Elevator traction wheel brake lock hook

Abstract

The present invention relates to the field of elevator traction wheel brake devices, and in particular to an elevator traction wheel brake hook, comprising a base, the base comprising a rectangular bottom plate, and the top surfaces of the bottom plate are respectively and vertically fixedly connected with an adapter seat and a clamping seat, a baffle is fixedly connected between the clamping seat and the adapter seat, and a rotating shaft is horizontally inserted at the top of the adapter seat, the end of the rotating shaft is coaxially fixedly connected with a brake disc, and the brake disc is provided with a slot in an annular array; a buffer mechanism, comprising an annular buckle seat 1 and buckle seat 2, the rotating shaft is coaxially plugged with the buckle seat 1 and buckle seat 2. The device inserts an insert rod into the slot of the brake disc to brake in a manner of preventing the brake disc from rotating, has a stronger braking effect than friction, and can cooperate with the existing friction brake device of the elevator to achieve strong emergency braking of the elevator car.

Description

Technical Field

[0001] The invention relates to the field of elevator traction wheel brake devices, in particular to an elevator traction wheel brake lock hook. Background Art

[0002] The elevator car and counterweight are connected by steel cables, which are repeatedly wound around the traction wheel. The traction wheel rotates through the friction with the steel cables to drive the car up or down. In the traction mechanism of the elevator, in addition to the traction wheel, there are also a transmission box, a drive motor and an electromagnetically controlled brake device. The electromagnetically controlled brake is composed of a brake disc, brake pads, brake springs and an electromagnetic push rod. When the car stops, the electromagnetic push rod loses power, and the brake spring squeezes the brake pads against the brake disc to ensure the stability of the car. When the car is running, the electromagnetic push rod is energized, which expands the brake spring to make the brake pads leave the brake disc, allowing the car to move.

[0003] In addition to the electromagnetic brake control in the traction mechanism, there is a redundant emergency brake device between the car and the steel frame structure in the elevator shaft. However, it is not difficult to see that the current elevator braking is mainly achieved through friction. The establishment of friction requires pressure, and the elevator braking is generally passive safety. For example, the traction brake does not clamp the brake through electromagnetic force, but the spring compresses the brake after the electromagnetic force fails. This is to take into account the occurrence of power outages in elevator accidents. Therefore, under the action of the counterweight block on the weight balancing of the car, too strong traction braking force is not required in daily life. If a strong braking force is configured for emergency braking, it is necessary to compress the strong spring in daily life to store more elastic potential energy, and then a more powerful electromagnetic device is required to control it, resulting in an increase in energy consumption in daily use. Therefore, an emergency braking method that does not rely on friction is needed.

[0004] Through searching the existing equipment and technology, it is found that the patent with publication number CN102774776A provides a method of plugging a lock hook into the traction sheave, thereby preventing the traction sheave from rotating to achieve car braking. However, the patent does not mention how to solve the problem of the timing of inserting the lock hook into the traction sheave, nor does it mention how to solve the problem of impact damage after the lock hook is inserted into the rotating traction sheave. Therefore, it is believed that the patent only proposes a concept of achieving the purpose of car braking by plugging in the traction sheave to prevent rotation, and cannot truly achieve this purpose based on the technical content of the patent. Therefore, in order to solve the above technical problems, an elevator traction sheave brake lock hook is proposed. Summary of the invention

