Object lifting device for high-speed bridge widening construction

Abstract

The utility model discloses an object lifting device for high-speed bridge widening construction in the technical field of high-speed bridge widening construction, which comprises a widening beam body, a support frame body and a walking device, the two ends, away from the first sliding device, of the top of the supporting frame body are fixedly connected with a first guiding device and a second guiding device correspondingly. The lifting device is simple in structure, and meanwhile construction materials can be directly lifted to a construction working face from the ground between a new bridge and an old bridge. The distance of the lifting hook can be adjusted through the sliding device, the lifting hook can adapt to objects of different sizes, meanwhile, the arranged walking device enables the lifting hook to freely walk, and the lifting hook can be conveniently used on different working faces.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge widening construction technology, specifically a lifting device for objects used in highway bridge widening construction. Background Technology

[0002] In recent years, with continuous social progress and rapid economic development, some early-built bridges and roads, especially two- or four-lane highways, have experienced traffic congestion and insufficient transport capacity due to their narrow width and limited number of lanes, leading to a year-on-year increase in safety accidents. Widening bridges aims to alleviate these problems by increasing the width of the road. In bridge widening projects, lifting equipment is typically used for hoisting and transporting components. Currently, cranes are commonly used for bridge widening construction. However, due to limited site conditions, cranes often struggle to operate on the widening work surface. Frequent crane movement can also cause cracking of the cast-in-place concrete at the splicing surface. Furthermore, construction materials are sometimes difficult to transport to the bridge deck.

[0003] Therefore, a device needs to be designed that can lift objects directly from the ground between the new and old bridges, and that is simple in structure and flexible in movement and hoisting. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a lifting device for objects used in the construction of widening high-speed bridges. This solves the problem of cracking caused by frequent crane traffic on the bridge surface during the widening process, as well as the difficulty in transporting construction materials to the bridge surface.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: The lifting device for the construction of widening high-speed bridges includes: a widening beam, a support frame, and a traveling device. The support frame is placed in the center of the widening beams on both sides. The traveling device is fixedly installed at the bottom of the support frame. A pair of hoisting devices are slidably connected to the top of the support frame. The pair of hoisting devices are symmetrically arranged along the central axis of the support frame. A first sliding device is provided between the hoisting device and the support frame. The hoisting device is arranged along the length direction of the widening beam. The first sliding device is arranged perpendicular to the length direction of the hoisting device. A first guide device and a second guide device are fixedly connected to the top of the support frame away from the first sliding device. The length directions of the first guide device and the second guide device are arranged perpendicular to the length direction of the hoisting device and are slidably connected to the hoisting device.

[0006] The beneficial effects of the present utility model are as follows: The structure is simple, and at the same time, construction materials can be directly lifted from the ground between the new bridge and the old bridge to the construction working surface. The distance of the lifting hook can be adjusted through the sliding device, which can adapt to objects of different sizes. At the same time, the walking device provided enables the present utility model to walk freely, facilitating its use on different working surfaces.

[0007] Based on the above technical solutions, the present utility model can be further improved as follows.

[0008] Furthermore, the support frame body includes vertical support rods, a bottom cross bar, lateral diagonal braces, a top cross bar, tracks, and a bottom connecting plate. The four vertical support rods are distributed in a rectangular shape at the four corner points. The bottom of the vertical support rods is welded to the bottom connecting plate. The bottom cross bar is perpendicularly welded between the vertical support rods, forming a rectangular frame. The bottom cross bar is located at a certain distance upward from the bottom of the vertical support rods. The four lateral diagonal braces are paired in two, in a scissor shape, and are welded between the vertical support rods and are parallel to the length direction of the widened beam body. The five top cross bars are welded into a "day" - shaped frame, and the four corner points are welded to the ends of the vertical support rods away from the bottom connecting plate. The three tracks are welded to the horizontal surface of the "day" - shaped top cross bar frame. The tracks are made of channel steel.

[0009] The beneficial effect of adopting the above - mentioned further solution is that the support frame body with a frame structure can provide a greater lifting weight. Further, the walking device includes walking wheels and a hydraulic jack. The walking wheels are fixedly connected to the bottom connecting plate. The bottom of the hydraulic jack away from the elongation direction is fixedly connected to the support frame body. The elongation direction of the hydraulic jack faces the widened beam body. A backing plate is fixedly connected to the end of the elongation direction of the hydraulic jack.

