Anti-falling device for large-span bridge construction

Abstract

The utility model discloses a large-span bridge construction anti-falling device which comprises a bridge structure, a connecting and positioning mechanism, a protection mechanism and a buffering mechanism, and sliding grooves are formed in the two sides of the bridge structure in the length direction; the connecting and positioning mechanism comprises a connecting part movably installed in the sliding groove and a positioning part fixed to the connecting part, and the positioning part is arranged outside the sliding groove and detachably and fixedly connected with the bridge structure. The protection mechanism comprises protection parts fixed to the positioning parts and clamping parts installed on the protection parts, and the clamping parts are arranged on the two sides of the protection parts and used for connecting the two adjacent protection parts. The buffering mechanism is arranged at the bottom of the protection part, fixedly connected with the protection part and the positioning part and used for providing buffering for the protection part. According to the device, during large-span bridge construction, personnel falling can be effectively prevented, the influence of impact force on the structure can be effectively reduced through the buffering mechanism, and the safety and reliability of protection are improved; and the position of the device is convenient to adjust, and plural connection is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of large span bridge construction protection, in particular to a large span bridge construction anti-falling device. BACKGROUND

[0002] Large span bridge usually refers to the bridge with span exceeding a certain length, which needs special design and construction technology to support and ensure the stability and safety of its structure. During the construction of large span bridge, the concrete pier placed by early pouring or prefabricated assembly is paved with bridge deck upward, after the bridge deck is paved, workers need to carry out bridge deck connection, structure fixation, cable and other infrastructure operation, which usually needs to set up corresponding working platform to assist workers to carry out construction operation on the side of highway bridge. For example, the Chinese utility model patent with publication number CN210552078U discloses a super-high-strength concrete prefabricated beam side mold temporary construction platform, which comprises a construction pedal, a horizontal angle steel for supporting the construction pedal and a limiting short steel bar connected with the horizontal angle steel, the right side of the horizontal angle steel is connected with a side mold stand column, and the limiting short steel bar is used to control the construction pedal from moving to the leftmost side of the horizontal angle steel. The construction platform of the utility model increases the operation space of workers, which is convenient for workers to carry out bridge construction operation. During the operation, the bridge deck itself is in an open working environment, and workers may fall or other accidents may occur during the operation on the edge of the bridge.

[0003] At present, during the construction of large span bridge, protective structures such as protective fences installed on both sides of the bridge or protective nets and protective plates added on the side of the bridge are usually used for support and protection. However, if the installation position of the protective structure deviates from the position of the operation personnel, the protective effect cannot be achieved, and when the position of the protective structure is adjusted, the protective structure needs to be removed and reinstalled, which is low in efficiency and is not conducive to operation, so the protective structure is usually connected in multiple to adapt to the continuous operation of large span bridge construction. However, the connection and installation between the protective structures are mostly complex, and relevant personnel have difficulty in installation and disassembly, which wastes a lot of time and is time-consuming and labor-intensive. At the same time, due to the need of construction, the protective device is usually at a certain height from the bridge deck, and the instantaneous impact force generated during the falling of the personnel is large, the rigid impact brings great reaction force to the human body, and the rigid impact also causes damage to the protective device itself, thereby causing the failure of the protective structure, which cannot effectively achieve protection, and during the construction process, small stones fall from the bridge deck to the area below, which has certain safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of large span bridge construction anti-falling device to solve the technical problems of inconvenient position adjustment of protective structure in prior art, low safety.

[0005] According to one aspect of the utility model, provide a kind of large-span bridge construction anti-falling device, including bridge structure, connecting positioning mechanism and protection mechanism, the length direction is provided with chute in the both sides of bridge structure;Connecting positioning mechanism includes the connecting portion that is movably installed in chute and the positioning portion that is fixed on connecting portion, and the positioning portion is arranged outside chute and is detachably fixedly connected with bridge structure;Protection mechanism includes the protection portion that is fixed on positioning portion and the clamping portion that is installed on protection portion, and the clamping portion is arranged on the both sides of protection portion, for connecting adjacent two protection portions;Buffer mechanism is arranged at the bottom of protection portion and is fixedly connected with protection portion and positioning portion, for providing buffer for protection portion.

