Elevator brake device and elevator system

Abstract

The invention discloses an elevator braking device and an elevator system. The elevator braking device comprises a first support and a second support, wherein the first support is provided with a first containing area, is provided with a guiding piece and is fixedly installed relative to an elevator driving device; the second support is provided with a second containing area, the second support is arranged to be capable of moving relative to the first support along the guide part, the second containing area and the first containing area intersect to form a common area, and the volume of the common area changes along with the movement of the second support; the control part is arranged in the common area and is connected with the second support, and the first friction piece is arranged adjacent to the control part and can move relative to the second support along the guide piece under the control of the first friction piece; the first friction piece makes contact with a brake disc of the elevator driving device to conduct braking operation in the first working state of the elevator braking device, and makes contact with the brake disc in the second working state of the elevator braking device disengaged from the brake disc.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more specifically, to an elevator braking device and an elevator system. Background Art

[0002] Various elevator systems such as lifts, escalators, and moving walks have been widely used in many places, which can bring great convenience to people's work, production, travel, etc. In an elevator system, an elevator braking device is provided to ensure the safe operation of elevator equipment. For existing elevator equipment, they generally are configured with two typical elevator braking devices, namely a block brake and a caliper disc brake. Usually, the block brake has the characteristics of a relatively small size, a simple structure, a relatively small braking torque, and using a single braking surface, and it is mainly applied to occasions where the building height is relatively low and the requirements for power demand and cost investment are not large; for the caliper disc brake, due to the characteristics of relatively high manufacturing and usage costs, a relatively complex structure, a relatively large braking torque, using two braking surfaces, and good working performance, it is mostly applied in environments such as buildings with a relatively high height and higher safety requirements. Summary of the Invention

[0003] In view of this, the present invention provides an elevator braking device and an elevator system, thereby solving or at least alleviating one or more of the above problems and other problems existing in the prior art, or providing an alternative technical solution to the prior art.

[0004] First, according to one aspect of the present invention, there is provided an elevator braking device, which includes:

[0005] A first bracket having a first accommodation area, which is provided with a guide member and is fixedly installed relative to the elevator drive device;

[0006] A second bracket having a second accommodation area, which is arranged to be movable relative to the first bracket along the guide member, wherein the second accommodation area intersects with the first accommodation area to form a common area, and the volume of the common area changes with the movement of the second bracket; and

[0007] A control unit and a first friction member, the control unit is arranged in the common area and is connected to the second bracket, and the first friction member is arranged adjacent to the control unit and can move relative to the second bracket along the guide member under its control, so that the first friction member contacts the brake disc of the elevator drive device in the first working state of the elevator braking device to perform a braking operation, and is disengaged from the brake disc in the second working state.

[0008] In the elevator braking device according to the present invention, optionally, the elevator braking device further includes a second friction member, which is disposed in the second accommodation area and connected to the second bracket. The first friction member and the second friction member are respectively in contact with the first side and the second side of the brake disc opposite thereto in the first working state for braking operation, and are respectively disengaged from contact with the first side and the second side in the second working state.

[0009] In the elevator braking device according to the present invention, optionally, the second friction member is detachably connected to the second bracket, and / or the friction portions of the first friction member in contact with the first side and the second friction member in contact with the second side are symmetrically arranged with respect to the brake disc, and / or the first friction member and / or the second friction member are configured as a block structure.

[0010] In the elevator braking device according to the present invention, optionally, the control unit includes a fixing member, an electromagnetic member, and a force-providing member. The fixing member is connected to the second bracket, the electromagnetic member and the force-providing member are installed on the fixing member, and the first friction member is movably arranged between the fixing member and the brake disc along the guiding member. In the first working state, the force-providing member provides a force to the first friction member to move it towards the brake disc, so that the first friction member contacts the brake disc. In the second working state, the electromagnetic member provides an electromagnetic force to overcome the force and move the first friction member towards the fixing member, so that the first friction member is disengaged from contact with the brake disc.

[0011] In the elevator braking device according to the present invention, optionally, the fixing member is detachably connected to the second bracket, the electromagnetic member includes one or more electromagnetic coils, the force-providing member includes one or more elastic members, and the elastic member includes a spring.