[0010] The beneficial effect of adopting the above - mentioned further solution is that the cooperation of the walking wheels and the hydraulic jack can make the device more flexible to use, and by adjusting the height of the four corners of the frame body through the hydraulic jack, the stability of the entire device during operation can be ensured. Further, the first sliding device includes a sliding seat, a screw rod, and bearing seats. The two bearing seats are fixedly installed at both ends of the track. The screw rod is roll - installed on the bearing seats. The internal screw threads of the two sliding seats are opposite, the sliding directions are opposite, and they are mirror - symmetric with respect to the central plane of the support frame body. The screw rod passes through the center of the mounting hole of the sliding seat. The sliding seat slides along the length direction of the screw rod. The hoisting device is fixedly connected to the top of the sliding seat. Fixed supports are installed at both ends of the first guiding device and the second guiding device, and guiding rods are fixedly connected. The two sliding seats are slidably connected to the guiding rods.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the reverse thread design allows the slides to move in opposite directions in pairs, while ensuring that the movement distance of the two slides is the same, which is beneficial for adjusting the position of the hook. The screw structure can also achieve the effect of hook braking. Furthermore, a mounting plate is fixedly installed on the top of the slide, and the outer surface of the mounting plate is fixedly connected to the bottom of the hoisting device. A threaded box is welded to the inner surface of the mounting plate, and four vertical rods are welded to the lower surface of the threaded box. The four vertical rods are respectively inserted into the transverse rollers on the same axis. Two longitudinal fixing rods are fixedly connected to the lower surface of the vertical rods. Four vertical rollers are connected to the inner side of the longitudinal fixing rods. The arcs of the four vertical rollers are tangent to the surface of the track and are in rolling connection. The four transverse rollers are tangent to the two sides of the track and are in rolling connection. The lower surface of the threaded box is higher than the highest point of the track.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the rolling tangential contact between the roller and the frame reduces sliding friction, ensuring effective sliding of the slide. Furthermore, the two hoisting devices are respectively equipped with a second sliding device and a third sliding device. The structure of the second sliding device and the third sliding device is consistent with the first sliding device. The hoisting device is equipped with two hook mounting seats, which are welded to the slide and have hooks hinged to their bottoms.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the position of the hook can be better adjusted through the second and third sliding devices, which is more conducive to lifting objects of different sizes. Furthermore, one end of the first, second, and third sliding devices is respectively provided with an adjustment device. The adjustment device includes a hand crank, a driven gear, a driving gear, and a gear mounting plate. The gear mounting plate is bolted to the bottom crossbar at the top of the support frame and has a lead screw insertion hole. After the lead screw penetrates the gear mounting plate, it is fixedly connected to the center hole of the driven gear. The driven gear meshes with the driving gear, and the number of teeth of the driven gear is greater than that of the driving gear. The side of the driving gear away from the gear mounting plate is fixedly connected to the hand crank through a rod.

[0014] The technical effects and advantages of this utility model are: the position of the hook can be adjusted manually, providing excellent adaptability in the construction of widened bridges where power supply is limited. Furthermore, the number of teeth on the driven gear is twice that of the driving gear.

[0015] The beneficial effect of adopting the above-mentioned further solution is that it reduces the construction difficulty for construction workers by leveraging the lever principle of gears.

[0016] This utility model has the advantages of simple structure, easy construction, low cost, and simple maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the splicing operation of this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the lifting device of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the support frame of this utility model;

[0020] Figure 4 This is a detailed drawing of the walking device of this utility model;

[0021] Figure 5 This is a detailed drawing of the sliding device of this utility model;

[0022] Figure 6 This is a detailed drawing of the end of the sliding device of this utility model;

[0023] Figure 7 This is a detailed drawing of the slide block of this utility model;

[0024] Figure 8 This is an elevation view of the slide block of this utility model;

[0025] Figure 9 This is an elevation view of the lifting device of this utility model;

[0026] Figure 10 This is a detailed drawing of the adjustment device of this utility model;

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

[0028] 1. Widened beam body; 2. Support frame body; 21. Vertical support rod; 22. Bottom horizontal bar; 23. Lateral diagonal brace; 24. Top horizontal bar; 25. Track; 26. Bottom connecting plate; 3. Traveling device; 31. Traveling wheel; 32. Hydraulic jack; 4. First sliding device; 41. Screw rod; 42. Bearing seat; 5. Lifting device; 51. Hook mounting seat; 52. Hook; 6. Adjusting device; 61. Hand crank; 62. Driven gear; 63. Drive gear; 64. Gear mounting plate; 7. First guide device; 8. Second guide device; 9. Second sliding device; 10. Third sliding device; 11. Slide seat; 111. Mounting pad; 112. Threaded box body; 113. Longitudinal fixing rod; 114. Roller; 115. Vertical bar. 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] Currently, cranes are commonly used for lifting and transporting materials during bridge widening construction. However, due to limited site conditions, cranes often struggle to operate on the widening work surface. Frequent crane movement across the bridge deck can also cause cracking of the cast-in-place concrete at the joint. Furthermore, transporting construction materials to the bridge deck is sometimes difficult. Therefore, a device is needed that can directly lift objects from the ground between the new and old bridges, while also possessing a simple structure and flexible movement for hoisting operations.

