CN211871248U

CN211871248U - Three-ring protector, winch and crane

Info

Publication number: CN211871248U
Application number: CN202020495069.7U
Authority: CN
Inventors: 孙雪峰; 李利斌; 徐金
Original assignee: Sany America Inc
Current assignee: Zhejiang Sany Equipment Co Ltd; Sany America Inc
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-11-06
Anticipated expiration: 2030-04-07

Abstract

The utility model relates to the field of engineering machinery, in particular to a three-ring protector, a winch and a crane; the three-ring protector of the utility model comprises a rope pressing device, a detection device and a fixing device, wherein the fixing device comprises a support shaft which can be arranged at the winch and is positioned at the outer side of the winch; the detection device is fixedly arranged on the support shaft; the rope pressing device comprises an elastic piece and a rope pressing mechanism, and the rope pressing mechanism is rotatably connected with the supporting shaft and can be matched with the detection device; the elastic piece is connected between the supporting shaft and the rope pressing mechanism, and the elastic piece is configured to enable the rope pressing mechanism to always have a pressing and winding tendency. The utility model discloses a three rings of protectors set up and detect putting the rope surplus in the outside of hoist, and then when three rings of protectors broke down, were convenient for maintain.

Description

Three-ring protector, winch and crane

Technical Field

The utility model relates to an engineering machine tool field particularly, relates to three protector, hoist engine and hoist.

Background

The winch three-circle protection device on the crawler crane provided by the related technology is embedded in the winch, rotates along with the winch, and is detected and protected in the rotating process; because the three-ring protector that the correlation technique provided sets up in the inside of hoist, and then its maintenance's after breaking down degree of difficulty is big.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-ring protector, hoist engine and hoist, three-ring protector set up and detect the surplus of putting the rope in the outside of hoist, and then when three-ring protector breaks down, are convenient for maintain.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the present invention provides a three-ring protector, which includes a rope pressing device, a detecting device, and a fixing device, where the fixing device includes a support shaft, and the support shaft can be disposed on a winch and located outside the winch; the detection device is fixedly arranged on the support shaft; the rope pressing device comprises an elastic piece and a rope pressing mechanism, and the rope pressing mechanism is rotatably connected with the supporting shaft and can be matched with the detection device; the elastic piece is connected between the supporting shaft and the rope pressing mechanism, and the elastic piece is configured to enable the rope pressing mechanism to always have a pressing and winding tendency.

In an optional embodiment, the rope pressing mechanism comprises a connecting assembly and a roller, the roller is rotatably arranged on the connecting assembly, the connecting assembly is rotatably connected with the supporting shaft, the elastic piece is connected between the connecting assembly and the supporting shaft, and the elastic piece is configured to enable the connecting assembly to drive the roller to always have a tendency of pressing a winch.

In an alternative embodiment, the coupling assembly includes a coupling plate and a bracket coupled to each other, the roller is rotatably coupled to the bracket, the coupling plate is rotatably coupled to the support shaft, and the elastic member is coupled to the coupling plate and the support shaft.

In an optional embodiment, the connecting assembly further includes a first fastener, the connecting plate and the bracket are connected by the first fastener, one of the connecting plate and the bracket is provided with a first waist-shaped hole, and the first fastener is matched with the first waist-shaped hole.

In an optional embodiment, the rope pressing mechanism further comprises a base, the base is fixedly connected with the supporting shaft, one end of the elastic piece is connected with the connecting assembly, and the other end of the elastic piece is connected with the supporting shaft through the base.

In an alternative embodiment, the rope pressing mechanism further comprises a detection plate, the detection plate is fixedly connected with one end, away from the roller, of the connecting assembly, the detection plate is rotatably connected with the supporting shaft, and the detection plate can be matched with the detection device.

In an optional embodiment, the detection plate is provided with a second waist-shaped hole, one end of the connecting assembly, which is far away from the roller, is provided with a second fastener, and the second fastener is matched with the second waist-shaped hole.

