A mobile buffer for an elevator

Abstract

The present application relates to elevator buffer seat technical field, specifically to a kind of mobile buffer for elevator, including fixedly installed on base anti-collision pad and two single-side supporting mechanism, each single-side supporting mechanism includes buffer, swing arm, torsion spring and clamping mechanism, the mobile buffer for elevator, swing arm can be rotated by torsion spring to push and move, and by the mode of rotation, swing arm drives buffer can be moved to the beam bottom of elevator car with faster speed.It can be released swing arm by clamping mechanism under the condition of elevator power on, so that swing arm drives buffer to support.If power failure occurs, if the elevator does not fall, clamping mechanism keeps clamping swing arm, and falls, then swing arm can be separated from clamping mechanism by elevator car, ensure that the device can be used in the case of power failure, protect elevator car.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator buffer seat, in particular to a mobile buffer for elevator. BACKGROUND

[0002] The safety equipment of the elevator mainly includes the following speed limiter, safety gear and buffer, when the safety gear fails to effectively brake, or when the low layer stalls at no more than the rated speed, it protects the car. But the buffer distance can affect the buffer effect of the elevator bridge box, and because the elevator shaft pit is too shallow, the height of the buffer cannot be too high, affecting the buffer effect.

[0003] Chinese patent application number: CN201910613448.3, name: height variable buffer group for elevator, discloses that the buffer body is composed of a movable main buffer with a height calculated according to the rated speed of the elevator and a fixed auxiliary buffer with a height calculated according to the crawling speed of the elevator, the crawling speed of the elevator is less than the rated speed of the elevator, the bottom of the movable main buffer is provided with a guide seat, the guide seat is located on the sliding guide rail fixed on the bottom surface of the elevator pit, one end of the sliding guide rail is provided with a stop block, and the other end is provided with a stop block, a compression spring is connected between the guide seat and the stop block, one side of the guide seat connected with the compression spring is further connected with a moving steel wire rope, the end of the moving steel wire rope is connected with a driving mechanism, and the driving mechanism is electrically connected with a crawling speed monitoring mechanism. The present application fundamentally solves the problem that the existing elevator buffer is limited by the rated speed of the elevator, resulting in a deep elevator pit, greatly reduces the depth of the elevator pit, saves the construction cost, and is convenient for elevator maintenance and maintenance.

[0004] The above-mentioned scheme drives the buffer to buffer the bottom of the elevator bridge box by measuring the speed when the falling speed of the elevator bridge box exceeds the preset value, but this scheme drives the buffer to move in a straight line, which is difficult to move to the required position in time because it takes a long time to move in a straight line. And the above-mentioned device cannot be used in the case of power failure, and the probability of elevator power failure increases significantly. Therefore, a mobile buffer for elevator is needed, which can move the buffer to the bottom of the elevator bridge box in a faster way, and can also protect the falling elevator bottom in the case of power failure. SUMMARY

[0005] In view of the above technical deficiencies, the purpose of the present application is to provide a mobile buffer for elevator, which can move the buffer to the bottom of the elevator bridge box in a faster way, and can also protect the falling elevator bottom in the case of power failure.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: The present application provides a mobile buffer for elevator, which comprises a crash pad fixedly installed on a base and two single-side supporting mechanisms, each single-side supporting mechanism comprises a buffer, a swing arm, a torsion spring and a clamping mechanism, one end of the swing arm is rotatably installed on the base, the buffer is fixedly installed on the other end top of the swing arm, the top of the buffer is higher than the top of the crash pad, the torsion spring is used for applying elastic force to the swing arm to make it close to the crash pad, the clamping mechanism is fixedly installed on a side plate, the clamping mechanism is clamped with the swing arm in the initial state, and a hook hole is formed in the swing arm for clamping the clamping mechanism.

[0007] Preferably, the clamping mechanism comprises a linear puller, a hook plate, a sliding column I and a rotating column, the linear puller is fixedly installed on a wall, the sliding column I is fixedly installed on the output end of the linear puller, a waist-shaped sliding groove is formed in one end of the hook plate, the sliding column I is inserted into the waist-shaped sliding groove, the rotating column is fixedly installed on the side plate, the middle part of the hook plate is rotatably installed on the rotating column, and the other end of the hook plate is hooked with the swing arm.

