CN115072601A - Method for electrically lifting gravity free-fall type winch - Google Patents
Method for electrically lifting gravity free-fall type winch Download PDFInfo
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- CN115072601A CN115072601A CN202210682868.9A CN202210682868A CN115072601A CN 115072601 A CN115072601 A CN 115072601A CN 202210682868 A CN202210682868 A CN 202210682868A CN 115072601 A CN115072601 A CN 115072601A
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- main shaft
- winch
- bolt
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005484 gravity Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention provides a method for electrically lifting a gravity free-fall type winch, which comprises the following steps: sending a command to a power system; the power system drives the rope pulley of the winch to rotate forward, the traction steel wire rope on the rope pulley lifts the suspended object to a target height, and the suspended object hovers; or the power system drives the rope wheel of the winch to rotate reversely, and the suspension on the steel wire rope is dragged to fall freely. The connection or disconnection of the bolt and the rope wheel is realized through the overrunning clutch, after the bolt is pulled out, the rope wheel can rotate randomly, and a suspended object hung by a traction steel wire rope on the rope wheel falls freely.
Description
Technical Field
The invention belongs to the field of mine car driving safety, and particularly relates to a method for electrically lifting a gravity free-fall type winch.
Background
Flexible trackless rubber-tyred car stall interception system need pack up and fall the interception net when intercepting the stall vehicle, specifically is:
when the interception net needs to be retracted, the retraction winch can slowly and stably retract the interception net;
when a vehicle stalls and needs to be effectively intercepted, the intercepting net must fall into place quickly.
Particularly, in the stalling state of the vehicle, the falling speed of the intercepting net is directly related to whether the stalled vehicle can be successfully protected (effectively intercepted), the falling speed of the intercepting net is determined by a retracting winch, the retracting winch in the market at present is controlled by a motor, the speed of lowering the intercepting net can reach tens of seconds, and compared with the speed of the stalled vehicle, the speed still has potential safety hazards.
Disclosure of Invention
The invention aims to provide a method for electrically lifting a gravity free-falling type winch so as to overcome the technical defects.
In order to solve the technical problem, the invention provides a method for electrically lifting a gravity free-fall type winch, which comprises the following steps:
sending a command to a power system;
the power system drives the rope pulley of the winch to rotate forward, the traction steel wire rope on the rope pulley lifts the suspended object to a target height, and the suspended object hovers;
or the power system drives the rope wheel of the winch to rotate reversely, and the suspension on the steel wire rope is dragged to fall freely.
Furthermore, the winch at least comprises a power system, a main shaft is coaxially installed on an output shaft of the power system, a rope wheel, a bolt and a one-way push wheel are sequentially sleeved on the main shaft, a push rod is arranged below the one-way push wheel, the one-way push wheel intermittently rotates and stirs the push rod, the push rod drives the bolt to be inserted into or pulled out of the rope wheel, and a traction steel wire rope is wound in a wheel groove of the rope wheel;
when the bolt is pulled out, the hanging object on the steel wire rope is pulled to freely fall.
Preferably, the rope pulley is sleeved on the main shaft through a bearing, and a plurality of pin holes for inserting the pins are formed in the wheel body of the rope pulley at equal intervals along the circumferential direction.
Furthermore, the bolt is sleeved on the main shaft through a flange type linear bearing and comprises a base plate which is sleeved on the flange type linear bearing in a sliding mode, and n pins are arranged on the surface, opposite to the rope wheel, of the base plate;
a positioning plate is detachably and fixedly sleeved on the main shaft between the rope wheel and the bolt;
n through holes are formed in the positioning plate, and pins of the pins penetrate through the through holes and then fall into the pin holes;
wherein n is a positive integer.
Furthermore, a positioning sleeve is sleeved on the main shaft, an overrunning clutch is coaxially arranged on the positioning sleeve, a one-way push wheel is sleeved on the overrunning clutch and is of a disc wheel structure with a central hole, a gap is formed in the rim of the disc wheel, and the gap shifts the push rod;
a compression spring which is sleeved on the main shaft and is in a compression state is arranged between the bolt and the one-way push wheel.
Furthermore, the power system is fixed on the bottom plate, a supporting block is further arranged on the bottom plate, a round hole for the push rod to penetrate through and rotate is formed in the supporting block, two round wheels, namely a front wheel and a rear wheel, are fixedly sleeved on the push rod in a penetrating mode, the supporting block is located between the two round wheels, the front wheel is close to the bolt, and the rear wheel is intermittently placed in the notch;
the bottom plate is also provided with a side plate, the main shaft penetrates through the side plate after penetrating through the unidirectional push wheel, a bearing sleeved on the main shaft is arranged at the joint of the side plate and the main shaft, and the side plate is also provided with a hole for the push rod to penetrate through.