In an optional embodiment, the fixing device further comprises a mounting plate, the support shaft is connected with the mounting plate, and the mounting plate can be connected with the winch; and/or the presence of a gas in the gas,

the mounting panel has been seted up third waist type hole, and third waist type hole is used for setting up the third fastener, and the third fastener can be connected with the hoist.

In a second aspect, an embodiment of the present invention provides a winding engine, including a winding and a three-ring protector disposed at any one of the aforementioned embodiments of the winding.

In a third aspect, an embodiment of the present invention provides a crane, including a three-turn protector or a winch according to any one of the foregoing embodiments.

The utility model discloses three rings of protectors's beneficial effect includes: the supporting shaft of the three-ring protector provided by the embodiment of the utility model can be arranged outside the winch, the detection device is fixedly arranged on the supporting shaft, the rope pressing mechanism is rotatably connected with the supporting shaft and can be matched with the detection device, and the elastic piece is connected between the supporting shaft and the rope pressing mechanism and is configured to ensure that the rope pressing mechanism always has the tendency of pressing the winch; because the back shaft sets up when the hoist, is located the outside of hoist, and then makes detection device, the rope pressing mechanism and the elastic component that set up in the back shaft all be located the outside of hoist, so, when this three protector breaks down, be convenient for maintain the three protectors that are located the outside.

The utility model discloses hoist engine's beneficial effect includes: the embodiment of the utility model provides a hoist engine includes foretell three ring protectors, and these three ring protectors set up in the outside of hoist, when this three ring protector breaks down, is convenient for maintain the three ring protectors that are located the outside.

The utility model discloses hoist's beneficial effect includes: the embodiment of the utility model provides a hoist includes above-mentioned three protector or hoists, and three protectors set up in the outside of hoist, when this three protector breaks down, is convenient for maintain the three protector that lie in the outside.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a hoist in an embodiment of the present invention;

fig. 2 is a schematic structural view of a three-ring protector in an embodiment of the present invention;

fig. 3 is a schematic structural view of a fixing device in an embodiment of the present invention;

fig. 4 is a schematic structural view of a rope pressing device in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a detection device according to an embodiment of the present invention.

Description of reference numerals: 010-hoisting; 020-three-turn protector; 100-a rope pressing device; 200-a detection device; 300-a fixture; 310-support axis; 110-an elastic member; 120-a rope pressing mechanism; 121-a connecting assembly; 122-a roller; 123-connecting plate; 124-a bracket; 125-a first fastener; 126-first kidney-shaped hole; 130-a base; 140-a detection board; 141-second kidney-shaped hole; 142-a second fastener; 311-a mounting plate; 312-third kidney hole; 313-a third fastener; 400-a roller; 410-hoisting frame; 420-side plate; 127-an extension plate; 128-a support plate; 1231-a first shaft hole; 1232-abutment block; 131-a mounting cavity; 132-a side wall; 143-second shaft hole; 144-a connecting portion; 145-a detection part; 210-a fixed plate; 220-detection switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "parallel" and "perpendicular" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present embodiment provides a crane, which includes a hoist; further, the winch comprises a winch 010 and a three-ring protector 020 arranged on the winch 010, wherein the three-ring protector 020 is used for detecting the rope releasing allowance of the winch 010.

Referring to fig. 2, the three-ring protector 020 of the present embodiment includes: the rope pressing device 100, the detecting device 200 and the fixing device 300, wherein the fixing device 300 comprises a supporting shaft 310, and the supporting shaft 310 can be arranged on the winch 010 and is positioned on the outer side of the winch 010; the detection device 200 is fixedly arranged on the supporting shaft 310; the rope pressing device 100 comprises an elastic member 110 and a rope pressing mechanism 120, wherein the rope pressing mechanism 120 is rotatably connected with the supporting shaft 310 and can be matched with the detection device 200; the elastic member 110 is connected between the support shaft 310 and the rope pressing mechanism 120, and the elastic member 110 is configured to cause the rope pressing mechanism 120 to have a tendency to press the winding 010 at all times.

