Bridge anti-collision guardrail object hoisting device

Abstract

The utility model relates to the technical field of bridge anti-collision guardrail construction, in particular to an object hoisting device for a bridge anti-collision guardrail. The object hoisting device for the anti-collision guardrail of the bridge comprises a bridge floor, an anti-collision guardrail template and a support body, the anti-collision guardrail template is installed on the side edge of the bridge floor, the support body is close to the side edge of the bridge floor and used for installing the anti-collision guardrail template, and the support body is of a cubic frame structure and provides support for the upper portion. A distance adjusting device is arranged at the top of the support body, a pair of hoisting devices is connected to the top of the distance adjusting device in a sliding mode, the hoisting devices longitudinally slide along the bridge floor, and the hoisting devices are in mirror symmetry about the center face of the support body, are opposite in sliding direction and equal in sliding distance and are arranged in a long strip shape. The two ends of the hoisting device are overhung to the outer side of the support body by a certain distance, one end of the hoisting device extends to the edge of the bridge floor by a certain distance during operation, a balancing weight is hung at the end, away from the edge of the bridge floor, of the hoisting device, and operation objects are hoisted at the end, close to the edge of the bridge floor, of the hoisting device; a material storage platform is arranged at the position which is a certain distance away from the walking braking device upwards. The lifting device has the advantages that stress on one lifting side is balanced through the balancing weight, safety is improved, the lifting device is simple in structure and capable of moving freely, the required operation space is small, and meanwhile the lifting height and distance can be adjusted more effectively through the adjusting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of bridge crash barrier construction technology, specifically a bridge crash barrier object hoisting device. Background Technology

[0002] Detailed Explanation of Bridge Crash Barrier Construction Process: Bridge crash barriers are crucial facilities for protecting bridges and ensuring traffic safety. They prevent vehicles from veering off the road and reduce traffic accidents. The construction steps for bridge crash barriers include measurement and preparation, steel component fabrication, foundation treatment, installation of crossbeams, installation of guardrail panels, calibration and adjustment, and anti-corrosion treatment and painting. These barriers feature high strength and impact resistance, long lifespan and low maintenance costs, aesthetic appeal and environmental compatibility, and applicability to various scenarios.

[0003] Because bridge crash barriers require steel formwork for construction and need to be hoisted to the outside of the bridge deck, current methods often use cranes for installation. However, cranes require a certain amount of working space, and during bridge construction, there are often overlapping operations, making the workspace frequently limited. Furthermore, using cranes is costly, and adjusting the crane's position takes considerable time, impacting the construction schedule. Therefore, there is a need to design a flexible, simple, safe, and efficient crash barrier installation and hoisting device. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a hoisting device for bridge crash barriers. It solves the problems of the common practice of using cranes for hoisting bridge crash barriers, which requires a certain amount of working space. Furthermore, bridge construction often involves overlapping operations, making the working space frequently limited. Additionally, using cranes is costly, and adjusting the crane position requires significant time, impacting the construction schedule.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: The bridge anti-collision guardrail object hoisting device includes: a bridge deck, an anti-collision guardrail template, and a support body. The anti-collision guardrail template is installed on the side edge of the bridge deck. The support body is close to the side edge of the bridge deck and is used to install the anti-collision guardrail template. The support body is a cubic frame structure that provides support for the upper part. A spacing adjustment device is provided at the top. A pair of hoisting devices are slidably connected to the top of the spacing adjustment device. The hoisting devices slide longitudinally along the bridge deck, and the pair of hoisting devices are mirror-symmetrical about the center plane of the support body, with opposite sliding directions and equal sliding distances. The hoisting device is long and narrow, with both ends cantilevered to a certain distance outside the support body. During operation, one end extends to a certain distance to the edge of the bridge deck. A counterweight is suspended at the end of the hoisting device away from the edge of the bridge deck, and the work object is hoisted at the end close to the edge of the bridge deck. A travel braking device is provided at the bottom of the four corners of the rectangular frame of the support body, and a material storage platform is provided at a certain distance upward from the travel braking device.

[0006] The beneficial effects of this utility model are: the counterweight balances the force on one side of the hoisting, improving safety; the device has a simple structure and can move freely, requiring little working space; and the adjustment mechanism can more effectively adjust the hoisting height and distance.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the support body is formed by fixed connection of steel sections to form a steel frame. The steel frame consists of a vertical support system composed of four uprights. The four uprights are connected by horizontal steel sections at a certain distance from the bottom to form a rectangular frame. Three H-shaped horizontal steel sections are fixed to the top of the steel frame. The length direction of the H-shaped horizontal steel sections is parallel to the longitudinal direction of the bridge deck. Sliding rails are welded on the three horizontal steel sections of the steel frame.

