Manufacturing apparatus for an elevator emergency brake device
By introducing a braking force testing and adjustment device, the braking force of the elevator emergency braking device can be tested and adjusted in real time, solving the problems of large equipment size and low production efficiency in the existing technology, and realizing the improvement of elevator on-site adjustment and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MITSUBISHI ELEVATOR CO LTD
- Filing Date
- 2023-02-20
- Publication Date
- 2026-06-05
AI Technical Summary
Existing testing equipment for the braking force of elevator emergency braking devices is bulky, requires high strength for the fixing devices, has low production efficiency, and cannot be adjusted on-site when the elevator is in use.
It employs a braking force testing device and a braking force adjustment device, including a data acquisition unit, an output unit, and a calculation unit, to test and adjust the braking force in real time, providing suggestions on the adjustment location and amount of braking force, adapting to on-site adjustments in elevator use.
It improves the production efficiency of elevator emergency braking devices, reduces equipment size, enables on-site adjustment of braking force, and reduces worker skills training costs and adjustment cycles.
Smart Images

Figure CN116238982B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevators, and more particularly to a manufacturing equipment for an elevator emergency braking device. Background Technology
[0002] An emergency braking device is an essential component of an elevator. The emergency braking device involved in this invention refers to one fixed to the car or counterweight, which brakes by clamping the car or counterweight guide rails. In industry standards and related regulations, it is commonly referred to as a safety clamp. The braking principle of the safety clamp is that under the pressure of an elastic element, a wedge clamps the guide rail, and the frictional braking force between the wedge and the guide rail brakes the elevator car or counterweight. According to national elevator standards and for personal safety considerations, the braking deceleration must be controlled within a certain range; too high or too low a deceleration may cause injury to passengers. Due to manufacturing and assembly errors, to achieve precise braking force, the design documents generally specify the requirements for braking force adjustment and testing. This is an essential step in the manufacturing of the safety clamp, and the actual measured braking force after debugging is the direct basis for inspection and acceptance.
[0003] The commonly used braking force testing method during manufacturing and assembly is as follows: The safety clamp wedges are lifted to clamp a section of the test guide rail. A tensioning device is used to vertically lift the test guide rail. A force measuring device measures the average tension force as the guide rail slides a certain distance between the wedges after being clamped; this is the braking force on one side of the safety clamp. The braking force on the other side is measured using the same method. The commonly used testing equipment is a general-purpose tensile testing machine that can directly read the tensile force value, or a tensioning device with a sensor to obtain the tensile force value. Regardless of the testing equipment used, the safety clamp under test must be firmly fixed with a fixing device during testing. The fixing device must be able to withstand the tensile force applied by the tensioning device during the test. For integrated safety clamps with a clamp body and mounting frame that have a large braking force, since the test is conducted on one side only, the fixing device must also be able to withstand the torque generated by the tension on one side of the safety clamp. The braking force of safety clamps is generally large; some high-speed or sightseeing elevators with large load capacities have a single-side braking force of over 10 tons, requiring very strong fixing devices and high strength of the base to which the fixing device is attached during braking force testing. In addition, general-purpose tensile testing machines with a loading capacity of over 10 tons are bulky. If a dedicated tensile device is used, it is also necessary to design and construct load-bearing components similar to those of the general-purpose tensile testing machine that can withstand reaction forces of over 10 tons, which are also bulky. This greatly restricts the layout of the production line and makes it impossible to further improve production efficiency.
[0004] Accurate braking force testing is only the basis and prerequisite for adjustment. If the measured braking force does not meet the requirements, the clearance of relevant components or the compression of elastic elements must be adjusted before the braking force is tested again. Currently, this adjustment is all done manually by operators, and the parts and amounts of adjustment largely depend on the operator's subjective judgment. Adjusting to the required braking force often requires multiple iterations, the number of which depends on the operator's experience and skill level, requiring significant worker skills training costs and leading to uncertainty in production efficiency.
