CN220502358U - Speed limiter and elevator - Google Patents

Abstract

The utility model provides a speed limiter and an elevator. The rope wheel is rotatably arranged on the installation body; the centrifugal hammer is rotatably arranged on one side of the rope pulley; the pawl is arranged on the centrifugal hammer; the spring assembly is arranged on the rope pulley and is connected with the centrifugal hammer; the braking device comprises a ratchet wheel and a braking component, wherein the ratchet wheel and the braking component are rotatably arranged on the installation body, the ratchet wheel is positioned on one side of the pawl and is in transmission connection with the braking component, so that the pawl can drive the braking component to move towards one side close to the rope pulley through the ratchet wheel so as to be in press fit with a steel wire rope on the rope pulley. This application is through setting up centrifugal hammer and pawl correspondence in one side of rope sheave, avoids centrifugal hammer and pawl to stretch into the rope sheave inner wall in order to lead to the size of rope sheave to be partial big, and centrifugal hammer and pawl's simple structure, the size is little for compact structure between rope sheave and centrifugal hammer and the pawl reduces the volume of overspeed governor.

Description

Speed limiter and elevator

Technical Field

The utility model relates to the field of elevators, in particular to a speed limiter and an elevator.

Background

The elevator speed limiter is an important safety component of an elevator, and when the elevator overspeed the elevator car for whatever reason in operation, under the condition that other safety protection devices do not work, the speed limiter and the safety gear perform linkage action to stop the elevator car. However, current speed limiters are large in size, occupy a large section of hoistway space when disposed in an elevator, and limit the reduction of hoistway space.

Disclosure of Invention

In view of this, it is necessary to provide a speed limiter and an elevator, which solve the problem that the current speed limiter has a large size.

The technical scheme is as follows:

in one aspect, there is provided a speed limiter comprising:

a mounting body;

the rope pulley is rotatably arranged on the installation body;

the centrifugal hammer is rotatably arranged on one side of the rope wheel;

a pawl mounted on the centrifugal hammer;

the spring assembly is arranged on the rope pulley and is connected with the centrifugal hammer; and

The braking device comprises a ratchet wheel and a braking component, wherein the ratchet wheel and the braking component are rotatably arranged on the installation body, the ratchet wheel is positioned on one side of the pawl and is in transmission connection with the braking component, so that the pawl can drive the braking component to move towards one side close to the rope pulley through the ratchet wheel so as to be in press fit with a steel wire rope on the rope pulley. The technical scheme is further described as follows:

in one embodiment, the centrifugal hammer comprises a counterweight end and a connecting end, the thickness of the counterweight end is larger than that of the connecting end along the axial direction of the rope pulley, one side of the connecting end away from the rope pulley is located between the rope pulley and one side of the counterweight end away from the rope pulley, and the pawl is mounted on one side of the connecting end away from the rope pulley.

In one embodiment, the number of the centrifugal hammers is two, the two centrifugal hammers are arranged along the circumferential direction of the rope sheave, the speed limiter further comprises a connecting rod, and two ends of the connecting rod are in one-to-one corresponding rotary connection with the two connecting ends.

In one embodiment, the sheave is further provided with a support balance for balancing the weight of the centrifugal hammer, the pawl, the spring assembly and the connecting rod.

In one embodiment, the pawl is provided with a sharp corner for engagement with the ratchet wheel.

In one embodiment, the speed limiter further comprises a torsion spring, the torsion spring is located between the centrifugal hammer and the pawl, two ends of the torsion spring are respectively connected with the centrifugal hammer and the pawl in one-to-one correspondence, the spring assembly comprises a speed regulating spring, a spring rod and a transmission shaft, one side, far away from the centrifugal hammer, of the rope wheel is provided with a mounting part, one end of the spring rod is movably matched with the mounting part along the axial direction of the spring rod, the speed regulating spring is sleeved on the outer side wall of the spring rod, the centrifugal hammer is provided with a transmission hole, the other end of the spring rod is connected with one end of the transmission shaft, the transmission shaft penetrates through the transmission hole, and the other end of the transmission shaft is in contact fit with the pawl so as to drive the pawl to be meshed with the ratchet.

