Bridge-head bumping prevention road-bridge telescopic structure

Abstract

The application provides a road-bridge expansion structure for preventing bridge-head bumping, and relates to the technical field of bridges. The road-bridge expansion structure comprises two bridges, the inner walls of the two bridges are fixedly provided with mounting plates, the inner walls of the two mounting plates are slidably connected with support plates, two rows of the support plates are rotatably provided with a load-bearing plate on the side close to each other, the upper surface of the load-bearing plate is fixedly provided with a connecting seat, the connecting seat and the bridge are fixedly provided with a water barrier on the side close to each other, the surface of the load-bearing plate is provided with a mounting structure, and the replacement device comprises a reserved groove with a limiting function and a mounting block. The mounting structure is arranged, the quick dismounting work of the buffer mechanism between the mounting plate and the load-bearing plate is facilitated, the regular maintenance work of the buffer mechanism by the staff is facilitated, the use performance of the road-bridge expansion structure is improved to a certain extent, and the occurrence of the bridge-head bumping phenomenon is reduced as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridges, and particularly relates to a road-bridge expansion structure for preventing bridge-head bumping. BACKGROUND

[0002] A bridge is an indispensable facility for road traffic, and in order to ensure that a bridge span structure can freely deform according to a static force diagram under the influence of factors such as temperature change, concrete shrinkage and creep, and load action, and ensure smooth passage of vehicles, an expansion joint should be arranged between two adjacent beam ends and between a beam end and a bridge abutment back wall, and an expansion device should be arranged at the expansion joint.

[0003] Chinese patent application CN110607744A3 discloses a road-bridge expansion structure for preventing bridge-head bumping, which comprises a bridge body, the bridge body comprising a first bridge and a second bridge, the first bridge and the second bridge having a gap therebetween, and the first bridge and the second bridge being provided with a first slot and a second slot at a joint with the gap, respectively, the first slot and the second slot being provided with a first connecting seat and a second connecting seat above, respectively, the first connecting seat and the second connecting seat being provided with a bearing plate, the bearing plate being arranged above the gap of the bridge body, and an expansion assembly being arranged between the bearing plate and the bridge body, the expansion assembly being arranged in a horizontal direction, the two ends of the expansion assembly being fixedly connected with the bearing plate and the bridge body, respectively, the expansion assembly being arranged between the bearing plate and the bridge body to offset the horizontal friction force generated by a vehicle on the bearing plate, reduce the serious wear of the expansion joint structure caused by the friction force, protect the expansion joint from being damaged, and thus achieve the effect of preventing bridge-head bumping.

[0004] However, the above-mentioned patent and prior art still have the following defects:

[0005] In the process of long-term use of the expansion structure, the spring between the mounting plate and the bearing plate has a situation of reduced buffering capacity, and the buffering mechanism is usually fixedly installed between the bearing plate and the mounting plate, so that the user needs to spend a long time to complete the disassembly and assembly of the buffering mechanism, thereby increasing the installation and maintenance time of the buffering mechanism between the mounting plate and the bearing plate, and reducing the installation and maintenance efficiency of the mounting plate and the bearing plate. SUMMARY

[0006] The present application aims to solve the problem of inconvenient installation and maintenance of the buffering mechanism between the mounting plate and the bearing plate in the prior art, and provides a road-bridge expansion structure for preventing bridge-head bumping.

[0007] In order to achieve the above object, the present application adopts the following technical scheme: A road-bridge expansion structure for preventing bridge-head bumping, comprising two bridges, the inner walls of the two bridges are fixedly provided with mounting plates, the inner walls of the two mounting plates are slidably connected with a plurality of support plates, the sides of the two rows of support plates close to each other are rotatably provided with a bearing plate, the upper surface of the bearing plate is fixedly provided with a connecting seat, the sides of the connecting seat and the bridge close to each other are fixedly provided with a water barrier, the surface of the bearing plate is provided with a mounting structure, and the replacement device comprises a reserved groove with a limiting function, a mounting block, an expansion rod with expansion and buffering functions, an expansion cylinder, a rectangular plate and a first spring.