Furthermore, the part of the rear wheel above the push rod is embedded into the notch, the caliber of the notch is larger than the diameter of the rear wheel, a sealing plate is fixedly connected to the notch opposite to the plug pin, and the sealing plate is parallel to the rear wheel;
the notch at least comprises two opposite tangent planes, the rear wheel is positioned between the two tangent planes, the two tangent planes are respectively a first plane vertical to the sealing plate and a second inclined plane forming an obtuse included angle with the sealing plate, and the two tangent planes are connected with the sealing plate.
Further, the driving system drives the rope sheave of the winch to rotate positively, the traction steel wire rope on the rope sheave lifts the suspended object to the target height, and the suspended object hovers, and the method specifically comprises the following steps:
a pin of the bolt penetrates through the positioning plate and then falls into the pin hole, the bolt is connected with the rope pulley, the power system drives the main shaft to rotate forwards, the positioning plate drives the rope pulley to rotate synchronously, the rope pulley drives the traction steel wire rope to lift the suspended object to a target height, and the suspended object is suspended;
in the above process, the overrunning clutch is kept disengaged from the main shaft.
Further, the driving system drives the rope sheave of the winch to reversely rotate, and the suspension on the traction steel wire rope freely falls, and the system specifically comprises:
the overrunning clutch is connected with the main shaft, the power system drives the main shaft to rotate reversely, the main shaft drives the one-way push wheel to rotate, the second inclined plane in the gap of the one-way push wheel pushes the rear wheel on the push rod, the push rod is displaced, the front wheel pulls the plug pin to pull the plug pin, the plug pin is separated from the rope pulley, the rope pulley rotates freely, and the suspended object falls freely.
Furthermore, in the process of free falling of the suspended object, the main shaft keeps rotating reversely, and when the one-way push wheel rotates for a circle and the rear wheel of the push rod returns to the notch of the one-way push wheel, the pressure spring extends to extrude the bolt to fall into the rope wheel.
The invention has the following beneficial effects:
the rope wheel can rotate freely after the pin is pulled out, a traction steel wire rope on the rope wheel lifts a free falling body of a suspension object, the suspension object can be an interception net, the interception net falls to a stalled vehicle, and compared with the situation that the motor drives the falling interception net, the speed of the free falling body only needs 1-2 seconds, so that the stalled vehicle can be effectively intercepted immediately.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a flow chart of a method for electrically lifting a gravity free fall winch.
FIG. 2 is a cross-sectional view of the winch.
FIG. 3 is a top view of the winch.
FIG. 4 is a perspective view of the winch.
Fig. 5 is a schematic view of the structure of the sheave.
Fig. 6 is a schematic structural view of the plug.
Fig. 7 is an assembly view of the one-way push wheel and the push rod.
Description of reference numerals:
1. a motor;
2. a speed reducer;
3. a sheave; 3.1 pin holes;
4. a main shaft;
5. a bolt; 5.1 a substrate; 5.2, a pin;
6. a pressure spring;
7. a one-way push wheel; 7.1, a gap; 7.2 closing the plate; 7.3 a first plane; 7.4 second inclined plane;
8. a support block;
9. a push rod; 9.1 front wheels; 9.2 rear wheels;
10. a side plate;
11. a flange-type linear bearing;
12. positioning a plate;
13. a base plate.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left and right sides in the drawings are regarded as the upper, lower, left and right sides of the electric lifting gravity free fall type winch in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be 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.
The embodiment relates to a method for electrically lifting a gravity free-fall type winch, which comprises the following steps of:
sending a command to a power system;
the power system drives the rope pulley of the winch to rotate forward, the traction steel wire rope on the rope pulley lifts the suspended object to a target height, and the suspended object hovers;
or the power system drives the rope wheel of the winch to rotate reversely, and the suspension on the steel wire rope is dragged to fall freely.
Commands are sent to the power system, where the commands may be start, stop, forward, reverse, self-lock, and the like.
The power system is equipment for providing power for the winch, such as a motor 1 and a speed reducer 2, which are connected through a coupling.
