CN214734067U - Safety protection device for tower crane winch - Google Patents

Safety protection device for tower crane winch Download PDF

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Publication number
CN214734067U
CN214734067U CN202120921813.XU CN202120921813U CN214734067U CN 214734067 U CN214734067 U CN 214734067U CN 202120921813 U CN202120921813 U CN 202120921813U CN 214734067 U CN214734067 U CN 214734067U
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China
Prior art keywords
brake
linkage
rotating shaft
oil pump
brake mechanism
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Active
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CN202120921813.XU
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Chinese (zh)
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张言华
杨波
张璐
张剑
张熠晖
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Anshun Zhongan Installation Engineering Co ltd
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Anshun Zhongan Installation Engineering Co ltd
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Abstract

The utility model discloses a safety protection device for tower crane winch, which comprises a drum shaft for winding steel rope, the safety protection device comprises a base, a supporting seat, a connecting frame, a brake mechanism, a linkage mechanism, a hydraulic oil pump and a base, the supporting seat is fixed on the base, the lower end of the connecting frame is arranged on the supporting seat, the brake mechanism is arranged in the connecting frame, the brake mechanism is arranged on the base, one end of the brake mechanism is connected with the brake mechanism in a transmission way, and the other end is detachably connected with the drum shaft; the hydraulic oil pump is arranged on the supporting seat through the base and is connected with the upper end of the connecting frame through the linkage mechanism; the brake mechanism controls the working state of the brake mechanism through the linkage mechanism under the action of the hydraulic oil pump. Adopt safety arrangement, can prevent effectively that the reel axle from continuing to rotate, have simple structure, operation and simple to operate, its commonality is good, safe and reliable has higher practical value and spreading value.

