CN220596877U - Traction device and lifting equipment - Google Patents

Abstract

The utility model relates to the technical field of lifting systems, and provides a traction device and lifting equipment, wherein the traction device comprises: the device comprises a bearing main body, a winding drum, a traction rope and a driving assembly; the bearing main body is provided with a containing cavity, the winding drum is arranged in the containing cavity, and the driving assembly is fixed on the bearing main body; the traction rope is provided with a fixed end and a free end, wherein the fixed end is fixed at any one end of the winding drum, and the free end is connected with a traction piece; the driving component is in transmission connection with the winding drum and is suitable for driving the winding drum to rotate so as to drive the towed piece to lift and move. According to the utility model, the fixed end of the traction rope is fixed at any end of the winding drum, the free end of the traction rope is connected with the towed piece, the traction rope is in a tensioning state under the action of gravity of the towed piece, the lifting equipment can be prevented from adopting a closed loop rope winding mode, and the tensioning device provided by the lifting equipment for the traction rope can be omitted, so that the structure of the lifting equipment is simplified.

Description

Traction device and lifting equipment

Technical Field

The utility model relates to the technical field of lifting systems, in particular to a traction device and lifting equipment.

Background

The lifting system is widely used for lifting and descending various self-elevating platforms, such as a self-elevating drilling platform, a wind power installation platform, salvaging, drilling, piling, stone throwing leveling and other construction work platforms.

In the related art, a lifting device for a wind power installation platform comprises a supporting body, a vehicle body component and a traction device, wherein the traction device is arranged on the supporting body, the vehicle body component is connected to the traction device, and the vehicle body component is driven to lift along the supporting body through the traction device.

The traction device adopts a double-drive control mode, namely the head and the tail of the traction rope are connected to form a closed-loop structure, the vehicle body component is fixed on the traction rope, and the traction rope is in transmission fit with the driving wheel. When the driving assembly works to drive the driving wheel to rotate, the traction rope and the driving wheel are driven by the action of static friction force.

The reliability of the lifting device is affected by the friction coefficient between the traction rope and the driving wheel and the positive pressure between the traction rope and the driving wheel. Therefore, when the oil content of the traction rope is high, the traction rope is liable to slip phenomenon to affect the running of the vehicle body component.

In addition, when the haulage rope is used for a period of time, the length of the haulage rope can change structurally, so that the haulage rope is loosened, or a loose and tight situation occurs, and for this purpose, a plurality of tensioning devices are arranged on the lifting equipment and on the movement path of the haulage rope, so that the problem that the haulage rope is loosened, or the problem that the haulage rope is loose and tight occurs is solved. But set up a plurality of overspeed devices tensioner, not only increased the manufacturing cost of lifting device, made lifting device's structure more complicated moreover, be inconvenient for lifting device's installation and maintenance.

Disclosure of Invention

The utility model provides a traction device and lifting equipment, which are used for solving at least one technical defect in the prior art, a car body component is hung on a winding drum, the traction rope is in a tensioning state under the action of gravity of the car body component, the operation stability is good, and the phenomenon that the car body component slips when in operation can be avoided by adopting a closed loop rope winding mode by the lifting equipment; meanwhile, a tensioning device provided by the lifting equipment for the traction rope can be omitted, so that the structure of the lifting equipment is simplified.

In order to achieve the above object, a first aspect of the present utility model provides a traction device applied to a lifting apparatus, including:

the device comprises a bearing main body, a winding drum, a traction rope and a driving assembly;

the bearing main body is provided with a containing cavity, the winding drum is arranged in the containing cavity, and the driving assembly is fixed on the bearing main body;

the traction rope is provided with a fixed end and a free end, the fixed end is fixed at any one end of the winding drum, and the free end is connected with a traction piece;

the driving assembly is in transmission connection with the winding drum and is suitable for driving the winding drum to rotate so as to drive the towed piece to lift and move.

Optionally, the traction device further comprises a rope-loosening detection mechanism adapted to detect a slack state of the traction rope.

Optionally, the rope loosening detection mechanism includes:

the first rope pressing assembly is rotatably arranged on the bearing main body and is in contact with a traction rope which is not wound on the outer circumferential surface of the winding drum, and the first rope pressing assembly has a tendency of rotating towards the outer circumferential surface of the winding drum;

the first trigger piece is arranged on the bearing main body and is coaxially arranged with the first rope pressing component so as to rotate along with the first rope pressing component;

the first elastic component is connected with the first trigger piece and the bearing main body;

the first trigger switch is arranged on the first trigger piece, when the traction rope is in a loose state, the first rope pressing assembly rotates towards the outer circumferential surface of the winding drum and drives the first trigger piece to trigger the first trigger switch, so that the driving assembly stops running.

