Elevator slow descending equipment

Abstract

The utility model provides an elevator slow descent device which comprises a base, a buffering assembly, a locking assembly, an elastic piece, a sealing cover and a speed sensor, a containing groove is formed in the base, the buffering assembly is rotatably arranged in the containing groove, the sealing cover is hinged to a groove opening of the containing groove, the sealing cover is used for sealing the containing groove, and the speed sensor is arranged in the containing groove. The speed sensor, the locking assembly and the elastic piece are all arranged on the base, so that the buffering device is contained in the containing groove under the condition that an elevator normally operates, the containing groove is sealed through the sealing cover, and the situation that the buffering device is corroded by dirt and water in an elevator shaft is effectively avoided; when the elevator falls at a high speed due to an electrical fault, and the speed sensor detects that the falling speed of the elevator reaches a threshold value, a signal indicating that the falling speed is too high is transmitted to the locking assembly, the buffering device is unlocked by the locking assembly, and the buffering device with the elastic piece is popped out to buffer the elevator.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator protection technical field especially relates to a kind of elevator slow descent equipment. BACKGROUND

[0002] The buffer device (including buffer, buffer pad etc.) of elevator is used to absorb impact force and kinetic energy generated in the process of elevator operation, to ensure that elevator does not cause excessive damage to passengers and equipment when high-speed falling caused by electrical failure.

[0003] But in prior art, the device for buffering elevator is exposed in elevator shaft for a long time. There may be moisture or sundries in elevator shaft, and the device for buffering is easily affected by dirt, moisture and corrosion, which further leads to the failure of the device for buffering when high-speed falling caused by electrical failure. SUMMARY

[0004] Therefore, the utility model aims at providing elevator slow descent equipment, which aims to solve the problem that the device for buffering in prior art is easily affected by dirt, moisture and corrosion, which further leads to the failure of the device for buffering when high-speed falling caused by electrical failure.

[0005] The utility model provides a kind of elevator slow descent equipment, including base, buffer assembly, locking assembly, elastic piece, sealing cover and speed sensor, the accommodating groove is set up on the base, the buffer assembly is rotatably located in the accommodating groove, the sealing cover is hinged in the slot opening of the accommodating groove, the sealing cover is used to seal the accommodating groove, the speed sensor, the locking assembly and the elastic piece are all located on the base, the speed sensor is used to detect the falling speed of elevator, the locking assembly is used to unlock the buffer assembly along the horizontal direction accommodated in the accommodating groove when the speed sensor detects that the falling speed of elevator reaches threshold value, the elastic piece is used to drive the buffer assembly to rotate to vertical direction when the speed sensor detects that the falling speed of elevator reaches threshold value, so that the buffer assembly buffers elevator.

[0006] Further, the base is provided with a hinged lug, the buffer assembly is provided with a hinged end, the hinged end and the hinged lug are rotatably connected by a hinge shaft, the elastic piece is a torsion spring, the torsion spring is sleeved on the hinge shaft, one end of the torsion spring is connected to the buffer assembly, and the other end is connected to the hinged lug.

[0007] Further, the buffer assembly comprises a telescopic rod, a buffer spring, a stop plate and a buffer sleeve, one end of the telescopic rod is telescopically inserted into the buffer sleeve, the other end is connected with the stop plate, the buffer spring is sleeved on the telescopic rod, two ends of the buffer spring are respectively abutted on the stop plate and the buffer sleeve, and the hinged end is arranged on one end of the buffer sleeve away from the telescopic rod.

[0008] Further, the locking assembly comprises a locking pin, a compression spring and an electromagnetic block, the base is provided with a guide hole for inserting the locking pin, the compression spring is arranged in the guide hole, the buffer sleeve is provided with a clamping hole for inserting the locking pin, the compression spring is used to drive the locking pin to be inserted into the clamping hole to lock the buffer assembly in the accommodating groove, and the electromagnetic block is used to be electrified to drive the locking pin to be separated from the clamping hole, so that the torsion spring drives the buffer assembly to rotate to the vertical direction.