Description

Safety protection device for tower crane winch
Technical Field
The utility model belongs to the technical field of the safe technique of tower crane among the building equipment and specifically relates to a safety arrangement for tower crane hoist engine.
Background
A tower crane is also called as a tower crane, is the most common lifting equipment on a construction site, and is often used for lifting articles in the construction site and lifting components such as heavy objects to different heights. In the hoisting process of the tower crane, a winch is needed, the purpose of the winch is to wind the steel wire rope by using a winding drum, the tower crane in the prior art is used for driving a motor and a hoisting wheel for driving the hoisting of the steel wire rope to be in a direct connection relationship, so that once the phenomenon of overweight and overload of a hoisted heavy object occurs, the steel wire rope is easy to continue to rotate along with the winch, the phenomenon of burning out of the motor or falling of the heavy object is likely to occur, and the potential safety hazard is large when the tower crane is used; or the condition of sudden power failure easily results in the lifting object on the lifting hook in the steel wire rope not to be detached in time, and the tower crane can rotate along the downwind direction of the tower arm along with inertia, so that the steel wire rope and the lifting hook deflect randomly in the air along with the lifting object, and the safety risk that the steel wire rope and the lifting hook collide with surrounding buildings, external frames and operation workers at any time is caused.
In addition, in the long-time use process of the tower crane, because the brake system of the winch is a wearing part, the abrasion problem is easy to occur, if the brake pad is abraded too seriously, the brake failure can be caused, the serious potential safety hazard is also caused, and the safety accident is possibly generated. Therefore, in order to improve the safety of the winch, the existing tower crane system needs to be improved, and when a motor for controlling the winch or a brake system of the winch breaks down, the winding drum for winding the steel wire rope in the winch can be effectively prevented from continuously rotating.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the problem that exists in the background art, for reducing the safe risk in tower crane operation place, under the unusual circumstances appearing, can effectively prevent to be used for winding wire rope's reel to continue to rotate in the hoist engine to a safety arrangement that simple structure, operation and simple to operate, commonality are good is provided, specifically speaking is a safety arrangement for tower crane hoist engine.
For solving the technical problem, the utility model discloses the technical scheme who adopts does: a safety protection device for a tower crane winch comprises a drum shaft for winding a steel rope, wherein the safety protection device comprises a base, a supporting seat, a connecting frame, a brake mechanism, a linkage mechanism, a hydraulic oil pump and a base; the hydraulic oil pump is arranged on the supporting seat through the base, and the upper end of a hydraulic movable arm of the hydraulic oil pump is connected with the upper end of the connecting frame through a linkage mechanism; and the brake mechanism is controlled to be in two working states, namely a braking state and a non-braking state, by the linkage mechanism under the action of the hydraulic oil pump.
Furthermore, the safety protection device for the tower crane winch of the utility model comprises four connecting plates, two connecting shafts and a telescopic bracket, wherein the four connecting plates are divided into two groups, and form two connecting frames through the corresponding connecting shafts, the two connecting frames are symmetrically distributed on two sides of the brake mechanism, the bottom of the connecting frame is rotatably connected with the supporting seat through the corresponding connecting shafts by the connecting plates, and the upper part of the connecting frame is movably connected with the connecting plates through the telescopic bracket; the brake mechanism comprises a brake drum, a first brake pad and a second brake pad which are arranged close to the outer wall of the brake drum in an opposite mode, and a first connecting rotating shaft and a second connecting rotating shaft which are connected with the connecting frame; the outer wall of the first brake pad is connected with a first connecting piece, and the outer wall of the second brake pad is connected with a second connecting piece; the first connecting piece is rotationally connected with one of the connecting frames through a first connecting rotating shaft, and the second connecting piece is rotationally connected with the other connecting frame through a second connecting rotating shaft; the connecting frame drives the connecting frame to rotate along with the connecting shaft and close to one side of the brake drum in the ascending process of a hydraulic movable arm of the hydraulic oil pump through the linkage mechanism, and enables the telescopic support connected with the connecting plate to generate compression deformation, and at the moment, the first connecting piece and the second connecting piece synchronously rotate along with the connecting frame through the corresponding first connecting rotating shaft and the second connecting rotating shaft to drive the first brake pad and the second brake pad to mutually close to the outer wall of the brake drum, so that braking friction force is generated, and the brake mechanism is in a braking state; on the contrary, the link is in the hydraulic swing arm decline return in-process of hydraulic oil pump (7), through link gear drive link follows the brake drum one side is kept away from to the connecting shaft rotates to use the telescopic bracket who is connected with the connecting plate by the compression state return, first connecting piece and second connecting piece are connected the pivot through corresponding first connection pivot and second and are rotated along with the link is synchronous this moment, drive first brake block and second brake block keep away from the brake drum outer wall each other, make brake mechanism is in non-braking state.
