CN212669047U - Cable drum and crane - Google Patents

Abstract

The present disclosure relates to a cable drum and a crane. The cable drum comprises a mandrel (1); the barrel body (2) is rotatably arranged on the mandrel (1), a spiral line groove body (21) distributed in a cylindrical spiral line is formed in the outer peripheral surface of the barrel body, and the spiral line groove body (21) is used for embedding a cable (3) wound on the barrel body (2); and the guide mechanism (4) is radially positioned on the rope coming side of the outer peripheral surface of the barrel body (2), and is provided with a limiting structure (41) for the cable (3) to pass through and limiting the direction of the cable (3), wherein the limiting structure (41) can move along the axial direction of the barrel body (2) and can guide the cable (3) before the cable (3) enters the spiral line groove body (21). The embodiment of the disclosure can avoid the fault of operation jamming of the cable drum and prevent the cable drum from being wound normally due to the invasion of foreign objects.

Description

Cable drum and crane

Technical Field

The disclosure relates to the field of engineering machinery, in particular to a cable drum and a crane.

Background

As shown in fig. 1, the cable drum is a cable winding device that provides power, control, or control signals to the mobile device: generally, a cylinder body of the cable drum is fixed, one end of a cable is fixed on the cylinder body and is connected with an electric brush inside the cylinder body, and the other end of the cable moves along with the tail end of the mobile equipment; similar to a steel tape, the cable drum winds the cable for the energy storage component by using a spiral spring: when the cable is pulled out, the spiral spring is tightened to store energy, and when the external force is removed, the spiral spring releases the energy, and the winding drum automatically winds the cable.

Particularly in the application field of cranes, when a telescopic oil cylinder of a crane moves in an extending arm, a cable drum fixed at the tail part of the telescopic oil cylinder is used for realizing the transmission of an electrical signal on the oil cylinder and an electrical signal of a rotary table of the crane. In addition, the cable drum is also used to measure the extension length of the telescopic cylinder by means of a built-in length measuring unit, which relies on the cable being wound tightly in a single layer on the drum of the cable drum.

As shown in fig. 2 to 4, the related cable drum often forms a restraint on the cable by arranging a guide rod and a guide pulley capable of sliding along the guide rod outside the drum and relying on a wire slot processed on the drum and the guide pulley tightly attached to the drum, so that the cable can be sequentially arranged in the wire slot of the drum during the winding process.

However, the existing cable drum is tightly matched with the guide pulley, so that the requirements on the structure processing precision and assembly are high, and when the matching gap between the guide rod and the drum body is deviated, the cable drum is easy to be occluded, so that the cable drum has a fault of operation clamping stagnation; the guide rod is of a cantilever beam structure, and when a cable passes through the guide pulley and has a deflection angle, the pulley rod is easy to deform under the radial force of the cable, so that the position relation between the pulley rod and the cylinder is changed, and the fit clearance deviation between the guide rod and the cylinder is caused; because the restraint structure size to the cable between leading pulley and the barrel is less, make the resistance grow of spiral spring under the condition of the foreign object invasion easily, and then lead to the unable normal rolling of cable.

Disclosure of Invention

In view of this, the present disclosure provides a cable drum and a crane, which can avoid the cable drum from being jammed during operation, and prevent the cable drum from being unable to be wound normally due to the intrusion of foreign objects.

In one aspect of the disclosure, a cable reel is provided, comprising

A mandrel;

the barrel is rotatably arranged on the mandrel, and the peripheral surface of the barrel is provided with a spiral line groove body distributed in a cylindrical spiral line manner, and the spiral line groove body is used for embedding a cable wound on the barrel; and

the guide mechanism is located on the rope coming side of the outer peripheral surface of the barrel along the radial direction and is provided with a limiting structure for the cable to pass through and limit the direction of the cable, and the limiting structure can move along the axial direction of the barrel and can guide the cable before the cable enters the spiral line groove body.

