Hoisting and positioning device for polygonal arch rib segments

Abstract

The application discloses a hoisting positioning device for polygonal arch rib segments and belongs to the technical field of bridge construction. A hoisting positioning device is arranged below the splicing gap of each arch rib segment. The fork is moved below the outer side of the arch rib segment in a half-enclosing manner through vertical movement. The inclined upward supporting column can accurately support and position the outer side of the polygonal arch rib segment. The supporting column is only required to be rotated and displaced to be moved to the side position of the arch rib segment. The hoisting positioning device is once built at the splicing position of the arch rib segment and can support the whole arch rib. After the building is completed, real-time adjustment is carried out, so that each arch rib segment at different positions can be fixed and supported. The hoisting positioning device is simple to position, quick to build, does not need to be welded, plays a temporary positioning role, is convenient to disassemble and can be repeatedly used. The hoisting positioning device has low requirements on construction personnel, reduces construction difficulty and improves hoisting efficiency.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, specifically relating to a hoisting and positioning device for a polygonal arch rib segment. Background Technology

[0002] The cross-river bridge is relatively long and structurally stable, serving to connect the two sides of the river for transportation. Primarily constructed with steel components hoisted together, the bridge mainly consists of the bridge deck and arch ribs. The arch ribs located on both sides of the bridge deck are steel pipe structures with polygonal cross-sections to enhance overall stability. The arch ribs are assembled from multiple segments through hoisting. (Refer to...) Figure 1 When hoisting the arch rib, the arch rib segments need to be lifted and moved into place in one go by crawler crane, and then connected by butt joints and welding. Therefore, a temporary support frame structure needs to be built under the arch rib. The common frame structure is a regular steel frame. Since the shape of the arch rib is different at each position, a temporary welding support structure is required at each splicing position to play a temporary positioning role. This positioning method requires high skills from the construction personnel and is difficult to disassemble and time-consuming to position. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a hoisting and positioning device for polygonal arch rib segments, which is quick to assemble, simple to position, and can support and position arch rib segments of different irregular shapes.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] The present invention includes a support column, the top of which is provided with a working platform. The working platform is located below the splicing gap of the arch rib segments. Two vertical columns are slidably mounted on the working platform. The working platform is provided with a locking structure to fix the position of the vertical columns. The top of the vertical columns is provided with a fork. The two forks are respectively located on the lower outer side of the two arch rib segments. The two sides of the fork are respectively threaded with abutment columns for abutting against the lower outer side of the arch rib segments. The end of the abutment column is a ball head.

[0006] Furthermore, the locking structure includes two concave columns, and the bottom surface of the working platform is provided with a support block for the concave columns to slide laterally. The two concave columns are joined together and surround the outside of the vertical column. Several annular grooves are arranged on the inner side of the concave columns, and several annular steps are arranged on the vertical column. Several locking screws are threaded onto the support block. The locking screws abut against the outside of the concave columns, so that the annular grooves of the concave columns are engaged with the annular steps and will not move back.

[0007] Furthermore, a traction column is fixedly provided on the outer side of the concave column, and the traction column slides through the support block.

[0008] Furthermore, the middle section of the support column is provided with a baffle, and a guide column is vertically provided on the baffle. A sliding hole is opened inward at the bottom end of the vertical column, and the guide column is slidably disposed in the sliding hole.

[0009] Furthermore, the cross-section of the vertical column is square.

[0010] Furthermore, the fork includes a fork base fixed to the support column and fork segments hinged to both ends of the fork base. The abutment is threadedly connected to the fork segments, and a support platform extends from the free end of the fork segments. An adjusting column is threadedly connected to the support platform, and the adjusting column is supported on the top surface of the working platform, so that the fork segments are located at the outer support position below the arch rib segment.

[0011] Furthermore, a safety net is provided on the outer edge of the work platform.

[0012] Furthermore, the work platform is also equipped with a ladder.

[0013] The beneficial effects of this invention are as follows:

[0014] In this invention, a hoisting and positioning device is installed below the splicing joint of each arch rib segment. Each hoisting and positioning device uses a two-point positioning method, with the fork and the abutment column positioned on the lower outer side of the multi-arch rib segment. This ensures that the lower outer sides of each arch rib segment are supported and positioned by two abutment columns at both ends, achieving a complete positioning and support effect. By vertically moving the fork, the fork is positioned on the lower outer side of the arch rib segment in a semi-enclosed shape. Then, the abutment column moves obliquely upward, providing precise support and positioning on the lower outer side of the polygonal arch rib segment. Only the abutment column needs to be rotated to move. This hoisting and positioning device can be moved to the side of the arch rib segment. By being erected once at the splicing position of the arch rib segment, it can support the entire arch rib. After the erection is completed, it can be adjusted in real time to fix the arch rib segment at different positions. This hoisting and positioning device is simple to position, quick to assemble, does not require welding, and serves as a temporary positioning device. It is easy to disassemble and can be erected at arch rib hoisting sites with different curvatures, shapes, and inclination angles. It can be reused. Furthermore, this hoisting and positioning device has low requirements for construction personnel, reduces construction difficulty, and improves hoisting efficiency.

