CN218320116U - Safety tongs lifting device and elevator - Google Patents

Abstract

The utility model discloses a safety gear lifting device and an elevator, wherein the safety gear lifting device comprises a linkage component and a trigger guide plate, the linkage component is fixed at the bottom of a car and is used for connecting a brake block; the trigger guide plate is fixed on a guide rail of the elevator and comprises a first guide part which is arranged in a protruding mode; when the elevator is in unexpected fault and goes down, the linkage assembly is abutted to the first guide portion, the linkage assembly moves upwards relative to the car, and the brake block is lifted to clamp the guide rail to realize emergency braking. When the elevator has an accident fault and leads to the descending of the car, the linkage assembly is abutted against the first guide portion and moves along the first guide portion, the linkage assembly moves upwards relative to the car, and then the linkage assembly drives the brake block to move upwards, so that the brake block clamps the guide rail to realize braking. But this application wide application in elevator safety device technical field.

Description

Safety tongs lifting device and elevator

Technical Field

The utility model relates to an elevator technical field, in particular to safety tongs draw gear and elevator.

Background

In modern life, the application of the elevator is more and more extensive, and an emergency braking device for ensuring the operation safety of the elevator is also very important. The existing elevator emergency braking device is generally provided with a set of speed limiters on the top of a machine room or a well, a speed limiter tension wheel is arranged at the bottom of a pit or the well, a steel wire rope is tensioned to provide positive pressure of the steel wire rope and a speed limiter wheel so as to ensure friction force, the steel wire rope is connected with the speed limiter wheel and penetrates through the whole well, and the steel wire rope is started and terminated on a lifting rod of a safety clamp to form a closed loop. When the elevator runs downwards at an overspeed due to an accidental fault or other reasons of the elevator, the speed of the elevator exceeds the set speed of the speed limiter, the trigger switch enables the speed limiter wheel to brake, the lifting rod of the safety tongs is lifted through the friction force between the steel wire rope and the speed limiter wheel, the safety tongs of the car is triggered to brake, the car is braked, and a set of protection safety system for linkage of the speed limiter and the car safety tongs is formed.

The existing emergency braking device has corresponding action time, and once the steel wire rope falls off, breaks, slips and the like, or the tension force of the steel wire rope is insufficient due to the conditions of inclined tension wheel, falling of heavy objects and the like, the lifting rod of the safety gear lifted by the speed limiter fails, and the elevator cannot be braked and stopped by the safety gear, so that safety accidents occur.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the utility model provides a safety gear lifting device and elevator adopts technical scheme as follows.

The safety tongs lifting device provided by the utility model comprises a linkage component and a trigger guide plate, wherein the linkage component is connected with the car and comprises a connecting plate, and the connecting plate comprises a first end for connecting a brake block and a second end for connecting the trigger guide plate; the trigger guide plate is fixed on a guide rail of the elevator and comprises a first guide part which is arranged in a protruding mode; when an accidental elevator fault goes down, the linkage assembly is abutted to the first guide portion and moves upwards relative to the car, and the brake block clamping guide rail is pulled to achieve emergency braking.

The utility model discloses an in some embodiments, trigger the baffle and include second guide portion, go upward when the elevator, the linkage subassembly with second guide portion butt, the car for linkage subassembly rebound, the linkage subassembly drives the brake block and resets.

In some embodiments of the present invention, the trigger guide includes a stopper portion, and the stopper portion is connected to an end of the first guide portion.

The utility model discloses an in some embodiments, the linkage subassembly includes the moving part, the moving part with connecting plate swing joint, the moving part with trigger the baffle butt.

In some embodiments of the present invention, the linkage assembly includes a fixing base, the fixing base with the second end fixed connection of connecting plate, the moving part with fixing base swing joint.

The utility model discloses an in some embodiments, the spacing groove has been seted up to the fixing base, the moving part includes spacing axle, spacing axle is in the spacing groove is in order to slide in order to restrict the activity direction of moving part.

In some embodiments of the present invention, the linkage assembly includes an elastic member, the elastic member includes being close to the first end of the moving part and being close to the second end of the connecting plate, the elastic member is used for driving the moving part resets.