In some embodiments, the distance between the guide mechanism and the barrel is no less than twice the diameter of the cable.

In some embodiments, the guide mechanism comprises:

the pulley rod is fixedly arranged relative to the mandrel, and the length direction of the pulley rod is parallel to the axial direction of the cylinder;

the guide pulley is rotatably arranged on the pulley rod and can slide along the length direction of the pulley rod; and

the cable pin is for the fixed setting of pulley lever, and length direction is on a parallel with the length direction of pulley lever to constitute the limit structure to the cable with the race of guide pulley.

In some embodiments, the cable stop lever is a clearance fit with the guide pulley, and the distance between the cable stop lever and the groove bottom of the guide pulley is between one and two times the diameter of the cable.

In some embodiments, the guide pulley is in clearance fit with the pulley rod, and the guide pulley can swing relative to the pulley rod so that a rotating shaft of the guide pulley and the length direction of the pulley rod form a set angle.

In some embodiments, the cartridge is configured to: the value arcsin (A/b) of the ratio of the perimeter A of the outer peripheral surface to the distance b between the bottoms of the adjacent spiral groove bodies is not more than 1 degree.

In some embodiments, the barrel and cable are configured to: the value arcsin (h/l) of the arcsin function of the ratio of the height h of the cylinder to the length l of the cable is not more than 3 deg.

In some embodiments, the barrel and cable are further configured to: in the initial state of the cable winding in the barrel, the axial direction of the barrel is perpendicular to the extending direction of the cable.

In some embodiments, the position of the pulley lever relative to the cylinder is set to: after the cable is wound by the guide pulley, the extension direction of the cable is changed by an included angle of 10-60 degrees.

In some embodiments, further comprising:

the side plate is fixedly arranged at one end of the mandrel in a manner of being vertical to the axial direction of the cylinder body, and is fixedly provided with a pulley lever and a cable stop lever;

wherein, guiding mechanism still includes:

the limiting pipe is sleeved on the pulley rod and located on one side, close to the side plate, of the guide pulley, and the length of the limiting pipe is not smaller than the distance from the side plate to the spiral line groove body, closest to the side plate, of the barrel body.

In some embodiments, the guide mechanism further comprises:

the U-shaped frame comprises a cross arm and two vertical arms vertically arranged at two ends of the cross arm, the pulley lever and the cable stop lever are respectively arranged on the two vertical arms in a penetrating manner, and the length directions of the pulley lever, the cable stop lever and the cross arm are mutually parallel;

wherein the cable stop lever is located at the end of the two vertical arms.

In some embodiments, the cross-section of the helical wire groove body is semicircular, the diameter of the semicircular cross-section of the helical wire groove body is 1.1-1.2 times the outer diameter of the cable, the groove depth of the helical wire groove body is 0.4-0.6 times the outer diameter of the cable, and the distance b between the groove bottoms of adjacent helical wire groove bodies is 1.05-1.2 times the diameter d of the semicircular cross-section of the helical wire groove body.

In another aspect of the disclosure, a crane is provided, comprising the aforementioned cable drum.

Therefore, according to the embodiment of the disclosure, the fault that the operation of the cable drum is blocked can be avoided, and the situation that the cable drum cannot be normally wound due to the invasion of foreign objects can be prevented.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a prior art cable reel;

FIG. 2 is a schematic top view of a prior art cable reel;

FIG. 3 is a partial schematic view of the cable reel of FIG. 2 in area A;

FIG. 4 is a partial schematic structural view of the cable reel of FIG. 2 in the area B;

FIG. 5 is a perspective view of a cable reel according to some embodiments of the present disclosure;

FIG. 6 is a side view schematic illustration of a cable reel according to some embodiments of the present disclosure;

FIG. 7 is a partial structural schematic view of a cable and helical groove of a cable reel according to some embodiments of the present disclosure;

FIG. 8 is a perspective view of a guide mechanism for a cable reel according to some embodiments of the present disclosure;

fig. 9 is a schematic view of a change in the operating state of a guide mechanism of a cable reel according to some embodiments of the present disclosure.