[0005] Another situation arises when elevator modifications, renovations, or other reasons alter the mass of the car and counterweight, or the elevator's load capacity. This renders the original braking force setting of the safety brake inadequate for the actual situation, necessitating adjustment. However, limitations in braking force testing equipment prevent on-site adjustments; the elevator must be transported back to the manufacturing plant, resulting in high adjustment costs and long lead times.
[0006] Chinese utility model patent (authorization announcement number CN201053909Y) discloses a method and apparatus for testing the braking force of safety clamps using a pressure method instead of a tension method. Compared with the conventional tension method, the pressure method can greatly reduce the force on the fixing device and lower the strength requirements of the fixing device. However, the base on which the safety clamp under test is placed still needs to be able to withstand the entire test pressure, and the strength requirements of the force-applying device remain unchanged, still resulting in a large size. Secondly, testing the safety clamp using the pressure method requires inversion. Many integral safety clamp frames are designed for actual elevator installation needs and are not suitable for inversion. Therefore, different inversion fixtures need to be designed according to different safety clamp frame structures during testing, which cannot improve production efficiency and cannot solve the problem of on-site adjustment in elevator use. Summary of the Invention
[0007] The summary of this invention introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0008] The technical problem to be solved by the present invention is to provide a manufacturing equipment that can provide suggestions on the braking force adjustment position and adjustment amount during the manufacturing process of emergency braking devices, so as to improve production efficiency.
[0009] Another technical problem to be solved by the present invention is to provide a manufacturing device that is small in size and can be adapted to the use site of elevators to adjust the braking force.
[0010] To solve the above-mentioned technical problems, the present invention provides a manufacturing apparatus for an elevator emergency braking device, comprising:
[0011] Braking force testing device and braking force adjustment device; the braking force testing device is used to test the braking force of the emergency braking device in real time during the manufacturing or adjustment process and output braking force test data; the braking force adjustment device includes a data acquisition unit, an output unit and a calculation unit;
[0012] The data acquisition unit is used to collect basic data information of the emergency braking device, key dimension information of the assembly process, and braking force test data.
[0013] The basic data information includes at least the model and specifications of the emergency braking device, and the preset braking force requirement value corresponding to the model and specifications; the key dimension information of the assembly process includes at least two key dimensions of the assembly process, which are key dimensions that have a direct impact on the braking force after the emergency braking device is assembled.
[0014] The output unit includes a display device or a printing device;
[0015] The calculation unit includes a braking force calculation module, a braking force test data determination module, and a braking force adjustment calculation module.
[0016] The braking force calculation module is used to obtain braking force test data of the effective braking segment and calculate the average braking force and minimum braking force of the effective braking segment.
[0017] The braking force test data determination module is used to determine whether the average and minimum braking forces of the effective braking segment meet the preset requirements.
[0018] The braking force adjustment calculation module is used to calculate and determine the key dimensions and adjustment amounts of the assembly process that need to be adjusted.
[0019] Preferably, the key dimensional information of the assembly process includes at least two of the following: the compression amount of the elastic element, the gap between the wedges, the gap between the wedges and the top of the clamp body, and the opening angle of the elastic element support.
[0020] Preferably, meeting the preset requirements means whether the average braking force and the minimum braking force of the effective braking segment are both within the preset braking force requirement range.
[0021] Preferably, the method for obtaining braking force test data for the effective braking segment is as follows: determine the starting data and ending data of the braking force test data, and the braking force test data between the starting data and the ending data is the braking force test data for the effective braking segment.
[0022] The computing unit includes a sensor for determining the moving position of the wedge and the movement of the simulated guide rail. When the sensor determines that the wedge has moved to the top of the clamp body, it issues a first trigger signal. The computing unit then calibrates the braking force data collected at this point in time, after receiving the trigger signal and adding the initial delay time, as the initial data. When the sensor determines that the simulated guide rail has stopped moving, it issues a second trigger signal. The computing unit then calibrates the braking force data collected at this point in time, after subtracting the termination advance time from the point in time when the simulated guide rail stops moving, as the termination data.
