Steel pipe support bottom splicing device

Abstract

The utility model belongs to the technical field of bridge jacking construction equipment, and particularly relates to a steel pipe support bottom splicing device. A steel pipe support bottom splicing device comprises a steel pipe support bottom splicing mechanism and a jacking jack, the steel pipe support bottom splicing mechanism comprises a steel frame and rotating supporters, the steel frame is of a frame structure, and the two symmetrical rotating supporters are fixedly connected into the steel frame; the jacking jack is located at the bottom of the steel frame and under the rotating supporting device, the rotating supporting device is used for fixing the steel pipe support, and the jacking jack is used for jacking the steel pipe support standard knot upwards to achieve splicing with the lower portion of the steel pipe support. The lifting jack is installed at the bottom and is matched with the rotary supporting device, the steel pipe support can be heightened quickly under the condition that top equipment of the steel pipe support does not need to be dismantled, and the problems that a traditional steel pipe support is difficult to heighten and low in construction efficiency are effectively solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of bridge jacking construction equipment, and specifically relates to a bottom connection device for steel pipe support. Background Technology

[0002] In bridge jacking construction, steel pipe supports are key load-bearing structures, and their height needs to be dynamically adjusted as the jacking process progresses. Traditional steel pipe support heightening technology has the following technical bottlenecks: (1) The problem of splicing under limited space: Since the gap between the bottom of the beam and the top of the support is usually less than 50cm during the jacking operation, conventional hoisting equipment cannot be deployed. Construction personnel need to operate in a narrow space of less than 1m, resulting in low efficiency of steel pipe support splicing and certain safety hazards; (2) Defects in jacking accuracy control: The existing technology adopts a step-by-step jacking method, which requires repeated disassembly of the jacks at the top of the steel pipe support for support heightening, which easily leads to construction deviations during the jacking process; (3) In high mountain and canyon areas, traditional ground-mounted steel pipe support splicing is difficult to carry out with the help of large equipment such as cranes, and the construction difficulty and risk are relatively high. Therefore, a safe and efficient steel pipe support heightening device is urgently needed to solve the above problems. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a bottom connection device for steel pipe supports. This device has a stable structure, is easy to install, and is highly adaptable. It is installed at the bottom using a jack and works in conjunction with a rotating support device. It enables rapid raising of the steel pipe support without removing the top equipment, effectively solving the problems of difficulty in raising traditional steel pipe supports and slow construction efficiency.

[0004] The technical solution of this utility model is as follows: a steel pipe support bottom connection device, including a steel pipe support bottom connection mechanism and a lifting jack. The steel pipe support bottom connection mechanism includes a steel frame and a rotating support. The steel frame is a frame structure, and two symmetrical rotating supports are fixedly connected inside it. The lifting jack is located at the bottom of the steel frame and directly below the rotating supports. The rotating supports are used to fix the steel pipe support, and the lifting jack is used to lift the standard section of the steel pipe support upward to complete the connection with the lower part of the steel pipe support.

[0005] The steel frame includes a vertical support, a middle connecting horizontal plate, a top connecting horizontal plate, a bottom connecting horizontal plate, and a base plate. The base plate is welded to the vertical support, and the vertical support, the middle connecting horizontal plate, the top connecting horizontal plate, and the bottom connecting horizontal plate are fixedly connected by high-strength bolts.

[0006] A connecting inclined plate is provided in the frame space between the vertical support, the middle connecting horizontal plate, and the top connecting horizontal plate.

[0007] The lower side of the steel frame is provided with a connecting interface. The height of the middle connecting plate at the connecting interface is greater than the sum of the height of the lifting jack and the standard section of the steel pipe support when the jack is in its lowered state. The height of the bottom connecting plate is not higher than the height of the lifting jack when it is in its lowered state.

[0008] The rotating support includes a connecting plate, an ear plate, a rotating limiting plate, a rotating support plate, and a flange plate. The connecting plate is fixed to the middle connecting cross plate of the steel frame by bolts. The ear plate is connected to the connecting plate by welding. The rotating limiting plate is welded to the ear plate. The rotating support plate is movably connected to the ear plate. The flange plate is welded to the rotating support plate. The flange plate is provided with several bolt holes.

[0009] The rotating support plate is pinned to the ear plate.

[0010] The technical advantages of this utility model are as follows: 1. This utility model uses a jack installed at the bottom, which works in conjunction with a rotating support device to achieve rapid raising of the steel pipe support without removing the top equipment of the steel pipe support, effectively solving the problems of difficulty in raising the traditional steel pipe support and slow construction efficiency; 2. All devices of this utility model adopt a modular design and are connected by bolts to achieve rapid assembly and disassembly; 3. This utility model uses an adjustable rotating support device, which allows for the lifting of the steel pipe support and the continuation of standard sections by adjusting the position of the rotating support device.

