CN221796726U - Caisson lifting appliance capable of automatically correcting and positioning - Google Patents

Abstract

The utility model relates to the technical field of gravity wharf construction, in particular to a caisson lifting appliance capable of automatically correcting and positioning, which comprises a lifting seat for connecting a lifting hook of a lifting machine, a rope for connecting the lifting seat with a lifting plate and hooks arranged on the lifting plate through a positioning mechanism, wherein the hooks are at least two and deviate from each other, the positioning mechanism comprises a directional rod hinged with the hooks, a second toothed rod fixedly connected with the directional rod, and a transmission assembly for driving the second toothed rod to reciprocate on the lifting plate, and the transmission assembly is arranged on the lifting plate; the rope is fixedly connected to the middle part of the hook, and the lifting plate is provided with a locking component for connecting the middle part of the rope with the lifting plate. The lifting hook on the lifting appliance is automatically hooked on the caisson, so that the overhead work and diving work of a constructor are avoided, and the safety coefficient is improved.

Description

A caisson lifting device capable of automatically correcting positioning

Technical Field

The utility model relates to the technical field of gravity dock construction, in particular to a caisson hoisting device capable of automatically correcting positioning.

Background Art

Gravity dock is one of the main structural forms of dock water conservancy engineering buildings. It can rely on its own weight and the weight of the filler to maintain the anti-tilting and anti-slip stability of the structure. It has good integrity, reliable structure, high durability, small maintenance, and strong adaptability to large loads. The gravity dock that uses reinforced concrete caisson as the main structure is called caisson gravity dock. The reinforced concrete caisson structure is composed of components such as outer wall, inner wall, seat bottom and wall toe. The caisson gravity dock generally adopts an integral prefabrication method. The advantages of the prefabricated caisson dock are simple structure, can be installed out of the water at one time, and the construction speed is fast. However, because the reinforced concrete caisson structure itself has large size and weight, and a long prefabrication period, the construction requirements for the caisson prefabrication site are high, and the long-term storage of the caisson greatly occupies the construction site, affecting the construction organization and project progress. Therefore, in actual engineering, the prefabricated caisson temporary seat bottom will be stored on the natural seabed or base bed in the construction sea area to release the capacity of the caisson prefabrication site and improve production efficiency.

During the construction of a gravity dock, it is necessary to float the caisson stored on the natural seabed or foundation bed to the construction sea area. Generally, it is necessary to raise and lower the caisson first. In the process of lifting and installing the caisson, it is usually necessary to preset a lifting point on the caisson, and then embed a positioning pin at the position of the preset point of the caisson to assist in lifting the caisson. When raising and lowering the caisson, since the position of the through pin is generally about 2m lower than the top of the caisson, generally below the low tide level, divers are required to perform underwater operations to connect the sling to the positioning pin. This type of diving operation has great safety hazards and low efficiency. Therefore, it is necessary to develop a lifting tool that can automatically hook and unhook to reduce the risks during construction operations.

Chinese patent 201820659011.4 discloses "A new type of caisson hoist", publication number CN 208394607U, the device comprises a main hook, a rigging hook, a wire rope, an ear plate, a lifting hole, a support frame, a caisson, a pin shaft, a caisson hook, a hook wing plate, a pull rod, a limit frame and a main hook wire rope; lifting holes are provided on both side surfaces of the caisson, ear plates are fixedly installed on the lower surfaces of both ends of the support frame by welding, the caisson hook is installed on the front surface of the ear plate through a pin shaft, the lower end joint of the hook wing plate is installed on the rear surface of the ear plate through a pin shaft, the upper end joint of the hook wing plate is connected to the pull rod through a pin shaft, the limit frame is fixedly installed on the upper surface of the support frame, the pull rod is fixedly installed on the two side surfaces of the limit frame, the main hook wire rope passes through the upper main hook, and the two ends are fixedly connected to the left and right ends of the surface of the support frame through pin shafts, the middle part of the limit frame is wrapped with a wire rope, and the rigging hook is connected to the top of the wire rope. However, this device has some defects: this device can only lift when the caisson hook accurately corresponds to the lifting hole on the outer wall of the caisson, but the caisson hook of this device cannot automatically align with the lifting hole, and manual operation is required to assist in alignment, which reduces efficiency.

