Friction plate device applied to steel wire rope brake

Abstract

The invention provides a friction plate device applied to a steel wire rope brake. The friction plate device comprises a driving friction plate, a first telescopic sleeve rod, a first supporting rod, a second telescopic sleeve rod and a second supporting rod. One end of the first telescopic loop bar is hinged to the driving friction plate through a first hinge, the center point of a hinge shaft of the hinge is a point A, and the other end is hinged to the first supporting rod through a third hinge; one end of a second telescopic loop bar is hinged to the driving friction plate through a second hinge, the center point of a hinge shaft of the hinge is a point B, the vertical position of the point B is lower than the point A, and the other end of the second telescopic loop bar is hinged to the second supporting rod through a third hinge; the first supporting rod and the second supporting rod are connected with the front plate. By adjusting the supporting angles of the first telescopic sleeve rod and the second telescopic sleeve rod to the driving friction plate, the component of the force acting on the point A by the first telescopic sleeve rod in the vertical direction is equal to the sum of the component of the force acting on the point B by the second telescopic sleeve rod in the vertical direction and the gravity of the driving friction plate, and the three forces are mutually counteracted; and the driving friction plate is stably positioned at the normal position of the rope gripper.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, in particular to a friction plate device applied to a wire rope brake. Background Art

[0002] When the elevator is frequently powered on and off, the active friction plate will move downward under the influence of gravity during the release and reset process of the electromagnet of the wire rope brake, causing the active friction plate to be out of the middle position of the rope clamp. Since the active friction plate does not have the ability to automatically reset, the normal operation and performance of the wire rope brake will be affected.

[0003] Therefore, the deviation of the active friction plate from its normal position under the action of gravity and its inability to automatically reset is one of the core issues affecting the normal operation of the wire rope brake. How to eliminate the negative impact of gravity on the position of the active friction plate so that the active friction plate can always remain in the correct position during the release and reset process of the electromagnet, thereby ensuring the normal operation and performance of the wire rope brake, has become a technical problem that needs to be urgently solved by technical personnel in this field.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The present invention aims to provide a friction plate device for a wire rope brake to address the prior art technical problem of the active friction plate deviating from its normal position under the action of gravity and failing to automatically return to its original position when the elevator frequently powers off and on. The various technical effects achieved by the preferred technical solution among the various technical solutions provided by the present invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The present invention provides a friction plate device for a wire rope brake, comprising an active friction plate, a first telescopic sleeve, a first support rod, a second telescopic sleeve and a second support rod; one end of the first telescopic sleeve is hinged to the active friction plate through a first hinge, and the other end is hinged to the first support rod through a third hinge, and the center point of the hinge axis of the first hinge is point A; one end of the second telescopic sleeve is hinged to the active friction plate through a second hinge, and the other end is hinged to the second support rod through a third hinge, and the center point of the hinge axis of the second hinge is point B, and the position of point B in the vertical direction is lower than point A; the first support rod and the second support rod are both connected to the front plate; the component in the vertical direction of the force applied by the first telescopic sleeve to point A on the active friction plate is equal to the sum of the component in the vertical direction of the force applied by the second telescopic sleeve to point B on the active friction plate and the gravity of the active friction plate.

[0008] Preferably, springs are respectively sleeved on the outside of the first telescopic sleeve and the second telescopic sleeve, so that the horizontal component of the force applied by the first telescopic sleeve on point A on the active friction plate is equal to the horizontal component of the force applied by the second telescopic sleeve on point B on the active friction plate.

[0009] Preferably, the first telescopic sleeve includes a first telescopic rod and a first telescopic sleeve slidingly sleeve arranged outside the first telescopic rod, the first telescopic rod is connected to the active friction plate through the first hinge, and the first telescopic sleeve is hinged to the first support rod through the third hinge.

[0010] Preferably, the second telescopic sleeve includes a second telescopic rod and a second telescopic sleeve slidingly sleeved outside the second telescopic rod, the second telescopic rod is connected to the active friction plate through the second hinge, and the second telescopic sleeve is hinged to the second support rod through the third hinge.