Specifically, the motor 1 transmits power to the rope pulley through the speed reducer 2, the traction steel wire rope on the rope pulley lifts the suspension object to a target height, the speed reducer 2 provides mechanical self-locking, the suspension object hovers, or the suspension object is lifted to a fixed point height through the limiting sensor, and the suspension object hovers after the limiting sensor detects a signal.
When the power system receives a reverse rotation instruction, the power system drives the rope wheel of the winch to reversely rotate, the suspended object on the steel wire rope is pulled to freely fall, if the suspended object is the intercepting net, the intercepting net will freely fall, the required time is about 1-2 seconds, compared with the conventional motor control intercepting net, the time for the intercepting net to fall is ten seconds, the free fall is obviously faster, and the stalled vehicle can be effectively and timely intercepted.
Referring to fig. 2 and 3, the winch at least comprises a power system, that is, an output shaft of a motor 1 is connected with an input shaft of a speed reducer 2 through a coupling, a main shaft 4 is coaxially installed on the output shaft of the speed reducer 2, a rope pulley 3, a bolt 5 and a one-way push wheel 7 are sequentially sleeved on the main shaft 4, a push rod 9 is arranged below the one-way push wheel 7, the push rod 9 is parallel to the main shaft 4, the one-way push wheel 7 intermittently rotates and pushes the push rod 9, the push rod 9 drives the bolt 5 to be inserted into or pulled out of the rope pulley 3, a traction steel wire rope is wound in a wheel groove of the rope pulley 3, and a free end of the traction steel wire rope is connected with a suspension (such as an intercepting net).
The rope wheel 3, the bolt 5 and the one-way push wheel 7 are preferably in a disc shape so as to be convenient to rotate.
When the bolt 5 is inserted into the rope pulley 3, the rope pulley and the bolt are connected, the main shaft 4 can drive the rope pulley to rotate (rotate forwards) at the same time, the one-way push wheel 7 does not rotate at the moment, and when a suspended object is lifted, the speed reducer 2 provides mechanical self-locking, so that the suspended object can hover at any time, namely, a conventional mode, namely, motor lifting is adopted in the process of lifting the suspended object.
When the bolt 5 is pulled out, the one-way push wheel 7 is connected with the main shaft 4, the main shaft 4 drives the one-way push wheel 7 to rotate (rotate reversely), the one-way push wheel 7 pulls the push rod 9, the push rod 9 drives the bolt 5 to pull out the rope pulley 3, the rope pulley 3 is separated from the main shaft 4, and suspended objects on the traction steel wire rope fall freely.
The suspension can be an interception net or other objects.
As shown in fig. 4, the rope pulley 3 is sleeved on the main shaft 4 through a bearing, and a plurality of pin holes 3.1 for inserting the bolts 5 are uniformly arranged on the wheel body of the rope pulley 3 along the circumferential direction at intervals, and referring to fig. 5, the shape of the pin holes 3.1 is not limited to a circular shape, and a trapezoid shape shown in fig. 5 can be preferred to facilitate the insertion of the bolts 5.
Referring to fig. 4, the plug 5 is sleeved on the main shaft 4 through the flange-type linear bearing 11, the plug 5 includes a base plate 5.1 slidably sleeved on the flange-type linear bearing 11, as shown in fig. 6, n pins 5.2 are provided on a surface of the base plate 5.1 facing the sheave 3, in this embodiment, n is 2, that is, two pins 5.2 distributed at 180 ° are fixedly connected to the base plate 5.1.
As shown in fig. 4, a positioning plate 12 is further detachably and fixedly sleeved on the main shaft 4 between the rope pulley 3 and the bolt 5, n through holes are formed in the positioning plate 12, n is 2, and the pin 5.2 of the bolt 5 passes through the through holes and then falls into the pin hole 3.1. as can be seen from fig. 5, the pin hole 3.1 on the rope pulley 3 is obviously more than the pin 5.2 of the bolt 5, so that the pin 5.2 can be conveniently inserted into the pin hole 3.1.
The number of the pins 5.2 is the same as the number of the through holes on the positioning plate 12.
N is a positive integer.
The function of the positioning plate 12 is to limit and guide the insertion of the pin 5.2 of the bolt 5.
The second function of the positioning plate 12 is to rotate synchronously with the main shaft 4, and when the bolt 5 is connected with the rope pulley 3, the positioning plate 12 can drive the rope pulley 3 to rotate.