[0023] Preferably, the braking force adjustment calculation module calculates and determines the key dimensions and adjustment amounts of the assembly process that need to be adjusted as follows:
[0024] Step S1: Determine the critical dimensions of the assembly process to be adjusted and the adjustment sequence according to the direction of braking force adjustment; Step S2: Calculate the maximum adjustable amount and maximum adjustable value of the critical dimensions of the assembly process to be adjusted and the maximum adjustable braking force; Step S3: Determine the critical dimensions of the assembly process to be adjusted and the corresponding adjustment amount according to the adjustment sequence.
[0025] Preferably, the braking force adjustment device further includes a control unit, which is used to control the moving speed and moving stroke of the simulated guide rail during the braking force testing device test.
[0026] Preferably, the manufacturing equipment for the elevator emergency braking device further includes an automatic adjustment device, and the control unit controls the automatic adjustment device to perform adjustments to key dimensions of the assembly process.
[0027] Compared with existing technologies, the above technical solution can provide suggestions on the adjustment location and amount of braking force during the braking force testing and adjustment process, thereby improving production efficiency.
[0028] Preferably, the braking force testing device consists of a tension device, a tension sensor, a simulated guide rail, and a support rod; one end of the support rod is rigidly connected to the tension device, and the other end directly abuts against the top plate of the frame of the emergency braking device under test when tension is applied.
[0029] Preferably, the tension device is a hydraulic device, one end of the tension sensor is connected to the exposed end of the cylinder piston of the hydraulic device, and the other end of the tension sensor is connected to the pin of the simulated guide rail.
[0030] Preferably, the support rod is a cylindrical or square tube with openings at both ends.
[0031] Preferably, the tension device is an electric screw device, one end of the tension sensor is connected to the exposed end of the screw of the electric screw device, and the other end of the tension sensor is connected to the pin of the simulated guide rail.
[0032] Compared with existing technologies, the above-mentioned braking force testing device can make the manufacturing equipment compact and adaptable to the needs of adjusting braking force at elevator usage sites. Attached Figure Description
[0033] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
[0034] Figure 1 This is a schematic diagram of the elevator emergency braking device in Example 1;
[0035] Figure 2 This is a schematic diagram of the elevator emergency braking device in Example 2;
[0036] Figure 3 This is a schematic diagram of the elevator emergency braking device in Example 3. Detailed Implementation
[0037] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
[0038] Example 1
[0039] This embodiment provides a manufacturing equipment suitable for the automated production of elevator emergency braking devices in factories. The manufacturing equipment includes a braking force testing device and a braking force adjustment device.
[0040] Braking force testing devices may employ, for example, the general tensile testing machine mentioned in the background art or a dedicated tensile or compressive device, and the compressive device may be a similar braking force testing device as described in the published patent CN201053909Y mentioned in the background art.
[0041] In this embodiment, what distinguishes it from the prior art is the braking force adjustment device, which will be described in detail below.
[0042] The braking force adjustment device includes a data acquisition unit, an output unit, and a calculation unit; preferably, it may also include a control unit.
[0043] The data acquisition unit is used to collect basic data information of the emergency braking device, key dimensional information of the assembly process, and braking force test data.
[0044] The basic data information includes at least the model and specifications of the emergency braking device, and the preset braking force requirement value corresponding to the model and specifications, wherein the preset braking force requirement value is a range value. An exemplary method for collecting the basic data information is as follows: based on the model and specifications of the emergency braking device, the corresponding basic data is retrieved from the database. The model and specifications can be obtained either by reading electronic tags or by manual input into the software interface.
[0045] The critical dimensions of the assembly process are those that directly affect the braking force after the emergency braking device is assembled. Examples include the compression of the elastic element, the gap between the wedges, the gap between the wedges and the top of the clamp, and the opening angle of the elastic element support. The critical dimensions of the assembly process can be acquired either automatically by reading data from electronic measuring equipment or manually by inputting data into a software interface. This critical dimension information is used by the calculation unit for calculations and by the output unit for displaying or printing reports.