[0011] Preferably, the point A and the point B are located in the same plane as the center of gravity of the active friction plate, and the vertical center axis of the active friction plate coincides with a straight line passing through the point A and the point B.

[0012] Preferably, the center point of the third hinge axis of the third hinge is located below the center of gravity of the active friction plate.

[0013] Preferably, the active friction plate is provided with accommodating grooves arranged in parallel for accommodating the first hinge and the second hinge.

[0014] Preferably, the front plate is provided with a guide groove corresponding to the accommodating groove for accommodating the first telescopic sleeve rod and the second telescopic sleeve rod.

[0015] The preferred technical solution of the present invention can also produce at least the following technical effects:

[0016] The present invention effectively solves the technical problem in the prior art that the active friction plate deviates from its normal position under the action of gravity and cannot automatically reset when the elevator is frequently powered on and off. The present invention provides a friction plate device for a wire rope brake, comprising an active friction plate, a first telescopic sleeve, a first support rod, a second telescopic sleeve, and a second support rod; one end of the first telescopic sleeve is hinged to the active friction plate via a first hinge, and the other end is hinged to the first support rod via a third hinge, with the center point of the hinge axis of the first hinge being point A; one end of the second telescopic sleeve is hinged to the active friction plate via a second hinge, and the other end is hinged to the second support rod via a third hinge, with the center point of the hinge axis of the second hinge being point B, and point B being located lower in the vertical direction than point A; the first support rod and the second support rod are both connected to the front plate; the vertical component of the force applied by the first telescopic sleeve to point A on the active friction plate is equal to the sum of the vertical component of the force applied by the second telescopic sleeve to point B on the active friction plate and the gravity of the active friction plate.

[0017] The first telescopic sleeve and the second telescopic sleeve of the present invention are hingedly connected to the active friction plate. At the same time, the first telescopic sleeve and the first support rod, as well as the second telescopic sleeve and the second support rod, are hingedly connected, so that the first telescopic sleeve and the second telescopic sleeve can form different support angles for the active friction plate, thereby achieving a specific mechanical balance.

[0018] Specifically, the vertical component of the force exerted by the first telescopic sleeve on point A of the active friction plate is F AY The vertical component of the force of the second telescopic sleeve acting on point B on the active friction plate is F BY The gravity of the active friction plate is G. By adjusting the support angles of the first telescopic sleeve and the second telescopic sleeve on the active friction plate, the device can meet F AY =F BY +G. At this time, the active friction plate is subjected to the upward force F of the first telescopic sleeve. AY The vertical component F of the downward force of the second telescopic sleeve BY The gravity G of the active friction plate cancels each other out, and the net force on the active friction plate in the vertical direction is zero, so that the active friction plate is stably in the middle normal position of the rope gripper and will not move downward due to its own gravity. This solves the problem of the active friction plate deviating from the normal position due to gravity when the elevator is frequently powered on and off, and improves the stability and reliability of the wire rope brake during normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 in the embodiments or prior art description. Obviously, the drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is a structural schematic view of a friction plate device applied to a steel wire rope brake provided by the present application;

[0021] Figure 2 is a structural schematic view of a driving friction plate, a first telescopic sleeve rod and a second telescopic sleeve rod of a friction plate device applied to a steel wire rope brake provided by the present application;

[0022] Figure 3 is a side view of a driving friction plate, a first telescopic sleeve rod and a second telescopic sleeve rod of a friction plate device applied to a steel wire rope brake provided by the present application;

[0023] Figure 4 is a force analysis diagram of a driving friction plate of a friction plate device applied to a steel wire rope brake provided by the present application;

[0024] Figure 5 is a structural schematic view of a first telescopic sleeve rod and a second telescopic sleeve rod of a friction plate device applied to a steel wire rope brake provided by the present application.