[0006] Further, the connecting portion includes a connecting block movably disposed in the chute, a pulley member, and a transmission member for driving the pulley member to move in the chute.

[0007] Further, the pulley member includes rollers disposed on both sides of the connecting block and an axle for connecting the two rollers, and the axle is movably disposed in the first installation groove.

[0008] Further, the positioning portion includes a positioning plate fixed to the connecting block and a fixing member for fixing the positioning plate to the bridge structure, and the positioning plate and the bridge structure are provided with threaded holes for the fixing member to pass through.

[0009] Further, the protection portion includes a first protective frame fixed to the positioning portion, a second protective frame movably installed in the first protective frame, and a protective net installed between the first protective frame and the second protective frame, and the first protective frame and the second protective frame are provided with an extension adjustment member.

[0010] Further, the first protective frame is provided with a first adjustment groove at one end away from the positioning portion for the second protective frame to movably pass through, and the end of the second protective frame is provided with a first limiting block for preventing the second protective frame from being pulled out of the first adjustment groove.

[0011] Further, the extension adjustment member includes a second motor fixed in the first adjustment groove and a threaded rod fixed to the output end of the second motor, the second protective frame is provided with a second adjustment groove corresponding to the first adjustment groove, the threaded rod is movably disposed in the second adjustment groove and is threadedly connected with the first limiting block, and the end of the threaded rod away from the second motor is provided with a second limiting block for preventing the threaded rod from being pulled out of the second adjustment groove.

[0012] Further, the clamping part comprises a clamping block fixed on the first protection frame and a clamping groove opened in the first protection frame, the clamping block and the clamping groove are respectively arranged on two sides of the first protection frame and are matched with each other, a clamping rod is movably arranged in the first protection frame and faces the clamping groove, a first limiting groove for clamping the clamping rod is opened in the clamping block; an elastic member is mounted on the clamping rod, a second limiting groove for accommodating the elastic member is opened in the first protection frame, the elastic member comprises a stop block fixed on the clamping rod and a limiting spring fixed on the stop block, and one end of the limiting spring away from the stop block is fixed in the second limiting groove.

[0013] Further, the buffering mechanism comprises a first supporting rod fixed on the positioning plate, a second supporting rod movably arranged in the first supporting rod, a first buffering member mounted in the first supporting rod and a second buffering member mounted outside the first supporting rod, and one end of the second supporting rod away from the first supporting rod is fixed on the bottom of the first protection frame.

[0014] Further, the first buffering member comprises a damper fixed in the first supporting rod and a first spring arranged between the damper and the second supporting rod, and the second supporting rod is fixedly connected with the first spring.

[0015] The second buffering member comprises a first connecting rod fixed outside the first supporting rod, a second connecting rod fixed outside the second supporting rod and a second spring arranged between the first connecting rod and the second connecting rod, and two ends of the second spring are fixedly connected with the first connecting rod and the second connecting rod respectively.

[0016] The utility model has the following beneficial effects:

[0017] The utility model discloses a large -span bridge construction anti -falling device, through setting up the slide groove at the both sides of bridge structure, make the protection mechanism can through the movement of connecting positioning mechanism in the slide groove to realize the adjustment of position, and high flexibility does not need to dismantle and reinstallation, save time and toil, the efficiency of position adjustment is higher, also avoided the security risk of falling after dismantling, and will not influence construction operation, simultaneously, two adjacent protection mechanisms can be close to each other through moving in the slide groove, and then through setting up the clamping portion of protection mechanism makes two adjacent protection mechanisms carry out clamping connection, can effectively increase the protection area to adapt the continuous operation of large -span bridge construction, and the protection effect is good, and the security is high, and the setting of clamping portion can make the connection between protection mechanisms simple and fast, and the efficiency is high, through setting up the buffer mechanism at the connecting place of protection mechanism and connecting positioning mechanism, can make protection mechanism realize buffering effect after being impacted, effectively reduce the influence of instantaneous impact force to protection mechanism connecting place, avoid the damage of protection mechanism caused by excessive impact force, guarantee the stability of structure, improve the reliability of protection.