[0011] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation structure of a steel pipe support bottom splicing device according to the present invention.

[0013] Figure 2 This is a top view schematic diagram of a steel pipe support bottom splicing device according to the present invention.

[0014] Figure 3 This is a schematic diagram of the main structure of a steel pipe support bottom splicing device according to this utility model.

[0015] Figure 4 This is a schematic diagram of the rotating support mechanism of this utility model.

[0016] Reference numerals in the attached drawings: 1-Steel pipe support, 2-Standard section of steel pipe support, 3-Bottom connection mechanism of steel pipe support, 4-Lifting jack, 5-Steel frame, 6-Rotating support, 7-Vertical support, 8-Connecting inclined plate, 9-Middle connecting horizontal plate, 10-Top connecting horizontal plate, 11-Bottom connecting horizontal plate, 12-Base plate, 13-Connecting plate, 14-Ear plate, 15-Rotation limit plate, 16-Rotation support plate, 17-Flange plate. Detailed Implementation Example 1

[0017] like Figures 1-4 As shown, a steel pipe support bottom connection device includes a steel pipe support bottom connection mechanism 3 and a lifting jack 4. The steel pipe support bottom connection mechanism 3 includes a steel frame 5 and a rotating support 6. The steel frame 5 is a frame structure, and two symmetrical rotating support 6 are fixedly connected inside it. The lifting jack 4 is located at the bottom of the steel frame 5 and directly below the rotating support 6. The rotating support 6 is used to fix the steel pipe support 1, and the lifting jack 4 is used to lift the standard section 2 of the steel pipe support upward to complete the connection with the lower part of the steel pipe support 1.

[0018] This utility model's steel frame is assembled from bolted angle steel and steel plates. During the bottom connection process after the steel pipe support is lifted into position, it serves as the load-bearing foundation for the rotating support, ensuring the safety and overall stability of the steel pipe support. After the steel pipe support is lifted into position, the rotating support is bolted to the steel pipe support flange, bearing the load of the steel pipe support during the bottom connection process. After connecting to the steel pipe support, the rotating support 6 completes the force system conversion as the lifting jack falls back. Then, a standard steel support section is connected from the steel frame installation port. The lifting jack is then used to lift the connected standard section and connect it to the original steel pipe support, completing the flange bolting. The lifting jack continues to lift, disconnecting the rotating support from the steel pipe support and rotating the rotating support back to its original position, completing the connection of a single standard steel pipe support section. This utility model uses a bottom-mounted jack in conjunction with the rotating support, achieving rapid heightening of the steel pipe support without removing the top equipment, effectively solving the problems of difficult heightening and slow construction efficiency associated with traditional steel pipe supports. Example 2

[0019] Based on Embodiment 1, in this embodiment, preferably, the steel frame 5 includes a vertical support 7, a middle connecting horizontal plate 9, a top connecting horizontal plate 10, a bottom connecting horizontal plate 11, and a base plate 12. The base plate 12 is welded to the vertical support 7, and the vertical support 7, the middle connecting horizontal plate 9, the top connecting horizontal plate 10, and the bottom connecting horizontal plate 11 are fixedly connected by high-strength bolts.

[0020] The steel frame 5 of this utility model includes a vertical support 7, a middle connecting horizontal plate 9, a top connecting horizontal plate 10, a bottom connecting horizontal plate 11, and a base plate 12. The vertical support is made of angle steel and is responsible for bearing the vertical force of the steel pipe support. The middle connecting horizontal plate 9, the top connecting horizontal plate 10, and the bottom connecting horizontal plate 11 are bolted to the vertical support to form an overall stable frame. The base plate is set at the bottom of the vertical support to reduce the local stress of the support rod and improve the overall stability of the external frame.

[0021] This utility model's steel frame 5 adopts a modular design, with each component quickly assembled using high-strength bolts. The rotating support system 6 is connected by pins and fixed to the steel frame 5 using high-strength bolts. This effectively improves on-site construction efficiency and allows for the design of steel components of various sizes and devices of different dimensions, better adapting to different direct steel pipe support splicing constructions. It can be widely used in various types of steel pipe support jacking operations. Example 3

[0022] Based on Embodiment 1 or Embodiment 2, in this embodiment, preferably, a connecting inclined plate 8 is provided in the frame space between the vertical support 7, the middle connecting horizontal plate 9, and the top connecting horizontal plate 10.