[0008] Preferably, the linear puller comprises an electric pull rod, a moving block I and a moving block II, the electric pull rod is fixedly installed on the wall, the moving block I is fixedly installed on the output end of the electric pull rod, the moving block II is horizontally slidably installed on the side plate, the sliding column I is fixedly installed on the moving block II, a plug hole is formed in each of the moving block I and the moving block II, a plug-in mechanism is arranged between the moving block I and the moving block II, the plug-in mechanism is used for clamping the two plug holes, the plug-in mechanism is fixedly installed on the wall, a power-off pulling-out mechanism is fixedly arranged above the plug-in mechanism, the power-off pulling-out mechanism is used for pulling up the plug-in mechanism after power-off, an elastic pushing mechanism is fixedly arranged on the base, and the elastic pushing mechanism is used for applying elastic force to the hook plate to make it close to the electric pull rod.

[0009] Preferably, the plug-in mechanism comprises a horizontal sliding seat, a horizontal guide plate, a vertical sliding seat, a vertical sliding plate, a lifting mechanism and two plug columns, the two plug columns are fixedly installed on the bottom of the horizontal sliding seat, the two horizontal sliding seats are respectively inserted into the plug holes of the moving block I and the moving block II, the horizontal sliding seat slides with the horizontal guide plate, the horizontal guide plate is fixedly installed on the bottom of the vertical sliding seat, the vertical sliding plate is fixedly installed on the wall, the vertical sliding seat is slidably connected with the vertical sliding plate, the lifting mechanism is fixedly installed on the vertical sliding plate, and the lifting mechanism is used for pulling up the plug column by the power-off pulling-out mechanism.

[0010] Preferably, the lifting mechanism comprises a connecting plate I, a sliding column II, a hinged seat and a rotating rod, the connecting plate I is fixedly installed on the top of the vertical sliding seat, the sliding column II is fixedly installed on the connecting plate I, the hinged seat is fixedly installed on the vertical sliding plate, the rotating rod is rotatably connected with the hinged seat, a sliding groove is formed in the rotating rod, the sliding column II is inserted into the sliding groove, and the rotating rod is in transmission connection with the power-off pulling-out mechanism.

[0011] Preferably, the power-off extraction mechanism comprises a guide column, a guide block, a connecting plate two, a resisting spring one, two electromagnets and two slide columns three, the guide column is fixedly installed on the top of the side plate, the guide block is vertically slidably installed on the guide column, the slide column three is horizontally slidably installed on the guide block, the connecting plate two is fixedly installed on one end of the two slide columns three, the electromagnets are fixedly installed on the wall, the two electromagnets are respectively attracted to the two slide columns three, the resisting spring one is used for applying an elastic force away from the guide block to the connecting plate two, one end of the rotating rod is located below the guide block, and the top of the guide column is provided with a strong magnet, and the strong magnet is attracted to the guide block.

[0012] Preferably, a blocking ring one is fixedly arranged on the slide column three.

[0013] Preferably, the elastic pushing mechanism comprises a pushing column, a guide sliding plate, a resisting spring two and a blocking ring two, the guide sliding plate is fixedly installed on the side plate, the pushing column is slidably connected with the guide sliding plate, one end of the pushing column is in abutment with the hook plate, the blocking ring two is fixedly installed on the pushing column, and the resisting spring two is used for applying an elastic force away from the guide sliding plate to the blocking ring two.

[0014] The elevator movable buffer can drive the buffer to move to the bottom of the cross beam of the elevator car at a faster speed through the rotating movement of the torsional spring and the swinging arm. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 It is a perspective view of the installation state of the present application.

[0017] Figure 2 It is a partial perspective view of the present application.

[0018] Figure 3 It is a perspective view of the linear puller.

[0019] Figure 4 It is a partial perspective view of the linear puller.

[0020] Figure 5 Fig. 1 is a perspective view of the plug-in mechanism and the power-off extraction mechanism.

[0021] Figure 6 Fig. 2 is a perspective view of the plug-in mechanism.

[0022] Figure 7 Fig. 3 is an exploded perspective view of the lifting mechanism.

[0023] Figure 8 Fig. 4 is a perspective view of the power-off extraction mechanism.

