A displacement component and multi-directional displacement dust-proof sliding plate expansion joint

Abstract

The present invention discloses a displacement assembly, including a displacement box, a crossbeam and an elastic pressing device. There are two displacement boxes, and a receiving groove is provided on the displacement box. The two ends of the crossbeam are placed in the receiving grooves corresponding to the displacement boxes, and the transverse end walls of the crossbeam and the transverse side walls of the corresponding receiving groove have transverse gaps, and the sum of the spacings of the two transverse gaps is greater than the deformation of the expansion joint. The two side walls of the crossbeam and the longitudinal side walls of the receiving groove have longitudinal gaps. The displacement box is equipped with an elastic pressing device for pressing the top surface of the crossbeam. A multi-directional displacement dustproof slide expansion joint is also disclosed. Through the displacement assembly, the rebound energy of the dustproof slide can be absorbed by the compression spring, thereby effectively reducing the rebound force of the dustproof slide, reducing the collision force between the dustproof slide and the supporting steel plate, so that the sound when the vehicle passes through the expansion joint is effectively reduced; through the crossbeam and the dustproof slide fixedly connected, the connecting bolts are mainly subjected to the transverse shear force, and the connecting bolts are not easy to loosen, reducing the maintenance cost.

Description

Technical Field

[0001] The invention relates to a bridge expansion joint, in particular to a displacement component and a multi-directional displacement dustproof slide plate expansion joint. Background Art

[0002] Bridge expansion joint: refers to the expansion joint usually set between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. The expansion joint is required to be able to freely expand and contract in both directions parallel and perpendicular to the bridge axis, be firm and reliable, and be smooth without sudden jumps and noise when vehicles pass by; it must be able to prevent rainwater and garbage and soil from infiltrating and clogging the expansion joint; the installation, inspection, maintenance, and removal of dirt from the expansion joint must be simple and convenient.

[0003] In the design process of bridge expansion joints, in order to ensure that the dustproof slide plate always covers the expansion joint, a telescopic assembly is usually set so that the middle of the dustproof slide plate is always aligned with the center line of the expansion joint, thereby preventing the dustproof slide plate from detaching from the supporting steel plate. The commonly used telescopic assemblies include spring telescopic assemblies and chain plate telescopic assemblies. Through the telescopic assembly, the dustproof slide plate always covers the expansion joint, ensuring the reliability of the expansion joint. During use, it has received unanimous praise from users in terms of maintenance and removal of dirt compared with previous bridge expansion joints.

[0004] However, the expansion joint of the bridge has a disadvantage, that is, when vehicles pass through the expansion joint, it makes a lot of noise, and a "clang" sound can often be heard, especially when heavy-loaded vehicles pass by, the noise is particularly loud. Moreover, after a period of use, the connecting bolts on the dustproof slide plate of the bridge expansion joint using the chain plate expansion assembly are often loose, so it still needs to be maintained regularly, which requires a lot of manpower, so the maintenance cost is still relatively high.

[0005] After long-term research by the inventor, it was found that the main reason for the loud noise was resonance. After observation and research on the vehicle passing through the expansion joint, the inventor found that when the vehicle travels to the middle of the dustproof skateboard, the dustproof skateboard will bear a heavier load, so the dustproof skateboard will go down, and when the vehicle passes through the dustproof skateboard, the dustproof skateboard will rebound with great force and disappear in a very short time. During this time, the dustproof skateboard will collide with the supporting steel plate and resonate with the chain plate expansion assembly, thereby causing noise and loosening of the connecting bolts. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a displacement component and a multi-directional displacement dustproof slide plate expansion joint.

[0007] The object of the present invention is achieved through the following technical scheme: a displacement assembly, including a displacement box, a beam and an elastic clamping device, there are two displacement boxes, and a accommodating groove is opened on the displacement box. The two ends of the beam are placed in the accommodating groove corresponding to the displacement box, and the transverse end walls of the beam and the transverse side walls of the corresponding accommodating groove have a transverse gap, the sum of the spacings of the two transverse gaps is greater than the deformation of the expansion joint, the two side walls of the beam and the longitudinal side walls of the accommodating groove have a longitudinal gap, the elastic clamping device is longitudinally spanned on the displacement box, and the elastic clamping device presses the top surface of the beam in the displacement box.