When above-mentioned three ring protector 020 sets up in hoist 010, back shaft 310 is located the outside of hoist 010, and detection device 200 and pressure rope mechanism 120 all are connected with back shaft 310, and elastic component 110 connects between back shaft 310 and pressure rope mechanism 120, can make detection device 200, elastic component 110 and pressure rope mechanism 120 all are located the outside of hoist 010, also be that three ring protector 020 wholly sets up in the outside of hoist 010, if set up when three ring protector 020 of hoist 010 breaks down, be convenient for maintain it.

When the three-turn protector 020 is provided in the winch 010 to detect the rope unwinding margin, the rope pressing mechanism 120 of the three-turn protector 020 tends to press the drum 400 of the winch 010 for winding the wire rope by the elastic force of the elastic member 110. The above-mentioned rope pressing mechanism 120 and detection device 200 cooperate and include: when only the innermost layer of the drum 400 of the winch 010 remains and the steel wire rope of the innermost layer is more than or equal to three turns, or the number of the steel wire rope layers on the drum 400 of the winch 010 is more than 1, the rope pressing mechanism 120 is pressed on the steel wire rope of the winch 010 all the time under the action of the elastic part 110, at this time, the rope pressing mechanism 120 and the detection device 200 have a first matching state, and the detection device 200 outputs a first detection signal; when only the innermost layer of the drum 400 of the winch 010 remains and the steel wire rope of the innermost layer is less than three turns, the rope pressing mechanism 120 presses on the drum 400 under the elastic action of the elastic member 110 instead of pressing on the steel wire rope, at this time, the rope pressing mechanism 120 and the detection device 200 have a second matching state, and the detection device 200 outputs a second detection signal. It should be further noted that, when the three-turn protector 020 is used, the rope unwinding margin of the winch 010 can be determined based on the first detection signal and the second detection signal output from the detection device 200.

Referring to fig. 1 and 2, the fixing device 300 further includes a mounting plate 311, the supporting shaft 310 is connected to the mounting plate 311, and the mounting plate 311 can be connected to the winch 010; this arrangement enables the support shaft 310 to be stably provided to the hoist 010 by the mounting plate 311.

Referring to fig. 1, the winding 010 of the embodiment includes a drum 400 and a winding frame 410 for arranging the drum 400, and the mounting plate 311 is connected to the winding frame 410. Further, the winding frame 410 includes two side plates 420 disposed opposite to each other and at an interval, and both ends of the drum 400 are rotatably connected to the two side plates 420, respectively, along the axial direction of the drum 400; the mounting plate 311 is connected to one of the side plates 420, the supporting shaft 310 is connected to the mounting plate 311, one end of the supporting shaft 310, which is far away from the mounting plate 311, extends toward the other side plate 420, the axis of the supporting shaft 310 is parallel to the axis of the drum 400, and the supporting shaft 310 is distributed on the outer side of the drum 400. The rope pressing mechanism 120 rotatably coupled to the support shaft 310 can press the wire rope wound around the drum 400 or the drum 400 outside the drum 400 by the elastic member 110.

It should be noted that the winch 010 further has an outer side for releasing the rope and an inner side for releasing the rope, and the two side plates 420 can be divided into an outer side plate and an inner side plate, the outer side plate is located at the outer side for releasing the rope, and the inner side plate is located at the inner side for releasing the rope; when only one layer of the wire ropes remains on the drum 400 and the last layer of the wire ropes is released from the drum 400, the wire ropes are sequentially released from the outside of the rope unwinding to the inside of the rope unwinding on the drum 400. It should be further noted that, in order to enable the three-turn protector 020 of this embodiment to effectively detect the rope releasing allowance of the winch 010, the mounting plate 311 is connected to the inner side plate, and one end of the supporting shaft 310, which is far away from the mounting plate 311, extends to the outer side plate, so that when the last layer of steel wire rope on the drum 400 is less than three turns, the rope pressing mechanism 120 rotatably disposed on the supporting shaft 310 is favorable for stably detecting the rope releasing allowance, that is, when the last layer of steel wire rope on the drum 400 is just left three turns, the rope pressing mechanism 120 can also press the third circle of steel wire rope.