Further, a safety arrangement for tower crane hoist engine, wherein telescopic bracket is including connecting lead screw, connecting box, spring and leg joint axle, the connecting plate rotation in the connecting frame that the rear end of connecting box passes through leg joint axle and is close to hydraulic oil pump one side is connected, the connecting plate rotation in connecting lead screw's the front end passes through leg joint axle and another connecting frame is connected, and its rear end passes the preceding terminal surface of connecting box to extend to in the connecting box, with the rear end face of connecting box is connected, the spring sets up on being located the connecting lead screw of connecting box, and the front end of spring still is equipped with the follow spring synchronous movement's shellproof fender ring.
Further, a safety arrangement for tower crane hoist engine, wherein arrestment mechanism includes the bearing frame and sets up the braking pivot in the bearing frame, the bearing frame is fixed in on the base, the rear end of braking pivot is fixed in the brake drum, and the bearing that its front end passes through in the bearing frame extends to the bearing frame outside and is the free end, arrestment mechanism can dismantle through the drum shaft in braking pivot and the hoist engine and link to each other.
Further, a safety arrangement for tower crane hoist engine, wherein the free end of braking pivot is equipped with the spacing boss corresponding with the reel axle in the hoist engine, spacing boss sets up to strip shape or cruciform structure.
Further, a safety arrangement for tower crane hoist engine, wherein link gear is including linkage support, linkage lead screw, drive unit and linkage pivot, the linkage pivot is including first linkage pivot, second linkage pivot and third linkage pivot, drive unit with hydraulic oil pump's hydraulic pressure swing arm fixed connection, the rear end of linkage support through first linkage pivot with drive unit swing joint, the front end of linkage support is rotated with the connecting plate top that is close to hydraulic oil pump one side and is connected through second linkage pivot and being connected, the one end of linkage lead screw is rotated with the connecting plate top that constitutes another connecting frame through the third linkage pivot and is connected, and the other end rotates with the second linkage pivot to be connected.
Further, a safety arrangement for tower crane hoist engine, wherein drive unit is including adapter sleeve, drive shaft, actuating lever and hydraulic pressure bracing piece, the hydraulic pressure bracing piece is equipped with two, adapter sleeve and first linkage pivot swing joint, the upper end of drive shaft is connected with the bottom of adapter sleeve, the lower extreme of drive shaft with actuating lever fixed connection, the upper end of two hydraulic pressure bracing pieces is the both ends fixed connection of vertical state and actuating lever, its lower extreme with the hydraulic pressure swing arm fixed connection of hydraulic pressure oil pump under the effect of hydraulic pressure oil pump, drive link gear's motion state through hydraulic pressure swing arm.
Furthermore, the safety protection device for the tower crane winch of the utility model is characterized in that two braking mechanisms are provided, and the two braking mechanisms are symmetrically distributed on two sides of the braking mechanism; the base is composed of two rectangular plates and a connecting plate connected with the two rectangular plates, and lightening grooves are formed in the rectangular plates.
Adopt a safety arrangement for tower crane hoist engine, compare with prior art, its effective effect lies in: owing to be equipped with brake mechanism, utilize the braking pivot to be connected with the reel axle, at the tower crane operation in-process, when the hoist engine abnormal conditions appears, start hydraulic oil pump, through linkage control brake mechanism's brake state, the braking pivot is under brake mechanism's effect to the realization is controlled the reel axle in the hoist engine on the tower crane, prevents that it from continuing to rotate, drives wire rope and continues the problem of tensile or retrieving appearing, has reduced the safety risk, discharges the potential safety hazard. Adopt safety arrangement, can prevent effectively that the reel axle from continuing pivoted problem appearing, have simple structure, operation and simple to operate, its commonality is good, safe and reliable has higher practical value and spreading value.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
fig. 3 is a schematic structural view of the telescopic bracket of the present invention;
fig. 4 is a schematic structural view of the brake mechanism of the present invention;
fig. 5 is a schematic diagram of the linkage mechanism of the present invention in a connection state with the hydraulic oil pump.