[0008] Optionally, the elastic clamping device includes an elastic locking assembly and a limit plate. The limit plate is longitudinally spanned on the displacement box. Multiple elastic locking assemblies are arranged on both longitudinal sides of the displacement box. The limit plate is connected to the corresponding elastic locking assemblies. The limit plate is clamped against the top surface of the displacement box and the top surface of the cross beam through multiple elastic locking assemblies. The elastic locking assembly is fixedly installed in the expansion joint.

[0009] Optionally, the elastic locking assembly includes a bolt sleeve, a compression spring, a pad, a fastening nut and an anchor bolt. A plurality of bolt sleeves are arranged on the position change box. The bolt sleeves are located on both longitudinal sides of the accommodating groove. A countersunk hole is provided on the limit plate. An anti-rotation fastening nut is installed in the bolt sleeve. A pad is fixedly installed on the upper mouth of the bolt sleeve. A through hole is provided on the pad for the anchor bolt to pass through. The bottom of the anchor bolt passes through the limit plate and the pad in turn and is locked with the fastening nut. The head of the anchor bolt is located in the countersunk hole. The compression spring is sleeved on the anchor bolt. The top of the compression spring abuts against the pad, and the bottom of the compression spring abuts against the fastening nut.

[0010] Optionally, the inner cavity of the bolt sleeve is a polygonal structure.

[0011] A multi-directionally displaceable dust-proof slide plate expansion joint comprises a dust-proof slide plate, a telescopic assembly, an anchoring steel plate and a supporting steel plate. Supporting steel plates are installed at both lateral ends of the expansion joint, and a plurality of anchoring steel plates are installed at longitudinal intervals on the bottom of the supporting steel plate. The telescopic assembly is located in the telescopic gap of the expansion joint, and both ends of the telescopic assembly are respectively fixedly installed on the lateral ends of the expansion joint, the middle part of the telescopic assembly is connected to the dust-proof slide plate, and the lateral ends of the dust-proof slide plate are attached to the corresponding supporting steel plates through the telescopic assembly. It also comprises a displacement assembly, which is divided into multiple groups, and the displacement boxes at both ends of the displacement assembly are correspondingly installed at the lateral ends of the expansion joint, the middle part of the crossbeam of the displacement assembly is fixedly connected to the bottom of the dust-proof slide plate, a notch for accommodating a limiting plate of the displacement assembly is provided on the supporting steel plate, and an elastic pressing device of the displacement assembly is fixedly installed on the expansion joint.

[0012] Optionally, the top surface of the crossbeam is flush with the top surface of the supporting steel plate, the top surface of the limiting plate is flush with the top surface of the dustproof sliding plate, and the top surface of the crossbeam is flush with the top surface of the shifting box.

[0013] Optionally, the telescopic assembly is a chain plate telescopic assembly or a spring telescopic assembly.

[0014] Optionally, vertical plates are provided on both lateral side walls of the expansion joint, and notches are provided on the vertical plates to facilitate the passage of the crossbeams. The notches of the vertical plates are fixedly connected to the displacement boxes, and the tops of the vertical plates are in contact with the supporting steel plates.

[0015] Optionally, a drainage trough is also installed on the expansion joint, and both ends of the drainage trough are respectively connected to the corresponding vertical plates.

[0016] Optionally, the elastic pressing device is fixedly connected to the anchor steel plate

[0017] The present invention has the following advantages:

[0018] 1. For the multi-directional dustproof slide expansion joint of the present invention, when the vehicle does not pass through the expansion joint, the anchor bolt is in a locked state, and the compression spring is in a compressed state at this time. The elastic restoring force of the compression spring always gives the limit plate a downward tendency, so that the limit plate always presses the top surface of the cross beam, thereby limiting the cross beam from moving upward. Since the cross beam and the dustproof slide are welded, the dustproof slide is further limited from moving upward, and the relative position relationship between the cross beam and the accommodating groove in the lateral direction can be adaptively adjusted with the deformation of the expansion joint, thereby ensuring the reliability of the normal use of the expansion joint;

