CN212769579U

CN212769579U - Hoist rope pressing device and hoist assembly

Info

Publication number: CN212769579U
Application number: CN202020719776.XU
Authority: CN
Inventors: 赵涤辉
Original assignee: Shanghai Zoomlion Piling Machinery Co Ltd
Current assignee: Shanghai Zoomlion Piling Machinery Co Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-03-23
Anticipated expiration: 2030-05-06

Abstract

The utility model provides a hoist rope pressing device, includes first support, second support, connects the rope pressing axle on first support and second support to and set up the epaxial rope pressing roller of pressing. The rope pressing roller comprises a middle section and first guide structures arranged at two ends of the middle section, each first guide structure is a rotating body rotating around the axis of the rope pressing roller, each first guide structure comprises an outer end far away from the middle section, an inner end connected with the middle section and a rotating surface located between the outer end and the inner end, and the outer diameter of each first guide structure from the outer end to the inner end is gradually reduced. The utility model discloses a hoist rope pressing device can alleviate "pile rope" or "rope skipping" phenomenon of wire rope when the second floor on the first layer of full reel effectively to can prolong wire rope's life. The utility model discloses still relate to a hoist assembly that has this hoist rope pressing device.

Description

Hoist rope pressing device and hoist assembly

Technical Field

The utility model belongs to the technical field of the engineering machine tool technique and specifically relates to a hoist rope pressing device and have hoist assembly of this hoist rope pressing device is related to.

Background

Within the piling engineering machinery industry there are many kinds of piling machinery used for hoisting or reciprocating hauling, such as rotary drilling rigs. Piling machinery is generally provided with a winch assembly, the winch assembly mainly comprises a frame, a winding drum, a steel wire rope, a winch rope pressing device, a driving device and the like, and the piling machinery is widely applied. Wire ropes are commonly used as a means of hoisting, hauling, tensioning and carrying. For example, the rotary drilling rig needs to continuously lift and lower the drill rod in the working process, so that the main winch needs to continuously take in and pay off the rope, and the steel wire rope for lifting the drill rod is correspondingly wound and released on the winding drum of the main winch. The hoisting rope pressing device plays a role in rope arrangement when the steel wire rope is wound on the winding drum, so that the steel wire rope can be orderly discharged along the rope grooves on the winding drum in the winding and releasing processes.

Because the single rope tension of the main winch in the piling machinery is very large, for medium-sized and large-sized piling machinery, the main winch is designed into a double-layer or multi-layer rope holding structure in many cases in consideration of the overall layout of the piling machinery.

As shown in fig. 1 and 2, in the actual operation of the hoisting assembly, when the steel wire rope 1 is wound around the drum 2 and then is stacked from the first layer to the second layer, the steel wire rope 1 is generally vertically stacked on the first layer, sometimes, the steel wire rope 1 in the next circle is directly stacked on the third layer (not shown), and the rope cannot be smoothly discharged, which is called "rope stacking". When the steel wire ropes are piled to a certain degree, the steel wire ropes jump from the second layer or the third layer, strong impact is generated on the steel wire ropes 1 at the bottom layer, and the service life of the steel wire ropes 1 is seriously influenced.

As shown in fig. 2, in order to solve the above problems, a general solution in the prior art is to add a guide boss 22 with a certain thickness on a side wall 21 of a drum, and when a second layer is formed on a steel wire rope 1, the steel wire rope 1 is pushed in an opposite direction by the guide boss 22, so that the second layer or a third layer cannot be stacked on the steel wire rope 1, thereby avoiding a "rope skipping" phenomenon. However, this solution also has the following disadvantages:

1. when the guide boss 22 pushes back the wire rope 1, there is resistance and sliding friction is generated. After working for a period of time, the guide boss 22 is worn and thinned, and the steel wire rope 1 cannot be pushed back smoothly, so that the phenomenon of rope skipping occurs again. The steel wire rope 1 is rapidly failed in the later use stage, and the whole service life is influenced.

2. After the steel wire rope 1 is used for a period, the diameter of the steel wire rope 1 is reduced due to abrasion and load, and the guide boss 22 cannot smoothly push back the steel wire rope 1. The steel wire rope 1 is rapidly failed due to rope skipping at the later stage of use, and the whole service life is influenced.

