Steel box girder manhole auxiliary mounting equipment and mounting method

Abstract

The invention relates to the technical field of steel box girder installation, and discloses steel box girder manhole auxiliary installation equipment and an installation method.The steel box girder manhole auxiliary installation equipment comprises a bottom ring and hanging rings fixedly arranged at the top of the bottom ring, the upper ends of the interiors of the multiple hanging rings are fixedly sleeved with inhaul cables, and lifting hooks are fixedly arranged at the tops of the multiple inhaul cables; two symmetrically-arranged rotating rods are rotatably arranged on the side portion of the bottom ring in a penetrating mode, a rotating ring is jointly and fixedly arranged at the ends, close to each other, of the two rotating rods, a transverse plate is fixedly arranged on the inner wall of the rotating ring, a plurality of clamping blocks symmetrically arranged in a surrounding mode are arranged at the lower end of the transverse plate, supporting plates are slidably arranged in the clamping blocks in a penetrating mode, and the supporting plates are fixedly connected with the inner wall of the rotating ring. According to the auxiliary mounting equipment for the steel box girder manhole and the mounting method, the bottom ring, the rotating rod, the rotating ring, the transverse plate, the supporting plate, the clamping block, the connecting rod, the drag hook and the synchronous clamping mechanism are provided, use of the drag hook and the clamping block can be rapidly switched according to the specification of the manhole, the overall use multifunctionality of the auxiliary mounting equipment is improved, and manual mounting convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel box girder installation, and in particular to a steel box girder manhole auxiliary installation device and an installation method. Background Art

[0002] The manhole of a steel box girder refers to a hole opened on the steel box girder for personnel to enter and exit. Generally, the location of the manhole should be selected at a position of the steel box girder that is convenient for personnel to enter and exit, such as the end or side of the box girder. At the same time, the edge of the manhole should be reinforced after the manhole is installed to prevent deformation or damage when personnel enter and exit.

[0003] After searching, the patent document with announcement number CN219364292U discloses a temporary blocking structure for a manhole of a steel box girder, in which pressing the U-shaped block of the manhole can drive the sliding rod to slide in the sliding groove, and the spring is squeezed by the limit block to make the handle stuck in the U-shaped block, and the U-shaped block is released. The limit block moves upward under the action of the spring, and the U-shaped block is driven by the sliding rod to contact the handle, so that the upper cover can be fixed, which is convenient for pushing and safer to use. The U-shaped block is pressed to separate the U-shaped block from the handle, and the telescopic rod is rotated to make the telescopic rod stuck in the groove, and the upper cover is closed and locked by the lock body.

[0004] However, it can be inferred from the above documents and the prior art that the overall structure of the manhole is installed by hoisting when installed with the steel box girder, and the manhole is slowly inserted into the side of the steel box girder during the hoisting process to complete the connection, and the commonly used hoisting method is to use a hook for connection, but since the setting structure of the manhole is not single and fixed, and some manhole surfaces are not provided with hanging ears, it is necessary to contact the remaining clamping components to clamp the manhole and then hoist it during the hoisting process, resulting in certain limitations in the overall use of the installation device and poor functionality. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a steel box girder manhole auxiliary installation device and installation method, which have the advantages of being able to have a variety of clamping and lifting structures, and can be quickly selected according to the different manhole structures to assist in the installation of the manhole. It solves the problem that the internal lifting structure of the existing lifting device is relatively single and cannot quickly assist in the installation of a variety of manholes.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an auxiliary installation device and installation method for a manhole of a steel box girder, comprising a bottom ring and a lifting ring fixedly arranged on the top of the bottom ring, a plurality of the lifting rings having a fixed sleeve on their inner upper ends, a plurality of the lifting rings having a fixed sleeve on their inner upper ends, a plurality of the cables having a fixed hook on their tops, two symmetrically arranged rotating rods rotatably penetrated through the side of the bottom ring, a rotating ring is fixedly arranged at one end of the two rotating rods close to each other, a horizontal plate is fixedly arranged on the inner wall of the rotating ring, a plurality of clamping blocks symmetrically arranged around the lower end of the horizontal plate are provided, a support plate is slidably penetrated through the inside of the clamping block, the support plate is fixedly connected to the inner wall of the rotating ring, a synchronous clamping mechanism for simultaneously driving the plurality of clamping blocks to clamp horizontally is provided between the plurality of rotating rings;

[0009] A connecting rod is fixedly provided on the top of each of the plurality of the card blocks, and the end of the connecting rod passes through the horizontal plate and is fixedly provided with a draw hook;

[0010] A rotating plate is fixedly provided at the end of the rotating rod, and a switching hoisting mechanism for limiting the position of the rotating ring is provided between the rotating plate and the outer wall of the bottom ring.