[0031] To address this problem, the inventor proposed a lifting device for objects used in the widening construction of high-speed bridges.

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

[0033] like Figure 1-10 As shown, the lifting device for the construction of a high-speed bridge widening project includes: a widening beam 1, a support frame 2, and a traveling device 3. The support frame 2 is centrally located on both sides of the widening beam 1. The lifting device travels along the length of the widening beam and can directly lift objects from the ground below the bridge. The traveling device 3 is fixedly installed at the bottom of the support frame 2. A pair of lifting devices 5 are slidably connected to the top of the support frame 2. The pair of lifting devices 5 are symmetrically arranged along the central axis of the support frame 2. A first sliding device 4 is provided between the lifting devices 5 and the support frame 2. The lifting devices 5 are arranged along the length of the widening beam 1, and the first sliding device 4 is perpendicular to the length of the lifting devices 5. A first guide device 7 and a second guide device 8 are fixedly connected to the top of the support frame 2 at the ends furthest from the first sliding device 4. The lengths of the first guide devices 7 and the second guide devices 8 are perpendicular to the length of the lifting devices 5 and are slidably connected to them. The lifting device can move longitudinally and slide freely laterally. The hook position can also be adjusted according to the size of different objects.

[0034] In this embodiment, as Figure 3As shown, to further enhance the load-bearing capacity of the support frame, the support frame 2 includes vertical support rods 21, bottom horizontal bars 22, lateral diagonal braces 23, top horizontal bars 24, rails 25, and bottom connecting plates 26. The four vertical support rods 21 are distributed in a rectangular shape at the four corners. The bottom of the vertical support rods 21 is welded to the bottom connecting plates 26. The bottom horizontal bars 22 are vertically welded between the vertical support rods 21, forming a rectangular frame. The bottom horizontal bars 22 are located at a certain distance upward from the bottom of the vertical support rods 21. The four lateral diagonal braces 23 are arranged in pairs, forming a scissor shape, and are welded between the vertical support rods 21, parallel to the length direction of the widened beam 1. The five top horizontal bars 24 are welded into a H-shaped frame, with the four corners welded to the ends of the vertical support rods 21 away from the bottom connecting plates 26. The three rails 25 are welded to the transverse surface of the H-shaped top horizontal bar 24 frame, and the rails 25 are made of channel steel. The addition of scissor bracing on the side increases overall stability, and the entire device adopts a frame structure made of welded steel sections, which better meets construction requirements.

[0035] In this embodiment, as Figure 4 As shown, to further improve the stability of the device, the walking device 3 includes walking wheels 31 and hydraulic jacks 32. The walking wheels 31 are fixedly connected to the bottom connecting plate 26. The bottom of the hydraulic jacks 32, away from the extension direction, is fixedly connected to the support frame 2. The extension direction of the hydraulic jacks 32 faces the widening beam 1, and a pad is fixedly connected to the end of the hydraulic jacks 32 in the extension direction. When the lifting device is moving, the end faces of the hydraulic jacks retract and do not contact the road surface. After the device is in place, the four jack end faces are manually operated to lift and contact the road surface, while adjusting the flatness of the four corners.

[0036] In this embodiment, as Figure 5-6 As shown, to further enhance the adaptability of the device, the first sliding device 4 includes a slide block 11, a lead screw 41, and a bearing seat 42. Two bearing seats 42 are fixedly installed at both ends of the track 25. The lead screw 41 is rolled on the bearing seat 42. The two slide blocks 11 have opposite internal threads, slide in opposite directions, and are mirror-symmetrical with the center plane of the support frame 2, so that the movement directions of the two slide blocks are opposite and the distance is the same. The lead screw 41 passes through the center of the mounting hole of the slide block 11, and the slide block 11 slides along the length of the lead screw 41. The top of the slide block 11 is fixedly connected to the hoisting device 5. The first guide device 7 and the second guide device 8 are both equipped with fixed supports and fixedly connected to guide rods. The two slide blocks 11 are slidably connected to the guide rods.

