CN212631493U - Rope locking device - Google Patents
Rope locking device Download PDFInfo
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- CN212631493U CN212631493U CN202021727465.4U CN202021727465U CN212631493U CN 212631493 U CN212631493 U CN 212631493U CN 202021727465 U CN202021727465 U CN 202021727465U CN 212631493 U CN212631493 U CN 212631493U
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Abstract
The utility model relates to a safety protection technical field provides a rope locking means, include: the friction wheel pair comprises two friction wheels with opposite friction surfaces, and the friction surfaces of the two friction wheels are used for clamping the rope; the centrifugal piece is suitable for being switched between a centrifugal state and a reset state along with the change of the rotating speed of the friction wheel pair; the centrifugal piece is suitable for reaching a working position to drive the main shaft to rotate in a centrifugal state, and the centrifugal piece is separated from the main shaft in a reset state; the two friction wheels are respectively arranged at two ends of the main shaft; the locking piece is positioned between the two friction surfaces, arranged on the main shaft and suitable for rotating along with the main shaft, so that the locking piece can be switched between a locking state and an unlocking state of the rope; in the centrifugal state, the main shaft is suitable for driving the locking piece to move to the locking state; in the reset state, the lockout member is in the unlocked state. The rope locking device can effectively avoid locking failure, guarantee the reliability of the falling protection function and avoid casualties.
Description
Technical Field
The utility model relates to a safety protection technical field especially relates to rope locking means.
Background
At present, along with social development, operation and high-altitude transportation under a high-altitude climbing environment are very common, and in the industries of wind power, buildings and the like, in order to ensure the construction safety of high-altitude workers, anti-falling equipment with reliable performance must be installed. The rope locking device is an important anti-falling device for connecting a rope and an operator in the industry, and the operator can freely and safely walk along the length direction of the rope through the rope locking device. The prior art cord lock arrangement is constructed as shown in fig. 1-4. In fig. 1 and 2, when a person falls, the safety hook 003 pulls the driving rod 001, so that the lock surface on the driving rod 001 swings towards the rope direction until the lock surface is tightly bitten by the rope, and a locking effect is achieved, so that the person is prevented from further falling. In fig. 3 and 4, locking piece 002 can be triggered to actuating lever 001 one end for locking piece 002 swings along with the rotation of actuating lever 001 in step, and when the incident that falls takes place, personnel drop down and drive safety hook 003 and remove, so that actuating lever 001 rotates and drives locking piece 002 and wire rope and bite tightly, plays the locking effect.
The rope locking device in the prior art adopts the driving rod 001 as a triggering part of the locking piece, when a falling event occurs, people unconsciously grab the driving rod 001 in a hurry and can just hold the driving rod 001, so that the rope locking device is in a state shown in fig. 5 or fig. 6, the driving rod 001 cannot rotate at the moment, the rope locking device cannot be locked timely, the safety protection on the people is further lost, and the major accident of life injury and death is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a rope locking means, it can be when the velocity of motion of the relative rope of friction wheel pair reaches the setting value, drive locking piece and rope locking, and then avoided the protection leak that exists when traditional pendulum rod triggers the locking for protect function is safe and reliable more.
According to the utility model discloses rope locking means, include:
the friction wheel pair comprises two friction wheels with opposite friction surfaces, and the friction surfaces of the two friction wheels are used for clamping the rope;
the centrifugal piece is suitable for being switched between a centrifugal state and a reset state along with the change of the rotating speed of the friction wheel pair;
the centrifugal piece is suitable for reaching a working position to drive the main shaft to rotate in the centrifugal state, and the centrifugal piece is separated from the main shaft in the reset state; the two friction wheels are respectively arranged at two ends of the main shaft;
the locking piece is positioned between the two friction surfaces, arranged on the main shaft and suitable for rotating along with the main shaft, so that the locking piece is switched between a locking state and an unlocking state of the rope;
in the centrifugal state, the spindle is suitable for driving the locking piece to move to the locking state; in the reset state, the lockout member is in the unlocked state.
According to the utility model discloses rope locking means, centrifugal part switches between centrifugal state and reset state based on the rotational speed of friction wheel pair. When the falling event happens, the rotating speed of the friction wheel pair is high, the centrifugal force of the centrifugal piece is large, then the centrifugal piece is switched to the centrifugal state, the spindle is driven to move, the locking piece is switched to the locking state under the action of the spindle, and the safety of personnel is guaranteed. The rope locking device can effectively solve the problem that locking failure caused by external factors can be avoided, the reliability of the falling protection function is guaranteed, the lifting equipment with the rope locking device is safer to use, and casualties can be avoided.
