A composite variable-position comb-shaped telescopic device

Abstract

Embodiments of the present disclosure relate to the technical field of bridge expansion joints. An embodiment of the present disclosure provides a composite displacement comb-type expansion device, which includes a first tooth plate and a second tooth plate. The first tooth plate and the second tooth plate are respectively arranged on a first beam body and a second beam body. The first tooth plate has a first tooth row, and the second tooth plate has a second tooth row. Both sides of a third tooth plate respectively have a third tooth row and a fourth tooth row. The third tooth row is arranged in a staggered manner with the first tooth row, and the fourth tooth row is arranged in a staggered manner with the second tooth row. A lateral position adjusting member is used to be arranged on the first beam body and the second beam body, and the third tooth plate is arranged on the lateral position adjusting member. A vertical support member is arranged on the first tooth plate and the second tooth plate, and the third tooth plate is also arranged on the vertical support member. Through the above technical solution, the technical problem that when there is a large gap between two adjacent beam ends in the prior art, the expansion device cannot well ensure the stability of filling the gap is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of bridge expansion joints. Specifically, it relates to a composite displacement comb-type expansion device. Background Art

[0002] During the service life of a bridge structure, it will inevitably be affected by various complex factors such as temperature changes, load effects, foundation displacements, concrete shrinkage and creep. These factors will cause the bridge to undergo expansion and contraction deformations, beam-end rotations, and joint changes caused by changes in the beam deflection. In order to ensure that the bridge can still achieve free deformation strictly in accordance with the design requirements under the above complex working conditions, and at the same time create a smooth and unobstructed traffic condition for vehicles, it is necessary to reserve expansion joints between adjacent two beam ends, between the beam end and the abutment, or at the hinge position of the bridge, and install expansion devices on the bridge deck.

[0003] As an indispensable key component in the bridge structure, the expansion device shoulders multiple important missions. First, it can accurately ensure the free deformation of the bridge deck under various working conditions, while playing a role in stabilizing and strengthening the beam end and effectively filling the gap; second, it can help vehicles pass through the bridge deck smoothly without any obstacles, perfectly meeting the deformation requirements of the bridge deck. Specifically, the device has excellent adaptability to the longitudinal expansion and contraction of the bridge caused by factors such as temperature changes and vehicle braking forces, has a strong bearing capacity, can firmly bear the vehicle load on the upper part of the bridge, and provides a smooth and comfortable driving experience; third, it has good waterproof and drainage performance, can completely prevent rainwater from invading the beam body or under the bridge from the gap, and effectively protects the bridge structure; fourth, its connection with the bridge is stable and reliable, showing good integrity, having high stiffness and super durability, and can serve stably for a long time; finally, its structural design is simple and reasonable, the construction operation is convenient, the later maintenance is easy, and it has replaceability, which provides great convenience for the maintenance and management of the bridge throughout its life cycle. Although the expansion devices in the prior art have many advantages, there are still some problems. For example, when there is a large gap between adjacent two beam ends, the expansion device cannot well ensure the stability of filling the gap, and when the longitudinal displacement difference between adjacent two beam ends is large, there is also a problem of a large drop in the expansion device. Summary of the Invention

[0004] To overcome the above defects, embodiments of the present disclosure provide a composite displacement comb-type expansion device, which solves the technical problem that when there is a large gap between adjacent two beam ends in the prior art, the expansion device cannot well ensure the stability of filling the gap.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a composite displacement comb-type expansion device for installation between an adjacent first beam body and a second beam body, with a gap between the first beam body and the second beam body, including:

[0006] A first toothed plate and a second toothed plate, the first toothed plate and the second toothed plate are respectively arranged on the first beam body and the second beam body, the first toothed plate has a first tooth row, and the second toothed plate has a second tooth row;

[0007] A third toothed plate, both sides of the third toothed plate respectively have a third tooth row and a fourth tooth row, the third tooth row is arranged in a staggered manner with the first tooth row, and the fourth tooth row is arranged in a staggered manner with the second tooth row;

[0008] A lateral position adjusting member, the lateral position adjusting member is used to be arranged on the first beam body and the second beam body, and the third toothed plate is arranged on the lateral position adjusting member;

[0009] A vertical support member, the vertical support member is arranged on the first toothed plate and the second toothed plate, and the third toothed plate is also arranged on the vertical support member.

[0010] For example, a composite displacement comb-type expansion device provided by at least one embodiment of the present disclosure, the lateral position adjusting member includes:

[0011] A scissor support member, the scissor support member includes a first hinge shaft, a second hinge shaft and a third hinge shaft, and the first hinge shaft, the second hinge shaft and the third hinge shaft are respectively used to be indirectly connected to the first toothed plate, the third toothed plate and the second toothed plate.

