;

[0036] Figure 6 This is a structural schematic diagram of a gap-adjusting steel plate of a support with a motion locking structure according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic structural diagram of a gap adjustment block of a support with a motion locking structure according to an embodiment of the present invention;

[0038] Figure 8The figure is a structural schematic diagram of a ball-type universal joint with a support having a motion locking structure according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Pier; 2. Wedge-shaped limiter; 3. Support displacement gap; 4. Second wedge surface friction pair; 5. Wedge block; 51. Wedge block connecting rod; 6. Third wedge surface friction pair; 7. Ball joint; 8. Limiting device; 81. Limiting hole; 82. Third slide plate; 9. Connecting hinge; 10. Wedge-shaped mounting groove; 101. Notch; 11. First connecting piece; 12. Gap adjustment connecting piece; 13. Dust cover; 14. Second connecting piece; 15. Connecting block; 16. Gap adjustment block; 161. Second mounting hole; 17. Gap adjustment steel plate; 171. First mounting hole; 18. Upper seat plate; 19. Sealing device; 20. First non-metallic slide plate; 21. Spherical crown middle seat plate; 22. Lower seat plate; 23. Second non-metallic slide plate; 24. First wedge surface friction pair; 25. Articulated connecting rod. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] Example 1

[0044] This embodiment provides a support with a motion locking structure, such as Figure 1 and Figure 2 As shown, the support includes an upper seat plate 18, a lower seat plate 22, a spherical crown middle seat plate 21 and a limit adjustment device. The spherical crown middle seat plate 21 is arranged between the upper seat plate 18 and the lower seat plate 22. The limit adjustment device is installed on the upper seat plate 18. Along the longitudinal bridge direction and / or the transverse bridge direction, the limit adjustment device is arranged on both sides of the spherical crown middle seat plate 21; the limit adjustment device includes a wedge-shaped limit locking structure, such as Figure 1As shown, the wedge-shaped limit locking structure includes a wedge-shaped limit body 2 and a wedge block 5. The wedge-shaped limit body 2 is fixed on the pier 1, one end of the wedge block 5 is fixedly connected to the upper seat plate 18, and the other end of the wedge block 5 is movably connected to the wedge-shaped limit body 2, and the other end of the wedge block 5 is confined inside the wedge-shaped limit body 2.

[0045] The support with a motion locking structure described in this embodiment adopts a wedge-shaped limit locking structure instead of a traditional cantilever limit plate, so that the support can withstand a greater horizontal force and at the same time enables the support to have a beam-falling prevention function.

[0046] Specifically, along the longitudinal bridge direction or the transverse bridge direction, the limit adjustment device is arranged on both sides of the spherical crown middle seat plate 21, and the wedge block 5 is movably connected to the wedge-shaped limit body 2.

[0047] In this embodiment, if Figure 1 and Figure 2 As shown, along the longitudinal bridge direction, two limit adjustment devices are arranged on both sides of the spherical crown middle seat plate 21, and the wedge block 5 is movably connected to the wedge-shaped limiter 2. At this time, the longitudinal bridge direction is the main displacement direction, and the transverse bridge direction is the non-main displacement direction.

[0048] Specifically, such as Figure 1 and Figure 3 As shown, a wedge-shaped mounting groove 10 is provided in the wedge-shaped limiter 2, the wedge block 5 is provided in the wedge-shaped mounting groove 10, a notch 101 is provided in the wedge-shaped mounting groove 10 on the side close to the upper seat plate 18, the width of the notch 101 is b1, the width of the wedge block 5 on the side close to the notch 101 is b2, b2>b1, a wedge block connecting rod 51 is provided on the side of the wedge block 5 close to the upper seat plate 18, and the wedge block connecting rod 51 passes through the notch 101 and is connected to the upper seat plate 18.

[0049] When the support moves to the limit horizontal displacement, this arrangement enables the wedge block 5 to be confined in the wedge-shaped mounting groove 10.

[0050] More specifically, the width of the notch 101 is b1, the width of the wedge block 5 on the side close to the notch 101 is b2, and the width of the wedge block connecting rod 51 is b3, where b3<b1.

[0051] This arrangement facilitates the wedge connecting rod 51 to pass through the notch 101 and connect with the upper seat plate 18 .

[0052] Specifically, such as Figure 1 and Figure 3 As shown, the wedge-shaped limiting locking structure further includes a support displacement adjustment device, which is used to adjust the horizontal limit displacement of the support.