[0046] An exemplary method for acquiring braking force test data is to directly read the test data from the braking force testing device. The braking force test data is then displayed by the output unit and used for calculations by the calculation unit.
[0047] The output unit includes a display device and a printing device. The display device can display braking force test data, the minimum and average values of braking force after the test, the parts and amounts of braking force that need to be adjusted after calculation, and the key dimensions of each assembly process after assembly. The printing device can output a final assembly report of the emergency braking device in a fixed format for inspection and acceptance.
[0048] The calculation unit includes a braking force calculation module, a braking force test data determination module, and a braking force adjustment calculation module.
[0049] The braking force calculation module is used to calculate the average and minimum braking force of the effective braking segment. Since braking force test data can be acquired in real time, the average and minimum braking force values can be obtained by averaging and minimizing these data points. The key to this calculation lies in determining the effective braking segment, i.e., identifying the starting and ending points of the braking force test data. The braking force test data within this range is considered the effective braking segment.
[0050] The method for determining the starting and ending data is as follows: In the initial stage of the braking force test, the wedge of the emergency braking device clamps the simulated guide rail and rises together with it. There is no relative movement between the wedge and the simulated guide rail until the wedge abuts the clamp body. The braking force measured during this period is the static friction force between the wedge and the simulated guide rail and cannot be used as the calculation data for the effective braking force. Subsequently, the guide rail continues to rise, and slippage occurs between the guide rail and the wedge until the simulated guide rail has completed its predetermined stroke. Only the braking force measured during this period can be used as the calculation data. Therefore, the calculation unit includes a sensor to determine whether the wedge has moved to the top of the clamp body. When the wedge moves to the top of the clamp body, a first trigger signal is given. During calculation, the braking force data collected at the point in time after receiving the trigger signal plus the starting delay time (exemplarily tens of milliseconds) is calibrated as the starting data. The sensor also determines whether the simulated guide rail has stopped moving. When the sensor determines that the simulated guide rail has stopped moving, a second trigger signal is given. The braking force data collected at the point in time after subtracting the termination advance time (exemplarily hundreds of milliseconds) when the simulated guide rail stops moving is calibrated as the ending data. Adding an initial delay time to the initial stage can filter out the impact generated when static friction is converted into dynamic friction, and subtracting the termination advance time from the termination stage can eliminate signal lag caused by trigger signal delay.
[0051] The braking force test data determination module is used to determine whether the average braking force and the minimum braking force requirement of the effective braking segment meet the preset requirements. Meeting the preset requirements means that the average braking force and the minimum braking force of the effective braking segment are both within the range of the preset braking force requirement.
[0052] The braking force adjustment calculation module is used to calculate and determine the critical dimensions and adjustment amounts of the assembly process that need to be adjusted. When the braking force test data judgment module determines that the average and minimum braking forces of the effective braking segment meet the requirements, the emergency braking device does not need to be adjusted, and the results can be output directly. When the requirements are not met, it is necessary to calculate and determine which critical dimension of the assembly process of the emergency braking device needs to be adjusted and its adjustment amount, and then output the result.
[0053] Under normal circumstances, adjustments to multiple parts will affect the braking force, and the critical dimensions of each part's assembly process should be adjusted within a specified range. The adjustment priority also varies between different parts. Randomly adjusting a single part may fail to meet the braking force adjustment requirements, or may prevent a part from being adjusted to its limit position, requiring repeated attempts and testing of braking force, leading to low manufacturing efficiency. Furthermore, for different specifications and models of emergency braking devices, the number of adjustment parts and the elasticity coefficients vary greatly. To obtain optimal calculation results, a more complex logical operation model must be constructed. Since the specified values of the critical dimensions of each part's assembly process and the required braking force are not unique values but rather have a certain range, this type of calculation can be classified as fuzzy computation. The calculation results may not be unique, and one or two calculation results are ultimately output after optimization.