[0011] Preferably, the synchronous clamping mechanism comprises a driving shaft, the driving shaft is rotatably inserted into the interior of the horizontal plate, a transmission plate is fixedly sleeved on the lower end of the driving shaft, a connecting plate is fixedly installed on the upper end of the clamping block, a rotation groove is provided on the side close to the connecting plate and the transmission plate, a first vertical rod and a second vertical rod are fixedly inserted into the two rotation grooves respectively, and a pull plate is rotatably sleeved on the rod walls of the first vertical rod and the second vertical rod;

[0012] The upper end of the driving shaft is provided with a driving self-locking mechanism for driving the driving shaft to rotate.

[0013] Preferably, the drive self-locking mechanism includes a worm wheel and a worm, two symmetrically arranged fixing plates are fixedly provided on the top of the cross plate, the worm is rotatably arranged between the two fixing plates, the worm wheel is fixedly sleeved with the drive shaft and is arranged in cooperation with the worm.

[0014] Preferably, the end of the worm passes through a fixed plate and is fixedly provided with a crank.

[0015] Preferably, the switching lifting mechanism includes a positioning rod, which is slidably inserted into the interior of the rotating plate. The outer wall of the bottom ring and two symmetrically arranged positioning grooves are provided on both sides of the rotating rod. The end of the positioning rod is inserted into the positioning groove, and a positioning spring is provided on the rod wall of the positioning rod. The two ends of the positioning spring are respectively fixedly connected to the positioning rod and the rotating plate.

[0016] Preferably, the positioning rod is an L-shaped rod.

[0017] Preferably, a guide hole is opened inside the support plate, a guide plate is fixedly penetrated through the inner upper end of the block, the guide plate is slidably arranged in the guide hole, and a guide spring is fixedly arranged between the guide plate and the inner wall of the guide hole.

[0018] Preferably, a plurality of strip-shaped holes for slidingly cooperating with the connecting rod are provided inside the transverse plate.

[0019] Preferably, the pull plate is rotationally engaged with the first vertical rod and the second vertical rod via bearings.

[0020] A method for auxiliary installation of a manhole of a steel box girder, the specific steps are as follows:

[0021] S1: Connect the hook to the external lifting equipment so that the bottom ring and the swivel are in the same vertical line, and then determine the shape of the manhole to be lifted;

[0022] S2: When the manhole is not provided with a hanging ear, the bottom ring can be moved to the upper end of the outer side of the manhole, and the multiple clamping blocks are located on the outer side of the manhole. Then, the multiple clamping blocks are moved laterally under the support of the support plate and clamped on the lower end of the cover plate of the manhole, so as to quickly clamp the manhole, and the manhole can be auxiliary clamped and hoisted with the help of external hoisting equipment;

[0023] S3: When a hanging ear is provided inside the manhole, the swivel can be rotated in the bottom ring under the support of the rotating rod, so that the clamping block is rotated upward. At this time, multiple hooks fall down and are located outside the manhole. Then the hooks can be connected to the hanging ears inside the manhole, and the manhole can be stably hoisted when the hoisting equipment is started.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the present invention provides a steel box girder manhole auxiliary installation device and installation method, which has the following beneficial effects:

[0026] 1. The steel box girder manhole auxiliary installation equipment and installation method can quickly switch the use of the hook and the block according to the specifications of the manhole through the bottom ring, rotating rod, rotating ring, cross plate, supporting plate, clamping block, connecting rod, hook and synchronous clamping mechanism, thereby improving the overall versatility of the auxiliary installation device and the convenience of manual installation.

[0027] 2. The steel box girder manhole auxiliary installation equipment and installation method, through the provided bottom ring, rotating rod, swivel and switching lifting mechanism, can fix the position of the swivel after the swivel is rotated by plugging the positioning rod and the positioning grooves at different positions, thereby ensuring the stability of the hook or the block during the manhole lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a structural schematic diagram of a steel box girder manhole auxiliary installation device and installation method proposed by the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the internal structure of the transfer ring;

[0030] Figure 3 for Figure 1 A magnified view of the structure of the local A part;

[0031] Figure 4 for Figure 2 The structure enlarged diagram of the local B part;

[0032] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the midsole ring and the swivel.