In one embodiment, the brake assembly comprises a brake seat, a pull rod, a brake spring and a brake shoe; the brake seat with the installation body rotates to be connected, the brake seat is equipped with the through-hole, the one end of pull rod with the ratchet rotates to be connected, the pull rod wears to locate the through-hole, the other end of pull rod is equipped with conflict portion, the brake spring cover is located the lateral wall of pull rod, and be located conflict portion with between the brake seat, the brake shoe install in on the brake seat, and be used for with wire rope crimping cooperation on the rope sheave.

In one embodiment, the braking seat comprises an upper seat body, a lower seat body, a pin shaft and a fixed shaft, wherein the upper seat body is fixedly connected with the lower seat body and inclines towards one side close to the rope pulley, the through holes are formed in the upper seat body, flanging is arranged on two opposite sides of the lower seat body, a first mounting hole and a second mounting hole are formed in the flanging at intervals, the fixed shaft correspondingly penetrates through the two first mounting holes and is rotationally connected with the mounting body, the pin shaft correspondingly is inserted into the two second mounting holes, the lower seat body is provided with a mounting groove, and the braking shoe penetrates through the mounting groove and is fixedly connected with the pin shaft.

In one embodiment, the brake device further comprises an adjusting assembly mounted on the fixed shaft, the adjusting assembly being used for adjusting the inclination angle of the brake shoe relative to the lower seat body.

In another aspect, an elevator is provided comprising the governor.

According to the speed limiter and the elevator in the embodiments, when the speed limiter is in a normal running state, the rope pulley rotates at a rated speed, the initial pressing force provided by the spring assembly is larger than the centrifugal force of the centrifugal hammer, the centrifugal hammer is not opened, the pawl and the ratchet wheel are arranged at intervals and rotate along with the rope pulley, and the speed limiter does not act. When the speed limiter is in an overspeed running state, the centrifugal force of the centrifugal hammer is larger than the initial pressing force provided by the spring assembly, the centrifugal hammer is opened, the centrifugal hammer drives the pawl to move along the direction close to the ratchet wheel, when the pawl is meshed with the ratchet wheel, the force of rotation of the rope wheel is transmitted to the ratchet wheel through the centrifugal hammer and the pawl to drive the ratchet wheel to rotate, and then the ratchet wheel drives the brake assembly to rotate and press downwards, so that the brake assembly is pressed onto the steel wire rope to pull the safety clamp to stop the elevator, and the speed limiting effect is achieved. Compared with the current speed limiter, the speed limiter has the advantages that the centrifugal hammer and the pawl are correspondingly arranged on one side of the rope pulley, the centrifugal hammer and the pawl are prevented from extending into the inner wall of the rope pulley to cause the deviation of the rope pulley, the centrifugal hammer and the pawl are simple in structure and small in size, the structure between the rope pulley, the centrifugal hammer and the pawl is compact, the size of the speed limiter is further reduced, the section space of a shaft channel occupied by the speed limiter when the speed limiter is arranged in an elevator is reduced, the speed limiter is simple in structure and reliable in performance, and strong market competitiveness is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a normal speed operation of the speed limiter according to one embodiment.

Fig. 2 is a schematic diagram of the structure of the overspeed governor of fig. 1 in abnormal overspeed operation.

Fig. 3 is an exploded view of the governor of fig. 1.

Fig. 4 is an exploded view of the sheave, centrifugal hammer, pawl, connecting rod and spring assembly of fig. 1.

Fig. 5 is a schematic view of the pawl of fig. 4.

Fig. 6 is an exploded view of the spring assembly of fig. 4.

Fig. 7 is a schematic view of the brake device in fig. 1.

Fig. 8 is a schematic structural view of the brake pad of fig. 7.

Fig. 9 is a schematic structural view of the mounting body of fig. 1.

