Band-type brake micro-motion distance detection device and elevator band-type brake

Abstract

The invention relates to the field of elevator band-type brakes, in particular to a band-type brake micro-motion distance detection device and an elevator band-type brake. According to the first aspect of the invention, the band-type brake micro-motion distance detection device comprises a measuring assembly and a triggering assembly which can move relatively; the measuring assembly comprises an elastic deformation part, and when the distance between the trigger assembly and the measuring assembly changes, the trigger assembly moves relative to the measuring assembly to enable the elastic deformation part to deform; and the measuring part is used for measuring the deformation of the elastic deformation part. The micro motion can be detected by measuring the deformation of the elastic deformation part. Compared with a traditional micro-motion distance detection device, the micro-motion distance detection device is lower in required installation precision and longer in service life.

Description

Technical Field

[0001] The present invention relates to the field of elevators, and in particular to a brake micro-motion distance detection device and an elevator brake. Background Art

[0002] Elevator brake systems require a safety confirmation device to detect brake actuation. When the elevator car comes to a complete stop, the brake locks the traction sheave to prevent movement. This safety device detects whether the brake is locked or released. The elevator car door opens only when the safety device confirms the brake has locked the traction sheave, preventing a fall. Furthermore, after the elevator door closes and before operation begins, the elevator operates only when the safety device confirms the brake has released the traction sheave, preventing misoperation. Conventional elevators typically use micro switches as this safety device.

[0003] Because the distance between the two brake modules of an elevator brake varies slightly—typically, the spacing is 0.6mm to 0.9mm—using micro switches as safety devices requires high installation precision. Furthermore, due to inherent limitations of micro switches, they typically have a short service life and require frequent replacement. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The present application proposes a brake inching distance detection device and an elevator system, the purpose of which is to provide a brake inching distance detection device for replacing a traditional micro switch.

[0006] According to the first aspect of the present application, a brake micro-motion distance detection device is proposed, comprising: a relatively movable measuring component and a trigger component; the measuring component comprising: an elastic deformation portion, wherein when the distance between the trigger component and the measuring component changes, the movement of the trigger component relative to the measuring component causes the elastic deformation portion to deform; and a measuring portion, wherein the measuring portion is used to measure the deformation of the elastic deformation portion. The brake micro-motion distance detection device according to the first aspect of the present application is capable of detecting micro-motion by measuring the deformation of the elastic deformation portion. Compared with traditional micro-motion distance detection devices, it requires lower installation precision and has a longer service life.

[0007] In some embodiments, the brake micro-motion distance detection device also includes a force transmission part, one end of the force transmission part contacts the trigger component, and the other end contacts the elastic deformation part. When the relative distance between the trigger component and the measuring component decreases, the trigger component drives the force transmission part to deform the elastic deformation part. When the relative distance between the trigger component and the measuring component increases, the elastic deformation part applies force to the force transmission part to restore the force transmission part to its original position.

[0008] In some embodiments, the elastic deformation portion includes a curved base plate and a spring, the curved base plate is connected to the spring, and when the relative distance between the trigger assembly and the measuring assembly decreases, the curved base plate is deformed, and the deformation of the elastic deformation portion compresses the spring.

[0009] In some embodiments, the measuring portion is attached to the curved base plate.

[0010] In some embodiments, the spring is disposed opposite to the other end of the force transmission portion across one end of the curved bottom plate.

[0011] In some embodiments, the other end of the curved base plate is fixed in the housing of the measuring assembly, and the measuring portion is attached to a portion between one end and the other end of the curved base plate.

[0012] In some embodiments, the measuring component also includes a limiting portion, and the force transmission component has a locking portion, and the limiting portion can lock the locking portion to limit the movement of the force transmission component in a first direction, and the first direction represents the movement direction when the measuring component and the trigger component produce relative movement.

[0013] In some embodiments, the limiting portion is a receiving cavity provided inside the measuring component, the locking portion is a protrusion provided on the force transmission portion, and the receiving cavity accommodates the protrusion; the protrusion extends along any direction that is not parallel to the first direction.

