Elevator buffer device

Abstract

The present invention discloses an elevator buffer device, which is provided with buffers of different lengths and converts different buffers through a transmission structure, and a locking device is also provided in the transmission structure, which can lock the position state of the buffer, so that the buffers of different lengths cannot be converted without a command. Due to the different lengths of the buffers, the safety of the elevator staff working in the elevator pit is not only guaranteed, but also the longer buffer provides a stretching space for the staff, so that their work can be carried out more smoothly.

Description

Technical Field

[0001] The invention relates to an elevator device, in particular to an elevator buffer device. Background Art

[0002] A certain distance needs to be left between the elevator pit floor and the elevator car. On the one hand, this allows enough space for the elevator to slow down. On the other hand, it provides space for people to move around and for safety during elevator maintenance.

[0003] In the prior art, the pit depth is set relatively large. Although it is convenient for workers to inspect and repair, there is no safety maintenance protection device in the pit, which poses a threat to the safety of pit workers. The pit depth is small, which is not convenient for repair and maintenance. There will be a problem that the height of the elevator pit floor is too small from the elevator car. This situation is called a shallow pit. Because the bottom surface cannot be excavated, when repairing the elevator, it is not only difficult for maintenance workers to move their bodies, but also it is easy for the car to collide with the ground. Summary of the invention

[0004] The present invention aims to solve the above-mentioned technical problem and provides an elevator buffer device by converting buffers of different lengths.

[0005] The present invention is achieved through the following technical solutions:

[0006] An elevator buffer device comprises a base, a first buffer and a second buffer; the first buffer is longer than the second buffer, the second buffer is connected to the first buffer, and the first buffer is perpendicular to the second buffer;

[0007] It also includes a second guide structure and a transmission structure. The second guide structure includes a connecting rod and a second slide groove arranged on the base. The two ends of the connecting rod are respectively hinged to the base and the first buffer. The second slide groove is connected from the end of the base to the middle of the base. The movable end of the first buffer is connected to the second slide groove. When the transmission structure drives the sliding end of the first buffer to slide along the second guide structure, the first buffer is in the middle of the base and the second buffer is in the middle of the base. The two states of upward and upward appear alternately. The second guide structure is connected from the end of the base to the middle of the base, and the gear is arranged in the middle of the base.

[0008] Preferably, a locking structure is also included, which includes a locking pin and a first limit block; the locking pin and the first limit block, one is set on the first buffer and the other is set on the base; the connection between the locking pin and the first limit block is used to lock the first buffer in a vertical state.

[0009] Preferably, the transmission structure comprises a gear and a rack; one of the gear and the rack is connected to the base, and the other is connected to the sliding end of the first buffer, and the gear is meshed with the rack.

[0010] Preferably, it further comprises an electromagnetic lock arranged on the base, wherein the pin shaft of the electromagnetic lock is connected to the first limit block; the electromagnetic lock is used to drive the first limit block away from the lock pin.

[0011] Preferably, the first limiting block is provided with a bayonet for connecting a locking pin.

[0012] Preferably, it also includes a contact lock arranged on the base or the first buffer; the contact lock includes a shell and a buckle; when the first buffer is switched to a horizontal state, the base and the first buffer are buckled through the contact lock, and the horizontal state of the first buffer is locked.

[0013] Preferably, the contact lock is arranged at one end of the base away from the guide structure, or at a position on the first buffer away from its sliding end; when the first buffer is in a horizontal state, the end of the base away from the guide structure is buckled with the first buffer through the contact lock.

[0014] Preferably, a positioning pin is provided at the sliding end of the first buffer, and the positioning pin is connected in the second sliding groove, and the positioning pin can slide along the second sliding groove.

[0015] Preferably, a positioning pin is provided at the sliding end of the first buffer, the positioning pin is connected in the second sliding groove, and the positioning pin can slide along the second sliding groove; the positioning pin serves as a locking pin.