[0012] For example, a composite displacement comb-type expansion device provided by at least one embodiment of the present disclosure, the scissor support member further includes:

[0013] A first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are hinged through the first hinge shaft;

[0014] A third connecting rod and a fourth connecting rod, the third connecting rod and the fourth connecting rod are hinged through the third hinge shaft;

[0015] A fifth connecting rod and a sixth connecting rod, the fifth connecting rod and the sixth connecting rod are hinged through the second hinge shaft, and one end of the fifth connecting rod is hinged to the first connecting rod and the other end is hinged to the third connecting rod, and one end of the sixth connecting rod is hinged to the second connecting rod and the other end is hinged to the fourth connecting rod.

[0016] For example, a composite displacement comb-type expansion device provided by at least one embodiment of the present disclosure, the vertical support member includes:

[0017] A first sliding groove member and a second sliding groove member, the first sliding groove member and the second sliding groove member are respectively used to be indirectly connected to the first beam body and the second beam body, and the length direction of the first sliding groove member and the second sliding groove member is perpendicular to the length direction of the gap;

[0018] A slide rail member, the third toothed plate is disposed on the slide rail member, and two ends of the slide rail member are respectively slidably disposed in the first chute member and the second chute member.

[0019] For example, in a composite displacement comb-type telescopic device provided by at least one embodiment of the present disclosure, an upper end of the first hinge shaft has a first ball hinge head, an upper end of the second hinge shaft has a second ball hinge head, and an upper end of the third hinge shaft has a third ball hinge head. The composite displacement comb-type telescopic device further includes:

[0020] A first ball hinge seat, the first ball hinge seat is disposed on the first toothed plate, and the first ball hinge head is ball-hinged to the first ball hinge seat;

[0021] A second ball hinge seat, the second ball hinge seat is disposed on the third toothed plate, and the second ball hinge head is ball-hinged to the second ball hinge seat;

[0022] A third ball hinge seat, the third ball hinge seat is disposed on the second toothed plate, and the third ball hinge head is ball-hinged to the third ball hinge seat.

[0023] For example, in a composite displacement comb-type telescopic device provided by at least one embodiment of the present disclosure, a lower end of the first chute member and the second chute member respectively have a fourth ball hinge head and a fifth ball hinge head. The composite displacement comb-type telescopic device further includes:

[0024] A fourth ball hinge seat, the fourth ball hinge seat is disposed on the first beam body, and the fourth ball hinge head is ball-hinged to the fourth ball hinge seat;

[0025] A fifth ball hinge seat, the fifth ball hinge seat is disposed on the second beam body, and the fifth ball hinge head is ball-hinged to the fifth ball hinge seat.

[0026] For example, in a composite displacement comb-type telescopic device provided by at least one embodiment of the present disclosure, the third toothed plate includes:

[0027] A first main body and a second main body, the first main body is movably disposed relative to the second main body, and the third tooth row and the fourth tooth row are respectively formed on the first main body and the second main body.

[0028] For example, a composite displacement comb-shaped expansion device provided by at least one embodiment of the present disclosure, wherein the first main body is slidably arranged relative to the second main body, and both the third tooth row and the fourth tooth row have limiting tops, and the limiting tops are used for abutting against the first tooth plate and the second tooth plate to limit the gap between the third tooth row and the first tooth row to be greater than 0, and limit the gap between the fourth tooth row and the second tooth row to be greater than 0; further comprising a first elastic member, one end of the first elastic member acts on the first main body, and the other end acts on the second main body to provide a force for the first main body and the second main body to move away from each other.

[0029] For example, a composite displacement comb-shaped expansion device provided by at least one embodiment of the present disclosure, wherein the first main body is swingably arranged relative to the second main body, and the swing axis is parallel to the length direction of the gap.

[0030] For example, a composite displacement comb-shaped expansion device provided by at least one embodiment of the present disclosure, wherein both the first tooth row and the second tooth row have limiting blocking parts, and the limiting blocking parts are used for limiting the swinging positions of the first main body and the second main body, and further comprising:

[0031] A second elastic member, one end of the second elastic member acts on the first main body, and the other end acts on the second main body to provide a force for the first main body and the second main body to swing downward.

[0032] The beneficial effects of the embodiments of the present disclosure are as follows:

[0033] In the present disclosure, the performance and stability of the expansion device in dealing with complex beam end displacements are significantly improved. By using the lateral position adjusting member and the vertical support member, combined with the staggeredly arranged tooth plates and tooth rows, effective adaptation to the beam end displacement and stable support are achieved. The structure of the expansion device is improved to better meet the deformation requirements of the bridge under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the exemplary embodiments of the present disclosure and these drawings.