Referring to fig. 4, the main shaft 4 is sleeved with a positioning sleeve, an overrunning clutch is coaxially installed on the positioning sleeve, the one-way pushing wheel 7 is sleeved on the overrunning clutch, the one-way pushing wheel 7 is of a disc wheel structure with a central hole, a gap 7.1 is formed in the rim of the disc wheel, the gap 7.1 is used for pushing the push rod 9, and precisely, the gap 7.1 is used for periodically/intermittently pushing the push rod 9.
A compressed spring 6 which is sleeved on the main shaft 4 and is in a compressed state is arranged between the bolt 5 and the one-way push wheel 7.
When the suspension object falls freely, the main shaft 4 keeps rotating reversely, and when the push rod 9 returns to the notch 7.1 of the unidirectional push wheel 7 after the unidirectional push wheel 7 rotates for a circle, the pressure spring 6 extends to extrude the pin 5.2 of the bolt 5 to fall into the pin hole 3.1 of the rope wheel 3.
As shown in fig. 4, the power system is fixed on the bottom plate 13, the bottom plate 13 is further provided with a supporting block 8, the supporting block 8 is provided with a round hole for the push rod 9 to penetrate through and rotate, the push rod 9 is fixedly sleeved with two round wheels, namely a front wheel 9.1 and a rear wheel 9.2, the supporting block 8 is located between the two round wheels, wherein the front wheel 9.1 is close to the base plate 5.1 of the plug pin 5, and the rear wheel 9.2 is intermittently arranged in the notch 7.1.
The front wheel 9.1 is used for pulling the bolt 5 to be pulled out or inserted into the rope wheel 3, so that the front wheel 9.1 needs to be tightly attached to the base plate 5.1 as shown in fig. 2 and 4.
The rear wheel 9.2 serves to transmit a pin-out or latch-in signal to the front wheel 9.1, so that the rear wheel 9.2 is intermittently placed in the gap 7.1.
The bottom plate 13 is also provided with a side plate 10, the main shaft 4 penetrates through the side plate 10 after penetrating through the unidirectional pushing wheel 7, a bearing sleeved on the main shaft 4 is arranged at the joint of the side plate 10 and the main shaft 4, and the side plate 10 is also provided with a hole for the pushing rod 9 to penetrate through.
The side plates 10 are used for providing support for the main shaft 4 and the push rod 9.
Referring to fig. 7, the part of the rear wheel 9.2 above the push rod 9 is embedded into the notch 7.1, the aperture of the notch 7.1 is larger than the diameter of the rear wheel 9.2, a sealing plate 7.2 is fixedly connected to the notch 7.1 opposite to the bolt 5, the sealing plate 7.2 is parallel to the rear wheel 9.2, and the sealing plate 7.2 is used for limiting the rear wheel 9.2.
As shown in fig. 7, the notch 7.1 at least includes two opposite cut surfaces, the rear wheel 9.2 is located between the two cut surfaces, the two cut surfaces are a first plane 7.3 perpendicular to the sealing plate 7.2 and a second inclined plane 7.4 forming an obtuse angle with the sealing plate 7.2, and both the two cut surfaces are connected to the sealing plate 7.2.
The working principle and the working process of the notch 7.1 are as follows:
when the suspended object is lifted and the main shaft 4 rotates forwards, the one-way push wheel 7 is not connected with the overrunning clutch, so that the one-way push wheel 7 does not rotate, at the moment, if the bolt 5 is connected with the rope wheel 3, the main shaft 4 drives the positioning plate 12 to synchronously rotate, the positioning plate 12 drives the front and rear rope wheels 3 to synchronously rotate with the bolt 5, namely, the motor 1 controls the lifting of the suspended object;
when a suspended object falls and the main shaft 4 rotates reversely, the one-way push wheel 7 is connected with the overrunning clutch, the main shaft 4 drives the one-way push wheel 7 to rotate reversely, the second inclined surface 7.4 in the notch 7.1 of the one-way push wheel 7 is in contact with and pushes the wheel surface of the rear wheel 9.2, the rear wheel 9.2 is displaced, the push rod 9 is also displaced, the front wheel 9.1 on the push rod 9 pushes the base plate 5.1 of the bolt 5, the friction force of the front wheel 9.1 and the base plate 5.1 pushes the pin 5.2 of the bolt 5 to pull the pin from the pin hole 3.1 of the rope wheel 3, the bolt 5 slides rightwards along the flange type linear bearing 11 (see fig. 2, 3 and 4), the bolt 5 is separated from the rope wheel 3, and the rope wheel 3 can rotate randomly at the moment, so that the suspended object can fall freely.