[0054] The braking force adjustment calculation module calculates and determines the key dimensions and adjustment amounts of the assembly process that need to be adjusted as follows:
[0055] Step S1: Determine the key dimensions and adjustment sequence of the assembly process to be adjusted based on the direction of brake force adjustment;
[0056] Step S2: Calculate the maximum adjustable amount and maximum adjustable value of the critical dimensions of the assembly process that need to be adjusted;
[0057] Step S3: Determine the critical dimensions of the assembly process that need to be adjusted and the corresponding adjustment amount according to the adjustment sequence.
[0058] The above method will be illustrated with a specific example below.
[0059] A certain model of emergency braking device has four adjustable braking force points: the compression of the elastic element, the gap between the wedges, the gap between the wedges and the top of the clamp, and the opening angle of the elastic element support. This means there are four critical dimensions for assembly processes.
[0060] Step S1: Based on the direction of brake force adjustment, determine the critical dimensions and adjustment sequence of the assembly process to be adjusted. For example, after brake force testing, determine the minimum brake force f. min and average braking force All are less than the preset braking force requirement. Based on the need for a larger adjustment in braking force and considering the requirements of key dimensions in the assembly process, it was determined that only two key dimensions in the assembly process—the "gap between the wedge and the top of the clamp" (T) and the "compression amount of the elastic element" (S)—are adjustable. According to the preset rules, adjusting the "gap between the wedge and the top of the clamp" should be prioritized. Therefore, the adjustment order is determined to be: first adjust the "gap between the wedge and the top of the clamp" (T), then adjust the "compression amount of the elastic element" (S).
[0061] Then proceed to step S2, calculating the maximum adjustable amount and maximum adjustable value of the critical dimensions of the assembly process that need adjustment. The maximum adjustable amount T is calculated separately. max and S max Calculate the maximum adjustable braking force T based on the gap between the wedge and the top of the clamp body. max ×k T And the maximum braking force adjustable value S according to the compression of the elastic element. max ×k S , where k T The elastic coefficient, k, is related to the gap between the wedge and the top of the clamp body. S It is the elastic coefficient that is related to the amount of compression of the elastic element.
[0062] Step S3: Determine the critical dimensions of the assembly process that need to be adjusted and the corresponding adjustment amount according to the adjustment sequence.
[0063] If condition one is met Less than If the lower limit value is found, then the adjustment amount T = T_0 between the wedge and the top of the clamp can be determined. max Continue calculating the adjustment amount of the compression S of the elastic element; if Between Within the range, the adjustment amount S = S max Then output the result; if Greater than The upper limit of the adjustment amount Then output the result; if Less than If the lower limit value is not reached, then the adjustment is abnormal and it is necessary to return to step S1 to redetermine the critical dimensions of the assembly process to be adjusted and the adjustment sequence.
[0064] If condition two is met Between Within this range, the adjustment amount T = T_0 between the wedge and the top of the clamp can be determined. max Furthermore, the only critical dimension in the assembly process is adjusting the gap between the wedge and the top of the clamp body;
[0065] If condition three is met Greater than If the upper limit is determined, then the adjustment amount of the gap between the wedge and the top of the clamp can be determined. Furthermore, only the critical dimension of the assembly process, the gap between the wedge and the top of the clamp, needs to be adjusted.
[0066] Multiple preset rules can be set in step S1, such as two, so that the braking force adjustment calculation module can output two adjustment results for the operator to choose from.
[0067] Preferably, the braking force adjustment device further includes a control unit, which controls the moving speed and travel of the simulated guide rail during the braking force testing device test, so as to adapt to various models and specifications of emergency braking devices.
[0068] Preferably, the manufacturing equipment for the elevator emergency braking device also includes an automatic adjustment device, which is an automatic manipulator or robot. The control unit is used to control the automatic adjustment device to perform adjustments of key dimensions in the assembly process, so as to achieve automated manufacturing.
