CN209865060U - Anti-rotation device and rescue equipment - Google Patents

Abstract

The utility model relates to a rescue equipment technical field specifically discloses a prevent slewer and rescue equipment. The anti-rotation device comprises a brake base, a brake disc, a brake part and a locking mechanism, wherein the brake base is rotatably sleeved on a transmission shaft, the brake disc is fixedly arranged on the transmission shaft, the brake part is rotatably matched with the brake base, the brake part can rotate between a first brake position and a separation position, and when the brake part is located at the separation position, a first brake tooth on the brake part is separated from a brake tooth groove on the brake disc; when the braking part is located at the first braking position, the first braking teeth are meshed with the braking tooth grooves and can prevent the braking disc from rotating along the first direction, so that the transmission shaft stops rotating, the rope stops rotating immediately, the rescue efficiency can be effectively guaranteed, the positions of the braking part and the braking base are locked through the locking mechanism, the first braking teeth are prevented from being separated from the braking tooth grooves, and the braking safety is further guaranteed. The rescue equipment comprises the anti-rotation device.

Description

Anti-rotation device and rescue equipment

Technical Field

The utility model relates to a rescue equipment technical field especially relates to a prevent slewer and rescue equipment.

Background

The existing fields of engineering construction, wind power generation, ship hoisting, communication construction, bridge construction and the like all relate to high-altitude construction operation. In the process of carrying out high altitude construction, the unexpected condition that constructor falls from the high altitude takes place very easily, endangers constructor's life safety, also very big influence the work efficiency of enterprise simultaneously. In the related technology, the operation safety of constructors is generally ensured through rescue equipment, and by taking the application in engineering buildings as an example, in case of dangerous situations, rescued personnel can slowly fall to the ground from the construction buildings through the rescue equipment to realize self rescue; the rescue equipment can be used for being pulled up to the top layer of the building under the help of rescue personnel, so that the pulling-up rescue is realized.

Existing rescue equipment typically includes a centrifugal governor system, a hand wheel, a transfer shaft, a housing, a one-way lock and a sheave mechanism. The centrifugal speed limiting system is fixedly sleeved on the transmission shaft and is in transmission connection with the rope wheel mechanism, and the shell covers the centrifugal speed limiting system, the rope wheel mechanism and the one-way locking device. When the rescue rope is used, the shell is fixed, and one end of the rope is tied to the rescued person. When the self rescue is carried out through rescue equipment, a rope penetrates through the rope wheel mechanism, the rope wheel mechanism is driven to rotate through the rope, the centrifugal speed limiting system is driven to rotate through the rope wheel mechanism, after the centrifugal speed limiting system rotates to a certain speed, the centrifugal speed limiting system and the shell rub under the action of centrifugal force and limit the rotating speed of the rope wheel mechanism, and then the descending speed of the rope and rescued people is controlled. When the rescue equipment is used for lifting rescue, the rope penetrates through the one-way locking device and penetrates through the rope pulley mechanism, the centrifugal speed limiting system is driven to rotate by rotating the hand wheel, the rope pulley mechanism is further driven to rotate, the centrifugal speed limiting system cannot rub with the shell due to the fact that the rotating speed is low, the rope pulley mechanism upwards lifts the rope, the rope is prevented from suddenly and rapidly sliding downwards due to accidents through the one-way locking device, but in the rescue process, rescuers need to take great effort to grab the rope stably and rotate the hand wheel, fatigue is easily exhausted, and therefore frequent rest is needed. When the person has a rest, the person leaves the hand wheel, and the rope is unidirectionally locked through the unidirectional locking device.

However, in the process of switching the one-way locking device from the unlocking state to the locking state, the rope needs to slide downwards for a certain distance, so that the repeatability of rescue work is caused, and the rescue efficiency is reduced. And, if the one-way locking device fails, the secondary injury of the rescued person will be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a prevent slewer to solve rescue equipment among the prior art when being used for the promotion rescue that makes progress, the rope appears slipping easily and leads to the problem that rescue efficiency is low.