[0033] In the figure: 1 bottom ring, 2 lifting ring, 3 cable, 4 hook, 5 rotating rod, 6 rotating ring, 7 horizontal plate, 8 block, 9 supporting plate, 10 connecting rod, 11 hook, 12 rotating plate, 13 driving shaft, 14 transmission plate, 15 connecting plate, 16 first vertical rod, 17 second vertical rod, 18 pulling plate, 19 worm, 20 fixing plate, 21 crank, 22 positioning rod, 23 positioning groove, 24 positioning spring, 25 guide plate, 26 guide spring, 27 worm gear. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1-5 , a steel box girder manhole auxiliary installation equipment, comprising a bottom ring 1 and a lifting ring 2 fixedly arranged on the top of the bottom ring 1, a plurality of lifting rings 2 are fixedly sleeved with a cable 3 at the upper ends of the inner parts, a plurality of cable hooks 4 are fixedly arranged on the tops of the plurality of cables 3, two symmetrically arranged rotating rods 5 are rotatably penetrated on the side of the bottom ring 1, a swivel 6 is fixedly arranged at one end of the two swivel rods 5, a cross plate 7 is fixedly arranged on the inner wall of the swivel 6, a plurality of clamping blocks 8 symmetrically arranged are arranged at the lower end of the cross plate 7, a support plate 9 is slidably penetrated inside the clamping block 8, the support plate 9 is fixedly connected to the inner wall of the swivel 6, a synchronous clamping mechanism for simultaneously driving the plurality of clamping blocks 8 to clamp horizontally is arranged between the plurality of swivels 6, a connecting rod 10 is fixedly arranged on the tops of the plurality of clamping blocks 8, the ends of the connecting rod 10 pass through the cross plate 7 and are fixedly provided with a hook 11, and a plurality of strip holes for cooperating with the connecting rod 10 to slide are opened inside the cross plate 7.

[0037] The synchronous clamping mechanism includes a driving shaft 13, which is rotatably inserted into the interior of the horizontal plate 7, a transmission plate 14 is fixedly sleeved on the lower end of the driving shaft 13, a connecting plate 15 is fixedly installed on the upper end of the clamping block 8, a rotating groove is provided on the side close to the connecting plate 15 and the transmission plate 14, a first vertical rod 16 and a second vertical rod 17 are fixedly inserted into the two rotating grooves respectively, a pull plate 18 is rotatably sleeved on the rod walls of the first vertical rod 16 and the second vertical rod 17, the pull plate 18 and the first vertical rod 16 and the second vertical rod 17 are rotatably matched through bearings, a guide hole is provided in the interior of the support plate 9, a guide plate 25 is fixedly inserted into the upper end of the interior of the clamping block 8, the guide plate 25 is slidably arranged in the guide hole, and a guide spring 26 is fixedly provided between the guide plate 25 and the inner wall of the guide hole;

[0038] The upper end of the driving shaft 13 is provided with a driving self-locking mechanism for driving the driving shaft 13 to rotate, and the driving self-locking mechanism includes a worm wheel 27 and a worm 19. Two symmetrically arranged fixed plates 20 are fixedly provided on the top of the cross plate 7. The worm 19 is rotatably arranged between the two fixed plates 20. The worm wheel 27 is fixedly sleeved with the driving shaft 13 and is matched with the worm 19. The end of the worm 19 passes through the fixed plate 20 and is fixedly provided with a crank 21.

[0039] Before the auxiliary installation of the manhole is required, the hook 4 can be connected to an external lifting device such as a crane, so that the device as a whole can be moved longitudinally, and then the specifications of the manhole to be lifted are determined. When there is no lifting lug inside the manhole, the bottom ring 1 below the lifting device can be made so that the multiple blocks 8 inside the bottom ring 1 can be set on the outside of the manhole, and then the crank 21 is pushed, so that the crank 21 drives the worm 19 to rotate, and the self-locking engagement of the worm 19 and the worm wheel 27 can stably rotate the drive shaft 13, so that the drive The shaft 13 drives the transmission plate 14 to rotate. At this time, the transmission plate 14 can pull the multiple pull plates 18. Since the pull plates 18 are in rotational cooperation with the first vertical rod 16 and the second vertical rod 17, the connecting plate 15 can drive the clamping block 8 to move laterally under the support of the support plate 9, and stretch the guide spring 26, so that the lower ends of the multiple clamping blocks 8 can be clamped and set under the cover of the manhole, thereby completing the rapid clamping of the manhole. Then, the manhole can be lifted to the top of the steel box beam of the manhole again, and longitudinally cooperate with the installation position to finally complete the installation;

[0040] If there is a hanging ear inside the manhole for hoisting, the swivel 5 can be driven to rotate under the support of the rotating rod 5. At this time, the positions of the clamping block 8 and the hook 11 are swapped, so that the hook 11 falls and is located outside the manhole. The hoisting of the manhole can be completed by connecting the hook 11 with the hanging ear.

