阅读说明：本技术 一种球墨铸铁卷筒 (Nodular cast iron winding drum ) 是由 白广明 刘佳慧 孙景俊 于 2021-08-18 设计创作，主要内容包括：本发明涉及起重设备设备技术领域,且公开了一种球墨铸铁卷筒,包括内筒和外筒,所述内筒和外筒同轴设置,所述外筒的表面嵌有承载块,所述承载块通过液压缸与内筒连接。该球墨铸铁卷筒,在配备超大型起重机使用时,由于采取了外筒和内筒共同分担载荷,更利于卷筒直径的大型化,并且,在多层缠绕时,由于钢丝绳被两个夹紧柱夹紧固定,减少了钢丝绳的横向移动,进而减少钢丝绳相互之间的摩擦,减少摩擦损耗,提高钢丝绳的使用寿命,还有,在钢丝绳无载荷时,由于钢丝绳的侧面摩擦力,大幅度降低了钢丝绳松动的概率,进一步地,由于夹紧柱顺序释放钢丝绳,钢丝绳的摩擦力会积聚,进一步降低了底层钢丝绳松动的几率。(The invention relates to the technical field of hoisting equipment and discloses a nodular cast iron winding drum which comprises an inner drum and an outer drum, wherein the inner drum and the outer drum are coaxially arranged, a bearing block is embedded in the surface of the outer drum, and the bearing block is connected with the inner drum through a hydraulic cylinder. When the nodular cast iron winding drum is used with an ultra-large crane, the outer drum and the inner drum share the load together, the large-scale of the diameter of the winding drum is facilitated, in addition, when the multilayer winding is carried out, the steel wire rope is clamped and fixed by the two clamping columns, the transverse movement of the steel wire rope is reduced, the friction between the steel wire ropes is further reduced, the friction loss is reduced, the service life of the steel wire rope is prolonged, in addition, when the steel wire rope has no load, the probability of looseness of the steel wire rope is greatly reduced due to the side friction of the steel wire rope, further, the friction of the steel wire rope can be accumulated due to the sequential release of the clamping columns, and the probability of looseness of the steel wire rope at the bottom layer is further reduced.)

1. The utility model provides a nodular cast iron reel, includes inner tube (1) and urceolus (2), its characterized in that: the inner cylinder (1) and the outer cylinder (2) are coaxially arranged, the surface of the outer cylinder (2) is embedded with a bearing block (4), the bearing block (4) is connected with the inner cylinder (1) through a hydraulic cylinder (7), the hydraulic cylinder (7) penetrates through the outer cylinder (2), the hydraulic cylinder (7) and the bearing block (4) are both movably connected with the outer cylinder (2), the surface of the outer cylinder (2) is also provided with a convex part (3) which is flush with the lowest point of the upper surface of the bearing block (4), clamping columns (5) are arranged on two sides of the bearing block (4), the clamping columns (5) are connected with a transmission piece (6), the transmission piece (6) is connected with a telescopic piece (9), the telescopic piece (9) transmits the pressure of the hydraulic cylinder (7) to the transmission piece (6) and drives the transmission piece (6) to move, the bottom of the hydraulic cylinder (7) is fixedly connected with a bearing base (8).

2. A ductile iron mandrel according to claim 1, wherein: the transmission part (6) is a connecting rod, the transmission part (6) is hinged to the outer barrel (2), the hydraulic cylinder (7) is movably connected with the transmission parts (6) on two sides through the telescopic part (9), and the hydraulic cylinder (7) is extruded to drive the telescopic part (9) to extend when the bearing block (4) is pressed.

3. A ductile iron mandrel according to claim 1, wherein: the convex parts (3) and the bearing blocks (4) are arranged in a staggered mode along the axial direction and the circumferential direction.

4. A ductile iron mandrel according to claim 1, wherein: the clamping column (5) comprises a clamping column (53), the clamping column (53) is arranged on two sides of the bearing block (4) and movably connected with the upper surface of the bearing block (4), a control cavity (51) is fixedly arranged on the clamping column (53), and two sets of assembling plates (52) are fixedly arranged on the control cavity (51).