[0009] Further, the locking pin comprises a guide surface and a clamping surface, the guide surface and the clamping surface are arranged in close proximity, the guide surface is used to abut against the buffer sleeve, so that the buffer sleeve drives the locking pin to compress the compression spring, and the clamping surface is used to abut against the clamping hole to lock the buffer assembly in the accommodating groove.

[0010] Further, the base is provided with a support step, and the support step is used to support the sealing cover.

[0011] Further, the sealing cover is provided with a sealing strip at the edge, and the sealing strip is used to seal the gap between the sealing cover and the support step.

[0012] Beneficial Effects: This utility model provides an elevator slow-descent device, including a base, a buffer assembly, a locking assembly, an elastic element, a sealing cover, and a speed sensor. The base has a receiving groove, and the buffer assembly is rotatably disposed within the receiving groove. The sealing cover is hinged to the opening of the receiving groove and is used to seal the receiving groove. The speed sensor, locking assembly, and elastic element are all disposed on the base. The speed sensor is used to detect the elevator's falling speed. The locking assembly is used to unlock the buffer assembly, which is located horizontally within the receiving groove, when the speed sensor detects that the elevator's falling speed has reached a threshold. The elastic element is used to drive the buffer assembly to rotate vertically when the speed sensor detects that the elevator's falling speed has reached the threshold, so that the buffer assembly can buffer the elevator. Therefore, the buffer device of this application is housed in the receiving groove when the elevator is operating normally, and the receiving groove is sealed with a sealing cover, which effectively prevents dirt and moisture in the elevator shaft from corroding the buffer device; when the elevator falls at high speed due to an electrical fault, the speed sensor detects that the falling speed of the elevator has reached the threshold, and transmits the signal of excessive falling speed to the locking component, which unlocks the buffer device and pops out the elastic buffer device to buffer the elevator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the elevator descent device of this utility model;

[0014] Figure 2 Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a cross-sectional schematic diagram of the elevator descent device of this utility model;

[0016] Figure 4 This is a schematic diagram of the locking assembly.

[0017] Figure 5 This is a schematic diagram of the elevator deceleration device of this utility model installed in the elevator shaft;

[0018] Figure 6 This is a schematic diagram of the buffer assembly (excluding the buffer spring).

[0019] In the diagram: 1. Base; 10. Receiving groove; 11. Hinge ear; 12. Guide hole; 13. Support step; 2. Buffer assembly; 20. Hinge end; 21. Hinge shaft; 22. Telescopic rod; 23. Buffer spring; 24. Stop plate; 25. Buffer sleeve; 251. Snap-fit ​​hole; 3. Locking assembly; 31. Locking pin; 311. Guide surface; 312. Snap-fit ​​surface; 32. Compression spring; 33. Electromagnetic block; 4. Elastic element; 5. Sealing cover; 51. Sealing strip; 6. Speed ​​sensor. Detailed Implementation

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1 to 6 The utility model provides a kind of elevator slow descent equipment, including pedestal 1, buffer assembly 2, locking assembly 3, elastic member 4, sealing cover 5 and speed sensor 6, the pedestal 1 is equipped with accommodating groove 10, the buffer assembly 2 is rotatably located in the accommodating groove 10, the sealing cover 5 is hinged in the slot of the accommodating groove 10, the sealing cover 5 is used to seal the accommodating groove 10, the speed sensor 6, the locking assembly 3 and the elastic member 4 are all located on the pedestal 1, the speed sensor 6 is used to detect the falling speed of elevator, the locking assembly 3 is used to unlock the buffer assembly 2 along the horizontal direction and is accommodated in the accommodating groove 10 when the speed sensor 6 detects that the falling speed of elevator reaches threshold value, the elastic member 4 is used to drive the buffer assembly 2 to rotate to vertical direction when the speed sensor 6 detects that the falling speed of elevator reaches threshold value, so that the buffer assembly 2 buffers elevator.