[0024] Figure 9 Fig. 5 is a partial enlarged view of A in Fig. 1. Figure 3

[0025] Reference signs: 1, buffer; 2, swing arm; 3, torsion spring; 4, clamping mechanism; 4a, straight puller; 4a1, electric pull rod; 4a2, moving block one; 4a3, moving block two; 4b, hook plate; 4b1, waist-shaped sliding groove; 4c, sliding column one; 4d, rotating column; 5, base; 5a, side plate; 6, anti-collision pad; 7, plug-in mechanism; 7a, plug-in column; 7b, horizontal sliding seat; 7c, horizontal guide plate; 7d, vertical sliding seat; 7e, vertical sliding plate; 7f, lifting mechanism; 7f1, connecting plate one; 7f2, sliding column two; 7f3, hinged seat; 7f4, rotating rod; 7f5, sliding groove; 8, power-off extraction mechanism; 8a, electromagnet; 8b, guide column; 8c, guide block; 8d, sliding column three; 8e, connecting plate two; 8f, abutting spring one; 8h, strong magnet; 8s, stop ring one; 9, elastic pushing mechanism; 9a, push column; 9b, guide sliding plate; 9c, abutting spring two; 9d, stop ring two. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Embodiment: The present application provides a mobile buffer for an elevator, such as Figures 1-3 ​As shown, including fixedly installed on the base 5 on the crash pad 6 and two single side support mechanism, crash pad 6 for the smooth landing of the elevator car bottom beam support, single side support mechanism for the sharp falling of the elevator car support, each single side support mechanism includes buffer 1, swing arm 2, torsional spring 3 and clamping mechanism 4, one end of swing arm 2 rotatably mounted on the base 5, the other end of the swing arm 2 top of the buffer 1 is fixedly installed, the top of the buffer 1 is higher than the top of the crash pad 6, so that when the buffer 1 rotates to the bottom beam of the elevator car, the buffer 1 can be in contact with the bottom beam of the elevator car in priority to the crash pad 6, to support the sharp falling of the elevator car, along the buffer distance of the elevator car, the torsional spring 3 for swing arm 2 to apply close to the crash pad 6 elastic force, one end of the torsional spring 3 with the side plate 5a of the base 5, the other end of the torsional spring 3 and swing arm 2 fixed connection, the torsional spring 3 is set on the pivot for swing arm 2 rotation, clamping mechanism 4 is fixedly installed on the side plate 5a, clamping mechanism 4 and the initial state of swing arm 2 clamping, wherein the initial state of swing arm 2 is Figure 1 As shown, the state of the buffer 1 does not contact with the falling elevator car. Swing arm 2 is provided with a hook hole for clamping mechanism 4 clamping. When the buffer 1 needs to contact with the sharp falling of the elevator car, the controller will control the clamping mechanism 4 and the opening on the swing arm 2 to separate, and then the swing arm 2 will be pushed to rotate 100 degrees by the torsional spring 3, and move to the directly below of the bottom beam of the elevator car, wherein the base 5 can be provided with a stop bar for positioning and blocking the swing arm 2, the stop bar contacts with the swing arm 2 after the swing arm 2 rotates 100 degrees.

[0028] In order to realize the clamping mechanism 4 and the swing arm 2 can be separated, for this, as shown in Figure 3 and Figure 4 As shown, the clamping mechanism 4 includes linear puller 4a, hook plate 4b, slide column 4c and rotating column 4d, the linear puller 4a is fixedly installed on the wall, the slide column 4c is fixedly installed on the output end of the linear puller 4a, the hook plate 4b is provided with a waist shaped sliding groove 4b1 at one end, the slide column 4c is inserted into the waist shaped sliding groove 4b1, the rotating column 4d is fixedly installed on the side plate 5a, the middle part of the hook plate 4b is rotatably installed on the rotating column 4d, the other end of the hook plate 4b is hooked with the swing arm 2. The controller controls the linear puller 4a to work, the linear puller 4a moves the slide column 4c, so that the slide column 4c moves the hook plate 4b around the rotating column 4d, so that 4b and the swing arm 2 are separated, so that the swing arm 2 can be pushed to rotate by the torsional spring 3, that is, the clamping mechanism 4 and the swing arm 2 can be separated.