According to the utility model discloses an embodiment still includes:
the rolling sleeves correspond to the friction wheels one by one and are coaxially arranged with the friction wheels, and the rolling sleeves are suitable for rotating along with the friction wheels;
the centrifugal piece is arranged on the roller sleeve.
According to an embodiment of the present invention, a mounting hole is formed in the center of the friction wheel, and a first limit portion is formed in the mounting hole;
the roller is provided with a second limiting part, and the first limiting part is matched with the second limiting part, so that the roller rotates along with the friction wheel.
According to the utility model discloses an embodiment still includes:
the roller components correspond to the friction wheels one by one and are coaxially arranged with the friction wheels, and each roller component comprises a roller body and an end cover which is arranged at the end part of the roller body and rotates along with the roller body; the roller body is sleeved outside the roller sleeve, and a first step surface is formed on the inner surface of the roller body;
the centrifugal piece is a centrifugal throw block, the centrifugal throw block is arranged between the roller sleeve and the roller, a first end of the centrifugal throw block is hinged to the roller sleeve, and a second end of the centrifugal throw block is provided with a second step surface; the first step surface and the second step surface are in limit fit in the centrifugal state, and the first step surface and the second step surface are separated in the reset state; the second end of the centrifugal throw block is connected with a tension spring, the tension spring is in a stretching state in the centrifugal state, and the tension spring is in a natural state in the reset state;
the two ends of the main shaft are arranged on the end covers and are suitable for rotating along with the end covers.
According to the utility model discloses an embodiment, the tip of cylinder body is formed with the lock lug, the end cover be formed with lock lug complex lock groove, so that the end cover follows the cylinder body rotates.
According to the utility model discloses an embodiment still includes:
the bearing comprises a bearing inner ring, and the roller is arranged on the bearing inner ring.
According to the utility model discloses an embodiment still includes:
a protective case including a first case and a second case;
the first end of the first pressure spring is mounted on the inner wall of the first shell, and the second end of the first pressure spring is abutted against the rope clamping device, so that the rope is clamped by the rope clamping device and the friction wheel pair;
the friction wheel pair is mounted between the first housing and the second housing.
According to an embodiment of the present invention, a second compression spring is mounted between the first housing and one of the friction wheels, and between the second housing and the other of the friction wheels, and the second compression spring is compressed to press the rope toward the friction wheels.
According to an embodiment of the present invention, the friction wheel comprises a friction wheel piece and friction teeth formed at an outer edge of the friction wheel piece, and a thickness of the friction teeth gradually increases toward a center direction of the friction wheel piece.
According to the utility model discloses an embodiment, the locking piece including the suit in the installation department of main shaft and connection the friction lock portion of installation department.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a prior art cord locking device operating when the drive rod and cord are engaged;
FIG. 2 is a schematic view of the prior art cord locking apparatus operating when the drive rod and cord are released;
FIG. 3 is a schematic view of the prior art cord locking apparatus in an operating condition with the lock block and cord disengaged;
FIG. 4 is a schematic view of a prior art cord lock arrangement in an operative condition with the lock block engaged with the cord;
fig. 5 is a schematic view of a prior art cord lock arrangement including a locking block in an operational condition due to a malfunction in the event of a fall;
fig. 6 is a schematic view of the prior art cord lock arrangement in an operative condition due to malfunction in the event of a fall;
fig. 7 is a schematic view of the assembly relationship between the cord locking apparatus and the cord according to the embodiment of the present invention;
fig. 8 is a schematic partial exploded view of a cord lock apparatus in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of the assembled relationship between the locking member and the spindle according to an embodiment of the present invention;
fig. 10 is a schematic view of the assembly relationship of the friction wheel pair according to the embodiment of the present invention;
FIG. 11 is a schematic view showing the assembly relationship between the friction wheel, the roller assembly and the spindle according to the embodiment of the present invention;
figure 12 is a schematic illustration of the friction surface and rope contact configuration of an embodiment of the present invention;