[0041] Example 2

[0042] Embodiment 2 is based on Embodiment 1 in order to enable the positions of the hook 11 and the block 8 to be switched and used. Figure 1 and Figure 3 As shown, a rotating plate 12 is fixedly provided at the end of the rotating rod 5, and a switching lifting mechanism for limiting the position of the rotating ring 6 is provided between the rotating plate 12 and the outer wall of the bottom ring 1, and the switching lifting mechanism includes a positioning rod 22, and the positioning rod 22 is an L-shaped rod, and the positioning rod 22 is slidably penetrated into the interior of the rotating plate 12 and the outer wall of the bottom ring 1, and two symmetrically arranged positioning grooves 23 are provided on both sides of the rotating rod 5, and the end of the positioning rod 22 is inserted into the positioning groove 23, and the rod wall of the positioning rod 22 is provided with a positioning spring 24, and the two ends of the positioning spring 24 are respectively fixedly connected to the positioning rod 22 and the rotating plate 12.

[0043] When the shape of the manhole is determined and the use of the hook 11 and the block 8 needs to be switched, the positioning rod 22 is first pulled. Since the positioning rod 22 is an L-shaped rod, the positioning rod 22 can be easily pulled and pulled out from the positioning groove 23 on one side, and the positioning spring 24 is stretched. Then, the rotating ring 6 is driven to rotate by the rotating rod 5, so that the setting position of the hook 11 and the block 8 is switched, and the rotating ring 6 continues to rotate to a horizontal position. Then, the positioning rod 22 is released, and the positioning spring 24 is used to restore the elastic force, so that the positioning rod 22 can quickly return and be inserted into the positioning groove 23 on the other side, thereby completing the position fixation of the rotating plate 12 and the rotating ring 6.

[0044] Example 3

[0045] Embodiment 3 proposes a steel box girder manhole auxiliary installation method based on Embodiment 1-2, and the specific steps are as follows:

[0046] S1: Connect the hook 4 to the external lifting equipment so that the bottom ring 1 and the swivel 6 are located in the same vertical line, and then determine the shape of the manhole to be lifted;

[0047] S2: When the manhole is not provided with a hanging ear, the bottom ring 1 can be moved to the upper end of the outer side of the manhole, and the multiple clamping blocks 8 are located on the outer side of the manhole. Then, the multiple clamping blocks 8 are moved laterally under the support of the support plate 9 and clamped on the lower end of the cover plate of the manhole to quickly clamp the manhole, and the manhole can be auxiliary clamped and hoisted with the help of external hoisting equipment;

[0048] S3: When a hanging ear is provided inside the manhole, the swivel 6 can be rotated in the bottom ring 1 under the support of the rotating rod 5, so that the clamping block 8 is rotated upward. At this time, multiple hooks 11 fall down and are located outside the manhole. Then the hooks 11 can be connected to the hanging ears inside the manhole, and the manhole can be stably lifted when the lifting equipment is started.

[0049] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel box girder manhole auxiliary installation device, comprising a bottom ring (1) and a lifting ring (2) fixedly arranged on the top of the bottom ring (1), characterized in that: A cable (3) is fixedly sleeved on the inner upper end of each of the plurality of lifting rings (2), a hook (4) is fixedly mounted on the top of each of the plurality of lifting cables (3), two symmetrically arranged rotating rods (5) are rotatably penetrated on the side of the bottom ring (1), a rotating ring (6) is fixedly mounted on one end of the two rotating rods (5), a horizontal plate (7) is fixedly mounted on the inner wall of the rotating ring (6), a plurality of clamping blocks (8) symmetrically arranged in a surrounding manner are mounted on the lower end of the horizontal plate (7), a support plate (9) is slidably penetrated inside the clamping block (8), the support plate (9) is fixedly connected to the inner wall of the rotating ring (6), and a synchronous clamping mechanism for simultaneously driving the plurality of clamping blocks (8) to clamp horizontally is arranged between the plurality of rotating rings (6); A connecting rod (10) is fixedly provided on the top of each of the plurality of clamping blocks (8), and an end of the connecting rod (10) passes through the horizontal plate (7) and is fixedly provided with a draw hook (11); A rotating plate (12) is fixedly provided at the end of the rotating rod (5), and a switching hoisting mechanism for limiting the position of the rotating ring (6) is provided between the rotating plate (12) and the outer wall of the bottom ring (1).