[0012] In the elevator braking device according to the present invention, optionally, the fixing member and / or the first friction member are configured as a block structure.

[0013] In the elevator braking device according to the present invention, optionally, the elevator braking device further includes an adjusting member, which is connected to the second bracket and provided with an operating portion for moving the second bracket along the guiding member relative to the first bracket by operating the operating portion, so as to define the holding distance between the second bracket and the first bracket in the second working state.

[0014] In the elevator braking device according to the present invention, optionally, the adjusting member includes a rod member and an elastic member. One end of the rod member extends through the side wall of the first bracket into the first accommodating area and is connected to the second bracket. The operating portion is provided at the other end of the rod member and is located outside the first bracket. The elastic member is sleeved on the rod member and is pressed between the first bracket and the second bracket. The elastic member includes a spring.

[0015] In the elevator braking device according to the present invention, optionally, the guiding member includes one or more first guiding members and one or more second guiding members. The first guiding member is arranged to extend through the first accommodating area and the second accommodating area. The second guiding member is arranged in parallel with the first guiding member and extends through the first accommodating area.

[0016] In the elevator braking device according to the present invention, optionally, the first guiding member and the second guiding member are configured as rod-shaped. Through holes for the first guiding member and the second guiding member to pass through correspondingly are provided on the first bracket, the second bracket, the control portion, and the first friction member respectively. And limiting portions are provided on the first guiding member and the second guiding member to limit their respective displacements with respect to the first bracket or the second bracket.

[0017] In the elevator braking device according to the present invention, optionally, a bushing is provided between the first guiding member and the first bracket and / or the second bracket and / or the control portion and / or the first friction member, and / or a bushing is provided between the second guiding member and the first bracket and / or the second bracket and / or the control portion and / or the first friction member.

[0018] In the elevator braking device according to the present invention, optionally, the first bracket and the second bracket are configured as substantially U-shaped. The second bracket is arranged in an inverted manner with respect to the first bracket, and its first side portion is placed in the first accommodating area, and the second side portion opposite to the first side portion is placed outside the first bracket, and the second side portion is arranged adjacent to the brake disc.

[0019] In the elevator braking device according to the present invention, optionally, an opening is provided on the side portion of the first bracket facing the brake disc. The friction portion of the first friction member enters and exits the common area through the opening when moving along the guiding member.

[0020] Secondly, according to another aspect of the present invention, an elevator system is further provided, which includes:

[0021] An elevator driving device, which is configured to provide power to drive the elevator system to operate. The elevator driving device has a brake disc; and

[0022] The elevator braking device according to any one of the above, which is arranged adjacent to the brake disc and configured to operate by contacting or disengaging from the brake disc, so as to prevent the elevator driving device from supplying power to the elevator system in the first working state and allow the elevator driving device to supply power to the elevator system in the second working state.

[0023] In the elevator system according to the present invention, wherein the elevator driving device includes a traction machine and a hoist, and the first bracket of the elevator braking device is mounted on the housing of the elevator driving device.

[0024] The overall structure of this elevator braking device is compact, with low cost and is easy to manufacture, install and maintain. Moreover, it has a large braking torque and outstanding working performance, and can combine the respective advantages of block brakes and disc brakes. This elevator braking device has outstanding practicality and a wide range of applications. It can be configured for use in elevator systems of low-rise, mid-rise or high-rise buildings, and can provide reliable guarantee for the safe operation of elevators. This elevator braking device can be installed and applied to various elevator systems such as lifts, escalators and moving walks. Description of the Drawings

[0025] The technical solution of the present invention will be further described in detail below in conjunction with the drawings and embodiments. However, it should be understood that these drawings are only designed for explanatory purposes and are only intended to conceptually illustrate the structural configuration described herein, and are not necessarily drawn to scale.

[0026] Figure 1 is a perspective structural schematic diagram of an elevator system example that can adopt various embodiments of the present invention.

[0027] Figure 2 is a perspective structural schematic diagram of an embodiment of an elevator braking device according to the present invention.

[0028] Figure 3 is Figure 2 a side view structural schematic diagram of the shown embodiment of the elevator braking device.

[0029] Figures 4 to 11 are respectively Figure 2 perspective structural schematic diagrams of the first bracket, the second bracket, the control part, the first friction member, the second friction member, the first guide member, the snap ring and the adjusting member in the shown embodiment of the elevator braking device.

