CN207748760U - A kind of bridge crane of hoisting large-size drainpipe - Google Patents

Abstract

The utility model discloses a bridge-type crane for hoisting a large drainage pipe, relates to the technical field of cranes, and solves the problem in the prior art that the inertial swing of the crane which is unstable in lifting is likely to cause safety accidents; the utility model includes a cart, a bridge, and an end girder , driving motor, hoisting motor, reel, wire rope, hook, the cart is set on the end beam and moves freely along the end beam through the drive motor, the bridge is fixed on the cart by bolts, and the bridge is equipped with electric hoists. On the mounting plate where the electric hoist is installed, there is a walking wheel slidingly connected with the bridge under the mounting plate, and the drum and the lifting motor that drives the drum to rotate are all set directly above the mounting plate; it also includes a pulley assembly and a pulley block for supporting The support assembly of the piece, the support assembly is arranged on the mounting plate, and the steel wire rope output around one end of the drum is connected with the other end of the drum through the pulley assembly. By implementing the technical solution, it is beneficial to improve the stability and safety factor in the hoisting process of the crane.

Description

A bridge crane for hoisting large drainage pipes

technical field

The utility model relates to the technical field of cranes, in particular to a bridge crane for hoisting large drainage pipes.

Background technique

Bridge crane is a kind of bridge type crane whose bridge frame runs on elevated track, also known as overhead crane. The bridge frame of the bridge crane runs longitudinally along the rails laid on the elevated sides on both sides, and the hoisting trolley runs horizontally along the rails laid on the bridge frame, forming a rectangular working range, which can make full use of the space under the bridge frame for hoisting and transporting materials. Hindered by ground equipment. The lifting mechanism includes a motor, a brake, a reducer, a drum and a pulley block. The motor drives the reel to rotate through the reducer, so that the wire rope is wound on the reel or lowered from the reel to lift the heavy object. The trolley frame is a frame for supporting and installing components such as the lifting mechanism and the trolley running mechanism, and is usually a welded structure.

When welding the drain pipe, in order to ensure the welding quality, the position of the drain pipe needs to be adjusted for welding. However, when welding a large drain pipe, due to the high quality of the pipe, it is very difficult to adjust the position of the pipe, so a hoist that can lift a large drain pipe is needed Heavy equipment, the prior art usually uses a separate hook to lift the lifting item, which has the following disadvantages: 1. Because the large drainage pipe is not only large in volume and quality, but also has a certain length, it is difficult to use a bridge crane to lift large The center of gravity of the drainpipe may easily cause it to tilt or even fall off after lifting, resulting in a safety accident; 2. During the lifting process using a separate pulley, the two sets of wire ropes wound on both sides of the pulley are likely to swing inertially during the movement of the trolley and hang on the The unstable inertial swing in the air is likely to cause impacts on both sides, resulting in safety accidents.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a bridge crane for hoisting large-scale drainage pipes to solve the problem of reducing the inertia of two sets of wire ropes wound on both sides of the pulley in the process of lifting large-scale drainage pipes. Swing to enhance stability during lifting.

The utility model specifically adopts the following technical solutions in order to achieve the above object:

An overhead crane for hoisting a large drainage pipe, comprising a cart, a bridge, an end beam, a driving motor, a hoisting motor, a reel, a steel wire rope, and a hook, the end beam is a horizontally arranged I-shaped steel rail, and the large The cart is set on the end beam and moves freely along the end beam by the drive motor. The bridge is fixed on the cart by bolts. The bridge is equipped with an electric hoist and a mounting plate for installing the electric hoist. Below the mounting plate There are walking wheels slidingly connected with the bridge, and the drum and the hoisting motor that drives the drum to rotate are all arranged directly above the installation plate; it also includes a pulley assembly and a support assembly for supporting the pulley assembly, which is wound around one end of the drum The output steel wire rope is connected with the other end of the reel through the pulley assembly, and the hook is arranged at the lower end of the pulley assembly.

The working principle of the basic scheme of the utility model is: adopting the above structure, the steel wire rope output around one end of the reel is connected to the other end of the reel through the pulley assembly, and the pulley assembly and the supporting assembly for supporting the pulley assembly are all set on the installation plate , to avoid hanging the pulley directly on the wire rope and swinging with the wire rope in the prior art, and the transmission structure formed by the pulley assembly can increase the radius of curvature of the wire rope wound on both sides of the pulley block, increase the working space of the wire rope, and avoid heavy lifting In the process of winding the type drain pipe, the inertial swing of the adjacent two groups of steel wire ropes on both sides of the pulley is too large, which will easily cause impact on both sides, and improve the stability and safety factor of the crane structure.