On the one hand, the utility model provides a prevent slewer should prevent slewer and include:

a brake base configured to be sleeved on the transmission shaft;

the brake disc is fixedly arranged on the transmission shaft, and brake tooth grooves are uniformly distributed on the outer peripheral surface of the brake disc;

the braking part is rotatably arranged on the braking base, a first braking tooth is arranged on the braking part, and when the first braking tooth is meshed with the braking tooth groove, the first braking tooth can prevent the braking disc from rotating in a first direction;

and the locking mechanism is used for locking or unlocking the relative positions of the braking member and the braking base.

As a preferable scheme of the rescue equipment, the braking member is further provided with a second braking tooth, when the second braking tooth is engaged with the braking tooth groove, the second braking tooth can prevent the braking disc from rotating in a second direction, and the first direction is opposite to the second direction.

As a preferable scheme of the rescue device, the center of the rotation of the braking element relative to the braking base is O1, the center of the brake disc is O2, the distance between O1 and O2 is L, the radius of the brake disc is R1, the distance between the first braking tooth and O1 is R2, the distance between the second braking tooth and O1 is R3, the second braking tooth and the first braking tooth are oppositely arranged relative to O, R1+ R2 > L, and R1+ R3 > L.

As a preferable scheme of the rescue equipment, the locking mechanism comprises a locking pin and an elastic piece, the elastic piece enables the locking pin to be always abutted against the braking piece, a first locking groove, a second locking groove and a third locking groove are arranged on the outer peripheral surface of the braking piece between the first braking tooth and the second braking tooth at intervals, and the locking pin can be selectively inserted into the first locking groove, the second locking groove or the third locking groove.

As a preferable scheme of the rescue equipment, the outer peripheral surface of the braking member is an arc surface, and the cross sections of the first locking groove, the second locking groove and the third locking groove along the direction perpendicular to the axis of O1 are all arc-shaped.

As the preferred scheme of rescue equipment, the first end of locking round pin sets up to the bulb, and with the braking piece butt, the second end of locking round pin with the elastic component is connected.

As a preferable scheme of the rescue equipment, a conversion shaft is rotatably arranged on the brake base in a penetrating manner, a gear shifting handle is fixedly arranged on the conversion shaft, the brake member is fixedly arranged on the conversion shaft, and the gear shifting handle and the brake member are respectively positioned on two sides of the brake base.

As the preferred scheme of rescue equipment, be equipped with the holding chamber in the braking base, along the central line direction of transmission shaft, one side in holding chamber is equipped with uncovered, the brake disc with the braking piece all is located the holding intracavity.

As a preferable scheme of the rescue equipment, the elastic element is a pressure spring, an installation groove is formed in the brake base, the installation groove is communicated with the accommodating cavity, the pressure spring is located in the installation groove, and the locking pin is abutted against the pressure spring;

the anti-rotation device further comprises a limiting baffle, the limiting baffle is installed on the brake base, the installation groove is close to one side of the opening and is provided with an opening, and the limiting baffle seals the opening.

The utility model also provides a rescue equipment, in transmission shaft and arbitrary above-mentioned scheme prevent slewer, rescue equipment still including install in the hand wheel of transmission shaft one end is installed epaxial centrifugal brake mechanism, with the rope sheave mechanism that centrifugal brake mechanism transmission is connected, the cover is located centrifugal brake mechanism with the outer casing of rope sheave mechanism, and install in the one-way locking ware of casing, the braking base with casing fixed connection, centrifugal brake mechanism with casing selectivity friction fit.

The utility model has the advantages that:

1) the utility model provides a prevent slewer should prevent slewer and include braking base, brake disc, braking piece and locking mechanism. The brake base is rotatably sleeved on the transmission shaft, the brake disc is fixedly installed on the transmission shaft, the brake piece is in rotating fit with the brake base, and when the first brake tooth is meshed with the brake tooth groove, the first brake tooth can prevent the brake disc from rotating along the first direction. Specifically, the braking part can rotate between a first braking position and a separation position, the locking mechanism is used for locking or unlocking the first braking position or the separation position of the braking part, when the braking part is located at the separation position, the first braking tooth on the braking part is separated from the braking tooth groove on the brake disc, and the brake disc can rotate randomly; when the braking piece is located at the first braking position, the first braking tooth is meshed with the braking tooth groove, the first braking tooth can prevent the braking disc from rotating along the first direction, the transmission shaft can be immediately stopped to rotate, the rope can further be immediately stopped to descend, when rescue equipment is used for lifting rescue, rescue efficiency can be effectively guaranteed, the locking mechanism locks the mutual positions of the braking piece located at the first braking position and the braking base, the first braking tooth can be prevented from being separated from the braking tooth groove, and braking safety can be further guaranteed.

