Prefabricated box girder reinforcement cage lifting appliance for railway

Abstract

The utility model discloses a prefabricated box girder reinforcement cage lifting appliance for a railway, which belongs to the technical field of bridge construction and comprises a bayonet steel upright post, a middle lifting framework and a lifting appliance component, a lifting ring is arranged on the bayonet steel upright post, a plurality of steel wire ropes are arranged on the periphery of the lifting ring, and artificial ladders are further arranged on two sides of the bayonet steel upright post; the middle hoisting framework is arranged below the bayonet steel stand columns, and the artificial escalator is arranged between the middle hoisting framework and the bayonet steel stand columns. The plurality of lifting appliance assemblies are arranged below the middle lifting framework, so that the problems of non-uniform stress, unstable gravity center and left-right shaking of a traditional lifting appliance are effectively solved, and the safety and efficiency of lifting the large-span and large-tonnage prefabricated box girder reinforcement cage prefabricated part are improved; and the hoisting device is suitable for railway engineering reinforcement cage hoisting construction with large manual operation difficulty and high risk.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, in particular to a prefabricated box girder reinforcement cage hoisting device for railways. Background Art

[0002] When railway construction projects cross natural obstacles such as rivers, lakes and seas, higher requirements are placed on the spanning capacity of prefabricated box girders. In order to use suitable large prestressed prefabricated box girders in railway cross-sea bridge projects, the large steel cage prefabricated parts in the prestressed prefabricated box girders are mostly 60 meters long, 10.6 meters wide, 3.65 meters high, and weigh about 140 tons. In the prefabrication production process of large-span and large-tonnage box girders, the large steel cage prefabricated parts need to be tied as a whole, and lifted, transported, and hoisted into the mold as a whole by mechanical hoists.

[0003] In the prior art, the commonly used hoists in beam manufacturing sites are mainly used for prefabricated box beam steel cage prefabricated parts of conventional span and tonnage. The hoists usually use eight steel wire ropes to connect with the hoist hook of the lifting equipment, but this method has significant defects. First, it is difficult to control the center of the steel wire rope. After direct lifting, it is easy to have uneven force, unstable center of gravity, and left and right shaking. This may not only cause deformation of the steel cage prefabricated parts, but also pose a high safety risk in the operation. In addition, this hoisting operation will affect the work timeliness and increase construction costs.

[0004] In order to address the above-mentioned problems and in response to the lifting needs of prefabricated steel cage parts of large-span and large-tonnage prefabricated box girders for railways, the utility model proposes a prefabricated box girder steel cage hoist for railways. This hoist can maintain the balance and stability of the steel cage during the lifting process, avoid the problems of uneven force and unstable center of gravity that are prone to occur with traditional hoists, and improve the safety and efficiency of the lifting operation. Utility Model Content

[0005] The utility model aims to provide a prefabricated box girder reinforcement cage hanger for railways to solve the problems raised in the above-mentioned prior art.

[0006] Provided is a prefabricated box girder reinforcement cage hanger for railways, comprising:

[0007] A bayonet steel column, wherein a lifting ring is arranged on the bayonet steel column, a plurality of steel wire ropes are arranged around the lifting ring, and manual escalators are also arranged on both sides of the bayonet steel column;

[0008] A middle hoisting frame, wherein the middle hoisting frame is arranged below the bayonet steel column, and the artificial escalator is arranged between the middle hoisting frame and the bayonet steel column;

[0009] A plurality of sling assemblies, wherein the plurality of sling assemblies are arranged below the middle sling frame;

[0010] The middle hoisting frame and the bayonet steel column are connected by a manual escalator to form a stable support structure. Several hoisting assemblies are arranged under the middle hoisting frame. These hoisting assemblies are used to hang the reserved hooks of the steel cage prefabricated parts to realize the overall hoisting of the steel cage. By setting the lifting ring and wire rope on the bayonet steel column, the force of the steel cage is ensured to be uniform during the hoisting process. At the same time, by setting the manual escalator on both sides of the bayonet steel column, it is convenient for workers to operate and improve the safety of the operation. The use of multiple hoisting assemblies ensures the balance and stability of the steel cage prefabricated parts during the hoisting process. The hoisting structure of the utility model effectively solves the problems of uneven force, unstable center of gravity and left and right shaking of traditional hoists, improves the safety and efficiency of hoisting large-span and large-tonnage prefabricated box girder steel cage prefabricated parts, and is suitable for railway engineering construction under complex terrain and environmental conditions.