[0030] Figures 12 to 14 shows Figure 2 a schematic diagram of the change process of the shown embodiment of the elevator braking device from the non-braking working state to the braking working state. The brake disc located in the elevator driving device of the elevator system example is also shown in the figure. Detailed implementation manner

[0031] Figure 1 is a perspective view of an elevator system 101, which includes an elevator car 103, a counterweight 105, a tension member 107, a guide rail (or track system) 109, a machine unit (or machine unit system) 111, a position reference system 113, and an electronic elevator controller (controller) 115. The elevator car 103 and the counterweight 105 are connected to each other by a tension member 107. The tension member 107 can include or be configured as, for example, ropes, steel cables, and / or coated steel strips, etc. The counterweight 105 can be configured to balance the load of the elevator car 103, and can be configured to assist the elevator car 103 in moving in the elevator shaft (or hoistway) 117 and along the guide rail 109 in the opposite direction and simultaneously relative to the counterweight 105.

[0032] The tension member 107 engages the machine unit 111, and the machine unit 111 is a part of the overhead structure of the elevator system 101. The machine unit 111 can be configured to control the movement between the elevator car 103 and the counterweight 105. The position reference system 113 can be installed on a fixed part at the top of the elevator shaft 117, such as on a support or a guide rail, and can be configured to provide position signals related to the position of the elevator car 103 in the elevator shaft 117. In other embodiments, the position reference system 113 can be directly installed on the moving component of the machine unit 111, or can be located in other positions and / or configurations known in the art. The position reference system 113 can be any device or mechanism known in the art for monitoring the position of the elevator car and / or the counterweight. For example but not limited to, the position reference system 113 can be an encoder, a sensor, or other systems, and can include speed sensing, absolute position sensing, etc., as will be understood by those skilled in the art.

[0033] As Figure 1 shown, the controller 115 can be located in the controller room 121 of the elevator shaft 117, and can be configured to control the operation of the elevator system 101 (and particularly the elevator car 103). For example, the controller 115 can provide drive signals to the machine unit 111 to control the acceleration, deceleration, leveling, stopping, etc. of the elevator car 103. The controller 115 can also be configured to receive position signals from the position reference system 113 or any other desired position reference device. When moving up or down along the guide rail 109 in the elevator shaft 117, the elevator car 103 can stop at one or more landings 125 as controlled by the controller 115. Although the controller 115 is shown in the controller room 121, those skilled in the art will appreciate that the controller 115 can be located and / or configured elsewhere in the elevator system 101. In one embodiment, the controller can be remotely located or in the cloud.

[0034] The machine unit 111 may include a motor or a similar driving device for providing operating power to the elevator system 101. Such elevator driving devices are often referred to as traction machines, hoists, etc. in practical applications. According to an embodiment of the present invention, the machine unit 111 may be configured to include an electric driving motor. The power source for the motor can be any possible power source, such as including the power grid, and the power source can be supplied to the motor in combination with other components. The machine unit 111 may include a traction sheave, and the traction sheave may transmit a force to the tension member 107 to move the elevator car 103 in the elevator shaft 117.

[0035] Although shown and described using a rope winding system including the tension member 107, elevator systems using other methods and mechanisms for moving the elevator car in the elevator shaft may equally apply the embodiments according to the present invention. For example, the embodiments according to the present invention may be adopted in a rope-free elevator system using a linear motor to move the elevator car, and may also be adopted in a rope-free elevator system using a hydraulic lift to move the elevator car, and may also be adopted in a rope-free elevator system using a self-propelled elevator car (for example, an elevator car equipped with a friction wheel, a pinch roller or a traction wheel).

[0036] In addition, the specific elevators and specific components shown and described herein Figure 1 are only non-limiting examples presented for illustrative and explanatory purposes, and it should be recognized that other elevator system configurations may operate together with the elevator braking device disclosed herein. It will become apparent in the subsequent description that the present invention is equally applicable to other types of elevator systems such as escalators and moving walkways. In addition, for the sake of simplifying the drawings, the same or similar components and features may be labeled only at one or several places in the same drawing.