[0018] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. Below, referring to the drawings, the utility model will be further explained in detail. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings that form a part of this application are intended to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0020] Figure 1 It is the structure schematic diagram of large -span bridge construction anti -falling device of the utility model preferred embodiment;

[0021] Figure 2 It is the sectional view of large -span bridge construction anti -falling device of the utility model preferred embodiment;

[0022] Figure 3 It is the structure schematic diagram of connecting portion of the utility model preferred embodiment;

[0023] Figure 4 It is the local enlarged view of transmission piece of the utility model preferred embodiment;

[0024] Figure 5 It is the connecting schematic diagram of clamping portion of the utility model preferred embodiment.

[0025] Legend:

[0026] 10, bridge structure; 11, chute; 20, connecting positioning mechanism; 21, connecting part; 211, connecting block; 2111, limiting piece; 212, pulley piece; 2121, roller; 2122, axle; 213, transmission piece; 2131, first motor; 2132, driving wheel; 2133, driven wheel; 2134, transmission belt; 22, positioning part; 221, positioning plate; 222, fixing piece; 30, protection mechanism; 31, protection part; 311, first protection frame; 3111, first adjusting groove; 3112, second limiting groove; 312, second protection frame; 3121, first limiting block; 3122, second adjusting groove; 313, protection net; 314, telescopic adjusting piece; 3141, second motor; 3142, threaded rod; 3143, second limiting block; 32, clamping part; 321, clamping block; 3211, first limiting groove; 322, clamping groove; 323, clamping rod; 324, stop block; 325, limiting spring; 40, buffer mechanism; 41, first supporting rod; 42, second supporting rod; 43, first buffer piece; 431, damper; 432, first spring; 44, second buffer piece; 441, first connecting rod; 442, second connecting rod; 443, second spring. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0028] As Figure 1 and Figure 2As shown, the large-span bridge construction anti-falling device of the embodiment comprises a bridge structure 10, a connecting and positioning mechanism 20, a protection mechanism 30 and a buffer mechanism 40, the bridge structure 10 is provided with a sliding groove 11 in the length direction on both sides, the connecting and positioning mechanism 20 is movably arranged in the sliding groove 11 and is detachably fixedly connected with the bridge structure 10, the protection mechanism 30 is fixed on the connecting and positioning mechanism 20 and is horizontally arranged, so that the protection mechanism 30 can slide in the sliding groove 11 through the connecting and positioning mechanism 20 to realize position adjustment, and the buffer mechanism 40 is arranged below the protection mechanism 30 and is installed at the corner connecting position of the protection mechanism 30 and the connecting and positioning mechanism 20 to support and provide buffer for the protection mechanism 30. Specifically, the connecting and positioning mechanism 20 comprises a connecting part 21 and a positioning part 22, the connecting part 21 is movably installed in the sliding groove 11, one end of the connecting part 21 is limited inside the sliding groove 11 to prevent it from being taken out of the sliding groove 11, so as to avoid that the device loses the protection function, the other end of the connecting part 21 is fixedly connected with the positioning part 22 and extends out of the sliding groove 11, the positioning part 22 is arranged outside the sliding groove 11 and is in contact with the side surface of the bridge structure 10, and the positioning part 22 is detachably fixedly connected with the bridge structure 10, so that it can be positioned at any position of the bridge structure 10, so that when the device is deviated from the construction operation area during the large-span bridge construction process, the positioning part 22 can be detached from the bridge structure 10 to be loosened, the connecting part 21 is controlled to move in the sliding groove 11, is moved to a suitable position, and then the positioning part 22 is fixed on the bridge structure 10 again, so that the position adjustment is completed, the flexibility is high, the operation is simple and convenient, the device can be avoided to be detached and reinstalled through the limiting of the sliding groove 11, time and labor are saved, the position adjustment efficiency is high, the safety hidden danger of falling after being detached is avoided, and the construction operation is not affected; the protection mechanism 30 comprises a protection part 31 and a clamping part 32, the protection part 31 is fixed on the positioning part 22, and the clamping part 32 is arranged on both sides of the protection part 31 and is used for quickly connecting a plurality of adjacent protection parts 31 through clamping, adjacent protection mechanisms 30 can be moved in the sliding groove 11 through the connecting and positioning mechanism 20 to realize mutual approach, and then the adjacent protection mechanisms 30 are clamped and connected through the clamping part 32, the clamping operation is simple and fast, the installation speed is effectively improved, the protection area of the clamped protection mechanism is large, the continuous operation of the large-span bridge construction can be adapted, the protection effect is good, and the safety is high; the buffer mechanism 40 is arranged at an inclined position at the end of the protection part 31 and is installed at the corner connecting position of the protection part 31 and the positioning part 22, both ends of the buffer mechanism 40 are fixedly connected with the protection part 31 and the positioning part 22 respectively, and the buffer mechanism 40 is used for supporting the protection part 31 and providing buffer for the protection part 31, so that the protection part 31 can realize the buffer effect after being impacted, the influence of the instantaneous impact force on the connecting position of the protection part 31 and the positioning part 22 is effectively reduced, the protection part 31 is prevented from being damaged by excessive impact force, the stability of the structure is ensured, and the safety and reliability of the protection are improved.