5. A ductile iron mandrel according to claim 1, wherein: the lowest point of the lowest position of the upper surface of the bearing block (4) is lower than the upper end surface of the bulge part (3), and the bulge part (3) is an elastic body.

6. A ductile iron mandrel according to claim 1, wherein: the transmission part (6) is fixedly connected with the clamping column (5), an inclined plane (11) is arranged at the bottom of the transmission part (6), the telescopic part (9) is arranged on one side of the transmission part (6), and an elastic part (12) is arranged between the transmission part (6) and the outer barrel (2).

7. A ductile iron mandrel according to claim 6, wherein: the hydraulic cylinder (7) which is contacted at the back is communicated with the front telescopic piece (9).

Technical Field

The invention relates to the technical field of hoisting equipment, in particular to a nodular cast iron winding drum.

Background

The tensile strength of nodular cast iron far exceeds that of grey cast iron and is equivalent to that of steel. Therefore, for parts bearing static load, the nodular cast iron saves materials compared with cast steel, and is lighter in weight, and meanwhile, the nodular cast iron has better crack resistance, so that the nodular cast iron is frequently used for manufacturing the winding drum in the hoisting field.

The winding drum is one of the key parts of large-scale hoisting equipment, and the quality of the winding drum has a crucial influence on the safe operation of the hoisting equipment because a load-bearing steel wire rope is directly wound on the winding drum and the winding drum directly bears the hoisting load. Along with the development trend of modern engineering towards large-scale, large-scale or ultra-large hoisting equipment in the engineering machinery industry is more and more widely applied, the hoisting weight and the hoisting lift are both greatly increased, which means that thicker steel wires are needed, and correspondingly, in order to reduce the bending of the steel wire rope, a reel with a larger diameter needs to be adapted.

Further, generally speaking, the steel wire is wound on the winding drum through single layer or multiple layers, when the single layer is wound on the large lift, the length requirement on the winding drum is greatly increased, the equipment cost is improved, the multiple layers are wound, the bottom layer steel wire rope is fixed through the rope grooves, the upper layer steel wire rope is fixed through the gaps between the bottom layer steel wire ropes, the friction between the steel wire ropes is further reduced, the service life of the steel wire ropes is prolonged, however, the bottom layer steel wire ropes still slide transversely when the upper layer steel wire ropes extrude the bottom layer steel wire ropes, the friction force still exists between the steel wire ropes and the winding drum and between the two layers of steel wire ropes, and the service life of the steel wire ropes is prolonged.

Furthermore, when the steel wire rope is wound on the winding drum, a certain tension is required to be maintained so as to maintain the minimum friction force of the steel wire rope, so that the steel wire rope is fixed, otherwise, when the tension of the steel wire rope is too small, the steel wire rope is loosened, so that the upper steel wire rope and the lower steel wire rope are staggered together, the friction between the steel wire ropes is greatly increased when the steel wire rope is continuously used, and the service life of the steel wire rope is shortened.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the technical scheme of the nodular cast iron winding drum, which improves the bearing upper limit by sharing load in a layered mode, limits the transverse movement of the steel wire rope and the looseness of the steel wire rope by clamping the steel wire rope, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a nodular cast iron reel, includes inner tube and urceolus, the coaxial setting of inner tube and urceolus, the carrier block has been inlayed on the surface of urceolus, the carrier block passes through the pneumatic cylinder and is connected with the inner tube, the pneumatic cylinder runs through the urceolus, pneumatic cylinder and carrier block all with urceolus swing joint, the surface of urceolus still is equipped with the bellying that flushes with carrier block upper surface minimum, the both sides of carrier block all are equipped with and press from both sides tight post, press from both sides tight post connection and have the driving medium, the driving medium is connected with the extensible member, the extensible member transmits the pressure of pneumatic cylinder to the driving medium on and drive the driving medium and remove, the bottom fixedly connected with of pneumatic cylinder bears the base.

Preferably, the transmission part is a connecting rod, the transmission part is hinged to the outer barrel, the hydraulic cylinder is movably connected with the transmission parts on the two sides through the telescopic part, and the hydraulic cylinder is extruded to drive the telescopic part to extend when the bearing block is pressed.

