Traction sheave with protection structure

Abstract

The utility model is applicable to the technical field of traction sheave structures, and provides a traction sheave with a protection structure, which comprises a mounting frame, mounting plates are fixedly connected to the two sides of the bottom of the mounting frame, a plurality of mounting holes are formed in the surfaces of the two mounting plates, a driving shaft is rotatably arranged on the inner wall of the mounting frame, and the driving shaft is connected with the protection structure. A gear motor is fixedly connected to the side wall of the mounting frame, an output shaft of the gear motor is fixedly connected with a driving shaft, a traction wheel is fixedly connected to the periphery of the driving shaft, and a protection structure is arranged on one side of the traction wheel. By arranging the protection structure, the brake component can be automatically triggered through the trigger component when the rotating speed of the traction wheel is too high, so that the traction wheel is automatically braked, and the safety problem caused by the too high rotating speed of the traction wheel is avoided; therefore, there is no need to arrange a sensor and an external power supply for supplying power to the sensor, and the application range of the device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the traction wheel structure, especially a traction wheel with protection structure. BACKGROUND

[0002] The traction wheel is a rope wheel on the traction machine, also called traction rope wheel or driving rope wheel, is the device of elevator transmission traction power, utilizes the friction force of traction steel wire rope and the rope groove on the traction wheel rim to transmit power, is installed on the turbine shaft in the speed reducer, such as gearless traction machine, is installed on the side of the brake, and is on the same axis line with the motor shaft, brake shaft, in order to ensure the safe operation of elevator, must use safe and effective traction wheel, prevent the occurrence of safety accidents, guarantee the life safety of elevator internal personnel.

[0003] The patent with the announcement number CN212503547U discloses an elevator traction wheel device with a safety protection structure, relates to the technical field of elevator traction wheels, and comprises a support frame, one side of the support frame is fixedly connected with a rotating shaft speed measurement module, one side of the rotating shaft speed measurement module is provided with a first motor, one end of the first motor is fixedly connected with a first output shaft, one end of the first output shaft is fixedly connected with a first rotating shaft, the middle part of the first rotating shaft is fixedly connected with a roller, both ends of the first rotating shaft are fixedly connected with first bearings, and both sides of the first rotating shaft are provided with fixed sliding rods.

[0004] However, the above-mentioned patent has the following deficiencies:

[0005] The above-mentioned patent can emergency brake the traction wheel when the rotating speed of the traction wheel is too fast, so as to avoid the safety problems caused by the too fast rotating speed of the traction wheel, but the rotating speed of the traction wheel in the above-mentioned patent is detected by a sensor, the operation of the sensor needs to be powered by a power supply, and the circuit part in the above structure has a higher requirement on the external environment, so that the application range of the device is reduced. UTILITY MODEL CONTENTS

[0006] The utility model provides a traction wheel with protection structure, aims at solving the problem of the traction wheel with protection structure mentioned in the above background art.

[0007] The utility model is realized in this way, a traction wheel with protection structure, including installation frame, the both sides of installation frame bottom are fixedly connected with mounting panel, the surface of two mounting panels is equipped with a plurality of mounting holes, the inner wall of installation frame is rotatably provided with drive shaft, the side wall of installation frame is fixedly connected with speed reducer, the output shaft of speed reducer is fixedly connected with drive shaft, the outer week of drive shaft is fixedly connected with traction wheel, one side of traction wheel is equipped with protection structure;

[0008] The protection structure comprises a stopping component for stopping the traction wheel and a triggering component for triggering the stopping component when the rotation speed of the traction wheel is too large.

[0009] Preferably, the stopping component comprises a passive friction ring and a mounting piece, the passive friction ring is sleeved on the outer periphery of the drive shaft, the passive friction ring is fixedly connected with the drive shaft, one side of the passive friction ring is provided with a driving friction ring, the driving friction ring is sleeved on the outer periphery of the drive shaft, and the inner periphery of the driving friction ring is not in contact with the drive shaft.