[0019] 2. The multi-directionally displaceable dust-proof slide expansion joint of the present invention, when a vehicle passes through the expansion joint, when the wheel travels to the middle of the dust-proof slide, the dust-proof slide is deformed under the action of the heavy load, that is, the dust-proof slide goes down, and the cross beam also goes down with the dust-proof slide. Due to the downward rotation of the cross beam, the two ends of the cross beam have an upward deformation. Since the relative positions of the pad, bolt sleeve, anchor steel plate and displacement box remain unchanged, at this time, the two ends of the cross beam lift up the limit plate, and in the process of lifting the limit plate, the compression spring will be further compressed, so that the compression spring will generate a larger elastic restoring force, and when the elastic restoring force acts on the cross beam through the limit plate, it will limit the downward rotation of the cross beam, thereby reducing the downward rotation of the cross beam, and then hindering the downward rotation of the dust-proof slide, and when the vehicle passes through the dust-proof slide, due to the downward rotation of the dust-proof slide, the dust-proof slide has a strong rebound force, and the dust-proof slide is in the rebound process In the process, since the compression spring is always in a compressed state, the elastic restoring force generated by the compression spring has an inhibitory effect on the dustproof slide plate, and during the rebound of the dustproof slide plate, the compression spring can quickly absorb the rebound force of the dustproof slide plate, thereby reducing the rebound curvature of the dustproof slide plate, and then reducing the force of the collision between the dustproof slide plate and the supporting steel plate, thereby protecting the edge position of the supporting steel plate, thereby ensuring the service life of the supporting steel plate, and the compression spring plays a shock-absorbing role during the rebound of the dustproof slide plate. Therefore, when the vehicle passes through the expansion joint, the sound generated is small, and since the rebound curvature of the dustproof slide plate is reduced, the possibility of resonance between the dustproof slide plate and the connecting bolts is reduced, and due to the existence of the crossbeam, the connecting bolts are mainly subjected to lateral shear force, so the possibility of loosening of the connecting bolts is greatly reduced, thereby reducing the frequency of maintenance of the expansion joint of the dustproof slide plate and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic elevation diagram of the present invention;

[0021] Figure 2 It is a 1 / 2 top plan view of the present invention;

[0022] Figure 3 It is a side view of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation of the chain plate telescopic assembly;

[0024] Figure 5 This is a schematic diagram of the installation of the displacement component;

[0025] Figure 6 This is a schematic diagram of the installation of the crossbeam and the dustproof sliding plate;

[0026] Figure 7 This is a schematic diagram of the installation of the limit plate;

[0027] Figure 8 This is a schematic diagram of the installation of the bolt sleeve;

[0028] Fig. 9 is a structural schematic diagram of an elastic locking assembly;

[0029] In the figure, 1-dustproof slide plate, 2-baffle, 3-support steel plate, 4-anchor steel plate, 5-vertical plate, 6-drainage trough, 7-chain plate telescopic assembly, 8-displacement assembly, 81-crossbeam, 82-displacement box, 83-limiting plate, 84-anchor bolt, 85-fastening nut, 86-compression spring, 87-pad, 88-bolt sleeve. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, a multi-directionally displaceable dust-proof slide plate expansion joint comprises a dust-proof slide plate 1, an anchoring steel plate 4 and a supporting steel plate 3. In this embodiment, the vehicle travels in a horizontal direction, and supporting steel plates 3 are installed at both horizontal ends of the expansion joint. The supporting steel plates 3 are parallel to the road surface, and a plurality of anchoring steel plates 4 are installed at longitudinal intervals at the bottom of the supporting steel plates 3. Furthermore, anchoring holes are opened on the anchoring steel plates 4, and anchoring steel bars are longitudinally installed in the anchoring holes. Furthermore, the side walls of the anchoring steel plates 4 are also closely attached to the laterally arranged anchoring steel bars. Therefore, after the concrete is poured, the structural strength of both sides of the expansion joint can be guaranteed.