3. When the steel wire rope 1 climbs the second layer and is going to be wound back, the inclined surface 31 at the end part of the roller 3 of the hoisting rope pressing device generates a component force F for pressing the guide boss 22 on the steel wire rope 1_HThe wire 1 is prevented from being rewound and the abrasion of the guide bosses 22 is accelerated.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a rope pressing device for hoisting, which can effectively reduce the rope piling or rope skipping phenomenon when the steel wire rope winds the second layer on the first layer of the winding drum, and can prolong the service life of the steel wire rope.

The embodiment of the utility model provides a hoist rope pressing device includes first support, second support, connects the rope pressing shaft on first support and second support to and set up at the epaxial rope pressing roller of pressing. The rope pressing roller comprises a middle section and first guide structures arranged at two ends of the middle section, each first guide structure is a rotating body rotating around the axis of the rope pressing roller, each first guide structure comprises an outer end far away from the middle section, an inner end connected with the middle section and a rotating surface located between the outer end and the inner end, and the outer diameter of each first guide structure from the outer end to the inner end is gradually reduced.

Further, the axial section of the rotating surface is a straight line segment.

Furthermore, the included angle between the straight line segment and the axial lead of the rope pressing roller ranges from 10 degrees to 15 degrees.

Further, the length of the straight line segment is 35-45 mm.

Further, the axial section of the rotating surface is an inwards concave curve section.

Further, the curved line segment is a circular arc.

Further, the arc radius of the curve section is 120-130 mm.

Further, the device also comprises a connecting rod and an elastic component; two ends of the connecting rod are provided with supports for fixing on a rack of the winch assembly, the first support and the second support are in L-shaped structures, one end of the first support and one end of the second support are sleeved on the connecting rod and can rotate around the connecting rod, and the rope pressing shaft penetrates through the other ends of the first support and the second support; the first support and the second support are respectively provided with an elastic component for connecting to the frame.

The utility model also provides a hoist assembly, including frame, reel and wire rope, the reel setting is in the frame, and wire rope convolutes on the reel, and the hoist assembly still includes foretell hoist rope pressing device.

Further, the reel has a reel side plate, and a second guide structure is arranged on the reel side plate.

To sum up, the utility model discloses a hoist rope pressing device's rope pressing roller includes the interlude and sets up the first guide structure at the interlude both ends, and first guide structure is the rotatory rotator of the axial lead around the rope pressing roller, and first guide structure is including keeping away from the outer end of interlude, the inner of being connected with the interlude and being located the surface of revolution between outer end and the inner, and first guide structure reduces from the external diameter of outer end to the external diameter of inner gradually. The rotating surface of the first guide structure is an inclined surface facing the middle of the winding drum, and when the steel wire rope climbs from the first layer to the second layer, the rotating surface generates component force F to the steel wire rope_HThe steel wire rope is pushed and pulled to rewind through the first guide structure or through the first guide structure and the second guide structure together by pointing to the rope arranging direction of the second layer of the steel wire rope, so that the friction force of the steel wire rope on the second guide structure can be reduced, and the rope stacking or skipping phenomenon of the steel wire rope can be reduced or avoided; and moreover, the force applied to the steel wire rope by the hoisting rope pressing device is consistent with the force direction caused by the rope outlet angle of the steel wire rope, and meanwhile, the steel wire rope and the rope pressing roller are in rolling friction, so that the abrasion of the hoisting rope pressing device on the steel wire rope can be effectively reduced, and the service life of the steel wire rope is prolonged.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a conventional hoisting assembly in an operating state.

Fig. 2 is a schematic view of the force of the end slope of the drum of the hoisting rope roller in fig. 1 against the wire rope.

Fig. 3 is a schematic structural diagram of a hoisting assembly according to a first embodiment of the present invention.

Fig. 4 is a sectional view taken along the line iii-iii in fig. 3.

Fig. 5 is a partial structural view of a drum of the hoisting rope press in fig. 3.

Fig. 6 is a schematic view of the force of the end slope of the drum of the hoisting rope roller in fig. 3 against the wire rope.

Fig. 7 is a sectional view of a hoist assembly according to a second embodiment of the present invention.