[0016] Preferably, the first buffer and the second buffer both include a buffer bracket and a buffer head; the end of the first buffer away from its sliding end is the buffer head; the end of the second buffer away from the first buffer is the buffer head; the buffer bracket of the first buffer is longer than the buffer bracket of the second buffer.

[0017] The beneficial effect is: compared with the prior art, the elevator buffer device with a locking device of the present invention is provided with buffer heads of different lengths. In order to meet the maintenance needs of the elevator or other operations that need to be completed in the elevator pit, different buffer heads can be adjusted to provide convenience for the staff, so that the distance between the elevator car and the bottom of the pit is increased, the stretching space of the staff is increased, and at the same time, the elevator car is prevented from landing in the elevator staff studio, causing casualties.

[0018] The beneficial effect is: compared with the prior art, an elevator buffer device of the present invention is provided with buffer heads of different lengths. In order to meet the maintenance needs of the elevator or other operations that need to be completed in the elevator pit, different buffer heads can be adjusted to provide convenience for the staff, so that the distance between the elevator car and the bottom of the pit is increased, the stretching space of the staff is increased, and at the same time, the elevator car is prevented from landing in the elevator staff studio, causing casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 is a schematic diagram of the structure of the buffer device;

[0021] Figure 2 is a schematic top view of the buffer device;

[0022] Figure 3 It is a schematic diagram of the rotation of the first buffer;

[0023] Figure 4 This is a working schematic diagram of the first buffer;

[0024] Figure 5 Schematic diagram of electromagnetic lock. DETAILED DESCRIPTION

[0025] like Figure 1-5 As shown, an elevator buffer device includes a base, a first buffer 2 and a second buffer 3; the first buffer 2 is longer than the second buffer 3, the second buffer 3 is fixed on the first buffer 2, the first buffer 2 is perpendicular to the second buffer 3, so when the first buffer 2 rotates under power drive, it will drive the second buffer 3 to rotate together, the elevator buffer device also includes a second guide structure and a transmission structure, the sliding end of the first buffer 2 is connected to the second guide structure, the second guide structure is arranged on the base, when the transmission structure drives the sliding end of the first buffer 2 to slide along the second guide structure, the two states of the first buffer 2 upward and the second buffer 3 upward appear alternately, and the implementation method is: when the motor 1 is operating, the transmission structure works to drive the sliding end of the first buffer 2 to slide on the guide structure, and the elevator can switch the two buffers to work on the bottom of the elevator car according to its needs.

[0026] Although the buffer device can be stopped simultaneously when the motor is stopped, it is safer to provide a locking structure.

[0027] The transmission structure includes a gear 7 and a rack 8. The gear and rack can be configured as: a gear 7 and a rack 8, the gear 7 is connected to the base, the rack 8 is connected to the sliding end of the first buffer 2, the gear 7 is meshed with the rack 8, the motor 1 is arranged on the base, and the motor 1 drives the gear 7 to rotate, so that the rack 8 meshed with it operates. The second guide structure is connected from the end of the base to the middle of the base, and the gear 7 is arranged in the middle of the base; when the sliding end of the first buffer 2 is at the end of the base, the first buffer 2 is in a horizontal state and the second buffer 3 is vertically upward; when the transmission structure drives the sliding end of the first buffer 2 to slide to the middle of the base, the first buffer is vertically upward at the middle position of the base and the second buffer 3 is in a horizontal state.

[0028] The gear and rack can also be configured as follows: the second guide structure is connected from the end of the base to the middle of the base; the rack 8 is connected to the base, the rack 8 can be longer than the second guide structure, one end of the rack 8 is aligned with one end of the base, which can also be one end of the second slide groove 14, and the other end of the rack 8 is aligned with the other end of the second slide groove 14 or is longer than the second slide groove 14; when the sliding end of the first buffer 2 is at the end of the base, the first buffer 2 is in a horizontal state and the second buffer 3 is vertically upward; when the transmission structure drives the sliding end of the first buffer 2 to slide to the middle of the base, the first buffer 2 is vertically upward at the middle position of the base and the second buffer 3 is in a horizontal state.