[0037] In this embodiment, the telescopic assembly is located in the telescopic gap of the expansion joint, and the two ends of the telescopic assembly are respectively fixedly mounted on the two lateral ends of the expansion joint, and the middle of the telescopic assembly is connected to the dustproof slide plate 1. Further, the telescopic assembly is a chain plate telescopic assembly 7 or a spring telescopic assembly, such as Figure 4As shown, preferably, the telescopic component is a chain plate telescopic component 7. Both the chain plate telescopic component 7 and the spring telescopic component are existing structures, and their installation methods are also existing technologies. Therefore, they will not be described in detail. The lateral ends of the dustproof slide plate 1 are fitted on the corresponding supporting steel plates 3 through the telescopic components. Preferably, when the dustproof slide plate 1 is installed, the bottom surface of the dustproof slide plate 1 is flush with the top surface of the supporting steel plate 3. Therefore, after the expansion joint is installed, the bottom surfaces of the two ends of the dustproof slide plate 1 are fitted with the supporting steel plate 3, and the dustproof slide plate 1 can slide relative to the supporting steel plate 3 during the deformation of the expansion joint. In this embodiment, the telescopic component preferably adopts a chain plate telescopic component 7. When installing the dustproof slide plate 1, after the initial installation, the middle part of the dustproof slide plate 1 is aligned with the center line of the gap of the expansion joint. Therefore, during the expansion and contraction process of the expansion joint, under the action of the expansion and contraction device, the middle part of the dustproof slide plate 1 is always aligned with the center line of the gap of the expansion joint. When selecting the dustproof slide plate 1, when the gap of the expansion joint is at the minimum spacing, there is a gap between the dustproof slide plate 1 and the corresponding baffle 2, and when the gap of the expansion joint is at the maximum spacing, the two ends of the dustproof slide plate 1 are still attached to the corresponding supporting steel plate 3, and the top of the anchoring steel plate 4 is welded to the bottom of the baffle 2. Preferably, the top of the baffle 2 is flush with the top of the dustproof slide plate 1.

[0038] In this embodiment, the multi-directional displacement dustproof slide expansion joint further comprises a displacement assembly 8, and the displacement assembly 8 is a plurality of groups. In this embodiment, the displacement assembly 8 is two groups and is arranged at both longitudinal ends of the expansion joint. Figure 5~Figure 9 As shown, the displacement assembly 8 includes a displacement box 82, a beam 81 and an elastic pressing device. There are two displacement boxes 82, and a receiving groove is opened on the displacement box 82. The two ends of the beam 81 are placed in the receiving groove corresponding to the displacement box 82, and the lateral end walls of the beam 81 and the lateral side walls of the corresponding receiving groove have a lateral gap. Furthermore, the sum of the spacings of the two lateral gaps is greater than the deformation of the expansion joint, so the beam 81 can move laterally and longitudinally in the receiving groove, and the beam 81 can adaptively change its relative position relationship with the displacement box 82 as the expansion joint is deformed. Preferably, the receiving groove The groove is a rectangular groove, and the crossbeam 81 is also a rectangular structure. There is a longitudinal gap between the two side walls of the crossbeam 81 and the longitudinal side walls of the groove. When the bridges at both ends of the expansion joint are in the process of expansion and contraction, if the two bridges deviate during the expansion and contraction process, the crossbeam 81 has space for adaptive adjustment in the longitudinal direction, thereby ensuring the reliability of the use of the displacement component 8. Moreover, since the thermal conductivity of the concrete and steel profiles on both sides of the expansion joint is different, the thermal deformation generated in the longitudinal direction is also different. The longitudinal gap can avoid the crossbeam 81 from getting stuck due to the different thermal deformation of the concrete and steel profiles.

[0039] In this embodiment, if Figure 7 and Figure 8As shown, the displacement boxes 82 at both ends of the displacement assembly 8 are installed on the two lateral ends of the expansion joint. Preferably, the displacement boxes 82 are located between two adjacent anchoring steel plates 4. In the present embodiment, the displacement assembly 8 is divided into two groups, and the two groups of displacement assemblies 8 are respectively located at the two ends of the expansion joint in the longitudinal direction. The middle part of the crossbeam 81 of the displacement assembly 8 is fixedly connected to the bottom of the dustproof slide plate 1, so the crossbeam 81 and the dustproof slide plate 1 move synchronously.

