A rapid alignment device for steel arch ribs and its construction method

Abstract

This invention provides a rapid alignment device for steel arch ribs and its construction method, comprising an erected steel arch rib and a steel arch rib to be erected. Both the erected and unerring steel arch ribs have connecting sections at their joint ends. Each section is equipped with a pull-and-position mechanism and a positioning matching mechanism that engage with the connecting sections for positioning and fixing. By setting pull-and-position mechanisms and positioning matching mechanisms at the joint ends of the erected and unerring steel arch ribs, forming a coordinated positioning and fixing structure with the connecting sections, the efficiency and safety of high-altitude docking operations are significantly improved. The pull-and-position mechanism actively applies a pulling force, ensuring a tight fit between the two arch rib segments, effectively overcoming positional shifts caused by strong winds in the canyon. This method is significantly more efficient than traditional manual alignment methods that rely on hand-operated hoists, crowbars, and jacks.

Description

Technical Field

[0001] This invention relates to the field of steel arch rib installation, and in particular to a rapid alignment device for steel arch ribs and its construction method. Background Technology

[0002] When constructing steel arch bridges in high mountain and canyon areas, cable cranes are typically used. The cable crane lifts entire sections of the steel truss arch rib from the assembly area and moves them laterally along the main cable to the installation location. This operation has a long cycle time, and the bridge site area is often affected by the canyon's "narrowing effect," resulting in unstable strong winds with high speeds and sudden changes in wind direction. This leads to an extremely limited effective construction window for arch rib hoisting. To ensure construction safety, the steel arch rib must be quickly and accurately aligned and installed at multiple nodes within this short window; otherwise, not only will it be inefficient, but it will also significantly increase the risks of working at height.

[0003] Currently, the aerial alignment of steel arch ribs mainly relies on traditional tools such as hand-operated hoists, crowbars, and jacks. This method suffers from limitations in operating space, low adjustment precision, and difficulty in coordination, making it difficult to meet the requirements for efficient, safe, and precise installation. Therefore, this paper proposes a rapid alignment device for steel arch ribs and its construction method to solve these problems. Summary of the Invention

[0004] The main objective of this invention is to provide a rapid alignment device for steel arch ribs and its construction method, which solves the problems of difficult alignment construction, low efficiency, and high construction safety risks during the installation of steel arch bridge ribs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a rapid alignment device for steel arch ribs and its construction method, including erected steel arch ribs and steel arch ribs to be erected. The joint ends of the erected steel arch ribs and the steel arch ribs to be erected are provided with arch rib joint parts for connecting each other, and the two are respectively provided with a pull-and-position mechanism and a positioning and matching mechanism that can form a positioning and fixing cooperation with the arch rib joint parts, for positioning and pulling together the erected steel arch ribs and the steel arch ribs to be erected.

[0006] In the preferred embodiment, the arch rib docking part includes a ring array of supporting stiffeners. A connecting flange is provided at one end of the supporting stiffeners near the docking side of the erected steel arch rib and the steel arch rib to be erected. An isolation groove is formed between the inner ring of the connecting flange and the outer wall surface of the erected steel arch rib. A slot corresponding to the isolation groove is provided on the supporting stiffener.

[0007] In the preferred embodiment, the pull-and positioning mechanism and the positioning matching mechanism respectively include a first mounting base and a second mounting base that can be installed between two adjacent support ribs and form a snap-fit ​​relationship with the slot. One of the first mounting base and the second mounting base is provided with a guide socket, and the other is provided with a guide socket. The guide socket and the guide socket are arranged to correspond to the isolation slot.

[0008] In a preferred embodiment, the pull-open positioning mechanism further includes a pull-open device disposed on the first mounting base; The positioning and matching mechanism also includes a tension component disposed on the second mounting base and corresponding to the pulling and closing device.

[0009] In the preferred embodiment, both the first and second mounting bases include a base body. An abutment frame is provided at the top of the base body near the connecting flange. The abutment frame can abut against the back of the connecting flange. The shapes of the base body and the abutment frame are adapted to the space between two adjacent support ribs. Both sides of the base body are provided with elastic telescopic clips that mate with the slots. In the preferred embodiment, the elastic telescopic locking component includes a telescopic groove provided on the side of the base body, a locking block that can be telescopically fitted in the telescopic groove, the locking block can extend and retract from the telescopic groove, and the shape of the locking block is adapted to the locking groove, and a telescopic spring that abuts against the locking block is provided in the telescopic groove.