The method for electrically lifting the gravity free-fall type winch specifically comprises the following steps:
the method comprises the following steps that I, a power system drives a rope wheel of a retractable winch to rotate forwards, a traction steel wire rope on the rope wheel lifts a suspended object to a target height, and the suspended object hovers, wherein the specific characteristic is that a pin 5.2 of a bolt 5 penetrates through a positioning plate 12 and then falls into a pin hole 3.1, the bolt 5 is connected with the rope wheel 3, the power system drives a main shaft 4 to rotate forwards, the positioning plate 12 drives the rope wheel 3 to rotate synchronously, the rope wheel 3 drives the traction steel wire rope to lift the suspended object to the target height, and the suspended object hovers;
in the above process, the overrunning clutch remains disengaged from the main shaft 4.
And II, the power system drives the rope wheel of the winch to rotate reversely, and the suspension on the steel wire rope is pulled to fall freely, specifically, the overrunning clutch is connected with the main shaft 4, the power system drives the main shaft 4 to rotate reversely, the main shaft 4 drives the one-way push wheel 7 to rotate, the second inclined plane 7.4 in the gap 7.1 of the one-way push wheel 7 pushes the rear wheel 9.2 on the push rod 9, the push rod 9 displaces, the front wheel 9.1 pulls the bolt 5 to pull the pin, the bolt 5 is separated from the rope wheel 3, the rope wheel 3 rotates freely, and the suspension falls freely.
And when the container is lifted again, repeating the step I.
In the process of free falling of the suspension, the main shaft 4 keeps rotating reversely, and when the one-way push wheel 7 rotates for a circle and the rear wheel 9.2 of the push rod 9 returns to the notch 7.1 of the one-way push wheel 7, the pressure spring 6 extends to extrude the bolt 5 to fall into the rope wheel 3.
The invention realizes the connection or disconnection of the bolt and the rope wheel through the overrunning clutch, after the bolt is pulled out, the rope wheel can rotate at will, and the traction steel wire rope on the rope wheel lifts the free falling body of the suspended object.
It should be particularly noted that the winch according to the present embodiment may be applied to, but not limited to, a stall intercepting system of a flexible trackless rubber-tyred vehicle, and may also be used for lifting suspended objects in other fields and other industries.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A method for electrically lifting a gravity free-fall type winch is characterized by comprising the following steps:
sending a command to a power system;
the power system drives the rope pulley of the winch to rotate forward, the traction steel wire rope on the rope pulley lifts the suspended object to a target height, and the suspended object hovers;
or the power system drives the rope wheel of the winch to rotate reversely, and the suspension on the steel wire rope is dragged to fall freely.
2. The method for retracting and releasing the winch according to the claim 1, wherein the retracting and releasing winch at least comprises a power system, the output shaft of the power system is coaxially provided with a main shaft (4), the main shaft (4) is sequentially sleeved with a rope pulley (3), a bolt (5) and a one-way push wheel (7), a push rod (9) is arranged below the one-way push wheel (7), the one-way push wheel (7) intermittently rotates and pushes the push rod (9), the push rod (9) drives the bolt (5) to insert or pull out the rope pulley (3), and a traction steel wire rope is wound in a wheel groove of the rope pulley (3);
when the bolt (5) is pulled out, the hanging object on the steel wire rope is pulled to freely fall.
3. The method for retracting and releasing the winch in an electric lifting gravity free-fall manner according to claim 2, characterized in that the rope pulley (3) is sleeved on the main shaft (4) through a bearing, and a plurality of pin holes (3.1) for inserting the pins (5) are uniformly arranged on the wheel body of the rope pulley (3) at intervals along the circumferential direction.
4. The method for retracting and releasing the winch according to the claim 3, characterized in that the plug (5) is sleeved on the main shaft (4) through a flange-type linear bearing (11), the plug (5) comprises a base plate (5.1) which is slidably sleeved on the flange-type linear bearing (11), and the surface of the base plate (5.1) opposite to the rope pulley (3) is provided with n pins (5.2);
a positioning plate (12) is also detachably and fixedly sleeved on the main shaft (4) between the rope wheel (3) and the bolt (5);
n through holes are formed in the positioning plate (12), and a pin (5.2) of the bolt (5) passes through the through holes and then falls into the pin hole (3.1);
wherein n is a positive integer.