In some embodiments of the present invention, the linkage assembly includes a cover plate, the cover plate is fixedly connected to the movable member, and the cover plate covers the first end of the elastic member.

The utility model discloses an in some embodiments, the moving part includes the guide pulley, the guide pulley is followed trigger the baffle and roll in order to carry and draw the brake block.

The utility model also provides an elevator, which comprises a lift car, the safety gear lifting device and the guide rail, wherein the safety gear lifting device is connected with the bottom of the lift car; the guide rail is used for connecting a building wall, and the safety gear lifting device is connected with the guide rail.

The embodiment of the utility model has the following beneficial effect at least: when the elevator accident happens and leads to the car to descend, the linkage assembly abuts against the first guide portion, the linkage assembly moves along the first guide portion, the linkage assembly moves upwards relative to the car, and then the linkage assembly drives the brake block to move upwards, so that the brake block clamps the guide rail to achieve braking. But this application wide application in elevator safety device technical field.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic view of a safety gear lifting device;

fig. 2 is a schematic view of the structure of an elevator equipped with a safety gear lifting device;

fig. 3 is a schematic view of the connection of the safety gear to the linkage assembly in the elevator provided in fig. 2;

FIG. 4 is a schematic diagram of the operation of the safety gear pulling apparatus provided in FIG. 1;

FIG. 5 is a schematic view of a linkage assembly of the safety gear lifting device of FIG. 4;

fig. 6 is a schematic view of the connection between the safety gear and the linkage assembly. .

Reference numerals: 100. a linkage assembly; 110. a connecting plate; 111. a roller; 112. a tension spring; 120. a movable member; 121. a guide wheel; 122. a fixed shaft; 123. a limiting shaft; 130. a fixed seat; 131. a limiting groove; 140. an elastic member; 150. a cover plate; 151. fixing grooves; 160. a connecting rod; 200. triggering the guide plate; 210. a first guide portion; 220. a second guide portion; 230. a stopper portion; 300. a car; 310. safety tongs; 311. a brake block; 400. a guide rail.

Detailed Description

Embodiments of the invention, examples of which are illustrated in the accompanying drawings, are described in detail below with reference to fig. 1 to 6, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings, it is only for convenience of description and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. The features defined as "first" and "second" are used to distinguish feature names rather than having a special meaning, and further, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In modern life, the application of the elevator is more and more extensive, and an emergency braking device for ensuring the operation safety of the elevator is also very important. The conventional emergency braking device for the elevator is generally provided with a set of speed limiters on the top of a machine room or a well, a speed limiter tensioning wheel is arranged at the bottom of a pit or the well, a steel wire rope is tensioned to provide positive pressure between the steel wire rope and a speed limiter wheel so as to ensure friction force, the steel wire rope is connected with the speed limiter wheel through the steel wire rope and penetrates through the whole well, and the starting end and the terminal end of the steel wire rope are connected with a lifting rod of a safety clamp to form a closed loop. When the elevator runs downwards at an overspeed due to an accidental fault or other reasons of the elevator, the speed of the elevator exceeds the set speed of the speed limiter, the trigger switch stops the speed limiter wheel, and the lifting rod of the safety tongs is lifted through the friction force between the steel wire rope and the speed limiter wheel, so that the safety tongs of the car is triggered to brake and stop the car, and a set of protection safety system for linkage of the speed limiter and the car safety tongs is formed.

When the existing emergency braking device is used, corresponding action time exists, once the steel wire rope falls off, breaks, slips and the like, or the tension wheel inclines, a heavy object falls off and the like, the tension force of the steel wire rope is insufficient, the lifting rod of the safety gear is pulled by the speed limiter, the elevator cannot be braked and stopped by the safety gear, and therefore safety accidents occur.