[0069] Example 2
[0070] The manufacturing equipment for elevator emergency braking devices provided in this embodiment, which is suitable for automated production in factories, differs from Embodiment 1 in that the braking force testing device is different, while the braking force adjustment device is the same as in Embodiment 1.
[0071] like Figure 2 As shown, the braking force testing device in this embodiment consists of a tension device 2, a tension sensor 5, a simulated guide rail 6, and a support rod 4.
[0072] The braking force testing device is freely suspended on the cantilever crane 1. The tension device 2 can be of various types, such as hydraulic, pneumatic, or screw-type devices; in this embodiment, a hydraulic device is selected. One end of the support rod 4 is rigidly connected to the hydraulic cylinder body via a thread, while the other end directly abuts against the top plate of the frame of the emergency braking device 8 under test when tension is applied. One end of the tension sensor is connected to the exposed end of the cylinder piston 3, and the other end is connected to the simulated guide rail 6 via a pin. The free suspension of the braking force testing device and the pin connection to the simulated guide rail allow the braking force testing device to automatically align with the wedge 7 of the emergency braking device when tension is applied.
[0073] During testing, wedge 7 is lifted to clamp the simulated guide rail 6. The hydraulic cylinder piston contracts, causing the simulated guide rail 6 to rise. Under the action of friction, the wedge rises along with the simulated guide rail and continuously compresses the elastic element of the emergency braking device, increasing the positive pressure of the wedge on the simulated guide rail until it stops rising after hitting the clamp. At this point, the guide rail continues to rise under the action of the hydraulic cylinder piston, causing slippage between the wedge and the guide rail. After a predetermined stroke, the hydraulic cylinder piston stops contracting. The support rod structure added between the hydraulic cylinder body and the emergency braking device becomes the medium for mutual force transmission, forming an internal force transmission structure between the tension device and the emergency braking device. The tension is no longer transmitted to other external structures; the stress is mainly concentrated at the contact part between the support rod and the emergency braking device frame, and at the connection part between the support rod and the hydraulic cylinder body. Since the hydraulic cylinder body and the emergency braking device frame are designed to meet the usage requirements, the design of the tension device only needs to consider the compressive strength of the support rod. Generally, cylindrical structures have good compressive strength. Therefore, using open cylindrical or square structures is both lightweight and compact, while still meeting strength requirements. The openings can be used to connect cables and facilitate installation and adjustment.
[0074] Example 3
[0075] The manufacturing equipment for the elevator emergency braking device suitable for on-site modification provided in this embodiment differs from that in Embodiment 1 in that the braking force testing device is different, and the braking force adjustment device does not have a control part. The output unit only includes a display device, while the rest is the same as in Embodiment 1.
[0076] like Figure 2 As shown, the braking force testing device consists of a tension device, a tension sensor 5, a simulated guide rail 6, and a support rod 4. The braking force testing device is placed directly on the frame of the emergency braking device 8 under test. In this embodiment, an electric screw device is selected as the tension device. The connection method of each component differs from that in embodiment 2 in that: the screw device housing replaces the hydraulic cylinder body; the screw 3 replaces the cylinder piston; the rest are the same. The lifting and lowering of the screw 3 is driven by the motor 1 through the reduction mechanism 2. During the test, the simulated guide rail 6 can rise at a constant speed, ensuring the accuracy of the braking force test. The tension device is equipped with a manual switch to directly control the forward and reverse rotation of the motor. Terminal switches are configured at the upper and lower ends of the screw lifting to control the lifting limits.
[0077] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.
[0078] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.