Utility Model Content

In order to solve the problems of the above-mentioned prior art, the utility model provides a caisson lifting device which can automatically correct and position, and can realize the connection and separation of the lifting device and the caisson without manual operation on the top of the caisson, thus avoiding the construction personnel from performing high-altitude operations and diving operations, improving the safety factor, and also improving the construction efficiency.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a caisson hoist that can automatically correct its positioning, including a hanging seat for connecting a crane hook, a rope for connecting the hanging seat and a lifting plate, and a hook arranged on the lifting plate through a positioning mechanism, wherein at least two hooks are arranged and are away from each other, the positioning mechanism includes a directional rod hinged to the hook, a second gear rod fixedly connected to the directional rod, and a transmission assembly that drives the second gear rod to reciprocate on the lifting plate, wherein the transmission assembly is arranged on the lifting plate; the rope is fixedly connected to the middle part of the hook, and a locking assembly for connecting the middle part of the rope to the lifting plate is arranged on the lifting plate.

With the above structural design, when the locking device locks the rope, the hook will not rotate after the crane lifts the lifting plate, thereby realizing moving the lifting plate to the caisson. When the locking device releases the rope and lifts the hanging seat, the rope can drive the hook to rotate, realizing the function of automatic alignment of the lifting plate with the caisson, and the hook can automatically hook the caisson, thereby avoiding high-altitude and diving operations of the operator and reducing the risk factor.

Preferably, the transmission assembly includes a tension spring fixedly connected to the hanging seat, a lower fixed seat fixedly connected to the lower end of the tension spring, a first gear rod arranged on the lower fixed seat, a driving gear constantly meshing with the first gear rod, and a driven gear coaxially fixed with the driving gear, the second gear rod constantly meshing with the driven gear, the driving gear and the driven gear are both rotatably connected to the mounting shell, the mounting shell is fixedly connected to the lifting plate, an L-shaped support rod is fixedly connected to the lower fixed seat, the upper end of the first gear rod is fixedly connected to the support rod, and the first gear rod passes through the lifting plate from top to bottom.

With the above structural design and a transmission assembly, when the first tooth bar moves upward, the directional rod moves toward the center of the cross-shaped partition wall of the caisson, and when the first tooth bar moves downward, the directional rod is reset, thereby realizing the positioning and resetting functions of the directional rod.

Preferably, a sliding groove is provided on the first gear rod, a sliding block matching with the sliding groove is slidably connected in the sliding groove, the sliding block is fixedly connected to a bracket, and the bracket is fixedly connected to a lifting plate.

The above structural design is used to stabilize the first gear rod and ensure that the first gear rod can move up and down smoothly.

Preferably, the locking assembly includes a right clamping plate fixedly connected to the lifting plate, a left clamping plate slidably connected to the lifting plate, and an electric push rod driving the left clamping plate to move left and right on the lifting plate, a plurality of racks are fixedly connected to the left clamping plate, a groove matching the racks is formed on the right clamping plate, and the electric push rod is fixedly connected to the lifting plate.

With the above structural design, when the electric push rod pushes the left clamping plate to move to the right, the rack on the left clamping plate is embedded in the groove with the rope to lock the rope; when the push rod moves to the left, the left clamping plate releases the rope.

Preferably, the hook comprises a straight rod hinged on the directional rod, a baffle fixedly connected to the lower end of the straight rod, and a clamping rod symmetrically fixedly connected to the baffle, and an acute angle is formed between the clamping rod and the baffle.

By adopting the above structural design, the hook can be accurately connected to the positioning pin on the inner wall of the caisson.

Compared with the prior art, the beneficial effects of the utility model are:

1) A positioning function is added. The operator does not need to accurately match the hook with the positioning pin. The operator only needs to match the hook to different compartments in the caisson when operating the crane, and then lower it. The device can automatically align the hook with the positioning pin.

2) When floating the caisson, there is no need for manual operation on the top of the caisson. The hook on the hoist can be automatically hooked on the caisson to achieve the connection and separation of the hoist and the caisson, avoiding the construction workers from performing high-altitude and diving operations, improving the safety factor, and also improving the construction efficiency, avoiding the construction workers from performing high-altitude and diving operations, improving the safety factor.

3) The positioning pins on the caisson are fixedly connected to the inner wall of the caisson, and the workers do not need to remove the positioning pins, thus reducing the work intensity.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic diagram of the structure of the utility model from the front;

FIG3 is a schematic cross-sectional view of the structure of the transmission assembly of the utility model;

FIG4 is a schematic structural diagram of a first gear rod of the present invention;

Figure 5 is a schematic diagram of the structure of the locking device of the utility model;

DETAILED DESCRIPTION

In order to enable the caisson 7 to be hung by the sling hook, a positioning pin 91 is fixedly connected to the inner wall of the caisson 9; the positioning pin fixedly connected to the inner wall of the caisson 9 will not hinder the alignment and fitting of adjacent caissons when the caisson 9 is installed, so there is no need to remove it; a cross-shaped partition wall is arranged inside the caisson 7 to support the caisson wall, thereby increasing the stability of the caisson 7.