fig. 13 is a schematic view of the installation of one of the cord lock devices according to an embodiment of the present invention;
fig. 14 is a schematic view of another cord lock arrangement of an embodiment of the present invention;
fig. 15 is a schematic view of the installation of yet another cord locking apparatus in accordance with an embodiment of the present invention;
fig. 16 is a schematic view of the installation of yet another cord locking apparatus in accordance with an embodiment of the present invention;
reference numerals:
001. a drive rod; 002. a locking block; 003. a safety hook;
10. a swing rod; 11. a locking member; 111. sleeving a hole; 112. a first plane; 100. a rope;
20. a speed measuring component; 21. a friction wheel; 211. mounting holes; 212. a first limiting surface; 213. friction teeth; 22. a main shaft; 221. a second plane; 222. a fourth limiting surface; 23. centrifuging and throwing blocks; 231. a fixing hole; 232. a second hinge hole; 24. a tension spring; 25. rolling; 251. a second limiting surface; 252. a first hinge hole; 26. a drum body; 261. buckling the convex block; 27. a bearing; 28. an end cap; 281. buckling the groove; 282. a through hole; 283. a third limiting surface; 29. a pin shaft;
30. a rope clamping device; 31. a base;
40. a first housing; 50. a second housing;
60. a second pressure spring;
70. a first compression spring.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Referring to fig. 7 to 16, a rope locking apparatus according to an embodiment of the present invention includes a friction wheel pair, a centrifugal member, a main shaft 22, and a locking member 11. The friction wheel pair comprises two friction wheels 21 with opposite friction surfaces, and the friction surfaces of the two friction wheels 21 are used for clamping the rope 100; the centrifugal piece is suitable for being switched between a centrifugal state and a reset state along with the change of the rotating speed of the friction wheel pair; in the centrifugal state, the centrifugal element is suitable for reaching a working position to drive the main shaft 22 to rotate, and in the reset state, the centrifugal element is separated from the main shaft 22; the locking member 11 is located between the two friction surfaces and the locking member 11 is arranged on the spindle 22, whereby the locking member 11 can be rotated with the spindle 22 so that the locking member 11 is switched between a locked state and an unlocked state with the rope 100. When the centrifugal piece is in the centrifugal state, the spindle 22 can drive the locking piece 11 to move to the locking state; when the centrifugal element is in the reset state, the locking element 11 is in the unlocked state.
According to the utility model discloses rope locking means, centrifugal part switches between centrifugal state and reset state based on the rotational speed of friction wheel pair. When the falling accident happens, the rotating speed of the friction wheel pair is high, the centrifugal force of the centrifugal piece is large, and then the centrifugal piece is switched to a centrifugal state. When the centrifugal piece in the centrifugal state reaches the working position, the spindle 22 can be driven to move, the locking piece 11 is switched to the locking state under the action of the spindle 22, and the safety of personnel is guaranteed. The rope locking device can effectively solve the problem that locking failure caused by external factors can be avoided, the reliability of the falling protection function is guaranteed, the lifting equipment with the rope locking device is safer to use, and casualties can be avoided.
According to the utility model discloses an embodiment, the rotational speed of friction wheel pair can reflect the speed of present tenesmus. When the falling speed is too fast, the set speed is reached, the friction wheel pair can drive the centrifugal piece to be switched to a centrifugal state, and the locking of the locking piece 11 and the rope 100 is realized. For example, when the rope locking device is installed between the rope 100 and the operator, once the operator accidentally falls, the operator who is falling with higher speed at this time may drive the friction wheel pair to rotate with higher speed relative to the rope 100 until the friction wheel pair reaches a set speed, and at this time, the centrifugal piece drives the main shaft 22 to rotate, and the main shaft 22 drives the locking piece 11 to realize locking, so as to prevent the operator from continuing to fall. Wherein the rope locking means comprises a safety catch 003 for engaging with an operator when the rope locking means is mounted between the rope 100 and the operator. Of course, the rope locking means can also be installed between the rope 100 and the elevator (or other hoisting means than an elevator).
According to the embodiment of the present invention, "with the locked state and the unlocked state of the rope 100" refer to respectively: the locking member 11 is locked to the rope 100, and thus, there is a case where the relative movement between the locking member 11 and the rope 100 is very resistant or even impossible, and there is little or no resistance to the relative movement between the locking member 11 and the rope 100.