[0037] Figure 2 and Figure 3 schematically illustrates the general construction situation of the assembled elevator braking device 100. The elevator braking device 100 can be installed near the elevator driving device of the machine unit 111. For example, when it is necessary to stop the elevator car 103 in the elevator system 101 at the currently reached target floor, or when an emergency occurs and the elevator needs to be shut down, etc., the elevator braking device 100 can be used to perform a braking operation on the elevator driving device. In Figure 12 such drawings, the brake disc available for performing the braking operation in the elevator driving device has been schematically labeled with the reference numeral 112.

[0038] As used herein, in various embodiments, the elevator brake device 100 can be configured to have a first bracket 10, a second bracket 20, a control unit 30, a first friction member 40 and a second friction member 50. The first bracket 10 and the second bracket 20 can be made of the same or different suitable materials, such as steel, etc., as required, and can be constructed to have a receiving area 11 and a receiving area 21 respectively. The two receiving areas are arranged to form an intersection in the assembled device to define a common area S of them, so that the structural space can be fully utilized, the volume occupied by the device is advantageously reduced, and a compact layout is achieved. Working components such as the control unit 30 and the first friction member 40 can be directly arranged in the common area S for use, avoiding the additional occupation of other space.

[0039] The first bracket 10 can be fixedly installed relative to the elevator drive device, for example, it can be installed on the housing of the elevator drive device or other suitable positions on site. A guide member 60 can be installed on the first bracket 10 to guide and limit the movement path of the second bracket 20, the control unit 30, the first friction member 40 and other components. For example, after the elevator brake device 100 is assembled, the first bracket 10 is installed and fixed on site, and the second bracket 20 can move relative to the first bracket 10 along the guide member 60, so that the relative position between it and the first bracket 10 can be changed, which will cause the volume of the common area S formed by the current intersection of the two brackets to change accordingly, and allow the components arranged therein to perform corresponding operating actions.

[0040] As used herein, in various embodiments, the first bracket 10 and the second bracket 20 may be configured in a generally U-shaped configuration, for example, they may both be conveniently made of U-shaped steel. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in the figures, during assembly, the second bracket 20 can be inverted relative to the first bracket 10, so that one side portion 20a of the second bracket 20 enters the accommodating area 11 of the first bracket 10, and the other side portion 20b thereof is placed outside the first bracket 10, so that the accommodating area 11 of the first bracket 10 and the accommodating area 21 of the second bracket 20 can intersect and overlap in space, thereby forming the above-mentioned common area S, which promotes the realization of an overall compact structure.

[0041] As an example, as used herein, the guide member 60 can be very conveniently configured into a suitable shape such as a rod shape, etc., and one or more can be configured as required. For example, the guide member 60 can be configured to include two guide members 61 with relatively long lengths and two guide members 62 with relatively short lengths. At the same time, a through-hole structure can be provided on components such as the first bracket 10, the second bracket 20, the control unit 30, and the first friction member 40. This has been schematically marked with reference numerals 13, 22, 34, 43 respectively in Figure 4 , Figure 5 and other drawings, so that the guide members 61 and 62 can extend through the first bracket 10 or the second bracket 20 through such through-holes. In Figure 2 and Figure 3 the example, it is specifically shown that the guide member 61 is arranged to extend through the accommodation area 11 of the first bracket 10 and the accommodation area 21 of the second bracket 20, and the guide member 62 is arranged to be parallel to the guide member 61 and extend through the accommodation area 11. With the above arrangement, the first bracket 10 and the second bracket 20 can be quickly and accurately aligned and installed in place, and reliable centering can be ensured for a long time during their operation and the operation of other components, and it is not easy to generate movement deviation to affect the braking performance of the elevator braking device 100.

[0042] It should be noted that for the specific structure, configuration, installation and use, etc. of the guide member 60, the present invention allows design and adjustment according to the actual application requirements. For example, in one or some embodiments, the above-mentioned guide member 61 can be configured as one, two or more, and the same applies to the guide member 62. For another example, in one or some embodiments, the guide member 62 can be removed. For another example, a limiting portion 63 can be provided on the guide member 60 to limit the corresponding displacement between the guide member 60 and the first bracket 10 or the second bracket 20. For example, a concave structure can be constructed at any suitable position (such as the end, the middle position, etc.) on the guide member 60 as the limiting portion 63, and then a mating member 80 such as a snap ring can be installed on the limiting portion 63 to play a position-limiting role. It should be pointed out that the limiting portion 63 can also adopt other forms such as a convex structure, which can be implemented by processes such as machining, casting or welding. The limiting portion 63 can be provided at one or more positions on the guide member 60 as needed, thereby providing more convenience and flexibility for different actual applications and fully adapting to more system configuration scenarios.