Please refer to Figures 1, 2, 3, 4 and 5. The utility model provides a technical solution: a caisson lifting device that can automatically correct its positioning, including a hanging seat 8 for connecting a crane hook, a rope 11 for connecting the hanging seat 8 and a lifting plate 2, and a hook 1 arranged on the lifting plate 2 through a positioning mechanism, wherein at least two hooks 1 are arranged and are away from each other; according to Figure 1, in this embodiment, the lifting plate 2 is a square structure made according to the opening shape and size of the caisson 9.

Please refer to Figures 1, 2 and 3. The positioning mechanism includes a directional rod 4 hinged to the hook 1, a second gear rod 54 fixedly connected to the directional rod 4, and a transmission assembly that drives the second gear rod 54 to reciprocate on the lifting plate 2, and the transmission assembly is arranged on the lifting plate 2; the rope 11 is fixedly connected to the middle part of the hook 1, and the lifting plate 2 is provided with a locking assembly for connecting the middle part of the rope 11 to the lifting plate 2.

According to FIG. 1 , in this embodiment, the hook 1 moves along the diagonal direction of the lifting plate 2 , and when the directional rod 4 clamps the center of the cross-shaped partition wall of the caisson, the position of the hook 1 corresponds to the position of the positioning pin 91 .

Please refer to Figure 1. The hook 1 includes a straight rod 12 hinged on the directional rod 4, a baffle 13 fixedly connected to the lower end of the straight rod 12, and a clamping rod 14 symmetrically fixedly connected to the baffle 13. An acute angle is formed between the clamping rod 14 and the baffle 13. When the hook 1 rotates, the outer wall of the clamping rod 14 can fit the inner wall of the caisson 9. The distance between the clamping rods 14 is greater than the diameter of the positioning pin 91 so that it can clamp the positioning pin 91.

Please refer to Figures 1, 2 and 3. The transmission assembly includes a tension spring 33 fixedly connected to the suspension seat 8, a lower fixed seat 32 fixedly connected to the lower end of the tension spring 33, a first gear rod 51 arranged on the lower fixed seat 32, a driving gear 52 constantly meshed with the first gear rod 51, and a driven gear 53 coaxially fixed with the driving gear 52. The second gear rod 54 is constantly meshed with the driven gear 53. The driving gear 52 and the driven gear 53 are both rotatably connected to the mounting shell 55. The driving gear 52 and the driven gear 53 are both fastened and sleeved on the same rotating shaft, and the rotating shaft is rotatably connected to the mounting shell 55. The mounting shell 55 is fixedly connected to the lifting plate 2. An L-shaped support rod 34 is fixedly connected to the lower fixed seat 32. The upper end of the first gear rod 51 is fixedly connected to the support rod 34. The first gear rod 51 passes through the lifting plate 2 from top to bottom, and a diagonal brace is arranged between the opposite side walls of the support rod 34. The first gear rod 51 moves up and down, driving the driving gear 52 to rotate. The driving gear 52 rotates to drive the driven gear 53 to rotate, thereby driving the second gear rod 54 to reciprocate.

Please refer to Figures 1 and 2. In this embodiment, the tension spring 33 is fixedly connected to the upper fixed seat 31. The upper fixed seat 31 is connected to the hanging seat 8 by a connecting rope 81. The center of the lifting plate 2 is fixedly connected to the guide rod 7. The lower fixed seat 32 and the tension spring 33 are both mounted on the guide rod 7, so that the tension spring 33 can move vertically up and down to prevent the tension spring 33 from being affected by deformation.

Please refer to Figure 5. A slide groove 511 is provided on the first gear rod 51. A sliding block 512 matching with the slide groove 511 is slidably connected in the slide groove 511. The sliding block 512 is fixedly connected to a bracket 513. The bracket 513 is fixedly connected to the lifting plate 2.

Please refer to Figure 4, the locking assembly includes a right clamping plate 61 fixedly connected to the lifting plate 2, a left clamping plate 62 slidably connected to the lifting plate 2, and an electric push rod 63 that drives the left clamping plate 62 to move left and right on the lifting plate 2, a plurality of racks are fixedly connected to the left clamping plate 62, a groove matching the racks is provided on the right clamping plate 61, and the electric push rod 63 is fixedly connected to the lifting plate 2.

As a further improvement of the utility model, please refer to FIG. 4 . In this embodiment, a lower positioning plate 64 is provided below the right clamping plate 61 , and an upper positioning plate 65 is provided above the right clamping plate 61 . The rope 11 passes through the lower positioning plate 64 and the upper positioning plate 65 .