[0029] The second buffer 3 includes one connected to the middle of the first buffer 2 . A second buffer 3 can be arranged on the first buffer 2 , and the second buffer is installed in the middle of the first buffer 2 .

[0030] Two second buffers 3 may be installed on the first buffer 2 , and the two second buffers 3 may be installed at two ends of the buffer bracket 5 of the first buffer 2 .

[0031] The device is provided with a locking structure, which includes a locking pin and a first limit block 12; the locking pin and the first limit block 12, one is provided on the first buffer 2, and the other is provided on the base. Specifically, there are two situations: the locking pin can be provided on the base, and the first limit block 12 is provided on the first buffer 2, and the first limit block 12 can slide on the second slide groove. After the first buffer 2 drives the first limit block 12 to approach the locking pin, the first limit block 12 can be buckled on the locking pin to lock the first buffer 2. The connection between the locking pin and the first limit block 12 is used to lock the first buffer 2 in a vertical state.

[0032] Alternatively, the lock pin is disposed on the first buffer 12 and the first limit block is disposed on the base. When the lock pin directly serves as a positioning pin, the lock pin can slide on the second slide groove. When the lock pin slides toward the first limit block 12, the first limit block 12 buckles the lock pin to lock the first buffer 2. The sliding end of the first buffer 2 is provided with a positioning pin 13 connected to the second slide groove 14, and the positioning pin 13 can slide along the second slide groove 14. The lock pin serves as the positioning pin 13.

[0033] The elevator buffer device includes a first guide structure arranged on the base, and the first guide structure is used to control the directional sliding of the rack 8. The first guide structure includes a first slide groove 11, and the rack 8 is partially accommodated in the first slide groove 11. The first slide groove 11 is arranged on the fixed plate 10 on the base, and the upper boundary of the rack 8 is matched with the first slide groove 11 arranged on the fixed plate 10. The rack 8 can slide on the first slide groove 11, and the matching method can be that a groove is arranged on the upper boundary of the rack 8, and a protrusion is arranged on the first slide groove 11 to match the groove of the rack 8, and the groove can slide on the protrusion, and there are grooves on both sides of the protrusion, and the groove of the first slide groove 11 has a protrusion on both sides of the surface of the groove to match the groove, and the protrusion is stuck in the groove and can slide on the groove. The cooperation between the protrusion and the groove prevents the rack 8 from falling from the first slide groove 11. It is also possible that protrusions are provided on both side surfaces of the upper boundary of the first slide groove 11, recesses are provided on the inner walls of the two side surfaces of the first slide groove 11, and protrusions corresponding to the recesses are provided on the rack 8. The protrusions and the cooperation can also achieve that the rack 8 can slide on the first slide groove 11 without falling. The implementation methods are not limited to these two methods.

[0034] The second guide structure includes a connecting rod 9 and a second slide groove 14 arranged on the base, the two ends of the connecting rod 9 are respectively hinged to the base and the first buffer 2, and the sliding end of the first buffer 2 is connected to the second slide groove 14; the sliding end of the first buffer 2 is provided with a positioning pin 13 connected to the second slide groove 14, and the positioning pin 13 can slide along the second slide groove 14; and also includes a second limit block 15, and the second limit block 15 is provided with a limiting groove 16, and the positioning pin 13 is connected to the second slide groove 14 and the limiting groove 16 at the same time. When the first buffer 2 and the second buffer 3 are switched, the motor 1 drives the rack 5 to operate, the rack 8 slides on the first slide groove 11, and then drives the positioning pin 13 to slide on the second slide groove, and the sliding end of the first buffer 2 slides to the left. Because there is a connecting rod 9 intersecting the first buffer 2 and the base, the connecting rod 9 rotates when the first buffer 2 slides relative to the base, pushing the first buffer 2 to rotate to a vertical state, and the buffer head 6 of the first buffer 2 faces the bottom of the elevator car, and the second buffer 3 rotates to a horizontal direction accordingly.