[0005] In view of the problem that the forced braking by plugging in the elevator traction wheel in the above or prior art has an excessive impact force that may easily cause damage to the equipment structure, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide an elevator traction sheave brake hook.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an elevator traction wheel brake lock hook, comprising a base, the base comprising a rectangular bottom plate, and the two sides of the top surface of the bottom plate are respectively vertically fixedly connected with an adapter seat and a clamping seat, a baffle is fixedly connected between the clamping seat and the adapter seat, and a rotating shaft is horizontally inserted into the top of the adapter seat, and a brake disc is coaxially fixedly connected to the end of the rotating shaft, and the brake disc is provided with slots in an annular array; a buffer mechanism, which comprises an annular buckle seat 1 and a buckle seat 2, the rotating shaft is coaxially inserted with the buckle seat 1 and the buckle seat 2, an I-shaped buffer block is arranged between the buckle seat 1 and the buckle seat 2, and the two ends of the buffer block are respectively buckled with the outer walls of the buckle seat 1 and the buckle seat 2, and the buffer block is located on the upper half of the circumferential wall of the buckle seat 1. The cam is evenly distributed, the rotating shaft is located between the buckle seat 1 and the buckle seat 2 and is rotatably connected with a short arm, the length of the short arm is greater than the maximum radius of the buckle seat 1 and the buckle seat 2, and the buckle seat 1 is fixedly connected to the adapter seat; the releasing mechanism includes a sleeve fixedly connected to the end of the short arm, and the sleeve is parallel to the rotating shaft, one end of the sleeve is fixedly threadedly connected with a plug, the other end of the sleeve is plugged with a plug, and a spring is arranged between the plug and the plug, the peripheral wall of the plug located at one end of the spring is provided with a groove, the outer wall of the sleeve is fused with a flange corresponding to the groove, and the flange is fixedly connected with an electromagnetic push rod, the push rod of the electromagnetic push rod is axially plugged into the flange, the inside of the flange is connected with the groove, and steel balls are filled between the push rod and the groove of the electromagnetic push rod.

[0008] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, the slot is arranged in an arc shape as a whole, and the arc contour axis of the slot is coaxial with the rotating shaft, and the insertion rod is plugged and matched with the slot of the brake disc.

[0009] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, a steel rod is inserted between the buckle seat 1 and the adapter seat, the steel rods are distributed in a ring array about the buckle seat 1, and a single steel rod is distributed between two adjacent buffer blocks, the buckle seat 1 is provided with a top screw along its radial direction to clamp the steel rod, and the adapter seat is provided with a screw on the side away from the buckle seat 1 to tighten the steel rod along the radial thread.

[0010] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, a slot is provided at the bottom of the second buckle seat parallel to the rotating shaft, and the second buckle seat is slidably connected to the top of the clamping seat only along the axial direction of the rotating shaft through the slot.

[0011] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, in the zero position state, the short arm and the baffle are respectively located on both sides of the buckle seat, and the baffle is located within the rotation radius of the short arm and the sleeve.

[0012] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, wherein: a ring is fixedly provided on the end of the buckle seat 2 away from the buckle seat 1, and the buckle seat 1, the buckle seat 2 and the ring are not in contact with the rotating shaft.

[0013] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, a clamping groove is provided on the peripheral wall of the end of the insertion rod, and a claw is provided in the elastic pre-pressure of the clamping groove, the claw is located at one end of the brake disc and is hinged to the insertion rod in the clamping groove, and the clamping groove and the claw are distributed in a ring array about the insertion rod.

[0014] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, when the claw is ejected, the coverage area of ​​the claw is larger than the slot width of the slot.

[0015] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, the buffer block is manufactured by oblique cutting of an I-shaped profile, and the buckle seat 1 and the buckle seat 2 are both matched with the buffer block to open an oblique groove.

[0016] As a preferred solution of the elevator traction wheel brake lock hook of the present invention, wherein: the side of the adapter away from the brake disc is hollowed out, and triangular plate reinforcements are arranged between the adapter and the bottom plate, and between the baffle and the bottom plate.

[0017] The beneficial effects of the elevator traction sheave brake hook of the present invention are as follows:

[0018] The device inserts a rod into the slot of the brake disc to prevent the brake disc from rotating, which has a stronger braking effect than friction and can cooperate with the existing friction brake device of the elevator to achieve strong emergency braking of the elevator car.

[0019] The rod of the device is released by a release mechanism. The release mechanism uses an electromagnetic push rod and a steel ball to engage the groove of the rod to prevent the rod from popping out and maintain the pre-compression state of the spring. The spring and the rod are released by pulling out the electromagnetic push rod and releasing the steel ball. The electromagnetic push rod only needs to overcome the sliding friction between the push rod and the steel ball, and does not need to directly resist the elastic force of the spring. Therefore, it is not only reliable to operate, but also makes the device miniaturized and low-power.