Further, the pulley assembly includes three guide pulleys, and the three guide pulleys are arranged on the support assembly and form a triangular mechanism by winding the wire rope tightly. Utilizing the stability of the triangular structure can improve the stress strength of the support structure supporting the pulley assembly, and the pulleys on both sides can directly increase the radius of curvature of the wire rope and increase the working space of the wire rope.

Further, the support assembly includes vertical telescopic rods arranged symmetrically along both ends of the mounting plate and a horizontal cross rod fixedly connected to the lower ends of the two vertical telescopic rods. The vertical telescoping rods symmetrically arranged at both ends of the mounting plate move upward with the wire ropes. On the one hand, they can be used to support the pulley assembly, and can also avoid the inertial swing of the two sets of wire ropes wound around the two sides of the pulley assembly, thereby enhancing the stability of the structure.

Further, two of the three guide pulleys are arranged symmetrically on the lower ends of the two vertical telescopic rods, and the other pulley is arranged on the horizontal cross bar. The wire rope output from one end of the reel is connected to the other end of the reel through two pulley outer circular surfaces symmetrically arranged at the lower ends of the two vertical expansion rods, which can effectively increase the radius of curvature of the wire rope.

Further, the three guide pulleys are respectively fixedly connected to the two vertical telescopic rods and the horizontal cross bar through bolts or cotter pins, and support bolts are provided on the two vertical telescopic rods. The support bolts are used to improve the support strength of the support rods of the vertical telescopic rods, facilitate the winding of the steel wire ropes, and play a limiting role for the winding of the steel wire ropes.

Further, a reinforcing rod is arranged between the pulleys arranged on the two vertical telescopic rods. The rectangular mechanism formed by the reinforcing rod, two vertical telescopic rods and the horizontal cross rod can further increase the structural stability of the support assembly supporting the pulley assembly and improve the lifting safety factor.

Further, a sliding rod and a support ring A are provided at both ends of the horizontal bar, a chute cooperating with the sliding bar is provided in the horizontal bar, and a supporting ring B is provided at the free end of the sliding bar. The support ring A set on the horizontal bar and the support ring B set on the sliding bar can effectively increase the suspension points for hanging large drainpipes, increase the stress points of the drainpipes, and avoid the center of gravity of the drainpipes from being unbalanced due to stress concentration. Make sure that the drainage pipe is tilted during the lifting process to ensure stable lifting.

Further, the hook includes a hanging post and two two-way hooks arranged opposite to the hanging post, and a locking ring is provided between the hanging post and the hook. Prevent the lanyard hanging the large drainage pipe from falling off from the hook due to the impact of heavy objects, causing safety accidents and improving the safety factor.

As mentioned above, the beneficial effects of the utility model are as follows:

1. The utility model is provided with a pulley assembly instead of a single pulley and a support assembly for supporting the pulley assembly. The steel wire rope output from one end of the reel is connected to the other end of the reel through the pulley assembly arranged on the support assembly. The transmission structure composed of parts can increase the radius of curvature of the wire ropes on both sides of the pulley block, increase the working space of the wire ropes, and avoid excessive inertial swing of the two adjacent groups of wire ropes wound on both sides of the pulley during the process of lifting large drainage pipes It is easy to cause the problem of impact on both sides, and improve the stability and safety factor of the crane structure.

2. The pulley assembly in the utility model includes three guide pulleys, the three guide pulleys are arranged on the support assembly and form a triangular mechanism through the winding of the steel wire rope, and the stability of the triangular structure can be used to improve the support structure of the support pulley assembly. strength, and the pulleys on both sides can directly increase the radius of curvature of the wire rope and increase the working space of the wire rope; specifically, the vertical telescopic rods symmetrically arranged at both ends of the mounting plate move upward with the wire rope, which can be used to support the pulley assembly on the one hand. , It can also avoid the inertial swing of the two sets of steel wire ropes around the two sides of the pulley assembly, and enhance the stability of the structure.

3. In the utility model, a reinforcing rod is arranged between the pulleys on the two vertical telescopic rods, and the superposition of the rectangular mechanism and the triangular mechanism formed by the reinforcing rod, the two vertical telescopic rods and the horizontal bar can further increase the pulley block The structural stability of the components and the support assembly supporting the pulley assembly improves the lifting safety factor.

4. The supporting ring A arranged on the horizontal bar and the supporting ring B arranged on the sliding rod in the utility model can effectively increase the suspension points for hanging large drainage pipes, increase the stress points of the drainage pipes, and avoid the stress concentration due to stress. However, if the center of gravity of the drainpipe is not correctly identified, the drainpipe will be tilted during the lifting process, so as to achieve a good stress effect and ensure the stability of the lifting.

Description of drawings

Fig. 1 is a structural schematic diagram of a bridge crane for hoisting large drainage pipes of the present invention.

