Maintenance device for lower anchor head of double-amplitude tied-arch bridge

Abstract

The utility model relates to the technical field of overhauling devices for lower anchor heads of arch bridges, in particular to an overhauling device for a lower anchor head of a double-amplitude tied-arch bridge. Comprising a moving carrier with the hollow middle, the moving carrier is slidably connected with a first bridge floor and a second bridge floor, and a gap is formed between the first bridge floor and the second bridge floor; the mobile carrier is detachably connected with a suspension mechanism, and the hollow part of the mobile carrier is communicated with the interior of the suspension mechanism; the suspension mechanism can penetrate through the gap, the bottom end of the suspension mechanism is connected with a workbench, the length of the workbench is larger than the width of the gap, and the width of the workbench is smaller than the width of the gap. The device is ingenious in structural design, does not occupy a bridge floor lane or a water channel, and can be quickly lifted for avoiding when large ships go and go.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection devices for lower anchor heads of arch bridges, and particularly relates to an inspection device for lower anchor heads of a double-track tied-arch bridge. Background Technique

[0002] The daily regular inspection and maintenance of tied-arch bridges are crucial for the safe operation of the bridge body. Among them, the lower anchor head is a key stress point of the bridge structure, and its state is directly related to the overall stability and safety of the bridge. Regular inspection of the lower anchor head can timely detect and solve problems such as anchor head damage, corrosion, and loosening, thus effectively preventing serious accidents such as bridge collapse caused by anchor head failure. For double-track tied-arch bridges spanning rivers, the inspection work of the lower anchor head is particularly special and complex. Since the two-way bridge bodies are not connected, and the lower anchor head is located at the bottom of the bridge beam, and there is water surface below the arch bridge, this makes the inspection work face many challenges. If large ship equipment is used, it will not only occupy the waterway and affect the normal passage of ships, but also bring additional safety risks. If a bridge inspection vehicle is used for inspection and maintenance, on the one hand, it is necessary to go through cumbersome road occupation procedures and waterway procedures, and the process is long; on the other hand, the long-term occupation of the bridge deck by the bridge inspection vehicle will seriously affect the traffic. In addition, when some bridges are inspected and maintained using a bridge inspection vehicle, load calculation is also required, which will undoubtedly further extend the inspection period. Therefore, for the inspection work of the lower anchor head of a double-track tied-arch bridge, we urgently need a device that can efficiently and quickly complete the inspection work of the lower anchor head without affecting the waterway passage and bridge deck traffic, and at the same time ensure the safety and reliability during the inspection process. In this way, we can not only effectively guarantee the safe operation of the bridge, but also minimize the interference to the waterway and traffic to the greatest extent. Content of the Utility Model

[0003] Problem to be Solved: Efficiently and quickly complete the inspection work of the lower anchor head without affecting the waterway passage and bridge deck traffic, and at the same time ensure the safety and reliability during the inspection process.

[0004] To achieve the above object, the utility model provides a technical solution for an inspection device for lower anchor heads of a double-track tied-arch bridge, including a moving carrier with a hollow middle part, the moving carrier is slidably connected to Bridge Deck One and Bridge Deck Two, and a gap is formed between Bridge Deck One and Bridge Deck Two; a suspension mechanism is detachably connected to the moving carrier, and a communication is formed between the hollow part of the moving carrier and the inside of the suspension mechanism; the suspension mechanism can pass through the gap and a workbench is connected to the bottom end, the length of the workbench is greater than the width of the gap, and the width of the workbench is less than the width of the gap.

[0005] Preferably, the moving carrier is slidably connected to Bridge Deck One and Bridge Deck Two through casters.

[0006] Preferably, the mobile carrier is provided with an inner tube extending downward, and the suspension mechanism is correspondingly provided with an outer tube for the inner tube. The inner tube is sleeved inside the outer tube and is detachably connected by bolts.

[0007] Preferably, after the suspension mechanism is connected to the workbench, the whole presents a T shape. A communication space is formed inside the T shape. The periphery of the workbench is surrounded by a guardrail and vertical inclined rods. One end of each vertical inclined rod is connected to a corner of the workbench, and the other end is connected to the outside of the suspension mechanism.

[0008] Preferably, it further includes a ladder. The top end of the ladder is clamped with the mobile carrier, and the bottom end of the ladder is close to the workbench.

[0009] Preferably, a transition tabletop is arranged in the middle of the suspension mechanism, and the area of the transition tabletop is smaller than the cross-section of the suspension mechanism.

[0010] Preferably, casters are arranged between one side of the suspension mechanism and one side wall of the bridge deck, and between the other side of the suspension mechanism and the other side wall of the bridge deck.