[0008] The effect of the above components is that: the mounting structure facilitates the quick disassembly and assembly of the buffering mechanism between the mounting plate and the bearing plate, facilitates the regular maintenance of the buffering mechanism by the staff, improves the use performance of the road-bridge expansion structure to a certain extent, and reduces the occurrence of bridge-head bumping as much as possible.

[0009] Preferably, the reserved groove of the "T" structure is arranged on the lower surface of the bearing plate, the mounting blocks are slidably connected to the inner wall of the reserved groove, the lower surfaces of the expansion rod and the mounting block are fixedly connected, the expansion cylinder is slidably connected to the side wall of the expansion rod, the rectangular plate is fixedly connected to the end of the expansion cylinder away from the expansion rod, the first spring is arranged on the sides of the mounting block and the rectangular plate close to each other, and the two sides of the mounting block are inclined surfaces.

[0010] The effect of the above components is that: the first spring plays a certain buffering role in use, improves the use performance of the bridge joint, and further reduces the bridge-head bumping.

[0011] Preferably, a rectangular groove is arranged on the upper surface of the mounting block, a clamping strip is slidably arranged on the inner wall of the bearing plate, a plurality of protrusions are uniformly arranged on the side wall of the clamping strip, and the size of the protrusions on the clamping strip is matched with the size of the rectangular groove.

[0012] The effect of the above components is that: the protrusions on the clamping strip are clamped in the inner wall of the rectangular groove of the mounting block, and the quick installation of the buffering mechanism can be realized at this time.

[0013] Preferably, the sides of the rectangular plates close to each other are fixedly connected with ropes, and two rollers are rotatably arranged on the inner wall of the rectangular plate.

[0014] The effect of the above components is that: the mounting block is sleeved on the inner wall of the reserved groove, the mounting block with the inclined side wall facilitates the quick positioning of the bearing plate and the mounting block, the ropes facilitate the control of the positions of the two rectangular plates, the rollers on the rectangular plate reduce the friction between the rectangular plate and the mounting plate, and the use performance of the buffering mechanism is further improved.

[0015] Preferably, the side of the bearing plate and the clamping strip close to each other is fixedly connected with a second spring, the side wall of the clamping strip is fixedly connected with a fixed pin, the surface of the fixed pin is rotatably installed with a supporting block, and the side wall of the bearing plate is fixedly connected with an arc-shaped strip.

[0016] The above-mentioned components achieve the effects that the clamping strip is clamped on the inner wall of the rectangular groove of the mounting block under the elastic force of the second spring, the quick installation of the buffering mechanism is realized, the supporting block on the fixed pin is rotated, the supporting block is clamped on the inner wall of the groove of the arc-shaped strip, and the temporary support of the clamping strip is realized.

[0017] Preferably, the surface of the rectangular plate is provided with a replacement device, the replacement device comprises a replacement device, the replacement device comprises two sliding strips, the upper end of each of the two sliding strips is fixedly installed with a fixed rod, the upper side of the fixed rod is slidably installed with a sleeve, the first spring is sleeved on the surface of the sleeve and the fixed rod, the upper end of the sleeve is fixedly connected with a screw block, the surface of the screw block is threadedly connected with an auxiliary block, and the cross section of the auxiliary block is in a "V" type structure.

[0018] The above-mentioned components achieve the effects that after the first spring is driven out from between the rectangular plate and the mounting block, the auxiliary block on the screw block is rotated and moved away from the surface of the screw block, the first spring on the surface of the fixed rod and the sleeve can be taken out, after the first spring on the fixed rod and the sleeve is taken out and replaced, the auxiliary block is sleeved on the surface of the screw block, and the preliminary limiting of the first spring is realized.

[0019] Preferably, the side wall of the sliding strip is fixedly connected with a positioning block, a screw rod is threadedly inserted into the positioning block, and the screw rod and the telescopic cylinder are rotatably connected.

[0020] The above-mentioned components achieve the effects that the screw rod is rotated and the screw rod and the telescopic cylinder are rotated, and the driving of the sliding strip in the telescopic cylinder is realized.

