Passenger elevator anti-fall device

Abstract

The present invention relates to the technical field of elevators, and specifically to a passenger elevator anti-fall device. The present invention is not only provided with an anti-fall plate that still has the function of preventing the passenger elevator from continuing to fall when the traction wire rope of the passenger elevator breaks, but also when the anti-fall plate is placed on the protective support plate, the locking column automatically pops out to lock the anti-fall plate, so that it will not be separated from the protective support plate, further improving the safety performance of the anti-fall device. The present invention has the following beneficial effects: first, after the anti-fall plate is placed on the protective support plate, the gravity of the passenger elevator falling down presses down the trigger column, so that the locking column automatically pops out to lock the anti-fall plate; second, after the locking column pops out, the end limit column set at the notch locks the locking column again; third, a guide column is provided on the transmission column, so that the transmission column maintains the vertical state of movement when connecting between the trigger column and the locking column; fourth, the locking column is composed of inner and outer columns, and the inner and outer columns can be separated by disassembling the locking bolt therein, so that the locking column disintegrates.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to a passenger elevator anti-falling device. Background Art

[0002] Passenger elevators are a type of lifts, which are mainly installed in high-rise buildings to facilitate passengers to go up and down floors quickly. However, once a passenger elevator fails, such as a fall, the consequences are serious. Therefore, how to improve the safety factor of passenger elevators and avoid the danger of falling is an urgent problem to be solved. Generally, passenger elevators are equipped with elevator speed limiters. When the elevator car exceeds the speed limit or even falls due to any reason during operation, and all other safety protection devices do not work, the elevator speed limiter and safety clamp will work together to stop the elevator car. However, the disadvantage of this device is that it can only play a protective role when the wire rope of the traction elevator is intact. In order to ensure that the wire rope of the traction passenger elevator can protect the passenger elevator even if it breaks, a Chinese invention patent with publication number CN113353758A and publication date 2021.09.07 discloses an anti-fall elevator car structure, and its technical means is that anti-fall plates are provided on both sides of the passenger elevator car traction frame, and a protective support plate compatible with the anti-fall plate is provided on the inner side of the car limit guide rail. When the traction wire rope breaks, the protective collar will fall off, and then the safety wire rope will naturally fall. The anti-fall plate that loses the traction of the safety wire rope will open under the action of the anti-fall plate torsion spring and be supported on the protective support plate, thereby supporting and preventing the entire car structure from falling off.

[0003] However, the disadvantage of this invention is that after the anti-fall plate is placed on the protective support plate, it is supported by the protective support plate and the top surface of the inner groove of the anti-fall plate installation groove. However, the forces applied to the protective support plate by the protective support plate and the top surface of the inner groove of the anti-fall plate installation groove are not in the same straight line, resulting in a shear force in the middle of the anti-fall plate, which is easy to separate from the protective support plate and even form a notch in the top surface of the inner groove of the anti-fall plate installation groove, causing it to separate from the protective support plate and create a risk of continuing to fall. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a passenger elevator anti-falling device, which is not only provided with an anti-falling plate that can prevent the passenger elevator from continuing to fall when the passenger elevator traction wire rope breaks, but also when the anti-falling plate is placed on the protective support plate, the locking column automatically pops out to lock the anti-falling plate so that it will not be separated from the protective support plate, thereby further improving the safety performance of the anti-falling device.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a passenger elevator anti-fall device, comprising an anti-fall plate arranged on the side of the passenger elevator and opened after the traction wire rope of the passenger elevator breaks, and a protective support plate arranged on the inner side of the elevator shaft and used to play a supporting role after the anti-fall plate is opened; it also includes a frame unit for installing the protective support plate, a trigger column unit arranged on the protective support plate, and a locking column unit arranged on the frame unit, which pops out to engage the protective support plate after the protective support plate presses down the trigger column unit.

[0006] As a preferred embodiment of the present invention, a trigger column groove for installing the trigger column unit is provided on the protective support plate; the frame unit includes a frame arranged on the left and right sides of the protective support plate, a transmission column groove arranged on the frame and connected with the trigger column groove, a starting limit column groove connected with the transmission column groove, and a locking column groove for installing the locking column unit and connected with the starting limit column groove; the trigger column unit includes a trigger column installed in the trigger column groove, a trigger column spring for pushing the trigger column upward, a transmission column arranged on the trigger column and installed in the transmission column groove, and a starting limit column arranged on the transmission column and installed in the starting limit column groove; the locking column unit includes a locking column part installed in the locking column groove, a locking column spring for pushing the locking column part outward, and a limiting groove arranged on the locking column part and for engaging the starting limit column.