The utility model relates to an elevator, which comprises a car 300, a safety gear lifting device and a guide rail 400, wherein the safety gear lifting device is connected with the bottom of the car 300; the guide rail 400 is used for connecting a building wall, and the safety gear lifting device is connected with the guide rail 400. It can be understood that the elevator shaft pit is provided with a car 300 buffer, and when the elevator is at the lowest flat floor, a braking buffer distance is reserved between the car 300 and the shaft pit. The safety gear lifting device can be used alone to realize emergency braking when the elevator car 300 is in failure and can also be used in combination with a traditional speed limiter safety gear 310 device. When the safety gear lifting device and the speed limiter safety gear 310 device are used in a combined mode, the braking distance of emergency braking of the car 300 is shortened, the elevator is guaranteed to decelerate successfully at the tail end of a stroke, and accidents of damage to the buffer and injury to people in the car 300 are avoided.

Other constructions and operations of the elevator are well known to those skilled in the art and will not be described in detail herein, and the structure of the safety gear pulling apparatus will be described below.

The utility model relates to a safety gear lifting device, which comprises a linkage component 100 and a trigger guide plate 200, wherein the linkage component 100 is connected with a car 300, and the linkage component 100 is used for connecting a brake block 311; the trigger guide 200 is fixed on a guide rail 400 of the elevator, and the trigger guide 200 comprises a first guide part 210 which is arranged in a protruding way; when the elevator goes down due to an unexpected fault, the linkage assembly 100 abuts against the first guide part 210, the linkage assembly 100 moves upwards relative to the car 300, and the brake block 311 is lifted to clamp the guide rail 400, so that emergency braking is realized. When the elevator has an unexpected fault and the car 300 descends, the linkage assembly 100 abuts against the first guide portion 210, the linkage assembly 100 moves along the first guide portion 210, the linkage assembly 100 moves upwards relative to the car 300, and then the linkage assembly 100 drives the brake block 311 to move upwards, so that the brake block 311 clamps the guide rail 400 to realize braking. But this application wide application in elevator safety device technical field.

Further, the linkage assembly 100 includes a connecting plate 110, and the connecting plate 110 includes a first end for connecting the brake pad 311 and a second end for connecting the trigger guide 200. Specifically, the connecting plate 110 and the brake block 311 are fixedly connected by welding to ensure the connection reliability, so that the connecting plate 110 can timely drive the brake block 311 to clamp the guide rail 400 to realize braking when the linkage assembly 100 moves along the trigger guide plate 200. It is understood that the connection plate 110 and the safety gear 310 may be integrally connected to each other to achieve synchronous movement.

Further, the linkage assembly 100 includes a movable member 120, the movable member 120 is movably connected to the connecting plate 110, and the movable member 120 abuts against the trigger guide 200. As can be understood from the accompanying drawings, the first guide portion 210 of the trigger guide 200 is disposed obliquely, and in order to improve the fluency of the movement process of the linkage assembly 100 along the first guide portion 210, one end of the movable member 120 abuts against the first guide portion 210, and the other end is movably connected to the connecting plate 110, so as to cooperatively realize the relative movement between the linkage assembly 100 and the trigger guide 200.

In some embodiments, moveable member 120 includes guide roller 121, and guide roller 121 rolls along trigger bar 200 to pull brake pad 311. With reference to the drawings, the guide wheel 121 is disposed to change sliding friction between the movable element 120 and the trigger guide 200 into rolling friction, so that relative movement between the linkage assembly 100 and the trigger guide 200 is smoother. It is understood that in other embodiments, a guide groove may be formed in the first guide portion 210 to cooperate with the guide wheel 121 to further define the moving direction of the linkage assembly 100.

Further, the linkage assembly 100 includes a fixing base 130, the fixing base 130 is fixedly connected to the second end of the connecting plate 110, and the movable member 120 is movably connected to the fixing base 130. Referring to the drawings, the fixed base 130 is fixed to the second end of the connecting plate 110, and the movable member 120 is nested in the fixed base 130. When the linkage assembly 100 moves along the trigger guide 200, the movable member 120 moves in the axial direction of the fixed base 130.

Referring to the drawings, the fixing base 130 is provided with a limiting groove 131, the moving part 120 includes a limiting shaft 123, and the limiting shaft 123 slides in the limiting groove 131 to limit the moving direction of the moving part 120. It can be understood that the limit groove 131 and the limit shaft 123 are matched to prevent the movable element 120 from rotating circumferentially in the fixed seat 130, so as to ensure the stability of the relative movement of the linkage assembly 100 along the trigger guide plate 200 and ensure that the linkage assembly 100 drives the brake block 311 to move to realize emergency braking of the elevator.