[0040] In this embodiment, if Figure 5 As shown, an elastic pressing device for pressing the top surface of the cross beam 81 is installed on the displacement box 82, and the elastic pressing device presses the top surface of the cross beam 81, and the cross beam 81 is fixedly connected to the dustproof slide plate 1. When the elastic pressing device is installed, the elastic pressing device presses the top surfaces of the two ends of the cross beam 81, and the dustproof slide plate 1 is fitted with the supporting steel plate 3. Preferably, the cross beam 81 and the dustproof slide plate 1 are welded. When the vehicle passes through the expansion joint, when the vehicle travels to the middle of the dustproof slide plate 1, at this time, the load borne by the dustproof slide plate 1 causes the dustproof slide plate 1 to swing downward, and the cross beam 81 also swings downward to a certain extent. At this time, the elastic pressing device makes an adaptive deformation in the vertical direction, but the elastic pressing device is always pressed tightly on the top surface of the end of the cross beam 81. When the vehicle passes through the expansion joint, the dustproof slide plate 1 will rebound, and the force generated by the rebound of the dustproof slide plate 1 will pass The force is transmitted to the elastic clamping device through the cross beam 81, and the elastic clamping device quickly absorbs most of the rebound force, thereby reducing the collision between the dustproof slide plate 1 and the supporting steel plate 3, and further reducing the rebound curvature of the dustproof slide plate 1, thereby reducing the sound of the vehicle passing through the expansion joint, and at the same time reducing the possibility of resonance between the dustproof slide plate 1 and the connecting bolts in the middle of the chain plate. After the cross beam 81 is installed at the bottom of the dustproof slide plate 1, the vertical displacement of the dustproof slide plate 1 is constrained by the displacement component 8, and the force on its connecting bolts in the vertical direction is very small. Therefore, the possibility of relative movement between the connecting bolts and the dustproof slide plate 1 is reduced. At this time, the connecting bolts mainly bear the lateral shear force, avoiding the requirement that the existing connecting bolts have to bear both the lateral shear force and the large vertical force, so the installation requirements for the connecting bolts are reduced.

[0041] In this embodiment, if Fig. 9As shown, the elastic clamping device includes an elastic locking component and a limit plate 83. The limit plate 83 is pressed against the top surface of the displacement box 82 and the top surface of the cross beam 81 through multiple groups of elastic locking components. In order to install the limit plate 83, a notch for accommodating the limit plate 83 of the displacement component 8 is opened on the support steel plate 3. During installation, after the support steel plate 3 is installed, the limit plate 83 can be directly installed at the notch corresponding to the support steel plate 3, so that the displacement component 8 is easy to install. Of course, the support steel plate 3 can also be installed after the displacement component 8 is installed. Furthermore, the elastic locking component includes a bolt sleeve 88, a compression spring 86, a fastening nut 85 and an anchor bolt 84. A plurality of bolt sleeves 88 are arranged on the displacement box 82. The bolt sleeves 88 are located on both longitudinal sides of the accommodating groove. In this embodiment, the bolt sleeve 88 is cylindrical, and its inner cylinder is a polygon. shaped structure, preferably, the inner tube of the bolt sleeve 88 is a rectangular structure, and the bolt sleeve 88 is welded to the longitudinal outer wall of the displacement box 82. Further, the elastic clamping device is located between two adjacent anchoring steel plates 4. Further, the elastic clamping device is located between two adjacent anchoring steel plates 4, and the bolt sleeve 88 adjacent to the anchoring steel plate 4 is welded to the anchoring steel plate 4, thereby improving the stability of the installation of the elastic clamping device. When in use, the bolt sleeve 88 is subjected to the reaction force of the compression spring 86 and is transmitted to the anchoring steel plate 4, thereby ensuring the reliability of the use of the elastic clamping device. In actual use, the installation accuracy of the bolt sleeve 88 is required to be relatively high. Therefore, during production, the anchoring steel plate 4 and the bolt sleeve 88 can be welded in the factory, and then during on-site construction, only the anchor bolts 84 and the limit plates 83 need to be installed.