[0035] Figure 1 It is a schematic structural diagram of a composite displacement comb-shaped expansion device in an embodiment of the present disclosure;

[0036] Figure 2 is Figure 1 the sectional structural diagram taken along A-A in

[0037] Figure 3 is Figure 1 the schematic diagram of the sectional view taken along line B-B in

[0038] Figure 4 is Figure 1 the schematic diagram of the sectional view taken along line C-C in

[0039] Figure 5 the schematic diagram of the first ball joint head, the second ball joint head and the third ball joint head in another embodiment of the present disclosure;

[0040] Figure 6 is Figure 5 the schematic diagram of the fourth ball joint head and the fifth ball joint head in the embodiment of

[0041] Figure 7 the schematic diagram of the third toothed plate in still another embodiment of the present disclosure;

[0042] Figure 8 is Figure 7 the schematic diagram of the internal structure of the third toothed plate in the embodiment of

[0043] Figure 9 the schematic diagram of the third toothed plate in still another embodiment of the present disclosure;

[0044] Figure 10 is Figure 9 the schematic diagram of another perspective structure of the third toothed plate in the embodiment of

[0045] In the figure: the first beam body - 1, the second beam body - 2, the gap - 3, the first toothed plate - 4, the first tooth row - 401, the limiting stop - 402, the second toothed plate - 5, the second tooth row - 501, the third toothed plate - 6, the third tooth row - 601, the fourth tooth row - 602, the first main body - 603, the second main body - 604, the limiting top - 605, the lateral position adjusting member - 7, the scissor support member - 701, the first hinge shaft - 702, the second hinge shaft - 703, the third hinge shaft - 704, the first connecting rod - 705, the second connecting rod - 706, the third connecting rod - 707, the fourth connecting rod - 708, the fifth connecting rod - 709, the sixth connecting rod - 710, the first ball joint head - 711, the second ball joint head - 712, the third ball joint head - 713, the vertical support member - 8, the first chute member - 801, the second chute member - 802, the slide rail member - 803, the fourth ball joint head - 804, the fifth ball joint head - 805, the first ball joint seat - 9, the second ball joint seat - 10, the third ball joint seat - 11, the fourth ball joint seat - 12, the fifth ball joint seat - 13, the first elastic member - 14, the second elastic member - 15. Detailed implementation manners

[0046] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present disclosure, rather than limiting the present disclosure.

[0047] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and understanding of the drawings, in some figures, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0048] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0049] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0050] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present disclosure.

[0051] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0052] As Figures 1 to 4 shown, it shows a composite displacement comb-shaped telescopic device in an embodiment of the present disclosure, which is used to be installed between an adjacent first beam body 1 and a second beam body 2, and there is a gap 3 between the two.

[0053] The first toothed plate 4 is installed on the first beam body 1 and has a first tooth row 401; the second toothed plate 5 is installed on the second beam body 2 and has a second tooth row 501. The third tooth rows 601 on both sides of the third toothed plate 6 are staggered with the first tooth row 401, and the fourth tooth row 602 is staggered with the second tooth row 501. After adding the third toothed plate 6, the length of the expansion device can be increased to a great extent. Compared with the prior art design with only the first toothed plate 4 and the second toothed plate 5, when there is a large gap between adjacent beam ends, the expansion device can also ensure the stability of filling the gap well.

[0054] In practical applications, for example, when the bridge is affected by factors such as temperature changes and vehicle loads: The lateral position adjusting member 7 is arranged on the first beam body 1 and the second beam body 2, and can be adjusted according to the lateral displacement between the beam bodies to ensure the stability and adaptability of the third toothed plate 6 in the lateral position, so as to ensure that when there is a large gap between adjacent beam ends, the gap can still be effectively filled.

[0055] The vertical support member 8 is arranged on the first toothed plate 4 and the second toothed plate 5 to provide vertical support for the third toothed plate 6. When the longitudinal displacement difference between adjacent beam ends is large, the vertical support member 8 can effectively reduce the drop of the expansion device, making the device more smoothly adapt to the displacement of the beam body.

[0056] The advantages of this design are as follows: First, through the staggered tooth rows and the lateral position adjusting member 7, the adaptability to the lateral displacement of the beam end and the stability of gap filling are improved. Second, the setting of the vertical support member 8 reduces the drop problem caused by the longitudinal displacement difference, enhancing the overall stability and reliability of the device.

[0057] For example, in seasons with large temperature differences or in heavy traffic conditions, this expansion device can work stably to ensure the normal use of the bridge and the safety and comfort of driving.

[0058] In terms of technical effects, the performance and stability of the expansion device in dealing with complex beam end displacements are significantly improved. Overall working principle: Utilize the lateral position adjusting member 7 and the vertical support member 8, combined with the staggered toothed plate tooth rows, to achieve effective adaptation to and stable support for the beam end displacements. Overall technical effect: Improve the structure of the expansion device to better meet the deformation requirements of the bridge under various working conditions.