According to the utility model discloses an "at centrifugal state, main shaft 22 is suitable for and drives locking piece 11 and move to locking state", and what indicate is that centrifugal piece can move to operating position under centrifugal state, and then the centrifugal piece that reaches operating position can drive main shaft 22 and move to do not require the centrifugal piece just can drive main shaft 22 motion as long as be in centrifugal state. For example, a threshold value may be set for the centrifugal force of the centrifugal member, and when the centrifugal member is in the threshold state but the centrifugal force does not reach the threshold value, no power transmission may be performed between the centrifugal member and the drive.
Referring to fig. 8, a rope locking apparatus according to an embodiment of the present invention includes a roller 25. Wherein, the rollers 25 correspond to the friction wheels 21 one by one and are coaxially arranged with the friction wheels 21, and the rollers 25 are suitable for rotating with the friction wheels 21. That is, the rollers 25 are two corresponding to the case where the friction wheel 21 is two, and the rollers 25 rotate in synchronization with the friction wheel 21. On the basis, the centrifugal piece is arranged on the roller sleeve 25, and then the friction wheel 21 can drive the centrifugal piece to rotate through the roller sleeve 25, so that the centrifugal piece is switched to a centrifugal state when the rotating speed reaches a set value.
In one embodiment, in order to enable the friction wheel 21 to drive the roller 25 to rotate, a mounting hole 211 is formed in the center of the friction wheel 21, and a first limiting part is formed in the mounting hole 211; the roller 25 is formed with a second limit portion, and the first limit portion and the second limit portion cooperate to allow the roller 25 to rotate with the friction wheel 21. For example, the first position-limiting portion may be a first position-limiting surface 212 formed on the sidewall of the mounting hole 211, and the second position-limiting portion may be a second position-limiting surface 251 formed on the outer surface of the roller 25. In order to ensure that the inner surface of the mounting hole 211 and the outer surface of the roller 25 are uniformly stressed, the number of the first limiting surfaces 212 and the number of the second limiting surfaces 251 can be multiple and are in one-to-one correspondence. When the first limiting surfaces 212 and the second limiting surfaces 251 are respectively provided in plurality, the plurality of first limiting surfaces 212 are uniformly arranged along the circumferential direction of the mounting hole 211, and similarly, the second limiting surfaces 251 are uniformly arranged along the outer surface of the roller sleeve 25.
In order to ensure that the roller 25 rotates along with the friction wheel 21, besides the arrangement of the first limit part and the second limit part which are matched in various structures, the roller 25 and the friction wheel 21 can be directly and integrally formed, or the roller 25 and the friction wheel 21 can be fixed together in a welding or threaded connection mode. When the friction wheel 21 and the roller sleeve 25 are matched through the first limiting part and the second limiting part, the roller sleeve can be conveniently disassembled and assembled.
It should be noted that the roller 25 may not be provided, for example, the centrifugal piece is directly mounted on the friction wheel 21, so that the friction wheel 21 rotates to drive the centrifugal piece to rotate. For example, the centrifugal member is hinged to the friction wheel 21, and the centrifugal member can be switched to the centrifugal state by the centrifugal force of the friction wheel 21.
According to the utility model discloses an embodiment, rope locking means still includes the drum assembly. The roller assemblies and the friction wheels 21 are in one-to-one correspondence and are coaxially arranged with the friction wheels 21, that is, two roller assemblies are provided when two friction wheels 21 are provided. The roller assembly comprises a roller body 26 and an end cover 28 which is arranged at the end part of the roller body 26 and rotates along with the roller body 26; the roller body 26 is sleeved outside the roller sleeve 25, and the main shaft 22 is mounted on the end cover 28 and is adapted to rotate with the end cover 28.
In this case, the centrifuge transfers motion through the drum body 26 to the end cap 28 and through the end cap 28 to the main shaft 22. That is, when the centrifugal member is in the centrifugal state, the roller body 26 is rotated, and the end cap 28 is rotated. When the centrifugal element is in the reset state, the centrifugal element engages the outer surface of the roller 25.
In one embodiment, the roller assembly is located outside of the friction wheel 21. The outer side of the friction wheel 21 is the side facing away from the other friction wheel 21. Referring to fig. 8, the outer side of the left friction wheel 21 is the left side thereof, and the outer side of the right friction wheel 21 is the right side thereof. Under this kind of condition, the space between two friction pulley 21 is compacter, and then can be convenient for two friction surface clamping ropes 100, when guaranteeing rope locking means along rope 100 up-and-down motion, the relative rope 100 of friction pulley 21 rolls, avoids appearing skidding. Of course, the roller assembly may be disposed inside the friction wheel 21.