[0025] In the drawings:

[0026] 1, driving friction plate; 101, accommodating groove;

[0027] 2, first telescopic sleeve rod; 201, first telescopic rod; 202, first telescopic sleeve;

[0028] 3, first support rod;

[0029] 4, second telescopic sleeve rod; 401, second telescopic rod; 402, second telescopic sleeve;

[0030] 5, second support rod;

[0031] 6, first hinge; 601, first hinge part a; 602, first hinge part b; 603, first hinge shaft;

[0032] 7, second hinge; 701, second hinge part a; 702, second hinge part b; 703, second hinge shaft;

[0033] 8, third hinge; 801, third hinge part a; 802, third hinge part b; 803, third hinge part c; 804, third hinge part d; 805, third hinge shaft;

[0034] 9. front plate; 901. guide groove;

[0035] 10. Steel wire rope;

[0036] 11. First spring; 12. Second spring. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0038] like Figure 1-Figure 5 As shown, the present invention provides a friction plate device for a wire rope brake 10, comprising an active friction plate 1, a first telescopic sleeve rod 2, a first support rod 3, a second telescopic sleeve rod 4 and a second support rod 5; one end of the first telescopic sleeve rod 2 is hinged to the active friction plate 1 through a first hinge 6, and the other end is hinged to the first support rod 3 through a third hinge 8, and the center point of the hinge axis of the first hinge 6 is point A; one end of the second telescopic sleeve rod 4 is hinged to the active friction plate 1 through a second hinge 7, and the other end is hinged to the second support rod 5 through a third hinge 8, and the center point of the hinge axis of the second hinge 7 is point B, and the position of point B in the vertical direction is lower than point A; the first support rod 3 and the second support rod 5 are both connected to the front plate 9; the component in the vertical direction of the force applied by the first telescopic sleeve rod 2 to point A on the active friction plate 1 is equal to the sum of the component in the vertical direction of the force applied by the second telescopic sleeve rod 4 to point B on the active friction plate 1 and the gravity of the active friction plate 1.

[0039] Furthermore, the first support rod 3 is perpendicular to the front plate 9. The second support rod 5 is perpendicular to the front plate 9.

[0040] In the present invention, the first telescopic sleeve rod 2 and the second telescopic sleeve rod 4 are hingedly connected to the active friction plate 1. At the same time, the first telescopic sleeve rod 2 and the first support rod 3 and the second telescopic sleeve rod 4 and the second support rod 5 are hingedly connected, so that the first telescopic sleeve rod 2 and the second telescopic sleeve rod 4 can form different support angles for the active friction plate 1, thereby achieving a specific mechanical balance.

[0041] Specifically, the vertical component of the force exerted by the first telescopic sleeve 2 on point A of the active friction plate 1 is F AY The vertical component of the force of the second telescopic sleeve 4 acting on point B on the active friction plate 1 is F BYThe gravity of the active friction plate 1 is G. By adjusting the support angles of the first telescopic sleeve 2 and the second telescopic sleeve 4 to the active friction plate 1, the device can meet F AY =F BY +G. At this time, the upward force F exerted by the first telescopic sleeve 2 on the active friction plate 1 AY The vertical component F of the downward force of the second telescopic sleeve 4 BY The gravity G of the active friction plate 1 and the gravity G of the active friction plate 1 cancel each other out, and the resultant force on the active friction plate 1 in the vertical direction is zero, so that the active friction plate 1 is stably in the middle normal position of the rope clamp and will not move downward due to its own gravity, thereby solving the problem of the active friction plate 1 deviating from the normal position due to gravity when the elevator is frequently powered on and off, and improving the stability and reliability of the wire rope brake 10 during normal operation.

[0042] As an optional embodiment, Figure 1 、 Figure 2 、 Figure 3 As shown, springs are respectively sleeved on the outside of the first telescopic rod 2 and the second telescopic rod 4, so that the horizontal component of the force applied by the first telescopic rod 2 to point A on the active friction plate 1 is equal to the horizontal component of the force applied by the second telescopic rod 4 to point B on the active friction plate 1.

[0043] Furthermore, a first spring 11 is sleeved on the exterior of the first telescopic sleeve 2 , and a second spring 12 is sleeved on the exterior of the second telescopic sleeve 4 .