In the figure:

1. the device comprises a mandrel, a barrel, a guide mechanism, a spiral line groove body, a cable, a guide mechanism, a limiting structure, a pulley rod, a guide pulley, a cable stop lever, a guide pulley rod, a guide pulley, a cable stop lever, a guide pulley, a;

a1, a cylinder in the prior art, a2, a cable in the prior art, a3, a guide bar in the prior art, a4, a guide pulley in the prior art.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

As shown in FIGS. 5 to 9:

in one aspect of the disclosure, a cable reel is provided, comprising

A mandrel 1;

the barrel body 2 is rotatably arranged on the mandrel 1, a spiral line groove body 21 in cylindrical spiral line distribution is formed in the outer peripheral surface of the barrel body 2, and the spiral line groove body 21 is used for embedding the cable 3 wound on the barrel body 2; and

the guide mechanism 4 is located on the rope coming side of the outer peripheral surface of the barrel body 2 along the radial direction, and is provided with a limiting structure 41 for the cable 3 to pass through and limiting the direction of the cable 3, and the limiting structure 41 can move along the axial direction of the barrel body 2 and can guide the cable 3 before the cable 3 enters the spiral line groove body 21.

The drum 2 is rotatable around the mandrel 1 so as to store energy when the cable is pulled out by the volute spring and release the energy when the cable needs to be retracted, so that the drum 2 can automatically wind the cable, thereby saving energy and avoiding additional arrangement of a power component. In the process of rolling up the cable in the barrel 2, the spiral line groove body 21 that the outer peripheral face was seted up on the barrel 2 can inlay and establish cable 3 to make cable 3 at barrel 2 surface individual layer, winding closely, thereby avoid cable 3 to twine each other on the barrel 2 surface, establish the condition for the position signal creation through the flexible hydro-cylinder of 3 accurate measurement of cable.

The guide mechanism 4 is located at the rope coming side of the outer circumferential surface of the cylinder 2 along the radial direction, that is, in the process of winding the cable 3 in the cylinder 2, the cable 3 firstly passes through the limiting structure 41 on the guide mechanism 4 and then is wound on the outer circumferential surface of the cylinder 2. At the in-process of cable 3 twine in barrel 2, along the winding process of cable 3, the limit structure 41 that barrel 2 axial is movable can change self position along the winding process of cable 3 to make cable 3 move to barrel 2 from guiding mechanism 4 in-process, under the effect of inlaying of helix cell body 21, just to the position of helix cell body 21 that corresponds all the time along the tangential of barrel 2 outer peripheral face.

And guiding mechanism 4 leads before cable 3 gets into helix groove body 21, and not leads when cable 3 gets into helix groove body 21 with prior art so that there is certain distance between guiding mechanism 4 and the barrel 2, no longer requires that guiding mechanism 4 and the helix groove body 21 on the barrel 2 cooperate strictly, thereby has reduced the machining precision requirement of barrel 2 and guiding mechanism 4 and the assembly precision requirement between them.

In addition, the large clearance between the front-end guide mechanism 4 and the barrel 2 adopted by the present disclosure can prevent the foreign object from being stuck in the fit clearance between the guide mechanism 4 and the barrel 2 to affect the normal rewinding of the cable when the cable is contaminated by the foreign object such as oil sludge.

Further, in some embodiments, the distance between the guiding means 4 and the cylinder 2 is specifically set to be not less than twice the diameter of the cable 3.