Shown in the figure: 1-base, 2-supporting base, 3-connecting frame, 31-connecting plate, 32-connecting shaft, 33-connecting screw rod, 34-connecting box, 35-spring, 36-support connecting shaft, 37-bulletproof baffle ring, 4-brake mechanism, 41-brake drum, 42-first brake block, 43-second brake block, 44-first connecting piece, 45-second connecting piece, 46-first connecting rotating shaft, 47-second connecting rotating shaft, 5-brake mechanism, 51-bearing seat, 52-brake rotating shaft, 53-limit boss, 6-linkage mechanism, 61-linkage support, 62-linkage screw rod, 63-first linkage rotating shaft, 64-second linkage rotating shaft, 65-third linkage rotating shaft, 66-connecting sleeve, 67-driving shaft, 68-driving rod, 69-hydraulic supporting rod, 7-hydraulic oil pump and 8-base.
Detailed Description
As shown in fig. 1 to 5, the safety protection device for tower crane hoist according to the present invention comprises a drum shaft for winding a steel rope, the hoist comprises a base 1, a support base 2, a connection frame 3, a brake mechanism 4, a brake mechanism 5, a linkage mechanism 6, a hydraulic oil pump 7 and a base 8, the support base 2 is fixed on the base 1, the lower end of the connection frame 3 is disposed on the support base 2, the brake mechanism 4 is disposed in the connection frame 3, the brake mechanism 5 is disposed on the base 1, one end of the brake mechanism is in transmission connection with the brake mechanism 4, and the other end of the brake mechanism is detachably connected with the drum shaft; the hydraulic oil pump 7 is arranged on the supporting seat 2 through a base 8, and the upper end of a hydraulic movable arm of the hydraulic oil pump 7 is connected with the upper end of the connecting frame 3 through a linkage mechanism 6; the brake mechanism 4 is controlled to be in two working states, namely a braking state and a non-braking state, by the linkage mechanism 6 under the action of the hydraulic oil pump 7.
Further, the safety protection device for the tower crane winch of the utility model is characterized in that the connecting frame 3 comprises four connecting plates 31, two connecting shafts 32 and a telescopic bracket, the four connecting plates 31 are divided into two groups, and form two connecting frames through the corresponding connecting shafts 32, the two connecting frames are symmetrically distributed on two sides of the brake mechanism 4, the bottom of the connecting frame is rotatably connected with the supporting seat 2 through the connecting plates 31 respectively through the corresponding connecting shafts 32, and the upper part of the connecting frame is movably connected with the connecting plates 31 through the telescopic bracket; the brake mechanism 4 comprises a brake drum 41, a first brake block 42 and a second brake block 43 which are arranged close to the outer wall of the brake drum 41 and are opposite, and a first connecting rotating shaft 46 and a second connecting rotating shaft 47 which are connected with the connecting frame 3; a first connecting piece 44 is connected to the outer wall of the first brake block 42, and a second connecting piece (45) is connected to the outer wall of the second brake block 43; the first connecting piece 44 is rotatably connected with one of the connecting frames through a first connecting rotating shaft 46, and the second connecting piece 45 is rotatably connected with the other connecting frame through a second connecting rotating shaft 47; in the process that the hydraulic movable arm of the hydraulic oil pump 7 rises, the connecting frame 3 is driven by the linkage mechanism 6 to rotate to one side close to the brake drum 41 along with the connecting shaft 32, and a telescopic bracket connected with the connecting plate 31 is subjected to compression deformation, at the moment, the first connecting piece 44 and the second connecting piece 45 synchronously rotate along with the connecting frame 3 through the corresponding first connecting rotating shaft 46 and the second connecting rotating shaft 47, so that the first brake pad 42 and the second brake pad 43 are driven to mutually close to the outer wall of the brake drum 41, and braking friction force is generated, so that the brake mechanism 4 is in a braking state; on the contrary, in the process that the hydraulic movable arm of the hydraulic oil pump 7 descends and returns, the link 3 is driven by the linkage mechanism 6 to rotate along with the connecting shaft 32 to the side far away from the brake drum 41, and the telescopic bracket connected with the connecting plate 31 returns from a compressed state, at this time, the first connecting piece 44 and the second connecting piece 45 synchronously rotate along with the link 3 through the corresponding first connecting rotating shaft 46 and the second connecting rotating shaft 47, so as to drive the first brake pad 42 and the second brake pad 43 to mutually keep away from the outer wall of the brake drum 41, and the brake mechanism 4 is in a non-braking state.
Further, a safety arrangement for tower crane hoist engine, wherein telescopic bracket is including connecting screw 33, connecting box 34, spring 35 and leg joint axle 36, leg joint axle 36 is passed through to the rear end of connecting box 34 and is connected with the connecting plate 31 rotation in the linking frame that is close to hydraulic oil pump 7 one side, connecting screw 33's front end is passed through leg joint axle 36 and is connected with the connecting plate 31 rotation in another linking frame, and its rear end passes the preceding terminal surface of connecting box 34 to extend to in the connecting box 34, with the rear end face of connecting box 34 is connected, spring 35 sets up on being located connecting screw 33 in connecting box 34, and the front end of spring 35 still is equipped with along shellproof fender ring 37 of spring 35 synchronous motion.