[0010] In the preferred embodiment, a device fixing seat is provided on the top of the first mounting base. The device fixing seat is a wedge-shaped seat with a T-shaped cross-section. The pull-opening device includes a fastening base that can cooperate with the device fixing seat, a support frame disposed on the top of the fastening base, and a pull-opening assembly disposed on the support frame; The fastening base includes a fastening seat, the bottom of which is provided with a groove, and two fastening components that can cooperate with the device fixing seat are symmetrically arranged in the groove; The fastening assembly includes a clamping member that can slide and engage with the side of the device mounting base. The clamping member is slidably disposed in a groove. A tensioning assembly is provided between the clamping member and the side wall of the groove to keep the clamping member in contact with the device mounting base. The tension assembly includes a perforation on the side wall of the groove, a telescopic rod that can move through the perforation is provided on the side of the clamping member, a compression spring is fitted on the outside of the telescopic rod between the clamping member and the side wall of the groove, and a limit plate is provided at the outer end of the telescopic rod; The front end of the clamping component is provided with a guide slope.

[0011] In the preferred embodiment, the pulling and closing assembly includes an annular ball joint housing mounted on the support frame. A pulling and closing telescopic cylinder is disposed through the annular ball joint housing. The outside of the pulling and closing telescopic cylinder is provided with a ball head that forms a spherical pair with the annular ball joint housing. The tail end of the pulling and closing telescopic cylinder is mounted with an annular array of adjusting telescopic cylinders via a ball joint. The other end of the adjusting telescopic cylinder is mounted on the support frame via a ball joint. The telescopic end of the pulling and closing telescopic cylinder is located at the docking end of the supported steel arch rib, and is provided with an opening and closing gripper. The tension component specifically includes a vertical plate, and a pull ring corresponding to the opening and closing claws is provided on the side of the vertical plate near the joint end of the steel arch rib to be erected.

[0012] In the preferred embodiment, the telescopic end of the pull-opening telescopic cylinder is also equipped with a lifting hook mechanism, which is used to hook the other end of the connecting flange when the pull-opening device is installed. The lifting hook mechanism includes a sleeve fixed on the telescopic end of the telescopic cylinder, opening and closing grippers arranged sequentially on the other side of the sleeve, a hook plate telescopically provided in the sleeve, a support frame fixed on the top of the sleeve, a top plate fixed on the top of the support frame, a lifting telescopic cylinder installed on the top plate, a sliding plate that slides with the support frame on the top of the hook plate, and the telescopic end of the lifting telescopic cylinder movably passing through the top plate and connecting with the sliding plate. The bottom end of the hook plate is equipped with an anti-detachment plate that is larger than the opening at the bottom of the sleeve; The upper and lower parts of the hook plate are provided with pin holes for fixing the raised and lowered states. The sleeve is provided with a socket that can correspond to any of the pin holes, and a pin is inserted between the socket and any of the pin holes.

[0013] The method includes: S1. Install the pulling and positioning mechanism and the positioning matching mechanism onto the erected steel arch rib and the steel arch rib to be erected, respectively. S2. Use a cable crane to hoist the steel arch ribs to be erected to the installation position; S3. After the steel arch rib to be erected is hoisted to the initial positioning position, extend the telescopic cylinder of the positioning mechanism and simultaneously open the clamping jaws. Adjust the position of the clamping jaws by adjusting the telescopic cylinder according to the position of the pull ring of the positioning matching mechanism. S4. Once the opening and closing grippers are in place, control them to close and capture the pull ring. The telescopic cylinder retracts, and under the simultaneous action of the cable crane, the steel arch rib to be erected is pulled towards the already erected steel arch rib. During this process, control and adjust the telescopic cylinder to reset, and under the action of the guide socket and guide outlet, pull the steel arch rib to be erected to the precise installation position and provide the initial pre-tightening force required for bolt connection, thus completing the bolt connection.