Referring to fig. 1 to 3, the mounting plate 311 is provided with a third kidney-shaped hole 312, the third kidney-shaped hole 312 is used for installing a third fastening member 313, and the third fastening member 313 can be connected with the winch 010; further, when the three-turn protector 020 of the embodiment is disposed on the winch 010, the third fastening member 313 disposed in the third kidney-shaped hole 312 of the mounting plate 311 is connected to the corresponding side plate 420 of the winch frame 410, so that the mounting plate 311 and the winch 010 can be stably connected.

Further, the length extending direction of the third kidney-shaped hole 312 is the same as the radial direction of the drum 400; so set up, can be through adjusting the position of third fastener 313 in third waist type hole 312, the position that mounting panel 311 and curb plate 420 are connected is adjusted, and then the distance of the periphery interval of regulation back shaft 310 and cylinder 400, thereby realize the diameter size of cylinder 400 according to hoist 010, perhaps the amount of winding wire rope on the cylinder 400, adjust the position of back shaft 310, make rotationally set up in the rope pressing mechanism 120 of back shaft 310 can cooperate with hoist 010 effectively, improve the stability of detection.

It should be noted that, in other embodiments, the length extending direction of the third kidney-shaped hole 312 may also be disposed at an angle with the radial direction of the drum 400, and is not limited herein.

The number of the third kidney-shaped holes 312 formed in the mounting plate 311 can be selected according to the requirement; in this embodiment, the mounting plate 311 is provided with four third waist-shaped holes 312, and the four third waist-shaped holes 312 are sequentially distributed at intervals along the length direction of the mounting plate 311. With such an arrangement, the mounting plate 311 can be further disposed on the winding frame 410 by using the third fastening member 313 to cooperate with the different third kidney-shaped hole 312, so as to adjust the position of the mounting plate 311 on the winding frame 410 more flexibly. In other embodiments, the number of the third kidney-shaped holes 312 formed in the mounting plate 311 may also be one, two, three, etc., and is not limited herein.

The number of the third fastening members 313 may be selected as needed; in this embodiment, the mounting plate 311 is coupled to the winding frame 410 by two third fastening members 313 and the third kidney-shaped holes 312, and the two third fastening members 313 and two of the four third kidney-shaped holes 312 are coupled to improve the stability of the mounting plate 311 disposed on the winding frame 410. In other embodiments, the number of the third fastening members 313 may also be one, three, etc., and is not particularly limited herein. The third fastening member 313 includes a bolt, a screw, or the like.

Referring to fig. 3, in the present embodiment, the supporting shaft 310 is disposed at one end of the mounting plate 311, so as to prevent the supporting shaft 310 from interfering with the position adjustment of the mounting plate 311. Further, the supporting shaft 310 is connected to the mounting plate 311 at an angle to improve the stability of the connection structure between the supporting shaft 310 and the mounting plate 311. The included angle between the supporting shaft 310 and the mounting plate 311 can be selected according to requirements; in this embodiment, the angle between the supporting shaft 310 and the mounting plate 311 is 90 °; in other embodiments, the included angle between the supporting shaft 310 and the mounting plate 311 may also be 85 degrees, 98 degrees, etc., and is not particularly limited herein.

The connection mode of the supporting shaft 310 and the mounting plate 311 can be selected according to requirements; in this embodiment, the supporting shaft 310 and the mounting plate 311 are integrally formed; in other embodiments, the connection manner of the supporting shaft 310 and the mounting plate 311 may also be welding, clamping, or screwing.

Referring to fig. 2 and 4, the rope pressing mechanism 120 of the present embodiment includes a connecting assembly 121 and a roller 122, the roller 122 is rotatably disposed on the connecting assembly 121, and the connecting assembly 121 is rotatably connected to the supporting shaft 310; specifically, the roller 122 is rotatably disposed at one end of the connecting assembly 121, one end of the connecting assembly 121 away from the roller 122 is rotatably connected to the supporting shaft 310, the elastic member 110 is connected between the connecting assembly 121 and the supporting shaft 310, and the elastic member 110 is configured to make the connecting assembly 121 and the roller 122 always have a tendency to press the winch 010. So set up, when the cylinder 400 release wire rope of roll hoist 010, press the gyro wheel 122 on the wire rope of winding on the cylinder 400 and can rotate in step, and then can avoid the gyro wheel 122 that coupling assembling 121 keeps away from the setting of support shaft 310 one end to interfere the wire rope and is released from the cylinder 400 of hoist 010.