[0029] If the elevator falls due to power failure, the linear puller 4a cannot be powered to pull at this time, which causes the hook plate 4b to be unable to separate from the swing arm 2, so that the swing arm 2 cannot move below the elevator car bottom crossbeam, causing danger to the user. To this end, as shown in Figure 3 and Figure 5 The linear puller 4a includes a motor pull rod 4a1, a moving block one 4a2 and a moving block two 4a3. The motor pull rod 4a1 is fixedly installed on the wall. The moving block one 4a2 is fixedly installed on the output end of the motor pull rod 4a1. The moving block two 4a3 is slidably installed on the side plate 5a. The slide column one 4c is fixedly installed on the moving block two 4a3. The moving block one 4a2 and the moving block two 4a3 are both provided with a socket. The moving block one 4a2 and the moving block two 4a3 are provided with a plug-in mechanism 7 for clamping the two sockets. The plug-in mechanism 7 is fixedly installed on the wall. The plug-in mechanism 7 is fixedly provided with a power failure pulling mechanism 8 above. The power failure pulling mechanism 8 is used to pull the plug-in mechanism 7 upward after power failure. The base 5 is fixedly provided with an elastic pushing mechanism 9. The elastic pushing mechanism 9 is used to exert an elastic force on the hook plate 4b to approach the motor pull rod 4a1. When there is no power failure, the motor pull rod 4a1 works. The motor pull rod 4a1 pulls the moving block one 4a2 to move. Since the plug-in mechanism 7 connects the moving block one 4a2 and the moving block two 4a3, the moving block one 4a2 can drive the moving block two 4a3 to move, so that the moving block two 4a3 can push the hook plate 4b to move through the slide column one 4c. At this time, the elastic pushing mechanism 9 does not play any role. The elastic pushing mechanism 9 is compressed or released with the hook plate 4b. After power failure, the plug-in mechanism 7 pulls the power failure pulling mechanism 8 upward, so that the power failure pulling mechanism 8 releases the connection between the moving block one 4a2 and the moving block two 4a3. At this time, the elastic pushing mechanism 9 pushes the hook plate 4b to move. The hook plate 4b rotates and separates from the swing arm 2, that is, the elevator car bottom crossbeam can be supported after power failure.

[0030] During the linear displacement of the first moving block 4a2, the plug-in mechanism 7 needs to be driven to move linearly, and the plug-in mechanism 7 also needs to be able to clamp the first moving block 4a2 and the second moving block 4a3. Therefore, the plug-in mechanism 7 comprises a horizontal sliding seat 7b, a horizontal guide plate 7c, a vertical sliding seat 7d, a vertical sliding plate 7e, a lifting mechanism 7f, and two plug-in columns 7a. The two plug-in columns 7a are fixedly installed at the bottom of the horizontal sliding seat 7b, and the two horizontal sliding seats 7b are respectively inserted into the insertion holes of the first moving block 4a2 and the second moving block 4a3. The horizontal sliding seat 7b is slidingly connected with the horizontal guide plate 7c, so that when the first moving block 4a2 and the second moving block 4a3 move horizontally, the plug-in columns 7a can be driven to move horizontally along the horizontal guide plate 7c. The horizontal guide plate 7c is fixedly installed at the bottom of the vertical sliding seat 7d, and the vertical sliding plate 7e is fixedly installed on the wall. The vertical sliding seat 7d is slidingly connected with the vertical sliding plate 7e, and the lifting mechanism 7f is fixedly installed on the vertical sliding plate 7e. The lifting mechanism 7f is used for pulling the plug-in columns 7a upward by the power-off pulling-out mechanism 8. When the power-off pulling-out mechanism 8 works, the power-off pulling-out mechanism 8 pulls the vertical sliding seat 7d upward through the lifting mechanism 7f, so that the vertical sliding seat 7d can pull the plug-in columns 7a upward, that is, the first moving block 4a2 and the second moving block 4a3 are separated. When the vertical sliding seat 7d moves upward, the vertical sliding plate 7e is used for guiding the movement of the vertical sliding seat 7d.