[0029] As Figure 1 , Figure 3 and Figure 4 shown, the connecting part 21 is movably mounted in the sliding groove 11 and is limited by the sliding groove 11, the connecting part 21 comprises a connecting block 211, a pulley member 212 and a transmission member 213, the connecting block 211 is movably arranged in the sliding groove 11, one end of the connecting block 211 is arranged in the sliding groove 11 and is connected with the pulley member 212 through the transmission member 213, the other end of the connecting block 211 extends out of the sliding groove 11 and is fixedly connected with the positioning part 22, the transmission member 213 is fixedly connected with the pulley member 212 so that the transmission member 213 transmits the driving force to the pulley member 212 to make the pulley member 212 slide in the sliding groove 11, so that the connecting block 211 moves in the sliding groove 11 through the sliding of the pulley member 212, and in turn drives the positioning part 22 to move to adjust the position. Preferably, the end of the connecting block 211 away from the positioning part 22 is provided with a limiting member 2111, and a track for accommodating the limiting member 2111 is arranged in the sliding groove 11 along the length direction, the limiting member 2111 is movably mounted in the track and is limited by the track, so that the connecting block 211 can be limited in the sliding groove 11 by the limiting member 2111 to prevent it from coming out of the sliding groove 11, and at the same time, the connecting block 211 is prevented from shaking to keep stable when moving, and the movement of the pulley member 212 is guided to increase the stability of the pulley member 212 sliding in the sliding groove 11. Specifically, the connecting block 211 is provided with a first mounting groove for movably mounting the pulley member 212 and a second mounting groove for fixedly mounting the transmission member 213, the first mounting groove is arranged along the height direction of the sliding groove 11, and the second mounting groove is horizontally arranged and communicates with the first mounting groove. The pulley member 212 comprises an axle 2122 and rollers 2121 fixedly mounted on both ends of the axle 2122, the rollers 2121 are arranged on both sides of the connecting block 211, and the axle 2122 is movably arranged in the first mounting groove and is fixedly connected with the transmission member 213; the transmission member 213 comprises a first motor 2131, a driving wheel 2132, a driven wheel 2133 and a transmission belt 2134, the first motor 2131 is fixedly arranged in the second mounting groove, the driving wheel 2132 is fixedly arranged on the output end of the first motor 2131 to rotate under the drive of the first motor 2131, the driven wheel 2133 is driven by the transmission belt 2134 to transmit the rotating force to the driven wheel 2133 under the drive of the driving wheel 2132, and the driven wheel 2133 is sleeved on the axle 2122 and is fixedly connected with the axle 2122, so that the driven wheel 2133 can drive the axle 2122 to rotate synchronously to drive the rollers 2121 to slide in the sliding groove 11. The length of the axle 2122 is greater than the slot width of the sliding groove 11, so that the rollers 2121 are limited in the sliding groove 11 to prevent them from coming out of the sliding groove 11 and causing the device to fall and lose the protection effect.