[0020] The buffer mechanism of the device can, when the brake disc transmits the impact force to the device through the plug rod, the short arm moves with the deflection of the plug rod to impact the buffer block of special shape. The buckle seat 1, the buffer block and the buckle seat 2 form an enclosing structure, so that the buffer block can fully absorb energy. Through the deformation and fracture of the buffer block, the device can stably and controllably perform strong braking on the elevator car in the form of plugging the brake disc with the plug rod;

[0021] The buffer mechanism of the device adopts the form of connection in which the second buckle seat is close to the adapter seat and a fixed steel rod is inserted in the middle, according to the directional characteristics of the impact force when the insertion rod is inserted into the brake disc. This structure can not only meet the strong support requirements of the buffer mechanism, but also meet the maintenance economy and convenience of the buffer mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the layout of the elevator traction wheel brake hook in the elevator traction equipment.

[0024] Figure 2 It is a schematic diagram of the overall structure of the elevator traction wheel brake hook.

[0025] Figure 3 This is a structural schematic diagram of the elevator traction wheel brake hook from another perspective.

[0026] Figure 4 For elevator traction sheave brake hook Figure 3 A is an enlarged view of the structure.

[0027] Figure 5 It is a structural schematic diagram of the buffer mechanism of the elevator traction wheel brake hook.

[0028] Figure 6 This is a structural exploded view of the buffer mechanism of the elevator traction wheel brake hook.

[0029] Figure 7 It is a partial structural sectional view of the buffer mechanism of the elevator traction wheel brake hook.

[0030] Figure 8 It is a schematic diagram of the base structure of the elevator traction wheel brake hook.

[0031] Fig. 9 This is a cross-sectional view of the assembly structure of the base and buffer mechanism of the elevator traction wheel brake lock hook.

[0032] Fig.10 The figure is a schematic diagram of the assembly structure of the buffer block and the buckle seat of the elevator traction wheel brake lock hook.

[0033] Fig.11 This is a schematic diagram of the processing of the buffer block of the elevator traction wheel brake hook.

[0034] In the figure: 100, base; 101, bottom plate; 102, adapter seat; 103, clamping seat; 104, baffle; 105, rotating shaft; 106, brake disc; 107, steel rod; 102a, hollow; 106a, slot; 200, buffer mechanism; 201, buckle seat 1; 202, buckle seat 2; 203, buffer block; 204, short arm; 201a, inclined groove; 202a, clamping groove; 202b, collar; 300, release mechanism; 301, sleeve; 302, plug; 303, plug rod; 304, spring; 305, flange; 306, electromagnetic push rod; 307, steel ball; 303a, groove; 303b, clamping groove; 303c, claw. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] Example 1, reference Figure 1 to Figure 11 , which is the first embodiment of the present invention, provides an elevator traction wheel brake hook, which can completely stop the traction wheel and the elevator car by clamping the brake disc 106, and includes a base 100, such as Figure 8 As shown, the base 100 includes a rectangular bottom plate 101, and a transfer seat 102 and a clamping seat 103 are respectively vertically fixedly connected to both sides of the top surface of the bottom plate 101, and a baffle 104 is fixedly connected between the clamping seat 103 and the transfer seat 102. Fig. 9 As shown, a rotating shaft 105 is horizontally inserted into the top of the adapter 102. Figure 3 As shown, the end of the rotating shaft 105 is coaxially fixedly connected with a brake disc 106, and the brake disc 106 is provided with slots 106a in an annular array, and the slots 106a are arranged in an arc shape as a whole, and the arc contour axis of the slots 106a is coaxial with the rotating shaft 105, and the insertion rod 303 is plugged and matched with the slots 106a of the brake disc 106;

[0037] like Figure 5 and Figure 6 As shown, the buffer mechanism 200 includes an annular buckle seat 1 201 and a buckle seat 202, the rotating shaft 105 is coaxially plugged with the buckle seat 1 201 and the buckle seat 202, an I-shaped buffer block 203 is arranged between the buckle seat 1 201 and the buckle seat 202, and the two ends of the buffer block 203 are respectively buckled with the outer walls of the buckle seat 1 201 and the buckle seat 202, the buffer blocks 203 are evenly distributed on the upper half of the buckle seat 1 201, the rotating shaft 105 is located between the buckle seat 1 201 and the buckle seat 202 and is rotatably connected with a short arm 204, the length of the short arm 204 is greater than the maximum radius of the buckle seat 1 201 and the buckle seat 202, and the buckle seat 1 201 is fixedly connected to the adapter seat 102;