[0014] This invention provides a rapid alignment device for steel arch ribs and its construction method. By setting a pull-and-position mechanism and a positioning and matching mechanism at the docking ends of the erected steel arch ribs and the steel arch ribs to be erected, respectively, and forming a cooperative positioning and fixing structure with the docking part of the arch ribs, the efficiency and safety of high-altitude docking operations are significantly improved. The pull-and-position mechanism actively applies a pulling force to make the two sections of the arch ribs fit tightly together, effectively overcoming the positional displacement caused by strong winds in the canyon. Compared with the traditional manual alignment method that relies on hand-operated hoists, crowbars and jacks, this solution greatly shortens the time for aerial adjustment, reduces the intensity and risk of high-altitude operations, and ensures that the installation is completed efficiently within the limited construction window. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an overall structural diagram of the invention; Figure 2 This is the present invention. Figure 1 Another perspective on the structure diagram; Figure 3 This is a structural diagram of the arch rib joint of the present invention; Figure 4 This is a structural diagram of the supporting ribs of the present invention; Figure 5 This is a structural diagram of the pull-and-position mechanism of the present invention; Figure 6 This is a structural diagram of the positioning and matching mechanism of the present invention; Figure 7 This is a structural diagram of the first mounting base and the second mounting base of the present invention; Figure 8 This is a half-sectional view of the elastic telescopic clip of the present invention; Figure 9 This is an exploded structural diagram of the pull-and-position mechanism of the present invention; Figure 10 This is a connection structure diagram of the first mounting base and the device fixing seat of the present invention; Figure 11 This is a structural diagram of the pulling and closing device of the present invention; Figure 12 This is the present invention. Figure 11 Top view of the structure; Figure 13 This is the present invention. Figure 11 A half-section structural diagram; Figure 14 This is a half-sectional view of the fastening base of the present invention; Figure 15 This is an exploded structural diagram of the fastening base of the present invention; Figure 16 This is a top view of the clamping component of the present invention; Figure 17 This is a structural diagram of the lifting hook mechanism of the present invention; Figure 18 This is a flowchart illustrating the installation process of the first and second mounting bases of the present invention. Figure 19 This is a side view of the connection structure between the elastic telescopic card and the card slot of the present invention; Figure 20 This is a flowchart of the installation process of the clamping component of the present invention; Figure 21 This is a connection structure diagram of the lifting hook mechanism and the arch rib docking part of the present invention; Figure 22 This is a flowchart illustrating the tensioning process between the erected steel arch ribs and the steel arch ribs to be erected in this invention. Figure 23 This is a diagram of the overall hoisting structure of the present invention.

[0016] In the diagram: 1. Erected steel arch rib; 2. Steel arch rib to be erected; 3. Arch rib joint; 301. Support rib; 302. Connecting flange; 303. Isolation groove; 3010. Pull-and-close positioning mechanism; 4. First mounting base; 40. Seat body; 401. Contact frame; 402. Clearance cavity; 4020. Elastic telescopic clamp; 403. Telescopic cavity; 4030. Limiting groove; 4031. Locking block; 4032. Limiting block; 4033. Telescopic spring; 4034. Guide socket; 41. Device fixing seat; 42. Pull-and-close device; 430. Fastening base; 4300. Fastening seat; 4301. Groove; 4302. Sliding groove; 4303. Perforation; 4304. Clamping piece; 4. Sliding block. 305; Telescopic rod; 4306; Limiting plate; 4307; Compression spring; 4308; Guide slope; 4309; Support frame; 431; Annular ball hinge housing; 432; Pull-open telescopic cylinder; 433; Adjustable telescopic cylinder; 434; Ball head; 435; Lifting hook mechanism; 436; Sleeve; 4360; Support; 4361; Top plate; 4362; Lifting telescopic cylinder; 4363; Hook plate; 4364; Sliding plate; 4365; Anti-detachment plate; 4366; Insertion hole; 4367; Pin hole; 4368; Pin; 4369; Opening and closing gripper; 437; Positioning matching mechanism; 5; Second mounting base; 50; Guide socket; 51; Tension assembly; 52; Upright plate; 520; Pull ring; 521. Detailed Implementation

[0017] Example 1 like Figure 1-23 As shown, a rapid alignment device for steel arch ribs includes an erected steel arch rib 1, a steel arch rib to be erected 2, an arch rib docking part 3, a pulling and positioning mechanism 4, and a positioning and matching mechanism 5.