[0015] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0017] Figure 1 This is a construction diagram of an embodiment of the present invention;

[0018] Figure 2 This is an overall schematic diagram of the positioning device according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the concave column structure according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the positioning device according to an embodiment of the present invention;

[0021] Figure 5 This is a partial schematic diagram of the support block according to an embodiment of the present invention;

[0022] Figure 6 This is a safety facility layout diagram of the positioning device according to an embodiment of the present invention;

[0023] The following are marked in the attached diagram: 1. Support column; 2. Working platform; 3. Arch rib segment; 4. Vertical column; 41. Ring step; 42. Sliding hole; 5. Locking structure; 51. Concave column; 511. Ring groove; 512. Traction column; 52. Support block; 53. Locking screw; 6. Fork; 61. Fork bottom; 62. Fork segment; 63. Support platform; 64. Adjusting column; 7. Support column; 8. Stop; 81. Guide column; 91. Safety net; 92. Ladder. Detailed Implementation

[0024] like Figures 1-6 As shown, this invention discloses a hoisting and positioning device for a polygonal arch rib segment 3, with reference to... Figure 2 The system includes a support column 1, a working platform 2 at the top of the support column 1, the working platform 2 being located below the splicing gap of the arch rib segment 3, two through holes on the working platform 2, two vertical columns 4 being vertically slidably mounted on the through holes, a locking structure 5 for fixing the position of the vertical columns 4 on the working platform 2, a fork 6 at the top of the vertical column 4, two forks 6 being located on the lower outer side of the two arch rib segments 3 respectively, and two forks 6 being threadedly connected to abutment columns 7 for abutting against the lower outer side of the arch rib segment 3, the end of the abutment column 7 being a ball head.

[0025] In this scheme, reference Figure 1 and Figure 2Each arch rib segment 3 has a lifting and positioning device located below its splicing joint. Each device uses a two-point positioning system (fork 6 and abutment 7) on the lower outer side of the multi-arch rib segment 3. This ensures that the lower outer sides of each arch rib segment 3 are supported and positioned by two abutments 7, achieving complete positioning and support. By vertically moving the fork 6 to its lower outer side, forming a semi-enclosed shape, and then by moving the abutment 7 diagonally upwards, precise support and positioning of the lower outer side of the polygonal arch rib segment 3 can be achieved. Simply rotating the abutment 7 is sufficient to position it... The device is displaced to move to the side position of arch rib segment 3. This hoisting and positioning device can support the entire arch rib by being erected once at the splicing position of arch rib segment 3. After the erection is completed, it can be adjusted in real time to fix and support the arch rib segment 3 at different positions. This hoisting and positioning device is simple to position, quick to assemble, does not require welding, and serves as a temporary positioning device. It is easy to disassemble and can be erected at arch rib hoisting sites with different curvatures, shapes, and inclination angles. It can be reused. Furthermore, this hoisting and positioning device has low requirements for construction personnel, reduces construction difficulty, and improves hoisting efficiency.

[0026] In further proposals, such as Figure 3 , Figure 4 and Figure 5 As shown, the locking structure 5 includes two concave columns 51. The bottom surface of the working platform 2 is provided with a support block 52 for the concave columns 51 to slide laterally. The two concave columns 51 are joined and surround the outside of the vertical column 4. Several annular grooves 511 are arranged on the inner side of the concave columns 51. Several annular steps 41 are arranged on the vertical column 4. Several locking screws 53 are threaded on the support block 52. The locking screws 53 abut against the outside of the concave columns 51, so that the annular grooves 511 of the concave columns 51 are engaged with the annular steps 41 and will not move back.

[0027] In this design, a locking structure 5 is provided for convenient positioning and secure locking. Two concave columns 51 surround the outside of the vertical column 4, and the vertical column 4 at different heights can be supported and limited by a number of annular grooves 511 and annular steps 41. The vertical movement of the concave columns 51 is restricted by the support block 52, so the vertical movement of the vertical column 4 is restricted by the concave columns 51 after being limited. The lateral movement of the concave columns 51 is fixed by the locking screw 53, so the lateral movement of the vertical column 4 is restricted by the concave columns 51 after being limited. When adjusting the height of the vertical column 4, the locking screw 53 is loosened, the concave columns 51 are moved laterally, and the vertical column 4 can be moved vertically. The vertical movement of the vertical column 4 is also carried out by hoisting equipment. After moving to a suitable height, the concave columns 51 are moved laterally so that the annular grooves 511 of the concave columns 51 engage with the annular steps 41 of the vertical column 4. Then the positioning operation of the column 7 can be performed. This locking structure 5 provides simple and stable positioning, ensuring the initial positioning of the vertical column 4.

