CN203269355U - A spreader for lifting concrete pipes - Google Patents

Abstract

A lifting appliance for lifting a concrete pipe comprises a lifting beam, a lifting lug and two lifting hooks, wherein the two lifting hooks are respectively a movable lifting hook and a fixed lifting hook, the fixed lifting hook is fixed on the lifting lug, the movable lifting hook is rotatably connected with the lifting lug, and the lifting lug is provided with a positioning structure capable of preventing the movable lifting hook from being opened outwards or reset inwards; the upper surfaces of the hooking parts of the fixed lifting hook and the movable lifting hook are arc-shaped; the upper part of the hanging beam is provided with a hanging part. Because the upper surface of the hook part of the lifting hook is arc-shaped, the contact surface with the arc surface on the inner side of the concrete pipe is large during lifting, the concrete pipe cannot be damaged, and the lifting quality is ensured; because the movable lifting hook is connected with the lifting lug in a rotating mode, the movable lifting hook can be matched with the fixed lifting hook to complete the lifting of the concrete pipe, the movable lifting hook is limited by the aid of the positioning structure, safety of workers is guaranteed, the concrete pipe is prevented from falling and being damaged during lifting, the concrete pipe lifting device is simple to manufacture, low in cost and convenient to operate, and the lifting efficiency is accelerated when the concrete pipe lifting device is widely suitable for operation sites.

Description

A spreader for lifting concrete pipes

【Technical field】

The utility model relates to a hoisting tool, in particular to a hoisting tool used for hoisting concrete pipes in concrete pipe production workshops, vehicle transportation, construction sites and other places.

【Background technique】

In the production of concrete pipes in the workshop, the concrete pipes for vehicle transfer and the laying of concrete pipes for municipal road construction, the concrete pipes need to be hoisted multiple times. The traditional hoisting method is to use steel wire ropes to directly pass through the pipes or put them outside the pipes. The lifting method is not only easy to damage the concrete pipe, but also it is difficult to grasp the balance of the concrete pipe during the lifting process. Moreover, when the weight of the concrete pipe is too heavy, the steel wire rope is also difficult to support, which is easy to cause the rope to break and cause the concrete pipe to fall and be damaged. Or hurt the staff at the scene, which is extremely unsafe.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a hoisting tool for hoisting concrete pipes, which is simple in manufacture, low in cost, convenient in operation, good in safety, and has no influence on the quality of the pipes during the hoisting process.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A hoisting tool for hoisting concrete pipes, comprising a hoisting beam with a steel frame structure, hoisting lugs formed at both ends of the hoisting beam, and two hoisting hooks respectively hung on the two hoisting lugs, the two hoisting hooks They are respectively a moving hook and a fixed hook. The fixed hook is fixed on the corresponding lifting lug, and the moving hook is connected by rotation between the rotating shaft and the corresponding lifting lug. The lifting lug is also provided with a positioning structure that can prevent the moving hook from opening or resetting inward; the upper surfaces of the hooking parts of the fixed hook and the moving hook are arc-shaped; There is a lifting part for hooking on the lifting device.

In an improved solution to the above-mentioned hanger for hoisting concrete pipes, the positioning structure includes a receptacle that runs through the lifting lug laterally on the outside of the movable hook, and an inserting plate that can be inserted into the receptacle. .

In an improved solution to the above-mentioned hanger for lifting concrete pipes, the lifting part is a lifting hole arranged in the middle of the upper part of the lifting beam.

In an improved solution to the above-mentioned hanger for lifting concrete pipes, the lifting parts are two hanging ropes fixedly connected to both sides of the upper part of the hanging beam through shackles.

In an improvement to the above-mentioned hanger for lifting concrete pipes, the lifting lug is an inverted "U"-shaped structure with an opening downward, and the lifting hook is connected in the middle of the upper part of the lifting lug.

In an improved solution to the above-mentioned sling for lifting concrete pipes, a damage reduction sleeve is fitted on the outer wall of the hooking portion of the fixed and moving hooks.

In an improved solution to the above-mentioned hanger for lifting concrete pipes, several reinforcing ribs are welded on both sides of the hanging beam.