Reference numerals illustrate:

10. a speed limiter; 100. a mounting body; 110. a first positioning sleeve; 120. a main shaft; 130. a second positioning sleeve; 140. a base; 150. a fixing plate; 210. a rope pulley; 211. a support balancing part; 212. a mounting part; 220. a centrifugal hammer; 221. a counterweight end; 222. a connection end; 223. a transmission hole; 230. a pawl; 231. sharp corner; 240. a spring assembly; 241. a speed regulating spring; 242. a spring rod; 243. a transmission shaft; 244. a first adjustment nut; 245. a gasket; 250. a connecting rod; 260. a torsion spring; 300. a braking device; 310. a ratchet wheel; 320. a brake assembly; 321. a brake seat; 3211. a through hole; 3212. an upper base; 3213. a lower base; 3214. a pin shaft; 3215. a fixed shaft; 3216. flanging; 3217. a mounting groove; 322. a pull rod; 3221. a collision part; 323. a brake spring; 324. a brake shoe; 330. an adjustment assembly; 331. an adjusting bolt; 332. a second adjustment nut; 400. setting device.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

As shown in fig. 1, 2 and 3, in one embodiment, a speed limiter 10 is provided that includes a mounting body 100, a sheave 210, a centrifugal hammer 220, a pawl 230, a spring assembly 240 and a braking device 300. Wherein, the rope sheave 210 is rotatably installed on the installation body 100; the centrifugal hammer 220 is rotatably installed at one side of the sheave 210; pawl 230 is mounted to centrifugal hammer 220; the spring assembly 240 is mounted to the sheave 210 and is connected to the centrifugal hammer 220; the braking device 300 comprises a ratchet 310 and a braking component 320, wherein the ratchet 310 and the braking component 320 are rotatably arranged on the installation body 100, the ratchet 310 is positioned on one side of the pawl 230 and is in transmission connection with the braking component 320, so that the pawl 230 can drive the braking component 320 to move towards one side close to the rope pulley 210 through the ratchet 310 so as to be in press fit with a steel wire rope on the rope pulley 210.

In the speed limiter 10 of the above embodiment, when the speed limiter 10 is in the normal operation state, the sheave 210 rotates at the rated speed, the initial pressing force provided by the spring assembly 240 is greater than the centrifugal force of the centrifugal weight 220, the centrifugal weight 220 is not opened, so that the pawl 230 is spaced from the ratchet 310 and rotates together with the sheave 210, and the speed limiter 10 does not act. When the speed limiter 10 is in an overspeed running state, the centrifugal force of the centrifugal hammer 220 is larger than the initial pressing force provided by the spring assembly 240, the centrifugal hammer 220 is opened, so that the centrifugal hammer 220 drives the pawl 230 to move along the direction close to the ratchet wheel 310, when the pawl 230 is meshed with the ratchet wheel 310 (as shown in fig. 2), the rotating force of the rope pulley 210 is transmitted to the ratchet wheel 310 through the centrifugal hammer 220 and the pawl 230, so that the ratchet wheel 310 drives the brake assembly 320 to rotate and press downwards, and the brake assembly 320 is pressed onto a steel wire rope to pull the safety clamp to stop the elevator, so that the speed limiting effect is realized. Compared with the prior braking device 300, the centrifugal hammer 220 and the pawl 230 are correspondingly arranged on one side of the rope pulley 210, the centrifugal hammer 220 and the pawl 230 are prevented from extending into the inner wall of the rope pulley 210 to cause the size of the rope pulley 210 to be larger, the centrifugal hammer 220 and the pawl 230 are simple in structure and small in size, the structure between the rope pulley 210 and the centrifugal hammer 220 and the pawl 230 is compact, the size of the speed limiter 10 is further reduced, the section space of a shaft occupied by the speed limiter 10 when the speed limiter 10 is arranged in an elevator is reduced, and the elevator is simple in structure, reliable in performance and high in market competitiveness.

As shown in fig. 3 and 4, the centrifugal hammer 220 further includes a weight end 221 and a connecting end 222, the weight end 221 has a thickness greater than that of the connecting end 222 along the axial direction of the sheave 210, a side of the connecting end 222 away from the sheave 210 is located between the sheave 210 and a side of the weight end 221 away from the sheave 210, and the pawl 230 is mounted on a side of the connecting end 222 away from the sheave 210. In this manner, the height of pawl 230 protruding out of centrifugal hammer 220 is reduced, so that the volume of governor 10 is further reduced.

In this embodiment, the centrifugal hammer 220 has a crescent plate-like structure as a whole. The side of the connecting end 222 near the sheave 210 is on the same plane as the side of the counterweight end 221 near the sheave 210. Thus, the weight of the weight end 221 is significantly greater than the weight of the connecting end 222, and the stability of the operation of the centrifugal hammer 220 is improved.

