CN212246016U

CN212246016U - Front support device of auxiliary arm of crane

Info

Publication number: CN212246016U
Application number: CN201922193081.2U
Authority: CN
Inventors: 王庆贺
Original assignee: Tianjin Wujin Machinery Equipment Co ltd
Current assignee: Tianjin Wujin Machinery Equipment Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-12-29
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a sub-boom fore-stock device of hoist, comprising a base plate, a plurality of standard festival framves that are located same plumb line of fixedly connected with directly over the bottom plate are a plurality of bottom plate one end fixedly connected with rotates the tower is kept away from to standard festival frame, rotate on the tower fixed surface be connected with main arm and sub-boom, the sub-boom includes the dead lever, the dead lever is connected with surface fixed on the rotation tower, the dead lever is kept away from and is rotated tower one end and seted up smooth chamber, sliding connection has first extension rod in the smooth chamber, first extension rod is kept away from and is rotated tower one end fixedly connected with counterweight rod, the counterweight rod is kept away from dead lever one end fixedly connected with balancing weight, the sub-boom top is provided with the sub. The utility model discloses can adjust the fly jib length according to the weight of goods to the limit of the weight of lifting by crane that the realization changes the main arm makes the tower crane receive goods to lift by crane limit weight and influences for a short time.

Description

Front support device of auxiliary arm of crane

Technical Field

The utility model relates to a hoist technical field especially relates to a sub-jib front support device of hoist.

Background

The tower crane is the most common hoisting equipment in construction sites, and is called a tower crane, which is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction by lengthening (height) one section by one section (called a standard section for short). The tower crane is an indispensable device on a construction site. The tower crane tip has the function of bearing the upper load transmitted by the boom guy rope and the balance arm guy rope, and directly transmits the upper load to the tower body structure through the rotary tower, the rotary platform, the bearing seat and other structural components, the self-elevating tower top has a truncated cone column type, a forward or backward inclined truncated cone column type, a herringbone frame type and an inclined support frame type, all the upper rotary tower cranes need to be provided with balance weights, and the function of the tower crane tip is to support the balance weights so as to form a balance moment which is required in design and has the action direction opposite to the hoisting moment. In addition to the counterweight, a hoisting mechanism is often provided at the tail. The hoisting mechanism and the balance weight are arranged at the tail end of the balance arm together, so that partial balance weight function can be achieved, and the distance between the rope reel and the tower tip guide wheel is increased, so that the steel wire rope can be conveniently wound and rope disorder is avoided. The dosage of the balance weight is in inverse proportion to the length of the balance arm, and the length of the balance arm is in proportion to the length of the crane boom. The balance weight is considerable, and the light tower crane generally needs at least three tons to four tons and the heavy tower crane needs nearly thirty tons.

In the prior art, a counterweight auxiliary arm is arranged at the rear side position of a main arm of a crane in order to balance the special tower crane, the counterweight auxiliary arm is generally short and provided with a counterweight block in order to reduce wind and save materials, but the counterweight of the auxiliary arm is changed only by changing the weight of the counterweight and the length of the auxiliary arm, so that the maximum weight of the main arm capable of being hoisted after the crane is built is limited, and the main arm is generally hoisted and carried in batches when materials with large hoisting weight are hoisted, so that the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a front bracket device of an auxiliary boom of a crane.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sub boom fore-stock device of hoist, includes the bottom plate, a plurality of standard festival framves that are located same plumb line of fixedly connected with directly over the bottom plate are a plurality of bottom plate one end fixedly connected with rotates the tower is kept away from to standard festival frame, rotate the tower on fixed surface be connected with main arm and sub-boom, the sub-boom includes the dead lever, dead lever and rotation tower upper surface fixed connection, the dead lever is kept away from and is rotated tower one end and seted up smooth chamber, sliding connection has first extension rod in the smooth chamber, rotation tower one end fixedly connected with counterweight rod is kept away from to first extension rod, counterweight rod one end fixedly connected with balancing weight is kept away from to the counterweight rod, the sub-boom top is provided with the.