[0043] As an alternative, in practical applications, a bushing can be provided between the guide member 61 and one or more components used in conjunction therewith (such as the first bracket 10, the second bracket 20, the control unit 30, the first friction member 40) to enhance wear resistance, promote reduction of noise and vibration effects, improve the working performance of the device, etc. The above situation can also be applied to the guide member 62.

[0044] As used herein, in various embodiments, the control unit 30 can be arranged within a common area S provided by the first bracket 10 and the second bracket 20 and connected to the second bracket 20 so as to be able to move relative to the first bracket 10 together with the second bracket 20 and be used to control the first friction member 40 and, in turn, the second friction member 50. The control unit 30 can be connected to and controlled by a controller 115 in the elevator system 101. With reference Figure 2 、 Figures 6 to 8 to the attached drawings such as

[0045] The fixing member 31 can be used as a carrier for the force-providing member 32, the electromagnetic member 33, etc., and can be optionally configured into a suitable structure such as a block. The fixing member 31 can be fixedly connected to the second bracket 20 by any feasible means such as welding, or alternatively, the fixing member 31 can be connected to the second bracket 20 in a detachable manner, for example, individually or in combination with connecting members (such as screws, bolts, etc.), a slot matching structure, etc., which can bring convenience to equipment installation and maintenance, etc.

[0046] The force-providing member 32 and the electromagnetic member 33 are mounted on the fixing member 31, and can respectively provide acting forces F1 and electromagnetic forces F2 to the first friction member 40. As used herein, in various embodiments, the force-providing member 32 can be configured with one or more elastic components as needed, for example, including but not limited to springs, etc., and one or more receiving portions 35 can be provided on the fixing member 31 to correspondingly accommodate the elastic components. By means of the force-providing member 32, an acting force F1 can be applied to the first friction member 40 so as to be able to urge it to move towards the brake disc 112. In this way, when needed, the first friction member 40 can be forced to move into place and then abut against the brake disc 112 in the elevator drive device to perform a braking operation, so that the elevator drive device can stop or slow down the power supply to the elevator system at present, achieving the operation purpose of stopping or slowing down the elevator operation at this time.

[0047] Reference Figure 14, as an illustrative example, in this figure, it is schematically shown that under the action of the above-mentioned acting force F1 provided by the force supply member 32 (the electromagnetic member 33 does not provide electromagnetic force at this time, which will be discussed later), the elevator braking device 100 can drive the first friction member 40 to come into contact with the side portion 112a of the brake disc 112 and perform a braking operation, and the elevator braking device 100 will be in a braking working state at this time. As Figure 14 shown, the braking operation can be performed by the second friction member 50 from the other side portion 112a of the brake disc 112, which will be further described hereinafter.

[0048] Continuing to refer to Figure 12 , the electromagnetic member 33 is arranged to be able to provide an electromagnetic force F2 to the first friction member 40. Under the action of the electromagnetic force F2, the first friction member 40 will tend to move along the guide member 60 in the direction towards the electromagnetic member 33 (i.e., away from the brake disc 112), which can be achieved by arranging or using a magnetic material (such as iron) that can respond to the electromagnetic suction force on the side portion 42 of the first friction member 40 facing the fixing member 31, etc.

[0049] When the electromagnetic force F2 applied by the electromagnetic member 33 to the first friction member 40 is sufficient to overcome the acting force F1 applied by the force supply member 32 (which is opposite to the direction of the electromagnetic force F2), the first friction member 40 will disengage from the braking working state that it previously maintained in contact with the brake disc 112, and then will move along the guide member 60 in the direction towards the fixing member 31, thereby releasing its original braking operation state on the side portion 112a of the brake disc 112; at the same time, under the action of the electromagnetic force, the first friction member 40 will also attract and drive the fixing member 31 to drive the second bracket 20 to move along the guide member 60 in the direction towards the brake disc 112, so as to enable the second friction member 50 to contact and perform a braking operation on the side portion 112b of the brake disc 112. Along with the above movement process, the first friction member 40 will affect the force supply member 32 and make the acting force F1 output by it become larger and larger. Once the influence of the current acting force F1 and the electromagnetic force F2 on components such as the first friction member 40 reaches an equilibrium, the second bracket 20 and the components connected thereto, etc. will remain stationary relative to the first bracket 10, and the elevator braking device 100 enters a non-braking working state.