[0044] like Figure 4 As shown, in the vertical direction, by adjusting the spring forces of the first spring 11 and the second spring 12 on the active friction plate 1 and utilizing the different support angles of the first telescopic rod 2 and the second telescopic rod 4, the force of the first telescopic rod 201 acting on the point A on the active friction plate 1 can be made to have a component F in the vertical direction. AY The vertical component of the force exerted by the second telescopic rod 401 on point B of the active friction plate 1 is F BY The gravity of the active friction plate 1 is G, that is, F AY =F BY +G. This vertical force balance makes the resultant force on the active friction plate 1 in the vertical direction zero, so that it is stably located in the middle normal position of the rope clamp and will not move downward due to its own gravity.

[0045] like Figure 4 As shown, in the horizontal direction, by adjusting the spring forces of the first spring 11 and the second spring 12, the horizontal component F of the force exerted by the first telescopic rod 201 on the point A of the active friction plate 1 can be AXEqual to the horizontal component F of the force exerted by the second telescopic rod 401 on point B of the active friction plate 1 BX , that is, F AX =F BX This horizontal force balance enables the active friction plate 1 to synchronously approach the wire rope 10, achieving uniform and stable braking.

[0046] When the electromagnet loses power, the first spring 11 and the second spring 12 release their elastic potential energy, driving the active friction plate 1 to move toward the wire rope 10, closing with the driven friction plate and clamping the wire rope 10 to achieve the braking function. When the electromagnet is energized, the active friction plate 1 can automatically return to the correct position.

[0047] As an optional embodiment, Figure 3 、 Figure 4 、 Figure 5 The first telescopic sleeve 2 shown includes a first telescopic rod 201 and a first telescopic sleeve 202 slidably sleeved outside the first telescopic rod 201. The first telescopic rod 201 is connected to the active friction plate 1 through a first hinge 6, and the first telescopic sleeve 202 is hinged to the first support rod 3 through a third hinge 8. The first spring 11 connects the first telescopic rod 201 and the first telescopic sleeve 202.

[0048] As an optional embodiment, Figure 3 、 Figure 4 、 Figure 5 As shown, the second telescopic sleeve 4 includes a second telescopic rod 401 and a second telescopic sleeve 402 slidably sleeved outside the second telescopic rod 401, the second telescopic rod 401 is connected to the active friction plate 1 through a second hinge 7, the second telescopic sleeve 402 is hinged to the second support rod 5 through a third hinge 8, and the second spring 12 connects the second telescopic rod 401 and the second telescopic sleeve 402.

[0049] The first hinge 6 includes a first hinge portion a601 provided on the active friction plate 1 , a first hinge portion b602 provided on the first telescopic rod 201 , and a first hinge shaft 603 passing through the first hinge portion a601 and the first hinge portion b602 .

[0050] The second hinge 7 includes a second hinge part a701 arranged on the active friction plate 1, a second hinge part b702 arranged on the second telescopic rod 401, and a second hinge shaft 703 passing through the second hinge part a701 and the second hinge part b702. The second hinge shaft 703 is positioned lower than the first hinge shaft 603 in the vertical direction.

[0051] The third hinge 8 includes a third hinge part a801 arranged on the first telescopic sleeve 202, a third hinge part b802 arranged on the first support rod 3, a third hinge part c803 arranged on the second telescopic sleeve 402, a third hinge part d804 arranged on the second support rod 5, and a third hinge shaft 805 passing through the third hinge part a801, the third hinge part b802, the third hinge part c803 and the third hinge part d804.

[0052] The third hinge shaft 805 serves as the fulcrum of the first telescopic rod 2 and the second telescopic rod 4, and is connected to the first hinge 6 and the second hinge 7 through the first telescopic rod 201 and the second telescopic rod 401, so that the active friction plate 1 can be freely linked up and down when subjected to the force of the first telescopic rod 201 and the second telescopic rod 401.

[0053] As an optional embodiment, Figure 3 、 Figure 4 As shown, point A and point B are in the same plane as the center of gravity of the active friction plate 1 , and the vertical center axis of the active friction plate 1 coincides with the straight line passing through point A and point B.