[0021] Preferably, the side wall of the rectangular plate is fixedly provided with an application device, the application device comprises a fixed frame, the upper surface of the fixed frame and the rectangular plate are fixedly connected, the side wall of the fixed frame is fixedly connected with a circular ring frame, the circular ring frame is a hollow structure, a plurality of lubricating blocks are uniformly and slidably connected into the circular ring frame, a reserved hole is formed in the end face of the lubricating block, a through hole is formed in the side wall of the lubricating block, the through hole and the reserved hole are communicated, a third spring is fixedly installed on the side close to each other between the lubricating block and the inner wall of the circular ring frame, and the telescopic rod is sleeved on the outer surface of the circular ring frame.

[0022] The effect achieved by the components is that the lubricant will flow into the inner wall of the annular frame along the connecting pipe, and when the lubricating block stays between the two convex strips, the through hole will stay in the position inside the annular frame under the elastic force of the third spring, and at this time, the sealing of the lubricant can be realized.

[0023] Preferably, the side wall of the telescopic rod is uniformly and fixedly connected with a plurality of convex strips, and the side of each of the two convex strips close to each other is a bevel structure.

[0024] The effect achieved by the components is that the lubricating block will be extruded by the convex strips, at this time, the through hole will move to the inner wall of the annular frame, a communication structure will be formed between the inner cavity of the annular frame, the through hole and the reserved hole, the lubricant will flow on the surface of the convex strips, thereby realizing the lubrication work on the surface of the convex strips, and further facilitating the lubrication work between the telescopic cylinder and the telescopic rod, reducing the friction during the use of the telescopic structure as much as possible, and improving the use performance of the telescopic structure.

[0025] Preferably, the side wall of the annular frame is communicated with a connecting pipe, and the end of the connecting pipe away from the annular frame is threadedly connected with a storage cylinder.

[0026] The effect achieved by the components is that after the storage cylinder is filled with the lubricant, the surface of the connecting pipe is rotated, and the provision of the lubricant in the annular frame is facilitated.

[0027] Compared with the prior art, the advantages and positive effects of the present application are that,

[0028] 1. In the present application, by setting the installation structure, when the buffer mechanism between the bearing plate and the mounting plate needs to be installed and maintained, the support block on the fixed pin is rotated, the support block is clamped on the inner wall of the groove of the arc-shaped strip, at this time the temporary support work of the clamping strip can be realized, the installation block will be released from the restraint work of the clamping strip, the rope can be directly pulled, the buffer mechanism between the bearing plate and the mounting plate can be pulled out, at this time the installation and maintenance of the buffer mechanism can be realized, when the maintained buffer mechanism needs to be installed, first rotate the support block on the fixed pin, clamp the support block on the inner wall of the groove of the arc-shaped block, at this time the temporary fixing work of the clamping strip after being lifted to a certain height can be realized, the installation block is sleeved on the inner wall of the reserved slot, the installation block with the inclined surface structure facilitates the quick positioning work of the bearing plate and the installation block, the rope facilitates the control of the position between the two rectangular plates, the rectangular slot on each installation block is moved to the side close to the protrusion, at this time the support block on the arc-shaped block is turned out, the clamping strip will be clamped on the inner wall of the rectangular slot of the installation block under the action of the second spring elastic force, at this time the quick installation work of the buffer mechanism can be realized, the roller on the rectangular plate reduces the friction between the installation plate, further improves the use performance of the buffer mechanism, the first spring plays a certain buffering role in the use process, improves the use performance of the bridge joint, further reduces the bridgehead car jumping situation, through the setting of the installation structure, the quick disassembly and assembly work of the buffer mechanism between the installation plate and the bearing plate is facilitated, the regular maintenance work of the buffer mechanism by the staff is facilitated, the use performance of the road and bridge expansion structure is improved to a certain extent, and the occurrence of the bridgehead car jumping phenomenon is reduced as much as possible.

[0029] 2. In the present application, by setting the replacement device, when the first spring between the installation block and the rectangular plate needs to be replaced, first rotate the screw rod, the inside of the telescopic cylinder rotates, at this time the driving work of the sliding strip in the telescopic cylinder can be realized, after the first spring is driven out from between the rectangular plate and the installation block, the auxiliary block on the screw block is rotated, the auxiliary block is turned out from the surface of the screw block, the taking out work of the first spring on the surface of the fixed rod and the sleeve can be realized, after the first spring on the fixed rod and the sleeve is taken out and replaced, the auxiliary block is sleeved on the surface of the screw block, the preliminary limiting work of the first spring can be realized, the inclined surface of the auxiliary block is aligned with the installation block, at this time the screw rod is rotated, the limiting strip will slide in the telescopic cylinder, at this time the inclined surface of the auxiliary block will relatively move with the installation block, the first spring between the installation block and the limiting strip can be inserted between the installation block and the rectangular plate, by setting the replacement device, the compression and replacement work of the first spring between the installation block and the rectangular plate is facilitated, the installation and replacement efficiency of the first spring between the installation block and the rectangular plate is improved, and the use performance of the first spring is further improved.

