阅读说明：本技术 一种带有伞状承载装置的车架结构 (Frame structure with umbrella-shaped bearing device ) 是由 丁美莲 周春辉 马奥林 王成 孟令琪 于 2021-08-19 设计创作，主要内容包括：本发明公开一种带有伞状承载装置的车架结构,属于履带起重机技术领域,包括车架主结构,车架主结构顶部以焊接或装配方式设置有伞状承载装置；同时,车架主结构左右两侧前后方向分别转动连有车架摆腿,车架摆腿与履带架上的方洞连接,车架摆腿的前端下面设置有连接部,连接部上内端和外端分别开设有车架摆腿固定销轴和限位销轴,方洞内下底面分别设置有与车架摆腿固定销轴和限位销轴配合使用的第一固定孔和第二固定孔。本发明提供的一种带有伞状承载装置的车架结构,能够使车架既能够适应大直径回转支承的高承载能力、履带底盘宽轨状态时的高起重性能需求,又能满足缩回至极致窄轨小尺寸时,履带底盘运输宽度不超限,车架又不与履带架干涉的需求。(The invention discloses a frame structure with an umbrella-shaped bearing device, belonging to the technical field of crawler cranes and comprising a frame main structure, wherein the umbrella-shaped bearing device is arranged at the top of the frame main structure in a welding or assembling mode; meanwhile, the front and back directions of the left side and the right side of the main frame structure are respectively and rotatably connected with frame swing legs, the frame swing legs are connected with a square hole in the crawler frame, a connecting part is arranged below the front end of each frame swing leg, a frame swing leg fixing pin shaft and a limiting pin shaft are respectively arranged at the inner end and the outer end of each connecting part, and a first fixing hole and a second fixing hole which are matched with the frame swing leg fixing pin shaft and the limiting pin shaft for use are respectively arranged in the inner bottom surface and the lower bottom surface of the square hole. The frame structure with the umbrella-shaped bearing device provided by the invention can meet the requirements of high bearing capacity of a large-diameter slewing bearing and high lifting performance of a crawler chassis in a wide rail state, and can also meet the requirements that the transportation width of the crawler chassis is not over-limit and the frame does not interfere with a crawler frame when the crawler chassis is retracted to a narrow rail and a small size.)

1. The utility model provides a frame structure with device is born to umbelliform which characterized in that: the crawler belt frame is characterized by comprising a frame main structure (9), wherein an umbrella-shaped bearing device is arranged on the frame main structure (9), the umbrella-shaped bearing device comprises an upper seat ring (12) and a lower seat ring (13) which are connected up and down, the diameter of the upper seat ring (12) is larger than that of the lower seat ring (13), the frame main structure (9) is connected with a square hole (5) in a crawler belt frame through a frame swing leg (1), a connecting part is arranged below the front end of the frame swing leg (1), a frame swing leg fixing pin shaft (2) and a limiting pin shaft (3) are respectively arranged at the inner end and the outer end of the connecting part, a first fixing hole (6) and a second fixing hole (7) which are matched with the frame swing leg fixing pin shaft (2) and the limiting pin shaft (3) are respectively arranged at the inner end and the outer end of the connecting part, a third fixing hole (5) matched with the frame swing leg fixing pin shaft (2) is respectively arranged at the front side and the back side of the crawler belt frame and the two sides of the square hole (5) A fixing hole (8).

2. A frame structure with umbrella-shaped carrying device according to claim 1, characterized in that: the upper seat ring (12) and the lower seat ring (13) are connected through a plurality of vertical plates (10) distributed along the circumferential direction, and the inner ring and the outer ring of the vertical plates (10) are fixed through an inner rib plate (11) and an outer rib plate (14) respectively.

3. A frame structure with umbrella-shaped carrying device according to claim 1, characterized in that: the upper seat ring (12) is connected with the lower seat ring (13) through a conical ring plate.

4. A frame structure with umbrella-shaped carrying device according to claim 1, characterized in that: the outer side of the upper surface of the frame swing leg (1) is provided with a backing plate (4).