[0031] In order to pull the vertical sliding seat 7d upward by the lifting mechanism 7f when the power-off pulling-out mechanism 8 is powered off, as shown in Figure 7 the lifting mechanism 7f comprises a connecting plate 7f1, a sliding column 7f2, a hinged seat 7f3, and a rotating rod 7f4. The connecting plate 7f1 is fixedly installed at the top of the vertical sliding seat 7d, the sliding column 7f2 is fixedly installed on the connecting plate 7f1, the hinged seat 7f3 is fixedly installed on the vertical sliding plate 7e, the rotating rod 7f4 is rotationally connected with the hinged seat 7f3, the rotating rod 7f4 is provided with a sliding groove 7f5, and the sliding column 7f2 is inserted into the sliding groove 7f5. The rotating rod 7f4 is in transmission connection with the power-off pulling-out mechanism 8. When the power-off pulling-out mechanism 8 is pressed downward, the power-off pulling-out mechanism 8 presses the rotating rod 7f4 downward, so that the rotating rod 7f4 pulls the sliding column 7f2 upward. The sliding column 7f2 pulls the vertical sliding seat 7d upward through the connecting plate 7f1, and the sliding column 7f2 slides along the sliding groove 7f5.

[0032] In order to enable the power-off pulling-out mechanism 8 to press the rotating rod 7f4 downward only when the elevator falls after being powered off, as shown in Figure 8As shown, the power-off extraction mechanism 8 includes guide posts 8b, guide blocks 8c, connecting plates two 8e, abutting springs one 8f, two electromagnets 8a and two slide posts three 8d, the guide posts 8b are fixedly installed on the top of the side plates 5a, the guide blocks 8c are vertically slidably installed on the guide posts 8b, the slide posts three 8d are horizontally slidably installed on the guide blocks 8c, the connecting plates two 8e are fixedly installed on one end of the two slide posts three 8d, the electromagnets 8a are fixedly installed on the wall, the two electromagnets 8a are respectively attracted to the two slide posts three 8d, by setting the two electromagnets 8a, when one electromagnet 8a fails, the other electromagnet 8a can still ensure the attraction of the slide posts three 8d, avoiding the abutting springs one 8f to pop out the connecting plates two 8e. The abutting springs one 8f are used to apply a repulsive force to the connecting plates two 8e away from the guide blocks 8c, the abutting springs one 8f are sleeved on the slide posts three 8d, one end of the abutting springs one 8f is in abutment with the connecting plates two 8e, and the other end of the abutting springs one 8f is in abutment with the guide blocks 8c. One end of the rotating rod 7f4 is located below the guide blocks 8c, a strong magnet 8h is arranged on the top of the guide posts 8b, and the strong magnet 8h is attracted to the guide blocks 8c. When the elevator is powered off, the electromagnets 8a release the attraction of the slide posts three 8d, the abutting springs one 8f push the connecting plates two 8e, so that the connecting plates two 8e move to a position that can be contacted by the elevator during the falling process, the elevator pushes the connecting plates two 8e downward, so that the guide blocks 8c press the rotating rod 7f4 downward, so that the swinging arm 2 can rotate. If the elevator does not fall, the strong magnet 8h is attracted to the guide blocks 8c, so that the guide blocks 8c cannot press the rotating rod 7f4 downward by gravity.

[0033] If the elevator is powered on, the electromagnets 8a need to be attracted to pull the slide posts three 8d, so that the slide posts three 8d return to the initial position, avoiding the falling elevator from contacting the connecting plates two 8e. For this purpose, as shown, Figure 8 The slide posts three 8d are fixedly provided with a stop ring one 8s, after the electromagnets 8a are powered off and released, the stop ring one 8s will contact the guide blocks 8c, the displacement of the slide posts three 8d during this process is relatively short, so that after the subsequent electromagnets 8a are powered on, the electromagnets 8a can be attracted to the slide posts three 8d.

[0034] As shown, Figure 9As shown, the elastic pushing mechanism 9 includes a pushing column 9a, a guide slide plate 9b, a contact spring 9c and a blocking ring 9d. The guide slide plate 9b is fixedly installed on the side plate 5a, the pushing column 9a is in sliding connection with the guide slide plate 9b, one end of the pushing column 9a is in contact with the hook plate 4b, the blocking ring 9d is fixedly installed on the pushing column 9a, the contact spring 9c is used to apply an elastic force to the blocking ring 9d away from the guide slide plate 9b, the contact spring 9c is sleeved on the pushing column 9a, one end of the contact spring 9c is in contact with the blocking ring 9d, and the other end of the contact spring 9c is in contact with the guide slide plate 9b. Through the pushing force of the pushing column 9a, when the plug-in mechanism 7 is released, the pushing column 9a can push the hook plate 4b to rotate, so as to ensure that the clamping mechanism 4 can be separated from the swing arm 2.