Further, a safety arrangement for tower crane hoist engine, wherein arrestment mechanism 5 includes bearing frame 51 and sets up the braking pivot 52 in bearing frame 51, bearing frame 51 is fixed in on the base 1, the rear end of braking pivot 52 is fixed in brake drum 41, and its front end extends to the bearing frame 51 outside through the bearing in the bearing frame 51 and is the free end, arrestment mechanism 5 can dismantle through the drum shaft in braking pivot 52 and the hoist engine and link to each other.
Further, a safety arrangement for tower crane hoist engine, wherein the free end of braking pivot 52 is equipped with the spacing boss 53 corresponding with the barrel arbor in the hoist engine, spacing boss 53 sets up to strip block shape or cruciform structure. Through the limiting boss 53, the braking rotating shaft 52 can be conveniently and quickly connected with a drum shaft in the winch, and the purposes of convenience in installation and quick detachment are achieved.
Furthermore, the safety protection device for the tower crane winch of the utility model is characterized in that the linkage mechanism 6 comprises a linkage bracket 61, a linkage screw rod 62, a driving unit and a linkage rotating shaft, the linkage rotating shaft comprises a first linkage rotating shaft 63, a second linkage rotating shaft 64 and a third linkage rotating shaft 65, the driving unit is fixedly connected with a hydraulic movable arm of the hydraulic oil pump 7, the rear end of the linkage bracket 61 is movably connected with the driving unit through a first linkage rotating shaft 63, the front end of the linkage bracket 61 is rotatably connected with the top of a connecting plate 31 which is close to one side of the hydraulic oil pump 7 and forms a connecting frame through a second linkage rotating shaft 64, one end of the linkage screw rod 62 is rotatably connected with the top of the connecting plate 31 constituting the other connecting frame through a third linkage rotating shaft 65, and the other end is rotatably connected with a second linkage rotating shaft 64.
Further, a safety arrangement for tower crane hoist engine, wherein drive unit is including adapter sleeve 66, drive shaft 67, actuating lever 68 and hydraulic support pole 69, hydraulic support pole 69 is equipped with two, adapter sleeve 66 and first linkage pivot 63 swing joint, the upper end of drive shaft 67 is connected with adapter sleeve 66's bottom, the lower extreme of drive shaft 68 with drive lever 68 fixed connection, the upper end of two hydraulic support poles 69 are the both ends fixed connection of vertical state and actuating lever 68, its lower extreme with hydraulic pressure swing arm fixed connection of hydraulic pressure oil pump 7 under hydraulic pressure oil pump 7's the effect, through the motion state that hydraulic pressure swing arm drove link gear 6.
Further, the safety protection device for the tower crane winch of the utility model is characterized in that two braking mechanisms 5 are provided, and the two braking mechanisms 5 are symmetrically distributed on two sides of the braking mechanism 4; the base 1 is composed of two rectangular plates and a connecting plate connected with the two rectangular plates, and the rectangular plates are provided with lightening grooves. Through the lightening groove, the weight of the whole safety protection device can be reduced, and the aim of light weight is fulfilled.
In the practical application process, adopt a safety arrangement for tower crane hoist engine, at first install whole safety arrangement on the tower crane through base 1 to be in the coplanar with the hoist engine in the tower crane, then utilize the braking pivot 52 among the arrestment mechanism 5 and the tip of the reel axle in the hoist engine to link to each other the free end of braking pivot 52 is equipped with the spacing boss 53 corresponding with the reel axle in the hoist engine, spacing boss 53 sets up to strip shape or cruciform structure. Through the limiting boss 53, the braking rotating shaft 52 can be conveniently and quickly connected with a drum shaft in the winch, and the purposes of convenience in installation and quick detachment are achieved. Simultaneously, hydraulic oil pump 7 can be connected with the control system in the tower crane, utilizes control system to control, perhaps takes the independent control mode to control all can, as long as can realize convenient control can.
In the operation process of the tower crane, the brake mechanism 4 is in a non-braking state, when the winch is in an abnormal condition, the hydraulic oil pump 7 is started by using the control system, the connecting frame 3 is used for controlling the braking state of the brake mechanism 4 through the linkage mechanism 6 in the lifting process of the hydraulic movable arm of the hydraulic oil pump 7, so that the brake mechanism 4 is converted into a braking state from the non-braking state, and the braking rotating shaft 52 is under the action of the brake mechanism 4, so that the drum shaft in the winch on the tower crane is controlled, the drum shaft is prevented from continuously rotating, the steel wire rope is driven to continue to stretch or recover, the safety risk is reduced, and the potential safety hazard is discharged.
In a specific using process, the working principle of the brake mechanism 4 is as follows:
the bottom of the connecting frame 3 is respectively connected with the supporting seat 2 by the connecting plate 31 through the corresponding connecting shaft 32 in a rotating way, and the upper part is movably connected with the connecting plate 31 through the telescopic bracket; in the process of lifting the hydraulic movable arm of the hydraulic oil pump 7, the linkage mechanism 6 drives the connecting frame 3 to rotate towards one side close to the brake drum 41 along with the connecting shaft 32, and causes the telescopic bracket connected with the connecting plate 31 to generate compression deformation, at this time, the first connecting piece 44 and the second connecting piece 45 synchronously rotate along with the connecting frame 3 through the corresponding first connecting rotating shaft 46 and the second connecting rotating shaft 47, so as to drive the first brake pad 42 and the second brake pad 43 to mutually close to the outer wall of the brake drum 41, thereby generating braking friction force and enabling the brake mechanism 4 to be in a braking state;
on the contrary, in the process of descending and returning the hydraulic movable arm of the hydraulic oil pump 7, the link mechanism 6 drives the connecting frame 3 to rotate along with the connecting shaft 32 to the side far away from the brake drum 41, and the telescopic bracket connected with the connecting plate 31 is used for returning from a compressed state, at this time, the first connecting piece 44 and the second connecting piece 45 synchronously rotate along with the connecting frame 3 through the corresponding first connecting rotating shaft 46 and the second connecting rotating shaft 47, so as to drive the first brake pad 42 and the second brake pad 43 to be far away from the outer wall of the brake drum 41, and thus the brake mechanism 4 is in a non-braking state.
To sum up, adopt safety arrangement, can prevent effectively that the reel axle from continuing pivoted problem to appear, have simple structure, operation and simple to operate, its commonality is good, and safe and reliable has higher practical value and spreading value.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and changes, and any modifications, equivalent replacements, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a safety arrangement for tower crane hoist engine, the hoist engine is including the barrel arbor that is used for winding the steel rope, its characterized in that: the safety protection device comprises a base (1), a supporting seat (2), a connecting frame (3), a brake mechanism (4), a brake mechanism (5), a linkage mechanism (6), a hydraulic oil pump (7) and a base (8), wherein the supporting seat (2) is fixed on the base (1), the lower end of the connecting frame (3) is arranged on the supporting seat (2), the brake mechanism (4) is arranged in the connecting frame (3), the brake mechanism (5) is arranged on the base (1), one end of the brake mechanism is in transmission connection with the brake mechanism (4), and the other end of the brake mechanism is detachably connected with the drum shaft; the hydraulic oil pump (7) is arranged on the supporting seat (2) through a base (8), and the upper end of a hydraulic movable arm of the hydraulic oil pump (7) is connected with the upper end of the connecting frame (3) through a linkage mechanism (6); the brake mechanism (4) is controlled to be in two working states, namely a braking state and a non-braking state, by the linkage mechanism (6) under the action of the hydraulic oil pump (7).
2. The safety protection device for the tower crane winch according to claim 1, wherein: the connecting frame (3) comprises four connecting plates (31), two connecting shafts (32) and a telescopic support, the four connecting plates (31) are divided into two groups, two connecting frames are formed by the corresponding connecting shafts (32), the two connecting frames are symmetrically distributed on two sides of the brake mechanism (4), the bottom of each connecting frame is rotatably connected with the supporting seat (2) through the corresponding connecting shaft (32) by the connecting plate (31), and the upper part of each connecting frame is movably connected with the corresponding connecting plate (31) through the telescopic support; the brake mechanism (4) comprises a brake drum (41), a first brake pad (42) and a second brake pad (43) which are arranged close to the outer wall of the brake drum (41) and are opposite to each other, and a first connecting rotating shaft (46) and a second connecting rotating shaft (47) which are connected with the connecting frame (3); a first connecting piece (44) is connected to the outer wall of the first brake pad (42), and a second connecting piece (45) is connected to the outer wall of the second brake pad (43); the first connecting piece (44) is rotationally connected with one of the connecting frames through a first connecting rotating shaft (46), and the second connecting piece (45) is rotationally connected with the other connecting frame through a second connecting rotating shaft (47); in the process that a hydraulic movable arm of the hydraulic oil pump (7) rises, the connecting frame (3) is driven by the linkage mechanism (6) to rotate towards one side close to the brake drum (41) along with the connecting shaft (32) and to cause a telescopic support connected with the connecting plate (31) to generate compression deformation, and at the moment, the first connecting piece (44) and the second connecting piece (45) synchronously rotate along with the connecting frame (3) through the corresponding first connecting rotating shaft (46) and the second connecting rotating shaft (47) to drive the first brake pad (42) and the second brake pad (43) to mutually approach the outer wall of the brake drum (41), so that braking friction force is generated, and the brake mechanism (4) is in a braking state; on the contrary, link (3) is in the hydraulic swing arm of hydraulic oil pump (7) descends the return in-process, through link gear (6) drive link (3) is followed connecting axle (32) rotates to keeping away from brake drum (41) one side to use the telescopic bracket who is connected with connecting plate (31) by the compression state return, first connecting piece (44) and second connecting piece (45) are connected pivot (47) and are rotated along with link (3) synchronization through corresponding first connection pivot (46) and second, drive first brake block (42) and second brake block (43) keep away from brake drum (41) outer wall each other, make brake mechanism (4) are in non-braking state.
