CN214935608U

CN214935608U - Band-type brake mechanism and winch applying same

Info

Publication number: CN214935608U
Application number: CN202120489068.6U
Authority: CN
Inventors: 秦伟; 张鹏程; 朱慧媛
Original assignee: Xuzhou Chuanyi Machinery Co ltd
Current assignee: Xuzhou Chuanyi Machinery Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-11-30
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a band-type brake mechanism and use winch of this mechanism, which comprises a frame, the upper portion of the both sides board of frame is passed through the steadying plate and is connected, the power take off unit that is used for providing power is arranged at the center of frame, the output of power take off unit is connected with the reducing gear box, the bilateral symmetry of reducing gear box has two reels, two the reel all with the coaxial fixed connection of output shaft of reducing gear box, two the equipartition has been put and has been used for preventing the grooving of indiscriminate rope in the use on the reel, two one side equipartition that the reel is close to the frame curb plate has been put two sets of safety brake, the center pin of reel passes the rack-mount and has the speed adjusting device who is used for safety protection. The utility model provides a band-type brake mechanism and applied winch of this mechanism can realize automatic control, and the reaction is rapid, and braking distance is short, has greatly improved the reliability of operation.

Description

Band-type brake mechanism and winch applying same

Technical Field

The utility model belongs to the technical field of lifting device, concretely relates to band-type brake mechanism and use winch of this mechanism.

Background

The winch is also called a winch, and the winch can realize vertical lifting, horizontal or inclined pulling of the heavy object by using a hoisting device for lifting or pulling the heavy object by winding a steel wire rope or a chain by a roller.

For large winches, since the hoisted weight is often expensive, emergency braking is required in order to reduce the loss due to possible safety accidents during the operation of the winch.

The conventional braking modes of the winch comprise a band-type brake mode and a disc brake mode, and the two modes mainly utilize a mode of increasing friction resistance to realize braking, and the two modes brake gently but have a longer braking distance. However, for some hoists with special properties, rapid braking is required, and the braking distance is as short as possible, preventing other potential risks due to long braking distances.

An authorization notice number is CN2835196Y, which discloses a hydraulic band-type double-brake lifting winch, which adopts a band-type brake form and is realized by a friction braking mode.

The application number CN106966316A discloses a synchronous brake device for winch, which adopts an electromagnet to drive two brake mechanisms to move so as to realize synchronous brake movement.

Above two technical scheme all rely on friction braking with the band-type brake form, therefore its braking distance overlength, especially to the great winch of output power, the overlength braking distance can lead to the thing of lifting by crane can produce great impact, not only can damage the winch still takes place the safety problem very easily, consequently at present urgent need a can short distance, quick braked winch.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a band-type brake mechanism and use winch of this mechanism can realize automatic control, and the reaction is rapid, and braking distance is short, has greatly improved the reliability of operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a band-type brake mechanism and use winch of this mechanism, includes the frame, the upper portion of the both sides board of frame is passed through the steadying plate and is connected, the power take off unit who is used for providing power is arranged at the center of frame, the output of power take off unit is connected with the reducing gear box, the bilateral symmetry of reducing gear box has two reels, two the reel all with the coaxial fixed connection of output shaft of reducing gear box, two the equipartition has been put on the reel and is used for preventing the rope groove of indiscriminate rope in the use, two one side equipartition that the reel is close to the frame curb plate has been put two sets of safety braking device, the center pin of reel passes the frame and installs the speed adjusting device who is used for safety protection.

Preferably, every group safety braking device all includes with reel coaxial coupling's ratchet, arrange in the ratchet both sides and with ratchet assorted pawl, be used for controlling the pawl control mechanism that opens and shuts and arrange the proximity switch who is used for detecting the pawl state of opening and shutting on the frame lateral wall, the quantity of pawl is two, two the pawl is staggered half ratchet tooth's position each other and is arranged on the ratchet, just the pawl is kept away from the one end with the ratchet contact and all is articulated with the frame, the bolt has still been arranged on the pawl, proximity switch and power take off unit electric connection.

Preferably, control mechanism includes the first installing support of being connected with the lateral wall of frame, arranges the electro-magnet on first installing support, the second installing support of being connected with the frame and arranges the extension spring on the second installing support, the one end of electro-magnet is articulated with first installing support, the other end of electro-magnet is articulated with the pawl, the one end and the second installing support fixed connection of extension spring, the other end of extension spring is through opening and shutting with bolted connection control pawl.