[0007] As a preferred embodiment of the present invention, the frame unit also includes an end limit column groove arranged on the frame; the locking column unit also includes an end limit column installed in the end limit column groove and used to engage the limit groove when the locking column part is opened outward, and an end limit column spring used to push the end limit column outward.

[0008] As a preferred embodiment of the present invention, the lateral length ratio of the locking column to the anti-fall plate is 1:5-10.

[0009] As a preferred embodiment of the present invention, the trigger column unit further comprises a guide hole provided on the transmission column, and a guide column provided on an inner groove surface of the transmission column groove and installed in the guide hole.

[0010] As a preferred embodiment of the present invention, the trigger column unit further includes a soft pad arranged on the top surface of the trigger column.

[0011] As a preferred embodiment of the present invention, the locking column portion includes an outer column and an inner column, an insertion block arranged on the outer column, and a plug-in slot arranged on the inner column and used for installing the insertion block.

[0012] As a preferred embodiment of the present invention, the locking column portion also includes an inner bolt hole arranged on the inner column and connected to the plug-in slot, an outer bolt hole arranged on the insertion block, and a locking bolt installed in the inner bolt hole and the outer bolt hole.

[0013] As a preferred embodiment of the present invention, both left and right sides of the protective support plate are provided with trigger column units and matching locking column units.

[0014] A passenger elevator comprises the above-mentioned passenger elevator anti-falling device.

[0015] In summary, the present invention has the following beneficial effects:

[0016] First, after the anti-fall plate is placed on the protective support plate, the gravity of the falling passenger elevator presses down the trigger column, causing the locking column to automatically pop out and lock the anti-fall plate;

[0017] Second, after the locking column pops out, the end limit column set at the notch will lock the locking column again to prevent the locking column from sliding out of the slot due to slight movement of the passenger elevator;

[0018] Third, a guide column is provided on the transmission column, so that the transmission column can maintain vertical movement when connecting between the trigger column and the locking column to avoid jamming;

[0019] Fourth, the locking column is composed of an inner and outer column. When the rescue work is completed, the inner and outer columns can be separated by removing the locking bolt, so that the locking column disintegrates, thereby canceling the limiting effect on the anti-fall plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of embodiment 1;

[0021] Figure 2 This is a schematic diagram when the anti-fall plate is not placed on the protective board;

[0022] Figure 3 yes Figure 2 Schematic diagram of the middle fall protection plate placed on the protective carrying plate;

[0023] Figure 4 It is a more detailed schematic diagram of the trigger column unit and the locking column unit;

[0024] Figure 5 yes Figure 4 Schematic diagram of the middle fall protection plate resting on the protective pallet (but not completely on it, a part of it blocks the locking column);

[0025] Figure 6 yes Figure 4 Schematic diagram of the middle fall protection plate placed on the protective support plate;

[0026] Figure 7 yes Figure 4 The figure includes a schematic diagram of the guide column and the installation position of the cushion;

[0027] Figure 8 It is a schematic diagram of the installation position of the end limit column;

[0028] Fig. 9 is a schematic diagram of a locking column portion, wherein the inner column and the outer column are not mounted together;

[0029] Fig.10 yes Fig. 9 Schematic diagram of the inner column and outer column installed together.