[0018] The arch rib docking part 3 is provided on the docking end of the erected steel arch rib 1 and the steel arch rib 2 to be erected. Specifically, it includes a ring array of supporting stiffeners 301 on the outside of the erected steel arch rib 1 or the steel arch rib 2 to be erected. The bottom end of the supporting stiffeners 301 is fixed to the outside of the erected steel arch rib 1 or the steel arch rib 2 to be erected by welding. The other end is located on the rear side of the docking end face of the erected steel arch rib 1 and the steel arch rib 2 to be erected, and a connecting flange 302 is welded on it. The end face of the connecting flange 302 is flush with the docking end face of the erected steel arch rib 1 or the steel arch rib 2 to be erected. An isolation groove 303 is formed between the inner ring of the connecting flange 302 and the outer wall surface of the erected steel arch rib 1.

[0019] In addition, the support rib plate 301 is provided with a slot 3010 corresponding to the isolation groove 303, which facilitates the installation of the pull-and-close positioning mechanism 4 and the positioning matching mechanism 5.

[0020] The pull-and-position mechanism 4 and the positioning and matching mechanism 5 respectively include a first mounting base 40 and a second mounting base 50 that can be installed between two adjacent support ribs 301. Both include a seat body 401. The top of the seat body 401 near the connecting flange 302 is provided with an abutment frame 402. The shapes of the seat body 401 and the abutment frame 402 are adapted to the space between the two adjacent support ribs 301. The abutment frame 402 can abut against the back of the connecting flange 302 and is provided with a clearance cavity 4020 to avoid the mounting holes on the connecting flange 302, thereby avoiding interference with the installation of threaded fasteners. When the seat body 401 and the abutment frame 402 are installed between the two adjacent support ribs 301, the support ribs 301 on both sides and the connecting flange 302 together form a three-way limit to achieve stable positioning. In this embodiment, both the erected steel arch rib 1 and the steel arch rib 2 to be erected are cylindrical, and the spatial cross-section between two adjacent supporting stiffeners 301 is an "isosceles trapezoid shape".

[0021] The seat 401 is also provided with an elastic telescopic locking member 403 that can cooperate with the locking slots 3010 on both sides. The elastic telescopic locking member 403 can cooperate with the locking slots 3010 on the supporting ribs 301 on both sides, thereby locking the seat 401 based on the above three-way limiting.

[0022] The elastic telescopic locking component 403 includes a telescopic groove 4030 provided on the side of the base 401. A locking block 4032 is telescopically fitted in the telescopic groove 4030. The locking block 4032 can extend and retract from the telescopic groove 4030, and the shape of the locking block 4032 is adapted to the groove 3010. A telescopic spring 4034 is provided in the telescopic groove 4032 to abut against the locking block 4032, so that the locking block 4032 can be kept in an extended state under the action of the telescopic spring 4034. At the same time, when the locking block 4032 is subjected to pressure, it can compress the telescopic spring 4034 to achieve the effect of retracting into the telescopic groove 4030. Furthermore, when the pressure is removed, the telescopic spring 4034 can achieve a quick reset effect.

[0023] In a preferred embodiment, in order to stably achieve the effect of the locking block 4032 extending and retracting from the telescopic groove 4030, limiting grooves 4031 are symmetrically provided on the inner wall surfaces of the telescopic groove 4030, and a limiting block 4033 that slides with the limiting groove 4031 is provided at one end of the locking block 4032 located in the telescopic groove 4030, thereby achieving a stable telescopic effect.

[0024] In this embodiment, the base 401 can be installed from top to bottom. Utilizing the space between two adjacent support ribs 301, when the locking block 4032 abuts against the side wall of the support rib 301, the base 401 can be retracted to continue downward installation until the base 401 is in place. At this point, the locking block 4032 loses pressure from the support rib 301 and resets under the action of the telescopic spring 4034, engaging with the slot 3010. This completes the stable installation of the first mounting base 40 or the second mounting base 50. When removal is required, the locking block 4032 is pressed inward to disengage it from the slot 3010, and then the base 401 can be lifted. This design allows for convenient installation while ensuring the positional accuracy of subsequent devices.