Reference signs: 01-cart, 02-bridge, 03-end beam, 04-driving motor, 05-hoisting motor, 06-drum, 07-wire rope, 08-hook, 09-electric hoist, 10-installation Plate, 11-walking wheel, 12-pulley assembly, 13-guide pulley, 14-vertical telescopic rod, 15-horizontal bar, 16-support bolt, 17-strengthening rod, 18-sliding rod, 19-support ring A , 20-support ring B, 21-hanging post, 22-locking ring.

Detailed ways

In order for those skilled in the art to better understand the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and the following embodiments.

Please refer to Fig. 1, the present embodiment provides a kind of overhead crane for hoisting large drainage pipes, including cart 01, bridge 02, end beam 03, drive motor 04, lifting motor 05, reel 06, wire rope 07, The hook 08 and the end beam 03 are I-shaped rails set horizontally. The cart 01 is set on the end beam 03 and moves freely along the end beam 03 through the drive motor 04. The bridge 02 is fixed on the cart 01 by bolts. The bridge 02 An electric hoist 09 and a mounting plate 10 for installing the electric hoist 09 are arranged on the top, a walking wheel 11 slidingly connected with the bridge 02 is provided under the mounting plate 10, and the reel 06 and the lifting motor 05 for driving the reel 06 to rotate are all provided Directly above the mounting plate 10 ; a pulley assembly 12 and a support assembly for supporting the pulley assembly 12 are also included, and the wire rope 07 output around one end of the drum 06 is connected to the other end of the drum 06 through the pulley assembly 12 .

Specifically, the pulley assembly 12 includes three guide pulleys 13, and the three guide pulleys 13 are arranged on the support assembly and form a triangular mechanism under the tight winding of the steel wire rope 07; The strength of the force, and the pulleys on both sides can directly increase the radius of curvature of the wire rope 07, increasing the working space of the wire rope 07. The support assembly includes a vertical telescopic rod 14 symmetrically arranged at both ends of the mounting plate 10 and a horizontal bar 15 fixedly connected to the lower ends of the two vertical telescopic rods 14. The vertical telescopic rod 14 symmetrically arranged at both ends of the mounting plate 10 follows the wire 07 moves upwards, can be used for supporting pulley assembly 12 on the one hand, also can avoid the inertial swing of two groups of wire ropes 07 around pulley assembly 12 both sides, strengthen the stability of structure.

Wherein, among the three guide pulleys 13, two pulleys are symmetrically arranged on the lower ends of the two vertical telescopic rods 14, and the other pulley is arranged on the horizontal cross bar 15. Specifically, among the three guide pulleys 13, two of the pulleys are arranged symmetrically on the lower ends of the two vertical telescopic rods 14, and the other pulley is arranged on the horizontal bar 15, and the vertical telescopic rods 14 are vertically slidable and nested on each other. A cylindrical steel pipe together; the vertical telescopic rod 14 symmetrically arranged at both ends of the mounting plate 10 moves upward with the wire rope 07, which can be used to support the pulley assembly 12 on the one hand, and can also avoid the two groups of wire ropes 07 wound around the pulley assembly 12 on both sides. Inertia swings to enhance the stability of the structure. At the same time, the steel wire rope 07 output from one end of the reel 06 is connected to the other end of the reel 06 through two pulley outer circular surfaces symmetrically arranged at the lower ends of the two vertical telescopic rods 14, which can effectively increase the radius of curvature of the wire rope 07 .

Further, a reinforcing rod 17 is arranged between the pulleys on the two vertical telescopic rods 14 . The superposition of the rectangular mechanism and the triangular mechanism formed by the reinforcing rod 17, the two vertical telescopic rods 14 and the horizontal cross bar 15 can further increase the structural stability of the pulley assembly 12 and the supporting assembly supporting the pulley assembly 12, and improve the lifting safety factor.

In addition, the three guide pulleys 13 are respectively fixedly connected to the two vertical telescopic rods 14 and the horizontal cross rod 15 through bolts or cotter pins, and the two vertical telescopic rods 14 are provided with support bolts 16 . The support bolts 16 are used to improve the support strength of the support rods of the vertical telescopic rods 14, facilitate the winding of the steel wire rope 07, and play a position-limiting effect on the winding of the steel wire rope 07.

Further, two ends of the horizontal bar 15 are provided with a sliding bar 18 and a support ring A19, the horizontal bar 15 is provided with a chute matching with the sliding bar 18, and the free end of the sliding bar 18 is provided with a supporting ring B20. The supporting ring A19 arranged on the horizontal bar 15 and the supporting ring B20 arranged on the sliding bar 18 can effectively increase the suspension points for hanging large drainage pipes, increase the stress points of the drainage pipes, and avoid the damage of the drainage pipes due to stress concentration. The inaccurate center of gravity will cause the drainage pipe to tilt during the lifting process, so as to ensure stable lifting.