[0010] The mounting piece is sleeved on the outer periphery of the drive shaft, the inner periphery of the mounting piece is not in contact with the drive shaft, a plurality of connecting rods are fixedly connected between the mounting piece and the mounting frame, a plurality of fixed rods are fixedly connected to the side wall of the mounting piece, and the plurality of fixed rods are distributed around the center of the mounting piece.

[0011] The end of the fixed rod is hingedly provided with a hinge piece, two first limiting grooves are formed in one end of the hinge piece, two second limiting grooves are formed in the other end of the hinge piece, a first limiting shaft is movably connected between the two first limiting grooves, a connecting block is fixedly connected to the middle of the first limiting shaft, a baffle is fixedly connected to the side wall of the connecting block, a moving rod is fixedly connected to the side wall of the baffle, the moving rod passes through the mounting plate, the moving rod is slidably connected to the mounting plate, an installation groove is formed in the end of the moving rod, a limiting rod is rotatably connected to the inner side of the installation groove, the width of the limiting rod is greater than the width of the moving rod, an extrusion spring is sleeved on the outer periphery of the moving rod, one end of the extrusion spring abuts against the mounting plate, the other end of the extrusion spring abuts against the baffle, a second limiting shaft is movably connected between the two second limiting grooves, a sliding rod is fixedly connected to the middle of the second limiting shaft, the sliding rod passes through the mounting plate, the sliding rod is slidably connected to the mounting plate, a limiting piece is fixedly connected to the end of the sliding rod, an active cylinder is sleeved on the outer periphery of the sliding rod, the active cylinder is slidably connected to the sliding rod, the end of the active cylinder is fixedly connected to the driving friction ring, a compression spring is arranged in the active cylinder, one end of the compression spring abuts against the inner wall of the active cylinder, and the other end of the compression spring abuts against the limiting piece.

[0012] In the initial state, the extrusion spring on the outer periphery of the moving rod extrudes the baffle, so that the moving rod has a tendency to move towards the hinge piece driven by the baffle, and at this time the end of the limiting rod rotatably connected with the moving rod abuts against the mounting plate, thereby limiting the movement of the moving rod.

[0013] When the end of the limiting rod is impacted, the impacted limiting rod rotates in the installation groove, at this time the end of the limiting rod no longer abuts against the installation plate, thereby no longer limiting the movement of the moving rod, at this time the compression spring extrudes the baffle and drives the moving rod to move towards the hinge, at the same time the baffle extrudes the first limiting groove through the connecting block and the first limiting shaft and slides and rotates in the first limiting groove, thereby driving the hinge to rotate with the end of the fixed rod as the hinge point, at the same time the second limiting groove at the other end of the hinge extrudes the second limiting shaft, at this time the second limiting shaft extrudes the limiting piece at the end of the sliding rod and compresses the compression spring, at the same time the compression spring drives the driving friction ring to abut against the passive friction ring through the movable cylinder, thereby stopping the passive friction ring through the friction force between the driving friction ring and the passive friction ring, thereby stopping the driving shaft connected with the passive friction ring and the traction wheel connected with the driving shaft.

[0014] Preferably, the trigger component comprises a sliding groove, the sliding groove is arranged in the passive friction ring, and a plurality of sliding grooves are arranged around the center of the passive friction ring.

[0015] A sliding block is arranged in the sliding groove, an extension rod is fixedly connected to the side wall of the sliding block, the extension rod is arranged through the passive friction ring at the middle part, the extension rod is in sliding connection with the passive friction ring, a counterweight is fixedly connected to the end of the extension rod, a supporting spring is arranged around the extension rod, one end of the supporting spring abuts against the sliding block, and the other end of the supporting spring abuts against the inner wall of the sliding groove.