[0009] Furthermore, the spacing adjustment device is slidably connected to the upper surface of the sliding track. The spacing adjustment device consists of a gear drive assembly, a slider, and two symmetrical guide devices. The gear drive assembly is set on a sliding track between the two guide devices. The gear drive assembly is equipped with a lead screw, with bearing seats at both ends of the lead screw. The lead screw passes through the two sliders. The hoisting device is fixed to the upper surface of each of the two sliders. The center point of the hoisting device is set on the slider. A mounting plate is set at one end of the gear drive assembly. A gear set with a driving gear and a driven gear is set on the mounting plate opposite the lead screw. The lead screw passes through the mounting plate and connects to the driven gear. A hand crank is connected to the center of the driving gear. Each of the two sets of guide devices is equipped with a guide rod and two sliders. The sliders on the two sets of guide devices are driven members, and the three sliders are aligned in a straight line with the slider on the gear drive assembly.

[0010] The advantage of adopting the above-mentioned further solution is that, by adjusting the device, guardrail templates of different shapes can be hoisted more flexibly, and the process is more stable and precise.

[0011] In a further embodiment, the hoisting device includes a bevel gear drive assembly and a hook assembly. Two sets of hoisting devices are each equipped with two collinear lead screws, separated by a certain distance. The bevel gear drive assembly is positioned at the midpoint of this distance. The two lead screws are slidably connected to the hook assemblies, driving the two hook assemblies to slide in opposite directions over the same distance. The hoisting device also includes a working steel beam, which is fixedly connected to the slider at the bottom of the hoisting device, providing support for the hoisting device.

[0012] The advantage of adopting the above scheme is that the adjustment is more precise and less labor-intensive through bevel gear drive.

[0013] Furthermore, the bevel gear drive assembly includes a driven bevel gear, a driving bevel gear, a driving spur gear, and a driven spur gear. Bearing seats are provided at certain distances from the ends of the two lead screws of the bevel gear drive assembly. The relatively close ends of the two lead screws are connected to the driven bevel gears. The two driven bevel gears mesh with the driving bevel gear. A rotating rod is fixed at the center of the driving bevel gear. A mounting plate is provided on the back of the driving bevel gear. The rotating rod of the driving bevel gear passes through the mounting plate and connects to the driven spur gear. The driven spur gear meshes with the driving spur gear. A rotating rod is provided on the back of the driving spur gear, and a hand crank is provided at the other end of the rotating rod.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that the cooperation of the large and small gear sets makes manual input less labor-intensive and also makes it more effective in improving the accuracy of hoisting.

[0015] Furthermore, the hook assembly includes a hook mounting base and a hand-operated hoist. The hook mounting base is a frame formed by welding three steel plates, one of which is horizontally arranged and the other two are vertically arranged to form a certain space. Two sliders are slidably connected to the upper surface of the sliding rail. The two sliders are mirror-symmetrical and their upper surfaces are fixedly connected to the hook mounting base. The hook mounting base extends vertically to a certain distance below the top crossbeam of the support body. The horizontal width of the hook mounting base is greater than the width of the sliding rail. A horizontal bar is provided at a certain distance upward from the bottom of the two vertical plates of the hook mounting base, and the horizontal bar passes through the hand-operated hoist.

[0016] The advantage of adopting the above-mentioned further solution is that using a hand chain hoist as a hook facilitates manual operation.

[0017] Furthermore, the counterweight is the same as the anti-collision guardrail template that is hoisted.

[0018] The technical effects and advantages of this utility model are: the device has a simple structure and can move freely, requiring little working space, and the lifting height and distance can be adjusted more effectively through the adjustment mechanism. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the installation operation of the guardrail according to this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the hoisting device of this utility model;

[0021] Figure 3 This is a schematic elevation view of the hoisting device of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the support frame of this utility model;

[0023] Figure 5 This is a detailed drawing of the adjustment mechanism of this utility model;

[0024] Figure 6 This is a detailed drawing of the gear set of this utility model;

[0025] Figure 7 This is a detailed drawing of the hook assembly of this utility model;