In one embodiment, the inner surface of the roller body 26 is formed with a first step surface; the centrifugal piece is a centrifugal thrower 23, and a second step surface is formed on the surface of the centrifugal thrower 23 facing the roller body 26. Specifically, the centrifugal throw block 23 is installed between the roller sleeve 25 and the roller 26, a first end of the centrifugal throw block 23 is hinged to the roller sleeve 25, and a second end of the centrifugal throw block 23 is formed with a second step surface. In the centrifugal state, the first step surface and the second step surface are in limit fit, so that the centrifugal swing block 23 can drive the roller body 26 to rotate. In the reset state, the first step surface and the second step surface are disengaged, and thus the drum 26 is hardly rotated at this time, and thus the cover 28 and the spindle 22 are hardly rotated, so that the lock member 11 is in the unlocked state. Of course, the structural form of the centrifugal member is not limited by the examples herein, for example, the centrifugal member may also be in the form of a centrifugal rod, and when the rotation speed of the roller sleeve 25 reaches a set speed, a limit fit is formed between the centrifugal rod and the roller 26, so that the roller sleeve 25 drives the roller 26 to rotate through the centrifugal member; alternatively, the centrifugal member may take other forms. In addition, the matching between the first step surface and the second step surface can ensure the structural strength of the position for limiting and matching, and obviously, the mode for limiting and matching is not limited to the matching of the step surfaces.
In one embodiment, referring to fig. 8, the centrifugal thrower 23 is two and is disposed along the circumference of the roller 25; wherein the second end of each centrifugal throw 23 is connected to the hinge of the first end of the other centrifugal throw 23 by a tension spring 24. And then through the setting of extension spring 24, guarantee that centrifugal flail piece 23 can automatic re-setting, guarantee that rope locking means can normally go up and down along rope 100 under the ordinary circumstances, only when the speed of rope locking means surpassed normal speed, just drive locking piece 11 and rope 100 locking. Specifically, the second end of the centrifugal swing block 23 moves away from the roller 25 under the action of centrifugal force, and the tension spring 24 is stretched. When the speed of the roller 25 is reduced, once the restoring force of the tension spring 24 is greater than the centrifugal force of the second end of the centrifugal throw block 23, the second end of the centrifugal throw block 23 moves towards the direction close to the roller 25 under the restoring force of the tension spring 24, so that no motion transmission is performed between the centrifugal throw block 23 and the inner surface of the roller 26.
In one embodiment, two centrifugal flappers 23 surround the outside of the roller sleeve 25, and the forces applied to the two centrifugal flappers 23 are substantially the same, so that when the centrifugal flappers 23 rotate the roller 26, the roller 26 is uniformly stressed. Of course, the number of centrifugal throwers 23 is not limited to the examples given herein, for example, the number of centrifugal throwers 23 may be increased in order to increase the force-receiving area between the centrifugal member and the drum 26.
Herein, the "second end of the centrifugal block 23" is a relative concept of "first end of the centrifugal block 23". In fig. 8, the area where the centrifugal block 23 and the roller 25 are hinged is the first end of the centrifugal block 23, and the area located downstream of the first end of the centrifugal block 23 in the counterclockwise direction can be referred to as the second end of the centrifugal block 23. For example, the second step surface in fig. 8 is formed at a middle position of the centrifugal thrower 23, and the middle position may also be defined as a second end of the centrifugal thrower 23.
Referring to fig. 8, the roller sleeve 25 has two bosses symmetrically disposed corresponding to the centrifugal thrower 23, and first ends of the two centrifugal throwers 23 are respectively hinged to one boss through a pin 29. The centrifugal throwing block 23 can be conveniently installed through the arrangement of the lug boss.