The distance between the guide pulley 43 and the cylinder 2 in the prior art is usually less than twice the diameter of the cable 3, so that the cable 3 can be limited between the fit clearance of the guide pulley 43 and the cylinder 2, and the cable 3 is prevented from being twined and disorderly due to shaking in the telescopic process. Compared with the prior art, although the distance between the guide mechanism 4 and the cylinder 2 in the disclosure is greater than twice of the diameter of the cable 3, the cable 3 passes through the limiting structure 41 arranged on the guide mechanism 4, and in addition, the elastic force of the spiral spring in the rewinding process enables the cylinder 2 to always tighten the cable 3, so that the cable 3 is difficult to deviate from the track set by the spiral groove body 21 at the moment, and the cable 3 is further ensured to be wound to the cylinder 2 in a single layer and tightly according to the track of the spiral groove body 21.

Further, in some embodiments, the guide mechanism 4 includes:

the pulley rod 42 is fixedly arranged relative to the mandrel 1, and the length direction of the pulley rod is parallel to the axial direction of the cylinder 2;

a guide pulley 43 rotatably provided on the pulley lever 42 and slidable in the longitudinal direction of the pulley lever 42; and

the cable stopper 44 is fixed to the pulley lever 42, has a longitudinal direction parallel to the longitudinal direction of the pulley lever 42, and forms a stopper structure 41 for the cable 3 together with the pulley groove of the guide pulley 43.

The cable stop lever 44 and the pulley groove on the guide pulley 43 enclose the limiting structure 41 of the cable 3, and the sliding fit between the pulley lever 42 and the guide pulley 43 enables the limiting structure 41 to move along the axial direction of the barrel 2.

Further, in some embodiments, the cable stop 44 is a clearance fit with the guide pulley 43, and the distance between the cable stop 44 and the groove bottom of the guide pulley 43 is between one and two times the diameter of the cable 3.

An appropriate gap is reserved between the cable stop lever 44 and the outermost edge of the guide pulley 43, so that the guide pulley 43 does not contact with the cable stop lever 44 when moving axially along the barrel 2, and meanwhile, the distance between the cable stop lever 44 and the groove body of the guide pulley 43 is between one time and two times of the diameter of the cable 3, and the cable 3 cannot be separated from the gap between the cable stop lever 44 and the groove body of the guide pulley 43.

As shown in fig. 9, in the initial state shown on the left side of fig. 9, the cable 3 is completely wound in the spiral groove body 21 of the barrel 2, the spiral groove body 21 where the end of the cable 3 is located on the leftmost side of the winding drum, and the guide pulley 43 is also located on the leftmost side of the pulley lever 42. With the continuous extension of the cable 3, in the intermediate state shown on the right side of fig. 9, the guide pulley 43 slides to the right side along with the cable 3 until the cable 3 is fully extended, and the guide pulley 43 moves to the rightmost position of the pulley lever 42, thereby completing the guiding function of the extension process of the cable 3.

Based on this, in the winding or stretching-out process of the cable 3, the end of the cable 3 is driven by the tail end of the telescopic arm of the machinery such as a crane and the like to do linear motion, and the cable 3 is wound on the barrel 2 along the spiral line groove body 21, so that a certain included angle exists between the spiral line groove body 21 and the straight line where the motion track of the end of the cable 3 is located. In view of this, in some embodiments, the guide pulley 43 is in clearance fit with the pulley lever 42, and the guide pulley 43 is swingable relative to the pulley lever 42 such that the rotation axis of the guide pulley 43 forms a set angle with the longitudinal direction of the pulley lever 42.

For clearance fit between guide pulley 43 and the pulley lever 42 in this disclosure for guide pulley 43 can deflect certain angle under the effect of cable 3, and then makes on the projection of horizontal plane, and the tangent direction that cable 3 leaves guide pulley 43 in guide pulley 43 position department and the contained angle between the 3 terminal motion orbit place straight lines of cable can equal the contained angle between the spiral line cell body 21 for the 3 terminal motion orbit place straight lines of cable. Guide pulley 43 can swing for pulley lever 42 promptly, has realized that the contained angle of cable 3 in the horizontal direction changes to make the cable 3 that leaves guide pulley 43 more be adapted to the extending direction and the cylinder 2 peripheral surface tangential helix groove body 21 that has certain contained angle, ensure that the winding of cable 3 on cylinder 2 is all the time along the orbit that helix groove body 21 was drawn a rule.