[0030] In the accompanying drawings, the components represented by each reference numeral are as follows: anti-fall plate 1, protective support plate 2, frame unit 3, trigger column unit 4, locking column unit 5, trigger column slot 201, frame 301, transmission column slot 302, starting limit column slot 303, locking column slot 304, end limit column slot 305, trigger column 401, trigger column spring 402, transmission column 403, starting limit column 404, guide hole 405, guide column 406, cushion 407, locking column part 501, locking column spring 502, limit slot 503, end limit column 504, end limit column spring 505, outer column 501a, inner column 501b, insertion block 501c, plug-in slot 501d, inner bolt hole 501e, outer bolt hole 501f, locking bolt 501g. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0033] Embodiment 1, as Figure 1-10 As shown, a passenger elevator anti-falling device includes an anti-falling plate 1 which is arranged on the side of the passenger elevator and opens after the traction wire rope of the passenger elevator breaks, and a protective support plate 2 which is arranged on the inner side of the elevator shaft and is used to play a supporting role after the anti-falling plate 1 is opened; it also includes a frame unit 3 for installing the protective support plate 2, a trigger column unit 4 arranged on the protective support plate 2, and a locking column unit 5 which is arranged on the frame unit 3 and pops out to engage the protective support plate 2 after the protective support plate 2 presses down the trigger column unit 4. Among them, how the anti-falling plate 1 opens after the traction wire rope breaks, and the way the anti-falling plate 1 acts on the protective support plate 2 after opening, please refer to the background technology, and will not be described in detail in this embodiment. Figure 2As shown, when the anti-falling plate 1 does not act on the protective support plate 2, the trigger column unit 4 protrudes outward. When the traction wire rope of the passenger elevator breaks and falls, as shown in FIG. Figure 3 As shown, when the anti-falling plate 1 acts on the protective support plate 2, it will press the trigger column unit 4 protruding outward from top to bottom, and the locking column unit 5 will pop out to lock the anti-falling plate 1 from top to bottom, so that the anti-falling plate 1 has another structure to limit its movement from the top, so that the anti-falling plate 1 is not easy to separate from the protective support plate 2, and the shear force between the passenger elevator and the protective support plate 2 on the anti-falling plate 1 will be reduced. The entire linkage logic is: the anti-falling plate 1 opens - falls onto the protective support plate 2 - presses down the trigger column unit 4 - the trigger column unit 4 drives the locking column unit 5 to pop out - locks the anti-falling plate 1.

[0034] The specific structure and linkage method of each unit will be described in detail below.

[0035] <About how the trigger column unit 4 drives the locking column unit 5 to pop out>

[0036] The protective support plate 2 is provided with a trigger column groove 201 for installing the trigger column unit 4; the frame unit 3 includes a frame 301 arranged on the left and right sides of the protective support plate 2, a transmission column groove 302 arranged on the frame 301 and connected to the trigger column groove 201, a starting limit column groove 303 connected to the transmission column groove 302, and a locking column groove 304 for installing the locking column unit 5 and connected to the starting limit column groove 303; the trigger column unit 4 includes a trigger column 401 installed in the trigger column groove 201, which is used to push upward. The trigger column spring 402 of the trigger column 401, the transmission column 403 arranged on the trigger column 401 and installed in the transmission column slot 302, and the starting limit column 404 arranged on the transmission column 403 and installed in the starting limit column slot 303; the locking column unit 5 includes a locking column part 501 installed in the locking column slot 304, a locking column spring 502 for pushing the locking column part 501 outward, and a limit slot 503 arranged on the locking column part 501 and used to engage the starting limit column 404. Figure 4 As shown, normally the trigger column 401 bulges outwards under the action of the trigger column spring 402. Figure 5 As shown, when the anti-fall plate 1 presses down the trigger column unit 4, it actually presses on the top surface of the trigger column 401, causing the trigger column 401 to sink, driving the transmission column 403 on one side to sink together, which also drives the starting limit column 404 set at the left end of the transmission column 403 to sink, until the top of the starting limit column 404 is out of engagement with the limit groove 503, and the elastic potential energy of the locking column spring 502 is released, so that the locking column part 501 pops outward along the locking column groove 304. At this time, the anti-fall plate 1 has not completely fallen, and the side of the anti-fall plate 1 supports the outer end of the locking column part 501. Figure 6As shown, when the anti-fall plate 1 is completely dropped, the locking column 501 passes over the anti-fall plate 1 and is engaged thereon, so as to prevent the anti-fall plate 1 from being separated from the protective support plate 2. As for why the anti-fall plate 1 is designed to have its side against the outer end of the locking column 501 before it is completely dropped, the reason is that at the moment when the anti-fall plate 1 and the protective support plate 2 first come into contact, the anti-fall plate 1 is subjected to a force in the opposite direction from the protective support plate 2, causing the anti-fall plate 1 to be bounced up. At this time, if there is no protection from the locking column 501, it is easy to be separated from the protective support plate 2 and cause danger. Therefore, when the locking column 501 is against the outer end of the locking column 501 at the side, it can come to the top of the anti-fall plate 1 in the first place to play a protective role.

