Elevator master multi-brake manual brake release device and method of use

Abstract

The application belongs to the technical field of elevator equipment, and provides an elevator host multi-brake manual brake releasing device and a use method. The device comprises a crowbar mechanism, a pull rope piece and a plurality of brakes arranged on the elevator host. A brake releasing operation mechanism is arranged on the brake. The brake releasing operation mechanism comprises a brake releasing connecting part, a brake releasing acting part and a brake releasing pulling part. The brake releasing pulling part comprises a brake releasing pulling rod and an elastic assembly. The compression amount of the elastic assembly is set to act on the brake releasing acting part, the tension of the pull rope piece is adjusted, the plurality of brakes can be synchronously opened or unsynchronized opened, the opening operation of the plurality of brakes is operated by one crowbar mechanism, the number of operators is saved, and the maintenance cost is saved. The structural design of the scheme is reasonable, the occupied space is small, the production cost is low, the universality is strong, and the scheme is convenient to popularize.

Description

Technical Field

[0001] This invention belongs to the field of elevator equipment technology, specifically relating to a manual release device for multiple brakes of an elevator main unit and its usage method. Background Technology

[0002] In elevator systems, when a rescue operation is required, the drive unit brake should be able to be opened via continuous manual operation. This operation can be performed mechanically (e.g., by levers) or by an electrical device powered by an automatically charging emergency power supply.

[0003] Traditional mechanical brake release devices use a linkage and lever principle to manually open the drive unit brake. However, such devices are large in size, have long linkages, and require a large operating space.

[0004] When using a traditional mechanical brake release device, there may be multiple brakes, such as three or four, due to the increased torque of the main unit. Since most elevators now use manual brake release with one lever corresponding to one brake, when there are three or more brakes, one person can only open one brake with one hand, and one person can only continuously manually open two brakes. In this case, to ensure that all brakes can be continuously manually opened, multiple people need to work at the same time.

[0005] Existing technologies for simultaneously releasing brakes by pulling ropes require precise and simultaneous release of the brakes. However, they cannot address the issues of needing to release individual brakes in an orderly manner, or where all brakes cannot be released simultaneously. Furthermore, when the elastic elongation of the ropes is insufficient to compensate for the pulling errors of the two ropes, situations may arise where one brake is released while one rope is already taut, and the other is not yet released. This necessitates adjusting the lengths of the ropes to achieve simultaneous release, wasting rescue time. Summary of the Invention

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a manual release device for multiple brakes of an elevator main unit.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] A manual brake release device for a multi-brake elevator main unit, comprising:

[0009] The elevator includes a crowbar mechanism, a rope assembly, and multiple brakes mounted on the elevator main unit, wherein the brakes are equipped with a release mechanism.

[0010] The brake release mechanism includes a brake release connecting part, a brake release action part, and a brake release pulling part. The brake release connecting part is connected to the brake and the brake release action part respectively. One end of the brake release action part abuts against the brake. The brake release pulling part includes a brake release rod and an elastic component. The brake release rod is slidably engaged with the brake release action part. One end of the elastic component is connected to the brake release rod, and the other end of the elastic component abuts against the brake release action part.

[0011] The two ends of the pull rope are respectively connected to the crowbar mechanism and the brake release lever.

[0012] Preferably, the brake release connection is a brake release bolt.

[0013] Preferably, the brake release mechanism is a brake release lever seat, the brake release lever is slidably engaged with the upper end of the brake release lever seat, and the bottom end of the brake release lever seat is provided with a convex arc-shaped brake release device fulcrum that abuts against the brake.

[0014] Preferably, a brake release lever top rod connected to the brake release connection part is provided on the brake release lever seat and near the fulcrum of the brake release device;

[0015] An adjustment block is provided at the upper end of the brake release lever base. The adjustment block is hinged to the brake release lever base, and the brake release rod is slidably engaged with the adjustment block.

[0016] Preferably, the brake release lever is provided with a connecting ring, which is connected to the pull rope.