[0014] In some embodiments, the trigger assembly contacts the elastic deformation portion. When the relative distance between the trigger assembly and the measuring assembly decreases, the trigger assembly drives the elastic deformation portion to deform. When the relative distance between the trigger assembly and the measuring assembly increases, the elastic deformation portion applies force to the trigger assembly to restore the trigger assembly to its original position.

[0015] In addition, according to the second aspect of the present application, an elevator brake is proposed, comprising: a brake micro-motion distance detection device, and two relatively movable brake parts, wherein the brake micro-motion distance detection device is the brake micro-motion distance detection device described in any one of the above items, the trigger component is arranged on any one of the two brake parts, and the measuring component is arranged on the other of the two brake parts.

[0016] It can be understood that the beneficial effects of the above-mentioned second aspect compared with the relevant technology are the same as the beneficial effects of the above-mentioned first aspect compared with the relevant technology. Please refer to the relevant description in the above-mentioned first aspect and will not be repeated here.

[0017] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of an exemplary elevator brake.

[0019] Figure 2 FIG. 1 is a schematic diagram of an exemplary prior art brake micro-motion distance detection device.

[0020] Figure 3 It is a three-dimensional diagram of the brake micro-motion distance detection device according to an embodiment of the present application.

[0021] Figure 4 It is a bottom view of the brake micro-motion distance detection device according to an embodiment of the present application.

[0022] Figure 5 It is a side view of the brake micro-motion distance detection device according to an embodiment of the present application.

[0023] Figure 6 It is along Figure 5 Cross-sectional view along line AA.

[0024] Figure 7 yes Figure 6 A partial enlarged view of point F in the middle.

[0025] Figure 8 yes Figure 6 Schematic diagram of the change in the distance between the two brakes in the cross-sectional view.

[0026] Figure markings: 1: brake micro-distance detection device, 10: first brake, 11: first brake body, 12: gate spring, 13: electromagnet, 20: second brake, 21: second brake body, 22: brake shoe, 23: brake body connecting part, 30: micro switch, 31: switch trigger part, 32: switch contact, 40: traction wheel, 100: measuring component, 110: measuring component housing, 120: spring, 130: plate-shaped component, 140: pressure block, 150: force transmission part holding part, 151: limiting part, 200: trigger component, 211: fixing part, 212: rising part, 220: through hole, 230: connecting rod, 231: contact, 241: first adjusting nut, 242: second adjusting nut, 300: force transmission part, 310: protrusion. DETAILED DESCRIPTION

[0027] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known connection methods, components, parts, assembly methods, etc. are omitted to avoid unnecessary details that obscure the description of the embodiments of the present application.

[0028] It should be noted that although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the flowcharts. The terms "first," "second," and the like in the specification, claims, and drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] It should be noted that directions appearing in this specification and the accompanying drawings, such as "first direction," "left," "right," "front," "back," "upper," and "lower," are intended for illustration purposes only and are not intended to limit actual directions. Persons skilled in the art may adjust the directions accordingly based on actual circumstances.

[0030] In the drawings of this specification, the hatched (diagonal) parts are to illustrate that they are cross-sections and do not necessarily mean that they are made of specific materials. In some drawings, in order to distinguish different parts, some parts that are not cross-sections are also marked with hatching (diagonal).

[0031] In addition, the mirror transformation and the like of the present application can also achieve the same effect as the device in the embodiment of the present application.

[0032] Figure 1 A schematic diagram of an exemplary elevator holding brake is shown.

[0033] The traction sheave 40 is connected to a traction motor (not shown), which is connected to a guide rail or other traction mechanism, so that the traction motor can drive the traction sheave 40 to move the elevator car, thereby realizing the basic functions of the elevator. Specifically, the brake body connecting portion 23 passes over the brake shoe 22 to connect the first brake body 11 and the second brake body 21, and the second brake body 21 is connected to the traction sheave 40. When the elevator stops, the brake loses power, and the gate spring 12 stretches to increase the distance between the first brake body 11 and the brake shoe 22, and then the brake body connecting portion 23 drives the second brake body 21, so that the traction sheave 40 approaches the brake shoe 22, and finally the brake shoe 22 presses the traction sheave 40 to achieve the braking effect; conversely, when the elevator is operating, the brake is energized, so that the electromagnet 13 generates an electromagnetic force to overcome the tension of the gate spring 12, so that the distance between the first brake body 11 and the brake shoe 22 is reduced, and then the brake body connecting portion 23 drives the second brake body 21, so that the traction sheave 40 is away from the brake shoe 22, and finally the brake shoe 22 is separated from the traction sheave 40, and the braking ends.