[0037] In addition, in order to take into account both the ejection speed and the blocking effect on the anti-falling plate 1, in a preferred solution, the lateral length ratio of the locking column 501 to the anti-falling plate 1 is 1:5-10.

[0038] <How to lock again after the locking column 501 pops out>

[0039] The frame unit 3 also includes an end limit column groove 305 arranged on the frame 301; the locking column unit 5 also includes an end limit column 504 installed in the end limit column groove 305 and used to engage the limit groove 503 when the locking column part 501 is opened outward, and an end limit column spring 505 used to push the end limit column 504 outward.

[0040] like Figure 4 , 5 As shown in FIG. 3 , when the locking column 501 is not completely ejected from the locking column slot 304, the side of the locking column 501 pushes the end limiting column 504 into the end limiting column slot 305, and when the locking column 501 is completely ejected from the locking column slot 304, as shown in FIG. Figure 6 As shown, the limiting groove 503 is aligned with the position of the end limiting column 504, and the end limiting column 504 pops out under the action of the end limiting column spring 505, engaging the limiting groove 503, thereby fixing the locking column part 501 and preventing it from moving.

[0041] <About Locking Column 501>

[0042] like Fig. 9 , 10As shown, the locking column 501 includes an outer column 501a and an inner column 501b, an insert block 501c disposed on the outer column 501a, and a plug-in slot 501d disposed on the inner column 501b and used to install the insert block 501c. The inner column 501b is always in the locking column slot 304 when the locking column 501 is active, and the outer column 501a is outside the locking column slot 304 when the locking column 501 pops out, that is, the portion of the locking column 501 that acts on the anti-fall plate 1 is the outer column 501a, and the outer column 501a and the inner column 501b are connected together by inserting the insert block 501c into the plug-in slot 501d.

[0043] In addition, the locking column 501 further includes an inner bolt hole 501e provided on the inner column 501b and communicating with the insertion slot 501d, an outer bolt hole 501f provided on the insertion block 501c, and a locking bolt 501g installed in the inner bolt hole 501e and the outer bolt hole 501f. When the outer column 501a and the inner column 501b are connected together by inserting the insertion block 501c into the insertion slot 501d, the inner bolt hole 501e and the outer bolt hole 501f are aligned to form a channel, and the locking bolt 501g is inserted into the channel to fix the inner bolt hole 501e and the outer bolt hole 501f, thereby fixing the outer column 501a and the inner column 501b. When the passenger elevator rescue is completed, the position of the passenger elevator needs to be readjusted. At this time, the anti-falling plate 1 should be removed, or the anti-falling plate 1 should be removed from the protective support plate 2. It is difficult to directly remove the anti-falling plate 1, so the best way is to remove the locking column 501 from the top of the anti-falling plate 1, so as to facilitate the removal of the anti-falling plate 1 from the protective support plate 2. The removal method is to pull out the locking bolt 501g from the channel formed by the inner bolt hole 501e and the outer bolt hole 501f, and then move the outer column 501a in the horizontal direction to pull out the insertion block 501c from the plug-in slot 501d. In fact, as long as the locking bolt 501g is pulled out from the channel formed by the inner bolt hole 501e and the outer bolt hole 501f, and then the passenger elevator is moved so that the anti-falling plate 1 can be separated from the outer column 501a and the inner column 501b by a slight movement.

[0044] <Other auxiliary devices>

[0045] like Figure 7As shown, the trigger column unit 4 also includes a guide hole 405 provided on the transmission column 403, and a guide column 406 provided on the inner groove surface of the transmission column groove 302 and installed in the guide hole 405. The inventor found in the test that when the anti-fall plate 1 presses down the trigger column 401, there is a probability that the right end of the transmission column 403 will fall faster than the left end, so that the starting limit column 404 will not fall straight in the vertical direction, which will cause the starting limit column 404 to be stuck between the limit groove 503 and the starting limit column groove 303. Therefore, the purpose of setting the guide column 406 is to make the left end and the right end keep the same speed when the trigger column 401 drives the transmission column 403 to fall, so as to avoid the stuck phenomenon.