[0054] With this arrangement, when the first telescopic rod 201 and the second telescopic rod 401 apply force to the active friction plate 1, the force can be evenly distributed on the active friction plate 1, thereby achieving better mechanical balance, reducing the offset or tilt of the active friction plate 1 during movement, and improving the reliability and stability of the brake.

[0055] As an optional implementation, the center point of the third hinge axis 805 of the third hinge 8 is located below the center of gravity of the active friction plate 1 .

[0056] This setting can provide better support and balance.

[0057] As an optional embodiment, Figure 2 As shown, the active friction plate 1 is provided with accommodating grooves 101 arranged in parallel for accommodating the first hinge 6 and the second hinge 7 .

[0058] Furthermore, the receiving groove 101 extends in the vertical direction to provide space for the installation of the first hinge 6 and the second hinge 7 .

[0059] As an optional embodiment, Figure 1 As shown, a guide groove 901 corresponding to the accommodating groove 101 is opened on the front plate 9 for accommodating the first telescopic rod 2 and the second telescopic rod 4 .

[0060] Furthermore, the guide groove 901 extends in the vertical direction, providing guidance for the movement of the first telescopic rod 2 and the second telescopic rod 4 and limiting their range of movement.

[0061] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0062] In the description of the present invention, it should be noted that, unless otherwise specified, the term "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention depending on the specific circumstances.

[0064] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "an example" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A friction plate device for a wire rope brake, characterized in that: It includes an active friction plate, a first telescopic sleeve, a first support rod, a second telescopic sleeve and a second support rod; one end of the first telescopic sleeve is hinged to the active friction plate through a first hinge, and the other end is hinged to the first support rod through a third hinge, and the center point of the hinge axis of the first hinge is point A; one end of the second telescopic sleeve is hinged to the active friction plate through a second hinge, and the other end is hinged to the second support rod through a third hinge, and the center point of the hinge axis of the second hinge is point B, and the position of point B in the vertical direction is lower than point A; the first support rod and the second support rod are both connected to the front plate; the component in the vertical direction of the force of the first telescopic sleeve acting on point A on the active friction plate is equal to the sum of the component in the vertical direction of the force of the second telescopic sleeve acting on point B on the active friction plate and the gravity of the active friction plate.

2. The friction plate device for a wire rope brake according to claim 1, characterized in that: Springs are respectively sleeved on the outside of the first telescopic sleeve and the second telescopic sleeve, so that the horizontal component of the force applied by the first telescopic sleeve to point A on the active friction plate is equal to the horizontal component of the force applied by the second telescopic sleeve to point B on the active friction plate.

3. The friction plate device for a wire rope brake according to claim 2, characterized in that: The first telescopic sleeve includes a first telescopic rod and a first telescopic sleeve slidingly sleeved outside the first telescopic rod. The first telescopic rod is connected to the active friction plate through the first hinge, and the first telescopic sleeve is hinged to the first support rod through the third hinge.

4. The friction plate device for a wire rope brake according to claim 3, characterized in that: The second telescopic sleeve includes a second telescopic rod and a second telescopic sleeve slidingly sleeved outside the second telescopic rod. The second telescopic rod is connected to the active friction plate through the second hinge, and the second telescopic sleeve is hinged to the second support rod through the third hinge.

5. The friction plate device for a wire rope brake according to claim 1, characterized in that: The point A and the point B are located in the same plane as the center of gravity of the active friction plate, and the vertical center axis of the active friction plate coincides with a straight line passing through the point A and the point B.

6. The friction plate device for a wire rope brake according to claim 1, characterized in that: The center point of the third hinge shaft of the third hinge is located below the center of gravity of the active friction plate.

7. The friction plate device for a wire rope brake according to claim 1, characterized in that: The active friction plate is provided with accommodating grooves arranged in parallel for accommodating the first hinge and the second hinge.

8. The friction plate device for a wire rope brake according to claim 7, characterized in that: The front plate is provided with a guide groove corresponding to the accommodating groove for accommodating the first telescopic sleeve rod and the second telescopic sleeve rod.

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