In addition, the hook 08 is fixed on the lower end of the pulley on the horizontal bar 15 . The hook 08 includes a hanging post 21 and two bidirectional hooks 08 opposite to the hanging post 21 . A locking ring 22 is provided between the hanging post 21 and the hook 08 . Prevent the lanyard that hangs the large drainage pipe from falling off from the hook 08 due to the impact of heavy objects, causing safety accidents and improving the safety factor.

In this example, the above-mentioned structure is adopted. When hoisting a large-scale drainage pipe, the steel wire rope 07 output from one end of the reel 06 is connected to the other end of the reel 06 after being tightly wound around the outer circular surfaces of the three guide pulleys 13 of the support assembly. The hook 08 and the support ring A19 of the horizontal bar 15 and the support ring B20 on the slide bar 18 hang the 6 end points of the drainage pipe to increase the stress point and avoid the safety accident caused by the tilt of the drain pipe due to the failure of the center of gravity of the drain pipe; further, the pulley block Part 12 and the supporting assembly for supporting the pulley assembly 12 are all arranged on the mounting plate 10, avoiding that the pulley is directly suspended on the wire rope 07 and swinging with the wire rope 07 in the prior art, and the transmission structure formed by the pulley assembly 12 can be Increase the radius of curvature of the wire rope 07 wound on both sides of the pulley block, increase the working space of the wire rope 07, and avoid the excessive inertial swing of the adjacent two groups of wire rope 07 wound on both sides of the pulley in the process of lifting a large drainage pipe, which is easy to damage the two The problem of impact caused by the side can improve the stability and safety factor of the crane structure; in addition, three guide pulleys 13 are arranged on the support assembly and form a triangular mechanism under the tight winding of the steel wire rope 07, and the stability of the triangular structure can be used to improve the stability of the support pulley block. The stress strength of the supporting structure of the piece 12, the superposition of the rectangular mechanism and the triangular mechanism formed by the reinforcing rod 17, the two vertical telescopic rods 14 and the horizontal cross bar 15 can further increase the structure of the pulley assembly 12 and the supporting assembly supporting the pulley assembly 12 Stability, improve lifting safety factor, suitable for popularization and application.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. The scope of patent protection of the utility model is subject to the claims. Equivalent structural changes should be included in the protection scope of the present utility model in the same way.

Claims (8)

1. An overhead crane for hoisting large-scale drainage pipes, comprising a cart, a bridge, an end beam, a drive motor, a hoisting motor, a reel, a wire rope, and a hook, and the end beam is a horizontally arranged I-shaped steel rail, and the The cart is set on the end beam and moves freely along the end beam by the drive motor, and the bridge is fixed on the cart by bolts, and it is characterized in that an electric hoist and an installation for installing the electric hoist are arranged on the bridge There is a walking wheel slidingly connected with the bridge under the mounting plate, and the reel and the hoisting motor that drives the reel to rotate are all arranged directly above the mounting plate; it also includes a pulley assembly and a pulley assembly for supporting the pulley assembly. A support assembly, the support assembly is arranged on the mounting plate, the wire rope output around one end of the drum is connected to the other end of the drum through the pulley assembly, and the hook is arranged at the lower end of the pulley assembly. 2. The bridge crane for hoisting large drainage pipes according to claim 1, characterized in that: the pulley assembly includes three guide pulleys, and the three guide pulleys are arranged on the support assembly and tightened by the wire rope form a triangle mechanism. 3. The bridge crane for hoisting large drainage pipes according to claim 2, characterized in that: the support assembly includes vertical telescopic rods arranged symmetrically along both ends of the mounting plate and connected with the lower ends of the two vertical telescopic rods Fixedly connected horizontal bars. 4. The bridge crane for hoisting large drainage pipes according to claim 3, characterized in that: among the three guide pulleys, two pulleys are symmetrically arranged at the lower ends of the two vertical telescopic rods, and the other pulley is arranged on the horizontal bar. 5. The bridge crane for hoisting large drainage pipes according to claim 4, characterized in that: the three guide pulleys are respectively fixedly connected to the two vertical telescopic rods and the horizontal bar through bolts or cotter pins, And support bolts are provided on the two vertical telescopic rods. 6. The bridge crane for hoisting large drainage pipes according to claim 4, characterized in that: a reinforcing rod is arranged between the pulleys arranged on the two vertical telescopic rods. 7. The bridge crane for hoisting large drainage pipes according to claim 3, characterized in that: the two ends of the horizontal bar are provided with sliding bars and support rings A, and the horizontal bar is provided with sliding bars. The chute fitted with the rod, and the free end of the sliding rod is provided with a supporting ring B. 8. A kind of bridge crane for hoisting large drainage pipes according to claim 1, characterized in that: said hook comprises a hanging post and two two-way hooks arranged opposite to the hanging post, and a set is provided between said hanging post and the hook. With locking ring.