[0035] The first buffer 2 and the second buffer 3 both include a buffer bracket 5 and a buffer head 6; the end of the first buffer 2 away from its sliding end is the buffer head 6; the end of the second buffer 3 away from the first buffer 2 is the buffer head 6; the buffer bracket 5 of the first buffer 2 is longer than the buffer bracket of the second buffer 3. The different lengths of the buffer bracket 5 enable the reserved space at the bottom of the pit to be switched when there are staff working at the bottom of the elevator pit.

[0036] The transmission structure can also be a screw nut pair and a motor, both of which are arranged on the base, the motor is used to drive the screw to rotate, and the nut block is connected to the sliding end of the first buffer 2; the motor drives the screw to rotate, and the nut block drives the sliding end of the first buffer 2 to slide in the second slide groove 14. Similarly, the first buffer 2 is driven to slide on the second slide groove 14, the connecting rod 9 drags the first buffer to rotate, and the locking device locks the position of the first buffer 2.

[0037] The transmission structure can also be a cylinder, such as a gas cylinder or a hydraulic cylinder; the housing (fixed end) and piston rod (output end) of the cylinder, one of which is hinged to the base and connected to the sliding end of the first buffer 2. If the housing of the cylinder is hinged to the base, the piston rod of the cylinder is hinged to the sliding end of the first buffer 2, the cylinder piston rod retracts and slides the sliding end of the first buffer, thereby driving the first buffer 2 to rotate, the connecting rod 9 pushes the first buffer 2, the first buffer 2 rotates to a vertical state, and the locking pin buckles into the first limit block 12, and the first buffer is locked.

[0038] The invention also includes an electromagnetic lock arranged on the base, the pin shaft of the electromagnetic lock is connected to the first limit block; the electromagnetic lock is used to drive the first limit block away from the lock pin. The first limit block is provided with a bayonet for connecting the lock pin.

[0039] It also includes a contact lock arranged on the base or the first buffer; the contact lock includes a shell and a buckle; when the first buffer is switched to a horizontal state, the base and the first buffer are buckled through the contact lock, and the horizontal state of the first buffer is locked.

[0040] The contact lock is arranged at one end of the base away from the guide structure, or at a position on the first buffer away from its sliding end; when the first buffer is in a horizontal state, the end of the base away from the guide structure is buckled with the first buffer through the contact lock. The left end of the base is provided with an inclined surface. When the contact lock is arranged on the first buffer, when the first buffer is in a horizontal state, the buckle of the contact lock can buckle the left end of the base.

[0041] The method of use and operation of the device are as follows: when the elevator is operating normally, the buffer head 6 of the second buffer 3 faces the bottom of the car to support the elevator operation, the contact lock 17 locks the fixed plate 10 and the first buffer 2, the electromagnetic lock 4 is running, the first limit block 12 does not rotate, the positioning pin 16 is stuck at the terminal of the second slide groove 14, and the gear 7 and rack 8 do not move. When the elevator needs to adjust the reserved space at the bottom of the pit, the motor 1 starts to work, the electric contact lock 17 opens and no longer locks the fixed plate 10 and the first buffer 2, the gear 7 starts to move, and the rack 8 engaged with the gear 7 slides on the first slide groove 11 on the fixed plate 10, and at the same time drives the second limit block 15 fixed to the rack 8 to move. Because the positioning pin 13 is stuck in the second limit block 15 through the second slide groove 14, the positioning pin 13 also slides. Because the second slide groove 14 is set in an arc shape, There is a deviation in the upper and lower spaces, and the locating pin 13 can make up for the difference in space on the limiting groove 16 of the second limiting block 15. Because the locating pin 13 is hinged to the first buffer 2 at the same time, and a connecting rod 9 is provided on the fixed plate 10 and the first buffer 2, and the installation method is hinged, the sliding of the locating pin 13 can drive the hinged end of the first buffer 2 to slide in the same direction. Due to the setting of the connecting rod 9, the connecting rod 9 can support the first buffer 2 to rotate to the vertical direction. When the first buffer 2 rotates to the vertical direction, the locating pin 13 is also stuck in the positioning hole of the first limiting block 12. This is because the electromagnetic lock 4 is closed here to drive the first limiting block 12 to rotate and clamp the locating pin 13. At this time, the second buffer 3 is rotated to the horizontal position due to the rotation of the first buffer 2, and the buffer head 2 of the first buffer 2 is facing the bottom of the elevator car to make the pit bottom space larger, so as to facilitate the staff to perform pit bottom operations.