[0023] The present invention provides a connecting inclined plate 8 in the frame space between the vertical support 7, the middle connecting horizontal plate 9, and the top connecting horizontal plate 10 to ensure the structural stability of the steel frame 5. Example 4

[0024] Based on Embodiment 1 or Embodiment 3, in this embodiment, preferably, the lower side of the steel frame 5 is provided with a continuation interface, the height of the middle connecting horizontal plate 9 at the continuation interface is greater than the sum of the height of the lifting jack 4 in the fall state and the height of the steel pipe support standard section 2, and the height of the bottom connecting horizontal plate 11 is not higher than the height of the lifting jack 4 in the fall state.

[0025] The steel frame 5 of this utility model has a connecting interface on the lower side. The height of the middle connecting plate 9 at the connecting interface is greater than the sum of the height of the lifting jack 4 in its lowered state and the height of the standard steel pipe support section 2. The height of the bottom connecting plate 11 is not higher than the height of the lifting jack 4 in its lowered state. Each time the standard steel pipe support section 2 is installed from the connecting interface, the device bears the load of the upper steel pipe support 1. At this time, the lifting jack 4 is in the lowered state. The middle connecting plate 9 and the bottom connecting plate 11 do not affect the insertion of the standard section, ensuring that the standard steel pipe support section 2 can be installed in place. Example 5

[0026] Based on Embodiment 1 or Embodiment 4, in this embodiment, preferably, the rotating support 6 includes a connecting plate 13, an ear plate 14, a rotating limiting plate 15, a rotating support plate 16, and a flange plate 17. The connecting plate 13 is fixed to the middle connecting cross plate 9 of the steel frame by bolts. The ear plate 14 is connected to the connecting plate 13 by welding. The rotating limiting plate 15 is welded to the ear plate 14. The rotating support plate 16 is movably connected to the ear plate 14. The flange plate 17 is welded to the rotating support plate 16. The flange plate 17 is provided with several bolt holes.

[0027] The rotating support system of this utility model includes an ear plate mechanism, a rotating support plate, and a flange plate. The ear plate mechanism consists of two ear plates and a limiting plate. The end of the rotating support plate is provided with a pin hole to be pinned to the ear plate. The flange plate is welded to the end of the rotating connecting rod and connected to the steel pipe support flange by bolts. The ear plate mechanism is set on the vertical support of the steel frame to ensure that the overall device is safe and reliable under force. Example 6

[0028] Based on Embodiment 1 or Embodiment 5, in this embodiment, preferably, the rotating support plate 16 is pin-connected to the ear plate 14.

[0029] The rotating support plate 16 of this invention is pin-connected to the ear plate 14. The rotating support plate 16 can drive the flange plate 17 to rotate around the ear plate 14, thereby adjusting the position of the rotating support 6.

[0030] In practical use, this utility model includes the following steps:

[0031] S1. Conduct a comprehensive inspection of the equipment foundation and components to assess their overall condition and structural safety.

[0032] S2. Install the lifting jack 4, the standard section of steel pipe support 2, and the steel pipe support 1 in sequence;

[0033] S3. Install the bottom connecting mechanism 3 and the rotating support 6 of the steel pipe support;

[0034] S4, Control the lifting jacks 4, Lifting steel pipe support standard section 2;

[0035] S5. Adjust the support position of the rotating support 6 and bolt the flange plate 17 to the flange on the upper part of the steel pipe support standard section 2.

[0036] S6, the lifting jack 4 completes the force system conversion;

[0037] S7. Continue the standard section 2 of the steel pipe support from the lower installation port of the steel frame 5;

[0038] S8. Use jack 4 to lift the steel pipe support standard section 2 and connect it to the lower part of the previous steel pipe support standard section 2, and complete the bolt connection between the steel pipe support standard section 2 and the previous steel pipe support standard section 2.

[0039] S9. Unfasten the flange plate 17 from the flange plate at the top of the steel pipe support standard section 2, lift the jack 4 to lift, and adjust the rotating support device 6 to return the rotating support to its original position.

[0040] After the S10 steel pipe support standard section 2 is connected, a comprehensive inspection of the support system is carried out to assess the overall stability and safety of the support system and the bridge. Based on the monitoring data, necessary maintenance and reinforcement are carried out on the support system and the bridge.

[0041] S11. Repeating steps S4 to S10 can continuously extend and heighten the steel pipe support.

[0042] Step S2 includes the following steps:

[0043] S21. First, install the lifting jack 4 to the preset position and reinforce the lifting jack 4 to ensure stability during the lifting operation.

[0044] S22. After the lifting jack 4 is installed, continue to install a steel pipe support standard section 2 above the lifting jack 4.

[0045] S23. After the standard section 2 of the steel pipe support is installed, install the steel pipe support 1.