Optionally, the first rope pressing component comprises a first rope contact adapting piece and a first rope contact roller set, the first rope contact roller set is eccentrically connected with the first rope contact adapting piece, the first rope contact roller set is contacted with the traction rope, and the first rope contact adapting piece is rotationally connected with the bearing main body.

Optionally, the first rope touch roller set includes a first rope touch roller and a first rotating shaft;

the diameter of the first rope contact roller is larger than that of the first rotating shaft, the first rope contact roller is in contact with the traction rope, and the first rotating shaft is arranged on the bearing main body and is coaxially arranged with the first triggering piece.

Optionally, the traction device further comprises a rope stacking detection mechanism, and the rope stacking detection mechanism is suitable for detecting the rope stacking state of the traction rope.

Optionally, the rope stacking detection mechanism includes:

the second rope pressing assembly is rotatably arranged on the bearing main body, is in contact with the traction rope wound on the outer circumferential surface of the winding drum, and has a tendency of rotating towards the outer circumferential surface of the winding drum;

the second trigger piece is arranged on the bearing main body and is coaxially arranged with the second rope pressing assembly so as to rotate along with the second rope pressing assembly;

the second elastic component is connected with the second trigger piece and the bearing main body;

the second trigger switch is arranged on the second trigger piece, when the traction rope is in a rope stacking state, the second rope pressing assembly rotates in a direction away from the outer circumferential surface of the winding drum and drives the second trigger piece to trigger the second trigger switch, so that the driving assembly stops running.

Optionally, the second rope pressing component comprises a second rope contact adapting piece and a second rope contact roller set, the second rope contact roller set is eccentrically connected with the second rope contact adapting piece, the second rope contact roller set is contacted with the traction rope, and the second rope contact adapting piece is rotationally connected with the bearing main body.

Optionally, the second rope touch roller set includes a second rope touch roller and a second rotating shaft;

the diameter of the second rope contact roller is larger than that of the second rotating shaft, the second rope contact roller is in contact with the traction rope, and the second rotating shaft is arranged on the bearing main body and is coaxially arranged with the second triggering piece.

In a second aspect, the utility model provides a lifting device comprising a traction apparatus as defined in any one of the preceding claims.

The above-described one or more embodiments of the present utility model have at least the following advantageous effects:

according to the traction device, the fixed end of the traction rope is fixed at any one end of the winding drum, and the free end of the traction rope is connected with a traction piece. When the driving component drives the winding drum to rotate, the winding drum drives the towed piece to move by winding and unwinding the towing rope, and the towing rope is always in a tensioned state under the action of the gravity of the towed piece. Therefore, the lifting equipment has good running stability, and can avoid slipping when the traction piece runs due to the closed loop rope winding mode of the lifting equipment; simultaneously, can cancel original lifting device and provide overspeed device tensioner for haulage rope to simplify lifting device's structure, not only be convenient for lifting device's installation and maintenance, can reduce lifting device's manufacturing cost moreover.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of a traction device provided by an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a partial structure of a traction device according to an embodiment of the present utility model;

FIG. 3 is a partial cross-sectional view of a slack rope detection mechanism in a traction device provided by an embodiment of the present utility model;

fig. 4 is a schematic diagram of a partial structure of a rope-loosening detection mechanism in a traction device according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a first resilient assembly in a traction device provided in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic view of the structure of a carrying body in a traction device according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of a partial structure of a rope stacking detection mechanism in a traction device according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a partial structure of a rope stacking detection mechanism in a traction device according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a second resilient assembly in a traction device provided in accordance with an embodiment of the present utility model;

fig. 10 is a schematic diagram of a part of a traction device according to a second embodiment of the present utility model.