[0030] As Figure 1 and Figure 2As shown, the positioning part 22 comprises a positioning plate 221 and a fixing member 222, the positioning plate 221 is arranged on the side of the bridge structure 10, and the side of the positioning plate 221 facing the bridge structure 10 is fixedly connected with the connecting block 211, and the side of the positioning plate 221 away from the bridge structure 10 is fixedly connected with the protection part 31, and the fixing member 222 is arranged on the positioning plate 221 and is used for fixing the positioning plate 221 on the bridge structure 10. Preferably, a plurality of fixing members 222 are arranged along the length direction of the positioning plate 221 to enhance the fastening effect; alternatively, the fixing member 222 is arranged above or below the protection part 31, or is arranged above and below the protection part 31. The positioning plate 221 and the bridge structure 10 are provided with threaded holes corresponding to each other, and the fixing member 222 is sequentially arranged in the positioning plate 221 and the bridge structure 10 through the threaded holes, so as to detachably fix the positioning plate 221 on the bridge structure 10. Alternatively, the fixing member 222 is a bolt. Alternatively, the fixing member 222 comprises a fixing plate and a screw rod fixed on the fixing plate, and the screw rod is sequentially arranged in the threaded holes of the positioning plate 221 and the bridge structure 10 to fix the positioning plate 221. In use, when the position of the device needs to be adjusted, the fixing member 222 is unscrewed to release the fastening and limiting of the positioning plate 221 by the bridge structure 10, so as to control the movement of the connecting part 21 in the chute 11, and when the connecting part 21 is moved to a suitable position, the fixing member 222 is tightened or screwed to fix the positioning plate 221 on the bridge structure 10, so that the position adjustment of the device is realized, and the connecting part 21 and the positioning plate 221 do not need to be disassembled from the bridge structure 10 and then reassembled, so that the position adjustment is simple, fast and flexible, the work efficiency is greatly improved, the safety hazard of falling during disassembly is avoided, and the construction work is not affected.

[0031] As Figure 1 and Figure 2As shown, the protection part 31 comprises a first protection frame 311, a second protection frame 312 and a protection net 313. The first protection frame 311 is fixed on the positioning part 22, the second protection frame 312 is movably installed in the first protection frame 311, and the protection net 313 is arranged in the space enclosed by the first protection frame 311 and the second protection frame 312 and is fixedly connected with the first protection frame 311 and the second protection frame 312 to receive the falling personnel or objects for protection. The second protection frame 312 is movably arranged in the first protection frame 311, and the first protection frame 311 and the second protection frame 312 are provided with a telescopic adjusting member 314, so that the second protection frame 312 can be controlled to extend away from the bridge structure 10 to increase the area of the protection net 313 and enhance the protection effect. Optionally, the protection net 313 is a flexible member. Optionally, the protection part 31 further comprises a protective railing arranged around the protection net 313, which is fixedly installed on the first protection frame 311 and the second protection frame 312 to prevent the workers from falling from the protection net 313, further increasing the protection effect and improving the safety.