[0017] Preferably, the elastic component includes a first fixed seat, a second fixed seat, a spring member, and a nut member. The first fixed seat, the second fixed seat, and the spring member are sleeved on the brake release rod. The spring member is located between the first fixed seat and the second fixed seat. The nut member is threadedly connected to the brake release rod and abuts against the first fixed seat. The second fixed seat abuts against the brake release action part.

[0018] Preferably, the brake includes a stationary brake block, a moving brake block, a brake spring, and a brake pad, wherein the brake spring is disposed between the stationary brake block and the moving brake block, and the brake pad is connected to the moving brake block;

[0019] One end of the brake release mechanism abuts against the brake stationary block.

[0020] The brake release connection part slides with the stationary brake block and is connected to the moving brake block.

[0021] Preferably, the crowbar mechanism includes a crowbar fixing seat and a crowbar component, the crowbar component is hinged to the crowbar fixing seat, and the crowbar component is provided with a connecting seat for connecting to the pull rope component.

[0022] This invention also includes a method for using a manual release device for multiple brakes of an elevator main unit, applied to the aforementioned manual release device for multiple brakes of an elevator main unit, the steps of which are as follows:

[0023] S1. Adjust the brake release device;

[0024] S2. Install the brake release mechanism onto the brake;

[0025] S3. Connect the pull rope to the crowbar mechanism and the brake release lever respectively, and adjust the direction of the pull rope;

[0026] S4. The crowbar mechanism is activated to make the direction of the brake release pulling part consistent with the direction of the pull rope;

[0027] S5. The crowbar mechanism is activated to pull the brake release mechanism by the rope, and the brake release connection is activated to release the brake for vehicle rescue.

[0028] Compared with the prior art, the beneficial effects of the present invention include:

[0029] The manual release device for multiple brakes of the elevator host machine of this application is used in the release operation of the elevator host machine. By setting the compression amount of the elastic component to apply force to the release part, the tension of the pull rope is adjusted, which can realize the synchronous or asynchronous opening of multiple brakes. The opening operation of multiple brakes is operated by a single pry bar mechanism, which saves the number of operators and thus saves maintenance costs. The structure of this solution is reasonable, occupies little space, has low production cost, strong versatility, and is easy to promote. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the installation of the present invention.

[0032] Figure 2 This is a perspective view of the brake release mechanism of the present invention.

[0033] Figure 3 This is a schematic diagram of the brake release mechanism and brake installation of the present invention.

[0034] Figure 4 This is a schematic diagram of the brake of the present invention in the released state.

[0035] in:

[0036] 1-Crowbar mechanism, 101-Crowbar mounting base, 102-Crowbar component, 103-Crowbar pivot;

[0037] 2-Brake, 201-Brake stationary block, 202-Brake moving block, 203-Brake spring, 204-Brake pad;

[0038] 3-Brake release operating mechanism, 301-Brake release lever, 302-Brake release bolt, 303-Brake release pry head seat, 304-Brake release device fulcrum, 305-Brake release pry head top rod, 306-Adjusting block, 307-First fixed seat, 308-Second fixed seat, 309-Spring component, 310-Nut component;

[0039] 4- Pull rope component;

[0040] 5-Elevator main unit. Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0043] Example:

[0044] like Figure 1-4 As shown, this embodiment provides a manual release device for multiple brakes on an elevator main unit, comprising:

[0045] The system includes a crowbar mechanism 1, a rope component 4, and multiple brakes 2 mounted on the elevator main unit 5. Each brake 2 is equipped with a brake release mechanism 3.

[0046] The brake release mechanism 3 includes a brake release connecting part, a brake release action part, and a brake release pulling part. The brake release connecting part is connected to the brake 2 and the brake release action part respectively. One end of the brake release action part abuts against the brake 2. The brake release pulling part includes a brake release rod 301 and an elastic component. The brake release rod 301 is slidably engaged with the brake release action part. One end of the elastic component is connected to the brake release rod 301, and the other end of the elastic component abuts against the brake release action part.

[0047] The two ends of the rope component 4 are respectively connected to the crowbar mechanism 1 and the brake release lever 301.