[0034] Figure 2 A schematic diagram of an exemplary prior art brake inching distance detection device is shown, wherein the brake inching distance detection device is, for example, a micro switch 30 .

[0035] The microswitch 30 is partially mounted on the first holding brake 10 and partially mounted on the second holding brake 20. When the holding brakes are locked and the distance between the first and second holding brakes 10 and 20 decreases, the switch contact 32 presses the switch trigger portion 33, triggering the microswitch 30. Circuitry internal or external to the microswitch 30 can receive the trigger signal generated by the switch trigger portion 33. When the distance between the switch contact 32 and the switch trigger portion 33 is appropriately set, the issuance of the trigger signal can be interpreted as indicating that the brake shoe 22 has locked the traction sheave 40, thereby providing a safety confirmation.

[0036] As can be seen from the above description, since the switch contact 22 and the switch trigger part 23 need to be installed at a just appropriate distance, the installation difficulty is increased. In addition, the micro switch 30 itself is designed to have a limited number of triggers. When the number of triggers is too many, circuit aging or structural failure will inevitably occur, resulting in failure to trigger correctly.

[0037] In order to replace the above-mentioned micro switch 30, this application proposes a brake micro-distance detection device. As an alternative product, an infrared macro sensor was considered, but the light-emitting IC in the infrared macro sensor has individual differences and needs to be calibrated before installation. It is also easily affected by ambient light, resulting in inaccurate detection. As an alternative product, an electromagnetic macro sensor was considered, but the strong magnetic field around the elevator brake and traction motor causes electromagnetic interference, which can lead to large measurement errors. As an alternative product, an eddy current displacement sensor was considered, but the strong magnetic field around the elevator brake and traction motor causes electromagnetic interference, which can lead to large measurement errors. As an alternative product, a rotary encoder was considered, but a rotary encoder requires a special mechanical structure to convert the brake displacement into rotation, thus requiring the existing brake mechanical structure to be redesigned, which is costly.

[0038] Therefore, in order to overcome the shortcomings of traditional micro switches and other alternative sensors, the following Figure 3 The brake inching distance detection device shown.

[0039] Figure 3 It is a three-dimensional diagram of the brake micro-motion distance detection device according to an embodiment of the present application. Figure 4 It is a bottom view of the brake micro-motion distance detection device according to an embodiment of the present application.

[0040] exist Figure 3 In the embodiment of FIG, a brake micro-motion distance detection device 1 is shown, which is composed of a measuring component 100 and a trigger component 200. One of the measuring component 100 and the trigger component 200 can be installed on either the first brake 10 or the second brake 20, while the other is installed on the other of the first brake 10 and the second brake 20, thereby replacing the function of the micro switch 30. It should be noted that although Figure 1 FIG. 3 shows that the micro switches 30 are installed above the first brake 10 and the second brake 20 in the figure. The function can be realized when only one micro switch is installed on the first brake 10 and the other is installed on the second brake 20.