[0026] Figure 8 This is an elevation view of the hook assembly of this utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Bridge deck; 2. Anti-collision guardrail template; 3. Support frame; 4. Lifting device; 5. Travel braking device; 6. Spacing adjustment device; 7. Material storage platform; 8. Counterweight; 31. Sliding track; 32. Steel frame; 41. Bevel gear drive assembly; 42. Hook assembly; 43. Working steel beam; 411. Driven bevel gear; 412. Driven bevel gear; 413. Driven column gear; 414. Driven column gear; 421. Hook mounting base; 422. Hand chain hoist; 61. Gear drive assembly; 62. Sliding block; 63. Guide device. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] Because bridge crash barriers require steel formwork for construction and need to be hoisted to the outside of the bridge deck, current methods often use cranes for installation. However, cranes require a certain amount of working space, and during bridge construction, there are often overlapping operations, making the workspace frequently limited. Furthermore, using cranes is costly, and adjusting the crane's position takes considerable time, impacting the construction schedule. Therefore, there is a need to design a flexible, simple, safe, and efficient crash barrier installation and hoisting device.

[0031] To address this problem, the inventor proposed a hoisting device for bridge crash barriers.

[0032] The present invention provides the following preferred embodiments.

[0033] like Figure 1-3As shown, the bridge crash barrier hoisting device includes: a bridge deck 1, a crash barrier template 2, and a support body 3. The crash barrier template 2 is installed on the side edge of the bridge deck 1. The support body 3 is located near the side edge of the bridge deck 1 and is used to install the crash barrier template 2. The support body 3 is manually pushed into the working area. The support body 3 is a cubic frame structure that provides support for the upper part. A spacing adjustment device 6 is installed at the top. A pair of hoisting devices 4 are slidably connected to the top of the spacing adjustment device 6. The hoisting devices 4 slide longitudinally along the bridge deck, and the pair of hoisting devices 4 are mirror-symmetrical about the center plane of the support body 3, with opposite sliding directions and equal sliding distances, which can be adjusted. The spacing between the two hoisting devices is adapted to objects of different shapes. The hoisting device 4 is long and narrow, with both ends cantilevered to a certain distance outside the support body 3. During operation, one end extends to a certain distance to the edge of the bridge deck 1. At the end of the hoisting device 4 away from the edge of the bridge deck, a counterweight 8 is suspended. At the end closer to the edge of the bridge deck, the work object is hoisted. The bottom of the four corners of the rectangular frame of the support body 3 is equipped with a travel braking device 5. The jacks are manually operated to make the top surface of the jacks contact the bridge deck, which achieves a braking effect. A material storage platform 7 is set at a certain distance above the travel braking device 5 to store a certain amount of hoisting materials for convenient construction.

[0034] In this embodiment, as Figure 4 As shown, to further improve the stability of the device during operation, the support body 3 is formed by fixed connection of steel sections to form a steel frame 32. The steel frame 32 consists of a vertical support system composed of four uprights. The four uprights are connected by horizontal steel sections at a certain distance from the bottom to form a rectangular frame. Three H-shaped horizontal steel sections are fixed to the top of the steel frame 32. The length direction of the H-shaped horizontal steel sections is parallel to that of the bridge deck 1. Sliding rails 31 are welded to the three horizontal steel sections of the longitudinal steel frame 32.

[0035] In this embodiment, as Figure 5As shown, to further improve the applicability of the device, a spacing adjustment device 6 is slidably connected to the upper surface of the sliding track 31. The spacing adjustment device 6 consists of a gear drive assembly 61, a slider 62, and two symmetrical guide devices 63. The gear drive assembly 61 is set on a sliding track 31 between the two guide devices 63. The gear drive assembly 61 is equipped with a lead screw, and bearing seats are set at both ends of the lead screw. The lead screw passes through the two sliders 62. A hoisting device 4 is fixed on the upper surface of the two sliders 62 respectively. The center point of the hoisting device 4 is set on the slider 62. A mounting plate is set at one end of the gear drive assembly 61. A gear set with a driving gear and a driven gear is set on the mounting plate opposite the lead screw. The lead screw passes through the mounting plate and is connected to the driven gear. A hand crank is connected to the center of the driving gear. The two sets of guide devices 63 are each equipped with a guide rod and two sliders 62. The sliders 62 set on the two sets of guide devices 63 are driven parts. The three sliders are in a straight line with the sliders 62 set on the gear drive assembly 61. The small gear is driven by a hand crank, which in turn drives the large gear, which in turn drives the lead screw to rotate. The distance between the two hoisting devices 4 is then adjusted by a slider. The sliding distances of the pair of hoisting devices 4 are opposite in direction and symmetrical about the center of the frame.