In one embodiment, an arc-shaped mounting groove is formed on the inner surface of the centrifugal block 23, so that the boss is at least partially embedded in the arc-shaped mounting groove, and interference between the centrifugal block 23 and the boss is avoided. On the basis, the first hinge hole 252 on the boss corresponds to the second hinge hole 232 on the centrifugal thrower 23, and the pin 29 can sequentially pass through the two hinge holes 232 and the first hinge hole 252. In addition, a first end of the tension spring 24 is installed on the pin 29, and a second end of the tension spring 24 passes through the through hole of the other centrifugal block 23 and is fixed by a fixing shaft passing through the fixing hole 231. In this case, the extension spring 24 is easily attached and detached. Of course, in order to realize the installation of the tension spring 24, the penetrating hole, the fixing shaft and the like are not necessary components, and the tension spring 24 and the centrifugal throw block 23 can also be fixed in other modes.
In one embodiment, the roller body 26 and the end cap 28 are engaged, for example, a engaging protrusion 261 is formed on the end of the roller body 26 facing the end cap 28, and a engaging groove 281 is formed on the end cap 28. The positions of the fastening protrusion 261 and the fastening groove 281 may be interchanged, that is, the fastening groove 281 is formed at the end of the roller body 26, and the fastening protrusion 261 is formed at the end cover 28. Of course, the roller body 26 and the end cover 28 may be integrally formed to ensure that the roller body 26 can drive the end cover 28 to rotate, or the roller body 26 and the end cover 28 may also transmit motion through other matching limiting parts.
In one embodiment, a through hole 282 is formed in end cap 28, and spindle 22 is mounted to through hole 282. The through hole 282 may be a non-circular hole, that is, a third position-limiting surface 283 is formed on the through hole 282 for assembling the spindle 22 on the end cover 28; the main shaft 22 comprises a non-circular section, the non-circular section is formed with a fourth limiting surface 222, the third limiting surface 283 is matched with the fourth limiting surface 222 in structure, and the main shaft 22 can be guaranteed to rotate when the end cover 28 rotates through the matching between the non-circular hole and the non-circular section. And in this case the end cap 28 and the main shaft 22 are easily disassembled. Of course, the end cap 28 and the main shaft 22 may be fixed by a screw connection or other connection in order to allow the end cap 28 to rotate the main shaft 22.
According to the utility model discloses an embodiment, rope locking means includes speed measuring component 20, and wherein speed measuring component 20 includes parts such as friction wheel pair, roller 25, centrifugal flail piece 23, drum set spare and main shaft 22.
In one embodiment, the cord lock apparatus further comprises a bearing 27, the bearing 27 comprising an inner race, the drum 26 being mounted to the inner race.
In one embodiment, the cord locking apparatus further comprises a protective housing, a first compression spring 70, and a cord holder 30. Wherein the protective case includes a first case 40 and a second case 50; a first end of the first pressure spring 70 is mounted on the inner wall of the first housing 40, and a second end of the first pressure spring 70 abuts against the rope clamping device 30, so that the rope clamping device 30 and the friction wheel pair clamp the rope 100; the friction wheel pair is mounted between the first housing 40 and the second housing 50. According to the utility model discloses rope locking means, because the protective housing includes first casing 40 and second casing 50, and then can conveniently install parts such as friction wheel pair, centrifugation spare, main shaft 22, roller 25 and cylinder 26 to the protective housing in. Moreover, since the second end of the first compression spring 70 abuts against the rope clamping device 30, the rope clamping device 30 applies an acting force to the rope 100, so that the rope 100 is clamped between the two friction wheels 21, and the friction surfaces of the friction wheels 21 are ensured to be fully contacted with the rope 100.
In one embodiment, the rope clamp 30 includes a base 31, and the rope 100 is mounted between the base 31 and the pair of friction wheels.
In one embodiment, referring to fig. 7, a second compression spring 60 is mounted between the first housing 40 and one of the friction wheels 21, and between the second housing 50 and the other friction wheel 21, and the second compression spring 60 is compressed to press the rope 100 toward the friction wheel 21. By the arrangement of the second pressure spring 60, the friction surfaces of the two friction wheels 21 can be ensured to be fully contacted with the rope 100, and the friction force between the friction wheels 21 and the rope 100 can be ensured.