[0011] As a further embodiment of the utility model: a lifting ring is clamped on the bayonet steel column, and fixed iron plates are provided on both sides of the lifting ring. Bolts pass through the limiting holes on the two iron plates and the bolt holes on the upper part of the lifting ring, and the lifting ring clamped on the bayonet steel column is bolted and fixed, so that the lifting ring always remains in a vertical state, ensuring that the steel wire rope can withstand the lower weight and additional force when the self-balancing sling is in use, and that workers can safely and quickly connect the crane hook.

[0012] As a further embodiment of the utility model: a plurality of steel wire ropes are fixedly connected to the lifting ring through a wire rope sleeve, the lifting ring and the plurality of steel wire ropes are in an umbrella-type, and the lifting ring is used to be connected to a crane hook, the lifting ring and the four steel wire ropes are in an umbrella-type, forming an inverted trapezoidal funnel shape extending downward, and this umbrella-type structure can effectively disperse the lifting load when connected to the crane hook, and reduce the stress concentration problem caused by single-point force, and the inverted trapezoidal funnel-shaped structure enables the sling to be stably stressed in multiple directions, thereby preventing the sling from tilting and shaking during the lifting process and improving the stability of the lifting, the lifting ring is connected to the crane hook, and the crane hangs the sling through the lifting ring, allowing the entire sling to be quickly and safely connected to the crane, while facilitating lifting operations at the construction site.

[0013] As a further embodiment of the utility model: the horizontal angle between the manual escalator and the middle lifting frame is α, and α is 40°~50°, preferably 45°. The manual escalator provides a safe passage, and workers can approach various parts of the sling through the manual escalator for operation or maintenance, which improves the convenience and safety of operation. Installing the manual escalator in the middle of the diagonal wire rope helps to disperse the weight of the manual escalator and the weight of the operator to four support points (i.e., four wire ropes), further improving the overall stability of the sling.

[0014] As a further embodiment of the utility model: a number of large lifting ears are provided on the middle lifting skeleton, and a number of the large lifting ears are fixedly connected with steel wire ropes. By connecting the large lifting ears to the key stress-bearing positions of the middle lifting skeleton, the overall rigidity and stability of the lifting skeleton are enhanced to prevent the sling from being deformed or damaged under heavy loads. The tension of each steel wire rope can be coordinated and adjusted during the lifting process to further balance the structural stress, ensure that the posture of the prefabricated parts remains stable, and facilitate precise positioning and installation.

[0015] As a further embodiment of the utility model: a plurality of small lifting ears are also arranged on the middle lifting skeleton, and a plurality of the small lifting ears are each provided with a lifting fixture assembly, through which the posture of the steel cage prefabricated part can be dynamically adjusted during the lifting process to maintain the balance and stability of the prefabricated part.

[0016] As a further embodiment of the utility model: the sling assembly includes a lifting chain and a hook, the lifting chain is arranged on a small lifting ear, a hook is arranged under the lifting chain, and a hook is arranged under the lifting chain. The hook is used to lift the prefabricated steel cage. The combination of the hook and the lifting chain forms a multi-level force path. The hook is connected to the small lifting ear to bear the main load, and the lifting chain disperses the load to avoid stress concentration.

[0017] As a further embodiment of the utility model: the middle lifting skeleton includes a hanging beam frame, the hanging beam frame is arranged below the bayonet steel column, and a plurality of ground beams are arranged below the hanging beam frame. The hanging beam frame and the ground beams provide stable support and a rigid platform, so that workers can more accurately position and move prefabricated parts during the lifting process, ensuring that the prefabricated parts are in the correct position during lifting and installation. The horizontal support of the ground beam can effectively reduce the left and right shaking of the hoisting equipment during the lifting process, thereby improving the stability and safety of the lifting operation.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] There are lifting rings on the bayonet steel columns, and several steel ropes are arranged around the lifting rings for connecting lifting equipment. There are also manual escalators on both sides of the bayonet steel columns to facilitate workers to operate and maintain. The middle lifting frame is arranged below the bayonet steel column. The middle lifting frame and the bayonet steel column are connected by a manual escalator to form a stable supporting structure. Several hoisting equipment components are arranged below the middle hoisting skeleton. These hoisting equipment components are used to hang the reserved hooks of the prefabricated steel cage parts to realize the overall hoisting of the steel cage. By arranging lifting rings and steel wire ropes on the bayonet steel columns, the force on the steel cage is uniform during the hoisting process. At the same time, by arranging manual escalators on both sides of the bayonet steel columns, it is convenient for workers to operate and improves the safety of operation. The use of multiple hoisting equipment components ensures the balance and stability of the prefabricated steel cage parts during the hoisting process. The hoisting equipment structure of the utility model effectively solves the problems of uneven force, unstable center of gravity and left and right shaking of traditional hoists, improves the safety and efficiency of hoisting of prefabricated box girder steel cage prefabricated parts with large span and large tonnage, and is suitable for the hoisting operation of steel cages in railway projects where manual operation is difficult and dangerous. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of a prefabricated box girder reinforcement cage hanger for railways;