[0038] like Figure 5 and Figure 7 As shown, the releasing mechanism 300 includes a sleeve 301 fixedly connected to the end of the short arm 204, and the sleeve 301 is parallel to the rotating shaft 105, one end of the sleeve 301 is fixedly threadedly connected with a plug 302, the other end of the sleeve 301 is plugged with a plug 303, and a spring 304 is arranged between the plug 303 and the plug 302, a groove 303a is provided on the peripheral wall of the plug 303 located at one end of the spring 304, a flange 305 is fused and arranged at the outer wall of the sleeve 301 corresponding to the groove 303a, and the flange 305 is fixedly connected with an electromagnetic push rod 306, the push rod of the electromagnetic push rod 306 is axially plugged into the flange 305, the interior of the flange 305 is connected with the groove 303a, and a steel ball 307 is filled between the push rod of the electromagnetic push rod 306 and the groove 303a.

[0039] like Fig. 9 As shown, a steel rod 107 is inserted between the buckle seat 1 201 and the adapter seat 102, and the steel rods 107 are distributed in a ring array about the buckle seat 1 201, and a single steel rod 107 is distributed between two adjacent buffer blocks 203. The buckle seat 1 201 is provided with a top screw along its radial direction to clamp the steel rod 107, and the adapter seat 102 is provided with a screw along the radial thread of the steel rod 107 to tighten it on the side away from the buckle seat 1 201.

[0040] Specifically, Figure 5 and Figure 8 As shown, the bottom of the second buckle seat 202 is parallel to the rotation shaft 105 and a slot 202a is provided. The second buckle seat 202 is slidably connected to the top of the card seat 103 only along the axial direction of the rotation shaft 105 through the slot 202a. Figure 2 and Figure 8 As shown, in the zero position, the short arm 204 and the baffle 104 are respectively located on both sides of the buckle seat 201, and the baffle 104 is located within the rotation radius of the short arm 204 and the sleeve 301, as shown in FIG. Figure 5 As shown, a collar 202b is fixedly provided at one end of the buckle seat 202 away from the buckle seat 1 201, and the buckle seat 1 201, the buckle seat 202 and the collar 202b are not in contact with the rotating shaft 105. Fig.11 and Fig.10 As shown, the buffer block 203 is made of an I-shaped profile by oblique cutting, and the buckle seat 1 201 and the buckle seat 2 202 are matched with the buffer block 203 to open an oblique groove 201a, as shown in FIG. Fig. 9 and Figure 8 As shown, a hollow 102 a is provided on one side of the adapter 102 away from the brake disc 106 , and triangular plates are provided between the adapter 102 and the bottom plate 101 , and between the baffle 104 and the bottom plate 101 for reinforcement.

[0041] The structural principle and advantages of the device are further explained in combination with the prior art: In the prior art, elevator car braking is achieved through friction. The greater the mass of the elevator car and the faster the movement speed, the higher the braking friction is required. Taking the traction wheel brake as an example, the friction during braking is provided by the brake spring squeezing the brake pad. The friction brake is affected by many factors such as the brake spring pressure, the friction coefficient of the friction surface, the friction material loss, and thermal attenuation. The brake system must take into account the low energy consumption and low loss requirements of daily use, and provide braking performance that is many times higher than that in daily use in an instant during emergency braking. For the friction brake device, the design will become complicated and difficult;

[0042] Therefore, the present invention provides a braking device for a traction wheel, which shares a brake disc 106 with the existing traction wheel electromagnetic spring brake system. Unlike the existing electromagnetic spring brake, which uses the brake spring to press the brake pad against the peripheral wall of the brake disc 106 for frictional deceleration after the electromagnet loses power, the present invention uses the insertion rod 303 to insert into the slot 106a of the brake disc 106 to brake in a blocking manner.

[0043] The present invention is mainly composed of a base 100, a buffer mechanism 200 and a release mechanism 300. Figure 2 and Figure 3 When the insertion rod 303 pops out of the sleeve 301 and is inserted into the slot 106a of the brake disc 106, the brake disc 106 will drive the short arm 204 to deflect relative to the base 100 through the insertion rod 303 and the sleeve 301, while the buffer block 203 is stationary relative to the base 100. Therefore, during the deflection of the short arm 204, the short arm 204 first impacts the buffer block 203, and the purpose of buffering is achieved through the deformation and fracture of the buffer block 203. If the buffer blocks 203 are all destroyed, the baffle 104 integrally cast on the base 100 will eventually block the short arm 204 and the sleeve 301, so that the brake disc 106 stops rotating;