Working principle: before the device is moved and placed on the caisson, the locking assembly is in a locked state, so that the rope 11 above the locking assembly is in a taut state, and the rope 11 below the locking assembly is in a loose state with a margin. At this time, when the device is lifted, the positioning mechanism will not be activated; after the device is placed on the caisson 9, the locking device releases the rope 11, and the staff continues to start the crane. The main hook of the crane drives the upper fixed seat 31 and the lower fixed seat 32 to move upward, and then drives the first gear rod 51 to move upward, and through the gear transmission, drives the second gear rod 54 to move, and then And drive the directional rod 4 to move toward the angle of the cross-shaped partition wall of the caisson; at the same time, the rope 11 changes from a relaxed state to a taut state. Due to the presence of the tension spring 33, the main hook of the crane can continue to rise, and the rope 11 pulls the hook 1 to rotate until the bottom end of the hook 1 conflicts with the inner wall of the caisson. The main hook of the crane continues to rise, and the hook 1 cannot continue to rotate. The lifting plate 2 moves up, and the bottom end of the hook 1 rises along the inner wall of the caisson until the hook 1 contacts the positioning pin 91 on the inner wall of the caisson 9 and clamps it, thereby completing the automatic hook connection between the caisson 9 and the sling.

After the crane lifts the caisson 9 and floats it to the target position, the main hook of the crane descends, the tension spring 33 recovers, the lower fixed seat 32 and the upper fixed seat 31 move downward, the rope 11 changes from a taut state to a relaxed state, the hook 1 disengages from the positioning pin 91, and rotates under the action of gravity, the transmission device drives the directional rod 4 to reset, the caisson 9 is unhooked and separated from the sling, and the lifting is completed.

The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

The present invention is described above with reference to the preferred embodiments, but the protection scope of the present invention is not limited thereto, and all technical solutions falling within the scope of the claims are within the protection scope of the present invention. Various improvements may be made to the present invention and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims (5)

1. A caisson lifting device capable of automatically correcting its positioning, comprising a hanging seat (8) for connecting a crane hook, a rope (11) for connecting the hanging seat (8) and a lifting plate (2), and a hook (1) arranged on the lifting plate (2) through a positioning mechanism, characterized in that: at least two hooks (1) are arranged and are oriented away from each other, the positioning mechanism comprises a directional rod (4) hinged to the hook (1), a second tooth rod (54) fixedly connected to the directional rod (4), and a transmission assembly for driving the second tooth rod (54) to reciprocate on the lifting plate (2), and the transmission assembly is arranged on the lifting plate (2); the rope (11) is fixedly connected to the middle part of the hook (1), and a locking assembly for connecting the middle part of the rope (11) to the lifting plate (2) is arranged on the lifting plate (2). 2. A caisson hanger capable of automatically correcting positioning according to claim 1, characterized in that: the transmission assembly comprises a tension spring (33) fixedly connected to a hanger (8), a lower fixed seat (32) fixedly connected to the lower end of the tension spring (33), a first toothed rod (51) arranged on the lower fixed seat (32), a driving gear (52) constantly meshed with the first toothed rod (51), and a driven gear (53) coaxially fixed with the driving gear (52), the second toothed rod (54) constantly meshed with the driven gear (53), the driving gear (52) and the driven gear (53) are both rotatably connected to a mounting shell (55), the mounting shell (55) is fixedly connected to a lifting plate (2), an L-shaped support rod (34) is fixedly connected to the lower fixed seat (32), the upper end of the first toothed rod (51) is fixedly connected to the support rod (34), and the first toothed rod (51) passes through the lifting plate (2) from top to bottom. 3. According to claim 2, a caisson lifting device capable of automatically correcting positioning is characterized in that: a slide groove (511) is opened on the first gear rod (51), a sliding block (512) matching with it is slidably connected in the slide groove (511), the sliding block (512) is fixedly connected to a bracket (513), and the bracket (513) is fixedly connected to the lifting plate (2). 4. A caisson lifting device capable of automatically correcting positioning according to claim 1, characterized in that: the locking assembly comprises a right clamping plate (61) fixedly connected to the lifting plate (2), a left clamping plate (62) slidably connected to the lifting plate (2), and an electric push rod (63) driving the left clamping plate (62) to move left and right on the lifting plate (2), a plurality of racks are fixedly connected to the left clamping plate (62), a groove matching the racks is provided on the right clamping plate (61), and the electric push rod (63) is fixedly connected to the lifting plate (2). 5. A caisson hanger capable of automatically correcting positioning according to claim 1, characterized in that the hook (1) comprises a straight rod (12) hinged on a directional rod (4), a baffle (13) fixedly connected to the lower end of the straight rod (12), and a clamping rod (14) symmetrically fixedly connected to the baffle (13), wherein an acute angle is formed between the clamping rod (14) and the baffle (13).