Fig. 8 is a partial structural view of a drum of the hoisting rope press in fig. 7.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

[ first embodiment ]

Referring to fig. 3 to 5, the hoisting assembly includes a frame 51, a winding drum 52, a wire rope 53, a hoisting rope pressing device 50, and a driving device (not shown). A drum 52 is provided on the frame 51, and a wire rope 53 is wound around the drum 52.

The hoisting rope reel 50 is used for rope winding when winding the wire rope 53 into the drum 52. The hoisting rope presser 50 includes a first bracket 101, a second bracket 102, a link 103, a rope pressing shaft (not shown), and a rope pressing roller 200.

Specifically, the first bracket 101 and the second bracket 102 are arranged side by side and have the same structure, and are approximately in an L-shaped structure.

Two ends of the connecting rod 103 are provided with supports 105 for fixing on the frame 51 of the winch assembly, and two ends of the connecting rod 103 are fixed on the frame 51 through the supports 105. One end of the first bracket 101 and one end of the second bracket 102 are sleeved on the connecting rod 103 and can rotate around the connecting rod 103, and the rope pressing shaft penetrates through the other unfixed ends of the first bracket 101 and the second bracket 102.

The first bracket 101 and the second bracket 102 are further provided with an elastic member 106 for connecting to the frame 51, respectively. The elastic assembly 106 includes a spring 1061 and a spring rod 1062 connected to each other, and the spring rod 1062 is fixed to the middle of the first and

second brackets

101 and 102. The ends of the two springs 1061 far away from the spring pull rod 1062 are used to connect and fix on the frame 51.

The rope pressing roller 200 is sleeved on the rope pressing shaft and can rotate around the rope pressing shaft, and the rope pressing roller 200 is connected with the rope pressing shaft through a bearing (not shown) for example.

As shown in fig. 4 and 5, the cord-pressing roller 200 includes an intermediate section 201 and first guide structures 210 disposed at two ends of the intermediate section 201, each first guide structure 210 is a rotating body rotating around an axis O of the cord-pressing roller 200, and includes an outer end 211 far from the intermediate section 201, an inner end 212 connected to the intermediate section 201, and a rotating surface 213 located between the outer end 211 and the inner end 212, and the outer diameter of the first guide structure 210 decreases gradually from the outer diameter of the outer end 211 to the outer diameter of the inner end 212.

In this embodiment, the rope pressing roller 200 includes three parts, i.e., a left roller, a middle roller and a left roller, which is not limited to this. Wherein, the middle section 201 comprises a part of left roller and left roller, and the two first guiding structures 210 are respectively arranged at the ends of the left roller and the left roller far away from the middle roller.

In this embodiment, the axial section of the rotating surface 213 is formed by two symmetrical straight line segments 213 a. The axial section refers to a figure obtained by cutting the first guide structure 210 with a plane passing through the axial line O. The axial cross section of the rotating surface 213 in this embodiment is a straight line segment 213a, which means that the first guide structure 210 is a circular truncated cone structure, and the rotating surface 213 is a side surface of the circular truncated cone.

Preferably, the included angle between the straight line segment 213a and the axial line O of the rope pressing roller 200 is in the range of 10 ° to 15 °.

Preferably, the length of the straight line segment 213a is 35 mm to 45 mm.

In this embodiment, the roll 52 has two roll side plates 521 symmetrically arranged, and a second guiding structure 522 is provided on the roll side plate 521 at a surface facing the other roll side plate 521. The second guide structure 522 is used to cooperate with the first guide structure 210 to arrange the wire rope 53 toward the inside. The second guiding structure 522 is, for example, a guiding boss, and the position of the second guiding structure 522 is set at the ending position of the rope groove of the last circle of the full layer of the steel rope 53.