[0050] Referring to Figure 12 and Figure 13 , as an illustrative example, in these two figures, it is specifically schematically shown the above-discussed process that due to the action of the electromagnetic force provided by the electromagnetic member 33, the elevator braking device 100 will change from the Figure 14 shown braking working state to the Figure 12 shown non-braking working state. In Figure 13 , an intermediate process in the above state change is shown. Vice versa, from Figures 12 to 14It can also show the change process of the elevator braking device 100 from the non-braking working state to the braking working state, and the description thereof will not be repeated here.

[0051] In practical applications, the electromagnetic component 33 is allowed to adopt any feasible method to provide the electromagnetic force. For example, the electromagnetic component 33 can be configured with one or more electromagnetic coils as required and installed at appropriate positions on the fixing member 31. When the electromagnetic coils are powered, electromagnetic force can be generated and output. On the contrary, when the power supply to the electromagnetic coils of the electromagnetic component 33 is stopped, no electromagnetic force will be output. At this time, the first friction member 40 will move along the guiding member 60 towards the side portion 112a of the brake disc 112 under the action force applied by the force supply member 32 and form contact. At the same time, the force supply member 32 also applies an acting force to the fixing member 31 to push the second bracket 20 to move along the guiding member 60 towards the side portion 10a of the first bracket 10, and then drive the second friction member 50 connected to the second bracket 20 to move towards the side portion 112b of the brake disc 112 and form contact. Thus, the elevator braking device 100 can enter, for example, Figure 14 the braking working state as shown.

[0052] It should be understood that regarding the configuration of the magnitude of the electromagnetic force of the electromagnetic component 33 and the acting force of the force supply member 32 in the elevator braking device 100, etc., it can be designed and adjusted according to the actual application requirements. The present invention does not make specific limitations on this, as long as they can be used in cooperation and achieve the functions described above.

[0053] In embodiments such as Figure 12 etc., when using the elevator braking device 100 to perform a braking operation on the elevator system 101, it can be carried out through the first friction member 40 and the second friction member 50 respectively from the two opposite side portions 112a and 112b of the brake disc 112, that is, it forms the effect of braking from two braking surfaces under the compact space layout of the elevator braking device 100, and sufficient braking torque and braking effect can be generated. Of course, in some application scenarios, it is also allowed not to provide the second friction member 50 and only use the first friction member 40 to perform the elevator braking operation, that is, the present invention can also provide an application solution with a single braking surface.

[0054] As used herein, in various embodiments, the first friction member 40 and / or the second friction member 50 can be optionally configured into a block structure. Compared with the circular structure commonly used in the existing disk brakes that also use electromagnetic force but have a complex structure, it has a larger braking radius and thus better braking effect. At the same time, compared with the existing block brakes, it can provide a larger braking torque and more reliable operating performance. Therefore, the technical advantages are very obvious.

[0055] As used herein, in various embodiments, a friction portion 41 is provided on one side of the first friction member 40 facing the brake disc 112, and a friction portion 51 is provided on one side of the second friction member 50 facing the brake disc 112. The above friction portion 41 and friction portion 51 can be made of the same or different friction-resistant materials, and their specific configuration dimensions can be the same or different. As an alternative, it can be considered to make the friction portion 41 and the friction portion 51 form a symmetric arrangement with respect to the brake disc 112, which is beneficial for achieving force balance during the braking operation.

[0056] As used herein, in various embodiments, an opening 12 can be optionally provided on the side portion 10b of the first bracket 10 facing the brake disc 112, so that the friction portion 41 of the first friction member 40 can enter and exit the common area S through the opening 12 when moving along the guide member 60, thereby facilitating contact with the first side 112a of the brake disc 112 for braking operation or disengaging. Regarding the above opening configuration, an exemplary display is made in Figure 4 this regard.