[0030] 3. In this invention, by setting up an application device, after the storage cylinder is filled with lubricant, it is rotatably connected to the surface of the connecting tube, which facilitates the supply of lubricant to the annular frame. The lubricant will flow along the connecting tube onto the inner wall of the annular frame. When the lubricating block stops between the two protrusions, the lubricating block will be driven by the elastic force of the third spring to keep the through hole inside the annular frame, thus achieving the sealing of the lubricant. When the telescopic rod and telescopic cylinder are vibrated and extend or retract, the lubricating block will be squeezed by the protrusions. At this time, the through hole will move to the inner wall of the annular frame, and the inner cavity of the annular frame and the through hole will be closed. A connecting structure is formed between the pre-drilled holes, allowing lubricant to flow onto the surface of the raised strip, thus achieving lubrication of the raised strip surface. This facilitates lubrication between the telescopic cylinder and the telescopic rod, minimizing friction during use and improving the performance of the telescopic structure. After the telescopic cylinder and telescopic rod are reset, the through holes are blocked by the inside of the annular frame, preventing lubricant waste. By setting up an applicator, lubrication of the telescopic rod and telescopic cylinder is only performed during vehicle traffic, improving the performance of the telescopic structure while avoiding lubricant waste. Attached Figure Description

[0031] Figure 1 A three-dimensional structural diagram of a road and bridge expansion joint structure for preventing bridge approach slab settlement is provided for this invention.

[0032] Figure 2 This invention provides a cross-sectional structural diagram of a road and bridge expansion joint to prevent vehicle slab settlement at bridge approach.

[0033] Figure 3 This invention provides a partial structural diagram of the installation structure in a road and bridge expansion joint to prevent vehicle approach slab settlement.

[0034] Figure 4 This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 3 Another structural diagram from a different angle;

[0035] Figure 5 This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 2 A schematic diagram of a partial structure;

[0036] Figure 6 This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 3 A schematic diagram of a partial structure;

[0037] Figure 7 This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 4 A schematic diagram of a partial structure;

[0038] Figure 8This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 5 Enlarged view of point A;

[0039] Figure 9 This invention provides a schematic diagram of the coating device in a road and bridge expansion joint to prevent vehicle slumping at bridge approach.

[0040] Figure 10 This invention proposes a road and bridge expansion joint structure to prevent bridge approach slab settlement. Figure 9 Enlarged view of point B.

[0041] Legend: 1. Bridge; 2. Load-bearing plate; 3. Connecting seat; 4. Support plate; 5. Waterproof strip; 6. Installation structure; 601. Telescopic cylinder; 602. Clip; 603. Mounting block; 604. Rope; 605. Rectangular plate; 606. Telescopic rod; 607. First spring; 608. Second spring; 609. Reserved groove; 610. Arc strip; 611. Fixing pin; 612. Support block; 613. Roller; 7. Replacement device; 71. Sliding strip; 72. Screw; 73. Fixing rod; 74. Auxiliary block; 75. Sleeve; 76. Positioning block; 77. Screw block; 8. Coating device; 81. Fixing frame; 82. Circular frame; 83. Storage cylinder; 84. Connecting pipe; 85. Lubricating block; 86. Third spring; 87. Through hole; 88. Reserved hole; 89. Protruding strip; 9. Mounting plate. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0044] Example 1, such as Figures 1-10 As shown, the present invention provides a road and bridge expansion joint structure to prevent bridge approach slab settlement, comprising two bridges 1, each with an mounting plate 9 fixedly installed on its inner wall, and a plurality of support plates 4 slidably connected to the inner walls of the two mounting plates 9. A bearing plate 2 is rotatably installed on the side of the two rows of support plates 4 that are close to each other. A connecting seat 3 is fixedly installed on the upper surface of the bearing plate 2. A water-proof strip 5 is fixedly installed on the side of the connecting seat 3 and the bridge 1 that are close to each other. An installation structure 6 is provided on the surface of the bearing plate 2. A replacement device 7 is provided on the surface of the rectangular plate 605. An applicator 8 is fixedly provided on the side wall of the rectangular plate 605.