Referring to fig. 2 and 4, the connecting assembly 121 includes a connecting plate 123 and a bracket 124 connected to each other, the roller 122 is rotatably connected to the bracket 124, and the connecting plate 123 is rotatably connected to the supporting shaft 310; specifically, the roller 122 is rotatably connected to an end of the bracket 124 remote from the connecting plate 123, an end of the connecting plate 123 remote from the bracket 124 is rotatably connected to the support shaft 310, and the elastic member 110 is connected between an end of the connecting plate 123 remote from the bracket 124 and the support shaft 310.

Further, referring to fig. 4, the connection assembly 121 further includes a first fastener 125, the connection plate 123 is connected to the bracket 124 through the first fastener 125, one of the connection plate 123 and the bracket 124 is provided with a first kidney-shaped hole 126, and the first fastener 125 is matched with the first kidney-shaped hole 126 to connect the connection plate 123 and the bracket 124. In this embodiment, the first kidney-shaped hole 126 is opened in the bracket 124, and the first fastener 125 is simultaneously engaged with the first kidney-shaped hole 126 and the connecting plate 123, so that the bracket 124 is connected with the connecting plate 123; in other embodiments, the first kidney-shaped hole 126 opens at the connection plate 123.

The number of first fasteners 125 and first kidney-shaped holes 126 may be selected as desired; in this embodiment, the bracket 124 is provided with two first kidney-shaped holes 126, the connecting plate 123 is provided with two first fastening members 125, and the two first fastening members 125 and the two first kidney-shaped holes 126 are correspondingly matched with each other.

It should be noted that, referring to fig. 4, the first kidney-shaped hole 126 is formed in the bracket 124, and the relative positions of the bracket 124 and the connecting plate 123 can be adjusted by adjusting the position of the first fastening member 125 engaged with the first kidney-shaped hole 126, so that the rope pressing mechanism 120 is suitable for winches 010 of various sizes or winches 010 wound with different amounts of steel ropes.

Referring to fig. 4, the bracket 124 of the present embodiment includes an extending plate 127 and a substantially U-shaped supporting plate 128, the roller 122 is rotatably connected to the supporting plate 128, specifically, the roller 122 is rotatably connected to the supporting plate 128 through a rotating shaft; the extension plate 127 is formed with a first waist-shaped hole 126, i.e. the extension plate 127 is connected to the connection plate 123. Further, the length extension direction of the first kidney-shaped hole 126 is consistent with the length extension manner of the extension plate 127. The connection mode of the extension plate 127 and the support plate 128 can be selected according to the requirement; in the present embodiment, the extension plate 127 and the support plate 128 are integrally formed; in other embodiments, the connection between the extension plate 127 and the support plate 128 may be welded, screwed, clamped, or the like.

Referring to fig. 2, in the embodiment, a first shaft hole 1231 is formed at an end of the connecting plate 123 away from the bracket 124, and the supporting shaft 310 is inserted into the first shaft hole 1231, so that the connecting plate 123 can rotate around the axis of the supporting plate 128.

Referring to fig. 2, an abutting block 1232 is connected to an end of the connecting plate 123 away from the bracket 124, and an end of the elastic element 110 is connected to the abutting block 1232, so that the elastic force of the elastic element 110 can stably act on the connecting plate 123.

Referring to fig. 2 and 4, the rope pressing mechanism 120 of the present embodiment further includes a base 130, the base 130 is fixedly connected to the supporting shaft 310, one end of the elastic element 110 is connected to the connecting assembly 121, and the other end is connected to the supporting shaft 310 through the base 130, that is, the elastic element 110 is disposed between the connecting assembly 121 and the supporting shaft 310 through the base 130; with this arrangement, it is possible to improve the structural stability of the elastic member 110, i.e., to allow the elastic member 110 to be stably coupled between the coupling assembly 121 and the support shaft 310.