[0028] In further proposals, such as Figure 3 As shown. A traction column 512 is also fixed on the outer side of the concave column 51. The traction column 512 slides through the support block 52. Through the traction column 512, the lateral displacement of the concave column 51 can be completely restricted, and the traction movement of the concave column 51 can be assisted.

[0029] In further proposals, such as Figure 2 and Figure 4 As shown, the middle section of the support column 1 is also provided with a baffle 8, and a guide column 81 is vertically provided on the baffle 8. The bottom end of the vertical column 4 is provided with a sliding hole 42, and the guide column 81 is slidably disposed in the sliding hole 42. The baffle 8 is used to support the lowest position of the vertical column 4 to prevent the vertical column 4 from falling, and the guide column 81 is used to limit the lateral displacement of the vertical column 4 when it is not positioned by the guide column 81, and to guide the vertical displacement of the vertical column 4.

[0030] In a further embodiment, the vertical column 4 has a square cross-section. The square vertical column 4, together with the concave column 51, can restrict the rotation of the axis of the vertical column 4 and prevent the rotation of the fork 6.

[0031] In a further embodiment, the fork 6 includes a fork base 61 fixedly connected to the support column 1 and fork segments 62 hinged to both ends of the fork base 61. The abutment column 7 is threadedly connected to the fork segments 62. The free end of the fork segments 62 extends into a support platform 63. An adjusting column 64 is threadedly connected to the support platform 63. The adjusting column 64 is supported on the top surface of the working platform 2, so that the fork segments 62 are located in the outer support position below the arch rib segment 3.

[0032] In this structure, the adjusting column 64 is used to support the unfolding angle of the fork 6. The adjusting column 64 is adjustable to adapt to the vertical column 4 after different height adjustments. With the support of the adjusting column 64, the fork 6 can have a more stable support structure. After the arch rib is formed and fixed, it is convenient to disassemble the fork 6. That is, first remove the abutment column 7, remove the adjusting column 64, unfold the fork 6, and remove the worktable to avoid the arch rib interfering with the fork 6 when disassembling the worktable.

[0033] In further proposals, such as Figure 6 As shown, a safety net 91 is provided on the outer edge of the work platform 2, and a ladder 92 is also provided on the work platform 2. The safety net 91 and the ladder 92 are auxiliary equipment to assist construction personnel in construction, to assist construction and ensure safety.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A hoisting and positioning device for polygonal arch rib segments, characterized in that: The utility model provides a support column (1), the top of support column (1) is equipped with work platform (2), work platform (2) is located under arch rib segment (3) joint gap, two vertical columns (4) are vertically slidably arranged on work platform (2), locking structure (5) is arranged on work platform (2) and is used for fixing the position of vertical column (4), the top of vertical column (4) is equipped with fork (6), two fork (6) are located respectively under the outer side of two arch rib segment (3), the outer side of fork (6) is respectively screw connected with the column (7) for abutting under the arch rib segment (3), the end of column (7) is spherical, locking structure (5) includes two concave columns (51), the bottom of work platform (2) is equipped with support block (52) for the transverse sliding of concave column (51), two concave columns (51) are connected around the outer side of vertical column (4), the inner side of concave column (51) is arranged with a plurality of ring grooves (511), a plurality of ring steps (41) are arranged on vertical column (4), a plurality of locking screws (53) are screw connected on support block (52), locking screw (53) abuts at the outer side of concave column (51), so that the ring groove (511) of concave column (51) is clamped into ring step (41) and does not move back, fork (6) includes fork bottom (61) fixed with support column (1) and fork segment (62) hinged at the both ends of fork bottom (61), column (7) is screw connected on fork segment (62), the free end of fork segment (62) extends out support platform (63), adjusting column (64) is screw connected on support platform (63), adjusting column (64) is supported on the top of work platform (2), so that fork segment (62) is located under the outer side of arch rib segment (3) support position.

2. A hoisting and positioning device for polygonal arch rib segments according to claim 1, characterized in that: The outer side of the concave column (51) is further fixed with a traction column (512), which is slidably arranged on the support block (52).

3. The hoisting and positioning device for polygonal arch rib segments according to claim 1, characterized in that: The middle segment of the support column (1) is further provided with a blocking table (8), a guide column (81) is vertically arranged on the blocking table (8), and a sliding hole (42) is formed in the bottom end of the vertical column (4) and inwardly arranged.

4. The hoisting and positioning device for polygonal arch rib segments according to claim 1, characterized in that: The vertical column (4) is square in cross section.

5. The hoisting and positioning device for polygonal arch rib segments according to claim 1, characterized in that: A safety fence (91) is arranged on the outer edge of the work platform (2).

6. The hoisting and positioning device of a polygonal arch rib segment according to claim 1, characterized in that: A crawling ladder (92) is further arranged on the work platform (2).

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