[0042] In this embodiment, if Figure 7 , Figure 8 and Fig. 9 A countersunk hole is provided on the limiting plate 83, and an anti-rotation fastening nut 85 is installed in the bolt sleeve 88. A pad 87 is fixedly installed on the upper end of the bolt sleeve 88. Preferably, the pad 87 and the bolt sleeve 88 are connected by welding. Further, the top surface of the pad 87 is flush with the top surface of the displacement box 82, and the bottom of the anchor bolt 84 passes through the limiting plate 83 and the pad 87 in sequence and is locked with the fastening nut 85. The head of the anchor bolt 84 is located in the countersunk hole, and the compression spring 86 is sleeved on the anchor bolt 84. The top of the compression spring 86 abuts against the pad 87, and the bottom of the compression spring 86 abuts against the fastening nut. In this embodiment, the inner cavity of the bolt sleeve 88 is a polygonal structure, that is, the bolt sleeve 88 has a polygonal hole. Preferably, as Figure 8As shown, a square hole is provided on the bolt sleeve 88. When selecting, a square tube can be selected as the bolt sleeve. According to the size requirements, a suitable fastening nut 85 is selected, and the fastening nut 85 is placed in the inner cavity of the bolt sleeve 88. Since the outer wall of the fastening nut 85 has edges and corners, the edges and corners are supported by the side walls of the square hole, thereby limiting the rotation of the fastening nut 85. During installation, the fastening nut 85 and the compression spring 86 are first placed in the bolt sleeve 88 in sequence, and then the gasket 87 is welded in the bolt sleeve 88, and then the bolt sleeve 88 is installed on the outer side of the corresponding displacement box 82. Preferably, there is a gap between the displacement box 82 and the bolt sleeve 88. After the concrete is poured, the gap is filled with concrete, and then the two ends of the beam 81 are placed in the corresponding receiving grooves respectively, and finally the anchor bolts 8 The bottom of 4 passes through the limit plate 83 and the pad 87 in turn and is threadedly connected with the fastening nut 85, thereby completing the assembly of the displacement assembly 8. When it is needed, the assembled displacement box 82, the elastic clamping assembly and the crossbeam 81 are placed in the specified installation position, and then the outer wall of the bolt sleeve 88 is welded to the side wall of the corresponding anchor steel plate 4. After the head of the anchor bolt 84 is threadedly matched with the fastening nut 85, when the anchor bolt 84 is locked, the fastening nut will move upward, thereby compressing the compression spring 86. After the compression spring 86 is compressed, the compression spring 86 will apply an elastic restoring force to the fastening nut 85, and the elastic restoring force is transmitted to the limit plate 83 through the fastening nut 85 and the anchor bolt 84, so that the limit plate 83 presses the top surface of the displacement box 82 and the top surface of the crossbeam 81.

[0043] In this embodiment, the supporting steel plate 3 is provided with a notch through which the cross beam 81 passes. When the cross beam 81 is installed, there is a longitudinal gap between the cross beam 81 and the supporting steel plate 3. Preferably, the longitudinal gap is 2 mm. When the bridges on both sides of the expansion joint deviate during the deformation process, the cross beam 81 has space in the longitudinal direction for adaptive adjustment, thereby ensuring the reliability of the displacement component. In actual use, mud and sand may enter the accommodating groove through the gap, and then may enter the bottom of the cross beam 81, thereby raising the cross beam 81. When the cross beam 81 is raised, due to the cross beam The top of the beam 81 is in contact with the limit plate 83, so the limit plate 83 will also be raised, thereby further compressing the compression spring 86. That is to say, when mud and sand enter the bottom of the beam 81, the compression spring 86 will be adaptively compressed to prevent the beam 81 from being stuck, so that the beam 81 can be moved in both the horizontal and vertical directions, thereby ensuring the reliability of the use of the beam 81. Of course, in actual use, since the two ends of the beam 81 are always pressed by the limit plate 83, the bottom of the beam 81 is in contact with the bottom of the accommodating groove, so that mud and sand are difficult to enter the bottom of the beam 81.

[0044] In this embodiment, if Figure 6As shown, the top surface of the beam 81 is flush with the top surface of the supporting steel plate 3, the top surface of the limiting plate 83 is flush with the top surface of the dustproof slide plate 1, and the top surface of the beam 81 is flush with the top surface of the displacement box 82. Therefore, when the multi-directional displacement dustproof slide plate expansion joint is installed, the limiting plate 83 is pressed tightly against the top surface of the displacement box 82 and the top surface of the beam 81, and the ground of the limiting plate 83 is in contact with the corresponding supporting steel plate 3.