In one embodiment, referring to fig. 7 and 8, the friction wheel 21 includes a friction wheel plate and friction teeth 213 (friction teeth 213, see fig. 12) formed at an outer edge of the friction wheel plate, and a thickness of the friction teeth 213 is gradually increased toward a center of the friction wheel plate. That is, when the rope 100 is moved toward the position between the two friction surfaces by the force of the rope clamp 30, the closer to the center of the friction wheel 21, the smaller the distance between the two corresponding friction teeth 213, and the larger the clamping force applied to the rope 100, the larger the friction force between the rope 100 and the friction wheel 21 is. The number of the friction teeth 213 is plural and is uniformly distributed along the circumferential direction of the friction wheel 21, so as to ensure that the friction wheel 21 is stably subjected to the friction force of the rope 100. Of course, the number, distribution and configuration of the friction teeth 213 are not limited to those exemplified herein. The friction teeth 213 may not be provided, and for example, the friction surface of the friction wheel 21 may be a frosted surface to ensure the magnitude of the friction force.
In one embodiment, the locking member 11 is a locking block including a mounting portion that fits over the spindle 22 and a friction locking portion that connects the mounting portion. The installation department is formed with suit hole 111, and suit hole 111 internal surface is formed with first plane 112 for installation department suit when main shaft 22 with the second plane 221 phase-match on the main shaft 22, guarantee that main shaft 22 can drive the locking piece and rotate. Of course, the form of the locking member 11 is not limited to the distance, as long as it can be used to lock with the rope 100.
Since the lock member 11 is located between the two friction wheels 21 and important parts of the rope lock device such as the friction wheels 21, the rollers 25, the drum assembly, the lock member 11, and the main shaft 22 are rotated almost all around the same axis, the rope lock device occupies a small space. Just the utility model discloses rope locking means's compact structure, motion transmission are reliable, can guarantee safe in utilizationly by the at utmost.
In one embodiment, the rope locking device further comprises a rocker 10, one end of the rocker 10 extends into the protective casing, the other end of the rocker 10 extends out of the protective casing, and the rocker 10 is adapted to be switched between a first position for driving the locking member 11 to lock the rope 100 and a second position for disengaging the locking member 11. The arrangement of the swing rod 10 ensures that the rope locking device has a manual locking function, and further the rope locking device has a double protection function. In general, as long as the swing link 10 is manually swung, the locking member 11 can be driven to move to the locking state, so that the friction wheel pair of the rope locking device cannot roll relative to the rope 100. Under special conditions, even if an operator does not operate the swing rod 10 correctly due to confusion, the friction wheel pair is equivalent to have a speed measuring function, once the friction wheel pair exceeds a set speed during movement, the centrifugal piece controls the locking piece 11 to move to a locking state through the spindle 22, and the locking reliability is ensured.
Referring to fig. 7, the second pressure spring 60 applies a pressure F0 to the friction wheels 21, so that the two friction wheels 21 apply a clamping force F1 to the rope 100. Further, referring to fig. 13 to 16, when the rope locking device rotates along the rope 100, the friction wheel 21 moves in the direction of the downward arrow in fig. 13 relative to the rope 100, and the rope 100 receives the friction force F2, so that the friction wheel 21 rotates counterclockwise along the counterclockwise arrow in fig. 13; due to the matching between the mounting hole 211 on the friction wheel 21 and the roller 25, the friction wheel 21 can drive the roller 25 to make a counterclockwise circular motion. Under the action of centrifugal force, the centrifugal thrower 23 hinged to the roller sleeve 25 through the boss moves around the roller sleeve 25 until a limit fit is formed between the first step surface of the roller body 26 and the second step surface of the centrifugal thrower 23, and at this time, the centrifugal thrower 23 applies an acting force of F3 to the roller body 26. Further, since the roller body 26 and the end cover 28 are engaged by the engaging protrusion 261 and the engaging groove 281, the roller body 26 applies F4 force to the end cover 28 at the engaging protrusion 261 to ensure that the end cover 28 rotates with the roller body 26. The end cover 28 and the main shaft 22 are matched through the non-circular hole and the non-circular section, so that an acting force F5 is generated at the positions of the non-circular hole and the non-circular section, the main shaft 22 is ensured to rotate along with the end cover 28 until the locking piece 11 and the rope 100 are meshed together, and the locking function of the rope locking device is realized.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.