[0045] The specific settings and functions of the mounting structure 6, the replacement device 7 and the coating device 8 will be described below.

[0046] As shown in Figure 5 and Figure 6 The replacement device 7 comprises a reserved slot 609 with a limiting function, a mounting block 603, an extension rod 606 with a telescopic and buffering function, an extension cylinder 601, a rectangular plate 605 and a first spring 607. By setting the mounting structure 6, the quick disassembly and assembly work of the buffering mechanism between the mounting plate 9 and the bearing plate 2 is facilitated, the regular maintenance work of the buffering mechanism by the staff is facilitated, the use performance of the road and bridge telescopic structure is improved to a certain extent, and the occurrence of the bridgehead bumping phenomenon is reduced as much as possible.

[0047] The reserved slot 609 with a "T" structure is arranged on the lower surface of the bearing plate 2, the mounting blocks 603 are slidably connected to the inner wall of the reserved slot 609, the lower surface of the extension rod 606 is fixedly connected to the mounting blocks 603, the side wall of the extension cylinder 601 is slidably connected to the extension rod 606, the rectangular plate 605 is fixedly connected to the end of the extension cylinder 601 away from the extension rod 606, the first spring 607 is installed on the side of the mounting block 603 and the rectangular plate 605 close to each other, and the two sides of the mounting block 603 are inclined surfaces. The first spring 607 plays a certain buffering role in the use process, improves the use performance of the bridge joint of the bridge 1, and further reduces the bridgehead bumping situation. The upper surface of the mounting block 603 is provided with a rectangular slot, the inner wall of the bearing plate 2 is slidably provided with a clamping strip 602, the side wall of the clamping strip 602 is uniformly provided with a plurality of protrusions, and the size of the protrusions on the clamping strip 602 is matched with the size of the rectangular slot. The protrusions on the clamping strip 602 are clamped in the inner wall of the rectangular slot of the mounting block 603, and at this time the quick installation work of the buffering mechanism can be realized.

[0048] The rope 604 is fixedly connected to one side of each of the plurality of rectangular plates 605 close to each other, and two rollers 613 are rotatably installed on the inner wall of the rectangular plate 605. The mounting block 603 is sleeved on the inner wall of the reserved groove 609, and the side wall of the mounting block 603 is of an inclined surface structure, which facilitates the quick positioning work of the bearing plate 2 and the mounting block 603. The rope 604 facilitates the control of the position between the two rectangular plates 605, and the roller 613 on the rectangular plate 605 reduces the friction between the mounting plate 9 and the bearing plate 2, further improving the use performance of the buffer mechanism. The second spring 608 is fixedly connected to one side of the bearing plate 2 close to the clamping strip 602, the side wall of the clamping strip 602 is fixedly connected with the fixed pin 611, the support block 612 is rotatably installed on the surface of the fixed pin 611, the side wall of the bearing plate 2 is fixedly connected with the arc-shaped strip 610, and the upper surface of the arc-shaped strip 610 is provided with a groove. The clamping strip 602 is clamped on the inner wall of the rectangular groove of the mounting block 603 under the action of the elastic force of the second spring 608, and at this time, the quick installation work of the buffer mechanism can be realized. The support block 612 on the fixed pin 611 is rotated and clamped in the inner wall of the groove of the arc-shaped strip 610, and at this time, the temporary support work of the clamping strip 602 can be realized.