Further, the linkage assembly 100 includes an elastic member 140, the elastic member 140 includes a first end near the movable member 120 and a second end near the connecting plate 110, and the elastic member 140 is used for driving the movable member 120 to return. Referring to the drawings, in the embodiment, the elastic element 140 is a spring sleeved on the fixed base 130, and the spring is disposed between the movable element 120 and the connecting plate 110.

Further, the linkage assembly 100 includes a cover plate 150, the cover plate 150 is fixedly connected to the movable element 120, and in conjunction with the drawing, the movable element 120 is provided with a fixing shaft 122, the cover plate 150 is correspondingly provided with a fixing groove 151 matched with the fixing shaft 122, and the fixing shaft 122 is matched with the fixing groove 151 to prevent the cover plate 150 from rotating circumferentially. Specifically, the cover plate 150 is disposed to cover the first end of the elastic member 140. When the linkage assembly 100 moves along the trigger guide plate 200, the movable member 120 compresses the spring through the cover plate 150, and the spring generates an elastic force in a direction close to the movable member 120 to ensure an abutting state of the movable member 120 and the trigger guide plate 200, so as to ensure that the linkage assembly 100 moves relative to the car 300 and drives the brake block 311 to clamp the guide rail 400 to realize braking.

Further, the trigger guide plate 200 includes a second guide portion 220, when the elevator moves upwards, the linkage assembly 100 abuts against the second guide portion 220, the car 300 moves upwards relative to the linkage assembly 100, and the linkage assembly 100 drives the brake block 311 to return. As can be understood from the attached drawings, when the car 300 needs to be reset, the car 300 goes upwards for maintenance, the linkage assembly 100 moves along the second guide portion 220, the linkage assembly 100 moves downwards relative to the car 300, and the connecting plate 110 drives the brake block 311 to move downwards, so that the reset of the brake block 311 is realized.

Further, the safety gear lifting device comprises a tension spring 112, one end of the tension spring 112 is connected with the linkage assembly 100, and the other end is connected with the safety gear 310. As can be understood by referring to the drawings, the tension spring 112 is disposed between the linkage assembly 100 and the safety gear 310, and during normal operation of the elevator, the tension spring 112 can prevent malfunction of the linkage assembly 100, so as to prevent the linkage assembly 100 from driving the brake block 311 to realize braking in a non-emergency situation.

Further, linkage assembly 100 includes a roller 111, and roller 111 is coupled to a second end of connection plate 110. With reference to the drawings, the roller 111 abuts against the safety gear 310, and when the linkage assembly 100 passes through the trigger guide plate 200, the connecting plate 110 moves upward relative to the safety gear 310 to drive the brake block 311 to move relative to the safety gear 310 for braking. It will be appreciated that the provision of the roller 111 rolling connection between the connection plate 110 and the safety gear 310 may provide smoother relative movement between the linkage assembly 100 and the car 300.

Further, the trigger guide 200 includes a stopper 230, and the stopper 230 is connected to the end of the first guide 210. With reference to the drawings, the stopping portion 230 extends toward the direction close to the linkage assembly 100, when the car 300 goes down due to a fault, the linkage assembly 100 moves along the first guiding portion 210, and moves to the stopping portion 230 to move along the horizontal direction, at this time, the car 300 drives the safety gear 310 to continuously go down, the linkage assembly 100 drives the brake block 311 to move upward, and the linkage assembly 100 further drives the brake block 311 to clamp the guide rail 400 to realize braking.

Referring to fig. 6, in other embodiments, the safety gear lifting device includes a connecting rod 160, the connecting rod 160 is rotatably connected to the safety gear 310, when the car 300 goes down due to a fault, the linkage assembly 100 moves along the trigger guide plate 200, the connecting rod 160 rotates along the safety gear 310 via the first guide portion 210 and the stopping portion 230, and the connecting plate 110 drives the brake block 311 to move upward to clamp the guide rail 400 to achieve braking of the elevator.