[0041] Combine Figure 4The measuring assembly 100 includes a plate-shaped component 130 (elastically deformable portion), a measuring portion (not shown), and a measuring assembly housing 110. The trigger assembly 200 includes a connecting rod 230. The plate-shaped component 130 and the measuring portion are housed in a cavity formed within the measuring assembly housing 110, with one end of the plate-shaped component 130 retained by the measuring assembly housing 110. The measuring assembly 100 and the trigger assembly 200 are positioned opposite each other, and the measuring assembly housing 110 has a through hole extending from the surface of the measuring assembly housing 110 to the internal cavity. The connecting rod 230 passes through the through hole in the measuring assembly housing 110 and contacts the other end of the plate-shaped component 130. When the relative distance between the measuring assembly 100 and the trigger assembly 200 decreases, the connecting rod 230 pushes the plate-shaped component 130, causing it to deform. The measuring assembly can detect the deformation of the plate-shaped component 130 to determine the distance that the connecting rod 300 has pushed one end of the plate-shaped component 130. The relationship between the deformation of the plate-like component 130 and the distance it is pushed is predetermined. Because the stress magnitude is nearly identical when the same material undergoes the same elastic deformation, it is expected that even different batches of plate-like components 130 will produce relatively consistent results. As the relative distance between the measuring assembly 100 and the trigger assembly 200 increases, the pressure on the plate-like component 130 disappears, causing it to rebound and return to its original shape.

[0042] The measuring part is, for example, a strain measuring device such as a strain gauge, a small stress tester, or a photoelectric stress tester, which measures the deformation of the plate-like component 130 by measuring stress (or deformation). Considering the cost and miniaturization requirements, a strain gauge attached to the plate-like component 130 can be used. Specifically, for example, a strain gauge composed of a conductor sensitive grid that measures strain by resistance change, or a piezoelectric ceramic strain gauge, etc. The above-mentioned strain gauge should be installed in a form that can bend together when the plate-like component 130 is bent by force, for example, it should be attached to the surface of the plate-like component 130. However, in some embodiments, the measuring part can also be set inside the plate-like component 130.

[0043] It should be noted that when the measuring unit is not a strain gauge, it should be installed at a corresponding position on the measuring assembly 100 according to its type, rather than being attached to the plate-shaped component 130. For example, when using photoelectric means to measure deformation (stress), the measuring unit can be installed at a position on the measuring assembly housing 110 opposite the plate-shaped component 130.

[0044] With the brake micro-motion distance detection device of the above embodiment, the relative distance between the measuring component 100 and the trigger component 200 is measured by measuring the deformation of the plate-shaped component 130 . Therefore, the installation accuracy requirement is lower than that of the prior art using a micro switch, and the service life is increased.

[0045] In the above embodiment, it is described that the trigger assembly 200 directly contacts the plate-shaped component 130 of the measuring assembly 100 through the connecting rod 230, but it can also be as follows. Figure 4 As in the embodiment of FIG. 1 , an additional force transmission portion 300 is provided. Figure 5 It is a side view of the brake micro-motion distance detection device according to an embodiment of the present application. Figure 6 It is along Figure 4 Cross-sectional view along line AA. Figure 8 It is along Figure 6 Schematic diagram of the change in the distance between the two brakes in the cross-sectional view. Figure 4-6 , 8 for further explanation.

[0046] A portion of the force transmission part 300 is surrounded by the measurement component housing 110 and is held by the measurement component housing 110 in multiple directions. Figure 8 The force transmission unit 300 can move in the left-right direction while being held in the other directions by the measurement assembly housing 110. One end of the force transmission unit 300 contacts the contact 231 of the connecting rod 230, and the other end contacts the plate-like component 130. Therefore, when the relative distance between the measurement assembly 100 and the trigger assembly 200 decreases, the contact 231 pushes the force transmission unit 300 rightward (in the left-right direction), causing the plate-like component 130 to deform. When the relative distance between the measurement assembly 100 and the trigger assembly 200 increases, the force exerted on the force transmission unit 300 by the contact 231 disappears, and the plate-like component 130 rebounds, causing the force transmission unit 300 to return to its original position.

[0047] In the embodiment in which the connecting rod 230 directly contacts the plate-like component 130, the connecting rod needs to be extended into the measuring component 100 and fixed on site during installation. In comparison, the setting of the force transmission part 300 allows the brake micro-motion distance detection device 1 to be installed only after the positioning of the measuring component 100 and the trigger component 200, thereby reducing the difficulty of on-site installation.

[0048] It should be noted that, in some embodiments, the force transmission part 300 may also be connected to the plate-shaped component 130 to improve the stability of the system, but such embodiments will increase the wear of the force transmission part and reduce its service life.