[0016] The traction wheel can be driven to rotate by the reduction motor through the driving shaft, when the rotation speed of the traction wheel is normal, the rotation speed of the traction wheel is slow, at this time the centrifugal inertia of the counterweight connected with the traction wheel is small, thereby the sliding block cannot be driven to move by the extension rod to overcome the elastic force of the supporting spring, at this time the counterweight and the extension rod cannot contact the limiting rod.

[0017] When the rotation speed of the traction wheel is too fast, at this time the centrifugal inertia of the counterweight connected with the traction wheel is large, thereby the sliding block can be driven to move by the extension rod to overcome the elastic force of the supporting spring, at this time the counterweight and the extension rod move away from the traction wheel and contact the limiting rod, thereby triggering the stopping component.

[0018] Preferably, a plurality of annular friction grooves are arranged on the surface of the passive friction ring, and a plurality of annular friction protrusions are integrally arranged on the surface of the driving friction ring, and the plurality of annular friction protrusions are matched with the plurality of annular friction grooves, respectively.

[0019] By opening annular friction grooves on the surface of the passive friction ring and integrally arranging annular friction protrusions on the surface of the active friction ring, when the active friction ring and the passive friction ring abut, the annular friction protrusions will contact with the annular friction grooves, so that the contact area between the active friction ring and the passive friction ring can be increased, and the friction between the active friction ring and the passive friction ring can be increased.

[0020] Preferably, the hinged point of the fixed rod and the hinge member is close to the second limiting groove.

[0021] The hinged point of the fixed rod and the hinge member is close to the second limiting groove, so that the power wall of the hinge member is longer, the force output by the hinge member is larger, and the active friction ring can abut against the passive friction ring with larger force.

[0022] Compared with the prior art, the utility model discloses a traction sheave with a protection structure has the advantages of the following:

[0023] When the rotating speed of the traction sheave is too large, the protection structure can automatically trigger the brake stop component through the trigger component, so that the traction sheave is automatically braked and stopped, and the safety problem caused by the too fast rotating speed of the traction sheave is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the whole structure schematic diagram of the utility model;

[0025] Figure 2 It is the brake stop component structure schematic diagram of the utility model;

[0026] Figure 3 It is the brake stop component local structure schematic diagram of the utility model;

[0027] Figure 4 It is the trigger component structure schematic diagram of the utility model;

[0028] Figure 5 It is the A part structure enlarged view of the utility model Figure 3 ;

[0029] Figure 6 It is the B part structure enlarged view of the utility model Figure 4 .

[0030] In the drawing:

[0031] 1, mounting frame;11, mounting plate;12, mounting hole;13, driving shaft;14, traction sheave;15, speed reducer motor;

[0032] 2, protection structure;

[0033] 21, stop part; 211, passive friction ring; 212, mounting; 213, active friction ring; 214, connecting rod; 215, fixed rod; 216, hinged part; 217, first limiting groove; 218, second limiting groove; 219, first limiting shaft; 2110, connecting block; 2111, baffle; 2112, moving rod; 2113, mounting groove; 2114, limiting rod; 2115, extrusion spring; 2116, second limiting shaft; 2117, sliding rod; 2118, limiting part; 2119, movable cylinder; 2120, compression spring;

[0034] 22, trigger part; 221, sliding groove; 222, sliding block; 223, extension rod; 224, counterweight; 225, supporting spring;

[0035] 3, annular friction groove; 4, annular friction protrusion. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0037] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0038] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0039] 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 the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication。For ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning of the utility model according to specific circumstances.

[0041] Please refer to Figures 1-6 The utility model provides a technical scheme: a traction sheave with protection structure, including installation frame 1, installation frame 1 bottom both sides are fixedly connected with mounting plate 11, two mounting plate 11 surfaces are all set with a plurality of mounting holes 12, the inner wall rotationally arranged with drive shaft 13 in installation frame 1, installation frame 1 side wall is fixedly connected with speed reducer 15, and speed reducer 15 output shaft is fixedly connected with drive shaft 13, and drive shaft 13 periphery is fixedly connected with traction sheave 14, and traction sheave 14 one side is equipped with protection structure 2;

[0042] Protection structure 2 includes stop component 21 and trigger component 22, and stop component 21 is used to stop traction sheave 14, and trigger component 22 is used to trigger stop component 21 when the rotation speed of traction sheave 14 is too large.