[0035] When the power is not cut off, the elevator car descends sharply, the linear puller 4a pulls the hook plate 4b to rotate, so that the hook plate 4b is separated from the swing arm 2, the swing arm 2 drives the buffer 1 to rotate 100 degrees to a position that can be contacted by the beam at the bottom of the elevator car.

[0036] When the power is cut off, the electromagnet 8a is released, so that the connecting plate 8e is pushed by the contact spring 8f to a position that can be contacted by the elevator car. If the elevator car does not descend, after the elevator is powered on, the electromagnet 8a is attracted to the slide column 8d again, so that the connecting plate 8e is reset. If the elevator car descends, the elevator car pushes the guide block 8c to move downward, so that the power-off pulling mechanism 8 pulls the plug-in mechanism 7 upward, so that the plug-in column 7a is separated from the moving block 4a2 and the moving block 4a3, and then the elastic pushing mechanism 9 pushes the hook plate 4b to move, so that the hook plate 4b is separated from the swing arm 2, the swing arm 2 drives the buffer 1 to rotate 100 degrees to a position that can be contacted by the beam at the bottom of the elevator car.

[0037] The movable buffer for the elevator can drive the swing arm 2 to rotate by the torsional spring 3, and the swing arm 2 drives the buffer 1 to move to the beam at the bottom of the elevator car at a faster speed by the rotating movement. When the elevator is powered on, the swing arm 2 can be released by the clamping mechanism 4, so that the swing arm 2 drives the buffer 1 to support. If the power is cut off, if the elevator does not descend, the clamping mechanism 4 keeps clamping the swing arm 2, and if it descends, the clamping mechanism 4 can be separated from the swing arm 2 by the elevator car, so that the device can be used in the case of power failure, and the bridge box of the elevator is protected.

[0038] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A movable buffer for an elevator, characterized in that: The invention comprises an anti-collision pad (6) fixedly mounted on a base (5) and two unilateral support mechanisms, each of which comprises a buffer (1), a swing arm (2), a torsion spring (3) and a clamping mechanism (4), one end of the swing arm (2) being rotatably mounted on the base (5), the buffer (1) being fixedly mounted on the top of the other end of the swing arm (2), the top of the buffer (1) being higher than the top of the anti-collision pad (6), the torsion spring (3) being used to apply an elastic force to the swing arm (2) to approach the anti-collision pad (6), the clamping mechanism (4) being fixedly mounted on the side plate (5a), the clamping mechanism (4) being clamped to the swing arm (2) in an initial state, and a hook hole for the clamping mechanism (4) to be clamped; The clamping mechanism (4) includes a linear puller (4a), a hook plate (4b), a sliding column (4c) and a rotating column (4d), wherein the linear puller (4a) is fixedly mounted on a wall, the sliding column (4c) is fixedly mounted on the output end of the linear puller (4a), one end of the hook plate (4b) is provided with a waist-shaped sliding groove (4b1), the sliding column (4c) is inserted into the waist-shaped sliding groove (4b1), the rotating column (4d) is fixedly mounted on the side plate (5a), the middle part of the hook plate (4b) is rotatably mounted on the rotating column (4d), and the other end of the hook plate (4b) is hooked with the swing arm (2).