[0045] In this embodiment, if Figure 3 , Figure 4 and Figure 5 As shown, vertical plates 5 are provided on the two lateral walls of the expansion joint, and notches are opened on the vertical plates 5 for facilitating the passage of the cross beam 81, and the tops of the vertical plates 5 are in contact with the supporting steel plates 3. The vertical plates 5 support one end of the supporting steel plates 3 close to the dustproof slide plate 1, thereby supporting the supporting steel plates 3. Furthermore, the vertical plates 5 are welded to the anchoring steel plates 4. Therefore, when the wheels travel onto the supporting steel plates 3, part of the load of the supporting steel plates 3 is transmitted to the anchoring steel plates 4 through the vertical plates 5, thereby increasing the load of the supporting steel plates 3. Under the same load, the supporting steel plates 3 are less likely to deform, and the supporting steel plates 3 are not deformed. The supporting steel plates 3 will not squeeze the concrete, thereby not causing damage to the concrete, thereby improving the reliability of the use of the supporting steel plates 3 and the reliability of the use of the dustproof slide plate expansion joint. Furthermore, a drainage groove 6 is also installed on the expansion joint, and the two ends of the drainage groove 6 are respectively connected to the corresponding vertical plates 5.

[0046] The working process of the present invention is as follows: when the vehicle does not pass through the expansion joint, the dustproof slide plate 1 is attached to the corresponding supporting steel plate 3 under the action of gravity, and because the anchor bolt 84 is in a locked state, the compression spring 86 is in a compressed state at this time, and the elastic restoring force of the compression spring 86 always gives the limit plate 83 a downward tendency, so that the limit plate 83 always presses the top surface of the cross beam 81, thereby limiting the cross beam 81 from moving upward. Since the cross beam 81 and the dustproof slide plate 1 are welded, the dustproof slide plate 1 is further limited from moving upward. When the bridge is deformed, the width of the expansion joint changes at this time. Due to the existence of the chain plate telescopic assembly 7, the relative position of the dustproof slide plate 1 and the supporting steel plate 3 changes, and the middle part of the dustproof slide plate 1 is always aligned with the center line of the expansion joint. When the relative position of the dustproof slide plate 1 and the supporting steel plate 3 changes, the relative position relationship between the cross beam 81 and the accommodating groove in the lateral direction is adaptively adjusted with the deformation of the expansion joint, thereby ensuring the reliability of the normal use of the expansion joint.

[0047] When the vehicle passes through the expansion joint, when the wheel travels to the middle of the dustproof slide plate 1, the dustproof slide plate 1 is deformed under the action of the heavy load, that is, the dustproof slide plate 1 is turned down, and the cross beam 81 is also turned down with the dustproof slide plate 1. Due to the turning down of the cross beam 81, the two ends of the cross beam 81 have an upward warping deformation. Since the relative positions of the pad 87, the bolt sleeve 88, the anchor steel plate 4 and the displacement box 82 remain unchanged, at this time, the two ends of the cross beam 81 lift up the limit plate 83, and the limit plate 83 lifts up the limit plate 83. During the process, the compression spring 86 will be further compressed, so that the compression spring 86 will generate a larger elastic restoring force, and when the elastic restoring force acts on the cross beam 81 through the limit plate 83, it will limit the downward rotation of the cross beam 81, thereby reducing the downward rotation of the cross beam 81, and then hindering the downward rotation of the dustproof slide plate 1. When the vehicle passes through the dustproof slide plate 1, the dustproof slide plate 1 has a strong rebound force due to the downward rotation of the dustproof slide plate 1, and the dustproof slide plate 1 rebounds during the rebound process. During the process, since the compression spring 86 is always in a compressed state, the elastic restoring force generated by the compression spring 86 has an obstructive effect on the dustproof slide plate 1, and during the rebound of the dustproof slide plate 1, the compression spring 86 can quickly absorb the rebound force of the dustproof slide plate 1, thereby reducing the rebound curvature of the dustproof slide plate 1, and further reducing the force of the collision between the dustproof slide plate 1 and the supporting steel plate 3, thereby protecting the edge position of the supporting steel plate 3, thereby ensuring the service life of the supporting steel plate 3, and the compression spring 86 plays a shock-absorbing role in the rebound process of the dustproof slide plate 1, so when the vehicle passes through the expansion joint, the sound it generates is small, and since the rebound curvature of the dustproof slide plate 1 is reduced, the possibility of resonance between the dustproof slide plate 1 and the connecting bolts is reduced, and due to the existence of the cross beam 81, the connecting bolts are mainly subjected to lateral shear force, so the possibility of loosening of the connecting bolts is greatly reduced, thereby reducing the frequency of maintenance of the dustproof slide plate expansion joint and reducing labor costs.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A displacement component, characterized in that: The invention comprises a displacement box, a cross beam and an elastic clamping device, wherein there are two displacement boxes, and a receiving groove is provided on the displacement box, and the two ends of the cross beam are placed in the receiving groove corresponding to the displacement box, and the transverse end walls of the cross beam and the transverse side walls corresponding to the receiving groove have a transverse gap, and the sum of the spacings of the two transverse gaps is greater than the deformation of the expansion joint, and the two side walls of the cross beam and the longitudinal side walls of the receiving groove have a longitudinal gap, and the elastic clamping device is longitudinally spanned on the displacement box, and the elastic clamping device presses the top surface of the cross beam in the displacement box, and the elastic clamping device comprises an elastic locking assembly and a limiting plate, and the limiting plate is longitudinally spanned on the displacement box, and a plurality of the elastic locking assemblies are arranged on both longitudinal sides of the displacement box, and the limiting plate is connected to the corresponding elastic locking assembly, and the limiting plate is connected to the corresponding elastic locking assembly through a plurality of elastic locks The tightening assembly presses the top surface of the displacement box and the top surface of the cross beam, and the elastic locking assembly is fixedly installed in the expansion joint. The elastic locking assembly comprises a bolt sleeve, a compression spring, a pad, a fastening nut and an anchor bolt. The displacement box is provided with a plurality of bolt sleeves, and the bolt sleeves are located on both longitudinal sides of the accommodating groove, the limit plate is provided with a countersunk hole, and an anti-rotation fastening nut is installed in the bolt sleeve, and a pad is fixedly installed on the upper mouth of the bolt sleeve, and a through hole is provided on the pad to pass the anchor bolt, and the bottom of the anchor bolt passes through the limit plate and the pad in turn and is locked with the fastening nut, the head of the anchor bolt is located in the countersunk hole, and the compression spring is sleeved on the anchor bolt, the top of the compression spring abuts against the pad, and the bottom of the compression spring abuts against the fastening nut.