2) The utility model provides a rescue equipment, including preventing slewer, hand wheel, transmission shaft, centrifugal brake mechanism, rope sheave mechanism, casing and one-way locking ware, the hand wheel prevents slewer and installs in the transmission shaft and with the casing rigid coupling with the one end rigid coupling of transmission shaft, and centrifugal brake mechanism cover is located on the transmission shaft and is connected with rope sheave mechanism transmission to can selective friction fit with centrifugal brake mechanism, one-way locking ware is installed in the casing, and centrifugal brake mechanism and rope sheave mechanism are still located to the casing cover. When the rescue equipment is used for lifting rescue, the rope penetrates through the one-way locking device and penetrates through the rope pulley mechanism, the rescue personnel rotate the hand wheel to drive the centrifugal brake system to rotate, the rope pulley mechanism is further driven to rotate, the rope pulley mechanism upwards lifts the rope, the rescued personnel are lifted, when the rescue personnel release the hand wheel to have a rest, the transmission shaft is locked through the anti-rotation device, the rope stops rotating immediately, the rope can be effectively prevented from sliding, the rescue efficiency is guaranteed, the anti-rotation device and the one-way locking device form redundant protection, and the safety of the rescue personnel is further guaranteed.

Drawings

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

fig. 2 is a first cross-sectional view of rescue equipment in the embodiment of the present invention;

fig. 3 is an exploded view of a swing preventing device of the rescue equipment in the embodiment of the present invention;

fig. 4 is a front view of the anti-rotation device of the rescue equipment in the embodiment of the present invention;

fig. 5 is a sectional view of the anti-rotation device of the rescue equipment in the embodiment of the present invention;

fig. 6 is a schematic structural view of a locking pin of an anti-rotation device according to an embodiment of the present invention;

fig. 7 is a sectional view of the rescue device in the embodiment of the present invention.

In the figure:

1. a rotation preventing device; 11. a brake base; 12. a brake disc; 121. braking tooth grooves; 13. a stopper; 131. a first brake tooth; 132. a second brake tooth; 133. a first locking groove; 134. a second locking groove; 135. a third locking groove; 14. a locking mechanism; 141. a locking pin; 142. an elastic member; 15. a conversion shaft; 16. a gear shifting handle; 17. a nylon gasket; 18. a fluted disc gasket; 19. a limit baffle;

2. a hand wheel; 3. a drive shaft; 4. a centrifugal braking mechanism; 5. a sheave mechanism; 6. a housing; 7. a one-way latch; 8. a rope.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of rescue equipment in an embodiment of the present invention; fig. 2 is a first cross-sectional view of rescue equipment in the embodiment of the present invention; fig. 3 is an exploded view of the anti-rotation device 1 of the rescue equipment in the embodiment of the present invention; fig. 4 is a front view of the anti-rotation device 1 of the rescue equipment in the embodiment of the present invention; fig. 5 is a sectional view of the anti-rotation device 1 of the rescue equipment in the embodiment of the present invention; fig. 6 is a schematic structural diagram of the locking pin 141 of the anti-rotation device 1 according to the embodiment of the present invention; fig. 7 is a sectional view of the rescue device in the embodiment of the present invention. The embodiment provides a rescue equipment, this rescue equipment is including preventing slewer 1, hand wheel 2, transmission shaft 3, centrifugal brake mechanism 4, rope sheave mechanism 5, casing 6 and one-way locking ware 7, hand wheel 2 and the one end rigid coupling of transmission shaft 3, prevent slewer 1 and install on transmission shaft 3 and with casing 6 rigid coupling, centrifugal brake mechanism 4 installs in transmission shaft 3 and is connected with rope sheave mechanism 5 transmission, one-way locking ware 7 is installed in casing 6, and casing 6 covers centrifugal brake mechanism 4 and rope sheave mechanism 5 of locating, the accessible prevents slewer 1 with transmission shaft 3 locking, through centrifugal brake mechanism 4 and the selective friction fit of casing 6.