2. A movable buffer for an elevator according to claim 1, characterized in that: The linear puller (4a) includes an electric pull rod (4a1), a moving block 1 (4a2) and a moving block 2 (4a3). The electric pull rod (4a1) is fixedly mounted on a wall. The moving block 1 (4a2) is fixedly mounted on the output end of the electric pull rod (4a1). The moving block 2 (4a3) can be horizontally slidably mounted on the side plate (5a). The sliding column 1 (4c) is fixedly mounted on the moving block 2 (4a3). Both the moving block 1 (4a2) and the moving block 2 (4a3) are provided with sockets. The moving block 1 A plug-in mechanism (7) is provided between (4a2) and the second moving block (4a3), and the plug-in mechanism (7) is used for clamping the two sockets. The plug-in mechanism (7) is fixedly installed on the wall. A power-off extraction mechanism (8) is fixedly provided above the plug-in mechanism (7), and the power-off extraction mechanism (8) is used for pulling the plug-in mechanism (7) upward after power is off. An elastic pushing mechanism (9) is fixedly provided on the base (5), and the elastic pushing mechanism (9) is used for applying an elastic force to the hook plate (4b) close to the electric pull rod (4a1).

3. A movable buffer for an elevator according to claim 2, characterized in that: The plug-in mechanism (7) comprises a horizontal slide (7b), a horizontal guide plate (7c), a vertical slide (7d), a vertical slide plate (7e), a tilting mechanism (7f) and two plug-in columns (7a), wherein the two plug-in columns (7a) are fixedly mounted on the bottom of the horizontal slide (7b), the two horizontal slides (7b) are respectively inserted into the jacks of the moving block 1 (4a2) and the moving block 2 (4a3), the horizontal slide (7b) is slidably connected to the horizontal guide plate (7c), the horizontal guide plate (7c) is fixedly mounted on the bottom of the vertical slide (7d), the vertical slide plate (7e) is fixedly mounted on the wall, the vertical slide (7d) is slidably connected to the vertical slide plate (7e), the tilting mechanism (7f) is fixedly mounted on the vertical slide plate (7e), and the tilting mechanism (7f) is used for the power-off extraction mechanism (8) to pull the plug-in columns (7a) upwards.

4. A movable buffer for an elevator according to claim 3, characterized in that: The tilting mechanism (7f) includes a connecting plate 1 (7f1), a sliding column 2 (7f2), an articulated seat (7f3) and a rotating rod (7f4), wherein the connecting plate 1 (7f1) is fixedly mounted on the top of the vertical sliding seat (7d), the sliding column 2 (7f2) is fixedly mounted on the connecting plate 1 (7f1), the articulated seat (7f3) is fixedly mounted on the vertical slide (7e), the rotating rod (7f4) is rotatably connected to the articulated seat (7f3), a sliding groove (7f5) is provided on the rotating rod (7f4), the sliding column 2 (7f2) is inserted into the sliding groove (7f5), and the rotating rod (7f4) is transmission-connected to the power-off extraction mechanism (8).

5. The movable buffer for an elevator according to claim 4, characterized in that: The power-off extraction mechanism (8) includes a guide column (8b), a guide block (8c), a second connecting plate (8e), a first contact spring (8f), two electromagnets (8a) and two third sliding columns (8d). The guide column (8b) is fixedly mounted on the top of the side plate (5a). The guide block (8c) can be mounted on the guide column (8b) in a vertically sliding manner. The third sliding column (8d) can be mounted on the guide block (8c) in a horizontally sliding manner. The second connecting plate (8e) is fixedly mounted on the At one end of the two sliding posts three (8d), the electromagnet (8a) is fixedly mounted on the wall. The two electromagnets (8a) are respectively attracted to the two sliding posts three (8d). The resistance spring one (8f) is used to apply elastic force to the connecting plate two (8e) away from the guide block (8c). One end of the rotating rod (7f4) is located below the guide block (8c). A strong magnet (8h) is provided on the top of the guide post (8b), and the strong magnet (8h) is attracted to the guide block (8c).

6. The movable buffer for an elevator according to claim 5, characterized in that: A retaining ring 1 (8s) is fixedly arranged on the sliding column 3 (8d).

7. The movable buffer for an elevator according to claim 6, characterized in that: The elastic pushing mechanism (9) comprises a push column (9a), a guide slide plate (9b), a second contact spring (9c) and a second retaining ring (9d), wherein the guide slide plate (9b) is fixedly mounted on the side plate (5a), the push column (9a) is slidably connected to the guide slide plate (9b), one end of the push column (9a) is in contact with the hook plate (4b), the second retaining ring (9d) is fixedly mounted on the push column (9a), and the second contact spring (9c) is used to apply an elastic force to the second retaining ring (9d) to keep it away from the guide slide plate (9b).

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