Preferably, the lug bosses and the bearing blocks are staggered in the axial direction and the circumferential direction.

Preferably, the clamping column comprises a tight supporting column, the tight supporting column is arranged on two sides of the bearing block and movably connected with the upper surface of the bearing block, a control cavity is fixedly arranged on the tight supporting column, and two groups of assembling plates are fixedly arranged on the control cavity.

Preferably, the lowest point of the lowest position of the upper surface of the bearing block is lower than the upper end surface of the boss, and the boss is an elastic body.

Preferably, the transmission member is fixedly connected with the clamping column, an inclined plane is arranged at the bottom of the transmission member, the telescopic member is arranged on one side of the transmission member, and an elastic member is arranged between the transmission member and the outer barrel.

Preferably, the hydraulic cylinder which is contacted at the rear is in communication with the previous telescopic element.

The invention has the following beneficial effects:

1. when the nodular cast iron winding drum is used for an ultra-large crane, the outer drum and the inner drum share the load, and particularly, the inner drum with a smaller diameter bears the main load, so that the requirement on the material of the outer drum is reduced, the enlargement of the diameter of the winding drum is facilitated, the requirement on the material of the outer drum is reduced, and the manufacturing cost is reduced.

2. This nodular cast iron reel, when the multilayer winding, because wire rope is pressed from both sides tight by two tight post clamps and is fixed, and the load is big more, presss from both sides tight more, on the one hand, has reduced wire rope's lateral shifting, and then reduces wire rope friction each other, reduces the friction loss, improves wire rope's life.

3. When the steel wire rope is unloaded, the clamping columns increase the side friction force of the steel wire rope, so that the probability of loosening of the steel wire rope is greatly reduced, and secondly, the clamping columns release the steel wire rope in sequence, so that the friction force of the steel wire rope can be accumulated, and the probability of loosening of the steel wire rope at the bottom layer is further reduced.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic partial structure diagram according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of the outer tub of the present invention;

FIG. 4 is a schematic structural diagram of a clamping column according to a first embodiment of the present invention;

fig. 5 is a schematic view of a transmission structure of a clamping column according to a second embodiment of the present invention.

In the figure: 1. an inner barrel; 2. an outer cylinder; 3. a boss portion; 4. a bearing block; 5. clamping the column; 51. a control chamber; 52. assembling a plate; 53. tightly abutting against the column; 6. a transmission member; 7. a hydraulic cylinder; 8. a load bearing base; 9. a telescoping member; 10. folding the line segment; 11. a bevel; 12. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 and 2, a nodular cast iron reel comprises an inner barrel 1 and an outer barrel 2, the inner barrel 1 and the outer barrel 2 are coaxially arranged, two ends of the inner barrel 1 are respectively connected with a speed reducer and a shaft bracket, the inner barrel 1 and the outer barrel 2 are fixedly connected to ensure synchronous rotation, the inner barrel 1 is made of nodular cast iron, a bearing block 4 is embedded on the surface of the outer barrel 2, the bearing block 4 is connected with the inner barrel 1 through a hydraulic cylinder 7, the upper surface of the bearing block 4 is provided with a restraining groove for placing a steel wire rope, the hydraulic cylinder 7 penetrates through the outer barrel 2, the hydraulic cylinder 7 and the bearing block 4 are both movably connected with the outer barrel 2, the surface of the outer barrel 2 is also provided with a bulge 3 which is flush with the lowest point of the upper surface of the bearing block 4, the bulge 3 and the bearing block 4 are connected end to form a complete circle, two sides of the bearing block 4 are provided with clamping columns 5, the clamping columns 5 are movably connected with the outer barrel 2 through a transmission piece 6, and the transmission piece 6 is hinged with the outer barrel 2, the outer cylinder 2 is axially rotated, the hydraulic cylinder 7 is movably connected with the transmission parts 6 on two sides through the telescopic parts 9, the hydraulic cylinder 7 is extruded to drive the telescopic parts 9 to extend when the bearing block 4 is pressed, the transmission parts 6 are provided with a reset structure and are always in an open state, the clamping columns 5 on two sides clamp the steel wire rope by the rotation of the hydraulic cylinder 7, the movement of the steel wire rope is limited, the bottom of the hydraulic cylinder 7 is fixedly connected with a bearing base 8, the bearing base 8 uniformly disperses the pressure received by the hydraulic cylinder 7 on the side wall of the inner cylinder 1, the bearing block 4 and the bearing base 8 are both made of nodular cast iron, the lifted load is jointly borne by the inner cylinder 1 and the outer cylinder 2, the load borne by the outer cylinder 2 with a large diameter is reduced, the material requirement is reduced, the surface of the outer cylinder 2 is reserved with a broken line section 10, the coil change when the steel wire rope is wound is ensured, and the winding rule is uniform in stress.