[0037] In this embodiment, as Figure 6-8As shown, a mounting plate 111 is fixedly installed on the top of the slide 11. The outer surface of the mounting plate 111 is fixedly connected to the bottom of the hoisting device 5. A threaded housing 112 is welded to the inner surface of the mounting plate 111. Four vertical rods 115 are welded to the lower surface of the threaded housing 112. The four vertical rods 115 are coaxially inserted into the transverse rollers 114. Two longitudinal fixing rods 113 are fixedly connected to the lower surface of the vertical rods 115. Four vertical rollers 114 are connected to the inner side of the longitudinal fixing rods 113. The arcs of the four vertical rollers 114 are tangent to the surface of the track 25 and are in rolling connection. The four transverse rollers 114 are tangent to the two sides of the track 25 and are in rolling connection. The lower surface of the threaded housing 112 is higher than the highest point of the track 25. The rolling tangential contact between the rollers and the frame reduces the sliding friction and ensures the effective sliding of the slide.

[0038] In this embodiment, as Figure 9 As shown, the two hoisting devices 5 are respectively equipped with a second sliding device 9 and a third sliding device 10. The structures of the second sliding device 9 and the third sliding device 10 are the same as those of the first sliding device 4. The hoisting device 5 is equipped with two hook mounting seats 51, which are welded to the slide seat 11 and have hooks 52 hinged to the bottom. This allows the position of the hooks to be adjusted according to the size of different objects.

[0039] In this embodiment, as Figure 10 As shown, a more flexible usage method is provided. One end of the first sliding device 4, the second sliding device 9, and the third sliding device 10 is respectively equipped with an adjustment device 6. The adjustment device 6 includes a hand crank 61, a driven gear 62, a driving gear 63, and a gear mounting plate 64. The gear mounting plate 64 is bolted to the bottom crossbar 22 at the top of the support frame 2 and has a lead screw 41 insertion hole. The lead screw 41 penetrates the gear mounting plate 64 and is fixedly connected to the center hole of the driven gear 62. The driven gear 62 meshes with the driving gear 63, and the number of teeth of the driven gear 62 is greater than that of the driving gear 63. The side of the driving gear 63 away from the gear mounting plate 64 is fixedly connected to the hand crank 61 via a rod. The position of the hook can be adjusted manually, providing excellent adaptability in widened bridge construction where power supply is limited.

[0040] In this embodiment, as Figure 10 As shown, in order to further improve the adaptability of the device, the number of teeth of the driven gear 62 is twice that of the driving gear 63, and the construction difficulty of the construction personnel is reduced by the lever principle of the gear.

[0041] The specific working process of this utility model is as follows:

[0042] Construction workers manually pushed the device to the center of the widened work area and moved it to the designated work surface. They then manually adjusted the four corners for flatness using hydraulic jacks, while simultaneously braking the device. The object to be lifted was placed under the bridge. A hand crank was used to rotate the gears, which in turn rotated the lead screw, causing the two sliders to move in opposite directions at equal distances. After adjusting the position of the lifting device, the four hooks were adjusted again using the hand crank. The hooks were then lowered and securely attached to the object. Once the object was lifted to the designated height, the hydraulic jacks were used to bring the rollers to ground contact, moving the entire device and object to the work surface where materials needed to be used.

[0043] 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 lifting device for objects used in the widening construction of a high-speed bridge, characterized in that... The lifting device for the construction of the widening project of the high-speed bridge includes: a widening beam (1), a support frame (2), and a traveling device (3). The support frame (2) is placed in the middle of the widening beam (1) on both sides. The traveling device (3) is fixedly installed at the bottom of the support frame (2). A pair of hoisting devices (5) are slidably connected to the top of the support frame (2). The pair of hoisting devices (5) are symmetrically arranged along the central axis of the support frame (2). A first [missing information] is provided between the hoisting device (5) and the support frame (2). The sliding device (4) and the hoisting device (5) are arranged along the length direction of the widened beam (1). The first sliding device (4) is arranged perpendicular to the length direction of the hoisting device (5). The top of the support frame (2) is fixedly connected to the two ends away from the first sliding device (4) with a first guide device (7) and a second guide device (8). The length directions of the first guide device (7) and the second guide device (8) are arranged perpendicular to the length direction of the hoisting device (5) and are slidably connected to the hoisting device (5).