Claims (10)
1. A cord locking apparatus, comprising:
the friction wheel pair comprises two friction wheels (21) with opposite friction surfaces, and the friction surfaces of the two friction wheels (21) are used for clamping the rope (100);
the centrifugal piece is suitable for being switched between a centrifugal state and a reset state along with the change of the rotating speed of the friction wheel pair;
a main shaft (22), in which the centrifuge is suitable to reach a working position to bring about a rotation of the main shaft (22), and in which the centrifuge is disengaged from the main shaft (22); the two friction wheels (21) are respectively arranged at two ends of the main shaft (22);
a locking member (11) located between the two friction surfaces, arranged on the main shaft (22) and adapted to rotate with the main shaft (22) so that the locking member (11) is switched between a locked state and an unlocked state with the rope (100);
in the centrifugal state, the spindle (22) is suitable for driving the locking piece (11) to move to the locking state; in the reset state, the lock (11) is in the unlocked state.
2. The cord lock apparatus of claim 1, further comprising:
the rolling sleeves (25) correspond to the friction wheels (21) one by one and are arranged coaxially with the friction wheels (21), and the rolling sleeves (25) are suitable for rotating with the friction wheels (21);
the centrifuge is mounted on a roller (25).
3. The rope locking apparatus according to claim 2, wherein a mounting hole (211) is formed at the center of the friction wheel (21), and the mounting hole (211) is formed with a first stopper portion;
the roller (25) is provided with a second limiting part, and the first limiting part is matched with the second limiting part, so that the roller (25) rotates along with the friction wheel (21).
4. The cord lock apparatus of claim 2, further comprising:
the roller assemblies correspond to the friction wheels (21) one by one and are coaxially arranged with the friction wheels (21), and each roller assembly comprises a roller body and an end cover (28) which is arranged at the end part of the roller body and rotates along with the roller body; the roller body is sleeved outside the roller sleeve (25), and a first step surface is formed on the inner surface of the roller body;
the centrifugal piece is a centrifugal throw block (23), the centrifugal throw block (23) is installed between the roller sleeve (25) and the roller body (26), a first end of the centrifugal throw block (23) is hinged to the roller sleeve (25), and a second step surface is formed at a second end of the centrifugal throw block (23); the first step surface and the second step surface are in limit fit in the centrifugal state, and the first step surface and the second step surface are separated in the reset state; the second end of the centrifugal throw block (23) is connected with a tension spring (24), the tension spring (24) is in a stretching state in the centrifugal state, and the tension spring (24) is in a natural state in the reset state;
the main shaft (22) is mounted at both ends to the end cap (28) and adapted to rotate with the end cap (28).
5. The cord lock apparatus of claim 4, wherein said drum body is formed with a snap-fit projection (261) at an end thereof, and said end cap (28) is formed with a snap-fit groove (281) that mates with said snap-fit projection (261) such that said end cap (28) rotates with said drum body.
6. The cord lock apparatus of claim 4, further comprising:
a bearing (27), the bearing (27) including a bearing inner race, the drum body (26) being mounted to the bearing inner race.
7. A cord lock apparatus as recited in any one of claims 1 to 5, further comprising:
a protective case including a first case (40) and a second case (50);
a first pressure spring (70), wherein a first end of the first pressure spring is mounted on the inner wall of the first shell (40), and a second end of the first pressure spring abuts against the rope clamping device (30), so that the rope clamping device (30) and the friction wheel pair clamp the rope (100);
the friction wheel pair is mounted between the first housing (40) and the second housing (50).
8. A rope locking arrangement as claimed in claim 7, characterised in that between the first housing (40) and one of the friction wheels (21) and between the second housing (50) and the other friction wheel (21) there is mounted a second compression spring (60), the second compression spring (60) being compressed to press the rope (100) towards the friction wheel (21).
9. The rope locking device according to any one of claims 1 to 5, characterized in that the friction wheel (21) comprises a friction wheel piece and friction teeth (213) formed at an outer edge of the friction wheel piece, the thickness of the friction teeth (213) gradually increasing toward the center of the friction wheel piece.
10. A rope locking arrangement as claimed in any one of claims 1 to 5, characterised in that the locking member (11) comprises a mounting portion which is fitted around the main shaft (22) and a friction locking portion which connects the mounting portions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202021727465.4U CN212631493U (en) | 2020-08-18 | 2020-08-18 | Rope locking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202021727465.4U CN212631493U (en) | 2020-08-18 | 2020-08-18 | Rope locking device |
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CN212631493U true CN212631493U (en) | 2021-03-02 |
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Family Applications (1)
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CN202021727465.4U Active CN212631493U (en) | 2020-08-18 | 2020-08-18 | Rope locking device |
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CN (1) | CN212631493U (en) |
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