[0048] In this embodiment, the brake release connection part is the brake release bolt 302, the brake release action part is the brake release pry head seat 303, the brake release rod 301 is slidably engaged with the upper end of the brake release pry head seat 303, the bottom end of the brake release pry head seat 303 is provided with a convex arc-shaped brake release device fulcrum 304 that abuts against the brake 2, wherein a brake release pry head top rod 305 is provided on the brake release pry head seat 303 and near the brake release device fulcrum 304, and an adjustment block 306 is provided at the upper end of the brake release pry head seat 303, the adjustment block 306 is hinged to the brake release pry head seat 303, and the brake release rod 301 is slidably engaged with the adjustment block 306. The function of the adjusting block 306 is to rotate around the brake release lever seat 303. When the pull rope 4 and the brake release lever 301 are at an angle, the adjusting block 306 will automatically rotate when the pull rope 4 is under tension, adjusting the corresponding angle so that the pull rope 4 and the brake release lever 301 are on the same straight line.

[0049] Specifically, the brake release lever 301 is equipped with a connecting ring, which is connected to the pull rope 4.

[0050] In this embodiment, the elastic component includes a first fixed seat 307, a second fixed seat 308, a spring member 309, and a nut member 310. The first fixed seat 307, the second fixed seat 308, and the spring member 309 are sleeved on the brake release rod 301. The spring member 309 is located between the first fixed seat 307 and the second fixed seat 308. The nut member 310 is threadedly connected to the brake release rod 301 and abuts against the first fixed seat 307. The second fixed seat 308 abuts against the brake release action part.

[0051] The brake 2 in this embodiment includes a stationary brake block 201, a moving brake block 202, a brake spring 203, and a brake pad 204. The brake spring 203 is disposed between the stationary brake block 201 and the moving brake block 202, and the brake pad 204 is connected to the moving brake block 202.

[0052] One end of the brake release mechanism, namely the brake release device fulcrum 304, abuts against the brake stationary block 201.

[0053] The brake release bolt 302 slides with the brake stationary block 201 and is connected to the brake moving block 202. At the same time, the brake release bolt 302 abuts against the brake release pry bar 305.

[0054] In this embodiment, the crowbar mechanism 1 includes a crowbar fixing seat 101 and a crowbar component 102. The crowbar component 102 is hinged to the crowbar fixing seat 101, and the crowbar component 102 is provided with a connecting seat that is connected to the pull rope component 4.

[0055] In this embodiment, the brakes 2 are respectively located at the top and both sides of the elevator host.

[0056] The operating principle of the device in this embodiment for opening brake 2 is as follows:

[0057] Utilizing the lever principle, in this brake release device, such as Figure 1 After installation, the contact point between the brake release lever seat 303 and the brake stationary block 201, i.e., the brake release device fulcrum 304, becomes the current lever fulcrum. When a gradually increasing force F1 is applied to the brake release lever 301, where F1 is the force exerted by the pull rope 4 on the brake release lever 301, the first step is to adjust the compression of the spring 309 of the elastic component. When the spring 309 is compressed to a specified value, let's call it L3, according to the principle of mechanical balance, the brake release bolt 302 is subjected to the tension F generated by the brake spring 203, which balances with F1 and the torque generated by the brake release device. When the gradually increasing force F1 increases again, the adjustment... The compression of spring 309 disrupts the balance between the tension F and F1 and the torque generated by the brake release device. The brake release lever begins to rotate around the fulcrum 304 of the brake release device. At this time, the lever's push rod 305 rotates around the fulcrum 304 and slowly moves away from the brake stationary block 201. The brake release bolt 302 and the brake moving block 202 also slowly move, increasing the compression of the brake spring 203 and the resulting tension F. When the gradually increasing force F1 becomes sufficient to allow the brake 2 to move to a stroke L1, the brake 2 opens, and the brake release lever seat 303 swings a distance L2. The spring compression at this point can be set to L4. By changing the position of the contact point between the brake release lever seat 303 and the brake stationary block 201, the lever force ratio can be changed, thereby adjusting the swing distance L2 of the brake release lever seat 303.