The elastic member 110 can be selected as required, and in this embodiment, the elastic member 110 is a torsion spring, the supporting shaft 310 is located to the torsion spring sleeve, and the first torsion arm of the torsion spring abuts against the base 130, and the second torsion arm abuts against the abutting block 1232 of the connecting plate 123, so that the rope pressing assembly has a tendency of pressing the winch 010 under the elastic action of the torsion spring.

It should be noted that, in other embodiments, the elastic member 110 may also be a spring, an elastic rubber strip, or the like, and is not limited herein.

Referring to fig. 4, the base 130 of the present embodiment is fixedly connected to the supporting shaft 310 by a fastener, so that the base 130 is stably connected to the supporting shaft 310; the fasteners include bolts or screws, etc. Further, base 130 has been seted up and has been had open-ended installation cavity 131, and base 130 has lateral wall 132, this lateral wall 132 is relative and spaced distribution with connecting plate 123, and this lateral wall 132 has seted up the through-hole, back shaft 310 stretches into the installation cavity 131 after from the first shaft hole 1231 of connecting plate 123, stretch out from the through-hole again, the torsional spring that the cover was located back shaft 310 is located installation cavity 131, so set up, can make the torsional spring more stable for the mounted position of back shaft 310, provide stable elasticity effect for pressing the rope subassembly, make the rope subassembly of pressing have the trend of pressing hoist 010 all the time.

Referring to fig. 2 and 4, the rope pressing mechanism 120 of the present embodiment further includes a detection plate 140, the detection plate 140 is fixedly connected to an end of the connecting assembly 121 away from the roller 122, the detection plate 140 is rotatably connected to the supporting shaft 310, and the detection plate 140 can be matched with the detecting device 200; it should be understood that the aforementioned rope pressing mechanism 120 and the detecting device 200 have a first fitting state and a second fitting state, and in this embodiment, specifically, the detecting plate 140 and the detecting device 200 have a first fitting state and a second fitting state.

Further, the detection plate 140 is connected to an end of the connection plate 123 remote from the bracket 124, and the detection plate 140 is located on a side of the connection plate 123 remote from the base 130, so that the engagement of the detection plate 140 with the detection device 200 is not interfered by other components.

Referring to fig. 4, the detection plate 140 of the present embodiment is provided with a second kidney-shaped hole 141, one end of the connection member 121 away from the roller 122 is provided with a second fastening member 142, and the second fastening member 142 is matched with the second kidney-shaped hole 141. With this arrangement, the position of the detection plate 140 arranged on the connection assembly 121 can be adjusted by the second fastening member 142 and the second kidney-shaped hole 141 which are matched with each other, so that the rope pressing mechanism 120 can be applied to winches 010 of various sizes or winches 010 wound with different amounts of steel ropes. Further, the end of the connecting component 121 away from the roller 122 specifically refers to: the connecting plate 123 is remote from the end of the roller 122.

Referring to fig. 4, in the present embodiment, the detecting plate 140 is provided with a second shaft hole 143, the supporting shaft 310 is disposed through the second shaft hole 143, and when the connecting plate 123 rotates relative to the supporting shaft 310, the detecting plate 140 is driven to rotate synchronously. The second kidney-shaped hole 141 is arc-shaped, and the center of the second kidney-shaped hole 141 coincides with the axis of the support shaft 310; the second fastening member 142 includes a bolt or a screw; when the position of the detection plate 140 connected to the connection plate 123 needs to be adjusted, the second fastening piece 142 is loosened, the detection plate 140 can rotate around the support shaft 310 relative to the connection plate 123, the relative position of the second fastening piece 142 in the second kidney-shaped hole 141 is adjusted synchronously, and when the position of the detection plate 140 meets the requirement, the second fastening piece 142 is screwed down again, so that the connection plate 123 and the detection plate 140 can be connected again, namely the detection plate 140 can rotate synchronously with the connection plate 123.