[0025] One of the first mounting base 40 and the second mounting base 50 is provided with a guide socket 41, and the other is provided with a corresponding guide receptacle 51. The guide socket 41 and the guide receptacle 51 are specifically located on opposite ends of the two bases 401. The guide socket 41 and the guide receptacle 51 are compatible conical structures. Through their cooperation during the docking process, they can achieve the function of positioning and guidance. At the same time, the guide socket 41 and the guide receptacle 51 are arranged to correspond to the isolation groove 303. The guide receptacle 51 protrudes through the isolation groove 303, and the guide socket 41 is exposed through the isolation groove 303. This design can prevent the guide socket 41 or the guide receptacle 51 from being blocked by the arch rib docking part 3, so that it can be smoothly inserted and play a guiding role during subsequent docking.

[0026] The first mounting base 40 has a device fixing seat 42 on its top body 401. The device fixing seat 42 is a wedge-shaped seat with a T-shaped cross section. The end of the device fixing seat 42 away from the abutting frame 402 is a narrow end.

[0027] The pull-open positioning mechanism 4 also includes a pull-open device 43 installed on the device fixing seat 42. The pull-open device 43 includes a fastening base 430 that can cooperate with the device fixing seat 42, a support frame 431 disposed on the top of the fastening base 430, and a pull-open assembly disposed on the support frame 431.

[0028] The fastening base 430 includes a fastening seat 4300. The bottom of the fastening seat 4300 is provided with a groove 4301. Two fastening components that can cooperate with the device fixing seat 42 are symmetrically arranged in the groove 4301. The fastening components include clamping members 4304 that can slide and cooperate with the side of the device fixing seat 42. The clamping members 4304 are slidably arranged in the groove 4301. A tensioning component is provided between the clamping members 4304 and the side wall of the groove 4301 to keep the clamping members 4304 in contact with the device fixing seat 42.

[0029] The tension assembly includes a through hole 4303 on the side wall of the groove 4301. A telescopic rod 4306 is provided on the side of the clamping member 4304, which movably passes through the through hole 4303. A compression spring 4308 is fitted on the outside of the telescopic rod 4306 between the clamping member 4304 and the side wall of the groove 4301. A limit plate 4307 is provided at the outer end of the telescopic rod 4306, so that the clamping member 4304 is kept in a clamping state under the tension of the compression spring 4308. As the width of the device fixing seat 42 changes, the compression spring 4308 can be compressed to adjust its spacing. The limit plate 4307 is used to limit the minimum spacing.

[0030] In the preferred embodiment, two sliding grooves 4302 are provided on the top wall of the groove 4301, and a sliding block 4305 is provided at the bottom of the clamping member 4304 to slide in cooperation with the sliding grooves 4302. The sliding block 4305 and the sliding groove 4302, and the sliding groove 4302 and the sliding block 4305 are a compatible T-shaped structure, thereby ensuring stability during the spacing adjustment process.

[0031] In the preferred embodiment, the clamping member 4304 has an L-shaped cross section and a guide slope 4309 at its front end, which facilitates the initial engagement with the device fixing seat 42.

[0032] This design allows the fastening base 430 to be inserted into the narrow end of the device fixing seat 42, and achieves a fastening effect as it is gradually inserted into the device fixing seat 42. It also satisfies the reverse support effect during the pulling and closing process. In addition, when it needs to be removed, it can be removed by reverse pushing.

[0033] The support frame 431 is vertically mounted on top of the fastening base 430, and stiffening plates are also provided on both sides of the bottom between the support frame and the fastening base 430 to ensure the stability of the support.

[0034] The pulling and closing assembly includes an annular ball joint housing 432 mounted on the support frame 431. A pulling and closing telescopic cylinder 433 is disposed through the annular ball joint housing 432. The pulling and closing telescopic cylinder 433 has a ball head 435 on its outside that forms a spherical pair with the annular ball joint housing 432. The pulling and closing telescopic cylinder 433 can rotate in three degrees of freedom within the annular ball joint housing 432 through the ball head 435. An adjusting telescopic cylinder 434 is mounted on the tail end of the pulling and closing telescopic cylinder 433 via a ball joint. There are three adjusting telescopic cylinders 434, which are distributed equidistantly in a ring. The other end of the adjusting telescopic cylinder 434 is mounted on the support frame 431 via a ball joint. Thus, the angle of the pulling and closing telescopic cylinder 433 can be adjusted by extending and retracting the three adjusting telescopic cylinders 434. The telescopic end of the pulling and closing telescopic cylinder 433 is located at the docking end of the supported steel arch rib 1, and an opening and closing gripper 437 is provided on it.