5. A frame structure with umbrella-shaped carrier according to claim 2, characterized in that: the lower ends of the vertical plate (10), the inner rib plate (11) and the outer rib plate (14) are connected with the lower seat ring (13) and the upper seat ring (12) in a welding mode.

6. A frame structure with umbrella-shaped carrier according to claim 2, characterized in that: the lower ends of the vertical plate (10), the inner rib plate (11) and the outer rib plate (14) are connected with a bottom plate, the lower seat ring (13) is positioned below the bottom plate, and the bottom plate is detachably connected with the lower seat ring (13).

7. A frame structure with umbrella bearing device according to claim 6, characterized in that: the bottom plate and the lower seat ring (13) are both provided with threaded holes, and the bottom plate and the lower seat ring (13) are fixed through bolts.

Technical Field

The invention relates to a frame structure with an umbrella-shaped bearing device, and belongs to the technical field of crawler cranes.

Background

The frame is an important stressed part of the crawler crane, and is used for bearing the upper load transmitted through the slewing bearing and transmitting the load to the crawler frame. The frame is provided with evenly distributed threaded holes which are connected with the slewing bearing. With the increasingly strict requirements on transportation regulations and use environments, in order to adapt to the limits of work sites and regulations, the frame structure of the crawler crane is required to meet the use requirement of higher bearing capacity by a more compact structure.

In order to meet the requirements of hoisting performance, the stability of the whole machine and proper ground pressure during hoisting operation, the crawler crane needs to have a correspondingly larger size at the position where the frame is connected with the slewing bearing; a larger track gauge is required between the two tracks; the track shoe also has enough width to disperse the pressure of the whole machine on the ground. For the telescopic crawler chassis, the total width of the retracted state is basically determined by the width of two crawler belts and the diameter of the slewing bearing, and for the conventional products of 50 tons or more, the external width during retraction can not be basically less than 3 m. The crawler crane equipment for operating in some special occasions does not have field assembly conditions, a roadway capable of running is particularly narrow, the external width of the chassis is required to be controlled below 3.0 meters, and the hoisting performance of a corresponding tonnage product is still required. The width of the track shoe is affected by the ground pressure and cannot be greatly reduced, which means that only the size of the middle part of the frame can be compressed.

In the prior art, the frame form in the chassis of the crawler crane mainly comprises the following two types: the first scheme is as follows: the frame is connected with the crawler frame through a pin shaft, and meanwhile, the frame and the crawler frame are both provided with extrusion blocks for balancing the stress of the chassis structure. The frame structure that round pin axle and track frame are connected can realize track frame and frame separation transportation, but can't change the gauge, can't carry out the operation in the limited place of width. Scheme II: the frame and the crawler frame are connected with the square hole through swing legs (or no swing legs). The frame and the crawler frame are connected with the square hole through the swing legs, the crawler frame and the frame can be separated for transportation, the track can be changed, and the transportation adaptability and the construction site adaptability are stronger. However, the problem of interference between a frame ring beam and a track frame is difficult to solve in the narrow-gauge state of the crawler chassis, and the width of a conventional product of 50 tons or more is difficult to control within 3 meters.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a frame structure with an umbrella-shaped bearing device, so that the frame can meet the requirements of high bearing capacity of a large-diameter slewing bearing and high hoisting performance of a crawler chassis in a wide rail state, and can meet the requirements that the transportation width of the crawler chassis is not over limited and the frame does not interfere with a crawler frame when the crawler chassis is retracted to a narrow rail and a small size.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a frame structure with an umbrella-shaped bearing device comprises a frame main structure, wherein the frame main structure is provided with the umbrella-shaped bearing device, the umbrella-shaped bearing device comprises an upper seat ring and a lower seat ring which are connected up and down, the diameter of the upper seat ring is larger than that of the lower seat ring, the left side and the right side of the main frame structure are respectively and rotatably connected with a frame swing leg in the front-back direction, the frame swing leg is connected with a square hole on the crawler frame, a connecting part is arranged below the front end of the frame swing leg, a frame swing leg fixing pin shaft and a limiting pin shaft are respectively arranged at the inner end and the outer end of the connecting part, the inner lower bottom surface of the square hole is respectively provided with a first fixing hole and a second fixing hole which are matched with the frame swing leg fixing pin shaft and the limiting pin shaft, third fixing holes matched with the frame swing leg fixing pin shafts for use are formed in the front side and the rear side of the two square holes in the web plate of the crawler frame respectively.