It should be noted that the principle and operation manner of adjusting the position of the mounting plate 311 disposed on the winch 010 by the third fastening member 313 and the third kidney-shaped hole 312 and adjusting the position of the bracket 124 disposed on the connecting plate 123 by the first fastening member 125 and the first kidney-shaped hole 126 are similar to the above-mentioned adjusting the connecting position of the detection plate 140 and the connecting plate 123 by the second fastening member 142 and the second kidney-shaped hole 141, and the description thereof is omitted.

The number of the second kidney-shaped holes 141 and the second fastening pieces 142 can be selected according to the requirement; in this embodiment, two second kidney-shaped holes 141 and two second fastening members 142 are provided, and the two second kidney-shaped holes 141 and the two second fastening members 142 are fitted in one-to-one correspondence, and the two second kidney-shaped holes 141 are distributed around the circumferential direction of the support shaft 310. In other embodiments, the number of the second kidney-shaped holes 141 and the second fastening members 142 may also be one, three, etc.

Referring to fig. 2, the detecting plate 140 of the present embodiment includes a connecting portion 144 and a detecting portion 145 connected to the connecting portion 144, the second kidney-shaped hole 141 and the second shaft hole 143 are opened in the connecting portion 144, and the detecting portion 145 is used for cooperating with the detecting device 200. The connection mode of the connection part 144 and the detection part 145 can be selected as required; in this embodiment, the connecting portion 144 and the detecting portion 145 are integrally formed, and the detecting portion 145 may be regarded as a portion extending from the connecting portion 144; in other embodiments, the connection between the connection portion 144 and the detection portion 145 may be welding, clamping, or the like.

Referring to fig. 2 and 5, the detecting device 200 of the present embodiment includes a fixing plate 210 and a detecting switch 220 disposed on the fixing plate 210, the fixing plate 210 is fixedly disposed on the supporting shaft 310, the detecting plate 140 is disposed between the connecting plate 123 and the fixing plate 210, and the detecting plate 140 cooperates with the detecting switch 220 to detect the rope unwinding allowance of the winch 010.

When only the innermost layer is left on the drum 400 of the winch 010 and the steel wire rope of the innermost layer is more than or equal to three turns, or the number of the steel wire rope layers on the drum 400 of the winch 010 is more than 1, the rope pressing mechanism 120 is always pressed on the steel wire rope of the winch 010 under the action of the elastic member 110, at this time, the rope pressing mechanism 120 and the detection device 200 have a first matching state, and the detection part 145 of the detection plate 140 at least partially shields the detection switch 220, so that the detection switch 220 outputs a first detection signal; when only the innermost layer of the drum 400 of the winch 010 remains and the steel wire rope of the innermost layer is less than three turns, the rope pressing mechanism 120 presses on the drum 400 under the elastic action of the elastic member 110 instead of pressing on the steel wire rope, at this time, the rope pressing mechanism 120 and the detection device 200 have a second matching state, and the detection portion 145 of the detection plate 140 does not shield the detection switch 220, so that the detection switch 220 outputs a second detection signal.

It should be noted that, in other embodiments, the detection device 200 may further include a fixing plate 210 and a sensor disposed on the fixing plate 210, which are connected to each other, for example: optical sensors, and the like.

It should be noted that the detection switch 220 can be electrically connected to the controller, so that the detection signal output by the detection switch 220 is transmitted to the controller, and the controller determines the rope unwinding allowance of the winch 010 according to the received detection signal; further, the controller can also be electrically connected with an alarm device, such as: a buzzer and the like, wherein when the controller receives the second detection signal, the controller judges that the steel wire rope of the winch 010 is less than three turns and controls the alarm device to report; correspondingly, when the controller receives the first detection signal, the steel wire rope of the winch 010 is judged to be more than three turns, and an alarm device does not need to be controlled to give an alarm.

In other embodiments, the controller may also be electrically connected to a display, etc. to detect that the detection result is visually displayed on the display.

The electrical connection includes an electrical connection by a cable, an electrical connection through a wireless network, and the like.