Further, the applicant researches and discovers that, because the spiral groove 21 has a certain winding guiding function, and the guiding mechanism 4 in the present disclosure is far away from the surface of the barrel 2, to ensure that the cable 3 is regularly wound and not tangled during the rewinding process, it is required to control the horizontal deflection angle of the cable 3 during the winding process within a small range, and specifically, in some embodiments, the barrel 2 is configured to: the value arcsin (A/b) of the ratio of the perimeter A of the outer peripheral surface to the distance b between the bottoms of the adjacent spiral groove bodies 21 is not more than 1 degree.

Based on the structure of the cylinder 2, when the cable 3 winds around the cylinder 2 for one circle, the displacement of the tail end of the cable 3 is the perimeter A of the cylinder 2, the axial displacement of the cable 3 on the cylinder 2 is the distance b between the adjacent spiral grooves, and at the moment, arcsin (A/b) is not more than 1 degree, so that the horizontal deflection angle generated when the cable 3 winds around the cylinder 2 for one circle is not more than 1 degree, and the rope disorder phenomenon generated by an overlarge horizontal deflection angle is further avoided.

On this basis, in some embodiments, the barrel 2 and cable 3 are configured to: the value arcsin (h/l) of the arcsin function of the ratio of the height h of the cylinder 2 to the length l of the cable 3 is not more than 3 deg..

Based on the above-mentioned barrel 2 structure and the relation between 3 lengths of cable for the horizontal deflection angle of cable 3 between the initial position that begins to convolute and the final position of whole convolutes does not exceed 3, and then makes the projection of the terminal motion orbit of cable 3 on the horizontal plane be perpendicular to the axis direction of barrel 2 basically, thereby under the condition that this disclosed guiding mechanism 4 does not form closely cooperating with helix groove body 21 on barrel 2, ensures that cable 3 can be along the orbit that helix groove body 21 set for all the time, the individual layer, evenly and closely twine in the outer peripheral face of barrel 2.

Based on the above-mentioned number relationship between the circumference a of the outer circumferential surface of the cylinder and the distance b between the bottoms of the adjacent spiral groove bodies, and the number relationship between the height h of the cylinder and the length l of the cable, in order to keep the included angle between the extending direction of the cable in the winding process and the radial direction of the cylinder in a small range all the time, so as to avoid the cable from falling off the given track, in some embodiments, the cylinder 2 and the cable 3 are further configured to: in an initial state in which the cable 3 is wound around the cylindrical body 2, the axial direction of the cylindrical body 2 is perpendicular to the extending direction of the cable 3.

To reduce the adverse effect of cable 3 whipping on the cable 3 spooling process, in some embodiments, the position of the pulley lever 42 relative to the barrel is set to: after the cable 3 winds the guide pulley 43, the extension direction of the cable 3 changes by an included angle of 10-60 degrees.

As shown in fig. 5 and 6, after the cable 3 is led out from the spiral groove body 21 of the cylinder 2, the cable passes through between the guide pulley 43 and the cable stop lever 44, fully contacts with the guide pulley 43, and deflects by an angle of 10-60 degrees along the axis of the guide pulley 43, and the deflection at the angle enables the guide pulley 43 to eliminate most of the shaking of the cable 3 when the cable 3 shakes violently, thereby ensuring the smooth motion of the cable 3 between the guide pulley 43 and the cylinder 2.

Further, to provide the guiding mechanism 4, in some embodiments, the cable reel further comprises:

the side plate 5 is axially and fixedly arranged at one end of the mandrel 1 perpendicular to the cylinder body 2, and is fixedly provided with a pulley rod 42 and a cable stop rod 44;

wherein, guiding mechanism 4 still includes:

the limiting pipe 45 is sleeved on the pulley lever 42, is positioned on one side of the guide pulley 43 close to the side plate 5, and has a length not less than the distance from the side plate 5 to the spiral line groove body 21 on the cylinder body 2 closest to the side plate 5.

