Elevator linkage locking device

Abstract

The utility model discloses an elevator linkage locking device, and relates to the technical field of elevator safety devices, the elevator linkage locking device comprises an elevator car and a guide rail, the side edge of the elevator car is fixedly provided with a mounting seat, the middle part of the mounting seat is provided with a sliding groove, and the guide rail can relatively slide in the sliding groove; the containing cavities are formed in the positions, located on the two sides of the sliding groove, in the mounting base, and the cross section of the upper portion of each containing cavity is in a first trapezoid shape; the limiting block is arranged in the containing cavity, the limiting block can move up and down in the containing cavity, and the cross section of the upper portion of the limiting block is in a second trapezoid shape. Through the arrangement of the mounting seat, and the limiting block and the friction block which are arranged in the mounting seat, the device can directly clamp the guide rail, a falling elevator is locked by virtue of friction force, a special guide rail does not need to be used, the structure is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety devices, in particular to an elevator linkage locking device. Background Art

[0002] The elevator locking device is usually installed on the elevator car. It can slow down and lock the elevator when it stalls, thereby protecting the passengers in the elevator. It can also lock the position of the elevator when it is stationary to prevent the elevator from moving and avoid shearing. However, when the maintenance is not in place, the elevator is overloaded, or there are foreign objects on the guide rails, the safety clamp will have insufficient locking force. Therefore, there are certain safety hazards in stopping the elevator only by the safety clamp linkage mechanism on the elevator.

[0003] In the Chinese patent publication number CN117864899A, an elevator linkage locking device is proposed. The device is provided with a rotating assembly. When the elevator is out of control, the rotating assembly stops rotating, and the mounting plate continues to fall to cause the extrusion rod to squeeze the first airbag. The gas in the first airbag passes through the air pipe to lock the auxiliary locking assembly. At the same time, the connecting rod locks the locking assembly, which can effectively brake the elevator and ensure the safety of passengers.

[0004] However, when using the device, a special guide rail provided with a blocking block is required, which increases the cost of use and reduces the convenience of using the device. At the same time, since the device is driven by an electric telescopic rod, the device cannot play a locking role when the power is off. Utility Model Content

[0005] The utility model provides an elevator linkage locking device, which has the advantages of simple structure, no need to use special guide rails and still has a locking effect when the power is off, so as to solve the problems raised in the background technology.

[0006] In order to achieve the purpose of simple structure, no need to use special guide rails and still have a locking effect when the power is off, the utility model provides the following technical solutions: an elevator linkage locking device, including a car and a guide rail, and also includes: a mounting seat is fixedly provided on the side of the car, and a sliding groove penetrating the mounting seat is opened in the middle of the side of the mounting seat away from the car, and the guide rail can slide relatively in the sliding groove; an accommodating cavity, the mounting seat is provided with an accommodating cavity on both sides of the sliding groove, and the upper cross-section of the accommodating cavity is a first trapezoidal shape, and The upper side length of the first trapezoid is smaller than the lower side length; a limit block, the limit block is arranged in the accommodating cavity, and the limit block can move up and down in the accommodating cavity, the cross-section of the upper part of the limit block is a second trapezoid, and the upper side length of the second trapezoid is smaller than the lower side length; a friction block, a limit groove penetrating the limit block is provided in the limit block, the friction block is arranged in the limit groove, one end of the friction block contacts the accommodating cavity, a through groove is provided on the side of the accommodating cavity close to the guide rail, and the other end of the friction block passes through the through groove and contacts the guide rail.

[0007] As a preferred technical solution of the utility model, the cross-section of the friction block is a third trapezoid, the upper side length of the third trapezoid is smaller than the lower side length, the inclined surface of the third trapezoid contacts the inclined surface of the first trapezoid, and the vertical surface of the third trapezoid contacts the guide rail.

[0008] As a preferred technical solution of the present utility model, the inclined surfaces of the first trapezoid, the second trapezoid and the third trapezoid have the same inclination angle.

[0009] As a preferred technical solution of the utility model, a friction part is provided on the vertical surface of the third trapezoid, and the friction part can increase the friction between the friction block and the guide rail; the friction part is an anti-slip material or an anti-slip structure.