[0011] Compared with the prior art, the utility model has the following remarkable beneficial effects:

[0012] 1. Ingenious structural design: The device of the utility model is specially designed with a part that can utilize the gap between two bridge decks, so that the lower part of the device can be easily placed, and it is rotationally connected to the mobile carrier to realize the sliding connection of the device on the bridge deck.

[0013] 2. Convenient maintenance passage: A ladder is arranged inside the device, which is convenient for maintenance personnel to quickly enter and reach the workbench, so as to efficiently complete the maintenance work of the lower anchor head.

[0014] 3. Do not affect traffic and waterways: The device of the utility model does not occupy the bridge deck lane and does not occupy the waterway, ensuring the normal passage of traffic and waterways.

[0015] 4. Quick avoidance function: In case of large ships coming and going, the device can be quickly lifted for avoidance, effectively solving the problems mentioned in the background technology and improving the flexibility and safety of bridge maintenance. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the utility model before installation.

[0017] Figure 2 It is a schematic structural diagram of the utility model after installation.

[0018] Description of the reference numerals: 1. Bridge deck one; 11. Gap; 2. Bridge deck two; 3. Mobile carrier; 31. Inner tube; 32. Column; 4. Suspension mechanism; 41. Outer tube; 5. Workbench; 51. Guardrail; 52. Vertical inclined rod; 6. Caster; 7. Ladder; 8. Transition tabletop. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model:

[0020] As shown in the figure, a maintenance device for the lower anchor head of a double - span tied - arch bridge is defined as follows Figure 1 In the three directions shown, the direction of the bridge deck extension is the y - axis, the direction of the horizontal plane perpendicular to the y - axis is the x - axis direction, and the direction perpendicular to the bridge deck upward is the z - axis direction. The maintenance device includes a moving carrier 3 with a hollow middle part. The moving carrier 3 is slidably connected to the bridge deck one 1 and the bridge deck two 2. The sliding connection method can be a track or can be realized through casters 6; the moving carrier 3 includes four columns 32, and four casters 6 are installed at the bottom of the four columns 32. A gap 11 is formed between the bridge deck one 1 and the bridge deck two 2. The length of the moving carrier 3 in the x - axis direction is greater than the width of the gap 11 in the x - axis direction. The moving carrier 3 can cross the gap 11 and move along the bridge deck one 1 and the bridge deck two 2 in the y - axis direction; the moving carrier 3 is detachably connected with a suspension mechanism 4. There are various detachable connection methods and are not limited herein. For the convenience of understanding, the following is an example: The moving carrier 3 is provided with four inner tubes 31 extending downward, and the suspension mechanism 4 is correspondingly provided with four outer tubes 41 for the four inner tubes 31. After the inner tube 31 is sleeved in the outer tube 41, the detachable connection is realized through bolts. It should be noted here that the connection between the suspension mechanism 4 and the workbench 5 is completed first, and then the moving carrier 3 is connected to the suspension mechanism 4. The hollow part of the moving carrier 3 is in communication with the inside of the suspension mechanism 4; the suspension mechanism 4 can pass through the gap 11, and the workbench 5 is suspended at the bottom of the suspension mechanism 4. The length of the workbench 5 is greater than the width of the gap 11, and the width of the workbench 5 is less than the width of the gap 11. Such a design is to make the suspension mechanism 4 and the workbench 5 as a whole in a T - shaped structure after the connection between the suspension mechanism 4 and the workbench 5 on the bridge deck. When the T - shaped structure is rotated until the length direction of the workbench 5 is parallel to the y - axis, the T - shaped structure is slowly put into the gap 11. After reaching the specified height, the T - shaped structure is rotated 90 degrees, and the length direction of the workbench 5 is changed to be parallel to the x - axis. At this time, the suspension mechanism 4 is lifted upward, and the outer tube 41 is sleeved outside the inner tube 31 to complete the connection between the suspension mechanism 4 and the moving carrier 3.

[0021] A connected space is formed inside the T-shaped structure, allowing staff to walk inside to complete the maintenance work of the lower anchor heads under the bridge deck 1 and the bridge deck 2. For the safety of the staff, guardrails 51 and vertical diagonal bars 52 are provided around the workbench 5. One end of the vertical diagonal bar 52 is connected to a corner of the workbench 5, and the other end is connected to the outside of the suspension mechanism 4. The arrangement of the vertical diagonal bars 52 forms multiple triangular support structures, and the movement of the staff on the workbench 5 will not cause the device to shake. To facilitate the staff's access, a climbing ladder 7 is placed after the device is installed. The top of the climbing ladder 7 is clamped to the mobile carrier 3, and the bottom of the climbing ladder 7 is close to the workbench 5. The staff can complete the up and down movements along the climbing ladder 7. If the height difference for the staff to go up and down is large, a transition platform 8 can be set in the middle of the suspension mechanism 4. The area of the transition platform 8 is smaller than the cross-section of the suspension mechanism 4, which does not affect the passage of personnel. The climbing ladder 7 is divided into two sections in the Z-axis direction by the transition platform 8.