When self rescue is carried out through rescue equipment, the rope 8 penetrates through the rope pulley mechanism 5, the rope 8 drives the rope pulley mechanism 5 to rotate in the falling process, the rope pulley mechanism 5 drives the centrifugal brake mechanism 4 to rotate, when the rotating speed of the centrifugal brake mechanism 4 reaches a certain speed, the centrifugal brake mechanism 4 and the shell 6 rub with each other, the friction force gradually increases along with the gradual increase of the rotating speed of the centrifugal brake mechanism 4, and when the speed of the centrifugal brake mechanism 4 increases to a certain degree, the uniform speed rotation is kept under the action of the friction force, so that the slow speed falling of the rope 8 can be controlled through the centrifugal brake mechanism 4; when the rescue equipment is used for pulling up for rescue, the rope 8 penetrates through the one-way locking device 7 and penetrates through the rope pulley mechanism 5, rescue workers drive the centrifugal brake mechanism 4 to rotate by rotating the hand wheel 2, then the rope pulley mechanism 5 is driven to rotate, the rope 8 is pulled up by the rope pulley mechanism 5, the rescued workers are pulled up, and the rope 8 can be prevented from suddenly sliding downwards by the one-way locking device 7. No matter save oneself or in pulling up the rescue in-process, all can be through preventing slewer 1 with transmission shaft 3 locking, make it stall at once, pull up the rescue in-process very much, when the personnel of suing and labouring let out hand wheel 2, slewer 1 locking transmission shaft 3 is prevented to the accessible, can prevent effectively that rope 8 from sliding, guarantees rescue efficiency to prevent slewer 1 and one-way locking ware 7 constitution redundant protection, guarantee by the personnel's of rescuing safety.

Referring to fig. 1 and 2, a hand wheel 2 is mounted on one end of a transmission shaft 3, and specifically, the hand wheel 2 is connected to the transmission shaft 3 through an elastic cylindrical pin. When saving oneself through this rescue equipment, need not to use hand wheel 2, can conveniently take off hand wheel 2 through setting up elasticity cylindric lock structure. The elastic cylindrical pin comprises a pre-tightening pin and a pressure spring, a groove is formed in the transmission shaft 3, the pressure spring is located in the groove, the pre-tightening pin is abutted to the pressure spring tightly, one end of the pre-tightening pin can extend out of the groove under the state that the pre-tightening pin is not under the action of external force, and the pre-tightening pin can be pressed into the groove completely under the action of the external force. The hand wheel 2 is arranged on the transmission shaft 3 in a penetrating mode, a clamping groove is formed in the hand wheel 2, the pre-tightening pin can be connected with the clamping groove in a clamped mode, and when the pre-tightening pin is connected with the clamping groove in the clamped mode, the pre-tightening pin and the clamping groove are fixed. Of course, in other embodiments, the hand wheel 2 may be fixed to the transmission shaft 3 by other connection means, such as by bolts, or by screw-fit connection, etc.

Referring to fig. 3 to 5, the anti-rotation device 1 includes a brake base 11, a brake disc 12, a brake element 13, and a locking mechanism 14. The braking base 11 is configured to be sleeved on the transmission shaft 3, that is, the transmission shaft 3 can rotate relative to the braking base 11. The brake disk 12 is fixedly attached to the drive shaft 3, and brake tooth grooves 121 are uniformly distributed on the outer peripheral surface of the brake disk 12. The braking member 13 is rotatably engaged with the braking base 11, and the braking member 13 is provided with a first braking tooth 131, and when the first braking tooth 131 is engaged with the braking tooth groove 121, the first braking tooth 131 can prevent the braking disc 12 from rotating in the first direction. Specifically, the braking member 13 has a first braking position and a separated position, the braking member 13 can rotate between the first braking position and the separated position, when the braking member 13 is located at the first braking position, the first braking teeth 131 are engaged with the braking teeth grooves 121, and the first braking teeth 131 can prevent the brake disc 12 from rotating in the first direction, preferably, when the brake disc 12 rotates in the first direction, the rope 8 descends. When the brake element 13 is located at the separated position, the brake teeth are separated from the brake grooves, and the brake disc 12 can be rotated arbitrarily. The lock mechanism 14 is used to lock or unlock the relative positions of the brake member 13 and the brake base 11 when the brake member 13 is located at the first braking position or the separated position.