[0059] In some examples, the lateral position adjuster 7 includes a scissor support 701. The scissor support 701 consists of a first hinge shaft 702, a second hinge shaft 703, and a third hinge shaft 704. In actual operation, for example, when the bridge is subjected to a lateral force causing the beam to undergo a lateral displacement: The first hinge shaft 702 is indirectly connected to the first toothed plate 4, the second hinge shaft 703 is indirectly connected to the third toothed plate 6, and the third hinge shaft 704 is indirectly connected to the second toothed plate 5. When a lateral relative displacement occurs between the first beam 1 and the second beam 2, the scissor support 701 can perform corresponding telescoping and deformation through its unique hinge structure.

[0060] The advantages of this design are as follows: First, the structure of the scissor support 701 is flexible and can effectively adapt to different degrees of lateral displacement. Second, through the connection of multiple hinge shafts, the stability and reliability of the connection are ensured, and at the same time, relative rotation between components is allowed, thereby achieving precise adjustment of the lateral position.

[0061] For example, in the case of strong winds or vehicle eccentric loads, etc., the scissor support 701 can quickly respond to the lateral movement of the beam, maintaining the overall stability and functional integrity of the expansion device.

[0062] In terms of technical effects, the adjustment ability and response speed of the expansion device to lateral displacement are significantly improved. The overall working principle: By means of the hinge structure of the scissor support 701 and the connection between each hinge shaft and the toothed plate, effective adaptation and adjustment of lateral displacement are achieved. The overall technical effect: The structure of the lateral position adjuster 7 is optimized, enhancing the performance of the expansion device in terms of lateral displacement.

[0063] In some examples, the specific structure of the scissor support 701 is as follows: The first link 705 and the second link 706 are hinged through the first hinge shaft 702, the third link 707 and the fourth link 708 are hinged through the third hinge shaft 704, and the fifth link 709 and the sixth link 710 are hinged through the second hinge shaft 703.

[0064] In actual application scenarios, for example, when the bridge is subjected to complex external forces: When the first beam 1 and the second beam 2 undergo relative lateral movement, the first link 705 and the second link 706 rotate around the first hinge shaft 702, and the third link 707 and the fourth link 708 rotate around the third hinge shaft 704. At the same time, one end of the fifth link 709 where it is hinged to the first link 705 and the other end where it is hinged to the third link 707, as well as one end of the sixth link 710 where it is hinged to the second link 706 and the other end where it is hinged to the fourth link 708, also undergo corresponding rotation and displacement.

[0065] The advantages of this design are as follows: First, through the articulated combination of multiple connecting rods, a stable and flexible structure is formed, which can effectively withstand and transmit lateral forces and adaptively adjust according to the displacement of the beam body. Second, the coordinated movement between the connecting rods enables the scissor support 701 to evenly share the load during operation, improving its load-bearing capacity and durability.

[0066] For example, when the bridge is frequently subjected to lateral displacements caused by vehicle loads and temperature changes, this complex articulated structure of connecting rods can ensure the long-term stable operation of the scissor support 701 and guarantee that the performance of the expansion device is not affected.

[0067] In terms of technical effects, the structural stability of the scissor support 701 and its adaptability to lateral displacements are significantly enhanced. Overall working principle: Utilize the articulated relationship of multiple connecting rods to achieve the flexible deformation and stable support of the scissor support 701 under lateral displacements. Overall technical effect: Further optimize the structure of the scissor support 701 and improve the reliability and adaptability of the expansion device in terms of lateral displacement.

[0068] In some examples, the vertical support 8 includes a first chute member 801, a second chute member 802, and a slide rail member 803. In actual use, for example, when the bridge deforms: The first chute member 801 is indirectly connected to the first beam body 1, the second chute member 802 is indirectly connected to the second beam body 2, and the length directions of the first chute member 801 and the second chute member 802 are perpendicular to the length direction of the vertical gap 3. The third toothed plate 6 is provided on the slide rail member 803, and its two ends are respectively slidably disposed in the first chute member 801 and the second chute member 802.

[0069] When the first beam body 1 and the second beam body 2 generate displacements, the slide rail member 803 will slide correspondingly in the first chute member 801 and the second chute member 802 to adapt to the displacement of the beam body. Among them, the lateral position adjusting member 7 can expand and contract, and can adjust the third toothed plate 6 to always be in the central position between the first toothed plate 4 and the second toothed plate 5, and the lateral position adjusting member 7 cannot provide sufficient vertical support force for the third toothed plate 6, and the vertical support of the third toothed plate 6 is ensured by the vertical support 8.

[0070] The advantages of this design are as follows: First, through the cooperation of the chute and the slide rail, stable sliding guidance is provided to ensure the smooth progress of displacement. Second, it can effectively disperse and bear vertical loads, reduce local stress concentration caused by vertical deformation, and improve the overall durability of the device.

[0071] For example, when the bridge is subjected to impact forces such as the passage of heavy-duty vehicles or earthquakes, the vertical support 8 can quickly respond and adjust to ensure the normal operation of the expansion device and the safety of the bridge structure.