[0049] As shown in Figure 5 and Figure 7 The replacement device 7 comprises two sliding strips 71, the upper end of each of the two sliding strips 71 is fixedly installed with a fixed rod 73, the upper side of the fixed rod 73 is slidably installed with a sleeve 75, the first spring 607 is sleeved on the surface of the sleeve 75 and the fixed rod 73, the upper end of the sleeve 75 is fixedly connected with a screw block 77, the surface of the screw block 77 is threadedly connected with an auxiliary block 74, and the cross section of the auxiliary block 74 is of a “V” type structure. After the first spring 607 is driven out from between the rectangular plate 605 and the mounting block 603, the auxiliary block 74 on the screw block 77 is rotated and turned out from the surface of the screw block 77, and then the first spring 607 on the surface of the fixed rod 73 and the sleeve 75 can be taken out. After the first spring 607 on the fixed rod 73 and the sleeve 75 is taken out and replaced, the auxiliary block 74 is sleeved on the surface of the screw block 77, and then the preliminary limiting work of the first spring 607 can be realized. The side wall of the sliding strip 71 is fixedly connected with a positioning block 76, the screw rod 72 is threadedly inserted into the positioning block 76, and the screw rod 72 is rotatably connected with the inside of the telescopic cylinder 601. The screw rod 72 is rotated and rotated in the inside of the telescopic cylinder 601, and at this time, the driving work of the sliding strip 71 in the telescopic cylinder 601 can be realized.

[0050] As shown in Figure 9 and Figure 10As shown, the coating device 8 comprises a fixed frame 81, the upper surface of the fixed frame 81 and the rectangular plate 605 are fixedly connected, the side wall of the fixed frame 81 is fixedly connected with a circular ring frame 82, the circular ring frame 82 is a hollow structure, a plurality of lubricating blocks 85 are uniformly and slidably connected in the circular ring frame 82, the end face of the lubricating block 85 is provided with a reserved hole 88, the side wall of the lubricating block 85 is provided with a through hole 87, the through hole 87 and the reserved hole 88 are communicated, the third spring 86 is fixedly installed on the side of the lubricating block 85 and the inner wall of the circular ring frame 82 which are close to each other, and the circular ring frame 82 is sleeved on the outer surface of the telescopic rod 606. The lubricant will flow into the inner wall of the circular ring frame 82 along the connecting pipe 84, when the lubricating block 85 stays at the position between the two convex strips 89, the lubricating block 85 will be driven by the elastic force of the third spring 86 to stay at the position in the circular ring frame 82, at this time, the sealing work of the lubricant can be realized.

[0051] The side wall of the telescopic rod 606 is uniformly fixedly connected with a plurality of convex strips 89, and the side of the two convex strips 89 close to each other is a bevel structure. The lubricating block 85 will be extruded by the convex strip 89, at this time, the through hole 87 will move to the inner wall of the circular ring frame 82, a communication structure will be formed between the inner cavity of the circular ring frame 82 and the through hole 87 and the reserved hole 88, the lubricant will flow on the surface of the convex strip 89, so as to realize the lubrication work of the surface of the convex strip 89, and further facilitate the lubrication work between the telescopic cylinder 601 and the telescopic rod 606, reduce the friction in the use process of the telescopic structure as much as possible, and improve the use performance of the telescopic structure. The side wall of the circular ring frame 82 is communicated with the connecting pipe 84, one end of the connecting pipe 84 away from the circular ring frame 82 is threadedly connected with a storage cylinder 83. After the storage cylinder 83 is filled with lubricant, the surface of the connecting pipe is rotated, which facilitates the provision of lubricant in the circular ring frame 82.

[0052] The whole working principle is that when the buffer mechanism between the bearing plate 2 and the mounting plate 9 needs to be installed and maintained, the support block 612 on the fixed pin 611 is rotated, the support block 612 is clamped on the inner wall of the groove of the arc-shaped strip 610, at this time the temporary support work of the clamping strip 602 can be realized, the mounting block 603 is separated from the restraint work of the clamping strip 602, the rope 604 is directly pulled, the buffer mechanism between the bearing plate 2 and the mounting plate 9 can be pulled out, at this time the installation and maintenance of the buffer mechanism can be realized, when the installation of the maintained buffer mechanism is needed, the support block 612 on the fixed pin 611 is rotated first, the support block 612 is clamped on the inner wall of the groove of the arc-shaped block, at this time the temporary fixing work of the position of the clamping strip 602 after being lifted to a certain height can be realized, the mounting block 603 is sleeved on the inner wall of the reserved groove 609, the side wall of the mounting block 603 is a inclined surface structure, which facilitates the quick positioning work of the bearing plate 2 and the mounting block 603, the rope 604 facilitates the control of the position between the two rectangular plates 605, the rectangular groove on each mounting block 603 is moved to the side close to the protruding block, at this time the support block 612 on the arc-shaped block is turned out, the clamping strip 602 is clamped on the inner wall of the rectangular groove of the mounting block 603 under the action of the elastic force of the second spring 608, at this time the quick installation work of the buffer mechanism can be realized, the roller 613 on the rectangular plate 605 reduces the friction between the mounting plate 9, further improves the use performance of the buffer mechanism, the first spring 607 plays a certain buffering role in the use process, improves the use performance of the bridge joint of the bridge 1, further reduces the bridgehead car jumping situation, through the setting of the mounting structure 6, the quick disassembly and assembly work of the buffer mechanism between the mounting plate 9 and the bearing plate 2 is facilitated, the regular maintenance work of the buffer mechanism by the workers is facilitated, the use performance of the road and bridge expansion structure is improved to a certain extent, and the occurrence of the bridgehead car jumping phenomenon is reduced as much as possible.