[0042] The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments can be combined with each other to form new embodiments. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modification or equivalent replacement that does not deviate from the spirit and scope of the present invention shall be included in the scope of the technical solutions of the present invention.

Claims

1. An elevator buffer device, characterized in that: The invention comprises a base, a first buffer (2) and a second buffer (3); the first buffer (2) is longer than the second buffer (3), the second buffer (3) is connected to the first buffer (2), and the first buffer (2) and the second buffer (3) are perpendicular to each other; It also includes a second guide structure and a transmission structure, the second guide structure includes a connecting rod (9) and a second slide groove arranged on the base, the two ends of the connecting rod (9) are respectively hinged to the base and the first buffer (2), the second slide groove is connected from the end of the base to the middle of the base, and the movable end of the first buffer (2) is connected to the second slide groove; When the transmission structure drives the sliding end of the first buffer (2) to slide along the second guide structure, two states occur alternately, namely, the first buffer (2) is in the middle of the base and upwards, and the second buffer is in the middle of the base and upwards; A positioning pin (13) is provided at the sliding end of the first buffer (2), the positioning pin (13) is connected to the second sliding groove (14), and the positioning pin (13) can slide along the second sliding groove (14); The second slide groove (14) is configured to be arc-shaped; It also includes a locking structure, which includes a locking pin and a first limiting block (12); one of the locking pin and the first limiting block (12) is arranged on the first buffer (2) and the other is arranged on the base; the connection between the locking pin and the first limiting block (12) is used to lock the first buffer (2) in a vertical state; A positioning pin (13) is provided at the sliding end of the first buffer (2); the positioning pin (13) is connected to a second sliding groove (14); the positioning pin (13) can slide along the second sliding groove (14); the positioning pin (13) serves as a locking pin.

2. An elevator buffer device according to claim 1, characterized in that: The transmission structure comprises a gear and a rack; one of the gear and the rack is connected to the base, and the other is connected to the sliding end of the first buffer (2); the gear (7) is meshed with the rack (8).

3. An elevator buffer device according to claim 1, characterized in that: It also includes an electromagnetic lock arranged on the base, wherein the pin shaft of the electromagnetic lock is connected to the first limit block (12); the electromagnetic lock is used to drive the first limit block (12) away from the lock pin.

4. An elevator buffer device according to claim 1, characterized in that: The first limiting block (12) is provided with a bayonet (18) for connecting with a locking pin.

5. An elevator buffer device according to claim 1, characterized in that: It also includes a contact lock (17) arranged on the base or the first buffer; the contact lock (17) includes a shell and a buckle; when the first buffer (2) is switched to a horizontal state, the base and the first buffer are buckled through the contact lock, and the horizontal state of the first buffer (2) is locked.

6. An elevator buffer device according to claim 5, characterized in that: The contact lock is arranged at one end of the base away from the guide structure, or at a position on the first buffer away from its sliding end; when the first buffer is in a horizontal state, the end of the base away from the guide structure is buckled with the first buffer through the contact lock.

7. An elevator buffer device according to claim 1, characterized in that: The first buffer (2) and the second buffer (3) both comprise a buffer bracket and a buffer head; the end of the first buffer (2) away from its sliding end is the buffer head; the end of the second buffer (3) away from the first buffer (2) is the buffer head; the buffer bracket of the first buffer (2) is longer than the buffer bracket of the second buffer (3).

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