The upper seat ring and the lower seat ring are connected through a plurality of vertical plates distributed along the circumferential direction, and the inner ring and the outer ring of the vertical plates are fixed through an inner rib plate and an outer rib plate respectively.

The upper seat ring is connected with the lower seat ring through a conical ring plate.

And a base plate is arranged on the outer side of the upper surface of the swing leg of the frame.

The lower ends of the vertical plate, the inner rib plate and the outer rib plate are connected with the lower seat ring and the upper seat ring in a welding mode.

The lower ends of the vertical plate, the inner rib plate and the outer rib plate are connected with a bottom plate, the lower seat ring is positioned below the bottom plate, and the bottom plate is detachably connected with the lower seat ring.

The bottom plate with all be provided with the screw hole on the lower seat circle, the bottom plate with pass through the bolt fastening between the lower seat circle.

The invention has the beneficial effects that:

1. the umbrella-shaped bearing device comprises an upper seat ring and a lower seat ring which are arranged from top to bottom, the diameter of the upper seat ring is larger than that of the lower seat ring, the upper seat ring and the lower seat ring are connected through a plurality of vertical plates distributed along the circumferential direction, through transformation, the frame structure can take two kinds of slewing bearings into consideration, the frame with the umbrella-shaped bearing device can use a large-diameter slewing bearing, and the umbrella-shaped bearing device is removed to use a small-diameter slewing bearing.

2. The connecting portion are arranged below the front end of the frame swing leg, a frame swing leg fixing pin shaft and a limiting pin shaft are respectively arranged at the inner end and the outer end of the connecting portion, a first fixing hole and a second fixing hole which are matched with the frame swing leg fixing pin shaft and the limiting pin shaft are respectively arranged below the connection of the square holes, third fixing holes which are matched with the frame swing leg fixing pin shaft and used are respectively arranged on the web of the crawler frame and located in the front and the back of the two square holes, the swing leg is fixed in a narrow rail state conveniently, the bearing capacity and the rigidity and strength are maximized under the most compact structural size, and the width of the narrow rail state of the crawler chassis is not more than 3 m. For products below the 50 ton scale, the total width dimension may be more limited.

3. According to the actual use requirement, the umbrella-shaped bearing device can be welded on the frame structure, also can be made into an assembly structure, and is connected with the frame structure through a bolt to form a new frame structure.

Drawings

FIG. 1 is a schematic structural view of an umbrella-shaped bearing device on a main frame structure of a vehicle frame;

FIG. 2 is a schematic view of the construction of the umbrella carrier of the present invention;

FIG. 3 is a schematic structural view of a frame structure with an umbrella-shaped bearing device according to the present invention;

FIG. 4 is a schematic view of a hole structure above the track frame and a leg swing pin shaft fixing hole in the invention;

FIG. 5 is a schematic illustration of the left track frame extended and the right track frame retracted in accordance with the present invention;

FIG. 6 is a schematic view of the two side tracks of the present invention retracted to a narrow gauge.

The reference numbers in the figures are as follows: 1-swinging the frame; 2-a frame swing leg fixing pin shaft; 3-limiting pin shaft; 4-a backing plate; 5-square hole; 6-a first fixing hole; 7-a second fixing hole; 8-a third fixation hole; 9-a main frame structure; 10-standing a plate; 11-inner rib plate; 12-an upper race; 13-a lower race; 14-outer rib plate.

Detailed Description

The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.