It should be noted that, in the present embodiment, the braking tooth grooves 121 are square, but the present invention is not limited to the shape of the braking tooth grooves 121. The transmission shaft 3 is also sleeved with a fluted disc gasket 18, and the fluted disc gasket 18 is positioned between the brake disc 12 and the shell 6.

In this embodiment, the first brake tooth 131 is engaged with the brake tooth groove 121, so that the brake disc 12 can immediately stop rotating in the first direction, and further, the transmission shaft 3, the centrifugal brake mechanism 4, and the sheave mechanism 5 can all stop rotating, so that the rope 8 can immediately stop descending. Particularly, when the braking member 13 is located at the first braking position, the locking mechanism 14 locks the positions of the braking member 13 and the braking base 11, so that the first braking teeth 131 can be prevented from being disengaged from the braking teeth grooves 121, and the braking safety can be further ensured.

Preferably, the braking member 13 is further provided with a second braking tooth 132, and when the second braking tooth 132 is engaged with the braking tooth groove 121, the second braking tooth 132 can prevent the braking disc 12 from rotating in a second direction, which is opposite to the first direction. Specifically, the braking member 13 also has a second braking position, the braking member 13 can rotate between the second braking position and the separated position, when the braking member 13 is located at the second braking position, the second braking teeth 132 are engaged with the braking teeth grooves 121, and the second braking teeth 132 can prevent the brake disc 12 from rotating in a second direction, the first direction being opposite to the second direction, so that the rope 8 can be prevented from ascending or descending by the anti-gyration device 1. When the braking member 13 is located at the second braking position, the locking mechanism 14 is used for locking or unlocking the relative position of the braking member 13 and the braking base 11, and particularly when the braking member is locked, the second braking teeth 132 can be prevented from being disengaged from the braking teeth grooves 121, and the braking safety can be further ensured.

Specifically, the center of rotation of the brake element 13 with respect to the brake base 11 is O1, the center of the brake disc 12 is O2, the distance between O1 and O2 is L, the radius of the brake disc 12 is R1, the spacing between the first braking tooth 131 and O1 is R2, the spacing between the second braking tooth 132 and O1 is R3, the second braking tooth 132 and the first braking tooth 131 are oppositely disposed with respect to O1, R1+ R2 > L, and R1+ R3 > L. It will be appreciated that the braking element 13 is only capable of reciprocating movement and not rotating in a complete revolution along the path from the first braking position to the disengaged position to the second braking position, and that when the braking element 13 is in the first braking position, the brake disc 12 is not capable of moving in a first direction relative to the braking element 13 but is capable of moving in a second direction, and when the braking element 13 is in the second braking position, the brake disc 12 is not capable of moving in a second direction relative to the braking element 13 but is capable of moving in the first direction, i.e. when the braking element 13 brakes the brake disc 12, braking is only performed in one direction, and when the brake disc 12 is moved in the opposite direction, rotation is smooth.

Be equipped with the holding chamber in the braking base 11, along the central line direction of transmission shaft 3, one side in holding chamber is equipped with uncovered, and brake disc 12 and braking piece 13 all are located the holding intracavity. The brake base 11 has an open end fixedly connected to the housing 6, and the open end is closed by the housing 6, so as to protect the brake disc 12 and the brake element 13 in the accommodating cavity, and preferably, lubricating grease is applied to the surfaces of the first brake tooth 131, the second brake tooth 132 and the three brake tooth grooves 121, so as to reduce the wear of the brake element 13 and the brake disc 12.