[0072] In terms of technical effects, the adaptability of the telescopic device to vertical displacement and its load-bearing performance have been significantly improved. Overall working principle: By utilizing the sliding fit between the first chute member 801, the second chute member 802 and the slide rail member 803, effective support and adaptation to displacement changes are achieved. Overall technical effect: The structure of the vertical support member 8 is optimized, enhancing the performance and reliability of the telescopic device in terms of vertical displacement changes.

[0073] As Figure 5 shown, in some examples, the upper end of the first hinge shaft 702 has a first ball joint head 711, the upper end of the second hinge shaft 703 has a second ball joint head 712, and the upper end of the third hinge shaft 704 has a third ball joint head 713. At the same time, a first ball joint seat 9, a second ball joint seat 10 and a third ball joint seat 11 are also included.

[0074] Under actual operating conditions, such as when the bridge is subjected to complex displacement actions in multiple directions: The first ball joint seat 9 is arranged on the first toothed plate 4, and the first ball joint head 711 is ball-joint connected to the first ball joint seat 9, enabling the first hinge shaft 702 to freely rotate and adjust the angle within a certain range to adapt to forces and displacements in different directions. The second ball joint seat 10 is arranged on the third toothed plate 6, and the second ball joint head 712 is ball-joint connected to the second ball joint seat 10, providing flexibility for multi-directional rotation of the second hinge shaft 703. The third ball joint seat 11 is arranged on the second toothed plate 5, and the third ball joint head 713 is ball-joint connected to the third ball joint seat 11, enabling the third hinge shaft 704 to adapt to various complex displacement situations.

[0075] The advantages of this design are as follows: First, the ball-joint connection increases the freedom of movement of the hinge shaft, enabling better response to multi-directional and multi-angle displacements generated by the bridge under different working conditions. Second, it improves the stability and adaptability of the connection between the entire scissor support member 701 and the toothed plate, reducing the risk of stress concentration and damage caused by connection limitations. Third, it can adjust the third toothed plate 6 to always be in the central position between the first toothed plate 4 and the second toothed plate 5.

[0076] For example, when the bridge undergoes uneven settlement or sudden strong impacts, the ball-joint connection can effectively disperse and transfer forces, ensuring the normal operation of the scissor support member 701 and the stability of the telescopic device.

[0077] In terms of technical effects, the flexibility and adaptability of the connection between the scissor support member 701 and the toothed plate have been significantly enhanced, improving the overall performance and reliability of the telescopic device. Overall working principle: Through the cooperation between the ball joint head and the ball joint seat, multi-directional rotation of the hinge shaft is achieved, enabling the scissor support member 701 to better adapt to the complex displacements of the bridge. Overall technical effect: The connection structure between the scissor support member 701 and the toothed plate is optimized, enhancing the working performance and stability of the telescopic device under complex working conditions.

[0078] AsFigure 6 As shown, in some examples, the lower ends of the first chute member 801 and the second chute member 802 respectively have a fourth ball hinge head 804 and a fifth ball hinge head 805.

[0079] In an actual application scenario, for example, when the bridge undergoes uneven deformation during use: The fourth ball hinge seat 12 is arranged on the first beam body 1, and the fourth ball hinge head 804 at the lower end of the first chute member 801 is ball-hinged to the fourth ball hinge seat 12, enabling the first chute member 801 to rotate freely and adjust the angle to a certain extent to adapt to various displacement conditions of the first beam body 1.

[0080] The fifth ball hinge seat 13 is arranged on the second beam body 2, and the fifth ball hinge head 805 at the lower end of the second chute member 802 is ball-hinged to the fifth ball hinge seat 13, providing the second chute member 802 with flexible rotation and angle adjustment capabilities to cope with different displacements of the second beam body 2.

[0081] The advantages of this design are as follows: First, the ball hinge connection increases the freedom of connection between the chute member and the beam body, enabling better adaptation to the complex displacements of the beam body and reducing stress concentration and damage caused by connection restrictions. Second, it improves the overall adaptability and stability of the vertical support member 8, ensuring that the vertical support member 8 can effectively play the roles of support and guidance when the bridge undergoes various deformations.

[0082] For example, when the bridge is subjected to strong vibrations and displacements caused by special situations such as earthquakes, the ball hinge connection enables the first chute member 801 and the second chute member 802 to better follow the movement of the beam body, ensuring the normal operation of the expansion device and the safety of the bridge structure.