3. The safety protection device for the tower crane winch according to claim 2, wherein: the telescopic support comprises a connecting screw rod (33), a connecting box (34), a spring (35) and a support connecting shaft (36), the rear end of the connecting box (34) is rotatably connected with a connecting plate (31) in a connecting frame close to one side of the hydraulic oil pump (7) through the support connecting shaft (36), the front end of the connecting screw rod (33) is rotatably connected with the connecting plate (31) in the other connecting frame through the support connecting shaft (36), the rear end of the connecting screw rod penetrates through the front end face of the connecting box (34) and extends into the connecting box (34) to be connected with the rear end face of the connecting box (34), the spring (35) is arranged on the connecting screw rod (33) in the connecting box (34), and a bulletproof blocking ring (37) which synchronously moves along with the spring (35) is further arranged at the front end of the spring (35).
4. The safety protection device for the tower crane winch according to claim 2, wherein: the brake mechanism (5) comprises a bearing seat (51) and a brake rotating shaft (52) arranged in the bearing seat (51), the bearing seat (51) is fixed on the base (1), the rear end of the brake rotating shaft (52) is fixed in the brake drum (41), the front end of the brake rotating shaft extends to the outer side of the bearing seat (51) through a bearing in the bearing seat (51) and is a free end, and the brake mechanism (5) is detachably connected with a drum shaft in the winch through the brake rotating shaft (52).
5. The safety protection device for the tower crane winch according to claim 4, wherein: the free end of the braking rotating shaft (52) is provided with a limiting boss (53) corresponding to a drum shaft in the winch, and the limiting boss (53) is of a strip-shaped or cross-shaped structure.
6. The safety protection device for the tower crane winch according to claim 2, wherein: the linkage mechanism (6) comprises a linkage bracket (61), a linkage screw rod (62), a driving unit and a linkage rotating shaft, the linkage rotating shaft comprises a first linkage rotating shaft (63), a second linkage rotating shaft (64) and a third linkage rotating shaft (65), the driving unit is fixedly connected with a hydraulic movable arm of the hydraulic oil pump (7), the rear end of the linkage bracket (61) is movably connected with the driving unit through a first linkage rotating shaft (63), the front end of the linkage bracket (61) is rotationally connected with the top of a connecting plate (31) which is close to one side of the hydraulic oil pump (7) to form a connecting frame through a second linkage rotating shaft (64), one end of the linkage screw rod (62) is rotatably connected with the top of the connecting plate (31) forming the other connecting frame through a third linkage rotating shaft (65), and the other end of the linkage screw rod is rotatably connected with the second linkage rotating shaft (64).
7. The safety protection device for the tower crane winch according to claim 6, wherein: drive unit is including adapter sleeve (66), drive shaft (67), actuating lever (68) and hydraulic support pole (69), hydraulic support pole (69) are equipped with two, adapter sleeve (66) and first linkage pivot (63) swing joint, the upper end of drive shaft (67) is connected with the bottom of adapter sleeve (66), the lower extreme of drive shaft (68) with actuating lever (68) fixed connection, the upper end of two hydraulic support poles (69) are the both ends fixed connection of vertical state and actuating lever (68), its lower extreme with the hydraulic pressure swing arm fixed connection of hydraulic pressure oil pump (7) under the effect of hydraulic pressure oil pump (7), through the motion state that hydraulic pressure swing arm drove link gear (6).
8. The safety protection device for the tower crane winch according to claim 1, wherein: the two braking mechanisms (5) are arranged, and the two braking mechanisms (5) are symmetrically distributed on two sides of the braking mechanism (4); the base (1) is composed of two rectangular plates and a connecting plate connected with the two rectangular plates, and the rectangular plates are provided with lightening grooves.
CN202120921813.XU 2021-04-30 2021-04-30 Safety protection device for tower crane winch Active CN214734067U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120921813.XU CN214734067U (en) 2021-04-30 2021-04-30 Safety protection device for tower crane winch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120921813.XU CN214734067U (en) 2021-04-30 2021-04-30 Safety protection device for tower crane winch

Publications (1)

Publication Number Publication Date
CN214734067U true CN214734067U (en) 2021-11-16

Family

ID=78615467

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120921813.XU Active CN214734067U (en) 2021-04-30 2021-04-30 Safety protection device for tower crane winch

Country Status (1)

Country Link
CN (1) CN214734067U (en)

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