The locking mechanism 14 includes a locking pin 141 and an elastic member 142, and the elastic member 142 is configured to always drive the locking pin 141 to move to O1, so that the locking pin 141 and the outer peripheral surface of the braking member 13 are always in a pressing state. The elastic member 142 has a first locking groove 133, a second locking groove 134 and a third locking groove 135 spaced apart from each other on an outer circumferential surface thereof, and the first locking groove 133, the second locking groove 134 and the third locking groove 135 are disposed between the first brake tooth 131 and the second brake tooth 132 and spaced apart from each other. The locking pin 141 may be selectively inserted into the first locking groove 133, the second locking groove 134, or the third locking groove 135. Specifically, when the stopper 13 is located at the first stopping position, the locking pin 141 is inserted into the first locking groove 133, when the stopper 13 is located at the separated position, the locking pin 141 is inserted into the second locking groove 134, and when the stopper 13 is located at the second stopping position, the locking pin 141 is inserted into the third locking groove 135. Preferably, the outer circumferential surface of the stopper 13 is a circular arc surface, and the first locking groove 133, the second locking groove 134 and the third locking groove 135 are all arc-shaped in cross section along a direction perpendicular to the axis of O1. The first end of the locking pin 141 is a ball head, the second end of the locking pin 141 is a plane, the first end abuts against the outer peripheral surface of the braking member 13, and the second end is connected with the elastic member 142. By arranging the three locking grooves in an arc surface shape and arranging the matching ends of the locking pin 141 and the locking grooves as ball heads, when the position locking of the braking piece 13 and the brake disc 12 needs to be cancelled, the ball heads can be separated from the locking grooves only by rotating the braking piece 13.

A switching shaft 15 penetrates through the brake base 11, one end of the switching shaft 15 is positioned outside the brake base 11 and is fixedly provided with a gear shifting handle 16, and the brake piece 13 is fixedly arranged on the switching shaft 15. Specifically, be equipped with the mounting hole on the brake base 11, the switching shaft 15 passes the mounting hole, still overlaps on the switching shaft 15 to be equipped with two nylon gaskets 17, and one of two nylon gaskets 17 is located to shift dials between handle 16 and the brake base 11, and another is located the storage tank and laminates with the brake base 11, and the nylon material has stronger wear-resisting characteristic, therefore can prevent to shift and dial the wearing and tearing between handle 16 and the brake base 11. Preferably, the stopper 13 can be keyed to the shift shaft 15, and the shift knob 16 can be coupled to the shift shaft 15 by a resilient cylindrical pin for easy assembly and disassembly.

In this embodiment, the shift lever 16 can be rotated to conveniently control the braking member 13 to switch between the first braking position, the separating position and the second braking position, and also control the locking groove on the braking member 13 to separate from the locking pin 141. It can be understood that, in the present embodiment, the two ends of the switching shaft 15 do not need to be supported and fixed, and the switching shaft 15 can be stably installed on the brake base 11 by being pivoted with the brake base 11. In other embodiments, one end of the converting shaft 15 located in the accommodating cavity may be supported and located by a bearing, and the bearing may be supported by the housing 6 or other structures, or of course, one end of the converting shaft 15 located in the accommodating cavity may be directly pivoted to the housing 6 or other structures.

In this embodiment, the elastic member 142 is a compressed spring, the brake base 11 is provided with a mounting groove, the mounting groove is communicated with the accommodating cavity, the compressed spring is located in the mounting groove, the locking pin 141 is abutted against the compressed spring, and the locking pin 141 is inserted into the mounting groove. The brake base 11 can be directly formed through a casting process, and the mounting groove is preferably a square groove in order to facilitate the design and processing of the brake base 11; in order to facilitate the installation of the pressure spring in the installation groove, an opening is formed in one side, close to the opening, of the installation groove, and the pressure spring can be directly pressed into the installation groove through the opening; in order to prevent the pressure spring from being separated from the mounting groove from the opening, the anti-rotation device 1 further comprises a limit baffle 19, the limit baffle 19 is mounted on the brake base 11, and the limit baffle 19 closes the opening. In other embodiments, the elastic member 142 may also be a tension spring, a torsion spring, or the like.