Compared with the prior art, the beneficial effect of the utility model is that: since the upper surface of the hook part of the hook is arc-shaped, the contact surface with the inner arc surface of the concrete pipe is large when the concrete pipe is hoisted, which will not affect the hoisting. The concrete pipe is damaged, which ensures the quality of the hoisting; and because it uses the rotating connection between the moving hook and the lifting lug, the moving hook can rotate inward or outward, and cooperate with the fixed hook to complete the hoisting of the concrete pipe. The positioning structure limits the position of the moving hook, which can not only ensure the safety of the staff during operation, but also ensure that the concrete pipe will not fall and be damaged during hoisting. Therefore, the utility model ensures the safety and quality of hoisting. It is simple, low in cost, and easy to operate, and can be widely adapted to the work site and can also speed up the efficiency of hoisting.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

【Description of drawings】

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a view along direction A in Fig. 1 .

【Detailed ways】

A spreader for lifting concrete pipes, as shown in Figures 1 and 2, includes a hanging beam 10 with a steel frame structure, lifting lugs 20 formed at both ends of the hanging beam 10, and hanging lugs 20 respectively suspended on the two lifting lugs 20. Two hooks 30; the two hooks 30 are respectively a moving hook 31 and a fixed hook 32, and the fixed hook 32 is fixed on the corresponding lifting ear 20, and the moving hook 31 Through the rotary connection between the rotating shaft 40 and the corresponding lifting lug 20, a positioning structure capable of preventing the moving hook 31 from opening outward or inwardly resetting is also provided on the lifting lug 20 corresponding to the moving hook 31; The upper surfaces of the hooking parts of the hook 32 and the movable hook 31 are arc-shaped, and a lifting part for hooking on the lifting device is provided on the top of the suspension beam 10 . When the utility model does not need to be hoisted, the movable hook 31 is in an open state, and the positioning structure blocks the inward return of the movable hook 31. When the lifting device lifts the lifting beam 10 and moves to the top of the concrete pipe to be hoisted, the fixed hook 32 is inserted into one end of the concrete pipe, and then the positioning structure is operated to make After removing the limit of the movable hook 31, the movable hook 31 is swung to the other end of the concrete pipe and stretched in, and then the positioning structure is used to lock the movable hook 31 to prevent it from slipping out of the concrete pipe. Hook the concrete pipe; then you can start to hoist the concrete pipe, move the concrete pipe to the designated position by controlling the movement of the lifting beam 10 through the lifting device, and then release the limit of the positioning structure to the moving hook 31 , just can move suspension hook 31 and fixed suspension hook 32 to take out from the two ends of concrete pipe, so just finished the hoisting of a concrete pipe.

As can be seen from the above, since the upper surface of the hooking part of the hook 30 of the utility model is arc-shaped, compared with the traditional hoisting device hoisted by a steel wire rope, when the concrete pipe is hoisted, it will contact the arc surface inside the concrete pipe. The area is greatly increased, it will not cause damage to the concrete pipes hoisted on the two hooks 30, and the quality of hoisting can be guaranteed; and because it utilizes the rotating connection between the moving hook 31 and the lifting lug 20, the moving hook 31 can be inward or Rotate and swing outward, cooperate with the fixed hook 32 to hang on the concrete pipe to complete the hoisting, and then use the positioning structure to limit the position of the movable hook 31, so that the movable hook 31 can keep opening outward or fall back completely. This not only ensures that the staff will not be injured due to the sudden fall of the outwardly opened moving hook 31 during operation, but also ensures that the moving hook 31 will not suddenly open outward during hoisting and cause the concrete Therefore, the utility model ensures the safety and quality of hoisting. It is simple to manufacture, low in cost, and easy to operate. It can be widely adapted to the work site and can also speed up the efficiency of hoisting.