[0022] Figure 2 A schematic diagram of the structure of the utility model under working condition;

[0023] Figure 3 This is a schematic diagram of the left side structure of the middle hoisting frame provided by the utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure between the lifting ring and the steel wire rope provided by the utility model.

[0025] In the figure: 1. Bayonet steel column; 11. Lifting ring; 12. Wire rope; 13. Manual escalator; 14. Wire rope sleeve; 2. Middle lifting frame; 21. Lifting beam frame; 22. Ground beam; 3. Lifting equipment assembly; 31. Lifting chain; 32. Lifting hook; 4. Large lifting lug; 5. Small lifting lug. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0027] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0028] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0029] See also Figure 1-4 As shown in the embodiment of the utility model, a prefabricated box girder steel cage hanger for railways comprises a bayonet steel column 1, a middle hoisting frame 2 and a hanger assembly 3. A lifting ring 11 is arranged on the bayonet steel column 1, a plurality of steel wire ropes 12 are arranged around the lifting ring 11, and an artificial escalator 13 is also arranged on both sides of the bayonet steel column 1;

[0030] A middle hoisting frame 2, which is arranged below the bayonet steel column 1, and a manual escalator 13 is arranged between the middle hoisting frame 2 and the bayonet steel column 1;

[0031] A plurality of sling assemblies 3, wherein the plurality of sling assemblies 3 are arranged below the middle sling frame 2;

[0032] A lifting ring 11 is provided on the bayonet steel column 1, and a plurality of steel wire ropes 12 are provided around the lifting ring 11 for connecting the lifting equipment. The lifting ring 11 is connected to the hoist hook of the lifting gantry crane. The middle lifting skeleton 2 and the bayonet steel column 1 are connected by an artificial escalator 13 to form a stable supporting structure. A plurality of sling assemblies 3 are provided below the middle lifting skeleton 2. These sling assemblies 3 are used to hang the reserved hooks of the prefabricated steel cage to realize the overall lifting of the steel cage. By arranging the lifting ring 11 and the steel wire rope 12 on the bayonet steel column 1, it is ensured that the force of the steel cage is uniform during the lifting process. At the same time, by arranging the artificial escalators 13 on both sides of the bayonet steel column 1, it is convenient for workers to operate and maintain. The workers climb to the lifting ring 11 through the artificial escalators 13. When the lifting equipment 150t gantry crane is used for hooking, the hooking operation can be carried out quickly and conveniently, reducing the safety hazard of falling from height, avoiding the situation where the wire rope 12 is too heavy and the hooking operation is difficult. Manual escalators 13 are set on both sides to facilitate workers' operation and improve operation safety. The setting of the middle lifting skeleton 2 provides additional support and stability, and the use of multiple lifting fixture assemblies 3 ensures the balance and stability of the prefabricated steel cage during the lifting process. The lifting fixture structure of the utility model effectively solves the problems of uneven force, unstable center of gravity and left and right shaking of traditional lifting fixtures, improves the safety and efficiency of lifting large-span and large-tonnage prefabricated box girder steel cage prefabricated parts, and is suitable for the lifting operation of steel cages in railway projects where manual operation is difficult and dangerous.