[0053] When the first spring 607 between the mounting block 603 and the rectangular plate 605 needs to be replaced, the screw rod 72 is rotated, the inside of the telescopic cylinder 601 is rotated, the driving work of the slide bar 71 in the telescopic cylinder 601 can be realized, the first spring 607 is driven out from between the rectangular plate 605 and the mounting block 603, the auxiliary block 74 on the screw block 77 is rotated, the auxiliary block 74 is rotated away from the surface of the screw block 77, the taking-out work of the first spring 607 on the surface of the fixed rod 73 and the sleeve 75 can be realized, after the first spring 607 on the fixed rod 73 and the sleeve 75 is taken out and replaced, the auxiliary block 74 is sleeved on the surface of the screw block 77, the preliminary limiting work of the first spring 607 can be realized, the inclined surface of the auxiliary block 74 is aligned with the mounting block 603, the screw rod 72 is rotated at this time, the limiting strip is driven to slide in the inside of the telescopic cylinder 601, at this time, the inclined surface of the auxiliary block 74 moves relative to the mounting block 603, the plugging work of the first spring 607 between the mounting block 603 and the limiting strip can be realized, the compression and replacement work of the first spring 607 between the mounting block 603 and the rectangular plate 605 is facilitated by arranging the replacement device 7, the installation and replacement efficiency of the first spring 607 between the mounting block 603 and the rectangular plate 605 is improved, and the use performance of the first spring 607 is further improved.

[0054] After the storage cylinder 83 is filled with lubricant, the connecting pipe 84 connected to the surface of the connecting solid pipe is rotated, the provision work of the lubricant in the circular ring frame 82 is facilitated, the lubricant will flow along the connecting pipe 84 and fall on the inner wall of the circular ring frame 82, when the lubricating block 85 stays at the position between the two convex strips 89, the lubricating block 85 will be driven by the elastic force of the third spring 86 to stay at the position in the inside of the circular ring frame 82, at this time, the closed work of the lubricant can be realized, when the telescopic rod 606 and the telescopic cylinder 601 are subjected to vibration and expansion and contraction, the lubricating block 85 will be extruded by the convex strip 89, at this time, the through hole 87 will move to the inner wall of the circular ring frame 82, a communication structure will be formed between the inner cavity of the circular ring frame 82, the through hole 87 and the reserved hole 88, the lubricant will flow on the surface of the convex strip 89, thereby realizing the lubrication work of the surface of the convex strip 89, and further facilitating the lubrication work between the telescopic cylinder 601 and the telescopic rod 606, the friction during the use of the telescopic structure is reduced as much as possible, the use performance of the telescopic structure is improved, after the telescopic cylinder 601 and the telescopic rod 606 are reset, the through hole 87 will be blocked by the inside of the circular ring frame 82, thereby avoiding the waste of lubricant, by arranging the smearing device 8, only the telescopic rod 606 and the telescopic cylinder 601 are lubricated during the coming and going of vehicles, the use performance of the telescopic structure is improved without wasting lubricant.

[0055] The above merely describes preferred embodiments of the present application, but is not intended to limit the present application to other forms, any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes, and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution content of the present application still belongs to the protection scope of the present application technical solution.