The utility model is suitable for an emergency braking when multiple elevator trouble. Can understand, when the unexpected trouble takes place for the elevator, overspeed governor safety tongs system became invalid and leads to the car to continue down, linkage subassembly and first guide portion butt, and the motion of linkage subassembly along first guide portion, linkage subassembly move up for the car, and then the linkage subassembly drives the brake block rebound, makes the brake block carry the guide rail and realizes the braking, effectively stops the car at the pit through the safety tongs braking of car, carries out safety protection at the pit.

When the high-speed elevator has an unexpected fault and the elevator cannot monitor the condition that the elevator decelerates to the rated speed at the tail end of the stroke of the elevator, the elevator can effectively decelerate at a pit of a well through the braking of a safety gear of the car, so that safety accidents caused by the braking failure of a buffer of the elevator are avoided, and elevator equipment and personnel in the car are effectively protected.

In the description of the present specification, reference to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

In the description of the present invention, if the patent names "and" appear ", they are shown in the relationship of" and "rather than" or ". For example, the patent names "a and B" illustrate that the claimed invention is: the technical scheme with the subject name of A and the technical scheme with the subject name of B.

Claims (10)

1. A safety gear lifting device, comprising:

the linkage assembly (100), the linkage assembly (100) is connected with the car (300), the linkage assembly (100) comprises a connecting plate (110), and the connecting plate (110) comprises a first end used for connecting a brake block (311) and a second end used for connecting a trigger guide plate (200);

the elevator triggering guide plate comprises a triggering guide plate (200), wherein the triggering guide plate (200) is fixed on a guide rail (400) of an elevator, and the triggering guide plate (200) comprises a first guide part (210) which is arranged in a protruding mode;

when the elevator is in unexpected failure and goes down, the linkage assembly (100) is abutted to the first guide part (210), the linkage assembly (100) moves upwards relative to the car (300), and the lifting brake block (311) clamps the guide rail (400) to realize emergency braking.

2. The safety gear pulling apparatus according to claim 1, wherein: the trigger guide plate (200) comprises a second guide part (220), when the elevator ascends, the linkage assembly (100) is abutted to the second guide part (220), the car (300) moves upwards relative to the linkage assembly (100), and the linkage assembly (100) drives the brake block (311) to reset.

3. A safety gear pulling apparatus according to claim 2, wherein: the trigger guide (200) includes a stopper (230), and the stopper (230) is connected to a distal end of the first guide (210).

4. A safety gear pulling apparatus according to claim 1, wherein: the linkage assembly (100) comprises a movable piece (120), the movable piece (120) is movably connected with the connecting plate (110), and the movable piece (120) is abutted to the trigger guide plate (200).

5. The safety gear pulling apparatus according to claim 4, wherein: the linkage assembly (100) comprises a fixed seat (130), the fixed seat (130) is fixedly connected with the second end of the connecting plate (110), and the movable piece (120) is movably connected with the fixed seat (130).

6. The safety gear pulling apparatus according to claim 5, wherein: the fixing seat (130) is provided with a limiting groove (131), the moving part (120) comprises a limiting shaft (123), and the limiting shaft (123) slides in the limiting groove (131) to limit the moving direction of the moving part (120).

7. The safety gear pulling apparatus according to claim 6, wherein: the linkage assembly (100) comprises an elastic piece (140), the elastic piece (140) comprises a first end close to the movable piece (120) and a second end close to the connecting plate (110), and the elastic piece (140) is used for driving the movable piece (120) to reset.

8. The safety gear pulling apparatus according to claim 7, wherein: the linkage assembly (100) comprises a cover plate (150), the cover plate (150) is fixedly connected with the movable piece (120), and the cover plate (150) covers the first end of the elastic piece (140).

9. The safety gear pulling apparatus according to claim 4, wherein: the movable piece (120) comprises a guide wheel (121), and the guide wheel (121) rolls along the trigger guide plate (200) to lift the brake block (311).

10. An elevator, characterized by comprising:

a car (300);

the safety gear lifting device according to any one of claims 1 to 9, connected to the bottom of the car (300);

the safety gear lifting device comprises a guide rail (400), wherein the guide rail (400) is used for being connected with a building wall, and the safety gear lifting device is connected with the guide rail (400).

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