Claims
1. Manufacturing equipment for an elevator emergency braking device, characterized in that, include: Braking force testing device and braking force adjustment device; The braking force testing device is used to test the braking force of the emergency braking device in real time during the manufacturing or adjustment process and output braking force test data; the braking force adjustment device includes a data acquisition unit, an output unit and a calculation unit. The data acquisition unit is used to collect basic data information of the emergency braking device, key dimension information of the assembly process, and braking force test data. The basic data information includes at least the model and specifications of the emergency braking device, and the preset braking force requirement value corresponding to the model and specifications; the key dimension information of the assembly process includes at least two key dimensions of the assembly process, which are key dimensions that have a direct impact on the braking force after the emergency braking device is assembled. The output unit includes a display device or a printing device; The calculation unit includes a braking force calculation module, a braking force test data determination module, and a braking force adjustment calculation module. The braking force calculation module is used to obtain braking force test data of the effective braking segment and calculate the average braking force and minimum braking force of the effective braking segment. The braking force test data determination module is used to determine whether the average and minimum braking forces of the effective braking segment meet the preset requirements. The braking force adjustment calculation module is used to calculate and determine the key dimensions and adjustment amounts of the assembly process that need to be adjusted.
2. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that: The key dimensional information of the assembly process includes at least two of the following: the compression amount of the elastic element, the gap between the wedges, the gap between the wedges and the top of the clamp body, and the opening angle of the elastic element support.
3. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that: The phrase "meeting the preset requirements" refers to whether the average and minimum braking forces of the effective braking segment are both within the preset braking force requirement range.
4. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that, The method for obtaining braking force test data for the effective braking segment is as follows: Determine the starting and ending data points for the braking force test data. The braking force test data between the starting and ending data points is the braking force test data for the effective braking segment.
5. The manufacturing equipment for the elevator emergency braking device as described in claim 4, characterized in that: The computing unit includes a sensor for determining the moving position of the wedge and simulating the movement of the guide rail; When the sensor determines that the wedge has moved to the top of the clamp body, it gives a first trigger signal. The calculation unit calibrates the braking force data collected at this time point after receiving the trigger signal plus the start delay time as the start data. When the sensor determines that the simulated guide rail has stopped moving, it gives a second trigger signal. The calculation unit will calibrate the braking force data collected at the time point when the simulated guide rail stops moving (after subtracting the termination advance time) as the termination data.
6. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that, The braking force adjustment calculation module calculates and determines the key dimensions and adjustment amounts of the assembly process that need to be adjusted as follows: Step S1: Determine the key dimensions and adjustment sequence of the assembly process to be adjusted based on the direction of brake force adjustment; Step S2: Calculate the maximum adjustable amount and maximum adjustable value of the critical dimensions of the assembly process that need to be adjusted; Step S3: Determine the critical dimensions of the assembly process that need to be adjusted and the corresponding adjustment amount according to the adjustment sequence.
7. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that: The braking force adjustment device also includes a control unit, which is used to control the moving speed and travel distance of the simulated guide rail during the braking force testing device test.
8. The manufacturing equipment for the elevator emergency braking device as described in claim 7, characterized in that: The manufacturing equipment for the elevator emergency braking device also includes an automatic adjustment device, and the control unit controls the automatic adjustment device to perform adjustments to key dimensions of the assembly process.
9. The manufacturing equipment for the elevator emergency braking device as described in claim 1, characterized in that: The braking force testing device shown consists of a tension device, a tension sensor, a simulated guide rail, and a support rod. One end of the support rod is rigidly connected to the tensioning device, and the other end directly abuts against the top plate of the frame of the emergency braking device under test when tension is applied.
10. The manufacturing equipment for the elevator emergency braking device as described in claim 9, characterized in that: The tension device is a hydraulic device. One end of the tension sensor is connected to the exposed end of the cylinder piston of the hydraulic device, and the other end of the tension sensor is connected to the simulated guide rail with a pin.
11. The manufacturing equipment for the elevator emergency braking device as described in claim 9, characterized in that: The support rod is a cylindrical or square tube with openings at both ends.
12. The manufacturing equipment for the elevator emergency braking device as described in claim 9, characterized in that: The tension device is an electric screw device. One end of the tension sensor is connected to the exposed end of the screw of the electric screw device, and the other end of the tension sensor is connected to the pin of the simulated guide rail.