[0035] It should be noted that in this embodiment, both the pull-open telescopic cylinder 433 and the adjusting telescopic cylinder 434 are hydraulic telescopic cylinders, and the opening and closing gripper 437 is a commercially available hydraulic gripper that can achieve the effect of clamping and releasing the target object. Therefore, it will not be described in detail here.

[0036] This design allows for the gripping and pulling of the steel arch rib 2 to be erected, achieved through the extension and retraction of the telescopic cylinder 433 and the clamping effect of the opening and closing gripper 437. During this process, the angle of the telescopic cylinder 433 can be adjusted by extending and retracting the telescopic cylinder 434 to accommodate the positional difference between the erected steel arch rib 1 and the steel arch rib 2 to be erected before docking. Furthermore, during the pulling and closing process, the docking and positioning of the two can be achieved by resetting.

[0037] In a preferred embodiment, to facilitate the installation of the pulling and closing device 43, a lifting hook mechanism 436 is also provided on the telescopic end of the pulling and closing telescopic cylinder 433. This mechanism is used to hook the pulling and closing device 43 to the other end of the connecting flange 302 during installation, thereby utilizing the retraction of the pulling and closing telescopic cylinder 433 to achieve its own installation.

[0038] The lifting hook mechanism 436 includes a sleeve 4360 fixed to the telescopic end of the telescopic cylinder 433. Both the upper and lower ends of the sleeve 4360 are open. The opening and closing gripper 437 is fixed to the other side of the sleeve 4360. A hook plate 4364 is telescopically provided in the sleeve 4360. When the hook plate 4364 is fully lowered, it can hook with the connecting flange 302. A support frame 4361 is fixed to the top of the sleeve 4360. The support frame 4361 consists of four uprights located at the four corners of the top of the sleeve 4360. The structure consists of a support frame 4361 with a top plate 4362 fixed on top, a lifting telescopic cylinder 4363 mounted on the top plate 4362, and a sliding plate 4365 on the top of the hook plate 4364 that slides in cooperation with the support frame 4361. The sliding plate 4365 is slidably fitted onto the outside of the upright through holes at its four corners. The telescopic end of the lifting telescopic cylinder 4363 moves through the top plate 4362 and connects with the sliding plate 4365, so that the telescopic movement of the hook plate 4364 can be controlled by the telescopic movement of the lifting telescopic cylinder 4363.

[0039] In this embodiment, the lifting telescopic cylinder 4363 is a hydraulic telescopic cylinder.

[0040] In a preferred embodiment, the bottom end of the hook plate 4364 is provided with an anti-detachment plate 4366, which is larger than the bottom opening of the sleeve 4360, to limit the highest position of the hook plate 4364.

[0041] In the preferred embodiment, in order to maintain the position of the hook plate 4364 stably for a long time, the upper and lower parts of the hook plate 4364 are provided with pin holes 4368. The two pin holes 4368 are used to fix the two states of raising and lowering, respectively. The sleeve 4360 is provided with a insertion hole 4367 that can correspond to any pin hole 4368. A pin 4369 is inserted between the insertion hole 4367 and any pin hole 4368.

[0042] During installation, the telescopic rod of the telescopic cylinder 433 is extended so that the lifting hook mechanism 436 is located on the mating side of the connecting flange 302. Then, the pulling device 43 is placed on the first mounting base 40, and the fastening component of the fastening base 430 is inserted into the narrow end of the device fixing seat 42. Then, after the hook plate 4364 of the lifting hook mechanism 436 is lowered, the telescopic rod of the telescopic cylinder 433 is retracted so that the hook plate 4364 is in contact with the mating side of the connecting flange 302. The telescopic rod is retracted further so that the fastening component of the fastening base 430 slides on the device fixing seat 42 until it is locked.

[0043] The positioning and matching mechanism 5 also includes a tension component 52 set on the second mounting base 50. The tension component 52 specifically includes a vertical plate 520. A pull ring 521 corresponding to the opening and closing claw 437 is provided on the side of the vertical plate 520 near the docking end of the steel arch rib 2 to be erected. The opening and closing claw 437 achieves the traction effect by grabbing the pull ring 521.