It is understood that, when the locking pin 141 is inserted into any one of the first locking groove 133, the second locking groove 134 or the third locking groove 135, the relative position of the stopper 13 to the stopper base 11 can be locked by the locking pin 141. Specifically, when the locking pin 141 is inserted into the first locking groove 133 or the third locking groove 135, the braking element 13 cannot rotate, and the braking element 13 is locked to the mutual position of the brake disc 12 by the braking teeth, that is, the mutual position of the brake disc 12 and the brake base 11 is fixed, so that the braking element 13 can perform the unidirectional locking function to the brake disc 12 at this time, and when the locking pin 141 is inserted into the second locking groove 134, the braking element 13 is locked to the mutual position of the brake disc 12 by the braking teeth, the braking element 13 also cannot rotate, but at this time, the brake disc 12 does not directly contact with the braking element 13, so that the brake disc 12 can freely rotate.

The centrifugal brake mechanism 4 (the specific structure of which is not shown in the drawing) comprises a positioning block, a contact finger spring, a friction plate and a friction plate fixing block, the positioning block is fixedly sleeved on the transmission shaft 3, and the positioning block and the transmission shaft 3 can be connected through a key or an elastic cylindrical pin. The friction plate is bonded with the friction plate fixing block, the friction plate fixing block and the positioning block are connected together through the contact finger spring, the positioning block and the gear shaft are fixed through the elastic cylindrical pin and are correspondingly installed in the shell 6, the friction plate fixing block and the friction plate do centrifugal motion relative to the positioning block under the action of centrifugal force in the rotating process of the centrifugal brake mechanism 4, when the rotating speed of the positioning block is increased to a certain degree, the friction plate and the shell 6 rub to generate friction resistance, and therefore the rope 8 can be controlled to slowly descend. In this embodiment, the centrifugal brake mechanism 4 further comprises a first transmission gear mounted on the transmission shaft 3.

The rope wheel mechanism 5 comprises a rope wheel and a second transmission gear (not shown in the drawing), the second transmission gear is pivoted on the shell 6 and meshed with the first transmission gear, the rope wheel is fixedly connected with the second transmission gear, a rope groove is formed in the rope wheel, and the rope 8 penetrates through the rope groove. Tooth-shaped protrusions are uniformly distributed on the side walls of the two sides of the rope groove along the circumferential direction of the rope wheel, and the rope 8 can be tightly grasped through the protrusions, so that the rope 8 is prevented from sliding. Specifically, when carrying out the rescue of pulling up through rescue equipment, rope 8 walks around the upside of rope sheave, owing to be located the below by the rescue personnel, under the action of gravity, rope 8 can be taut in the grooving to rope 8 can be the lug in close contact with of grooving both sides, the protruding extrusion rope 8 of profile of tooth to can make the rope produce certain deformation, the accessible lug makes the rope sheave tighten rope 8 firmly, and can prevent that rope 8 and rope sheave from taking place relative slip.

One-way locking ware 7 includes the locking gear that two are relative and the interval set up, and locking gear pin joint is on casing 6 to two locking gears all with the torsional spring cooperation, all be equipped with a card protruding on two locking gears global, two torsional spring drive two locking gears move to the protruding direction that is close to each other of card, and, two protruding butt that can the butt of card, the protruding extending direction of card is tangent global with the locking tooth. When the locking mechanism is used, the rope 8 penetrates through a gap between the two locking gears, the rope 8 can be abutted to the convex teeth on the outer peripheral surfaces of the two locking gears, and when the rope 8 drives the locking gears to rotate in the same direction as the torsional spring drives the locking gears through the convex teeth, the two clamping protrusions can be pressed on the tight rope 8, so that the one-way locking function is realized; when the rope 8 drives the rotation direction of the locking gear through the convex teeth and the rotation direction of the torsion spring driving locking gear is opposite, the two clamping protrusions are away from each other, and the rope 8 can smoothly pass through. It is understood that the force applied to the lock gear by the rope 8 through the convex teeth is larger than the force applied to the lock gear by the torsion spring, and the lock gear cannot be rotated in a full turn.