2. The steel box girder manhole auxiliary installation device according to claim 1, characterized in that: The synchronous clamping mechanism comprises a driving shaft (13), the driving shaft (13) is rotatably inserted into the interior of the horizontal plate (7), a transmission plate (14) is fixedly sleeved on the lower end of the driving shaft (13), a connecting plate (15) is fixedly provided on the upper end of the clamping block (8), a rotating groove is provided on the side where the connecting plate (15) and the transmission plate (14) are close to each other, a first vertical rod (16) and a second vertical rod (17) are fixedly inserted into the two rotating grooves respectively, and a pull plate (18) is rotatably sleeved on the rod walls of the first vertical rod (16) and the second vertical rod (17); The upper end of the driving shaft (13) is provided with a driving self-locking mechanism for driving the driving shaft (13) to rotate.

3. The steel box girder manhole auxiliary installation device according to claim 2, characterized in that: The driving self-locking mechanism comprises a worm wheel (27) and a worm (19); two symmetrically arranged fixing plates (20) are fixedly arranged on the top of the transverse plate (7); the worm (19) is rotatably arranged between the two fixing plates (20); the worm wheel (27) is fixedly sleeved with the driving shaft (13) and is arranged in cooperation with the worm (19).

4. The steel box girder manhole auxiliary installation device according to claim 3, characterized in that: The end of the worm (19) passes through the fixing plate (20) and is fixedly provided with a crank (21).

5. The steel box girder manhole auxiliary installation device according to claim 1, characterized in that: The switching hoisting mechanism comprises a positioning rod (22), the positioning rod (22) is slidably arranged inside the rotating plate (12), and the outer wall of the bottom ring (1) and two symmetrically arranged positioning grooves (23) are provided on both sides of the rotating rod (5), the end of the positioning rod (22) is inserted into the positioning groove (23), and the rod wall of the positioning rod (22) is provided with a positioning spring (24), and the two ends of the positioning spring (24) are respectively fixedly connected to the positioning rod (22) and the rotating plate (12).

6. The steel box girder manhole auxiliary installation device according to claim 5, characterized in that: The positioning rod (22) is an L-shaped rod.

7. The steel box girder manhole auxiliary installation device according to claim 1, characterized in that: A guide hole is provided inside the support plate (9), a guide plate (25) is fixedly provided on the upper end of the interior of the clamping block (8), the guide plate (25) is slidably arranged in the guide hole, and a guide spring (26) is fixedly arranged between the guide plate (25) and the inner wall of the guide hole.

8. The steel box girder manhole auxiliary installation device according to claim 1, characterized in that: The interior of the transverse plate (7) is provided with a plurality of strip-shaped holes for slidingly cooperating with the connecting rod (10).

9. The steel box girder manhole auxiliary installation device according to claim 2, characterized in that: The pull plate (18) is rotationally matched with the first vertical rod (16) and the second vertical rod (17) via bearings.

10. A method for auxiliary installation of a manhole of a steel box girder, characterized in that: It comprises a steel box girder manhole auxiliary installation device based on any one of claims 1 to 8, and the specific steps are as follows: S1: Connect the hook (4) to the external lifting equipment so that the bottom ring (1) and the swivel (6) are located on the same vertical line, and then determine the shape of the manhole to be lifted; S2: When no lug is provided inside the manhole, the bottom ring (1) can be moved to the upper end of the outer side of the manhole, and the plurality of clamping blocks (8) can be located outside the manhole. Then, the plurality of clamping blocks (8) are laterally moved under the support of the support plate (9) and clamped to the lower end of the cover plate of the manhole, so that the manhole is quickly clamped, and the manhole can be auxiliary clamped and hoisted with the help of external hoisting equipment; S3: When a hanging ear is provided inside the manhole, the rotating ring (6) can be rotated inside the bottom ring (1) under the support of the rotating rod (5), so that the clamping block (8) is rotated upwards. At this time, a plurality of hooks (11) fall down and are located outside the manhole. Then, the hooks (11) can be connected to the hanging ears inside the manhole, and the manhole can be stably hoisted when the hoisting equipment is started.

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