[0083] In terms of technical effects, the flexibility and adaptability of the connection between the vertical support member 8 and the beam body are significantly enhanced, and the reliability and stability of the expansion device under complex working conditions are improved. Overall working principle: Through the cooperation of the ball hinge head and the ball hinge seat, the first chute member 801 and the second chute member 802 can flexibly adapt to the displacements of the beam body, thus ensuring the normal operation of the vertical support member 8. Overall technical effects: The connection structure between the vertical support member 8 and the beam body is optimized, and the performance of the expansion device in dealing with complex bridge displacements is improved, enabling stable responses to lateral displacement, longitudinal displacement, and vertical displacement, and always ensuring that the third tooth plate 6 is located in the middle position between the first tooth plate 4 and the second tooth plate 5.

[0084] As Figures 7 to 10 shown, in some examples, the third tooth plate 6 includes a first main body 603 and a second main body 604, and the first main body 603 is movably arranged relative to the second main body 604.

[0085] Under actual working conditions, such as when a bridge undergoes a large displacement: a third tooth row 601 is formed on the first main body 603, and a fourth tooth row 602 is formed on the second main body 604. When the displacement of the bridge causes a large change in the relative position between the first tooth plate 4 and the second tooth plate 5, the first main body 603 can be adjusted movably relative to the second main body 604.

[0086] The advantages of this design are as follows: First, it increases the adaptability of the third tooth plate 6 to complex displacements, enabling it to better cooperate with the first tooth plate 4 and the second tooth plate 5, and maintaining the sealing and stability performance of the expansion device. Second, by means of movable setting, the stress is dispersed, reducing the risk of damage to the third tooth plate 6 due to excessive deformation.

[0087] For example, when the bridge is subjected to extreme temperature changes or sudden large loads, this structure of the third tooth plate 6 can effectively adapt to the deformation, ensure the normal operation of the expansion device, and extend its service life.

[0088] In terms of technical effects, the displacement adaptability and durability of the third tooth plate 6 are significantly improved. Overall working principle: Utilize the relative movement of the first main body 603 and the second main body 604 to enable the third tooth plate 6 to better cope with the displacement of the bridge. Overall technical effect: Optimize the structure of the third tooth plate 6, and enhance the reliability and service life of the expansion device under complex working conditions.

[0089] Such as Figures 7 to 8 As shown, in some examples, the first main body 603 is slidably arranged relative to the second main body 604. Both the third tooth row 601 and the fourth tooth row 602 have a limiting top 605, and the limiting top 605 is used to abut against the first tooth plate 4 and the second tooth plate 5, restricting the gap between the third tooth row 601 and the first tooth row 401 to be greater than 0, and restricting the gap between the fourth tooth row 602 and the second tooth row 501 to be greater than 0; further includes a first elastic member 14, one end of the first elastic member 14 acts on the first main body 603, and the other end acts on the second main body 604, providing a force for the first main body 603 and the second main body 604 to move away from each other.

[0090] During the actual operation process, such as when the bridge undergoes a large expansion and contraction deformation: the first main body 603 slides relative to the second main body 604 to adapt to the change in the position between the first tooth plate 4 and the second tooth plate 5. The limiting top 605 abuts against the first tooth plate 4 and the second tooth plate 5, which can restrict the gap between the third tooth row 601 and the first tooth row 401 and the gap between the fourth tooth row 602 and the second tooth row 501 to be greater than 0, thereby ensuring that no excessive gap appears and guaranteeing the performance of the expansion device.

[0091] One end of the first elastic member 14 acts on the first main body 603, and the other end acts on the second main body 604, providing a force for the first main body 603 and the second main body 604 to move away from each other. This enables the first main body 603 and the second main body 604 to maintain a certain tension in the normal state, better rebound when compressed, and provide a certain buffering effect during the telescopic process.

[0092] The advantages of this design are as follows: First, through the sliding setting and the limiting top 605, the gap between the tooth rows is effectively controlled, ensuring the reliability of the device. Second, the setting of the first elastic member 14 enhances the adaptive ability and buffering performance of the device, can reduce the impact of bridge displacement on the expansion joint, and extend its service life.

[0093] For example, when the bridge frequently undergoes large telescopic deformations, this structure can always maintain a good buffering effect, ensuring the smoothness and safety of vehicle driving.

[0094] In terms of technical effects, the adaptive ability and buffering effect of the expansion joint are significantly improved. Overall working principle: Through the coordinated action of sliding, limiting, and elastic members, the third tooth plate 6 can flexibly adapt to displacement, while ensuring stable spacing and buffering effect. Overall technical effect: Further optimize the structure and performance of the third tooth plate 6, improving the overall reliability and stability of the expansion joint.

[0095] Such as Figures 9 to 10 As shown, in some examples, the first main body 603 is swingably arranged relative to the second main body 604, and the swing axis is parallel to the length direction of the gap 3.

[0096] In actual use, for example, when the bridge undergoes complex deformations such as uneven settlement or lateral torsion: Since the first main body 603 can swing relative to the second main body 604, and the swing axis is parallel to the length direction of the gap 3, this enables the third tooth plate 6 to better adapt to this complex deformation situation. When one end of the bridge settles more or is subjected to lateral torsion, the first main body 603 can swing relative to the second main body 604 accordingly, so as to maintain good cooperation with the first tooth plate 4 and the second tooth plate 5, reducing stress concentration and damage caused by deformation.