[0053] By setting the support displacement adjustment device, the distance between the two wedge blocks 5 of the wedge-shaped limiting locking structure can be adjusted along the longitudinal bridge direction to limit the maximum sliding distance of the upper seat plate 18 relative to the lower seat plate 22 along the longitudinal bridge direction.

[0054] Specifically, such as Figure 1 and Figure 3 As shown, a support displacement gap 3 is formed between the wedge-shaped mounting groove 10 and the side of the wedge block 5 away from the upper seat plate 18 , and the support displacement adjustment device is arranged in the support displacement gap 3 .

[0055] This arrangement facilitates the support displacement adjustment device to adjust the support displacement gap 3 .

[0056] Specifically, such as Figure 1 and Figure 3 As shown, the support displacement adjustment device includes a gap adjustment steel plate 17 and a gap adjustment block 16. The gap adjustment steel plate 17 is arranged between the wedge-shaped limiter 2 and the gap adjustment block 16. The gap adjustment connector 12 installs the gap adjustment block 16 and the gap adjustment steel plate 17 on the wedge-shaped limiter 2.

[0057] This arrangement can adjust the displacement of the support by adjusting the number of gap-adjusting steel plates 17 .

[0058] More specifically, Figure 6 As shown, a first mounting hole 171 is provided on the gap adjustment steel plate 17. Figure 7 As shown, a second mounting hole 161 is provided on the gap adjustment block 16 , and the gap adjustment connector 12 passes through the second mounting hole 161 and the first mounting hole 171 in sequence to fix the gap adjustment block 16 and the gap adjustment steel plate 17 on the wedge-shaped limiting body 2 .

[0059] Specifically, such as Figure 1 and Figure 3 As shown, a first wedge surface friction pair 24 and a second wedge surface friction pair 4 are arranged between the side surface of the wedge-shaped mounting groove 10 and the side surface of the wedge block 5, and a third wedge surface friction pair 6 is arranged between the bottom surface of the wedge-shaped mounting groove 10 and the bottom surface of the wedge block 5.

[0060] On the one hand, this arrangement can reduce the friction force of the wedge block 5 sliding in the wedge-shaped mounting groove 10, and on the other hand, the friction coefficient of the support and the wedge-shaped limiting locking structure as a whole can be adjusted according to design requirements.

[0061] When the support is forced to move to the extreme position, the wedge block 5 can automatically center on the support movement axis under the joint action of the second wedge surface friction pair 4 and the first wedge surface friction pair 24, so that the support can provide a larger limiting force.

[0062] Specifically, a connecting device is installed between the wedge-shaped limit locking structure and the upper seat plate 18, and the connecting device includes a ball-type universal joint 7, an articulated link 25, a connecting hinge 9 and a connecting block 15. One end of the articulated link 25 is connected to the ball-type universal joint 7, and the other end of the articulated link 25 is hinged to the connecting block 15 through the connecting hinge 9. One end of the connecting device is rotatably connected to the wedge-shaped limit locking structure through the ball-type universal joint 7, and the other end of the connecting device is fixedly connected to the upper seat plate 18 through the connecting block 15.

[0063] A connecting device is provided between the wedge-shaped limit locking structure and the upper seat plate 18. This device not only connects the wedge-shaped limit locking structure to the upper seat plate 18, but also transmits the support's rotation and horizontal displacement. The ball joint 7 transmits the support's horizontal force and rotation, while the connecting hinge 9 cooperates with the ball joint 7 to transmit the support's vertical rotation.

[0064] More specifically, Figure 1 As shown, the connecting block 15 is fixedly connected to the upper seat plate 18 via the first connecting member 11 .

[0065] More specifically, Figure 8 As shown, one end of the ball-type universal joint 7 is rotatably connected to the wedge link 51 , and the other end of the ball-type universal joint 7 is fixedly connected to the articulated link 25 .

[0066] Specifically, the limit adjustment device further includes a limit device 8, and the limit device 8 is arranged on the connecting device. Figure 2 As shown, the limiting device 8 is installed on the pier 1. The setting of the limiting device 8 can prevent the connecting hinge 9 and the ball joint 7 from over-rotating, effectively improving the safety and reliability of the bearing force.

[0067] Specifically, the limiting device 8 is provided on the articulated link 25 , and the limiting device 8 is provided between the ball joint 7 and the connecting hinge 9 .

[0068] The limiting device 8 can constrain the movement of the support in the non-main displacement direction. In this embodiment, the limiting device 8 can constrain the movement of the support in the transverse bridge direction.