Because certain gap has between barrel 2 and the curb plate 5, consequently this disclosure prevents that leading pulley 43 from being too close to curb plate 5 and making cable 3 imbed the gap between barrel 2 and the curb plate 5 through setting up spacing pipe 45, and the length of spacing pipe 45 should be not less than the curb plate 5 distance to the helix cell body 21 that is closest to curb plate 5 on the barrel 2 this moment.

Further, in some embodiments, the guiding mechanism 4 further comprises:

the U-shaped frame 46 comprises a cross arm and two vertical arms vertically arranged at two ends of the cross arm, the pulley lever 42 and the cable stop lever 44 are respectively arranged on the two vertical arms in a penetrating manner, and the respective length directions of the pulley lever 42, the cable stop lever 44 and the cross arm are mutually parallel;

wherein the cable stop lever 44 is located at the end of both vertical arms.

The U-shaped frame 46 is arranged, so that both ends of the pulley lever 42 and the cable stop lever 44 can be sufficiently supported, and the pulley lever 42 or the cable stop lever 44 is prevented from being deformed due to the fact that the pulley lever 42 or the cable stop lever 44 adopts a cantilever beam structure and is easily subjected to radial force from the cable 3 in the long-term use process, and further the matching deviation among all parts in the guide mechanism 4 is avoided.

Further, in some embodiments, the cross-section of the spiral line groove body 21 is semicircular, the diameter of the semicircular cross-section of the spiral line groove body 21 is 1.1 to 1.2 times of the outer diameter of the cable 3, the groove depth of the spiral line groove body 21 is 0.4 to 0.6 times of the outer diameter of the cable 3, so that about half part of the cable 3 falls into the spiral line groove body 21, the distance b between the groove bottoms of the adjacent spiral line groove bodies 21 is 1.05 to 1.2 times of the diameter d of the semicircular cross-section of the spiral line groove body 21, the single-layer winding of the cable 3 on the cylinder body 2 is effectively ensured, and the horizontal deflection angle of the cable 3 is limited.

In another aspect of the disclosure, a crane is provided, comprising the aforementioned cable drum.

Therefore, according to the embodiment of the disclosure, the fault that the operation of the cable drum is blocked can be avoided, and the situation that the cable drum cannot be normally wound due to the invasion of foreign objects can be prevented.

Compared with the prior art, the scheme that the guide pulley 43 is strictly matched with the spiral line groove body 21 of the cylinder body 2 in the prior art is abandoned, only the front guide mechanism 4 is required to be at a proper distance from the cylinder body 2, and the requirements of the structure processing precision and the assembly precision of the cylinder body 2 are reduced; the front guide pulley 43 adopted in the present disclosure can reserve a large fit clearance, when foreign matters such as oil sludge are stained with the cable, the cable can still be normally rewound, and in the prior art, when the cable is stained with dirt, the condition of mechanism operation jamming can occur; the fault tolerance of this disclosure is strong, even the indiscriminate rope condition of winding appears, the reel can continue to wrap the cable back in this scheme, avoids the cable to wrap the serious fault who causes again.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (13)

1. A cable drum is characterized by comprising

A mandrel (1);

the barrel body (2) is rotatably arranged on the mandrel (1), a spiral line groove body (21) distributed in a cylindrical spiral line is formed in the outer peripheral surface of the barrel body, and the spiral line groove body (21) is used for embedding a cable (3) wound on the barrel body (2); and

the guide mechanism (4) is located on the rope coming side of the outer peripheral surface of the barrel body (2) in the radial direction, a limiting structure (41) for the cable (3) to pass through and limiting the direction of the cable (3) is arranged, the limiting structure (41) can move in the axial direction of the barrel body (2), and the cable (3) can be guided before the cable (3) enters the spiral line groove body (21).