[0032] As Figure 2As shown, the first guard frame 311 is provided with a first adjusting slot 3111 at one end away from the positioning plate 221, for the second guard frame 312 to movably pass through, and the second guard frame 312 is provided with a first limiting block 3121 at the end, which is arranged in the first adjusting slot 3111, for preventing the second guard frame 312 from being pulled out of the first adjusting slot 3111, so that the second guard frame 312 can adjust the area of the guard net 313 by moving in the first adjusting slot 3111, further enhancing the protection effect and flexibility. The telescopic adjusting frame is arranged in the first adjusting slot 3111 between the first guard frame 311 and the second guard frame 312, including a second motor 3141 and a threaded rod 3142, the second motor 3141 is fixed in the first adjusting slot 3111, and the threaded rod 3142 is fixed at the output end of the second motor 3141, so that the threaded rod 3142 can be rotated by the driving of the second motor 3141, the second guard frame 312 is provided with a second adjusting slot 3122 corresponding to the first adjusting slot 3111, the threaded rod 3142 movably passes through the second adjusting slot 3122 and is screwed with the first limiting block 3121, and the end of the threaded rod 3142 away from the second motor 3141 is provided with a second limiting block 3143, for preventing the threaded rod 3142 from being pulled out of the second adjusting slot 3122. In use, the second motor 3141 is started to make the threaded rod 3142 rotate forward, the second limiting block 3143 screwed with the threaded rod 3142 moves relatively with the threaded rod 3142 under the rotation of the threaded rod 3142, and gradually moves along the axial direction of the threaded rod 3142 towards the direction away from the first guard frame 311, so that the distance between the second guard frame 312 and the first guard frame 311 gradually increases to increase the protection area of the guard net 313. When it is needed to retract the guard net 313, the threaded rod 3142 can be reversely rotated by controlling the second motor 3141.

[0033] As Figure 1 and Figure 5As shown, the clamping part 32 includes a clamping block 321 fixed to the first guard frame 311 and a clamping groove 322 opened in the first guard frame 311, and the clamping block 321 and the clamping groove 322 are respectively arranged on both sides of the first guard frame 311 and are matched with each other, so that the clamping block 321 can be clamped and positioned with the clamping groove 322 on the adjacent first guard frame 311, realizing the connection of the two adjacent guard mechanisms 30. Through the connection of the clamping block 321 and the clamping groove 322, the connection of the two adjacent guard mechanisms 30 can be simple, fast and efficient. The clamping rod 323 is movably arranged in the first guard frame 311 towards the clamping groove 322, and the first limiting groove 3211 for clamping the clamping rod 323 is opened in the clamping block 321; the elastic member is installed on the clamping rod 323, and the second limiting groove 3112 for accommodating the elastic member is opened in the first guard frame 311, and the elastic member includes the stop block 324 fixed to the clamping rod 323 and the limiting spring 325 fixed to the stop block 324, and one end of the limiting spring 325 away from the stop block 324 is fixed in the second limiting groove 3112. When it is needed to connect the two adjacent guard mechanisms 30, the first motor 2131 is started to drive the connecting and positioning mechanism 20 to move in the sliding groove 11, so that the two adjacent guard mechanisms 30 are close to each other, and then the clamping rod 323 on one of the guard mechanisms 30 is pulled up to leave space below the clamping rod 323 for the clamping block 321 on the other guard mechanism 30 to be inserted, at this time, the limiting spring 325 in the second limiting groove 3112 is in a compressed state, and after the clamping block 321 is inserted into the clamping groove 322, the clamping rod 323 is inserted into the first limiting groove 3211 in the clamping block 321, at this time, the limiting spring 325 is reset to the natural state, and the clamping rod 323 is stably placed in the first limiting groove 3211 of the clamping block 321 through the elastic force of the limiting spring 325 to limit the clamping block 321, so that the clamping block 321 and the clamping groove 322 are stably connected, avoiding disconnection and connection failure.