As shown in fig. 3 to 6, the invention discloses a frame structure with an umbrella-shaped bearing device, which comprises a frame main structure 9, wherein the left side and the right side of the frame main structure 9 are respectively connected with frame swing legs 1 in a rotating manner in the front-back direction, so that in order to meet the requirement of larger track gauge change, the swing legs are lengthened and changed into single swing legs, thereby adapting to the limited space of a track frame when the swing legs are swung back and fixed on the track frame in a narrow-gauge walking state. The frame swing leg 1 is connected with a square hole 5 on the crawler frame, a connecting part is arranged below the front end of the frame swing leg 1, a frame swing leg fixing pin shaft 2 and a limiting pin shaft 3 are respectively arranged at the inner end and the outer end of the connecting part, a first fixing hole 6 and a second fixing hole 7 which are matched with the frame swing leg fixing pin shaft 2 and the limiting pin shaft 3 for use are respectively arranged at the inner bottom surface and the lower bottom surface of the square hole 5, and third fixing holes 8 which are matched with the frame swing leg fixing pin shaft 2 for use are respectively arranged on a web plate of the crawler frame and positioned at the front side and the rear side of the two square holes 5. The outer side of the upper surface of the frame swing leg 1 is provided with a backing plate 4, and the gap between the frame swing leg 1 and the track frame square hole 5 can be filled by adjusting the thickness of the backing plate 4.

The frame structure with the umbrella-shaped bearing device has the following use mode: when the crawler frame is in a working state, the frame swing legs 1 are parallel to the square holes 5 and are perpendicular to the crawler frame web, the frame swing leg fixing pin shafts 2 are connected with the first fixing holes 6 opposite to the crawler frame, and the limiting pin shafts 3 are connected with the second fixing holes 7 to realize limiting; and in a narrow gauge state, the frame swing legs 1 are perpendicular to the square holes 5 and parallel to the crawler frame web, and the frame swing leg fixing pin shaft 2 is connected with a third fixing hole 8 on the crawler frame to realize limiting.

According to the invention, on the basis of the frame structure of the traditional plug-in type crawler chassis, the umbrella-shaped bearing device is added, as shown in figures 1 and 2, the umbrella-shaped bearing device is outwards dispersed from the middle structure of the frame, the frame structure can be connected with the large-diameter slewing bearing, the structure is compact, and the crawler frame can be ensured not to interfere with the frame when being contracted to the extremely narrow-gauge state. The umbrella-shaped bearing device consists of an upper seat ring 12, a lower seat ring 13, a vertical plate 10, an inner rib plate 11 and an outer rib plate 14, and the upper seat ring 12 can be connected with the large-diameter slewing bearing by gradually diverging from bottom to top. The diameter of going up seat circle 12 is greater than the diameter of lower seat circle 13, goes up seat circle 12 and is connected through the riser 10 that a plurality of distributes along the border direction between the lower seat circle 13, and a circle riser 10 plays the effect of supporting upper seat circle 12, and the inner circle and the outer lane of a plurality of riser 10 are fixed through interior gusset 11 and outer gusset 14 respectively. The inner rib plate 11 and the outer rib plate 14 form a polygon, and the vertical plate 10 is connected with the lower seat ring 13 and the upper seat ring 12 to form a box-type structure, so that the strength and the rigidity are good. Meanwhile, the upper and lower seat ring connecting structures formed by the vertical plates 10, the inner rib plates 11 and the outer rib plates 14 can also be connected in a mode of adding or not adding rib plates to the conical ring plates with different quantities.

The umbrella-shaped bearing device can be in a welding type or an assembling type, the welding type is the structure shown in figure 2, and the lower ends of the vertical plate 10, the inner rib plate 11 and the outer rib plate 14 are in welding connection with the lower seat ring 13. If the seat ring 13 is reserved, the inner rib plates 11, the outer rib plates 14, the vertical plates 10 and the upper seat ring 12 are cut off, and the small-diameter slewing bearing can be adapted. In the assembly mode, a bottom plate can be additionally arranged below the vertical plate 10, the inner rib plate 11 and the outer rib plate 14, the lower seat ring 13 is positioned below the bottom plate, and the bottom plate is detachably connected with the lower seat ring 13. In particular to a bottom plate with a threaded hole which is connected with a lower seat ring 13 through a bolt. The upper seat ring 12, the vertical plate 10, the inner rib plate 11, the outer rib plate 14 and the bottom plate form an assembled umbrella-shaped bearing device, and the lower seat ring 13 can adapt to the small-diameter slewing bearing after the bottom plate is detached.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.