[0058] This invention also includes a method for using a manual release device for multiple brakes of an elevator main unit, applied to the aforementioned manual release device for multiple brakes of an elevator main unit, the steps of which are as follows:

[0059] S1. Adjust the brake release device:

[0060] s11. Simultaneously open the brakes 2 using the pry bar mechanism 1. Adjust the springs to compensate for any asynchronous opening errors caused by rope length, angle, etc., ensuring that all brakes 2 can be fully opened. The method is as follows: First, pre-install the pry bar fixing seat 101 in a fixed position. Adjust the length of the brake release device and the pull rope component 4. Screw the brake release bolt component 302 into each brake 2. Then, press the brake release pry bar seat 303 of the brake release device against the brake release bolt component 302. Figure 3 After installation, mount the pry bar 102 onto the pry bar mounting base 101 via the pry bar pivot 103. Connect the pry bar 102, pull rope 4, and brake release lever 301, positioning the pry bar 102 in a suitable position, such as approximately perpendicular to the pull rope 4, with the pull rope 4 taut. Then rotate the pry bar 102 by a certain angle and fix its position with a tool. Tighten the adjusting spring 309 using the nut 310 of the elastic component to adjust each brake individually until the brake 2 is released. After adjustment, the brake will release when the pry bar 102 is pulled to near the set position. Even with slight errors, the force of the pry bar 102 can be increased to allow for greater angle swing, compressing the springs 309 of each brake release device more, thus releasing all brakes. This prevents the problem of asynchronous release of brakes 2, which could lead to taut pull ropes and subsequent brakes failing to open.

[0061] s12. If it is required that not all brakes 2 can be opened simultaneously, the adjustment method is as follows: First, pre-install the pry bar fixing seat 101 in a fixed position, adjust the length of the brake release device and the pull rope 4, screw the brake release bolt 302 into each brake 2, and then press the brake release pry bar seat 303 of the brake release device with the brake release bolt 302. Figure 3After installation, mount the crowbar 102 onto the crowbar mounting base 101 via the crowbar pivot 103. Connect the crowbar 102, the pull rope 4, and the brake release lever 301, positioning the crowbar 102 in a suitable position, such as approximately perpendicular to the pull rope 4, with the pull rope 4 taut. Rotate the crowbar 102 by an angle, setting its position to position A1, and fix it. Adjust the length of the spring 309 of one brake release device to open the corresponding brake 2, while confirming that the other brakes 2 are closed. Increase the swing angle of the crowbar 102 further and fix it, setting its position to position A2. Adjust the other brake release device to open the corresponding brake 2, while confirming that the other unadjusted brakes 2 are closed. Increase the swing angle of the crowbar 102 again and fix it, continuing this adjustment process until all brakes 2 are adjusted. Finally, swing the pry bar to the corresponding positions A1, A2, etc., to confirm that each brake 2 is opened in the required sequence. After completion, fix the nut 310 and label the brake release device and the corresponding brake 2. For future rescue operations, simply install according to the corresponding labels. If the angle of the brake release pry head 303 is too large when the brake 2 is opened, i.e., the swing distance L2 of the brake release pry head 303 is too large, resulting in excessive compression of the spring 309 corresponding to the first brake 2 when all brakes are open, the value of L2 can be changed by designing and adjusting the position of the rotation point where the brake release pry head 303 contacts the brake 2. If the resultant force of the spring 309 is too large, a spring 309 with a lower elastic coefficient K can be selected. In this way, when the first brake 2 is opened, until the last brake 2 is fully opened, since the swing stroke of the crowbar 102 is fixed, the additional stroke of the spring 309 is fixed in addition to providing the compression L2 necessary to open the brake 2. The spring 309 with a lower elastic coefficient K can reduce the additional force.

[0062] S2. When the elevator malfunctions and rescue is required, the brake release mechanism 3 is installed on the brake 2.

[0063] S3. Connect the pull rope 4 to the crowbar mechanism 1 and the brake release lever 301 respectively, and adjust the direction of the pull rope 4.

[0064] S4. The action of the crowbar mechanism 1 makes the direction of the brake release pulling part consistent with the direction of the pull rope part 4;

[0065] S5, the pry bar mechanism 1 is used to pull the release brake pull part of the rope 4, and the release brake connection part is used to open the brake 2 for turning the vehicle for rescue.