Referring to fig. 3, the protrusions 3 and the bearing blocks 4 are arranged in a staggered manner along the axial direction and the circumferential direction, that is, the protrusions 3 are all around the bearing blocks 4, and the bearing blocks 4 are all around the protrusions 3, so that the load is distributed more uniformly on the side wall of the outer cylinder 2, and the influence on the two steel wire ropes is reduced.

Referring to fig. 4, the clamping column 5 includes a tightening column 53, the tightening column 53 is disposed on two sides of the bearing block 4 and movably connected to the upper surface of the bearing block 4, the driving member 6 can push the tightening column 53 to move when moving, the driving member 6 is hinged to the tightening column 53, the tightening column 53 is fixedly provided with a control cavity 51, the control cavity 51 is fixedly provided with two sets of assembling plates 52, the assembling plates 52 are always horizontally moved under the action of the tightening column 53, in addition, the control cavity 51 and the assembling plates 52 of different sizes are selected according to the different diameters of the steel wire ropes, the steel wire ropes are optimally clamped, the peripheries of the assembling plates 52 are wrapped with elastic friction sleeves, and the precision requirement is reduced.

The lowest point of the lowest position of the upper surface of the bearing block 4 is lower than the upper end surface of the boss 3, the boss 3 is an elastic body, the acting force of the load on the outer barrel 2 and the boss 3 is reasonably distributed by utilizing the elastic force of the elastic body, and the bearing block 4 moves in place every time no matter how large the load is, so that the reliability is ensured.

Example two

Referring to fig. 5, the difference from the first embodiment is that the driving member 6 is fixedly connected to the clamping column 5, the bottom of the driving member 6 is provided with an inclined surface 11, the extensible member 9 is disposed on one side of the driving member 6, the extensible member 9 is communicated with the hydraulic cylinder 7 through a pipeline, and the elastic member 12 is disposed between the driving member 6 and the outer cylinder 2, so that the clamping column 5 is located at the highest position when not stressed, the steel wire rope is clamped from top to bottom when stressed, the slope of the inclined surface 11 is matched with the change of the diameter of the steel wire rope, and compared with the first embodiment, the clamping column 5 does not need to be replaced according to the change of the diameter of the steel wire rope, and the use is relatively convenient.

The rear contacted hydraulic cylinder 7 is communicated with the front telescopic piece 9, when the front telescopic piece is loosened, the front bearing block 4 is separated from the steel wire rope, the rear clamping column 5 is automatically loosened, the steel wire rope is convenient to release, and meanwhile, the steel wire rope is prevented from being loosened naturally, so that the lower ring of the steel wire rope is disordered.

The working principle and the working process of the invention are as follows:

example one

When rolling up wire rope, wire rope compresses tightly carrier block 4, and the effort transmits pneumatic cylinder 7, transmits the driving medium 6 of both sides then, makes two press from both sides tight post 5 and press from both sides tight wire rope, increases the frictional force of wire rope side, simultaneously, carries on spacingly to wire rope, avoids wire rope to remove.

Example two

The pressure of hydraulic cylinder 7 is transmitted to in the extensible member 9, transmits driving medium 6 then and drives driving medium 6 and presss from both sides tight post 5 and remove, and because the diameter is less, and is far away from pressing from both sides tight post 5, the distance that driving medium 6 removed is far away, and the height that descends is more for the contact point of pressing from both sides tight post 5 and wire rope always is a little higher than the axis, reduces the interference to upper wire rope.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.