[0049] Figure 7 yes Figure 6 A partial enlarged view of point F in the middle. Figure 6-8 The force transmission portion 300 will be further described.

[0050] Contact 231 is integrally formed with connecting rod 230 or connected to connecting rod 230 by some known means. It is a protrusion formed on the end of connecting rod 230 that is closest to measuring assembly 100. When trigger assembly 200 comes too close to measuring assembly 100, contact 231 is blocked by measuring assembly housing 110, preventing damage to plate-like member 130.

[0051] exist Figure 7 Figure 1 shows a force transmission unit retaining portion 150 for retaining the force transmission unit 300. The force transmission unit retaining portion 150 is part of the measurement assembly housing 110 and contains a cavity for accommodating the force transmission unit 300. In some embodiments, the force transmission unit retaining portion 150 can be made stronger than the rest of the measurement assembly housing 110. To facilitate assembly, the force transmission unit retaining portion 150 is not integrally formed with the rest of the measurement assembly housing 110. The force transmission unit retaining portion 150 can limit the travel of the contact 231. The force transmission unit retaining portion 150 also has a stopper 151, which is a larger accommodating cavity than the rest of the cavity within the force transmission unit retaining portion 150. The force transmission unit 300 also has a protrusion 310. When the force transmission unit 300 is installed in the force transmission unit retaining portion 150, the position of the protrusion 310 corresponds to the position of the stopper 151. The length of the stopper 151 in the left-right direction is greater than the length of the protrusion 310 in the left-right direction. Therefore, when the relative positions of the measurement assembly 100 and the trigger assembly 200 change, the protrusion 310 can move in the left-right direction (first direction) within the stopper 151. Furthermore, the stopper 151 limits the maximum movement of the force transmission component 300 in the left-right direction, thereby preventing damage to the measurement assembly 100.

[0052] According to the above embodiment, the force transmission part 300 is mounted on the measurement assembly 100 while being movable in the left-right direction and will not slide out of the measurement assembly 100 , thereby increasing the convenience of installation.

[0053] Although the above embodiment describes the position-limiting portion 151 as a receiving cavity, the position-limiting portion 151 can also be another structure that cooperates with the protrusion 310 (the retaining portion) to provide a retaining position. The specific structure is not limited. However, the receiving cavity-protrusion structure described in the above embodiment is simple to manufacture and relatively low in cost.

[0054] Because parts are subjected to alternating loads, even if the stress is below the material's elastic limit, cracks or sudden fractures may still occur after prolonged operation. This fracture phenomenon is called fatigue fracture. The ability of a material to withstand alternating loads without failure is called fatigue strength. To extend the service life of the measurement assembly 100, the plate-like component 130 should be able to withstand a large number of cyclic loading cycles without fatigue fracture, exemplified by 5 million cycles.

[0055] In some embodiments, the plate-shaped component 130 may be made of a specific material to increase the fatigue resistance of the plate-shaped component 130 .

[0056] In some embodiments, the measuring assembly 100 is further provided with a spring 120, which is arranged on the measuring assembly housing 110 through a fixing seat, and one end of the spring 120 contacts the other surface of the plate-shaped component 130, which is located on the opposite side of the surface of the plate-shaped component 130 that contacts the force transmission component 300. When the plate-shaped component 130 is compressed and deformed by the force transmission component 300, Figure 8 As shown, spring 120 contracts under force. Spring 120 increases the plate-like component 130's resistance to bending fatigue, thereby extending its service life. Conversely, when the distance between measurement assembly 100 and trigger assembly 200 increases, spring 120 assists plate-like component 130 in restoring its original position and pushes force transmission component 300 back to its original position.

[0057] In this way, the spring can prevent the plate-shaped member 130 from being excessively deformed when the plate-shaped member 130 is compressed, and provide assistance when the plate-shaped member 130 is restored, thereby increasing the fatigue resistance of the plate-shaped member 130 .

[0058] In addition, the provision of the spring 120 also enables the measuring component 100 to select different strain capacities according to different usage environments. For usage environments that pursue service life, a spring 120 with strong elasticity can be selected, and for usage environments that pursue measurement sensitivity, a spring 120 with weak elasticity can be selected.