2. A displacement assembly according to claim 1, characterized in that: The inner cavity of the bolt sleeve is a polygonal structure.

3. A multi-directionally displaceable dust-proof slide expansion joint, comprising a dust-proof slide, a telescopic assembly, an anchoring steel plate and a supporting steel plate, the supporting steel plates are installed at both lateral ends of the expansion joint, a plurality of the anchoring steel plates are installed at longitudinal intervals at the bottom of the supporting steel plate, the telescopic assembly is located in the telescopic gap of the expansion joint, and the two ends of the telescopic assembly are respectively fixedly installed on the lateral ends of the expansion joint, the middle part of the telescopic assembly is connected to the dust-proof slide, and the lateral ends of the dust-proof slide are attached to the corresponding supporting steel plates through the telescopic assembly, characterized in that: It also includes the displacement assembly as described in claim 1 or 2, wherein the displacement assembly is in multiple groups, and the displacement boxes at both ends of the displacement assembly are correspondingly installed at the two lateral ends of the expansion joint, the middle part of the crossbeam of the displacement assembly is fixedly connected to the bottom of the dustproof slide plate, and a notch for accommodating a limiting plate of the displacement assembly is opened on the supporting steel plate, and the elastic clamping device of the displacement assembly is fixedly installed on the expansion joint.

4. The multi-directional dustproof sliding plate expansion joint according to claim 3 is characterized in that: The top surface of the crossbeam is flush with the top surface of the supporting steel plate, the top surface of the limiting plate is flush with the top surface of the dustproof sliding plate, and the top surface of the crossbeam is flush with the top surface of the shifting box.

5. The multi-directional dustproof sliding plate expansion joint according to claim 3 is characterized in that: The telescopic assembly is a chain plate telescopic assembly or a spring telescopic assembly.

6. The multi-directional dustproof sliding plate expansion joint according to claim 3 is characterized in that: Vertical plates are arranged on the two lateral side walls of the expansion joint, and notches are opened on the vertical plates to facilitate the passage of the crossbeams. The notches of the vertical plates are fixedly connected to the displacement box, and the tops of the vertical plates are in contact with the supporting steel plates.

7. The multi-directional dustproof sliding plate expansion joint according to claim 6, characterized in that: A drainage groove is also installed on the expansion joint, and both ends of the drainage groove are respectively connected to the corresponding vertical plates.

8. The multi-directional dustproof sliding plate expansion joint according to claim 3 is characterized by: The elastic pressing device is fixedly connected to the anchoring steel plate.

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