[0044] Example 2 Further explanation in conjunction with Example 1, such as Figure 22-23 The structure shown illustrates a construction method for a rapid alignment device for steel arch ribs, the method comprising: S1. Install the pulling and positioning mechanism 4 and the positioning and matching mechanism 5 onto the erected steel arch rib 1 and the steel arch rib to be erected 2, respectively.

[0045] S2. The steel arch rib 2 to be erected is hoisted to the installation position using a cable crane.

[0046] S3. After the steel arch rib 2 to be erected is hoisted to the initial positioning position, the telescopic cylinder 433 of the positioning mechanism 4 is extended, and the opening and closing gripper 437 is in the open state. According to the position of the pull ring 521 of the positioning matching mechanism 5, the position of the opening and closing gripper 437 is adjusted by adjusting the telescopic cylinder 434.

[0047] S4. After the opening and closing gripper 437 is in place, control it to close to capture the pull ring 521, pull the telescopic cylinder 433 back, and under the action of the cable crane, pull the steel arch rib 2 to be erected towards the steel arch rib 1 already erected. During this process, control the telescopic cylinder 434 to reset, and under the action of the guide socket 41 and the guide socket 51, pull the steel arch rib 2 to be erected to the precise installation position and provide the initial pre-tightening force required for bolt connection, and the bolt connection can be completed.

[0048] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A rapid alignment device for steel arch ribs, comprising an erected steel arch rib (1) and a steel arch rib to be erected (2), characterized in that: Both the erected steel arch rib (1) and the steel arch rib to be erected (2) are provided with arch rib docking parts (3) for connecting each other, and both are provided with a pull-and-position mechanism (4) and a positioning matching mechanism (5) that can form a positioning and fixing cooperation with the arch rib docking parts (3), for positioning and pulling together of the erected steel arch rib (1) and the steel arch rib to be erected (2); The arch rib docking part (3) includes a ring array of support ribs (301). A connecting flange (302) is provided at one end of the support rib (301) near the docking side of the already erected steel arch rib (1) and the steel arch rib (2) to be erected. An isolation groove (303) is formed between the inner ring of the connecting flange (302) and the outer wall surface of the already erected steel arch rib (1). A slot (3010) corresponding to the isolation groove (303) is provided on the support rib (301). The pull-and-position mechanism (4) and the positioning and matching mechanism (5) respectively include a first mounting base (40) and a second mounting base (50) that can be installed between two adjacent support ribs (301) and form a snap-fit ​​relationship with the slot (3010). One of the first mounting base (40) and the second mounting base (50) is provided with a guide socket (41), and the other is provided with a guide socket (51). The guide socket (41) and the guide socket (51) are arranged to correspond to the isolation groove (303). The pull-open positioning mechanism (4) also includes a pull-open device (43) disposed on the first mounting base (40); The positioning and matching mechanism (5) also includes a tension component (52) disposed on the second mounting base (50) and corresponding to the pulling device (43); Both the first mounting base (40) and the second mounting base (50) include a base (401); The first mounting base (40) has a device fixing seat (42) on the top of the seat (401). The pull-open device (43) includes a fastening base (430) that can cooperate with the device fixing seat (42), a support frame (431) disposed on the top of the fastening base (430), and a pull-open assembly disposed on the support frame (431); The pulling assembly includes an annular ball joint housing (432) mounted on the support frame (431). A pulling telescopic cylinder (433) is disposed through the annular ball joint housing (432). A ball head (435) is disposed on the outside of the pulling telescopic cylinder (433) to form a spherical pair with the annular ball joint housing (432). An annular array of adjusting telescopic cylinders (434) is mounted on the tail end of the pulling telescopic cylinder (433) via a ball joint. The other end of the adjusting telescopic cylinder (434) is mounted on the support frame (431) via a ball joint. The telescopic end of the pulling telescopic cylinder (433) is located at the docking end of the supported steel arch rib (1) and is provided with an opening and closing gripper (437). The tension component (52) specifically includes a vertical plate (520), and a pull ring (521) corresponding to the opening and closing claw (437) is provided on the side of the vertical plate (520) near the docking end of the steel arch rib (2) to be erected.

2. The rapid alignment device for steel arch ribs according to claim 1, characterized in that: The top of the seat (401) near the connecting flange (302) is provided with an abutment frame (402). The abutment frame (402) can abut against the back of the connecting flange (302). The shape of the seat (401) and the abutment frame (402) is adapted to the space between two adjacent support ribs (301). Both sides of the seat (401) are provided with elastic telescopic clips (403) that cooperate with the slot (3010).