Reference numerals:

100. a carrying body; 101. a first mount; 102. a second mounting base; 103. a fixing plate; 1031 1032, shaft holes; 110. a receiving chamber 110;

200. a reel;

300. a rope loosening detection mechanism; 301. a first rope roller; 302. a first drive shaft; 303. a first swing arm; 304. a first trigger; 305. a first rotating shaft; 306. a first trigger switch; 311. a screw; 312. a bearing; 313. a fastening screw; 314. a nut; 315. a flat key;

400. a second elastic component; 401. a second bracket; 402. a second push rod; 403. a second compression spring; 404. a second briquetting; 411. a step bolt; 412. a nut; 413. a second bolt; 414. a bolt; 415. a second threaded port;

500. a rope overlapping detection mechanism; 501. a second rope roller; 502. a second drive shaft; 503. a second swing arm; 504. a second trigger; 505. a second rotating shaft; 506. a second trigger switch; 511. a screw; 512. a bearing; 513. a fastening screw; 514. a nut; 515. a flat key;

600. a first elastic component; 601. a first bracket; 602. a first push rod; 603. a first compression spring; 604. a first briquette; 611. a step bolt; 612. a nut; 613. a first bolt; 614. a bolt; 615. a first threaded port;

700. a traction rope;

800. and a drive assembly.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.

In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The utility model provides a traction device and lifting equipment, and the traction device (hereinafter referred to as traction device) of the lifting equipment is described below.

As shown in fig. 1 and 2, an embodiment of the present utility model provides a traction device, which is applied to a lifting apparatus, including: the device comprises a bearing main body 100, a winding drum 200, a traction rope 700 and a driving assembly 800. The carrying body 100 is provided with a receiving cavity 110, the winding drum 200 is disposed in the receiving cavity 110, and the driving assembly 800 is fixed to the carrying body 100.

As the mounting body of the spool 200 and the driving assembly 800, the bearing body 1OO may include a plurality of side plates, a bottom plate and a top plate, which are a left side plate, a right side plate, a front side plate and a rear side plate, respectively, which are connected to each other to enclose the accommodating chamber 11O.

The traction rope 700 has a fixed end fixed to either end of the spool 200 and a free end connected to a towed piece (not shown). The driving assembly 800 is in transmission connection with the winding drum 200 and is suitable for driving the winding drum 200 to rotate so as to drive the towed piece to move up and down. The traction object may be, for example, a climbing-free car body, an elevator car, or the like, and is not specifically limited or described herein.

When the traction device provided by the embodiment of the utility model operates, the driving assembly 800 is controlled to work so as to drive the winding drum 200 to rotate, the traction rope 700 is wound or unwound, and the traction rope 700 is wound or unwound so as to perform lifting movement. It will be appreciated that the present utility model connects the free end of the traction rope 700 to the towed element by securing the fixed end of the traction rope 700 to either end of the spool 200. When the driving assembly 800 drives the winding drum 200 to rotate, the towed piece is hung on the winding drum 200 through the towing rope 700, the towed piece is always in a tensioned state under the action of gravity of the towed piece, the operation stability is good, and the phenomenon that the towed piece slips when in operation can be avoided by adopting a closed loop rope winding mode by lifting equipment. Meanwhile, the tensioning device provided by the original lifting equipment for the traction rope 700 can be omitted, so that the structure of the lifting equipment is simplified, the lifting equipment is convenient to install and maintain, and the production cost of the lifting equipment can be reduced.

Because both ends of the traction rope 700 are respectively arranged on the winding drum 200 and the traction piece, both ends of the traction rope 700 are not connected, namely, the traction rope 700 is in a tensioned state under the action of gravity of the traction piece by adopting an open loop rope winding mode, and the problem that the traction rope 700 is loose or loose is solved is avoided. The traction rope 700 is matched with the driving assembly 800 to realize single-drive rigid traction so as to replace double-drive traction in which the lifting equipment is arranged in a closed loop mode in the related art, so that the problem that the traction rope 700 needs to be provided with a tensioning device is solved; and when the oil content of the traction rope is high, the traction rope is easy to slip so as to influence the operation of the lifting equipment.

As shown in fig. 2, in some embodiments of the present utility model, the traction device further includes a slack rope detection mechanism 300, and the slack rope detection mechanism 300 is adapted to detect a slack state of the traction rope 700 and to feed back the detected information to a control system of the lifting apparatus, through which the operation of the drive assembly 800 is controlled.

As shown in fig. 3-5, in some embodiments of the present utility model, the slack rope detection mechanism 300 includes a first compression rope assembly, a first trigger 304, a first resilient assembly 600, and a first trigger switch 306.