[0036] In this embodiment, as Figure 5-8 As shown, to further enhance the adaptability of the device, the hoisting device 4 includes a bevel gear drive assembly 41 and a hook assembly 42. Each of the two hoisting devices 4 is equipped with two collinear lead screws, separated by a certain distance. The bevel gear drive assembly 41 is positioned at the midpoint of this distance. The two lead screws are slidably connected to the hook assemblies 42, driving the two hook assemblies 42 to slide in opposite directions over the same distance. The hoisting device 4 also includes a working steel beam 43, which is fixedly connected to the slider 62 at the bottom of the hoisting device 4, providing support for the hoisting device 4. The hoisting load-bearing capacity is provided by the working steel beam 43. One end of the I-beam cantilever extends beyond the side of the bridge deck, while the other end has the same cantilever distance and is equipped with a counterweight to ensure equal bending moments at both ends.

[0037] In this embodiment, as Figure 5-8As shown, the bevel gear drive assembly 41 includes a driven bevel gear 411, a driving bevel gear 412, a driving spur gear 413, and a driven spur gear 414. Bearing seats are located at a certain distance from the ends of the two lead screws of the bevel gear drive assembly 41. The relatively close ends of the two lead screws are connected to the driven bevel gears 411. The two driven bevel gears 411 mesh with the driving bevel gear 412. A rotating rod is fixed to the center of the driving bevel gear 412. A mounting plate is provided on the back of the driving bevel gear 412. Utilizing the characteristic of bevel gears to change the direction of rotation, the rotating rod of the driving bevel gear 412 passes through the mounting plate and connects to the driven spur gear 414. The driven spur gear 414 meshes with the driving spur gear 413. A rotating rod is provided on the back of the driving spur gear 413, and a hand crank is provided at the other end of the rotating rod. The driving gear is smaller than the driven gear, and the smaller gear drives the larger gear, making rotation easier.

[0038] In this embodiment, as Figure 5-8 As shown, the hook assembly 42 includes a hook mounting base 421 and a hand chain hoist 422. The hook mounting base 421 is a frame formed by welding three steel plates. One plate is set horizontally, and the other two plates are set vertically to form a certain space. Two sliders 62 are slidably connected to the upper surface of the sliding rail 31. The two sliders 62 are mirror symmetrical and the hook mounting base 421 is fixedly connected to the upper surface. The hook mounting base 421 extends vertically to a certain distance below the top crossbeam of the support body 3. The horizontal width of the hook mounting base 421 is greater than the width of the sliding rail 31. A horizontal bar is set at a certain distance upward from the bottom of the two vertical plates of the hook mounting base 421. The horizontal bar passes through the hand chain hoist 422.

[0039] In this embodiment, as Figure 1-8 As shown, a safer way of using it is provided, with the counterweight 8 being the same as the hoisted anti-collision guardrail template 2.

[0040] The specific working process of this utility model is as follows:

[0041] Construction workers manually pushed the device to the designated work surface, adjusted the flatness of the four corners using hydraulic jacks, and simultaneously braked the device. The hook spacing was adjusted using an adjustment device to accommodate different sized templates. The crash barrier template was lifted using a hand-operated hoist, with an object of the same weight attached to the other end. Then, using a hand crank, the hook for lifting the template was positioned outwards from the bridge deck and reached the designated installation position. It was then lowered using the hand-operated hoist, while the lateral position was further adjusted using the adjustment device for greater accuracy. The other end was configured to match the weight of the lifted template and the cantilever on the support, ensuring no tipping. After installation, the hook was retracted using the hand crank to drive the bevel gear screw assembly. The entire device was then moved to the next work surface, and the same process was repeated.

[0042] The beneficial effects of this utility model are specifically reflected in the fact that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hoisting device for bridge crash barriers, characterized in that... The bridge crash barrier hoisting device includes: a bridge deck (1), a crash barrier template (2), and a support body (3). The crash barrier template (2) is installed on the side edge of the bridge deck (1). The support body (3) is located near the side edge of the bridge deck (1) and is used to install the crash barrier template (2). The support body (3) is a cubic frame structure that provides support for the upper part. A spacing adjustment device (6) is provided on the top. A pair of hoisting devices (4) are slidably connected to the top of the spacing adjustment device (6). The hoisting devices (4) slide longitudinally along the bridge deck. The support body (3) is mirror-symmetrical about the center plane, with opposite sliding directions and equal sliding distances. The hoisting device (4) is long and narrow, with both ends extending a certain distance to the outside of the support body (3), and one end extending a certain distance to the edge of the bridge deck (1) during operation. The hoisting device (4) has a counterweight (8) suspended at the end away from the edge of the bridge deck, and the work object is hoisted at the end near the edge of the bridge deck. The support body (3) has a travel braking device (5) at the bottom of the four corners of the rectangular frame, and a storage platform (7) is set at a certain distance upward from the travel braking device (5).