[0010] As a preferred technical solution of the utility model, guide strips are fixedly provided on both sides of the limit block, and guide grooves are opened on the side walls of the accommodating cavity, and the guide strips can slide in the guide grooves.

[0011] As a preferred technical solution of the utility model, a spring is provided between the lower end of the limit block and the accommodating cavity, and the spring can push the limit block upward.

[0012] As a preferred technical solution of the utility model, an electromagnet is fixedly provided at the bottom end of the mounting seat at a position corresponding to the limit block, and the electromagnet can pull the limit block downward after being energized.

[0013] As a preferred technical solution of the present invention, both sides of the slide groove corresponding to the guide rail are provided with protection parts, and the protection parts can reduce the wear of the slide groove on the guide rail.

[0014] Compared with the prior art, the utility model provides an elevator linkage locking device having the following features:

[0015] Beneficial effects:

[0016] 1. The elevator linkage locking device, by providing a mounting seat, and a limit block and a friction block arranged in the mounting seat, enables the device to directly clamp the guide rail and lock the falling elevator by friction. No special guide rail is required. The device can be installed on the basis of the existing structure and can be used. The structure is simple and easy to use.

[0017] 2. The elevator linkage locking device is provided with a spring and an electromagnet. When the electromagnet is energized, the limit block compresses the spring and is located at the lower part of the accommodating chamber, and the locking function is not performed. When the elevator system is accidentally powered off, the limit block receives the reset action of the spring and moves to the upper part of the accommodating chamber, so that the device performs the locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the internal structure of the mounting seat of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the accommodating cavity of the utility model;

[0022] Figure 5 This is a side sectional view of the accommodation chamber of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the limit block and the friction block of the utility model;

[0024] Figure 7 This is a schematic diagram of the cooperation between the friction block and the guide rail of the utility model.

[0025] In the figure: 1. car; 2. guide rail; 3. mounting seat; 4. sliding groove; 5. electromagnet; 6. accommodating chamber; 7. through groove; 8. limit block; 81. guide strip; 82. limit groove; 9. friction block; 91. friction part; 10. spring; 11. guide groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 - Figure 7 The utility model discloses an elevator linkage locking device, including a car 1 and a guide rail 2, and also includes a mounting seat 3 fixedly provided on the side of the car 1, the mounting seat 3 is located between the car 1 and the guide rail 2, and a sliding groove 4 penetrating the mounting seat 3 is opened in the middle of the mounting seat 3 away from the car 1, and the guide rail 2 can slide relatively in the sliding groove 4, and the relative sliding here refers to the guide rail 2 being stationary while the sliding groove 4 moves.

[0028] And, combined with Figure 3 - Figure 5 An accommodating cavity 6 is provided on both sides of the sliding groove 4 in the mounting seat 3. The upper cross-section of the accommodating cavity 6 is a first trapezoid, and the upper side length of the first trapezoid is smaller than the lower side length, so that the upper part of the accommodating cavity 6 tends to be retracted upward. A limit block 8 is also provided inside the accommodating cavity 6, and the limit block 8 can move up and down in the accommodating cavity 6. The cross-section of the upper part of the limit block 8 is a second trapezoid, and the upper side length of the second trapezoid is smaller than the lower side length, so that the limit block 8 will not be limited by the upper part of the accommodating cavity 6 when moving to the upper part of the accommodating cavity 6.

[0029] Furthermore, a limiting groove 82 is provided in the limiting block 8 and passes through the limiting block 8. A friction block 9 is provided in the limiting groove 82, and the friction block 9 can move horizontally along the limiting groove 82. One end of the friction block 9 is in contact with the accommodating cavity 6, so that the inner wall of the accommodating cavity 6 can support the friction block 9. A through groove 7 is provided on the side of the accommodating cavity 6 close to the guide rail 2, and the other end of the friction block 9 passes through the through groove 7 and contacts with the guide rail 2.

[0030] In the present embodiment, one end of the two friction blocks 9 clamps the guide rail 2 by friction force, and the other ends of the two friction blocks 9 are against the inner wall of the accommodating chamber 6. When the car 2 tends to move downward, the guide rail 2 will tend to move upward relative to the car 1, thereby driving the friction blocks 9 to move upward, and retaining the vertical movement trend under the limiting action of the limit block 8. At this time, since the upper part of the inner wall of the accommodating chamber 6 is an upwardly contracted trapezoidal structure, the other end of the friction block 9 is squeezed by the inner wall of the accommodating chamber 6 and tends to move horizontally toward the guide rail 1, thereby increasing the friction between the friction block 9 and the guide rail 2 until the position of the car 1 is locked.