[0097] The advantages of this design are as follows: First, it increases the ability of the third tooth plate 6 to cope with deformations in different directions and forms, improving the overall adaptability of the expansion joint. Second, the swingable arrangement can more flexibly adjust the position and angle of the tooth plate, ensuring the sealing performance and structural stability under various complex working conditions.

[0098] For example, in areas with complex geological conditions or where the bridge is subjected to special external forces, this swingable third tooth plate 6 can effectively cope with various unexpected situations, ensuring the normal operation of the expansion joint and the safe use of the bridge.

[0099] In terms of technical effects, the deformation adaptability and structural stability of the third tooth plate 6 are significantly enhanced. Overall working principle: By utilizing the swinging of the first main body 603 relative to the second main body 604, the third tooth plate 6 can be adaptively adjusted according to the deformation of the bridge. Overall technical effect: The structure of the third tooth plate 6 is optimized, and the working performance and reliability of the expansion device under complex bridge deformations are improved.

[0100] In some examples, both the first tooth row 401 and the second tooth row 501 have limiting stop portions 402. The limiting stop portions 402 are used to limit the swinging positions of the first main body 603 and the second main body 604. It also includes a second elastic member 15. One end of the second elastic member 15 acts on the first main body 603, and the other end acts on the second main body 604, providing a force for the first main body 603 and the second main body 604 to swing downward.

[0101] In an actual working scenario, for example, when the bridge undergoes large longitudinal or lateral displacements: Since the first main body 603 is arranged to swing relative to the second main body 604, during the swinging process, the limiting stop portions 402 on the first tooth row 401 and the second tooth row 501 can limit the swinging positions of the first main body 603 and the second main body 604, preventing structural instability and failure caused by excessive swinging.

[0102] One end of the second elastic member 15 acts on the first main body 603, and the other end acts on the second main body 604, providing a force for the first main body 603 and the second main body 604 to swing downward. In this way, in the normal state, a certain pre-tightening force can be maintained, enhancing the structural stability and sealing performance; when subjected to large displacement forces, the elastic member can play a buffering and resetting role, enabling the first main body 603 and the second main body 604 to quickly return to a proper position after displacement.

[0103] The advantages of this design are as follows: First, the swinging range is precisely controlled by the limiting stop portions 402 to ensure the safety and stability of the structure. Second, the setting of the second elastic member 15 improves the adaptability and reset performance of the device, extending its service life.

[0104] For example, on bridges that are frequently affected by heavy-duty vehicles and harsh climates, this design can ensure that the expansion device maintains good performance during long-term use, reducing maintenance costs.

[0105] In terms of technical effects, the controllability and stability of the swing of the third tooth plate 6 are significantly improved, and the overall performance and reliability of the telescopic device are enhanced. Overall working principle: With the aid of the limit stop portion 402 and the second elastic member 15, the swing of the first main body 603 and the second main body 604 is effectively controlled to achieve the adaptation to the bridge deflection and the protection of the structure. Overall technical effect: The swing structure of the third tooth plate 6 is further optimized, the working performance and durability of the telescopic device under complex working conditions are improved, and the third tooth rows 601 and the fourth tooth rows 602 on both sides of the third tooth plate 6 can be better aligned with the second tooth row 501 and the first tooth row 401, avoiding the occurrence of the third tooth rows 601 and the fourth tooth rows 602 tilting or sinking relative to the second tooth row 501 and the first tooth row 401.