When the rope 8 suddenly moves in the opposite direction and is locked by the one-way locking device 7, the locking gear needs to rotate by a certain angle to play a locking function, so that the rope 8 slides by a distance to one end, and the rescue efficiency is low.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An anti-slewing device for mounting on a transmission shaft (3) of a rescue apparatus, comprising:

a brake base (11) configured to be sleeved on the transmission shaft (3);

the brake disc (12) is fixedly arranged on the transmission shaft (3), and brake tooth grooves (121) are uniformly distributed on the outer peripheral surface of the brake disc (12);

the braking piece (13) is rotatably arranged on the braking base (11), a first braking tooth (131) is arranged on the braking piece (13), and when the first braking tooth (131) is meshed with the braking tooth groove (121), the first braking tooth (131) can prevent the braking disc (12) from rotating along a first direction;

and a locking mechanism (14) for locking or unlocking the relative position of the braking member (13) and the braking base (11).

2. The anti-rotation device according to claim 1, wherein the braking member (13) is further provided with a second braking tooth (132), and when the second braking tooth (132) is engaged with the braking tooth groove (121), the second braking tooth (132) can prevent the brake disc (12) from rotating in a second direction, and the first direction is opposite to the second direction.

3. The anti-rotation device according to claim 2, characterized in that the brake element (13) rotates relative to the brake base (11) at a center of O1, the brake disc (12) at a center of O2, a distance between O1 and O2 is L, the brake disc (12) at a radius of R1, the first braking tooth (131) and O1 at a distance of R2, the second braking tooth (132) and O1 at a distance of R3, the second braking tooth (132) and the first braking tooth (131) being disposed opposite to each other with respect to O1, R1+ R2 > L, and R1+ R3 > L.

4. The anti-rotation device according to claim 3, wherein the locking mechanism (14) comprises a locking pin (141) and an elastic member (142), the elastic member (142) enables the locking pin (141) to be always abutted against the braking member (13), a first locking groove (133), a second locking groove (134) and a third locking groove (135) are formed in the outer peripheral surface of the braking member (13) at intervals between the first braking tooth (131) and the second braking tooth (132), and the locking pin (141) can be selectively inserted into the first locking groove (133), the second locking groove (134) or the third locking groove (135).

5. The anti-rotation device according to claim 4, wherein the outer peripheral surface of the stopper (13) is a circular arc surface, and the first locking groove (133), the second locking groove (134), and the third locking groove (135) are each arc-shaped in cross section in a direction perpendicular to the axis of O1.

6. The anti-rollback apparatus of claim 4, wherein a first end of the locking pin (141) is configured as a ball and abuts the brake (13), and a second end of the locking pin (141) is connected to the resilient member (142).

7. The anti-rotation device according to any one of claims 4 to 6, wherein a conversion shaft (15) is rotatably inserted into the brake base (11), a shift lever (16) is fixedly mounted on the conversion shaft (15), the braking member (13) is fixedly mounted on the conversion shaft (15), and the shift lever (16) and the braking member (13) are respectively located on two sides of the brake base (11).

8. The anti-rotation device according to claim 4, wherein the brake base (11) is provided therein with a receiving cavity, one side of the receiving cavity is provided with an opening along the center line direction of the transmission shaft (3), and the brake disc (12) and the brake element (13) are both located in the receiving cavity.

9. The anti-rotation device according to claim 8, wherein the elastic member (142) is a compression spring, an installation groove is formed in the brake base (11), the installation groove is communicated with the accommodating cavity, the compression spring is located in the installation groove, and the locking pin (141) abuts against the compression spring;

the anti-rotation device further comprises a limit baffle (19), the limit baffle (19) is installed on the brake base (11), the installation groove is close to one side of the opening and is provided with an opening, and the limit baffle (19) seals the opening.

10. Rescue equipment, characterized in that, including transmission shaft (3) and the anti-gyration device of any one of claims 1-9, the rescue equipment also includes hand wheel (2) installed at one end of the transmission shaft (3), centrifugal brake mechanism (4) installed on the transmission shaft (3), rope wheel mechanism (5) in transmission connection with the centrifugal brake mechanism (4), casing (6) covering the centrifugal brake mechanism (4) and the rope wheel mechanism (5), and one-way locking device (7) installed on the casing (6), the braking base (11) and the casing (6) are fixedly connected, the centrifugal brake mechanism (4) and the casing (6) are in selective friction fit.