[0031] Combination Figure 3 and Figure 6 In order to increase the contact area between the friction block 9 and the inner wall of the accommodating chamber 6, it is preferred that the cross-section of the friction block 9 is a third trapezoid, the upper side length of the third trapezoid is smaller than the lower side length, and the inclined surface of the third trapezoid contacts the inclined surface of the first trapezoid, thereby reducing the pressure of the friction block 9 on the inner wall of the accommodating chamber 6, and the vertical surface of the third trapezoid contacts the guide rail 2, thereby increasing the friction between the friction block 9 and the guide rail 2 through parallel contact planes.

[0032] Combined with Figure 4- Figure 6 In order to facilitate the movement of the limit block 8 and the friction block 9 in the accommodating chamber 6, it is preferred that the inclined surfaces of the first trapezoid, the second trapezoid and the third trapezoid have the same inclination angle, so that the limit block 8 and the friction block 9 will not be limited by the trapezoidal structure of the accommodating chamber 6 when moving upward in the accommodating chamber 6.

[0033] Combination Figure 6 In order to increase the friction between the friction block 9 and the guide rail 2, a friction portion 91 is provided on the vertical surface of the third trapezoid. The friction portion 91 can increase the friction between the friction block 9 and the guide rail 2, thereby improving the locking effect. The friction portion 91 here is an anti-slip material or an anti-slip structure. The anti-slip material can be wear-resistant iron or ceramic composite material, and the anti-slip structure can be a nail-like structure or a serrated structure.

[0034] Combination Figure 3 , Figure 5 or Figure 6 In order to make the limit block 8 move in the vertical direction, guide bars 81 are fixed on both sides of the limit block 8, and a guide groove 11 is opened on the side wall of the accommodating cavity 6. The guide bar 81 can slide in the guide groove 11, thereby preventing the limit block 8 from shaking in the accommodating cavity 6, thereby improving the stability of the device.

[0035] Combination Figure 3 In order to make the limit block 8 be located in the upper part of the accommodating chamber 6, a spring 10 is provided between the lower end of the limit block 8 and the accommodating chamber 6. The spring 10 can push the limit block 8 upward, thereby preventing the limit block 8 from sliding to the bottom of the accommodating chamber 6, so that the two ends of the friction block 9 can contact the inner wall of the accommodating chamber 6 and the surface of the guide rail 2 respectively.

[0036] Combination Figure 3 In order to prevent the friction block 9 from contacting the inner wall of the accommodating chamber 6 and the surface of the guide rail 2 when locking is not required, an electromagnet 5 is fixedly provided at the position of the limit block 8 at the bottom end of the mounting seat 3. The power on and off of the electromagnet 5 is controlled by the elevator control system. After power on, the electromagnet 5 can pull the limit block 8 downward, so that the limit block 8 compresses the spring 10 to move the lower part of the accommodating chamber 6, and then the friction block 9 is separated from the inner wall of the accommodating chamber 6. When the electromagnet 5 is powered off, the limit block 8 moves upward under the resetting action of the spring 10, so that the device performs the locking function.

[0037] Protective parts are provided on both sides of the slide groove 4 corresponding to the guide rail 2. The protective parts can reduce the wear of the slide groove 4 on the guide rail 2 and increase the service life of the rail.

[0038] The working principle and use process of the utility model are as follows: when the elevator falls down unexpectedly, the electromagnet 5 is powered off through the elevator control system, the limit block 8 moves upward under the action of the spring 10, and the friction block 9 moves upward together with the limit block 8. When the third trapezoidal portion of the friction block 9 contacts the first trapezoidal portion of the accommodating chamber 6, the friction block 9 is pushed by the first trapezoidal portion to clamp the guide rail 2. At this time, the guide rail 2 drives the friction block 9 to have an upward movement trend, and retains the vertical position under the limiting action of the limit block 8. Movement trend: since the upper part of the inner wall of the accommodating chamber 6 is a trapezoidal structure that converges upward, the other end of the friction block 9 is squeezed by the inner wall of the accommodating chamber 6 and has a tendency to move horizontally toward the guide rail 2, thereby increasing the friction between the friction block 9 and the guide rail 2 until the position of the car 1 is locked. When the position of the car 1 needs to be unlocked, the control electromagnet 5 is energized to pull the limit block 8 downward, so that the limit block 8 compresses the spring 10 and moves toward the lower part of the accommodating chamber 6, thereby disengaging the friction block 9 from the inner wall of the accommodating chamber 6 and releasing the lock.