[0069] Specifically, such as Figure 4 and Figure 5 As shown, a limiting hole 81 is provided on the limiting device 8 , the limiting device 8 is sleeved on the hinge connecting rod 25 through the limiting hole 81 , and a third slide plate 82 is provided in the limiting hole 81 .

[0070] The third slide plate 82 can reduce the friction between the limiting hole 81 and the hinge link 25. When the support rotates vertically, the limiting hole 81 of the limiting device 8 can prevent the connecting hinge 9 and the ball joint 7 from over-rotating and facilitate the installation of the ball joint 7 and the connecting hinge 9.

[0071] Specifically, such as Figure 2 As shown, one side of the spherical crown middle seat plate 21 is slidably connected to the upper seat plate 18 , and the side of the spherical crown middle seat plate 21 away from the upper seat plate 18 is slidably connected to the lower seat plate 22 .

[0072] Specifically, such as Figure 2 As shown, the spherical crown middle seat plate 21 is set as a plane on the side close to the upper seat plate 18, the spherical crown middle seat plate 21 is set as a spherical convex surface on the side away from the upper seat plate 18, and the lower seat plate 22 is set as a spherical concave surface on the side close to the spherical crown middle seat plate 21, and the spherical convex surface is matched with the spherical concave surface.

[0073] More specifically, Figure 2 As shown, a first non-metallic slide plate 20 is provided between the spherical crown middle seat plate 21 and the upper seat plate 18 , and a second non-metallic slide plate 23 is provided between the spherical crown middle seat plate 21 and the lower seat plate 22 .

[0074] This arrangement can reduce the friction between the middle seat plate 21 of the spherical crown and the upper seat plate 18 and the lower seat plate 22 .

[0075] Specifically, such as Figure 2 As shown, a sealing device 19 is provided on the side of the seat plate 21 in the spherical crown, and the sealing device 19 is used to prevent sand and dust from entering the first non-metallic slide 20 and the second non-metallic slide 23 to damage their structure, thereby improving the service life of the first non-metallic slide 20 and the second non-metallic slide 23.

[0076] More specifically, the sealing device 19 is not limited.

[0077] In this embodiment, the sealing device 19 is configured as a sealing ring.

[0078] Specifically, such as Figure 1 As shown, a dust cover plate 13 is installed above the wedge-shaped installation groove 10.

[0079] More specifically, Figure 1 As shown, the dust cover 13 is fixed to the wedge-shaped mounting groove 10 through a second connecting member 14 to prevent dust from entering the wedge-shaped mounting groove 10 .

[0080] More specifically, the second connecting member 14 is configured as a bolt.

[0081] This embodiment proposes a support with a motion locking structure. Compared with the prior art, the support with a motion locking structure described in this embodiment has the following beneficial effects:

[0082] 1) The support with a motion locking structure described in this embodiment adopts a wedge-shaped limit locking structure instead of the traditional cantilever limit plate, so that the support can withstand a larger horizontal force, thereby making the support have an anti-falling beam function, and at the same time can realize the rotation and horizontal movement of the support.

[0083] 2) In the support with a motion locking structure described in this embodiment, the support displacement adjustment device can adjust the horizontal limit displacement of the support.

[0084] 3) The support with a motion locking structure described in this embodiment has a limit device that can, on the one hand, constrain the movement of the support in the non-main displacement direction; on the other hand, it can prevent the connecting hinge and the ball joint from over-rotating, effectively improving the safety and reliability of the support's force.

[0085] 4) The support with a motion locking structure described in the present invention has a limit adjustment device that can be set along the longitudinal bridge direction and / or the transverse bridge direction, which is independent of the structure of the upper seat plate, the spherical crown middle seat plate and the lower seat plate of the support body, and can reduce the difficulty of installing and manufacturing the support.

[0086] Example 2

[0087] In this embodiment, different from the embodiment 1, the limit adjustment device is provided on both sides of the spherical crown middle seat plate 21 along the transverse bridge direction, and the wedge block 5 is movably connected to the wedge-shaped limiter 2.

[0088] Example 3

[0089] In this embodiment, different from Example 1, the limit adjustment device is arranged on both sides of the seat plate 21 in the spherical crown along the longitudinal bridge direction and the transverse bridge direction, the wedge block 5 is movably connected to the wedge-shaped limit body 2, the support displacement gap 3 is zero, and the support with the motion locking structure is now a fixed support.