[0044] The above-mentioned buffer block 203 should be made of relatively soft materials such as 7 series aluminum alloy and stainless steel (relative to nitriding heat-treated steel), and in the order of contact in the deflection direction of the short arm 204, the short arm 204 should first contact the buffer block 203 with the softest material, and then gradually touch the buffer block 203 with relatively hard material; the triggering of the device requires the existing elevator braking system to slow down first, and when the speed of the brake disc 106 is reduced to the decisive speed, the release mechanism 300 releases the rod 303, which has the same purpose as the buffer mechanism 200 in the device, which is to use the existing braking conditions of the elevator to further control the impact force within the range that the device can withstand.

[0045] To achieve the above purpose, the device also involves the following technical details:

[0046] First, if Fig.10 and Fig.11As shown, the buffer block 203 is in an I-shaped shape and is tilted as a whole. It is obliquely inserted and assembled with the buckle seat 1 201 and the buckle seat 2 202 through the oblique groove 201a. Fig.10 Taking the perspective as an example, when the short arm 204 deflects counterclockwise, the squeezing force of the short arm 204 on the buffer block 203 will generate a component force pointing to the bottom of the inclined groove 201a along the inclined groove 201a, which avoids the phenomenon that the buffer block 203 flies off when the short arm 204 impacts the buffer block 203, so that the buffer block 203 is stable and fully exerts its buffering effect;

[0047] The two outer corners at both ends of the I-shaped buffer block 203 have very little effect on the strength of the buffer block 203, so chamfering can save manufacturing material costs. Although the shape of a single buffer block 203 seems to be relatively complex, in fact, the buffer block 203 is obtained by cutting and grinding a whole section of I-shaped aluminum or steel profile. Thanks to batch processing, the manufacturing cost of the buffer block 203 is controllable;

[0048] Second, if Figure 5 and Fig. 9 As shown, the buffer block 203 will transfer a large amount of impact force to the buckle seat 1 201 and the buckle seat 2 202 when breaking and buffering. The buckle seat 1 201 and the buckle seat 2 202 are at risk of damage (for example, edge collapse). Therefore, for economic considerations of maintenance, the buckle seat 1 201 is connected to the base 100 through three high-strength steel rods 107. The buckle seat 1 201 can be disassembled for maintenance or replacement. When the buffer block 203 is impacted, since the end face of the buckle seat 1 201 is in close contact with the adapter seat 102, the steel rod 107 is subjected to the shear force applied by the buckle seat 1 201 and the adapter seat 102 along the radial direction thereof, rather than the bending force. Therefore, the possibility of deformation of the steel rod 107 during the impact can be ignored, and the support strength requirement of the buckle seat 1 201 can be fully met by connecting with a small number of steel rods 107.

[0049] The function of the second buckle seat 202 is mainly to assist the first buckle seat 201 and the buffer block 203 to form an enclosing structure to ensure that the buffer block 203 fully absorbs energy and prevents the buffer block 203 from slipping away from the side of the short arm 204 after bending and deforming. Therefore, the second buckle seat 202 is firstly connected with the clamping seat 103 through the clamping groove 202a at the bottom to prevent the second buckle seat 202 from rotating when the buffer block 203 is deformed by impact, so as to avoid the buffer block 203 failing to absorb energy in time and fully due to the rotation of the second buckle seat 202, and secondly, the second buckle seat The end of the second buckle 202 is extended with a collar 202b, which is processed integrally with the second buckle seat 202 by a lathe. Since the buffer blocks 203 work one by one and step by step (the strength of the buffer blocks 203 is gradually increased), the second buckle seat 202 is subjected to unilateral force, and unilateral force will pull the second buckle seat 202 to cause deflection, displacement and deformation. Therefore, the length of the second buckle seat 202 sleeved on the rotating shaft 105 is extended by the collar 202b to increase the stability of the second buckle seat 202 under unilateral force.

[0050] Third, in the prior art, the electromagnetic brake system of the traction wheel releases the control of the brake spring by the electromagnetic force after power is cut off, and the brake spring squeezes the brake pad to provide braking force. Therefore, when braking is not needed, power needs to be provided to maintain the electromagnetic device to compress the brake spring, and a powerful electromagnetic device is required to directly control the brake spring;

[0051] It should be noted that the electromagnetic push rod 306 used in the present invention should be a type with a reset spring, so that the electric push rod can be pushed out and reset when the power is off.

