Thrust testing device and thrust testing method

Abstract

The invention discloses a thrust testing device and a thrust testing method, and relates to the technical field of thrust detection, the thrust testing device comprises a testing frame and a measuring module, the testing frame is provided with a first side and a second side which are oppositely arranged, and the first side of the testing frame is provided with a plurality of mounting positions along a first direction; according to the technical scheme provided by the invention, by adopting the arrangement of the displacement sensor, the displacement of the brake iron core can be detected, and through the arrangement of the elastic piece, when the brake is electrified to move towards the pressure sensor and extrude, the pressure applied by the elastic piece can be measured through the pressure sensor; the brake force of the elastic piece is estimated through the pressure on the pressure sensor, so that the corresponding relation between the thrust and the displacement of the brake iron core is obtained, it is judged that an appropriate elevator brake is selected for use, and the purposes of effective brake opening and effective brake are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of thrust detection, and in particular to a thrust testing device and a testing method. Background Art

[0002] The working principle of the elevator brake is based on the interaction between electromagnetic force and brake spring pressure. The plunger structure elevator brake is mainly composed of three parts: the shell, the iron core and the coil. When the elevator is running, the brake is energized, and the magnetic force will drive the iron core to generate a bidirectional electromagnetic thrust, which separates the brake mechanism from the rotating part of the motor to ensure smooth operation of the elevator. Once the power is off, the electromagnetic force disappears, and the applied brake spring pressure takes effect immediately, so that the brake mechanism is in close contact with the rotating part of the motor, achieving a braking effect and ensuring that the elevator stops reliably.

[0003] However, during the normal operation of the elevator, it is easy for the elevator brake core to have insufficient thrust at the corresponding position or improper adjustment, resulting in insufficient core running stroke or insufficient brake holding force. The elevator brake will run for a long time (cannot be opened effectively), the brake shoe will heat up and wear severely, and eventually the elevator will be unable to stop, endangering the safety of passengers. Summary of the invention

[0004] The main purpose of the present invention is to propose a thrust testing device and a testing method, which aims to be able to test the corresponding relationship between the thrust and stroke of the brake core, so as to facilitate the selection of a suitable elevator brake to achieve the purpose of effective gate opening and effective braking stop.

[0005] To achieve the above object, the thrust testing device proposed in the present invention is characterized by comprising:

[0006] A test frame having a first side and a second side arranged opposite to each other, wherein the first side of the test frame is provided with a plurality of mounting positions along a first direction, wherein the plurality of mounting positions at least include a first mounting position and a second mounting position, wherein the first mounting position is used to mount a brake;

[0007] A measuring module is arranged at the second installation position, and the measuring module includes a supporting structure, a mounting portion, an elastic member, a pressure sensor and a displacement sensor; the supporting structure is arranged on the test frame, the mounting portion is movably arranged on the supporting structure along a first direction, the elastic member is arranged between the mounting portion and the supporting structure, and is used to apply an elastic force to the mounting portion so that the mounting portion is close to the brake, the pressure sensor is arranged on a side of the mounting portion close to the brake, and the displacement sensor is used to detect the displacement of the brake.

[0008] In one embodiment, the support structure is detachably mounted on the test frame.

[0009] In one embodiment, the support structure includes a plurality of support frames, the lower ends of the plurality of support frames are arranged on the test frame, and the upper end of one of the support frames close to the brake is penetrated with the mounting portion movably arranged in the first direction.

[0010] In one embodiment, the support structure also includes a plurality of fixing plates, and the plurality of fixing plates are arranged between two adjacent support frames to enclose an activity space. The elastic member is arranged in the activity space, and the two ends of the elastic member are respectively connected to the mounting portion and a support frame away from the brake.

[0011] In one embodiment, the mounting portion includes a connecting rod and an abutment plate, one end of the connecting rod passes through the upper end of one of the support frames close to the brake and is connected to the abutment plate, the pressure sensor is provided at one end of the connecting rod away from the abutment plate, and the end of the abutment plate away from the connecting rod abuts against the elastic member.

[0012] In one embodiment, the thrust testing device further comprises an adjusting portion, which is movably disposed along a first direction on a support frame away from the brake, and abuts against the adjusting portion and a side of the elastic member away from the brake to adjust the elastic force of the elastic member.

[0013] In one embodiment, the thrust testing device further comprises a base, and the base is arranged between the pressure sensor and the mounting portion; wherein,

[0014] The base and the pressure sensor are detachably mounted; and / or,

[0015] The base and the mounting portion are detachably mounted.