[0046] In addition, the trigger column unit 4 also includes a soft pad 407 arranged on the top surface of the trigger column 401. When the anti-fall plate 1 first contacts the trigger column 401, it will make a loud noise, which has a great impact on the rescued person in the object who is in panic, so the soft pad 407 can reduce the noise to a certain extent, which helps to calm the mood of the trapped person in the object and facilitate the subsequent rescue work.

[0047] In addition, the terms "vertical", "horizontal", "top", "bottom", "front", "back", "up", "down", "inside", "outside", etc. mentioned in the embodiments of the present invention indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A passenger elevator anti-falling device, comprising an anti-falling plate (1) arranged on the side of the passenger elevator and opened after the traction wire rope of the passenger elevator breaks, and a protective support plate (2) arranged on the inner side of the elevator shaft and used to play a supporting role after the anti-falling plate (1) is opened; characterized in that: The protective support plate (2) further comprises a frame unit (3) for mounting the protective support plate (2), a trigger column unit (4) arranged on the protective support plate (2), and a locking column unit (5) arranged on the frame unit (3) and popping out to engage with the protective support plate (2) when the protective support plate (2) presses down the trigger column unit (4); the protective support plate (2) is provided with a trigger column slot (201) for mounting the trigger column unit (4); the frame unit (3) comprises a frame (301) arranged on the left and right sides of the protective support plate (2), a transmission column slot (302) arranged on the frame (301) and connected to the trigger column slot (201), and a starting limit column slot (303) connected to the transmission column slot (302) and used for mounting the locking column unit (5) and connected to the starting limit column slot (303) 03) connected to the locking column slot (304); the trigger column unit (4) comprises a trigger column (401) installed in the trigger column slot (201), a trigger column spring (402) used to push the trigger column (401) upward, a transmission column (403) arranged on the trigger column (401) and installed in the transmission column slot (302), and a starting limit column (404) arranged on the transmission column (403) and installed in the starting limit column slot (303); the locking column unit (5) comprises a locking column portion (501) installed in the locking column slot (304), a locking column spring (502) used to push the locking column portion (501) outward, and a limit slot (503) arranged on the locking column portion (501) and used to engage the starting limit column (404).

2. A passenger elevator anti-falling device according to claim 1, characterized in that: The frame unit (3) further comprises an end limiting column groove (305) arranged on the frame (301); the locking column unit (5) further comprises an end limiting column (504) installed in the end limiting column groove (305) and used to engage the limiting groove (503) when the locking column part (501) is opened outwards, and an end limiting column spring (505) used to push the end limiting column (504) outwards.

3. A passenger elevator anti-falling device according to claim 1, characterized in that: The transverse length ratio of the locking column (501) to the anti-fall plate (1) is 1:5-10.

4. A passenger elevator anti-falling device according to claim 1, characterized in that: The trigger column unit (4) further comprises a guide hole (405) arranged on the transmission column (403), and a guide column (406) arranged on the inner groove surface of the transmission column groove (302) and installed in the guide hole (405).

5. A passenger elevator anti-falling device according to claim 1, characterized in that: The trigger column unit (4) further comprises a soft pad (407) arranged on the top surface of the trigger column (401).

6. A passenger elevator anti-falling device according to claim 1, characterized in that: The locking column portion (501) comprises an outer column (501a) and an inner column (501b), an insertion block (501c) arranged on the outer column (501a), and an insertion groove (501d) arranged on the inner column (501b) and used for installing the insertion block (501c).

7. A passenger elevator anti-falling device according to claim 6, characterized in that: The locking column portion (501) further comprises an inner bolt hole (501e) arranged on the inner column (501b) and communicating with the insertion slot (501d), an outer bolt hole (501f) arranged on the insertion block (501c), and a locking bolt (501g) installed in the inner bolt hole (501e) and the outer bolt hole (501f).

8. A passenger elevator anti-falling device according to claim 1, characterized in that: The left and right sides of the protective support plate (2) are both provided with a trigger column unit (4) and a matching locking column unit (5).

9. A passenger elevator, characterized in that: It comprises the passenger elevator anti-fall device as described in any one of claims 1-8.

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