[0059] In addition, Figure 6 、 8 As shown, the measuring assembly further includes a spring retaining portion 111, into which a spring 120 is nested. One end of the spring 120 contacts the measuring assembly housing, while the other end contacts the plate-shaped member 130, thereby securing the spring 120 in the left-right direction. The spring retaining portion 11 prevents movement of the spring 120 in directions other than the left-right direction, thereby ensuring that the spring 120 does not become misaligned.

[0060] It should be noted that although the spring 120 is provided in the measuring assembly 100 in the above embodiment, the spring 120 can be omitted. Instead, an elastic plate-shaped member 130 can be selected, such as a leaf spring. However, it should be noted that even if the spring 120 is provided, the plate-shaped member 130 should still have elastic force.

[0061] In order to prevent the plate-like component 130 from shifting, the measuring assembly 100 also has a pressure block 140, which is arranged at the front end of the plate-like component 130 (the end away from the force transmission component 300). Its function is to fix the plate-like component 130 so that the plate-like component 130 can produce the same deformation when subjected to the same pressure.

[0062] The trigger assembly 200 also includes a first adjustment nut 241 and a second adjustment nut 242. The first adjustment nut 241 and the second adjustment nut 242 can adjust the position of the connecting rod 230 fixed to the trigger assembly 200, thereby adjusting the distance between the contact 231 and the measuring assembly 100, further reducing the required accuracy when installing the measuring assembly 100 and the trigger assembly 200. The trigger assembly 200 can also be adaptively provided with a device for adjusting the position of the connecting rod 230, which is not further limited here.

[0063] In some embodiments, the measuring unit is connected to a conversion circuit so that the analog signal generated by the measuring unit can be converted into a digital signal (or the measuring unit itself can output a digital signal). It is easy to understand that the deformation of the plate-like component 130 is a process from small to large. For a larger force, the plate-like component 130 produces a larger deformation variable, and for a smaller force, the plate-like component 130 produces a smaller deformation variable. Therefore, unlike the micro switch, the brake micro-motion distance detection device 1 of the embodiment of the present application can record the deformation variable of each deformation. Therefore, during installation, the installer can judge whether the installation position is accurate by the size of the deformation variable when the brake is working, thereby improving the installation accuracy and further improving the convenience of installation.

[0064] Furthermore, when the brake shoe 22 becomes smaller due to wear, the force applied by the force transmission assembly 300 to the plate-shaped component 130 will increase, so the wear degree of the brake shoe 22 can be detected by the deformation amount.

[0065] In addition, although the plate-shaped component 130 has been discussed as the elastic deformation part in the above embodiments, elastic deformation parts of other shapes can also achieve corresponding beneficial effects. The reason for selecting the plate-shaped component 130 is that a wider plate-shaped component can better measure deformation (stress).

[0066] In addition, in some embodiments, the trigger assembly 200 further has a spare through hole 220, in which the connecting rod 230 can also be installed.

[0067] According to the above-mentioned embodiments, the brake inching distance detection device 1 of the present application has the following beneficial effects.

[0068] (1) The elastic deformation portion is compressed and bent by the cantilever beam principle, and the deformation of the elastic deformation portion is measured by the measuring unit to detect the brake inching distance. A brake inching distance detection device is provided that replaces the micro switch. Because the elastic deformation detection method is used, the installation accuracy requirements are reduced.

[0069] (2) By setting up the measuring component, trigger component, and force transmission part, it is only necessary to fix the measuring component and trigger component at a specific position during on-site installation. There is no need to debug the position of detection components such as the force transmission part and the elastic deformation part, which makes installation simple.

[0070] (3) Through the analog-to-digital conversion of the measuring unit, the brake inching distance can be accurately obtained, which can improve the convenience during installation and debugging on the one hand, and detect brake failure on the other hand.

[0071] (4) By providing a spring opposite to the force transmission portion across the elastic deformation portion, the fatigue resistance of the elastic deformation portion can be improved, thereby increasing the service life.