2. The lifting device for objects used in the widening construction of high-speed bridges according to claim 1, characterized in that... The support frame (2) includes vertical support rods (21), bottom crossbars (22), lateral braces (23), top crossbars (24), rails (25), and bottom connecting plates (26). The four vertical support rods (21) are arranged in a rectangular pattern at the four corners. The bottom of each vertical support rod (21) is welded to the bottom connecting plate (26). The bottom crossbars (22) are vertically welded between the vertical support rods (21), forming a rectangular frame. The bottom crossbars (22) are located between the vertical support rods (21). 21) At a certain distance from the bottom, the four lateral braces (23) are paired in pairs, forming a scissor shape, and are welded between the vertical support rods (21) and parallel to the length direction of the widened beam (1). The five top crossbars (24) are welded into a H-shaped frame, with the four corner points welded to the end of the vertical support rod (21) away from the bottom connecting plate (26). The three tracks (25) are welded to the transverse surface of the H-shaped top crossbar (24) frame, and the tracks (25) are made of channel steel.

3. The lifting device for objects used in the widening construction of high-speed bridges according to claim 2, characterized in that... The walking device (3) includes a walking wheel (31) and a hydraulic jack (32). The walking wheel (31) is fixedly connected to the bottom connecting plate (26). The bottom of the hydraulic jack (32) away from the extension direction is fixedly connected to the support frame (2). The extension direction of the hydraulic jack (32) is towards the widening beam (1). A pad is fixedly connected to the end of the hydraulic jack (32) in the extension direction.

4. The lifting device for objects used in the widening construction of high-speed bridges according to claim 2, characterized in that... The first sliding device (4) includes a slide (11), a lead screw (41), and a bearing seat (42). The two bearing seats (42) are fixedly installed at both ends of the track (25). The lead screw (41) is rolled on the bearing seat (42). The two slides (11) have opposite internal threads, slide in opposite directions, and are mirror-symmetrical to the center plane of the support frame (2). The lead screw (41) passes through the center of the mounting hole of the slide (11). The slide (11) slides along the length of the lead screw (41). The hoisting device (5) is fixedly connected to the top of the slide (11). The first guide device (7) and the second guide device (8) are both equipped with fixed supports and fixedly connected with guide rods. The two slides (11) are slidably connected to the guide rods.

5. The lifting device for objects used in the widening construction of high-speed bridges according to claim 4, characterized in that... A mounting pad (111) is fixedly installed on the top of the slide (11). The outer surface of the mounting pad (111) is fixedly connected to the bottom of the hoisting device (5). A threaded box (112) is welded to the inner surface of the mounting pad (111). Four vertical rods (115) are welded to the lower surface of the threaded box (112). The four vertical rods (115) are respectively inserted into the transverse rollers (114) on the same axis. Two longitudinal fixing rods (113) are fixedly connected to the lower surface of the vertical rods (115). Four vertical rollers (114) are connected to the inner side of the longitudinal fixing rods (113). The arcs of the four vertical rollers (114) are tangent to the surface of the track (25) and are connected in a rolling manner. The four transverse rollers (114) are tangent to the two sides of the track (25) and are connected in a rolling manner. The lower surface of the threaded box (112) is higher than the highest point of the track (25).

6. The lifting device for objects used in the widening construction of high-speed bridges according to claim 5, characterized in that... The two hoisting devices (5) are respectively equipped with a second sliding device (9) and a third sliding device (10). The structure of the second sliding device (9) and the third sliding device (10) is the same as that of the first sliding device (4). The hoisting device (5) is equipped with two hook mounting seats (51). The hook mounting seats (51) are welded to the slide (11) and the bottom is hinged with a hook (52).

7. The lifting device for objects used in the widening construction of high-speed bridges according to claim 6, characterized in that... One end of the first sliding device (4), the second sliding device (9), and the third sliding device (10) is respectively provided with an adjustment device (6). The adjustment device (6) includes a hand crank (61), a driven gear (62), a driving gear (63), and a gear mounting plate (64). The gear mounting plate (64) is bolted to the bottom crossbar (22) at the top of the support frame (2) and is provided with a lead screw (41) insertion hole. The lead screw (41) penetrates the gear mounting plate (64) and is fixedly connected to the center hole of the driven gear (62). The driven gear (62) meshes with the driving gear (63). The number of teeth of the driven gear (62) is greater than that of the driving gear (63). The side of the driving gear (63) away from the gear mounting plate (64) is fixedly connected to the hand crank (61) through a rod.

8. The lifting device for objects used in the widening construction of high-speed bridges according to claim 7, characterized in that... The number of teeth of the driven gear (62) is twice that of the driving gear (63).

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