[0057] In addition, the second friction member 50 can be detachably mounted on the second bracket 20. For example, the connecting portion 52 between the second friction member 50 and the second bracket 20 can be configured to have a threaded structure for detachably mounting and connecting the second friction member 50 to a matching portion 23, such as a threaded hole structure, on the second bracket 20. When using a threaded connection method, it also allows for adjusting the clearance distance between the friction portion 51 and the second side 112b of the brake disc 112. In this way, it is convenient for the staff to adjust the braking operation of the elevator braking device 100 on the brake disc 112 as needed. For example, when it is found that there is a certain amount of wear on the friction portion 51 after use, the second friction member 50 can continue to be used by appropriately shortening the above clearance distance, ensuring the working performance of the elevator braking device and being beneficial for cost savings.

[0058] In addition, the adjusting member 70 can be provided as an optional configuration in the elevator braking device 100. The adjusting member 70 is configured to have an operating portion 72, and by operating the operating portion 72, the second bracket 20 can be moved relative to the first bracket 10 along the guide member 60. In this way, the holding distance between the second bracket 20 and the first bracket 10 in the non-braking operation state of the elevator braking device 100 can be adjusted and defined, and this distance is associated with the clearance distance between the friction portion 51 and the second side 112b of the brake disc 112. That is to say, by means of the adjusting member 70, the purpose of adjusting the clearance distance between the second friction member 50 and the brake disc 112 can be achieved, which is beneficial for still being able to continue using the second friction member 50 without affecting the braking performance of the elevator braking device in the case where the second friction member 50 has a certain amount of wear as shown above.

[0059] As used herein, in various embodiments, the adjusting member 70 can be configured to have a rod member 71 and an elastic member 73. The elastic member 73 can be, for example, a spring or the like and is sleeved on the rod member 71. When assembling the elevator braking device 100, one end of the rod member 71 can pass through the through hole 14 on the side portion 10a of the first bracket 10 and enter the accommodation area 11 and be connected to the second bracket 20. For example, they can be connected together in a detachable manner such as a threaded connection. After the installation is completed, the elastic member 73 sleeved on the rod member 71 will abut between the first bracket 10 and the second bracket 20. The operating portion 72 can be selectively arranged at a suitable position on the rod member 71, for example, arranged at the other end of the rod member 71 and located outside the first bracket 10 after installation, so as to facilitate the staff to directly operate from the outside.

[0060] Different from the existing products such as block brakes and disc brakes provided by the prior art, the present disclosure proposes an innovative elevator braking device, which has a quite compact structural configuration, can provide a sufficiently large braking torque and better working performance, is easy to manufacture, assemble and maintain, and at the same time has a considerable cost advantage. As mentioned above, the elevator braking device of the present invention has a wide range of applications and is perfectly suitable for being configured in elevator systems of low-rise, mid-rise or high-rise buildings, and is applicable to various elevator systems including but not limited to, for example, lifts, escalators, moving walks, etc.

[0061] The elevator braking device and the elevator system according to the present invention are only elaborated in detail by way of example above. These examples are only for explaining the principle and its implementation manner of the present invention, rather than limiting the present invention. Without departing from the scope of the present invention, those skilled in the art can also make various deformations and improvements. Therefore, all equivalent technical solutions should fall within the scope of the present invention and be defined by the various claims of the present invention.

Claims

1. An elevator braking device, characterized in that, Comprising: A first bracket having a first accommodation area, which is provided with a guide member and fixedly installed relative to the elevator drive device; A second bracket having a second accommodation area, which is arranged to be movable relative to the first bracket along the guide member, wherein the second accommodation area intersects with the first accommodation area to form a common area, and the volume of the common area changes with the movement of the second bracket; and A control unit and a first friction member, the control unit is arranged in the common area and connected to the second bracket, the first friction member is arranged adjacent to the control unit and can move relative to the second bracket along the guide member under its control, so that the first friction member contacts the brake disc of the elevator drive device in the first working state of the elevator braking device to perform a braking operation, and disengages from the brake disc in the second working state.