As shown in fig. 3 and 4, alternatively, two centrifugal weights 220 are provided, the two centrifugal weights 220 are disposed along the circumferential direction of the sheave 210, the speed limiter 10 further includes a connecting rod 250, and two ends of the connecting rod 250 are rotatably connected to the two connecting ends 222 in a one-to-one correspondence. In this way, the two centrifugal hammers 220 are connected through the connecting rod 250 in a transmission manner, so that the two centrifugal hammers 220 can be opened or not opened at the same time, the centrifugal hammers 220 can be guaranteed to drive the pawl 230 to be meshed with the ratchet 310, and the reliability of the speed limiter 10 is improved. In addition, the connecting rod 250 can be embedded at the connecting end 222 of the centrifugal hammer 220, so that the volume of the speed limiter 10 is further reduced. Specifically, in the present embodiment, two centrifugal hammers 220 are disposed at intervals in the circumferential direction of the sheave 210, and the weight end 221 of the centrifugal hammer 220 is disposed in correspondence with the connecting end 222 of the other centrifugal hammer 220. The volume of the speed limiter 10 in the present application may be 25% smaller than the volume of current speed limiters.

As shown in fig. 3 and 4, the sheave 210 is optionally further provided with a supporting balance 211, and the supporting balance 211 is used to balance the weight of the centrifugal weight 220, the pawl 230, the spring assembly 240, and the link 250. The sheave 210, the centrifugal hammer 220, the pawl 230, the spring assembly 240, and the link 250 can be assembled to form an assembled wheel body. Thus, the supporting balance part 211 can balance the weight of the assembled wheel body, so that the gravity center of the assembled wheel body just falls on the wheel center, and the running stability and the service life of the speed limiter 10 are improved.

Specifically, in the present embodiment, the supporting balance portion 211 is provided as a wide wheel supporting portion, and the sheave 210 is further provided with at least one narrow wheel supporting portion, the wide wheel supporting portion and each of the narrow wheel supporting portions being provided along the circumferential direction of the sheave 210. In other embodiments, sheave 210 is also provided with an inner race boss that serves to limit the inward tightening position of centrifugal hammer 220.

As shown in fig. 4 and 5, in one embodiment, the pawl 230 is provided with a pointed portion 231, the pointed portion 231 being adapted to engage with the ratchet wheel 310. Therefore, the special engagement sharp angle design is adopted between the pawl 230 and the ratchet 310, so that the probability of tooth jump when the pawl 230 is engaged with the ratchet 310 can be effectively reduced, and the action precision of the speed limiter 10 is improved.

Specifically, in this embodiment, the pawl 230 includes a head, a pawl body, and a pointed portion 231, where the head is used to rotationally connect with the connection end 222, the head and the pointed portion 231 are respectively disposed on two opposite outer sidewalls of the pawl body, and two other outer sidewalls of the pawl body are respectively provided with a side straight surface and a side arc surface.

As shown in fig. 4 and 6, optionally, the speed limiter 10 further includes a torsion spring 260, the torsion spring 260 is located between the centrifugal hammer 220 and the pawl 230, two ends of the torsion spring 260 are respectively connected with the centrifugal hammer 220 and the pawl 230 in a one-to-one correspondence manner, the spring assembly 240 includes a speed adjusting spring 241, a spring rod 242 and a transmission shaft 243, one side of the sheave 210 away from the centrifugal hammer 220 is provided with a mounting portion 212, one end of the spring rod 242 is movably matched with the mounting portion 212 along the axial direction of the spring rod 242, the speed adjusting spring 241 is sleeved on the outer side wall of the spring rod 242, the centrifugal hammer 220 is provided with a transmission hole 223, the other end of the spring rod 242 is connected with one end of the transmission shaft 243, the transmission shaft 243 is arranged in the transmission hole 223 in a penetrating manner, and the other end of the transmission shaft 243 is in contact matching with the pawl 230 so as to drive the pawl 230 to be meshed with the ratchet 310. Thus, when the speed limiter 10 is in the normal operation state, the sheave 210 rotates at a rated speed, the initial pressing force provided by the speed regulating spring 241 is larger than the centrifugal force of the centrifugal hammer 220, the centrifugal hammer 220 is not opened, the pawl 230 is in contact with the transmission shaft 243 under the action of the torsion spring 260, and the speed limiter 10 does not act as the sheave 210 rotates together. When the speed limiter 10 is in an overspeed running state, the centrifugal force of the centrifugal hammer 220 is larger than the initial pressing force provided by the speed regulating spring 241, the centrifugal hammer 220 is opened, the transmission shaft 243 on the centrifugal hammer 220 presses down the pawl 230, so that the pawl 230 is closer to the ratchet wheel 310, when the pawl 230 is in contact with the ratchet wheel 310, the force of rotation of the rope wheel 210 is transmitted to the ratchet wheel 310 through the pawl 230, the ratchet wheel 310 is driven to rotate, the ratchet wheel 310 drives the brake component 320 to rotate and press down, and the brake component is pressed onto the steel wire rope, so that the safety clamp elevator is pulled.