Claims

1. A road-bridge expansion joint for preventing bridge head bumping, comprising two bridges (1), characterized in that: The inner wall of two said bridges (1) is fixedly installed with mounting plates (9), the inner wall of two said mounting plates (9) is slidably connected with support plates (4), two rows of said support plates (4) are rotatably installed on the side close to each other, the upper surface of said support plate (2) is fixedly installed with connecting seats (3), the side close to each other of said connecting seat (3) and bridge (1) is fixedly installed with water belts (5), the surface of said support plate (2) is provided with mounting structures (6), said mounting structure (6) comprises a limiting preformed slot (609), mounting blocks (603), a telescopic rod (606) and a telescopic cylinder (601) with telescopic and buffering effect, a rectangular plate (605) and a first spring (607), a "T" type preformed slot (609) is arranged on the lower surface of the support plate (2), a plurality of said mounting blocks (603) are slidably connected on the inner wall of the preformed slot (609), the lower surface of said telescopic rod (606) is fixedly connected with the mounting block (603), the side wall of said telescopic cylinder (601) is slidably connected with the telescopic rod (606), the end away from the telescopic rod (606) of said rectangular plate (605) is fixedly connected with the telescopic cylinder (601), said first spring (607) is installed on the side close to each other of the mounting block (603) and the rectangular plate (605), the two sides of said mounting block (603) are inclined surface structures, a rectangular slot is arranged on the upper surface of said mounting block (603), a clamping strip (602) is slidably installed on the inner wall of said support plate (2), a plurality of protrusions are uniformly arranged on the side wall of said clamping strip (602), the size of the protrusion on the clamping strip (602) is matched with the size of the rectangular slot, a second spring (608) is fixedly connected on the side close to each other of said support plate (2) and the clamping strip (602), a fixed pin (611) is fixedly connected on the side wall of said clamping strip (602), a support block (612) is rotatably installed on the surface of said fixed pin (611), an arc-shaped strip (610) is fixedly connected on the side wall of said support plate (2), a recess is arranged on the upper surface of said arc-shaped strip (610), a replacing device (7) is arranged on the surface of said rectangular plate (605), said replacing device (7) comprises two sliding strips (71), a fixed rod (73) is fixedly installed on the upper end of two said sliding strips (71), a sleeve (75) is slidably installed on the upper side of said fixed rod (73), a first spring (607) is sleeved on the surface of said sleeve (75) and fixed rod (73), a screw block (77) is fixedly connected on the upper end of said sleeve (75), an auxiliary block (74) is threadedly connected on the surface of said screw block (77), the cross section of said auxiliary block (74) is "V" type structure, a positioning block (76) is fixedly connected on the side wall of said sliding strip (71), a screw rod (72) is threadedly inserted in said positioning block (76), said screw rod (72) is rotatably connected with the inner part of said telescopic cylinder (601), a smearing device (8) is fixedly arranged on the side wall of said rectangular plate (605), said smearing device (8) comprises a fixed frame (81),The upper surface of the rectangular plate (605) is fixedly connected with the fixing frame (81), the side wall of the fixing frame (81) is fixedly connected with a circular ring frame (82), the circular ring frame (82) is a hollow structure, a plurality of lubricating blocks (85) are uniformly and slidably connected in the circular ring frame (82), the end face of the lubricating block (85) is provided with a reserved hole (88), the side wall of the lubricating block (85) is provided with a through hole (87), the through hole (87) and the reserved hole (88) are communicated, the lubricating block (85) and the inner wall of the circular ring frame (82) are fixedly installed with third springs (86) on the side close to each other, the circular ring frame (82) is sleeved on the outer surface of the telescopic rod (606), the side wall of the telescopic rod (606) is uniformly and fixedly connected with a plurality of convex stripes (89), and the sides close to each other of the two convex stripes (89) are both inclined surface structures.

2. The road-bridge transition structure according to claim 1, wherein: A plurality of the rectangular plates (605) are fixedly connected with ropes (604) on one side close to each other, and two rollers (613) are rotatably installed on the inner wall of the rectangular plate (605).

3. The road-bridge transition structure according to claim 2, wherein: The side wall of the circular ring frame (82) is communicated with a connecting pipe (84), one end of the connecting pipe (84) away from the circular ring frame (82) is threadedly connected with a storage cylinder (83).

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