In the embodiment, as shown in FIGS. 1 and 2 , the positioning structure includes a socket 51 that is arranged on the outside of the movable hook 31 and runs through the lifting ear 20 in a transverse direction, and an inserting plate 52 that can be inserted into the socket 51, When the concrete pipe will be hoisted like this, the plug-in plate 52 inserted in the jack 51 can be extracted earlier to remove the limit of the moving hook 31, and then the moving hook 31 is lifted outwards to the maximum position of the moving hook 31. The inner side is out of the range of the jack 51, and then the inserting plate 52 is inserted into the jack 51, so that the opened movable hook 31 cannot fall back. At this time, one end of the concrete pipe can be inserted into the fixed hook 32 , the other end is aligned with the hooking direction of the movable hook 31, and then the inserting plate 52 is drawn out, and the traction movable hook 31 falls back until the other end hooked into the concrete pipe. At this time, the movable hook 31 is basically perpendicular to the suspension beam. Finally, the flashboard 52 is inserted into the jack 51 to limit the moving hook 31, and like this, the hooking of the concrete pipe is completed; 31 is fixed to outwardly open state, just can two suspension hooks 30 be taken out from the two ends of concrete pipe.

In the embodiment, as shown in Figures 1 and 2, the lifting part is a lifting hole 11 located in the middle of the upper part of the lifting beam 10, and generally the hook of a crane or a crane is hung on the lifting hole 10 during operation. , so that both the strength of hoisting can be guaranteed and the balance of the concrete pipe during hoisting can be guaranteed; of course, the hoisting part can also be two suspension ropes 70 fixedly connected to both sides of the upper part of the suspension beam 10 through shackles 80 respectively, so that when hoisting For relatively light concrete pipes, the other ends of the two suspension ropes 70 can be fixedly connected with the crane or the hook of the crane, so that while ensuring its balance, the operation during hoisting is also facilitated and the hoisting work is improved. s efficiency.

In the embodiment, as shown in FIG. 2, the lifting lug 20 is an inverted "U" structure with the opening downward, and the lifting hook 30 is connected in the middle of the upper part of the lifting lug 20, so that not only can the hook 30 balance, but also strengthened the strength of the lug 20.

In the embodiment, as shown in FIG. 2 , a damage reduction sleeve 60 is set on the inner arc surface of the fixed hook 32 and the moving hook 31 , thus reducing the time required for hoisting the concrete pipe on the two hooks 30 . The damage caused to the concrete pipe during lifting ensures the lifting quality during operation.

In order to strengthen the strength of the hanging beam 10 , in the embodiment shown in FIG. 1 , several reinforcing ribs 12 are welded on both sides of the hanging beam 10 .

Although the present utility model has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that the present utility model can be modified without departing from the principle and spirit scope of the present utility model defined by the claims. Various changes or modifications are made to the utility model. Therefore, the detailed description of the embodiments of the present disclosure is only for explaining, not for limiting the utility model, but the scope of protection is defined by the content of the claims.

Claims (7)

1. A hanger for lifting concrete pipes, comprising a hanging beam with a steel frame structure, hanging lugs formed at the two ends of the hanging beam, and two suspension hooks suspended on the two hanging lugs respectively, it is characterized in that the The above two hooks are respectively a moving hook and a fixed hook, and the fixed hook is fixed on the corresponding lifting lug, and the moving hook is connected by rotation between the rotating shaft and the corresponding lifting lug. The lifting lug corresponding to the moving hook is also provided with a positioning structure that can prevent the moving hook from opening or resetting inward; the upper surfaces of the hooking parts of the fixed hook and the moving hook are arc-shaped; The upper part of the hanging beam is provided with a lifting part for hooking on the lifting device. 2. A hanger for hoisting concrete pipes according to claim 1, characterized in that, the positioning structure includes a socket that runs through the lifting lug laterally on the outside of the movable hook, and can be inserted into the socket. Insertion plate in the hole. 3. A kind of hanger that is used for hoisting concrete pipe according to claim 2, is characterized in that, described hoisting part is the hoisting hole that is located at the middle of the upper part of the hoisting beam. 4. A hoisting tool for hoisting concrete pipes according to claim 2, characterized in that, the hoisting parts are two hoisting ropes fixedly connected to both sides of the upper part of the hoisting beam through shackles respectively. 5. A hoisting tool for hoisting concrete pipes according to claim 3 or 4, wherein the lifting lug is an inverted "U" structure with the opening downward, and the hook is connected to In the middle of the upper part of the lug. 6. A hanger for hoisting concrete pipes according to claim 5, characterized in that, the outer wall of the hooking part of the fixed hook and the movable hook is fitted with a loss sleeve. 7. A hanger for hoisting concrete pipes according to claim 6, characterized in that several reinforcing ribs are welded on both sides of the hanging beam.

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