In particular embodiments, the spring assembly 240 further includes a first adjustment nut 244 and a washer 245, the first adjustment nut 244 is mounted on the spring rod 242, the first adjustment nut 244 is located between the speed spring 241 and the drive shaft 243, the first adjustment nut 244 is used to adjust the initial compression force of the speed spring 241, and the washer 245 is mounted on the drive shaft 243 to limit the position of the drive shaft 243 relative to the centrifugal hammer 220.

As shown in fig. 3, 7 and 8, in one embodiment, brake assembly 320 includes a brake shoe 321, a pull rod 322, a brake spring 323 and a brake shoe 324; the brake base 321 is rotatably connected with the mounting body 100, the brake base 321 is provided with a through hole 3211, one end of the pull rod 322 is rotatably connected with the ratchet wheel 310, the pull rod 322 penetrates through the through hole 3211, the other end of the pull rod 322 is provided with an abutting portion 3221, the brake spring 323 is sleeved on the outer side wall of the pull rod 322 and located between the abutting portion 3221 and the brake base 321, and the brake shoe 324 is mounted on the brake base 321 and is used for being in pressure welding fit with a steel wire rope on the rope sheave 210. Thus, when the speed limiter 10 is in an overspeed running state, the centrifugal force of the centrifugal hammer 220 is larger than the initial pressing force provided by the speed regulating spring 241, the centrifugal hammer 220 is opened, the transmission shaft 243 on the centrifugal hammer 220 presses down the pawl 230, so that the pawl 230 is closer to the ratchet wheel 310, when the pawl 230 is in contact with the ratchet wheel 310, the rotating force of the rope pulley 210 is transmitted to the ratchet wheel 310 through the centrifugal hammer 220 and the pawl 230 to drive the ratchet wheel 310 to rotate, the ratchet wheel 310 drives the brake seat 321 to rotate and press down through the pull rod 322 and the brake spring 323, and the brake shoe 324 is pressed down to be in press fit with the steel wire rope on the rope pulley 210, so that the safety clamp is pulled to stop the elevator.

As shown in fig. 7 and 8, further, the brake base 321 includes an upper base body 3212, a lower base body 3213, a pin shaft 3214 and a fixed shaft 3215, the upper base body 3212 is fixedly connected with the lower base body 3213 and inclines towards one side close to the rope pulley 210, a through hole 3211 is formed in the upper base body 3212, flanges 3216 are arranged on two opposite sides of the lower base body 3213, a first mounting hole and a second mounting hole are formed in the flanges 3216 at intervals, the fixed shaft 3215 correspondingly penetrates through the two first mounting holes and is rotatably connected with the mounting body 100, the pin shaft 3214 correspondingly is inserted into the two second mounting holes, a mounting groove 3217 is formed in the lower base body 3213, and the brake shoe 324 penetrates through the mounting groove 3217 and is fixedly connected with the pin shaft 3214. Therefore, the brake seat 321 has a regular structure, can be formed by directly bending and processing a plate, and is simple to process and manufacture.

Specifically, in this embodiment, the abutting portion 3221 is set as an abutting seat, the upper seat body 3212 is provided with a spring mounting seat, and the brake spring 323 is mounted between the spring mounting seat and the abutting seat.