Wherein, the first rope pressing assembly is rotatably provided to the bearing body 1OO, and the first rope pressing assembly is in contact with the traction rope 700 which is not wound on the outer circumferential surface of the drum 200, and the first rope pressing assembly has a tendency to rotate toward the outer circumferential surface of the drum 200. The first trigger piece 304 is disposed on the carrier body 1OO and coaxially disposed with the first rope pressing assembly, so as to rotate with the first rope pressing assembly. The first elastic member 600 is connected to the first trigger 304 and the carrier body 100, and the elastic force of the first elastic member 600 acts on the first rope pressing member through the first trigger 304, so that the first rope pressing member has a tendency to rotate toward the outer circumferential surface of the spool 200. The first trigger switch 306 is disposed on the movement path of the first trigger 304.

The first elastic member 600 may be a spring plate, a spring, a torsion spring, which are well known to those skilled in the art, and is not specifically limited herein.

The first trigger switch 306 may employ a position sensor or an angle sensor, which are well known in the art, and the angle sensor is disposed on the rotating shaft of the first trigger member 304, and the position sensor is disposed on a corresponding position of the first trigger member 304.

When the first trigger switch 306 is a position sensor, the position sensor may be a contact sensor or a proximity sensor, and the position of the first trigger member 304 is detected by the position sensor and converted into an output signal to be fed back to a control system of the lifting device, so as to perform closed-loop control on a driving system of the lifting device, so that an electric linkage feedback function of the driving device is realized, the lifting device is enabled to operate more accurately, and the safety is higher.

When the position sensor is a touch sensor, the touch sensor may include a travel switch, a two-dimensional matrix position sensor, or the like. The position sensor is disposed on the moving path of the first trigger 304, and when the first trigger 304 moves, the position sensor touches the travel switch, and the travel switch slightly contacts the inside, thereby completing the control.

When the position sensor is a proximity sensor, the proximity sensor may include an electromagnetic type, a photoelectric type, a differential transformer type, an eddy current type, a capacitance type, a reed switch, a hall type, or the like, and the proximity sensor does not need to be in contact with the first trigger 304, and a switch for sending an "action" signal when the first trigger 304 approaches the proximity sensor to a set distance, thereby completing the control.

When the traction rope 300 is in a tensioning state, the moment of the traction rope 700 on the first rope pressing component is smaller than the moment of the first elastic component 600 on the first rope pressing component, so that the traction rope 300 on the winding drum 200 is normally wound and unwound.

When the traction rope 700 is loosened, the moment of the traction rope 700 which is not wound on the outer circumferential surface of the winding drum 200 to the first rope pressing component is smaller than the moment of the first elastic component 600 to the first rope pressing component, the first rope pressing component rotates towards the outer circumferential surface of the winding drum 200, the first trigger piece 304 triggers the first trigger switch 306, and the first trigger switch 306 outputs a signal to a control system of the lifting device so as to enable the driving component 800 to stop running, and the running safety of the lifting device is ensured.

In some embodiments of the present utility model, the first rope pressing assembly includes a first rope contact adapter and a first rope contact roller set, the first rope contact roller set is eccentrically connected with the first rope contact adapter, the first rope contact roller set is contacted with the traction rope 700, and the first rope contact adapter is rotatably connected with the bearing body 1 OO.

As shown in fig. 3, in some embodiments of the utility model, the first set of touch-rope rollers includes a first touch-rope roller 301 and a first shaft 305. The diameter of the first rope roller 301 is larger than the diameter 305 of the first rotating shaft, and the first rope roller and the first rotating shaft can be connected through a bearing 312. The first contact roller 301 is in contact with the traction rope 700, the first rotation shaft 305 is provided to the carrier body 100, and the first trigger 304 is coaxially provided. In the rope-releasing state, the first trigger 304 may rotate the first shaft 305 toward the outer circumferential surface of the spool 200. The first touch wire roller 301 may rotate about the first rotation axis 305 when in contact with the traction wire 700, thereby reducing friction between the first touch wire roller 301 and the traction wire 700.

As shown in fig. 3 and 6, in some embodiments of the present utility model, the first contact rope adapter includes a first swing arm 303 and a first transmission shaft 302. The first transmission shaft 302 is rotatably disposed on the bearing body 100, specifically, as shown in fig. 6 and 10, the bearing body 100 may be provided with a first mounting seat 101 and a fixing plate 103, the first mounting seat 101 is provided with a shaft hole, the fixing plate 103 is provided with a shaft hole 1031, and two ends of the first transmission shaft 302 respectively pass through the shaft hole on the first mounting seat 101 and the shaft hole 1031 on the fixing plate 103. The first transmission shaft 302 is fixedly connected with the first trigger member 304 and can rotate along with the first trigger member 304. The first swing arm 303 is fixedly connected with two ends of the first rotating shaft 305 through a screw 311, and the first swing arm 303 can be fixedly connected with the first transmission shaft 302 through a flat key 315, a fastening screw 313 and a nut 314.

