阅读说明：本技术 一种履带起重机可调桅杆变幅机构 (Adjustable mast luffing mechanism of crawler crane ) 是由 杨慧杰 肖华 薛振 刘威 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种履带起重机可调桅杆变幅机构,包括配重基座和辅助油缸,所述配重基座顶部通过螺栓固定有主卷扬筒,所述主卷扬筒一侧与所述配重基座通过螺栓固定有副卷扬筒,所述副卷扬筒远离所述主卷扬筒一侧与所述配重基座焊接有固定座一,所述固定座一远离所述副卷扬筒一侧与所述配重基座焊接有固定座二,所述固定座二内转动连接有所述辅助油缸。有益效果在于：本发明通过新增固定座二、活动连接块以及辅助油缸,可在桅杆起重作业时,起到保护的作用,同时在桅杆的变幅机构发生故障时,可作为第二变幅机构进行起重作业,保障了装置的正常使用。(The invention discloses an adjustable mast luffing mechanism of a crawler crane, which comprises a counterweight base and an auxiliary oil cylinder, wherein a main hoisting drum is fixed at the top of the counterweight base through a bolt, an auxiliary hoisting drum is fixed on one side of the main hoisting drum and the counterweight base through a bolt, a first fixing seat is welded on one side of the auxiliary hoisting drum, which is far away from the main hoisting drum, and the counterweight base, a second fixing seat is welded on one side of the first fixing seat, which is far away from the auxiliary hoisting drum, and the auxiliary oil cylinder is rotatably connected in the second fixing seat. Has the advantages that: the mast lifting device has the advantages that the second fixed seat, the movable connecting block and the auxiliary oil cylinder are additionally arranged, so that the mast lifting device can play a role in protection during mast lifting operation, and can be used as a second luffing mechanism for lifting operation when the luffing mechanism of the mast breaks down, so that the normal use of the mast lifting device is guaranteed.)

1. The utility model provides a crawler crane adjustable mast luffing mechanism which characterized in that: including counter weight base (1) and auxiliary cylinder (14), there is main hoist section of thick bamboo (2) counter weight base (1) top through the bolt fastening, main hoist section of thick bamboo (2) one side with counter weight base (1) has vice hoist section of thick bamboo (10) through the bolt fastening, keep away from vice hoist section of thick bamboo (10) main hoist section of thick bamboo (2) one side with counter weight base (1) welding has fixing base (4), keep away from fixing base (4) vice hoist section of thick bamboo (10) one side with counter weight base (1) welding has fixing base two (16), fixing base two (16) internal rotation is connected with auxiliary cylinder (14).

2. A crawler crane adjustable mast luffing mechanism according to claim 1, wherein: the side wall of the main hoisting drum (2) is rotatably connected with a main hoisting machine (3) through a shaft, the main hoisting machine (3) is connected with the counterweight base (1) through a bolt, and the side wall of the auxiliary hoisting drum (10) is rotatably connected with an auxiliary hoisting machine (9) through a shaft.

3. A crawler crane adjustable mast luffing mechanism according to claim 2, wherein: the main hoisting drum (2) is connected with a windlass rope (6) in a winding mode, and the auxiliary hoisting drum (10) is connected with a hoisting rope (11) in a winding mode.

4. A crawler crane adjustable mast luffing mechanism according to claim 3, wherein: the fixing seat I (4) is connected with a rotating shaft (8) in an inserting mode, the rotating shaft (8) is connected with a mast (5) in a rotating mode, a movable connecting block (15) is welded on one side wall of the mast (5), and the movable connecting block (15) is connected with the auxiliary oil cylinder (14) in a rotating mode.

5. An adjustable mast luffing mechanism for a crawler crane according to claim 4, wherein: an arm head assembly (7) is fixed at one end of the mast (5) through a bolt, a pulley block (12) is connected in the arm head assembly (7) in a rotating mode, and the hoisting rope (11) is connected with the pulley block (12) in a winding mode.

6. An adjustable mast luffing mechanism for a crawler crane according to claim 5, wherein: the top of the arm head assembly (7) is welded with a fixing pile (17), and the cable wind rope (6) is connected with the fixing pile (17) in a winding mode.