As shown in fig. 7 and 8, optionally, brake apparatus 300 further includes an adjustment assembly 330, wherein adjustment assembly 330 is mounted on fixed shaft 3215, and adjustment assembly 330 is used to adjust the inclination angle of brake shoe 324 with respect to lower housing 3213. In this manner, adjustment assembly 330 is able to adjust the angle of inclination of brake shoe 324 relative to brake shoe 321 such that brake shoe 324 is able to make surface contact with the wire rope, ensuring that brake shoe 324 is able to press onto the wire rope to pull the safety clamp to stop the elevator, improving the reliability of governor 10.

In this embodiment, the adjusting assembly 330 includes an adjusting bolt 331 and a second adjusting nut 332, the second adjusting nut 332 is mounted on a fixed shaft 3215, and the adjusting bolt 331 is screwed with the second adjusting nut 332 and connected with the brake shoe 324. Thus, when it is necessary to adjust the inclination angle of brake shoe 324 with respect to brake shoe 321, the corresponding adjustment can be performed by adjusting the extension length of adjustment bolt 331. In particular, in the present embodiment, the adjusting bolt 331 is in contact with the brake shoe 324 to be able to adjust the inclination angle of the brake shoe 324 with respect to the brake shoe 321.

As shown in fig. 3 and 9, in one embodiment, the installation body 100 includes a first positioning sleeve 110, a main shaft 120, a second positioning sleeve 130, a base 140 and a fixing plate 150, the main shaft 120 is horizontally installed on the base 140, the fixing plate 150 is connected with both the main shaft 120 and the base 140 to limit the position of the main shaft 120 relative to the base 140, and the first positioning sleeve 110 and the second positioning sleeve 130 are respectively sleeved on the outer side wall of the main shaft 120 to limit the relative positions among the sheave 210, the ratchet 310 and the main shaft 120. In this way, the spindle 120 may be positioned by adopting a through rod and matching with the first positioning sleeve 110 and the second positioning sleeve 130, so that the spindle 120 has a simple structure, is easy to process, and is reliable in positioning.

Specifically, in this embodiment, two first positioning sleeves 110 are arranged at intervals, two second positioning sleeves 130 are arranged between the two first positioning sleeves 110, two sides of the sheave 210 are respectively in one-to-one corresponding and interference fit with one of the second positioning sleeves 130 and the two first positioning sleeves 110, and two sides of the ratchet 310 are respectively in one-to-one corresponding and interference fit with the other of the second positioning sleeves 130 and the two first positioning sleeves 110.

In one embodiment, an elevator is provided that includes the governor 10 of any of the embodiments described above.

In the elevator of the above embodiment, when the speed governor 10 is in a normal operation state, the sheave 210 rotates at a rated speed, the initial pressing force provided by the spring assembly 240 is greater than the centrifugal force of the centrifugal weight 220, and the centrifugal weight 220 is not opened, so that the pawls 230 are spaced apart from the ratchet 310 and rotate together with the sheave 210, and the speed governor 10 does not act. When the speed limiter 10 is in an overspeed running state, the centrifugal force of the centrifugal hammer 220 is larger than the initial pressing force provided by the spring assembly 240, the centrifugal hammer 220 is opened, so that the centrifugal hammer 220 drives the pawl 230 to move along the direction close to the ratchet wheel 310, when the pawl 230 is meshed with the ratchet wheel 310, the rotating force of the rope wheel 210 is transmitted to the ratchet wheel 310 through the centrifugal hammer 220 and the pawl 230 so as to drive the ratchet wheel 310 to rotate, and then the ratchet wheel 310 drives the brake assembly 320 to rotate and press downwards, so that the brake assembly 320 is pressed onto a steel wire rope to pull the safety clamp to stop the elevator. Compared with the current speed limiter, the speed limiter has the advantages that the centrifugal hammer 220 and the pawl 230 are correspondingly arranged on one side of the rope pulley 210, the centrifugal hammer 220 and the pawl 230 are prevented from extending into the inner wall of the rope pulley 210 to cause the size of the rope pulley 210 to be larger, the centrifugal hammer 220 and the pawl 230 are simple in structure and small in size, the structure between the rope pulley 210 and the centrifugal hammer 220 and the pawl 230 is compact, the size of the speed limiter 10 is further reduced, the section space of a shaft occupied by the speed limiter 10 when the speed limiter is arranged in an elevator is reduced, the structure is simple, the performance is reliable, and the market competitiveness of the elevator is improved.