[0039] In summary, the elevator linkage locking device, by providing a mounting seat 3, and a limit block 8 and a friction block 9 provided in the mounting seat 3, enables the device to directly clamp the guide rail 2, and rely on friction to lock the falling elevator, without the need to use a special guide rail, and can be used by installing the device on the basis of the existing structure, with a simple structure and convenient use; by providing a spring 10 and an electromagnet 5, when the electromagnet 5 is energized, the limit block 8 compresses the spring 10 and is located at the lower part of the accommodating chamber 6, and does not perform the locking function. When the elevator system is accidentally powered off, the limit block 8 receives the reset action of the spring 10 and moves to the upper part of the accommodating chamber 6, so that the device performs the locking function.

[0040] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator linkage locking device, comprising a car (1) and a guide rail (2), characterized in that: Also includes: A mounting seat (3) is fixedly provided on the side of the car (1); a sliding groove (4) penetrating the mounting seat (3) is provided in the middle of the mounting seat (3) away from the car (1); and the guide rail (2) can slide relatively in the sliding groove (4); An accommodating cavity (6), wherein the mounting seat (3) is provided with an accommodating cavity (6) on both sides of the sliding groove (4), the upper cross section of the accommodating cavity (6) being in the shape of a first trapezoid, and the upper side length of the first trapezoid being smaller than the lower side length; A limit block (8), the limit block (8) being arranged in the accommodating cavity (6), and the limit block (8) being able to move up and down in the accommodating cavity (6), the cross section of the upper portion of the limit block (8) being a second trapezoid, and the upper side length of the second trapezoid being smaller than the lower side length; A friction block (9), wherein a limiting groove (82) penetrating the limiting block (8) is provided in the limiting block (8), the friction block (9) is arranged in the limiting groove (82), one end of the friction block (9) contacts the accommodating cavity (6), a through groove (7) is provided on a side of the accommodating cavity (6) close to the guide rail (2), and the other end of the friction block (9) passes through the through groove (7) and contacts the guide rail (2).

2. An elevator linkage locking device according to claim 1, characterized in that: The cross section of the friction block (9) is a third trapezoid, the upper side length of the third trapezoid is smaller than the lower side length, the inclined surface of the third trapezoid contacts the inclined surface of the first trapezoid, and the vertical surface of the third trapezoid contacts the guide rail (2).

3. An elevator linkage locking device according to claim 2, characterized in that: The inclined surfaces of the first trapezoid, the second trapezoid and the third trapezoid have the same inclination angle.

4. An elevator linkage locking device according to claim 2, characterized in that: A friction portion (91) is provided on the vertical surface of the third trapezoid, and the friction portion (91) can increase the friction force between the friction block (9) and the guide rail (2); The friction part (91) is made of anti-slip material or anti-slip structure.

5. The elevator linkage locking device according to claim 1, characterized in that: Guide strips (81) are fixedly arranged on both sides of the limit block (8), and a guide groove (11) is opened on the side wall of the accommodating cavity (6), and the guide strip (81) can slide in the guide groove (11).

6. An elevator linkage locking device according to claim 1, characterized in that: A spring (10) is provided between the lower end of the limiting block (8) and the accommodating chamber (6), and the spring (10) can play a role in pushing the limiting block (8) upwards.

7. An elevator linkage locking device according to claim 1, characterized in that: An electromagnet (5) is fixedly provided at the bottom end of the mounting seat (3) at a position corresponding to the limit block (8), and the electromagnet (5) can pull the limit block (8) downwards after being energized.

8. The elevator linkage locking device according to claim 1, characterized in that: Both sides of the slide groove (4) corresponding to the guide rail (2) are provided with protection parts, and the protection parts can reduce the wear of the slide groove (4) on the guide rail (2).

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