[0033] For further examples, see Figure 1 and Figure 2 As shown, a lifting ring 11 is clamped on the bayonet steel column 1, and the lower part of the lifting ring 11 is clamped at the bayonet (not shown in the figure) position at the uppermost end of the bayonet steel column 1. The bayonet steel column 1 is also provided with fixed iron sheets (not shown in the figure) on both sides of the lifting ring 11. Bolts (not shown in the figure) pass through the limiting holes (not shown in the figure) on the two iron sheets and the bolt holes (not shown in the figure) on the upper part of the lifting ring 11, and the lifting ring 11 clamped on the bayonet steel column 1 is bolted and fixed, so that the lifting ring 11 always maintains a vertical state, so that it can ensure that the steel wire rope 12 can withstand the lower weight and additional force when the self-balancing sling is used, and the workers can safely and quickly connect the crane hook.

[0034] For further examples, see Figure 1 , Figure 2 and Figure 4As shown, a plurality of steel wire ropes 12 are fixedly connected to the lifting ring 11 through a steel wire rope sleeve 14, and the lifting ring 11 and the plurality of steel wire ropes 12 are in an umbrella-type. In this embodiment, there are four steel wire ropes 12, and the lifting ring 11 is used to connect with the crane hook. The lifting ring 11 and the four steel wire ropes 12 are connected in an inverted trapezoidal funnel shape to form an umbrella-type. The diagonal middle part of the four steel wire ropes 12 is used to install an artificial escalator 13. The lifting ring 11 and the four steel wire ropes 12 are in an umbrella-type, forming an inverted trapezoidal funnel shape extending downward. This umbrella-type structure can effectively disperse the lifting load when connected to the crane hook, reduce the stress concentration problem caused by single-point force, and the inverted trapezoidal funnel structure enables the sling to be in multiple directions. The force is stably applied, thereby preventing the sling from tilting and shaking during the lifting process, and improving the stability of the lifting. The lifting ring 11 is connected to the crane hook through the interface. The crane hangs the sling through the lifting ring 11, allowing the entire sling to be quickly and safely connected to the crane, while facilitating the lifting operation at the construction site. In addition, the connection between the wire rope 12 and the lifting ring 11 is in an inverted trapezoidal funnel shape, so that the sling can automatically adjust its posture when subjected to force, forming a natural center of gravity distribution, which helps to maintain the balance of the sling. In the actual lifting process, this structure naturally disperses the force through the interaction of gravity and tension, so that the sling can stably lift the prefabricated steel cage and prevent left and right shaking and unstable center of gravity.

[0035] It should be noted here that in this scheme, the manual escalator 13 is usually installed in the middle of the diagonal: the manual escalator 13 is installed in the middle of the diagonal of the four steel wire ropes 12. This installation method allows the escalator to cross the central axis of the sling, so that workers can easily approach the sling from different angles during the lifting and maintenance process. The manual escalator 13 provides a safe passage. Workers can approach various parts of the sling through the manual escalator 13 for operation or maintenance, which improves the convenience and safety of operation. Installing the manual escalator 13 in the middle of the diagonal of the steel wire rope 12 helps to distribute the weight of the manual escalator 13 and the weight of the operator to four support points (i.e., four steel wire ropes 12), further improving the overall stability of the sling.

[0036] Furthermore, in one embodiment, see Figure 1 and Figure 2 As shown, the horizontal angle between the manual escalator 13 and the middle hoisting frame 2 is α, α is 40°~50°, and α is 45° in this embodiment. The manual escalator 13, the bayonet steel column 1 and the middle hoisting frame 2 are firmly welded to form a stable triangular structure, which increases the overall connection strength. The manual escalator 13 enables workers to easily reach various parts of the hoist. This inclination angle optimizes the workers' climbing path from the ground to a high place, making the operation more convenient. Compared with vertical or horizontal escalators, the 45° inclined manual escalator 13 provides a more comfortable climbing angle, reduces workers' operating fatigue, and improves work efficiency.

[0037] In one embodiment, see Figure 1 and Figure 2 As shown, a number of large lifting ears 4 are provided on the middle lifting skeleton 2, and a steel wire rope 12 is fixedly connected to the large lifting ears 4. The large lifting ears 4 are evenly distributed on the middle lifting skeleton 2 to ensure uniform force, reduce stress concentration at a certain point, and prevent structural deformation of the sling or steel cage prefabricated parts. By connecting the large lifting ears 4 to the key stress-bearing positions of the middle lifting skeleton 2, the overall rigidity and stability of the middle lifting skeleton 2 are enhanced to prevent the sling from being deformed or damaged under heavy loads. The tension of each steel wire rope 12 can be coordinated and adjusted during the lifting process to further balance the structural force, ensure that the posture of the prefabricated parts remains stable, and facilitate precise positioning and installation.