As shown in fig. 5, in some embodiments of the present utility model, the first elastic assembly 600 may include a first bracket 601, a first push rod 602, a first compression spring 603, a first pressing block 604, and a first bolt 613. The first push rod 602 is connected with the first support 601 in a telescopic manner, a first threaded opening 615 is formed in one end of the first support 601, the first bolt 613 is screwed into the first threaded opening 615 to be abutted with the first pressing block 604, and the first pressure spring 603 is clamped between the first pressing block 604 and the first push rod 602. The first push rod 602 is fixedly connected with the first trigger piece 304 through the step bolt 611 and the nut 612, and when the first pressure spring 603 pushes the first push rod 602 to extend or retract, the first push rod 602 can drive the first trigger piece 304 to rotate. The first bracket 601 may be fixed to the carrier body 100 by bolts 614.

In the rope-releasing state, the moment of the traction rope 700, which is not wound on the outer circumferential surface of the winding drum 200, on the first rope touch roller 301 is smaller than the moment of the first pressure spring 603, and at this time, the first pressure spring 603 can push the first push rod 602 to extend, so as to drive the first trigger piece 304 to rotate. The first trigger 304 is provided with a circular hole, and the first trigger switch 306 may be disposed in the circular hole, so that the first push rod 602 will trigger the first trigger switch 306 to act when pushing the first trigger 304 to rotate.

As shown in fig. 2, in some embodiments of the present utility model, the traction device further includes a rope stacking detection mechanism 500, and the rope stacking detection mechanism 500 is adapted to detect a rope stacking state of the traction rope 700 and feed back detection information to a control system of the lifting apparatus. The rope-overlapping state refers to a state in which the pulling rope 700 is abnormally wound, for example, the pulling rope 700 is tangled. The driving assembly 800 is controlled to operate by the control system, so that the operation can be stopped when the winding state of the traction rope 700 is abnormal (such as rope disorder), and the operation safety of the lifting equipment is ensured.

As shown in fig. 7-8, in some embodiments of the present utility model, the roping detection mechanism 500 includes a second roping arrangement, a second trigger 504, a second elastic arrangement 400, and a second trigger switch 506.

Wherein a second rope pressing assembly is rotatably provided to the carrier body 1OO, the second rope pressing assembly being in contact with the traction rope 700 wound around the outer circumferential surface of the drum 200, the second rope pressing assembly having a tendency to rotate toward the outer circumferential surface of the drum 200, thereby pressing the traction rope 700 wound around the outer circumferential surface of the drum 200 against the outer circumferential surface of the drum 200. The second triggering piece 504 is disposed on the carrier body 100 and is coaxially disposed with the second rope pressing assembly, so as to rotate along with the second rope pressing assembly. The second elastic member 400 is coupled to the second triggering member 504 and the carrier body 100, and an elastic force of the second elastic member 400 acts on the second pressing string member through the second triggering member 504, so that the second pressing string member has a tendency to rotate toward the outer circumferential surface of the spool 200. The second trigger switch is disposed on the movement path of the second trigger 504.

The second elastic component 400 may be a spring plate, a spring, a torsion spring, which are well known to those skilled in the art, and is not specifically limited herein. The second trigger switch 506 may employ a position sensor or an angle sensor, which are well known in the art, and the angle sensor is disposed on the rotating shaft of the second trigger 504, and the position sensor is disposed on the corresponding position of the second trigger 504.

When the second trigger switch 506 is a position sensor, the position sensor may be a contact sensor or a proximity sensor, and the position of the second trigger member 504 is detected by the position sensor and converted into an output signal to be fed back to the control system of the lifting device, so as to perform closed-loop control on the driving system of the lifting device, so that the driving device is electrically linked and fed back, and the lifting device is enabled to operate more accurately and have higher safety.

When the position sensor is a touch sensor, the touch sensor may include a travel switch, a two-dimensional matrix position sensor, or the like. The position sensor is disposed on the movement path of the second trigger 504, and when the second trigger 504 moves, the position sensor hits the travel switch, and the travel switch slightly contacts the inside, thereby completing the control.