Preferably, the electromagnet is a telescopic electromagnet, and the electromagnet is connected to a control circuit of the winch.

Preferably, the speed adjusting device is a rotary encoder.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the safety device adopts automatic control, has rapid response and short braking distance, greatly improves the reliability of winch operation, and improves the hoisting stability by adopting a double-output rope winch;

(2) the safety brake device is provided with the ratchet wheel and pawl mechanism type safety brake devices on two sides of the winch, detection data such as a rotary encoder and a proximity switch provide signals for the system to act or not, the safety brake device uses an electromagnet to match with a tension spring as power to complete opening and closing actions of a pawl, the electromagnet is arranged to participate in controlling the opening and closing of the safety brake device, and a power-off protection mode is adopted, so that the winch can be emergently braked when the system is suddenly powered off, and safety accidents are avoided;

(3) two pawls are arranged on two sides of the ratchet wheel, and the mounting positions of the two pawls and the ratchet wheel are staggered by half ratchet wheel tooth positions, so that the braking distance is greatly shortened, and the impact on the structure and a hoisting object is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals:

1-a rack, 2-a power output unit, 3-a reduction gearbox, 4-a winding drum, 5-a speed regulating device, 6-a ratchet wheel, 7-a pawl, 8-a control mechanism, 801-a first mounting bracket, 802-an electromagnet, 803-a second mounting bracket, 804-a tension spring, 9-a proximity switch and 10-a bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the band-type brake mechanism and the winch using the same provided by the embodiment include a frame 1, the upper parts of the two side plates of the frame 1 are connected through a stabilizing plate 101, the bearing capacity of the frame 1 is improved, a power output unit 2 for providing power is arranged in the center of the frame 1, the output end of the power output unit 2 is connected with a reduction box 3, two winding drums 4 are symmetrically arranged on two sides of the reduction gearbox 3, the two winding drums 4 are coaxially and fixedly connected with an output shaft of the reduction gearbox 3, a power output shaft inputs power to the winding drums 4 on the two sides through the reduction gearbox 3, rope grooves used for preventing rope disorder in the use process are uniformly arranged on the two winding drums 4, two groups of safety braking devices are uniformly arranged on one side of each winding drum 4 close to a side plate of the frame 1, the central shaft of the winding drum 4 penetrates through the frame 1 and is provided with a speed regulating device 5 for safety protection.

Specifically, each group of safety braking devices comprises a ratchet wheel 6 coaxially connected with the winding drum 4, pawls 7 arranged on two sides of the ratchet wheel 6 and matched with the ratchet wheel 6, a control mechanism 8 for controlling the opening and closing of the pawls 7, and a proximity switch 9 arranged on the side wall of the rack 1 and used for detecting the opening and closing state of the pawls, the number of the pawls 7 is two, the two pawls 7 are arranged on the ratchet wheel 6 in a staggered manner by half of a ratchet wheel tooth, the braking distance is greatly reduced, and one end of the pawl 7, which is far away from the end in contact with the ratchet wheel 6, is hinged with the frame 1, a bolt 10 is also arranged on the pawl 7, the proximity switch 9 is electrically connected with the power output unit 2, when the proximity switch 9 detects that the pawl 7 is close, at the moment, the pawl 7 is not contacted with the ratchet wheel 6, the safety brake device is in an opening and closing state, and the power output unit 2 outputs normal power to enable the winding drum 4 to work normally;

in the use, if the distance of the tooth position on the half ratchet 6 of hoist and mount goods whereabouts, if pawl 7 just contacts the ratchet this moment, have certain probability can block not get into, damage the tooth of ratchet 6 very easily, and adopt two pawls 7 dislocation half ratchet installation, very big improvement the ageing nature of pawl 7 card income ratchet.

Specifically, the control mechanism 8 comprises a first mounting bracket 801 connected with the side wall of the rack 1, an electromagnet 802 arranged on the first mounting bracket 801, a second mounting bracket 803 connected with the rack 1, and a tension spring 804 arranged on the second mounting bracket 803, wherein one end of the electromagnet 802 is hinged to the first mounting bracket 801, the other end of the electromagnet 802 is hinged to the pawl 7, one end of the tension spring 804 is fixedly connected with the second mounting bracket 803, and the other end of the tension spring 804 is connected with the bolt 10 to control the opening and closing of the pawl 7;

due to the structural characteristics of the ratchet 6, the two pawls 7 disposed on both sides of the ratchet 6 are controlled in accordance with the same principle but have different shapes and structures, and thus the electromagnet 802 is an electrically retractable type electromagnet and an electrically extendable type electromagnet, respectively.