[0038] In one embodiment, see Figure 1 and Figure 2 As shown, a plurality of small lifting ears 5 are also provided on the middle lifting skeleton 2, and a lifting device assembly 3 is provided on each of the plurality of small lifting ears 5. Through the plurality of lifting device assemblies 3, the posture of the steel cage prefabricated part can be dynamically adjusted during the lifting process to maintain the balance and stability of the prefabricated part. During the lifting and moving process, the shaking and tilting of the prefabricated part can be effectively controlled.

[0039] In one embodiment, see Figure 1 and Figure 2 As shown, the sling assembly 3 includes a lifting chain 31 and a hook 32. The lifting chain 31 is arranged on the small lifting ear 5. The hook 32 is arranged under the lifting chain 31. The hook 32 is used to lift the prefabricated steel cage. The combination of the hook 32 and the lifting chain 31 forms a multi-level force path. The hook 32 is connected to the small lifting ear 5 to bear the main load. The lifting chain 31 disperses the load to avoid stress concentration. The multi-level force path enables the sling to withstand a larger load and reduce structural strain. The flexible design of the lifting chain 31 can disperse the weight of the prefabricated steel cage, evenly distribute the force, and prevent structural deformation caused by excessive force at a single point.

[0040] In one embodiment, see Figure 1 , Figure 2 and Figure 4 The middle hoisting skeleton 2 includes a hanging beam frame 21, which is arranged below the bayonet steel column 1. A number of ground beams 22 are arranged below the hanging beam frame 21. The hanging beam frame 21 and the ground beams 22 provide a stable support and a rigid platform, so that workers can more accurately position and move prefabricated parts during the hoisting process, ensuring that the prefabricated parts are in the correct position during hoisting and installation. The horizontal support of the ground beam 22 can effectively reduce the left and right shaking of the hoisting equipment during the hoisting process, thereby improving the stability and safety of the hoisting operation.

[0041] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A prefabricated box girder reinforcement cage hanger for railways, characterized in that: include: A bayonet steel column (1), wherein a lifting ring (11) is arranged on the bayonet steel column (1), a plurality of steel wire ropes (12) are arranged around the lifting ring (11), and manual escalators (13) are also arranged on both sides of the bayonet steel column (1); A middle hoisting frame (2), wherein the middle hoisting frame (2) is arranged below the bayonet steel column (1), and the artificial escalator (13) is arranged between the middle hoisting frame (2) and the bayonet steel column (1); A plurality of sling assemblies (3) are arranged below the middle sling frame (2).

2. A prefabricated box girder steel cage hanger for railway according to claim 1, characterized in that: A lifting ring (11) is clamped on the bayonet steel column (1).

3. The prefabricated box girder steel cage hanger for railway according to claim 1, characterized in that: The lifting ring (11) is fixedly connected to a plurality of steel wire ropes (12) via a steel wire rope sleeve (14); the lifting ring (11) and the plurality of steel wire ropes (12) are in an umbrella-type configuration; and the lifting ring (11) is used to be connected to a crane hook.

4. A prefabricated box girder reinforcement cage hanger for railway according to claim 3, characterized in that: The horizontal angle between the artificial escalator (13) and the middle hoisting frame (2) is α, and α is 40° to 50°.

5. The prefabricated box girder reinforcement cage hanger for railway according to claim 1, characterized in that: A plurality of large lifting ears (4) are arranged on the middle lifting frame (2), and a steel wire rope (12) is fixedly connected to each of the large lifting ears (4).

6. A prefabricated box girder reinforcement cage hanger for railway according to claim 5, characterized in that: The middle lifting frame (2) is also provided with a plurality of small lifting ears (5), and each of the small lifting ears (5) is provided with a lifting tool assembly (3).

7. A prefabricated box girder reinforcement cage hanger for railway according to claim 6, characterized in that: The sling assembly (3) comprises a sling chain (31) and a sling hook (32); the sling chain (31) is arranged on the small sling ear (5); and the sling hook (32) is arranged below the sling chain (31).

8. The prefabricated box girder reinforcement cage hanger for railway according to claim 1, characterized in that: The middle lifting frame (2) comprises a hanging beam frame (21), the hanging beam frame (21) is arranged below the bayonet steel column (1), and a plurality of ground beams (22) are arranged below the hanging beam frame (21).

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