[0046] The S3 mentioned above includes the following steps:

[0047] S31. First, install the vertical support 7 in place, then install the connecting horizontal and diagonal plates to complete the assembly of the 5 steel frame groups;

[0048] S32. Install the rotating support 6 to the preset position of the steel frame 5;

[0049] S33. After the device is installed in place, check the accuracy of the installation position and the reliability of the connection method.

[0050] The S4 includes the following steps:

[0051] S41. Before the lifting operation of the hydraulic jack 4, inspect the device and steel pipe support 1 to ensure safety.

[0052] S42, Rotary support 6 of the recovery device, to avoid interfering with the lifting of the steel pipe support;

[0053] S43. Control the lifting jack 4 to lift to the predetermined position, ensuring that the rotating support 6 can rotate to below the flange of the steel pipe support standard section 2, which will facilitate subsequent operations.

[0054] The S5 includes the following steps:

[0055] S51. Adjust the support position of the rotating support 6 and rotate the flange plate 17 to the lower part of the flange on the upper part of the steel pipe support standard section 2.

[0056] S52. Control the lifting jack 4 to fall back until the flange on the upper part of the steel pipe support standard section 2 is aligned with the flange plate 17.

[0057] S53. Connect flange plate 17 to the flange on the upper part of steel pipe support standard section 2.

[0058] The S7 includes the following steps:

[0059] S71. After the hydraulic jack 4 has been lowered into place, a safety inspection shall be carried out on the steel frame 5 and the steel pipe support 1.

[0060] S72. Insert the standard section 2 of the steel pipe support from the continuation interface of the steel frame 5 and install it above the lifting jack 4.

[0061] The S9 mentioned above includes the following steps:

[0062] S91. After the steel pipe support standard section 2 is connected to the previous steel pipe support standard section 2, disconnect the connection between the rotating support 6 and the upper flange plate of the steel pipe support standard section 2.

[0063] S92. Lifting jack 4 lifts the standard section 2 of the steel pipe support to the design height, ensuring that the rotating support 6 is smoothly retracted and returned to its original position;

[0064] S93. Adjust the rotating support 6 to return it to its original position to avoid interfering with the subsequent jacking operation of the steel pipe support.

[0065] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom splicing device for steel pipe support, characterized in that: The system includes a steel pipe support bottom connection mechanism (3) and a lifting jack (4). The steel pipe support bottom connection mechanism (3) includes a steel frame (5) and a rotating support (6). The steel frame (5) is a frame structure with two symmetrical rotating supports (6) fixedly connected inside. The lifting jack (4) is located at the bottom of the steel frame (5) and directly below the rotating support (6). The rotating support (6) is used to fix the steel pipe support (1). The lifting jack (4) is used to lift the standard section (2) of the steel pipe support upward to complete the connection with the lower part of the steel pipe support (1).

2. The bottom splicing device for steel pipe support according to claim 1, characterized in that: The steel frame (5) includes a vertical support (7), a middle connecting horizontal plate (9), a top connecting horizontal plate (10), a bottom connecting horizontal plate (11), and a base plate (12). The base plate (12) is welded to the vertical support (7), and the vertical support (7), the middle connecting horizontal plate (9), the top connecting horizontal plate (10), and the bottom connecting horizontal plate (11) are fixedly connected by high-strength bolts.

3. The bottom splicing device for steel pipe support according to claim 2, characterized in that: A connecting inclined plate (8) is provided in the frame space between the vertical support (7), the middle connecting horizontal plate (9), and the top connecting horizontal plate (10).

4. The bottom splicing device for steel pipe support according to claim 2, characterized in that: The lower side of the steel frame (5) is provided with a continuation interface. The height of the middle connecting horizontal plate (9) at the continuation interface is greater than the sum of the height of the lifting jack (4) and the standard section (2) of the steel pipe support when the jack is in the fall state. The height of the bottom connecting horizontal plate (11) is not higher than the height of the lifting jack (4) when it is in the fall state.

5. The bottom splicing device for steel pipe support according to claim 2, characterized in that: The rotating support (6) includes a connecting plate (13), an ear plate (14), a rotating limiting plate (15), a rotating support plate (16), and a flange plate (17). The connecting plate (13) is fixed to the middle connecting cross plate (9) of the steel frame by bolts. The ear plate (14) is connected to the connecting plate (13) by welding. The rotating limiting plate (15) is welded to the ear plate (14). The rotating support plate (16) is movably connected to the ear plate (14). The flange plate (17) is welded to the rotating support plate (16). The flange plate (17) is provided with several bolt holes.

6. The bottom splicing device for steel pipe support according to claim 5, characterized in that: The rotating support plate (16) is pin-connected to the ear plate (14).

Images