5. The method for retracting and releasing the winch in an electric lifting gravity free fall manner according to claim 4, characterized in that a positioning sleeve is sleeved on the main shaft (4), an overrunning clutch is coaxially installed on the positioning sleeve, a one-way pushing wheel (7) is sleeved on the overrunning clutch, the one-way pushing wheel (7) is of a disc wheel structure with a hole in the center, a gap (7.1) is formed in the rim of the disc wheel, and the pushing rod (9) is pushed by the gap (7.1);
a compression spring (6) which is sleeved on the main shaft (4) and is in a compression state is arranged between the bolt (5) and the one-way push wheel (7).
6. The method for electrically lifting the winch in the gravity free-fall mode according to claim 5, wherein the power system is fixed on a bottom plate (13), a supporting block (8) is further arranged on the bottom plate (13), a round hole for the push rod (9) to penetrate through and rotate is formed in the supporting block (8), two round wheels, namely a front wheel (9.1) and a rear wheel (9.2), are fixedly sleeved on the push rod (9) in a penetrating manner, the supporting block (8) is located between the two round wheels, the front wheel (9.1) is close to the bolt (5), and the rear wheel (9.2) is intermittently placed in the notch (7.1);
the bottom plate (13) is further provided with a side plate (10), the main shaft (4) penetrates through the side plate (10) after penetrating through the unidirectional pushing wheel (7), a bearing sleeved on the main shaft (4) is arranged at the joint of the side plate (10) and the main shaft (4), and the side plate (10) is further provided with a hole for the push rod (9) to penetrate through.
7. The method for electrically lifting the gravity free-fall type winch according to claim 6, wherein the part of the rear wheel (9.2) above the push rod (9) is embedded into the notch (7.1), the caliber of the notch (7.1) is larger than the diameter of the rear wheel (9.2), a sealing plate (7.2) is fixedly connected to the notch (7.1) opposite to the bolt (5), and the sealing plate (7.2) is parallel to the rear wheel (9.2);
the notch (7.1) at least comprises two opposite tangent planes, the rear wheel (9.2) is positioned between the two tangent planes, the two tangent planes are respectively a first plane (7.3) which is perpendicular to the sealing plate (7.2) and a second inclined plane (7.4) which forms an obtuse included angle with the sealing plate (7.2), and the two tangent planes are connected with the sealing plate (7.2).
8. The method for electrically lifting a gravity free-fall winch according to claim 6, wherein the power system drives a rope pulley of the winch to rotate forward, a traction wire rope on the rope pulley lifts a suspended object to a target height, and the suspended object hovers, and the method specifically comprises the following steps:
a pin (5.2) of a bolt (5) penetrates through a positioning plate (12) and then falls into a pin hole (3.1), the bolt (5) is connected with a rope pulley (3), a power system drives a main shaft (4) to rotate forwards, the positioning plate (12) drives the rope pulley (3) to rotate synchronously, the rope pulley (3) drives a traction steel wire rope to lift a suspended object to a target height, and the suspended object is suspended;
in the process, the overrunning clutch and the main shaft (4) are kept disengaged.
9. The method for electrically lifting the gravity free-fall winch according to claim 6 or 8, wherein the power system drives the rope wheel of the winch to rotate reversely to pull the hanging object on the steel wire rope to fall freely, which comprises:
the overrunning clutch is connected with the main shaft (4), the power system drives the main shaft (4) to rotate reversely, the main shaft (4) drives the one-way push wheel (7) to rotate, a second inclined plane (7.4) in a gap (7.1) of the one-way push wheel (7) pushes a rear wheel (9.2) on the push rod (9), the push rod (9) displaces, the front wheel (9.1) pulls the bolt (5) to pull the pin, the bolt (5) is separated from the rope pulley (3), the rope pulley (3) rotates freely, and a suspended object falls freely.
10. The method for retracting the winch according to claim 9, wherein the main shaft (4) is kept reversely rotated during the free falling of the suspended object, and when the one-way pushing wheel (7) rotates for a circle and the rear wheel (9.2) of the push rod (9) is returned to the notch (7.1) of the one-way pushing wheel (7), the compression spring (6) extends to press the plug pin (5) to fall into the rope wheel (3).
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| KR20140001022A (en) * | 2012-06-27 | 2014-01-06 | 이종수 | Hydraulic winch |
| CN103171985A (en) * | 2013-04-03 | 2013-06-26 | 北京诺安舟应急缓降机械装置有限公司 | Heavy ascending-descending putting-releasing device |
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