Wherein the elevator can be a passenger elevator, a goods elevator, an automobile elevator, an escalator or a moving walk, etc.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

It will be further understood that when interpreting the connection or positional relationship of elements, although not explicitly described, the connection and positional relationship are to be interpreted as including the range of errors that should be within an acceptable range of deviations from the particular values as determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, and is not limited herein.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A speed limiter, comprising:

a mounting body;

the rope pulley is rotatably arranged on the installation body;

the centrifugal hammer is rotatably arranged on one side of the rope wheel;

a pawl mounted on the centrifugal hammer;

the spring assembly is arranged on the rope pulley and is connected with the centrifugal hammer; and

The braking device comprises a ratchet wheel and a braking component, wherein the ratchet wheel and the braking component are rotatably arranged on the installation body, the ratchet wheel is positioned on one side of the pawl and is in transmission connection with the braking component, so that the pawl can drive the braking component to move towards one side close to the rope pulley through the ratchet wheel so as to be in press fit with a steel wire rope on the rope pulley.

2. The speed limiter according to claim 1, wherein the centrifugal hammer includes a weight end and a connecting end, a thickness of the weight end is greater than a thickness of the connecting end in an axial direction of the sheave, a side of the connecting end away from the sheave is located between the sheave and a side of the weight end away from the sheave, and the pawl is mounted to a side of the connecting end away from the sheave.

3. The speed limiter according to claim 2, wherein the centrifugal hammers are arranged in two in a circumferential direction of the sheave, the speed limiter further comprises a connecting rod, and both ends of the connecting rod are rotatably connected with both the connecting ends in one-to-one correspondence.

4. A governor according to claim 3, wherein the sheave is further provided with a support balance for balancing the weight of the centrifugal weight, the pawl, the spring assembly and the connecting rod.

5. A speed limiter according to claim 1, wherein the pawl is provided with a sharp corner for engagement with the ratchet wheel.

6. The speed limiter according to any one of claims 1 to 5, further comprising a torsion spring, wherein the torsion spring is located between the centrifugal hammer and the pawl, two ends of the torsion spring are respectively connected with the centrifugal hammer and the pawl in a one-to-one correspondence manner, the spring assembly comprises a speed regulating spring, a spring rod and a transmission shaft, one side of the rope pulley, which is far away from the centrifugal hammer, is provided with a mounting part, one end of the spring rod is movably matched with the mounting part along the axial direction of the spring rod, the speed regulating spring is sleeved on the outer side wall of the spring rod, the centrifugal hammer is provided with a transmission hole, the other end of the spring rod is connected with one end of the transmission shaft, the transmission shaft penetrates through the transmission hole, and the other end of the transmission shaft is in contact fit with the pawl so as to drive the pawl to be meshed with the ratchet.

7. The speed limiter according to any one of claims 1 to 5 wherein the brake assembly comprises a brake shoe, a pull rod, a brake spring and a brake shoe; the brake seat with the installation body rotates to be connected, the brake seat is equipped with the through-hole, the one end of pull rod with the ratchet rotates to be connected, the pull rod wears to locate the through-hole, the other end of pull rod is equipped with conflict portion, the brake spring cover is located the lateral wall of pull rod, and be located conflict portion with between the brake seat, the brake shoe install in on the brake seat, and be used for with wire rope crimping cooperation on the rope sheave.

8. The speed limiter according to claim 7, wherein the brake base comprises an upper base body, a lower base body, a pin shaft and a fixed shaft, the upper base body is fixedly connected with the lower base body and inclines towards one side close to the rope pulley, the through holes are formed in the upper base body, flanging is arranged on two opposite sides of the lower base body, a first mounting hole and a second mounting hole are formed in the flanging at intervals, the fixed shaft correspondingly penetrates through the two first mounting holes and is rotationally connected with the mounting body, the pin shaft correspondingly is inserted into the two second mounting holes, the lower base body is provided with a mounting groove, and the brake shoe penetrates through the mounting groove and is fixedly connected with the pin shaft.

9. The speed limiter according to claim 8, wherein the brake device further comprises an adjustment assembly mounted to the stationary shaft, the adjustment assembly for adjusting the angle of inclination of the brake shoe relative to the lower housing.

10. Elevator, characterized by comprising a speed limiter according to any one of claims 1 to 9.