[0034] As Figure 2As shown, the buffer mechanism 40 is arranged obliquely below the protection mechanism 30 and is installed at the corner where the first protection frame 311 and the positioning plate 221 are connected, for supporting the protection mechanism 30 and providing a buffer force. Specifically, the buffer mechanism 40 includes a first support rod 41 fixed to the positioning plate 221, a second support rod 42 movably arranged inside the first support rod 41, a first buffer 43 installed inside the first support rod 41, and a second buffer 44 installed outside the first support rod 41, and the end of the second support rod 42 away from the first support rod 41 is fixed to the bottom of the first protection frame 311. The first support rod 41 and the second support rod 42 are coaxially arranged for supporting the first protection mechanism 30 and strengthening the connection force at the corner of the positioning plate 221 and the first protection mechanism 30, so that the protection mechanism 30 is more stable and reliable. The first buffer 43 and the second buffer 44 provide two-stage buffering for the protection mechanism 30, so that the protection mechanism 30 can achieve a buffering effect after being impacted, effectively reducing the influence of instantaneous impact force on the connection of the protection mechanism 30, avoiding damage to the protection mechanism 30 caused by excessive impact force, and ensuring the stability of the structure.

[0035] As shown in Figure 2 The first buffer 43 includes a damper 431 fixed inside the first support rod 41 and a first spring 432 arranged between the damper 431 and the second support rod 42, and the second support rod 42 is fixedly connected with the first spring 432, so that when the first protection frame 311 is impacted, the second support rod 42 can transmit the impact force to the first spring 432, and the first spring 432 provides a buffer force to the first protection frame 311 through the elastic action to reduce the influence of the impact force on the first protection frame 311 and ensure the stability of the structure; the second buffer 44 includes a first connecting rod 441 fixed outside the first support rod 41, a second connecting rod 442 fixed outside the second support rod 42, and a second spring 443 arranged between the first connecting rod 441 and the second connecting rod 442, and the two ends of the second spring 443 are fixedly connected with the first connecting rod 441 and the second connecting rod 442, respectively, so that when the first protection frame 311 is impacted, the second support rod 42 can transmit the impact force to the second spring 443, and the second spring 443 provides a buffer force to the first protection frame 311 through the elastic action to reduce the influence of the impact force on the first protection frame 311 and ensure the stability of the structure. The first spring 432 and the second spring 443 provide two-stage elastic buffering for the protection mechanism 30, greatly reducing the impact of falling objects on the protection mechanism 30 and improving the service life and safety of the device.

[0036] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A large-span bridge construction anti-falling device, characterized in that, The device comprises a connecting positioning mechanism (20), a protection mechanism (30), and a buffer mechanism (40). The connecting positioning mechanism (20) comprises a connecting part (21) and a positioning part (22) fixed to the connecting part (21), the connecting part is used to be movably matched with a sliding groove (11) on a bridge structure (10), and the positioning part (22) is arranged outside the sliding groove (11) and is detachably fixedly connected with the bridge structure (10). The protection mechanism (30) comprises a protection part (31) fixed to the positioning part (22) and a clamping part (32) installed on the protection part (31), the clamping part (32) is arranged on both sides of the protection part (31) and is used to connect two adjacent protection parts (31). The buffer mechanism (40) is arranged at the bottom of the protection part (31) and is fixedly connected with the protection part (31) and the positioning part (22) and is used to provide buffering for the protection part (31).

2. The anti-falling device for long-span bridge construction according to claim 1, wherein the connecting part (21) comprises a connecting block (211) movably arranged in the sliding groove (11), a pulley member (212), and a transmission member (213) used to drive the pulley member (212) to move in the sliding groove (11).

3. The anti-falling device for long-span bridge construction according to claim 2, wherein the pulley member (212) comprises rollers (2121) arranged on both sides of the connecting block (211) and an axle (2122) used to connect the two rollers (2121), the axle (2122) is movably arranged in the first installation groove.