When the position sensor is a proximity sensor, the proximity sensor may include an electromagnetic type, a photoelectric type, a differential transformer type, an eddy current type, a capacitance type, a reed pipe, a hall type, or the like, and the proximity sensor does not need to be in contact with the second triggering member 504, and a switch for sending an "action" signal when the second triggering member 504 approaches the proximity sensor to a set distance, thereby completing the control.

During the process of winding the traction rope 700 on the winding drum 200, as the number of layers of winding the traction rope 700 increases, the traction rope 700 can push the second rope pressing assembly to rotate in a direction away from the outer circumferential surface of the winding drum 200, so as to drive the second triggering piece 504 to rotate. When the number of layers of the traction rope 700 wound on the winding drum is too large or the rope disorder occurs, the traction rope 700 jacks up the second rope pressing assembly to rotate, so that the second trigger piece 504 is driven to rotate to trigger the second trigger switch 506, the second trigger switch 506 outputs a signal to a control system of the lifting equipment, and the control system controls the driving assembly 800 to stop running, so that the running safety of the lifting equipment is ensured.

In some embodiments of the present utility model, the second rope pressing assembly includes a second rope contact adapter and a second rope contact roller set, the second rope contact roller set is eccentrically connected with the second rope contact adapter, the second rope contact roller set is contacted with the traction rope 700, and the second rope contact adapter is rotatably connected with the bearing body 1 OO.

As shown in fig. 7 and 8, in some embodiments of the present utility model, the second set of cord-contacting rollers includes a second cord-contacting roller 501 and a second rotating shaft 505. The diameter of the second rope roller 501 is larger than the diameter 505 of the second rotating shaft, and the second rope roller and the second rotating shaft can be connected through a bearing 512. The second rope roller 501 is in contact with the traction rope 700, and the second rotating shaft 505 is provided on the carrying body 100 and is coaxially disposed with the second triggering piece 504. In the rope stacking state, the second rope contacting roller 501 may drive the second rotating shaft 505 to rotate in a direction away from the outer circumferential surface of the spool 200, so as to drive the second triggering member 504 to rotate, and trigger the second detection switch 505. The second touch wire roller 501 may rotate about the second rotation axis 505 when in contact with the traction wire 700, thereby reducing friction between the second touch wire roller 501 and the traction wire 700.

As shown in fig. 6 and 7, in some embodiments of the present utility model, the second contact rope adapter includes a second swing arm 503 and a second transmission shaft 502. The second transmission shaft 502 is rotatably disposed on the bearing body 100, specifically, as shown in fig. 6 and 10, the bearing body 1OO may be provided with a second mounting seat 102 and a fixing plate 103, the second mounting seat 102 is provided with a shaft hole, the fixing plate 103 is provided with a shaft hole 1032, and two ends of the second transmission shaft 502 respectively pass through the shaft hole on the second mounting seat 102 and the shaft hole 1032 on the fixing plate 103. The second transmission shaft 502 is fixedly connected with the second triggering element 504 and can rotate along with the second triggering element 504. The second swing arm 503 is fixedly connected with two ends of the second rotating shaft 505 through a screw 511, and the second swing arm 503 can also be fixedly connected with the second transmission shaft 502 through a flat key 515, a fastening screw 513 and a nut 514.

As shown in fig. 9, in some embodiments of the present utility model, the second elastic assembly 400 may include a second bracket 401, a second push rod 402, a second compression spring 403, a second pressing block 404, and a second bolt 413. The second push rod 402 is connected with the second support 401 in a telescopic manner, a second threaded port 415 is formed in one end of the second support 401, a second bolt 413 is screwed into the second threaded port 415 to be abutted against the second pressing block 404, and a second pressure spring 403 is clamped between the second pressing block 404 and the second push rod 402. The second push rod 402 is fixedly connected with the second triggering piece 504 through the step bolt 411 and the nut 412, and when the second pressure spring 403 pushes the second push rod 402 to extend or retract, the second push rod 402 can drive the second triggering piece 504 to rotate. The second bracket 401 may be fixed to the carrier body 100 by bolts 414.