As a further description of the above technical solution:

the top of the rotating tower is fixedly connected with a balance tower, the tower tip position of the balance tower is fixedly connected with a first balance steel pipe, and one end, far away from the rotating tower, of the first balance steel pipe is fixedly connected with the top of one end, far away from the rotating tower, of the main arm.

As a further description of the above technical solution:

the upper surface of the balance weight rod is rotatably connected with a limiting rod, one end, far away from the balance weight rod, of the limiting rod is fixedly connected with a second extension rod, the tower tip position of the balance tower is rotatably connected with a second balance steel pipe, and one end port, far away from the balance tower, of the second balance steel pipe is connected with the second extension rod in a sliding mode.

As a further description of the above technical solution:

the front support of the auxiliary arm comprises an arm rod, one end of the arm rod is rotatably connected with the side wall of the fixed rod, one end, far away from the fixed rod, of the arm rod is rotatably connected with the side wall of the second balance steel pipe, and a hydraulic cylinder is rotatably connected between the second balance steel pipe and the arm rod.

As a further description of the above technical solution:

and a lifting hook is connected below the main arm in a sliding manner.

As a further description of the above technical solution:

the weight rod, the fixing rod, the first extension rod, the limiting rod, the second extension rod, the second balance steel pipe and the arm rod are all made of manganese steel materials.

The utility model discloses following beneficial effect has:

the utility model discloses a set up auxiliary jib, vice wall fore-stock and pneumatic cylinder, can control the auxiliary jib fore-stock to drive the balanced steel pipe of second and promote the counterweight rod through the pneumatic cylinder extension with shortening and remove for the auxiliary jib extension or shorten, extend when the auxiliary jib and make the main arm lift by crane the weight limit and will increase, make the auxiliary jib length reduce when lifting by crane weight less simultaneously, reduce the windage of auxiliary jib.

The utility model discloses can adjust the fly jib length according to the weight of goods to the limit of the weight of lifting by crane that the realization changes the main arm makes the tower crane receive goods to lift by crane limit weight and influences for a short time.

Drawings

Fig. 1 is a front view of a sub-boom front support device of a crane according to the present invention;

fig. 2 is an enlarged view of the jib position of the jib front support device of the crane according to the present invention.

Illustration of the drawings:

1. a base plate; 2. a standard section frame; 3. rotating the tower; 4. a balancing weight; 5. an auxiliary arm; 6. a sub-arm front support; 7. a balancing tower; 8. a first balance steel pipe; 9. a hook; 10. a main arm; 51. a weight lever; 52. fixing the rod; 53. a slide chamber; 54. a first wand; 61. a second balance steel pipe; 62. a hydraulic cylinder; 63. an arm lever; 64. a limiting rod; 65. a second wand.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides an embodiment: the utility model provides a sub-boom fore-stock device of hoist, comprising a base plate 1, a plurality of standard festival frame 2 that are located same plumb line of fixedly connected with directly over the

bottom plate

1, 1 one end fixedly connected with of bottom plate rotates tower 3 is kept away from to a plurality of standard festival frame 2, rotate 3 upper surface fixedly connected with main arm 10 of tower and sub-boom 5, sub-boom 5 includes dead lever 52, dead lever 52 with rotate 3 upper surface fixedly connected with of tower, dead lever 52 keeps away from and rotates 3 one end of tower and has seted up smooth chamber 53, sliding connection has first extension bar 54 in

smooth chamber

53, 3 one end fixedly connected with counterweight rod 51 of rotation tower is kept away from to first extension bar 54, counterweight rod 51 keeps away from dead lever 52 one end fixedly connected with balancing weight 4, sub-boom 5 top is.

Rotate 3 tops of tower fixedly connected with

balance tower

7, 7 apex positions of balance tower and the first balance steel pipe 8 of fixedly connected with, first balance steel pipe 8 is kept away from and is rotated 3 one end of tower and main arm 10 and keep away from rotation 3 one end top fixed connection of tower.

The upper surface of the counterweight rod 51 is rotatably connected with a limiting rod 64, one end, far away from the counterweight rod 51, of the limiting rod 64 is fixedly connected with a second extension rod 65, the tower tip position of the balance tower 7 is rotatably connected with a second balance steel pipe 61, and one end port, far away from the balance tower 7, of the second balance steel pipe 61 is connected with the second extension rod 65 in a sliding mode.