The working principle of the three-ring protector 020 provided by the embodiment comprises the following steps:

the rope pressing mechanism 120 rotatably provided to the support shaft 310 can stably press the wire rope wound around the drum 400 of the winding 010 by the elastic member 110.

When only the innermost layer of the drum 400 of the winch 010 remains and the steel wire rope of the innermost layer is more than or equal to three turns, or the number of the steel wire rope layers on the drum 400 of the winch 010 is more than 1, the rope pressing mechanism 120 is always pressed on the steel wire rope of the winch 010 under the action of the elastic member 110, and the detection switch 220 is at least partially shielded by the detection part 145 of the detection plate 140, so that the detection switch 220 outputs a first detection signal; when only the innermost layer of the drum 400 of the winch 010 remains and the steel wire rope of the innermost layer is less than three turns, the rope pressing mechanism 120 presses on the drum 400 under the elastic action of the elastic member 110 instead of pressing on the steel wire rope, and the detection portion 145 of the detection plate 140 does not shield the detection switch 220, so that the detection switch 220 outputs a second detection signal.

To sum up, the utility model discloses three ring protector 020, hoist engine and hoist of embodiment can set up three ring protector 020 in the outside of hoist 010, can not only detect the surplus of putting the rope of hoist 010, the maintenance of the three ring protector 020 of still being convenient for.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-ring protector is characterized by comprising a rope pressing device, a detection device and a fixing device, wherein the fixing device comprises a support shaft which can be arranged on a winch and is positioned on the outer side of the winch; the detection device is fixedly arranged on the supporting shaft; the rope pressing device comprises an elastic piece and a rope pressing mechanism, and the rope pressing mechanism is rotatably connected with the supporting shaft and can be matched with the detection device; the elastic piece is connected between the supporting shaft and the rope pressing mechanism and is configured to enable the rope pressing mechanism to always have a tendency of pressing the winch.

2. The three-turn protector according to claim 1, wherein the rope pressing mechanism comprises a connecting component and a roller, the roller is rotatably arranged on the connecting component, the connecting component is rotatably connected with the supporting shaft, the elastic component is connected between the connecting component and the supporting shaft, and the elastic component is configured to enable the connecting component to drive the roller to always have a tendency of pressing the winch.

3. A three-turn protector according to claim 2 wherein the connecting assembly includes a connecting plate and a bracket connected to each other, the roller is rotatably connected to the bracket, the connecting plate is rotatably connected to the support shaft, and the resilient member is connected to the connecting plate and the support shaft.

4. A three-turn protector according to claim 3 wherein the connection assembly further comprises a first fastener, the connection plate and the bracket are connected by the first fastener, and one of the connection plate and the bracket defines a first kidney-shaped aperture, the first fastener engaging the first kidney-shaped aperture.

5. The three-turn protector according to claim 2, wherein the rope pressing mechanism further comprises a base, the base is fixedly connected with the supporting shaft, one end of the elastic member is connected with the connecting assembly, and the other end of the elastic member is connected with the supporting shaft through the base.

6. A three-turn protector according to claim 2 wherein the tether mechanism further includes a sensing plate fixedly connected to an end of the connecting member remote from the roller, the sensing plate being rotatably connected to the support shaft, the sensing plate being engageable with the sensing device.

7. A three-turn protector according to claim 6, characterised in that the detection plate is provided with a second kidney-shaped hole, and the end of the connecting member remote from the roller is provided with a second fastening member which is matched with the second kidney-shaped hole.

8. A three-turn protector according to claim 1, characterised in that the fixing means further comprises a mounting plate, the support shaft being connected to the mounting plate, the mounting plate being connectable to the winch; and/or the presence of a gas in the gas,

the mounting plate is provided with a third waist-shaped hole, the third waist-shaped hole is used for arranging a third fastener, and the third fastener can be connected with the winch.

9. A hoisting machine comprising a hoist and a three-turn protector according to any one of claims 1 to 8 provided to the hoist.

10. A crane comprising a three-turn protector as claimed in any one of claims 1 to 8 or a hoist as claimed in claim 9.