[0066] In summary, this application solves the problem in the prior art where the pull rope becomes taut due to asynchronous opening of the various brakes 2, preventing the subsequent brakes 2 from opening. Furthermore, it addresses installation issues such as different screw-in depths of the release bolts, the mutual locking of the pull ropes, the angle and direction of the release device, and changes in the connection between the pull ropes, pull rods, and pry bars, all of which can cause asynchronous opening of the brakes 2. The elastic component in this application ensures reliable and stable opening of the brakes 2 by adjusting the compression of the spring 309.

[0067] If it is required that all brakes 2 cannot be opened at the same time, the opening sequence of each brake 2 can be set to prevent the turning gear from not responding in time due to opening too quickly at once.

[0068] Meanwhile, this application concentrates the opening of multiple brakes 2 on a single pry bar mechanism 1, saving the number of operators and thus reducing maintenance costs.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A manual brake release device for a multi-brake elevator main unit, characterized in that, include: The elevator includes a crowbar mechanism, a rope assembly, and multiple brakes mounted on the elevator main unit, wherein the brakes are equipped with a release mechanism. The brake release mechanism includes a brake release connecting part, a brake release action part, and a brake release pulling part. The brake release connecting part is connected to the brake and the brake release action part respectively. One end of the brake release action part abuts against the brake. The brake release pulling part includes a brake release rod and an elastic component. The brake release rod is slidably engaged with the brake release action part. One end of the elastic component is connected to the brake release rod, and the other end of the elastic component abuts against the brake release action part. The two ends of the pull rope are respectively connected to the crowbar mechanism and the brake release lever; The brake release mechanism is a brake release lever seat. The brake release lever is slidably engaged with the upper end of the brake release lever seat. The bottom end of the brake release lever seat is provided with a convex arc-shaped brake release device fulcrum that abuts against the brake. The brake release lever base is provided with a brake release lever top rod connected to the brake release connection part at a position near the fulcrum of the brake release device; The upper end of the brake release lever seat is provided with an adjustment block, the adjustment block is hinged to the brake release lever seat, and the brake release rod is slidably engaged with the adjustment block; The elastic component includes a first fixed seat, a second fixed seat, a spring member, and a nut member. The first fixed seat, the second fixed seat, and the spring member are sleeved on the brake release rod. The spring member is located between the first fixed seat and the second fixed seat. The nut member is threadedly connected to the brake release rod and abuts against the first fixed seat. The second fixed seat abuts against the brake release action part.

2. The elevator main unit multi-brake manual release device according to claim 1, characterized in that, The brake release connection is a brake release bolt.

3. The elevator main unit multi-brake manual release device according to claim 1, characterized in that, The brake release lever is equipped with a connecting ring, which is connected to the pull rope.

4. The elevator main unit multi-brake manual release device according to claim 1, characterized in that, The brake includes a stationary brake block, a moving brake block, a brake spring, and a brake pad. The brake spring is disposed between the stationary brake block and the moving brake block, and the brake pad is connected to the moving brake block. One end of the brake release mechanism abuts against the brake stationary block. The brake release connection part slides with the stationary brake block and is connected to the moving brake block.

5. The manual release device for multiple brakes of the elevator main unit according to claim 1, characterized in that, The crowbar mechanism includes a crowbar fixing seat and a crowbar component. The crowbar component is hinged to the crowbar fixing seat, and the crowbar component is provided with a connecting seat that is connected to the pull rope component.

6. A method for using a manual release device for multiple brakes on an elevator main unit, characterized in that, The steps for the manual release device for multiple brakes of the elevator main unit as described in any one of claims 1-5 are as follows: S1. Adjust the brake release device; S2. Install the brake release mechanism onto the brake; S3. Connect the pull rope to the crowbar mechanism and the brake release lever respectively, and adjust the direction of the pull rope; S4. The crowbar mechanism is activated to make the direction of the brake release pulling part consistent with the direction of the pull rope; S5. The crowbar mechanism is activated to pull the brake release mechanism by the rope, and the brake release connection is activated to release the brake for vehicle rescue.

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