Technical Field

The invention relates to the technical field of crawler cranes, in particular to an adjustable mast luffing mechanism of a crawler crane.

Background

The crawler crane is a mobile crane which is provided with a hoisting operation part on a crawler chassis and runs by a crawler device. The crawler crane is a mobile boom crane provided with a crawler running device. The device consists of a movable arm, a rotary table and other metal structures, a lifting mechanism, a rotating mechanism, an amplitude-changing mechanism, an operating mechanism and the like. The lifting and amplitude-changing mechanism adopts a winding drum to wind a steel rope, and the object taking device is lifted and the movable arm is subjected to pitching amplitude-changing through a complex pulley block. The rotating mechanism adopts a rotating disc type supporting device, and is suitable for lifting, loading and unloading operations of industry and forestry.

The luffing mechanism of the mast in the existing crawler-type mast crane mostly realizes luffing by winding and unwinding a guy rope through a winch, lacks auxiliary appliances, and not only leads to the incapability of working of the crane when the winch and the guy rope break down, but also increases potential safety hazards.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, the adjustable mast luffing mechanism of the crawler crane is provided, and the problem that the luffing mechanism of the mast in the existing crawler mast crane mostly realizes luffing by winding and unwinding a guy rope through a winch, lacks of auxiliary appliances, and not only can the crane be prevented from working when the winch and the guy rope break down, but also potential safety hazards are increased is solved.

(II) technical scheme

The invention is realized by the following technical scheme: the invention provides an adjustable mast luffing mechanism of a crawler crane, which comprises a counterweight base and an auxiliary oil cylinder, wherein a main hoisting drum is fixed at the top of the counterweight base through a bolt, an auxiliary hoisting drum is fixed on one side of the main hoisting drum and the counterweight base through a bolt, a first fixing seat is welded on one side of the auxiliary hoisting drum, which is far away from the main hoisting drum, and the counterweight base, a second fixing seat is welded on one side of the first fixing seat, which is far away from the auxiliary hoisting drum, and the auxiliary oil cylinder is rotatably connected in the second fixing seat.

By adopting the technical scheme, the oil supply system of the amplitude-variable oil cylinder is controlled by the control room of the crawler crane, and the auxiliary oil cylinder follows the mast to change amplitude together.

Furthermore, a main winch is rotatably connected to one side wall of the main winch barrel through a shaft, the main winch is connected with the counterweight base through a bolt, and an auxiliary winch is rotatably connected to one side wall of the auxiliary winch barrel through a shaft.

Furthermore, a guy rope is connected to the main winding drum in a winding manner, and a hoisting rope is connected to the auxiliary winding drum in a winding manner.

By adopting the technical scheme, the guy rope is an important stabilizing system in mast lifting and various high-rise structures, plays a role in stabilizing the mast and bearing partial load in mast lifting, and has a direct relation with the safe work of the mast crane.

Furthermore, a rotating shaft is inserted in the first fixing seat, a mast is rotatably connected to the rotating shaft, a movable connecting block is welded to the side wall of the mast, and the movable connecting block is rotatably connected with the auxiliary oil cylinder.

Furthermore, an arm head assembly is fixed at one end of the mast through a bolt, a pulley block is connected in the arm head assembly in a rotating mode, and the hoisting rope is connected with the pulley block in a winding mode.

Furthermore, a fixing pile is welded at the top of the arm head assembly, and the cable rope is connected with the fixing pile in a winding mode.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

in order to solve the problems that most of mast luffing mechanisms in the existing crawler-type mast crane realize luffing by winding and unwinding a cable rope through a winch, auxiliary appliances are lacked, the crane cannot work and potential safety hazards are increased when the winch and the cable rope break down, a second fixed seat, a movable connecting block and an auxiliary oil cylinder are additionally arranged, the mast luffing mechanism can play a role in protection during mast hoisting operation, and can be used as a second luffing mechanism for hoisting operation when the luffing mechanism of the mast breaks down, so that the normal use of the device is guaranteed.

Drawings

FIG. 1 is a schematic structural view of an adjustable mast luffing mechanism of a crawler crane according to the present invention;

FIG. 2 is a top view of a jib head assembly in an adjustable mast luffing mechanism of a crawler crane according to the present invention;

FIG. 3 is a schematic view of a connection relationship between a second fixing seat and an auxiliary oil cylinder in the adjustable mast luffing mechanism of the crawler crane.