[0072] (5) Deformation is detected by strain gauges. Compared with micro switches, the structure of strain gauges themselves makes them have a longer service life.

[0073] (6) The structure is simple and the cost is lower than other conceivable alternatives.

[0074] (7) The detection is not affected by magnetic fields and is suitable for use in elevator brake scenarios.

[0075] Furthermore, in an embodiment of the present application, an elevator brake is proposed, comprising: a brake micro-motion distance detection device, and two relatively movable brake parts. The above-mentioned brake micro-motion distance detection device is the brake micro-motion distance detection device described in any one of the above-mentioned embodiments, the trigger component is arranged on any one of the two brake parts, and the measuring component is arranged on the other of the two brake parts.

[0076] In addition, the brake micro-motion distance detection device in each of the drawings of the embodiments of the present application can also be mirrored to achieve the same beneficial effect. The difference is that the structure of the brake micro-motion distance detection device in each of the drawings of the present application is applicable to the brake on the right side of the elevator (seen from the front of the elevator), while the mirror structure is applicable to the brake on the left side. This type of mirror structure does not exceed the scope of this specification.

[0077] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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.

[0078] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A brake inching distance detection device, characterized in that: include: Relatively movable measuring component and triggering component; The measurement component includes: an elastic deformation portion, wherein when the distance between the trigger component and the measuring component changes, the movement of the trigger component relative to the measuring component causes the elastic deformation portion to deform; A measuring portion is used to measure the deformation of the elastic deformation portion.

2. The brake micro-motion distance detection device according to claim 1, characterized in that: The brake micro-motion distance detection device further includes a force transmission part, one end of which contacts the trigger assembly, and the other end of which contacts the elastic deformation part. When the relative distance between the trigger assembly and the measuring assembly decreases, the trigger assembly drives the force transmission part to deform the elastic deformation part. When the relative distance between the trigger component and the measuring component increases, the elastic deformation portion applies force to the force transmission portion to restore the force transmission portion to its original position.

3. The brake micro-motion distance detection device according to claim 2, characterized in that: The elastic deformation portion includes a curved bottom plate and a spring, wherein the curved bottom plate is connected to the spring. When the relative distance between the trigger assembly and the measuring assembly decreases, the curved bottom plate is deformed, and the deformation of the elastic deformation portion compresses the spring.

4. The brake inching distance detection device according to claim 3, characterized in that: The measuring part is attached to the curved bottom plate.

5. The brake micro-motion distance detection device according to claim 4, characterized in that: The spring is disposed opposite to the other end of the force transmission portion with one end portion of the curved bottom plate interposed therebetween.

6. The brake micro-motion distance detection device according to claim 5, characterized in that: The other end of the curved base plate is fixed in the housing of the measuring assembly, and the measuring part is attached to a portion between the one end and the other end of the curved base plate.

7. The brake inching distance detection device according to claim 3, characterized in that: The measuring component also includes a limiting portion, and the force transmission component has a locking portion. The limiting portion can lock the locking portion to limit the movement of the force transmission component in a first direction, and the first direction represents the movement direction when the measuring component and the trigger component produce relative movement.

8. The brake inching distance detection device according to claim 7, characterized in that: The limiting portion is an accommodating cavity provided inside the measuring component, the locking portion is a protrusion provided on the force transmitting portion, and the accommodating cavity accommodates the protrusion; the protrusion extends along any direction that is not parallel to the first direction.

9. The brake micro-motion distance detection device according to claim 1, characterized in that: The trigger assembly contacts the elastic deformation portion, When the relative distance between the trigger component and the measuring component decreases, the trigger component drives the elastic deformation part to deform. When the relative distance between the trigger assembly and the measuring assembly increases, the elastic deformation portion applies force to the trigger assembly to restore the trigger assembly to its original position.

10. An elevator brake, comprising: The brake inching distance detection device and the two relatively movable brake parts are characterized in that: The brake inching distance detection device is the brake inching distance detection device according to any one of claims 1 to 9, The trigger assembly is provided on either of the two brake parts. The measuring component is arranged on the other of the two holding brake parts.

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