2. The elevator braking device according to claim 1, wherein, The elevator braking device further includes a second friction member, which is arranged in the second accommodation area and connected to the second bracket, the first friction member and the second friction member contact the first side and the second side opposite to the brake disc respectively in the first working state to perform a braking operation, and disengage from the first side and the second side respectively in the second working state.

3. The elevator braking device according to claim 2, wherein, The second friction member is detachably connected to the second bracket, and / or the friction portions of the first friction member contacting the first side and the second friction member contacting the second side are symmetrically arranged relative to the brake disc, and / or the first friction member and / or the second friction member are configured as a block structure.

4. The elevator braking device according to claim 1 or 2, wherein, The control unit includes a fixing member, an electromagnetic member and a force-providing member, the fixing member is connected to the second bracket, the electromagnetic member and the force-providing member are installed on the fixing member, the first friction member is movably arranged between the fixing member and the brake disc along the guide member, in the first working state the force-providing member provides a force to the first friction member to make it move towards the brake disc, so that the first friction member contacts the brake disc, and in the second working state the electromagnetic member provides an electromagnetic force to overcome the force and make the first friction member move towards the fixing member, so that the first friction member disengages from the brake disc.

5. The elevator braking device according to claim 4, wherein, The fixing member is detachably connected to the second bracket, the electromagnetic member includes one or more electromagnetic coils, the force-providing member includes one or more elastic components, and the elastic components include springs.

6. The elevator braking device according to claim 4, wherein, The fixing member and / or the first friction member are configured as a block structure.

7. The elevator braking device according to claim 1 or 2, wherein, The elevator braking device further includes an adjusting member, which is connected to the second bracket and provided with an operating portion for making the second bracket move relative to the first bracket along the guide member by operating the operating portion, so as to define the holding distance between the second bracket and the first bracket in the second working state.

8. The elevator braking device according to claim 7, wherein, The adjusting member includes a rod member and an elastic member. One end of the rod member passes through the side wall of the first bracket and extends into the first accommodating area to be connected with the second bracket. The operating portion is arranged at the other end of the rod member and is located outside the first bracket. The elastic member is sleeved on the rod member and is pressed between the first bracket and the second bracket. The elastic member includes a spring.

9. The elevator braking device according to claim 1 or 2, wherein, The guiding member includes one or more first guiding members and one or more second guiding members. The first guiding members are arranged to extend through the first accommodating area and the second accommodating area. The second guiding members are arranged in parallel with the first guiding members and extend through the first accommodating area.

10. The elevator braking device according to claim 9, wherein, The first guiding members and the second guiding members are configured to be rod-shaped. Through holes for the first guiding members and the second guiding members to correspondingly pass through are respectively provided on the first bracket, the second bracket, the control portion and the first friction member. And limiting portions are provided on the first guiding members and the second guiding members to limit their respective displacements with respect to the first bracket or the second bracket.

11. The elevator braking device according to claim 9, wherein, Bushings are provided between the first guiding member and the first bracket and / or the second bracket and / or the control portion and / or the first friction member, and / or bushings are provided between the second guiding member and the first bracket and / or the second bracket and / or the control portion and / or the first friction member.

12. The elevator braking device according to claim 1 or 2, wherein, The first bracket and the second bracket are configured to be substantially U-shaped. The second bracket is arranged in an inverted manner relative to the first bracket, with its first side portion placed in the first accommodating area and its second side portion opposite to the first side portion placed outside the first bracket. And the second side portion is arranged adjacent to the brake disc.

13. The elevator braking device according to claim 12, wherein, An opening is provided on the side portion of the first bracket facing the brake disc. When moving along the guiding member, the friction portion of the first friction member enters and exits the common area through the opening.

14. An elevator system, characterized in that, Comprising: An elevator driving device configured to provide power to drive an elevator system to operate. The elevator driving device has a brake disc. And An elevator braking device as claimed in any one of claims 1 - 13, which is arranged adjacent to the brake disc and is configured to operate by making contact with or disengaging from the brake disc, so as to prevent the elevator driving device from providing power to the elevator system in the first working state and allow the elevator driving device to provide power to the elevator system in the second working state.

15. The elevator system according to claim 14, wherein, The elevator driving device includes a traction machine and a hoist. The first bracket of the elevator braking device is mounted on the housing of the elevator driving device.

Images