4. The anti-falling device for long-span bridge construction according to claim 2, wherein the positioning part (22) comprises a positioning plate (221) fixed to the connecting block (211) and a fixing member (222) used to fix the positioning plate (221) to the bridge structure (10), the positioning plate (221) and the bridge structure (10) are provided with corresponding threaded holes for the fixing member (222) to pass through.

5. The anti-falling device for long-span bridge construction according to claim 4, wherein ​ ​ ​ ​ The protection part (31) comprises a first protection frame (311) fixed to the positioning plate (221), a second protection frame (312) movably installed in the first protection frame (311), and a protection net (313) installed between the first protection frame (311) and the second protection frame (312), A telescopic adjusting piece (314) is arranged between the first protection frame (311) and the second protection frame (312). 6.The anti-falling device for long-span bridge construction of claim 5, wherein A first adjusting groove (3111) is formed in an end of the first protection frame (311) away from the positioning part (22) and used for movably penetrating the second protection frame (312), and an end of the second protection frame (312) is provided with a first limiting block (3121) for preventing the second protection frame (312) from being pulled out of the first adjusting groove (3111). 7.The anti-falling device for long-span bridge construction of claim 6, wherein The telescopic adjusting piece (314) comprises a second motor (3141) fixed in the first adjusting groove (3111) and a threaded rod (3142) fixed to an output end of the second motor (3141), a second adjusting groove (3122) corresponding to the first adjusting groove (3111) is formed in the second protection frame (312), the threaded rod (3142) movably penetrates the second adjusting groove (3122) and is threadedly connected with the first limiting block (3121), An end of the threaded rod (3142) away from the second motor (3141) is provided with a second limiting block (3143) for preventing the threaded rod (3142) from being pulled out of the second adjusting groove (3122). 8.The anti-falling device for long-span bridge construction of claim 5, wherein The clamping part (32) comprises a clamping block (321) fixed to the first protection frame (311) and a clamping groove (322) formed in the first protection frame (311), the clamping block (321) and the clamping groove (322) are respectively arranged on two sides of the first protection frame (311) and are adapted to each other, a clamping rod (323) movably penetrates the first protection frame (311) towards the clamping groove (322), and a first limiting groove (3211) for clamping the clamping rod (323) is formed in the clamping block (321); The clamping rod (323) is provided with an elastic piece, the first protection frame (311) is provided with a second limiting groove (3112) for accommodating the elastic piece, and the elastic piece comprises a stop block (324) fixed to the clamping rod (323) and a limiting spring (325) fixed to the stop block (324), and an end of the limiting spring (325) away from the stop block (324) is fixed in the second limiting groove (3112). 9.The anti-falling device for long-span bridge construction of claim 5, wherein The buffering mechanism (40) comprises a first supporting rod (41) fixed on the positioning plate (221), a second supporting rod (42) movably arranged inside the first supporting rod (41), a first buffering piece (43) installed inside the first supporting rod (41), and a second buffering piece (44) installed outside the first supporting rod (41), and one end of the second supporting rod (42) away from the first supporting rod (41) is fixed to the bottom of the first protective frame (311).

10. The anti-falling device for long-span bridge construction of claim 9, wherein, The first buffering piece (43) comprises a damper (431) fixed inside the first supporting rod (41) and a first spring (432) arranged between the damper (431) and the second supporting rod (42), and the second supporting rod (42) is fixedly connected with the first spring (432); The second buffering piece (44) comprises a first connecting rod (441) fixed outside the first supporting rod (41), a second connecting rod (442) fixed outside the second supporting rod (42), and a second spring (443) arranged between the first connecting rod (441) and the second connecting rod (442), and two ends of the second spring (443) are fixedly connected with the first connecting rod (441) and the second connecting rod (442) respectively.

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