[0090] Example 4

[0091] This embodiment provides a bridge, which includes a pier 1 and a beam. A support with a motion locking structure as described in any one of Embodiments 1, 2, or 3 is installed between the pier 1 and the beam.

[0092] The bridge includes not only the pier 1, the beam body and the support with a motion locking structure but also other related components. Since the specific structures and specific assembly relationships of the related components are all existing technologies, they will not be described in detail here.

[0093] The advantages of the bridge described are the same as those of the support with a motion locking structure described above over the prior art, which will not be described in detail here.

[0094] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A support with a motion locking structure, characterized in that: The support comprises an upper seat plate (18), a lower seat plate (22), a spherical crown middle seat plate (21) and a limit adjustment device, wherein the spherical crown middle seat plate (21) is arranged between the upper seat plate (18) and the lower seat plate (22), and the limit adjustment device is installed on the upper seat plate (18), and is arranged on both sides of the spherical crown middle seat plate (21) along the longitudinal bridge direction and / or the transverse bridge direction; the limit adjustment device comprises a wedge-shaped limit locking structure, and the wedge-shaped limit locking structure comprises a wedge-shaped limit body (2) and a wedge block (5), wherein the wedge-shaped limit body (2) is fixed on the pier (1), one end of the wedge block (5) is fixedly connected to the upper seat plate (18), and the other end of the wedge block (5) is connected to the wedge-shaped limit body (2), and the other end of the wedge block (5) is limited inside the wedge-shaped limit body (2); Along the longitudinal bridge direction or the transverse bridge direction, the limit adjustment device is arranged on both sides of the spherical crown middle seat plate (21), and the wedge block (5) is movably connected to the wedge-shaped limit body (2); A wedge-shaped mounting groove (10) is provided in the wedge-shaped limiting body (2), the wedge block (5) is provided in the wedge-shaped mounting groove (10), a notch (101) is provided in the wedge-shaped mounting groove (10) on a side close to the upper seat plate (18), the width of the notch (101) is b1, the width of the wedge block (5) on a side close to the notch (101) is b2, b2>b1, a wedge block connecting rod (51) is provided on a side of the wedge block (5) close to the upper seat plate (18), and the wedge block connecting rod (51) passes through the notch (101) and is connected to the upper seat plate (18); A connecting device is installed between the wedge-shaped limit locking structure and the upper seat plate (18), the connecting device comprising a ball-type universal joint (7), an articulated link (25), a connecting hinge (9) and a connecting block (15), one end of the articulated link (25) is connected to the ball-type universal joint (7), the other end of the articulated link (25) is hinged to the connecting block (15) through the connecting hinge (9), one end of the connecting device is rotatably connected to the wedge-shaped limit locking structure through the ball-type universal joint (7), and the other end of the connecting device is fixedly connected to the upper seat plate (18) through the connecting block (15); The limit adjustment device further comprises a limit device (8), wherein the limit device (8) is arranged on the connecting device; The limiting device (8) is arranged on the hinge connecting rod (25); The limiting device (8) is arranged between the ball-type universal joint (7) and the connecting hinge (9); The limiting device (8) can constrain the upward movement of the support on the transverse bridge.

2. The support with a motion locking structure according to claim 1, characterized in that: The wedge-shaped limiting locking structure further comprises a support displacement adjustment device, which is used to adjust the horizontal limit displacement of the support.

3. The support with a motion locking structure according to claim 2, characterized in that: A support displacement gap (3) is formed between the wedge-shaped mounting groove (10) and the side of the wedge-shaped block (5) away from the upper seat plate (18), and the support displacement adjustment device is arranged in the support displacement gap (3).

4. The support with a motion locking structure according to claim 2, characterized in that: The support displacement adjustment device comprises a gap adjustment steel plate (17) and a gap adjustment block (16); the gap adjustment steel plate (17) is arranged between the wedge-shaped limiting body (2) and the gap adjustment block (16); and a gap adjustment connector (12) mounts the gap adjustment block (16) and the gap adjustment steel plate (17) on the wedge-shaped limiting body (2).

5. The support with a motion locking structure according to claim 3, characterized in that: A first wedge surface friction pair (24) and a second wedge surface friction pair (4) are provided between the side surface of the wedge-shaped mounting groove (10) and the side surface of the wedge block (5), and a third wedge surface friction pair (6) is provided between the bottom surface of the wedge-shaped mounting groove (10) and the bottom surface of the wedge block (5).

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