[0022] The four casters 6, which serve as the support points of the entire device on the bridge deck, may cause shaking. To avoid this shaking, casters 6 are additionally installed between the side of the suspension mechanism 4 and the side wall of the bridge deck 1, and between the other side of the suspension mechanism 4 and the side wall of the bridge deck 2. In this way, not only does the suspension mechanism 4 move along with the mobile carrier 3, but the suspension mechanism 4 itself also slides along the side wall of the bridge body, forming multiple-plane force application points and enhancing the stability of the overall device.

[0023] During use, connect the suspension mechanism 4 to the workbench 5 on the bridge deck. Note that the suspension mechanism 4 is fixed at the middle position in the length direction of the workbench 5 to ensure balance; the guardrails 51 and the vertical diagonal bars 52 are installed in place, and thus the T-shaped structure is assembled; rotate the length direction of the workbench 5 to be parallel to the y-axis direction, lower the T-shaped structure from the gap 11 to the designated position, and then rotate the suspension mechanism 4 by 90 degrees, so that the length direction of the workbench 5 is parallel to the x-axis. At this time, lift the suspension mechanism 4 upward to complete the connection with the mobile carrier 3. The maintenance personnel reach the workbench 5 through the climbing ladder 7 to maintain the lower anchor heads on both sides. After completing the maintenance of a set of lower anchor heads, push the mobile carrier 3 forward to maintain the next set. This maintenance device is small in size and does not occupy the bridge deck road, and hardly occupies the waterway; in case of special circumstances, the mobile carrier 3 can be rotated by 90 degrees and lifted upward to vacate the area below the bridge deck, and the device can be placed back after the avoidance is over.

[0024] The above embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A device for inspecting and repairing the lower anchor head of a double-width tied arch bridge, characterized in that: The invention comprises a mobile carrier (3) with a hollowed-out middle portion, the mobile carrier (3) being slidably connected to a first bridge deck (1) and a second bridge deck (2), and a gap (11) being formed between the first bridge deck (1) and the second bridge deck (2); the mobile carrier (3) being detachably connected to a suspension mechanism (4), and the hollowed-out portion of the mobile carrier (3) being connected to the inside of the suspension mechanism (4); the suspension mechanism (4) being able to pass through the gap (11) and having a workbench (5) connected to its bottom end, the length of the workbench (5) being greater than the width of the gap (11), and the width of the workbench (5) being less than the width of the gap (11).

2. The anchor head maintenance device for a double-width tied arch bridge according to claim 1, characterized in that: The mobile carrier (3) is slidably connected to the bridge deck 1 (1) and the bridge deck 2 (2) via casters (6).

3. The anchor head maintenance device for a double-width tied arch bridge according to claim 2, characterized in that: The mobile carrier (3) is provided with an inner tube (31) extending downward, and the suspension mechanism (4) is provided with an outer tube (41) corresponding to the inner tube (31), and the inner tube (31) is sleeved in the outer tube (41) and is detachably connected via bolts.

4. The anchor head maintenance device for a double-width tied arch bridge as claimed in claim 3 is characterized in that: After the suspension mechanism (4) and the workbench (5) are connected, the whole is in a T-shape, a connected space is formed inside the T-shape, a guardrail (51) and a vertical inclined rod (52) are arranged around the periphery of the workbench (5), one end of the vertical inclined rod (52) is connected to a corner of the workbench (5), and the other end is connected to the outside of the suspension mechanism (4).

5. The anchor head maintenance device for a double-width tied arch bridge according to claim 1, characterized in that: It also comprises a ladder (7), the top end of the ladder (7) is clamped with the movable carrier (3), and the bottom end of the ladder (7) is close to the workbench (5).

6. The anchor head maintenance device for a double-width tied arch bridge according to claim 1, characterized in that: A transition table (8) is arranged in the middle of the suspension mechanism (4), and the area of ​​the transition table (8) is smaller than the cross section of the suspension mechanism (4).

7. The anchor head maintenance device for a double-width tied arch bridge according to claim 1, characterized in that: Casters (6) are provided between the side of the suspension mechanism (4) and the first (1) side wall of the bridge deck, and between the other side of the suspension mechanism (4) and the second (2) side wall of the bridge deck.

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