The reference numerals are explained below:

1. a counterweight base; 2. a main hoisting drum; 3. a main hoist; 4. a first fixed seat; 5. a mast; 6. a guy rope; 7. an arm head assembly; 8. a rotating shaft; 9. an auxiliary hoist; 10. an auxiliary winding drum; 11. a hoisting rope; 12. a pulley block; 13. installing a bolt; 14. an auxiliary oil cylinder; 15. a movable connecting block; 16. a second fixed seat; 17. and (6) fixing the pile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, the adjustable mast luffing mechanism of the crawler crane in this embodiment includes a counterweight base 1 and an auxiliary cylinder 14, a main winding drum 2 is fixed to the top of the counterweight base 1 through a bolt, an auxiliary winding drum 10 is fixed to one side of the main winding drum 2 and the counterweight base 1 through a bolt, a first fixing seat 4 is welded to one side of the auxiliary winding drum 10, which is far away from the main winding drum 2, of the counterweight base 1, a second fixing seat 16 is welded to one side of the first fixing seat 4, which is far away from the auxiliary winding drum 10, of the counterweight base 1, the auxiliary cylinder 14 is rotatably connected to the second fixing seat 16, an oil supply system of the luffing cylinder is controlled by a control room of the crawler crane, and.

One side wall of the main hoisting drum 2 is rotatably connected with a main hoisting machine 3 through a shaft piece, the main hoisting machine 3 is connected with the counterweight base 1 through a bolt, and one side wall of the auxiliary hoisting drum 10 is rotatably connected with an auxiliary hoisting machine 9 through a shaft piece.

The main winding drum 2 is connected with a guy rope 6 in a winding mode, the auxiliary winding drum 10 is connected with a hoisting rope 11 in a winding mode, the guy rope 6 is in the hoisting and various high-rise structures of the mast 5, the guy rope 6 is an important stabilizing system and plays a role in stabilizing the mast 5 and bearing part of load in the hoisting and hanging process of the mast 5, and the existence of the guy rope is directly related to the safe work of the mast 5 type crane.

A rotating shaft 8 is inserted in the first fixing seat 4, a mast 5 is rotatably connected to the rotating shaft 8, a movable connecting block 15 is welded to one side wall of the mast 5, and the movable connecting block 15 is rotatably connected with an auxiliary oil cylinder 14.

One end of the mast 5 is fixed with an arm head component 7 through a bolt, the arm head component 7 is connected with a pulley block 12 in a rotating way, and a hoisting rope 11 is connected with the pulley block 12 in a winding way.

The top of the arm head assembly 7 is welded with a fixing pile 17, and the guy cable 6 is connected with the fixing pile 17 in a winding manner.

The specific implementation process of this embodiment is as follows: firstly, a counterweight base 1 is fixed on a rotary structure of a crawler bed through a mounting bolt 13, then one end of a guy rope 6 is connected on a fixed pile 17, the other end of the guy rope is connected on a main hoisting drum 2 in a winding way, one end of a hoisting rope 11 is connected with a lifting hook in a winding way by bypassing a pulley block 12, the other end of the hoisting rope is connected on an auxiliary hoisting drum 10 in a winding way, finally, the main hoisting machine 3 and the auxiliary hoisting machine 9 are connected on a driving mechanism of a carrier, the installation can be completed, when the mast 5 hoists a heavy object, the main hoisting machine 3 drives the main hoisting drum 2 to roll up the guy rope 6, the angle of the mast 5 is adjusted by pulling the mast 5 to rotate along a fixed seat 4 through the fixed pile 17 of a top rod of the mast 5, so as to achieve the purpose of lifting the heavy object, the auxiliary hoisting machine 9 drives the auxiliary hoisting drum 10 to roll up the guy rope 11, the position, the auxiliary protection support structure not only provides variable amplitude power for the mast 5, saves energy consumption, but also plays a role in protection, and can be used as a second variable amplitude mechanism for hoisting operation when the variable amplitude mechanism of the mast 5 breaks down, thereby ensuring the normal use of the device.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.