2. The bridge crash barrier object hoisting device according to claim 1, characterized in that... The support body (3) is formed by fixed connection of steel sections to form a steel frame (32). The steel frame (32) consists of a vertical support system composed of four uprights. The four uprights are connected by horizontal steel sections at a certain distance from the bottom and welded in pairs to form a rectangular frame. The top of the steel frame (32) is fixed with three H-shaped horizontal steel sections. The length direction of the H-shaped horizontal steel sections is parallel to the longitudinal direction of the bridge deck (1). Sliding rails (31) are welded on the three horizontal steel sections of the steel frame (32).

3. The bridge crash barrier object hoisting device according to claim 2, characterized in that... The upper surface of the sliding track (31) is slidably connected to the spacing adjustment device (6). The spacing adjustment device (6) consists of a gear drive assembly (61), a slider (62), and two symmetrical guide devices (63). The gear drive assembly (61) is set on a sliding track (31) between the two guide devices (63). The gear drive assembly (61) is provided with a lead screw, and bearing seats are provided at both ends of the lead screw. The lead screw passes through the two sliders (62). The hoisting device (4) is fixed on the upper surface of the two sliders (62). The center point of the hoisting device (4) is set on the slider (62). One end of the gear drive assembly (61) is provided with a mounting plate. The mounting plate is provided with a gear set opposite the lead screw, which is provided with a driving gear and a driven gear. The lead screw passes through the mounting plate and is connected to the driven gear. The center of the driving gear is connected to a hand crank. The two sets of guide devices (63) are respectively provided with a guide rod and two sliders (62). The sliders (62) provided on the two sets of guide devices (63) are driven members. The three sliders (62) and the sliders (62) provided on the gear drive assembly (61) are in a straight line.

4. The bridge crash barrier object hoisting device according to claim 3, characterized in that... The hoisting device (4) includes a bevel gear drive assembly (41) and a hook assembly (42). The two hoisting devices (4) are each provided with two collinear lead screws, which are separated by a certain distance. The bevel gear drive assembly (41) is located in the middle of the separation distance. The two lead screws are slidably connected to the hook assembly (42). The two lead screws drive the two hook assemblies (42) to slide in opposite directions and at the same distance. The hoisting device (4) also includes a working steel beam (43). The working steel beam (43) is located at the bottom of the hoisting device (4) and is fixedly connected to the slider (62) to provide support for the hoisting device (4).

5. The bridge crash barrier object hoisting device according to claim 4, characterized in that... The bevel gear drive assembly (41) includes a driven bevel gear (411), a driving bevel gear (412), a driving spur gear (413), and a driven spur gear (414). Bearing seats are provided at a certain distance from the ends of the two lead screws of the bevel gear drive assembly (41). The relatively close ends of the two lead screws are connected to the driven bevel gears (411). The two driven bevel gears (411) mesh with the driving bevel gear (412). A rotating rod is fixed at the center of the driving bevel gear (412). A mounting plate is provided on the back of the driving bevel gear (412). The rotating rod of the driving bevel gear (412) passes through the mounting plate and connects to the driven spur gear (414). The driven spur gear (414) meshes with the driving spur gear (413). A rotating rod is provided on the back of the driving spur gear (413), and a hand crank is provided at the other end of the rotating rod.

6. The bridge crash barrier object hoisting device according to claim 4, characterized in that... The hook assembly (42) includes a hook mounting base (421) and a hand chain hoist (422). The hook mounting base (421) is formed by welding three steel plates to form a frame. One plate is set horizontally, and the other two plates are set vertically to form a certain space. The upper surface of the sliding rail (31) is slidably connected to two sliders (62). The two sliders (62) are mirror symmetrical and the upper surface is fixedly connected to the hook mounting base (421). The hook mounting base (421) extends vertically to a certain distance below the top crossbeam of the support body (3). The horizontal width of the hook mounting base (421) is greater than the width of the sliding rail (31). A horizontal bar is set at a certain distance upward from the bottom of the two vertical plates of the hook mounting base (421). The horizontal bar passes through the hand chain hoist (422).

7. The bridge crash barrier object hoisting device according to claim 1, characterized in that... The counterweight (8) is the same as the anti-collision guardrail template (2) that is hoisted.

Images