[0106] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A composite displacement comb-type telescopic device, used for being installed between adjacent first beams (1) and second beams (2), wherein there is a gap (3) between the first beams (1) and the second beams (2), characterized in that: include: A first tooth plate (4) and a second tooth plate (5), wherein the first tooth plate (4) and the second tooth plate (5) are respectively arranged on the first beam body (1) and the second beam body (2), the first tooth plate (4) having a first tooth row (401), and the second tooth plate (5) having a second tooth row (501); a third tooth plate (6), wherein two sides of the third tooth plate (6) are respectively provided with a third tooth row (601) and a fourth tooth row (602), the third tooth row (601) and the first tooth row (401) are arranged in an alternating manner, and the fourth tooth row (602) and the second tooth row (501) are arranged in an alternating manner; a transverse position adjusting member (7), the transverse position adjusting member (7) being used to be arranged on the first beam body (1) and the second beam body (2), and the third tooth plate (6) being arranged on the transverse position adjusting member (7); A vertical support member (8), wherein the vertical support member (8) is arranged on the first tooth plate (4) and the second tooth plate (5), and the third tooth plate (6) is also arranged on the vertical support member (8); The third tooth plate (6) comprises a first body (603) and a second body (604); the first body (603) is movably arranged relative to the second body (604); the third tooth row (601) and the fourth tooth row (602) are respectively formed on the first body (603) and the second body (604); The first body (603) is swingably arranged relative to the second body (604), and the swing axis is parallel to the length direction of the gap (3); the first tooth row (401) and the second tooth row (501) both have a limit stop (402), and the limit stop (402) is used to limit the swing position of the first body (603) and the second body (604); and the second elastic member (15) is further included, one end of the second elastic member (15) acts on the first body (603) and the other end of the second elastic member (15) acts on the second body (604) to provide a force for the first body (603) and the second body (604) to swing downward; or the first body (603) is swingably arranged relative to the second body (604), and the swing axis is parallel to the length direction of the gap (3); the first tooth row (401) and the second tooth row (501) both have a limit stop (402), and the limit stop (402) is used to limit the swing position of the first body (603) and the second body (604); The second body (604) is slidably arranged, and the third tooth row (601) and the fourth tooth row (602) both have a limiting top (605), and the limiting top (605) is used to abut against the first tooth plate (4) and the second tooth plate (5), so as to limit the gap between the third tooth row (601) and the first tooth row (401) to be greater than 0, and to limit the gap between the fourth tooth row (602) and the second tooth row (501) to be greater than 0. The device also includes a first elastic member (14), one end of which acts on the first body (603) and the other end of which acts on the second body (604), so as to provide a force for the first body (603) and the second body (604) to move away from each other.

2. A composite displacement comb-type telescopic device according to claim 1, characterized in that: The lateral position adjusting member (7) comprises: A scissor-type support member (701), the scissor-type support member (701) comprising a first hinge shaft (702), a second hinge shaft (703) and a third hinge shaft (704), the first hinge shaft (702), the second hinge shaft (703) and the third hinge shaft (704) being respectively used for being indirectly connected to the first tooth plate (4), the third tooth plate (6) and the second tooth plate (5).

3. A composite displacement comb-type telescopic device according to claim 2, characterized in that: The scissor-type support member (701) further comprises: A first connecting rod (705) and a second connecting rod (706), wherein the first connecting rod (705) and the second connecting rod (706) are hingedly connected via the first hinge shaft (702); A third connecting rod (707) and a fourth connecting rod (708), wherein the third connecting rod (707) and the fourth connecting rod (708) are hingedly connected via the third hinge shaft (704); A fifth link (709) and a sixth link (710), wherein the fifth link (709) and the sixth link (710) are hingedly connected via the second hinge shaft (703), and one end of the fifth link (709) is hingedly connected to the first link (705), and the other end is hingedly connected to the third link (707); and one end of the sixth link (710) is hingedly connected to the second link (706), and the other end is hingedly connected to the fourth link (708).

4. A composite displacement comb-type telescopic device according to claim 2, characterized in that: The vertical support member (8) comprises: A first slide groove member (801) and a second slide groove member (802), wherein the first slide groove member (801) and the second slide groove member (802) are respectively used to be indirectly connected to the first beam body (1) and the second beam body (2), and the length direction of the first slide groove member (801) and the second slide groove member (802) are perpendicular to the length direction of the gap (3); A slide rail member (803), wherein the third tooth plate (6) is arranged on the slide rail member (803), and two ends of the slide rail member (803) are respectively slidably arranged in the first slide groove member (801) and the second slide groove member (802).

5. A composite displacement comb-type telescopic device according to claim 4, characterized in that: The upper end of the first hinge shaft (702) has a first ball joint (711), the upper end of the second hinge shaft (703) has a second ball joint (712), and the upper end of the third hinge shaft (704) has a third ball joint (713), and further comprises: a first ball joint seat (9), the first ball joint seat (9) being arranged on the first tooth plate (4), the first ball joint head (711) being connected to the first ball joint seat (9) by a ball joint; a second ball joint seat (10), wherein the second ball joint seat (10) is arranged on the third tooth plate (6), and the second ball joint head (712) is connected to the second ball joint seat (10) in a ball joint; A third ball joint seat (11), wherein the third ball joint seat (11) is arranged on the second tooth plate (5), and the third ball joint head (713) is connected to the third ball joint seat (11) by means of a ball joint.

6. A composite displacement comb-type telescopic device according to claim 5, characterized in that: The lower ends of the first slide member (801) and the second slide member (802) are provided with a fourth ball joint (804) and a fifth ball joint (805) respectively, and further include: A fourth ball joint seat (12), the fourth ball joint seat (12) being arranged on the first beam body (1), the fourth ball joint head (804) being connected to the fourth ball joint seat (12) in a ball joint manner; A fifth ball joint seat (13), the fifth ball joint seat (13) being arranged on the second beam body (2), the fifth ball joint head (805) being connected to the fifth ball joint seat (13) by means of a ball joint.

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