Specifically, the electromagnet 802 is a telescopic electromagnet, the electromagnet 802 is connected to a control circuit of the winch, and once the system is powered off, the electromagnet 802 controls the pawl 7 to be clamped into the ratchet 6 to brake the drum 4, so that danger is avoided.

Specifically, speed adjusting device 5 is rotary encoder, inserts in the control circuit of winch, and in case the winch takes place the speed per hour situation at hoist and mount in-process, rotary encoder detects 4 rotational speed stalls of reel and can transmit the signal to the system in, and then adopts pawl 7 card to go into the braking to reel 4 in ratchet 6 through control electro-magnet 802, avoids dangerous the emergence.

When the system is used, the system firstly performs self-checking after being started, and judges whether the pawl 7 completely escapes from the ratchet wheel 6 or not by detecting signals through the proximity switches 9 at respective positions, if not, the system supplies power to the electromagnets 802, the pawl 7 escapes from the ratchet wheel 6 under the action of the electromagnets 802, and when the proximity switches 9 detect signals, the system can give a positive starting signal to the winch power output unit 2. In the operation process, if the system takes place to hoist and mount the accident that the thing takes place to fall suddenly, rotary encoder detects 4 rotational speed stall of reel and can transmit the signal to the system in, and then adopts pawl 7 card to brake reel 4 in going into ratchet 6 through control electro-magnet 802, avoids dangerous the emergence, and when the system cuts off the power supply suddenly, electro-magnet 802 obtains the signal control pawl 7 card of outage and brakes reel 4 in going into ratchet 6, and pawl 7 is close ratchet 6, forces winch reel 4 to brake.

To sum up, the utility model provides a band-type brake mechanism and applied winch of this mechanism can realize automatic control, and the reaction is rapid, and braking distance is short, has greatly improved the reliability of operation.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A band-type brake mechanism and a winch applying the same comprise a frame (1) and are characterized in that, the upper parts of two side plates of the frame (1) are connected through a stabilizing plate (101), a power output unit (2) for providing power is arranged in the center of the frame (1), the output end of the power output unit (2) is connected with a reduction gearbox (3), two winding drums (4) are symmetrically arranged on two sides of the reduction gearbox (3), the two winding drums (4) are coaxially and fixedly connected with an output shaft of the reduction gearbox (3), rope grooves for preventing rope disorder in the using process are uniformly arranged on the two winding drums (4), two groups of safety braking devices are uniformly arranged on one side, close to a side plate of the frame (1), of the two winding drums (4), and a central shaft of the winding drum (4) penetrates through the rack (1) and is provided with a speed regulating device (5) for safety protection.

2. The band-type brake mechanism and the winch applying the same as claimed in claim 1, wherein each set of safety brake device comprises a ratchet wheel (6) coaxially connected with the winding drum (4), pawls (7) arranged on both sides of the ratchet wheel (6) and matched with the ratchet wheel (6), a control mechanism (8) for controlling the opening and closing of the pawls (7) and a proximity switch (9) arranged on the side wall of the frame (1) for detecting the opening and closing state of the pawls, the number of the pawls (7) is two, the two pawls (7) are arranged on the ratchet wheel (6) in a staggered manner by half of a ratchet wheel tooth, and one end of the pawl (7) far away from the ratchet wheel (6) is hinged with the frame (1), and a bolt (10) is further arranged on the pawl (7), and the proximity switch (9) is electrically connected with the power output unit (2).

3. The band-type brake mechanism and the winch applying the same as claimed in claim 2, wherein the control mechanism (8) comprises a first mounting bracket (801) connected with the side wall of the machine frame (1), an electromagnet (802) arranged on the first mounting bracket (801), a second mounting bracket (803) connected with the machine frame (1) and a tension spring (804) arranged on the second mounting bracket (803), one end of the electromagnet (802) is hinged with the first mounting bracket (801), the other end of the electromagnet (802) is hinged with the pawl (7), one end of the tension spring (804) is fixedly connected with the second mounting bracket (803), and the other end of the tension spring (804) is connected with the bolt (10) to control the opening and closing of the pawl (7).

4. The band-type brake mechanism and the winch applying the same as claimed in claim 3, wherein the electromagnet (802) is a telescopic electromagnet, and the electromagnet (802) is connected to a control circuit of the winch.

5. The band-type brake mechanism and the winch applying the same as claimed in claim 1, wherein the speed regulating device (5) is a rotary encoder.