[0022] In the application, speed sensor 6 can measure the relative motion speed of elevator by detecting the reflected light of elevator surface. Or measure the speed of elevator by emitting ultrasonic signal and receiving the signal reflected from elevator. Locking assembly 3 and speed sensor 6 are communicatively connected, and speed sensor 6 connects locking assembly 3 through elevator control system. Specifically, the buffer device of the application is accommodated in accommodating groove 10 under normal operation of elevator, and the accommodating groove 10 is sealed with sealing cover 5, which effectively avoids the corrosion of dirt and moisture in elevator shaft on the buffer device. When elevator moves up and down, speed sensor 6 (such as optical sensor) will monitor the actual motion speed of elevator and transmit speed data to elevator control system. The control system of elevator will receive the signal from speed sensor 6 and perform real-time calculation. The control system usually sets a "safety speed limit" (i.e. threshold value), and when the actual speed of elevator exceeds the threshold value, the control system will identify the overspeed condition and transmit the signal of falling speed too fast to locking assembly 3, and locking assembly 3 will unlock the buffer device, and elastic member 4 will pop out the buffer device to buffer elevator.

[0023] In an embodiment, the base 1 is provided with a hinged lug 11, the buffer assembly 2 is provided with a hinged end 20, the hinged end 20 and the hinged lug 11 are rotationally connected through a hinged shaft 21, the elastic member 4 is a torsion spring, the torsion spring is sleeved on the hinged shaft 21, one end of the torsion spring is connected to the buffer assembly 2, and the other end is connected to the hinged lug 11. In this embodiment, when the buffer assembly 2 is accommodated in the accommodating groove 10, the buffer assembly 2 compresses the torsion spring, and the torsion spring stores elastic potential energy. When the elevator needs to be buffered, the elastic potential energy drives the buffer device to pop out to buffer the elevator.

[0024] In an embodiment, the buffer assembly 2 comprises a telescopic rod 22, a buffer spring 23, a stop plate 24 and a buffer sleeve 25, one end of the telescopic rod 22 is telescopically inserted into the buffer sleeve 25, the other end is connected to the stop plate 24, the buffer spring 23 is sleeved on the telescopic rod 22, two ends of the buffer spring 23 abut against the stop plate 24 and the buffer sleeve 25 respectively, and the hinged end 20 is arranged on the end of the buffer sleeve 25 away from the telescopic rod 22. In this embodiment, the buffer spring 23 absorbs the kinetic energy of the elevator to achieve the purpose of buffering.

[0025] In an embodiment, the locking assembly 3 comprises a locking pin 31, a compression spring 32 and an electromagnetic block 33, the base 1 is provided with a guide hole 12 for inserting the locking pin 31, the compression spring 32 is arranged in the guide hole 12, the buffer sleeve 25 is provided with a clamping hole 251 for inserting the locking pin 31, the compression spring 32 is used to drive the locking pin 31 to insert into the clamping hole 251 to lock the buffer assembly 2 in the accommodating groove 10, and the electromagnetic block 33 is used to be electrified to drive the locking pin 31 to be separated from the clamping hole 251, so that the torsion spring drives the buffer assembly 2 to rotate to the vertical direction. In this embodiment, when the control system transmits a signal of too fast falling speed to the locking assembly 3, the control system will electrify the electromagnetic block 33. The electromagnetic block 33 generates a magnetic force under the condition of electrification. Under the action of the magnetic force, the electromagnetic block 33 attracts the locking pin 31 back, the buffer sleeve 25 is separated from the constraint of the locking pin 31, and is rotated to the vertical direction under the action of the torsion spring.

[0026] In one possible implementation, the locking pin 31 comprises a guiding surface 311 and a clamping surface 312, which are arranged in close proximity, the guiding surface 311 being used to abut against the buffer sleeve 25 for the buffer sleeve 25 to drive the locking pin 31 to compress the compression spring 32, and the clamping surface 312 being used to abut against the clamping hole 251 to lock the buffer assembly 2 in the accommodating groove 10. In this implementation, the guiding surface 311 facilitates the buffer sleeve 25 to enter the accommodating groove 10 by rotation. When the locking pin 31 corresponds to the clamping hole 251, the locking pin 31 enters the clamping hole 251 and fixes the buffer sleeve 25 by the clamping surface 312.