As shown in fig. 6, the hoisting rope pressing device 50 of the hoisting assembly of the present invention sets the end of the rope pressing roller 200 as the first guiding structure 210, the rotating surface 213 of the first guiding structure 210 is an inclined surface facing the middle of the winding drum 52, and when the wire rope 53 climbs from the first floor to the second floor, the component force F generated by the rotating surface 213 on the wire rope 53_HThe rope arrangement direction pointing to the second layer of the steel wire rope 53 (the direction is reverse compared with the prior art), the steel wire rope 53 is pushed and pulled to rewind through the first guide structure 210, or the steel wire rope 53 is pushed and pulled to rewind through the first guide structure 210 and the second guide structure 522 together, so that the friction force of the steel wire rope 53 on the second guide structure 522 can be reduced, and the rope stacking or rope skipping phenomenon of the steel wire rope 53 can be reduced or avoided; furthermore, the force applied by the hoisting rope pressing device 50 to the steel wire rope 53 is in the same direction as the force caused by the rope outlet angle of the steel wire rope 53, and meanwhile, the steel wire rope 53 and the rope pressing roller 200 are in rolling friction, so that the abrasion of the hoisting rope pressing device 50 to the steel wire rope 53 can be effectively reduced, and the service life of the steel wire rope 53 is prolonged.

[ second embodiment ]

As shown in fig. 7 and 8, the hoisting assembly of the present embodiment is substantially the same as the first embodiment, except that the axial section of the rotating surface 213 of the hoisting rope press 50 is two symmetrical inward-recessed curved segments 213 b. I.e., the surface of rotation 213 is an inwardly concave arcuate surface of rotation.

Preferably, the curved segment 213b is a circular arc.

Preferably, the radius of the arc of the curved segment 213b is 120 mm to 130 mm.

In other embodiments, the curved segment 213b may also be formed by a combination of circular arcs plus straight lines or a combination of multiple circular arcs with different circular arc radii.

Please refer to the first embodiment for other structures of this embodiment, which are not described herein.

The utility model discloses a hoist assembly is fit for setting up on engineering machine tool devices such as revolving machine soon.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims

1. A hoisting rope pressing device (50) comprises a first bracket (101), a second bracket (102), a rope pressing shaft connected to the first bracket (101) and the second bracket (102), and a rope pressing roller (200) arranged on the rope pressing shaft; the rope pressing roller (200) is characterized by comprising a middle section (201) and first guide structures (210) arranged at two ends of the middle section (201), the first guide structures (210) are rotating bodies rotating around an axial lead (O) of the rope pressing roller (200), each first guide structure (210) comprises an outer end (211) far away from the middle section (201), an inner end (212) connected with the middle section (201) and a rotating surface (213) located between the outer end (211) and the inner end (212), and the outer diameter of the outer end (211) and the outer diameter of the inner end (212) of each first guide structure (210) are gradually reduced.

2. Hoisting roping presser (50) according to claim 1, characterized in that the axial section of said rotating surface (213) is a straight segment (213 a).

3. Hoisting rope presser (50) as in claim 2, characterized in that the angle between the straight section (213a) and the axis (O) of the rope drum (200) ranges from 10 ° to 15 °.

4. The hoisting line closer (50) according to claim 2, wherein the length of the straight section (213a) is 35 mm to 45 mm.

5. Hoisting roping presser (50) according to claim 1, characterized in that said surface of revolution (213) has an axial section in the form of an inwardly concave curved segment (213 b).

6. Hoisting roping presser (50) according to claim 5, wherein said curved segment (213b) is an arc of a circle.

7. The hoisting line closer (50) according to claim 6, wherein the curved section (213b) has a circular arc radius of 120 mm to 130 mm.

8. The hoisting line depressor (50) of claim 1 further comprising a linkage (103) and a resilient assembly (106); two ends of the connecting rod (103) are provided with supports (105) used for being fixed on a rack (51) of a winch assembly, the first support (101) and the second support (102) are in an L-shaped structure, one end of the first support (101) and one end of the second support (102) are sleeved on the connecting rod (103) and can rotate around the connecting rod (103), and the rope pressing shaft is arranged at the other end of the first support (101) and the other end of the second support (102) in a penetrating mode; the first bracket (101) and the second bracket (102) are respectively provided with an elastic component (106) for connecting to the frame (51).

9. Hoisting assembly comprising a frame (51), a drum (52) and a wire rope (53), said drum (52) being arranged on said frame (51), said wire rope (53) being wound on said drum (52), characterized in that it further comprises a hoisting rope press (50) according to any one of claims 1 to 8.

10. The hoist assembly of claim 9, wherein the drum (52) has a drum side plate (521), and the drum side plate (521) is provided with a second guide structure (522).