[0052] like Figure 7 As shown, in the release mechanism 300 of the present invention, although the electromagnetic control spring 304 is in a compressed state, and the insertion rod 303 is pushed out by releasing the electromagnetic control spring 304, there are the following differences from the prior art. First, the thrust generated by the electromagnetic push rod 306 of the device is not directly used to counteract the elastic force of the spring 304. Figure 7 In the embodiment, the spring 304 applies thrust to the axial direction of the plug rod 303, and the groove 303a on the plug rod 303 transmits the thrust to the steel ball 307, and the steel ball 307 is clamped between the plug rod 303 and the side wall of the sleeve 301, preventing the plug rod 303 from being pushed out by the spring 304. When the plug rod 303 needs to be released, the electromagnetic push rod 306 loses power, and the push rod withdraws, so that the steel ball 307 is squeezed out of the groove 303a by the arc surface of the groove 303a, and the push rod is withdrawn;

[0053] In the above working process, the extrusion force of the steel ball 307 on the electromagnetic push rod 306 is in the radial direction of the push rod, and the peripheral side of the push rod is supported by the shell of the flange 305, so the push rod will not be pushed away by the extrusion force and cause failure. In addition, when the electromagnetic push rod 306 is pulled out of the extrusion of the steel ball 307, sliding friction occurs, and the friction coefficient between steel metals with high hardness and high surface finish is low. Therefore, the reset force required for the electromagnetic push rod 306 to pull out the push rod from the extrusion of the steel ball 307 is much smaller than the electromagnetic force required when the electromagnetic push rod 306 directly compresses the spring 304. Although the release mechanism 300 is similar to the conventional elevator traction wheel electromagnetic brake, it actually works in a completely different way. In terms of the support structure, the connection (welding) combination of the short arm 204, the sleeve 301 and the flange 305 is the basis for the simple and stable operation of the device.

[0054] The pre-compression force of the spring 304 can be achieved by adding or removing gaskets between the plug 302 and the sleeve 301 .

[0055] In summary, the device effectively achieves the effect of completely stopping the traction sheave and the elevator car by engaging the brake disc 106 .

[0056] Example 2, reference Figure 3 and Figure 4 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an insertion rod 303 and a claw 303c of an elevator traction wheel brake lock hook, which include: a clamping groove 303b is opened on the peripheral wall at the end of the insertion rod 303, and a claw 303c is elastically pre-loaded in the clamping groove 303b, the claw 303c is located at one end of the brake disc 106 and is hinged to the insertion rod 303 in the clamping groove 303b, and the clamping groove 303b and the claw 303c are distributed in a ring array with respect to the insertion rod 303, and when the claw 303c pops open, the coverage range of the claw 303c is larger than the slot width of the slot 106a.

[0057] This embodiment provides a reinforcement scheme for the insertion rod 303, that is, a claw 303c is provided on the peripheral wall of the insertion end of the insertion rod 303, and when the insertion rod 303 passes through the slot 106a of the brake disc 106, the claw 303c is squeezed and retracted into the clamping groove 303b, and when the claw passes through the slot 106a, it pops up again, which can prevent the insertion rod 303 from detaching from the brake disc 106 due to accidental retreat, thereby increasing the reliability of the braking device.