[0043] Further, stop component 21 includes passive friction ring 211 and mounting piece 212, passive friction ring 211 is sleeved on the periphery of drive shaft 13, passive friction ring 211 is fixedly connected with drive shaft 13, passive friction ring 211 one side is equipped with driving friction ring 213, driving friction ring 213 is sleeved on the periphery of drive shaft 13, and the inner periphery of driving friction ring 213 does not contact drive shaft 13;

[0044] Mounting piece 212 is sleeved on the periphery of drive shaft 13, the inner periphery of mounting piece 212 does not contact drive shaft 13, a plurality of connecting rods 214 are fixedly connected between mounting piece 212 and installation frame 1, a plurality of fixed rods 215 are fixedly connected on the side wall of mounting piece 212, and a plurality of fixed rods 215 are all distributed around the center of mounting piece 212.

[0045] The end of the fixed rod 215 is hingedly provided with a hinge piece 216, one end of the hinge piece 216 is provided with two first limiting grooves 217, the other end of the hinge piece 216 is provided with two second limiting grooves 218, the two first limiting grooves 217 are movably connected with a first limiting shaft 219, the middle of the first limiting shaft 219 is fixedly connected with a connecting block 2110, the side wall of the connecting block 2110 is fixedly connected with a baffle 2111, the side wall of the baffle 2111 is fixedly connected with a moving rod 2112, the moving rod 2112 is arranged through the mounting plate 11, the moving rod 2112 is slidably connected with the mounting plate 11, the end of the moving rod 2112 is provided with a mounting groove 2113, the inside of the mounting groove 2113 is rotatably connected with a limiting rod 2114, the width of the limiting rod 2114 is greater than the width of the moving rod 2112, the moving rod 2112 is sleeved with an extrusion spring 2115, one end of the extrusion spring 2115 abuts against the mounting plate 11, the other end of the extrusion spring 2115 abuts against the baffle 2111, the two second limiting grooves 218 are movably connected with a second limiting shaft 2116, the middle of the second limiting shaft 2116 is fixedly connected with a sliding rod 2117, the middle of the sliding rod 2117 is arranged through the mounting plate 11, the sliding rod 2117 is slidably connected with the mounting plate 11, the end of the sliding rod 2117 is fixedly connected with a limiting piece 2118, the sliding rod 2117 is sleeved with a movable cylinder 2119, the movable cylinder 2119 is slidably connected with the sliding rod 2117, the end of the movable cylinder 2119 is fixedly connected with the driving friction ring 213, the inside of the movable cylinder 2119 is provided with a compression spring 2120, one end of the compression spring 2120 abuts against the inner wall of the movable cylinder 2119, the other end of the compression spring 2120 abuts against the limiting piece 2118.

[0046] Further, the trigger part 22 comprises a sliding groove 221, the sliding groove 221 is arranged in the inside of the passive friction ring 211, the number of the sliding grooves 221 is multiple, and the multiple sliding grooves 221 are distributed around the center of the passive friction ring 211;

[0047] The inside of the sliding groove 221 is slidably provided with a sliding block 222, the side wall of the sliding block 222 is fixedly connected with an extension rod 223, the middle of the extension rod 223 is arranged through the passive friction ring 211, the extension rod 223 is slidably connected with the passive friction ring 211, the end of the extension rod 223 is fixedly connected with a counterweight 224, the extension rod 223 is sleeved with a supporting spring 225, one end of the supporting spring 225 abuts against the sliding block 222, the other end of the supporting spring 225 abuts against the inner wall of the sliding groove 221.