2. Cable drum according to claim 1, characterized in that the distance between the guiding means (4) and the drum (2) is not less than twice the diameter of the cable (3).

3. Cable drum according to claim 1, characterized in that the guiding means (4) comprise:

the pulley rod (42) is fixedly arranged relative to the mandrel (1), and the length direction of the pulley rod is parallel to the axial direction of the cylinder (2);

a guide pulley (43) rotatably provided to the pulley lever (42) and slidable in a longitudinal direction of the pulley lever (42); and

and the cable stop lever (44) is fixedly arranged relative to the pulley lever (42), the length direction of the cable stop lever is parallel to the length direction of the pulley lever (42), and the cable stop lever and a wheel groove of the guide pulley (43) form a limiting structure (41) for the cable (3).

4. The cable drum according to claim 3, characterized in that the cable bar (44) is a clearance fit with the guide pulley (43) and the distance between the cable bar (44) and the groove bottom of the guide pulley (43) is between one and two times the diameter of the cable (3).

5. Cable drum according to claim 4, characterized in that there is a clearance fit between the guide pulley (43) and the pulley lever (42), the guide pulley (43) being pivotable relative to the pulley lever (42) such that the axis of rotation of the guide pulley (43) is at a set angle to the length direction of the pulley lever (42).

6. The cable reel as claimed in claim 5, characterized in that the drum (2) is configured to: the value arcsin (A/b) of the ratio of the perimeter A of the outer peripheral surface to the distance b between the bottoms of the adjacent spiral line grooves (21) is not more than 1 degree.

7. The cable reel according to claim 6, characterized in that the drum (2) and the cable (3) are configured to: the arcsine function value arcsin (h/l) of the ratio of the height h of the cylinder (2) to the length l of the cable (3) is not more than 3 degrees.

8. The cable reel according to claim 7, characterized in that the drum (2) and the cable (3) are further configured to: in an initial state in which the cable (3) is wound around the cylindrical body (2), the axial direction of the cylindrical body (2) is perpendicular to the extending direction of the cable (3).

9. The cable reel of claim 3, wherein the position of the pulley lever (42) relative to the drum is set to: cable (3) winding warp behind guide pulley (43), the extending direction of cable (3) takes place 10 ~ 60 contained angle changes.

10. The cable reel as recited in claim 3, further comprising:

the side plate (5) is axially and fixedly arranged at one end of the mandrel (1) and is perpendicular to the cylinder body (2), and the pulley lever (42) and the cable stop lever (44) are fixedly installed;

wherein the guide mechanism (4) further comprises:

and the limiting pipe (45) is sleeved on the pulley lever (42) and located at a position where the guide pulley (43) is close to one side of the side plate (5), and the length of the limiting pipe is not less than the distance from the side plate (5) to the barrel body (2) which is closest to the spiral line groove body (21) of the side plate (5).

11. Cable drum as claimed in claim 10, characterized in that the guiding means (4) further comprise:

the U-shaped frame (46) comprises a cross arm and two vertical arms vertically arranged at two ends of the cross arm, the pulley rod (42) and the cable stop rod (44) are respectively arranged on the two vertical arms in a penetrating mode, and the length directions of the pulley rod (42), the cable stop rod (44) and the cross arm are mutually parallel;

wherein the cable stop lever (44) is located at the distal end of the two vertical arms.

12. The cable drum as claimed in claim 3, characterized in that the cross-section of the spiral groove (21) is semicircular, the diameter of the semicircular cross-section of the spiral groove (21) is 1.1 to 1.2 times the outer diameter of the cable (3), the groove depth of the spiral groove (21) is 0.4 to 0.6 times the outer diameter of the cable (3), and the distance b between the groove bottoms of adjacent spiral grooves (21) is 1.05 to 1.2 times the diameter d of the semicircular cross-section of the spiral groove (21).

13. A crane comprising a cable drum as claimed in any one of claims 1 to 12.

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