In the rope stacking state, the traction rope 700 wound on the outer circumferential surface of the winding drum 200 jacks up the second rope contact roller 501, so that the second transmission shaft 502 is driven to rotate, the second trigger piece 504 is driven to rotate, and at the moment, the second push rod 402 contracts, and the second pressure spring 403 is compressed. In the process of switching the traction rope 700 from the rope stacking state to the normal state, the second pressure spring 403 can push the second push rod 402 to extend, drive the second trigger piece 504 to rotate, and further drive the second transmission shaft 502 to rotate, so that the second rope contact roller 501 is pressed against the traction rope 700 wound on the outer circumferential surface of the winding drum 200.

On the other hand, the utility model also provides lifting equipment, which comprises the traction device in any embodiment.

It should be noted that, the technical solutions in the embodiments of the present utility model may be combined with each other, but the basis of the combination is based on the fact that those skilled in the art can realize the combination; when the combination of the technical solutions contradicts or cannot be realized, it should be considered that the combination of the technical solutions does not exist, i.e. does not fall within the scope of protection of the present utility model.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A traction device for use with lifting equipment, comprising:

the device comprises a bearing main body, a winding drum, a traction rope and a driving assembly;

the bearing main body is provided with a containing cavity, the winding drum is arranged in the containing cavity, and the driving assembly is fixed on the bearing main body;

the traction rope is provided with a fixed end and a free end, the fixed end is fixed at any one end of the winding drum, and the free end is connected with a traction piece;

the driving assembly is in transmission connection with the winding drum and is suitable for driving the winding drum to rotate so as to drive the towed piece to lift and move.

2. The traction device of claim 1, further comprising a slack rope detection mechanism adapted to detect a slack condition of the traction rope.

3. The traction device of claim 2, wherein the slack rope detection mechanism comprises:

the first rope pressing assembly is rotatably arranged on the bearing main body and is in contact with a traction rope which is not wound on the outer circumferential surface of the winding drum, and the first rope pressing assembly has a tendency of rotating towards the outer circumferential surface of the winding drum;

the first trigger piece is arranged on the bearing main body and is coaxially arranged with the first rope pressing component so as to rotate along with the first rope pressing component;

the first elastic component is connected with the first trigger piece and the bearing main body;

the first trigger switch is arranged on the first trigger piece, when the traction rope is in a loose state, the first rope pressing assembly rotates towards the outer circumferential surface of the winding drum and drives the first trigger piece to trigger the first trigger switch, so that the driving assembly stops running.

4. The traction device of claim 3, wherein the first rope pressing assembly comprises a first rope contact adapter and a first rope contact roller set, the first rope contact roller set being eccentrically connected to the first rope contact adapter, the first rope contact roller set being in contact with the traction rope, the first rope contact adapter being rotatably connected to the load bearing body.

5. The traction device of claim 4, wherein the first set of rope rollers comprises a first rope roller and a first shaft;

the diameter of the first rope contact roller is larger than that of the first rotating shaft, the first rope contact roller is in contact with the traction rope, and the first rotating shaft is arranged on the bearing main body and is coaxially arranged with the first triggering piece.

6. The traction device of claim 1, further comprising a roping detection mechanism adapted to detect a roping condition of the traction rope.

7. The traction device of claim 6, wherein the roping detection mechanism comprises:

the second rope pressing assembly is rotatably arranged on the bearing main body, is in contact with the traction rope wound on the outer circumferential surface of the winding drum, and has a tendency of rotating towards the outer circumferential surface of the winding drum;

the second trigger piece is arranged on the bearing main body and is coaxially arranged with the second rope pressing assembly so as to rotate along with the second rope pressing assembly;

the second elastic component is connected with the second trigger piece and the bearing main body;

the second trigger switch is arranged on the second trigger piece, when the traction rope is in a rope stacking state, the second rope pressing assembly rotates in a direction away from the outer circumferential surface of the winding drum and drives the second trigger piece to trigger the second trigger switch, so that the driving assembly stops running.

8. The traction device of claim 7, wherein the second rope pressing assembly comprises a second rope contact adapter and a second rope contact roller set, the second rope contact roller set being eccentrically connected to the second rope contact adapter, the second rope contact roller set being in contact with the traction rope, the second rope contact adapter being rotatably connected to the load bearing body.

9. The traction device of claim 8, wherein the second set of rope rollers includes a second rope roller and a second shaft;

the diameter of the second rope contact roller is larger than that of the second rotating shaft, the second rope contact roller is in contact with the traction rope, and the second rotating shaft is arranged on the bearing main body and is coaxially arranged with the second triggering piece.

10. Lifting device, characterized in that it comprises a traction means according to any one of claims 1-9.