[0058] The rest of the structure is the same as that of Example 1.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An elevator traction sheave brake hook, characterized in that: include, A base (100), the base (100) comprising a rectangular bottom plate (101), and a transfer seat (102) and a clamping seat (103) are respectively and vertically fixedly connected on both sides of the top surface of the bottom plate (101), a baffle (104) is fixedly connected between the clamping seat (103) and the transfer seat (102), and a rotating shaft (105) is horizontally inserted at the top of the transfer seat (102), and a brake disc (106) is coaxially fixedly connected to the end of the rotating shaft (105), and the brake disc (106) is provided with slots (106a) in a ring array; The buffer mechanism (200) comprises an annular buckle seat 1 (201) and a buckle seat 2 (202); the rotating shaft (105) is coaxially plugged with the buckle seat 1 (201) and the buckle seat 2 (202); an I-shaped buffer block (203) is arranged between the buckle seat 1 (201) and the buckle seat 2 (202); and the two ends of the buffer block (203) are respectively buckled with the outer walls of the buckle seat 1 (201) and the buckle seat 2 (202); the buffer blocks (203) are evenly distributed on the upper half of the circumferential wall of the buckle seat 1 (201); and the rotating shaft (105) is provided with a plurality of buffer blocks (203) disposed between the buckle seat 1 (201) and the buckle seat 2 (202). A short arm (204) is rotatably connected between the first buckle seat (201) and the second buckle seat (202), the length of the short arm (204) being greater than the maximum radius of the first buckle seat (201) and the second buckle seat (202), the first buckle seat (201) being fixedly connected to the adapter seat (102), the bottom of the second buckle seat (202) being parallel to the rotation axis (105) and having a slot (202a), and the second buckle seat (202) being slidably connected to the top of the adapter seat (103) only along the axial direction of the rotation axis (105) through the slot (202a); The release mechanism (300) comprises a sleeve (301) fixedly connected to the end of the short arm (204), the sleeve (301) being parallel to the rotating shaft (105), one end of the sleeve (301) being fixedly threadedly connected to a plug (302), the other end of the sleeve (301) being plugged with an insertion rod (303), a spring (304) being arranged between the insertion rod (303) and the plug (302), the insertion rod (303) being located at one end of the spring (304) A groove (303a) is provided on the peripheral wall, a flange (305) is fused and provided on the outer wall of the sleeve (301) corresponding to the groove (303a), and an electromagnetic push rod (306) is fixedly connected to the flange (305), a push rod of the electromagnetic push rod (306) is inserted axially along the flange (305), the interior of the flange (305) is communicated with the groove (303a), and a steel ball (307) is filled between the push rod of the electromagnetic push rod (306) and the groove (303a).

2. The elevator traction sheave brake hook according to claim 1, characterized in that: The slot (106a) is arranged in an arc shape as a whole, and the arc contour axis of the slot (106a) is coaxial with the rotating shaft (105), and the insertion rod (303) is plugged and matched with the slot (106a) of the brake disc (106).

3. The elevator traction sheave brake hook according to claim 2, characterized in that: A steel rod (107) is inserted between the buckle seat 1 (201) and the adapter seat (102), and the steel rods (107) are distributed in a ring array with respect to the buckle seat 1 (201), and a single steel rod (107) is distributed between two adjacent buffer blocks (203). The buckle seat 1 (201) is provided with a top screw along its radial direction to press the steel rod (107), and the adapter seat (102) is provided with a screw along the radial thread of the steel rod (107) for fastening on the side away from the buckle seat 1 (201).

4. The elevator traction sheave brake hook according to claim 3, characterized in that: In the zero position state, the short arm (204) and the baffle (104) are respectively located on two sides of the buckle seat (201), and the baffle (104) is located within the rotation radius of the short arm (204) and the sleeve (301).

5. The elevator traction sheave brake hook according to claim 4, characterized in that: A collar (202b) is fixedly provided at one end of the second buckle seat (202) away from the first buckle seat (201), and the first buckle seat (201), the second buckle seat (202) and the collar (202b) are not in contact with the rotating shaft (105).

6. The elevator traction sheave brake hook according to claim 1, characterized in that: A clamping groove (303b) is provided on the peripheral wall of the end of the insertion rod (303), and a claw (303c) is elastically pre-compressed in the clamping groove (303b), the claw (303c) is located at one end of the brake disc (106) and is hinged to the insertion rod (303) in the clamping groove (303b), and the clamping groove (303b) and the claw (303c) are distributed in a ring array with respect to the insertion rod (303).

7. The elevator traction sheave brake hook according to claim 6, characterized in that: When the claw (303c) pops open, the coverage area of ​​the claw (303c) is greater than the width of the slot (106a).

8. The elevator traction sheave brake hook according to claim 1, characterized in that: The buffer block (203) is manufactured by obliquely cutting an I-shaped profile, and the first buckle seat (201) and the second buckle seat (202) are both matched with the buffer block (203) and are provided with an oblique groove (201a).

9. The elevator traction sheave brake hook according to claim 1, characterized in that: A hollow portion (102a) is provided on a side of the adapter seat (102) away from the brake disc (106), and triangular plates are provided between the adapter seat (102) and the bottom plate (101) and between the baffle plate (104) and the bottom plate (101) for reinforcement.

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