[0048] Further, the surface of the passive friction ring 211 is provided with multiple annular friction grooves 3, the surface of the driving friction ring 213 is integrally provided with multiple annular friction protrusions 4, and the multiple annular friction protrusions 4 are matched with the multiple annular friction grooves 3 respectively.

[0049] Further, the hinge point of the fixed rod 215 and the hinge piece 216 is close to the second limiting groove 218.

[0050] The working principle and use process of the utility model:

[0051] In the initial state, the extrusion spring 2115 outside the periphery of the moving rod 2112 extrudes the baffle 2111, so that the moving rod 2112 is driven to move towards the hinge 216, and the end of the limiting rod 2114 rotatably connected with the moving rod 2112 abuts against the mounting plate 11, thereby limiting the moving rod 2112;

[0052] The traction sheave 14 is driven to rotate by the driving shaft 13 through the reduction motor 15, and when the rotation speed of the traction sheave 14 is normal, the rotation speed of the traction sheave 14 is slow, so that the centrifugal inertia of the counterweight 224 connected with the traction sheave 14 is small, thereby the sliding block 222 cannot overcome the elastic force of the supporting spring 225 and move through the extension rod 223, and the counterweight 224 and the extension rod 223 cannot contact the limiting rod 2114;

[0053] When the rotation speed of the traction sheave 14 is too fast, the centrifugal inertia of the counterweight 224 connected with the traction sheave 14 is large, thereby the sliding block 222 can overcome the elastic force of the supporting spring 225 and move through the extension rod 223, and the counterweight 224 and the extension rod 223 can move away from the traction sheave 14 and be driven to rotate and contact the limiting rod 2114 along with the rotation of the traction sheave 14;

[0054] When the end of the limiting rod 2114 is impacted, the limiting rod 2114 subjected to the impact rotates in the mounting groove 2113, and the end of the limiting rod 2114 no longer abuts against the mounting plate 11, thereby the moving rod 2112 is no longer limited, and the extrusion spring 2115 extrudes the baffle 2111 and drives the moving rod 2112 to move towards the hinge 216, and the baffle 2111 extrudes the first limiting groove 217 through the connecting block 2110 and the first limiting shaft 219 and slides and rotates in the first limiting groove 217, thereby driving the hinge 216 to rotate with the end of the fixed rod 215 as the hinge point, and the second limiting groove 218 at the other end of the hinge 216 extrudes the second limiting shaft 2116, and the second limiting shaft 2116 drives the limiting member 2118 at the end of the sliding rod 2117 to extrude the compression spring 2120, and the extrusion spring 2115 drives the driving friction ring 213 to abut against the driven friction ring 211 through the movable cylinder 2119, thereby stopping the driven friction ring 211 through the friction force between the driving friction ring 213 and the driven friction ring 211, thereby stopping the driving shaft 13 connected with the driven friction ring 211 and the traction sheave 14 connected with the driving shaft 13.

Claims

1. A traction sheave with a protective structure, comprising a mounting frame (1), characterized in that: Mounting plates (11) are fixedly connected to both sides of the bottom of the mounting frame (1). Multiple mounting holes (12) are opened on the surface of the two mounting plates (11). A drive shaft (13) is rotatably arranged on the inner wall of the mounting frame (1). A geared motor (15) is fixedly connected to the side wall of the mounting frame (1). The output shaft of the geared motor (15) is fixedly connected to the drive shaft (13). A traction wheel (14) is fixedly connected to the outer periphery of the drive shaft (13). A protective structure (2) is provided on one side of the traction wheel (14). The protective structure (2) includes a braking component (21) and a triggering component (22). The braking component (21) is used to brake the traction sheave (14), and the triggering component (22) is used to trigger the braking component (21) when the rotational speed of the traction sheave (14) is too high.