[0027] In one possible implementation, the base 1 is provided with a support step 13, which is used to support the sealing cover 5. Further, the sealing cover 5 is provided with a sealing strip 51 at the edge thereof, which is used to seal the gap between the sealing cover 5 and the support step 13. The sealing strip 51 can effectively prevent water vapor or sundries from entering the accommodating groove 10.

[0028] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0029] The foregoing is merely intended for describing the technical solutions of the present application, but not for limiting the same; even though the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features thereof; and such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An elevator gentle descent device characterized by: The application relates to an elevator buffer device, which comprises a base (1), a buffer assembly (2), a locking assembly (3), an elastic member (4), a sealing cover (5) and a speed sensor (6), a containing groove (10) is formed in the base (1), the buffer assembly (2) is rotatably arranged in the containing groove (10), the sealing cover (5) is hingedly arranged at the groove opening of the containing groove (10), the sealing cover (5) is used for sealing the containing groove (10), the speed sensor (6), the locking assembly (3) and the elastic member (4) are arranged on the base (1), the speed sensor (6) is used for detecting the falling speed of the elevator, the locking assembly (3) is used for unlocking the buffer assembly (2) contained in the containing groove (10) along the horizontal direction when the speed sensor (6) detects that the falling speed of the elevator reaches a threshold value, and the elastic member (4) is used for driving the buffer assembly (2) to rotate to the vertical direction when the speed sensor (6) detects that the falling speed of the elevator reaches the threshold value, so that the buffer assembly (2) buffers the elevator.

2. The gentle descent elevator system of claim 1, wherein: The base (1) is provided with a hinged lug (11), the buffer assembly (2) is provided with a hinged end (20), the hinged end (20) and the hinged lug (11) are rotatably connected through a hinge shaft (21), the elastic member (4) is a torsional spring, the torsional spring is sleeved on the hinge shaft (21), one end of the torsional spring is connected with the buffer assembly (2), and the other end is connected with the hinged lug (11).

3. The elevator gentle descent device according to claim 2, characterized in that: The buffer assembly (2) comprises a telescopic rod (22), a buffer spring (23), a stop plate (24) and a buffer sleeve (25), one end of the telescopic rod (22) is telescopically inserted into the buffer sleeve (25), the other end is connected with the stop plate (24), the buffer spring (23) is sleeved on the telescopic rod (22), and the two ends of the buffer spring (23) abut against the stop plate (24) and the buffer sleeve (25) respectively, and the hinged end (20) is arranged on one end of the buffer sleeve (25) away from the telescopic rod (22).

4. The elevator gentle descent device according to claim 3, characterized in that: The locking assembly (3) comprises a locking pin (31), a compression spring (32) and an electromagnetic block (33), a guide hole (12) is formed in the base (1) and can be used for inserting the locking pin (31), the compression spring (32) is arranged in the guide hole (12), a clamping hole (251) is formed in the buffer sleeve (25) and can be used for inserting the locking pin (31), the compression spring (32) is used for driving the locking pin (31) to be inserted into the clamping hole (251) so as to lock the buffer assembly (2) in the containing groove (10), and the electromagnetic block (33) is used for being electrified to drive the locking pin (31) to be separated from the clamping hole (251), so that the torsional spring drives the buffer assembly (2) to rotate to the vertical direction.

5. The gentle descent elevator system of claim 4, wherein: The locking pin (31) comprises a guide surface (311) and a clamping surface (312), which are arranged in close proximity, the guide surface (311) is used for abutting with the buffer sleeve (25) to drive the locking pin (31) to compress the compression spring (32) by the buffer sleeve (25), and the clamping surface (312) is used for abutting with the clamping hole (251) to lock the buffer assembly (2) in the accommodating groove (10).

6. The gentle descent elevator system of claim 1, wherein: The base (1) is provided with a support step (13), and the support step (13) is used for supporting the sealing cover (5).

7. The gentle descent elevator system of claim 6, wherein: An edge of the sealing cover (5) is provided with a sealing strip (51), and the sealing strip (51) is used for sealing the gap between the sealing cover (5) and the support step (13).

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