3. The rapid alignment device for steel arch ribs according to claim 2, characterized in that: The elastic telescopic locking component (403) includes a telescopic groove (4030) provided on the side of the base (401). A locking block (4032) is telescopically fitted in the telescopic groove (4030). The locking block (4032) can extend and retract from the telescopic groove (4030), and the shape of the locking block (4032) is adapted to the groove (3010). A telescopic spring (4034) is provided in the telescopic groove (4030) to abut against the locking block (4032).

4. The rapid alignment device for steel arch ribs according to claim 1, characterized in that: The device mounting base (42) is a wedge-shaped base with a T-shaped cross section; The fastening base (430) includes a fastening seat (4300), the bottom of which is provided with a groove (4301), and two fastening components that can cooperate with the device fixing seat (42) are symmetrically arranged in the groove (4301). The fastening assembly includes a clamping member (4304) that can slide with the side of the device mounting base (42). The clamping member (4304) is slidably disposed in the groove (4301). A tensioning assembly is provided between the clamping member (4304) and the side wall of the groove (4301) to keep the clamping member (4304) in contact with the device mounting base (42). The tension assembly includes a perforation (4303) provided on the side wall of the groove (4301), a telescopic rod (4306) that movably passes through the perforation (4303) is provided on the side of the clamping member (4304), a compression spring (4308) located between the clamping member (4304) and the side wall of the groove (4301) is fitted on the outside of the telescopic rod (4306), and a limit plate (4307) is provided at the outer end of the telescopic rod (4306). The front end of the clamping member (4304) is provided with a guide slope (4309).

5. The rapid alignment device for steel arch ribs according to claim 1, characterized in that: The telescopic end of the pull-opening telescopic cylinder (433) is also provided with a lifting hook mechanism (436) for hooking the pull-opening device (43) to the other end of the connecting flange (302) during installation; The lifting hook mechanism (436) includes a sleeve (4360) fixed on the telescopic end of the telescopic cylinder (433), and opening and closing grippers (437) arranged sequentially on the other side of the sleeve (4360). A hook plate (4364) is telescopically provided in the sleeve (4360). A support frame (4361) is fixed on the top of the sleeve (4360). A top plate (4362) is fixed on the top of the support frame (4361). The lifting telescopic cylinder (4363) is installed on the top plate (4362). A sliding plate (4365) that slides with the support frame (4361) is provided on the top of the hook plate (4364). The telescopic end of the lifting telescopic cylinder (4363) moves through the top plate (4362) and connects with the sliding plate (4365). The bottom end of the hook plate (4364) is provided with an anti-detachment plate (4366) that is larger than the bottom opening of the sleeve (4360). The upper and lower parts of the hook plate (4364) are provided with pin holes (4368) for fixing the two states of raising and lowering. The sleeve (4360) is provided with a socket (4367) that can correspond to any pin hole (4368). A pin (4369) is inserted between the socket (4367) and any pin hole (4368).

6. A construction method for a rapid alignment device for steel arch ribs according to any one of claims 1-5, characterized in that: The method includes: S1. Install the pulling and positioning mechanism (4) and the positioning matching mechanism (5) onto the erected steel arch rib (1) and the steel arch rib to be erected (2), respectively; S2. The steel arch rib (2) to be erected is hoisted to the installation position by a cable crane; S3. When the steel arch rib (2) to be erected is hoisted to the initial positioning position, the extension cylinder (433) of the positioning mechanism (4) is extended, and the opening and closing gripper (437) is in the open state. According to the position of the pull ring (521) of the positioning matching mechanism (5), the position of the opening and closing gripper (437) is adjusted by adjusting the extension and retraction of the extension cylinder (434). S4. After the opening and closing gripper (437) is in place, control it to close and capture the pull ring (521), pull the telescopic cylinder (433) back, and under the action of the cable crane, pull the steel arch rib (2) to be erected towards the steel arch rib (1) that has been erected. During this process, control the telescopic cylinder (434) to reset, and under the action of the guide socket (41) and the guide socket (51), pull the steel arch rib (2) to be erected to the precise installation position and provide the initial pre-tightening force required for bolt connection, and the bolt connection can be completed.

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