2. A traction sheave with a protective structure as described in claim 1, characterized in that: The braking component (21) includes a passive friction ring (211) and a mounting component (212). The passive friction ring (211) is sleeved on the outer periphery of the drive shaft (13) and is fixedly connected to the drive shaft (13). An active friction ring (213) is provided on one side of the passive friction ring (211). The active friction ring (213) is sleeved on the outer periphery of the drive shaft (13), and the inner periphery of the active friction ring (213) does not contact the drive shaft (13). The mounting component (212) is sleeved on the outer periphery of the drive shaft (13), and the inner periphery of the mounting component (212) does not contact the drive shaft (13). Multiple connecting rods (214) are fixedly connected between the mounting component (212) and the mounting frame (1). Multiple fixing rods (215) are fixedly connected to the side wall of the mounting component (212), and the multiple fixing rods (215) are distributed around the center of the mounting component (212). The fixed rod (215) is hinged at one end with a hinge member (216). One end of the hinge member (216) has two first limiting grooves (217), and the other end has two second limiting grooves (218). A first limiting shaft (219) is movably connected between the two first limiting grooves (217). A connecting block (2110) is fixedly connected to the middle of the first limiting shaft (219). A baffle (2111) is fixedly connected to the side wall of the connecting block (2110). 2111) A movable rod (2112) is fixedly connected to the side wall. The movable rod (2112) is installed through the mounting plate (11) in the middle. The movable rod (2112) is slidably connected to the mounting plate (11). An installation groove (2113) is opened at the end of the movable rod (2112). A limit rod (2114) is rotatably connected inside the installation groove (2113). The width of the limit rod (2114) is greater than the width of the movable rod (2112). A compression spring (211) is sleeved on the outer periphery of the movable rod (2112). 5) One end of the compression spring (2115) abuts against the mounting plate (11), and the other end of the compression spring (2115) abuts against the baffle (2111). A second limiting shaft (2116) is movably connected between the two second limiting grooves (218). A slide rod (2117) is fixedly connected to the middle of the second limiting shaft (2116). The middle of the slide rod (2117) passes through the mounting plate (11). The slide rod (2117) is slidably connected to the mounting plate (11). The end of the slide rod (2117) A fixed connection limiter (2118) is provided. A movable cylinder (2119) is sleeved on the outer periphery of the slide rod (2117). The movable cylinder (2119) is slidably connected to the slide rod (2117). The end of the movable cylinder (2119) is fixedly connected to the active friction ring (213). A compression spring (2120) is provided inside the movable cylinder (2119). One end of the compression spring (2120) abuts against the inner wall of the movable cylinder (2119), and the other end of the compression spring (2120) abuts against the limiter (2118).

3. A traction sheave with a protective structure as described in claim 2, characterized in that: The triggering component (22) includes a groove (221), which is formed inside the passive friction ring (211). The number of grooves (221) is set to multiple, and the multiple grooves (221) are distributed around the center of the passive friction ring (211). A slider (222) is slidably disposed inside the groove (221). An extension rod (223) is fixedly connected to the side wall of the slider (222). A passive friction ring (211) is disposed through the middle of the extension rod (223). The extension rod (223) is slidably connected to the passive friction ring (211). A counterweight (224) is fixedly connected to the end of the extension rod (223). A support spring (225) is sleeved on the outer periphery of the extension rod (223). One end of the support spring (225) abuts against the slider (222), and the other end of the support spring (225) abuts against the inner wall of the groove (221).

4. A traction sheave with a protective structure as described in claim 3, characterized in that: The passive friction ring (211) has multiple annular friction grooves (3) on its surface, and the active friction ring (213) has multiple annular friction protrusions (4) integrally formed on its surface, with the multiple annular friction protrusions (4) respectively matching the multiple annular friction grooves (3).

5. A traction sheave with a protective structure as described in claim 2, characterized in that: The hinge point between the fixed rod (215) and the hinge member (216) is close to the second limiting groove (218).

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