The sub-arm front support 6 comprises an arm rod 63, one end of the arm rod 63 is rotatably connected with the side wall of the fixing rod 52, one end of the arm rod 63, far away from the fixing rod 52, is rotatably connected with the side wall of the second balance steel pipe 61, a hydraulic cylinder 62 is rotatably connected between the second balance steel pipe 61 and the arm rod 63, and the length of the sub-arm 5 can be extended through the hydraulic cylinder 62, so that the arm of force is increased. A hook 9 is connected below the main arm 10 in a sliding manner. The weight rod 51, the fixing rod 52, the first extension rod 54, the limiting rod 64, the second extension rod 65, the second balance steel pipe 61 and the arm rod 63 are all made of manganese steel materials, and the manganese steel materials are high in strength.

The working principle is as follows: the device is arranged on the ground, when the weight of a cargo lifted by a tower crane is greater than the current lifting limit value, the hydraulic cylinder 62 is started, the hydraulic cylinder 62 pushes the front bracket 6 of the auxiliary arm, the counter-acting force of the front bracket 6 of the auxiliary arm and the second balance steel pipe 61 are enabled, the second balance steel pipe 61 pushes the balance weight rod 51 to move towards the side far away from the rotating tower 3, the length of the auxiliary arm 5 is increased, and the lifting limit of the main arm 10 is increased.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A fore-stock device of a fly jib of a crane, comprising a base plate (1), characterized in that: a plurality of standard knot frames (2) positioned on the same plumb line are fixedly connected right above the bottom plate (1), one end of each standard knot frame (2) far away from the bottom plate (1) is fixedly connected with a rotating tower (3), the upper surface of the rotating tower (3) is fixedly connected with a main arm (10) and an auxiliary arm (5), the auxiliary arm (5) comprises a fixed rod (52), the fixed rod (52) is fixedly connected with the upper surface of the rotating tower (3), one end of the fixed rod (52) far away from the rotating tower (3) is provided with a sliding cavity (53), a first extension rod (54) is connected in the sliding cavity (53) in a sliding manner, one end, far away from the rotating tower (3), of the first extension rod (54) is fixedly connected with a balance weight rod (51), one end, far away from the fixed rod (52), of the counterweight rod (51) is fixedly connected with a counterweight block (4), and an auxiliary arm front support (6) is arranged above the auxiliary arm (5).

2. The fore-bracket device of the fly jib of a crane according to claim 1, wherein: rotate tower (3) top fixedly connected with balance tower (7), balance tower (7) tip position and the first balance steel pipe of fixedly connected with (8), first balance steel pipe (8) are kept away from and are rotated tower (3) one end and main arm (10) and keep away from and rotate tower (3) one end top fixed connection.

3. The fore-bracket device of the fly jib of a crane according to claim 2, wherein: the utility model discloses a balance tower, including counterweight rod (51), limiting rod (64), counterweight rod (51) one end fixedly connected with second extension rod (65) are kept away from in limiting rod (64), balance tower (7) tower point position rotates and is connected with second balance steel pipe (61), balance tower (7) one end port and second extension rod (65) sliding connection are kept away from in second balance steel pipe (61).

4. The fore-bracket device of the fly jib of a crane according to claim 1, wherein: the auxiliary arm front support (6) comprises an arm rod (63), one end of the arm rod (63) is rotatably connected with the side wall of the fixing rod (52), one end, far away from the fixing rod (52), of the arm rod (63) is rotatably connected with the side wall of the second balance steel pipe (61), and a hydraulic cylinder (62) is rotatably connected between the second balance steel pipe (61) and the arm rod (63).

5. The fore-bracket device of the fly jib of a crane according to claim 1, wherein: a lifting hook (9) is connected below the main arm (10) in a sliding manner.

6. The fore-bracket device of the fly jib of a crane according to claim 1, wherein: the weight rod (51), the fixing rod (52), the first extension rod (54), the limiting rod (64), the second extension rod (65), the second balance steel pipe (61) and the arm rod (63) are all made of manganese steel materials.