[0016] In one embodiment, a fixing groove is provided at one end of the base away from the mounting portion, and the pressure sensor is arranged in the fixing groove; and / or,

[0017] An installation groove is arranged at one end of the installation portion close to the base, and the base is arranged in the installation groove.

[0018] The present invention also provides a testing method for a thrust testing device. Based on the thrust testing device, the thrust testing device further includes a control device, and the control device is electrically connected to the pressure sensor and the displacement sensor. The testing method for the thrust testing device includes the following steps:

[0019] Acquiring a pressure signal from the pressure sensor and a displacement signal from the displacement sensor;

[0020] A pressure-displacement characteristic curve of the brake iron core is calculated and outputted according to the pressure signal and the displacement signal.

[0021] In one embodiment, the testing method of the thrust testing device further comprises the following steps:

[0022] Adjusting the initial elastic force value of the elastic member to obtain a plurality of groups of pressure signals and displacement signals under different elastic force values;

[0023] According to the pressure signal and the displacement signal obtained under each group of different elastic force values, the pressure-displacement characteristic curve of the corresponding group of brake iron cores is calculated and output respectively.

[0024] The technical solution of the present invention can detect the displacement of the brake core by adopting the setting of the displacement sensor. Through the setting of the elastic member, when the brake is energized and moves toward the pressure sensor and squeezes, the pressure applied by the elastic member can be measured by the pressure sensor, and the braking force of the elastic member can be estimated using the pressure on the pressure sensor, thereby obtaining the corresponding relationship between the thrust size and displacement of the brake, determining and selecting a suitable elevator brake for use, and achieving the purpose of effective gate opening and effective braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A structural schematic diagram of an embodiment of a thrust testing device provided by the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0028] Figure 3 for Figure 1 A top view of

[0029] Figure 4 A schematic flow chart of a testing method for a thrust testing device provided by the present invention.

[0030] Description of Figure Numbers:

[0031] 100. thrust test device; 1. test frame; 11. first side; 111. first installation position; 112. second installation position; 12. second side; 2. measurement module; 21. support structure; 211. support frame; 212. fixing plate; 22. mounting portion; 221. connecting rod; 222. abutting plate; 223. mounting groove; 23. elastic member; 24. pressure sensor; 25. displacement sensor; 3. adjusting portion; 31. screw rod; 32. nut; 4. base; 41. fixing groove;

[0032] 200. Control device.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The working principle of the elevator brake is based on the interaction between electromagnetic force and brake spring pressure. The plunger structure elevator brake is mainly composed of three parts: the shell, the iron core and the coil. When the elevator is running, the brake is energized, and the magnetic force will drive the iron core to generate a bidirectional electromagnetic thrust, which separates the brake mechanism from the rotating part of the motor to ensure smooth operation of the elevator. Once the power is off, the electromagnetic force disappears, and the applied brake spring pressure takes effect immediately, making the brake mechanism in close contact with the motor to achieve a braking effect and ensure that the elevator stops reliably.

[0038] However, during the normal operation of the elevator, it is easy for the elevator brake core to have insufficient thrust at the corresponding position or improper adjustment, resulting in insufficient core running stroke or insufficient brake holding force. The elevator brake will run for a long time (cannot be opened effectively), the brake shoe will heat up and wear severely, and eventually the elevator will be unable to stop, endangering the safety of passengers.

[0039] The present invention provides a thrust testing device and a testing method, which are intended to be able to test the corresponding relationship between the thrust and stroke of a brake iron core, so as to facilitate the selection of a suitable elevator brake to achieve the purpose of effective gate opening.

[0040] See also Figures 1 to 3 In one embodiment of the present invention, the thrust test device 100 includes a test frame 1 and a measuring module 2: the test frame 1 has a first side 11 and a second side 12 that are arranged opposite to each other, the first side 11 of the test frame 1 is provided with a plurality of mounting positions along a first direction, the plurality of mounting positions at least include a first mounting position 111 and a second mounting position 112, the first mounting position 111 is used to mount a brake; the measuring module 2 is arranged at the second mounting position 112, the measuring module 2 includes a supporting structure 21, a mounting portion 22, an elastic member 23, a pressure sensor 24 and a displacement sensor 25; the supporting structure 21 is arranged on the test frame 1, the mounting portion 22 is movably arranged on the supporting structure 21 along the first direction, the elastic member 23 is arranged between the mounting portion 22 and the supporting structure 21, and is used to apply elastic force to the mounting portion 22 so that the mounting portion 22 is close to the brake, the pressure sensor 24 is arranged on a side of the mounting portion 22 close to the brake, and the displacement sensor 25 is used to detect the displacement of the brake core.

[0041] The technical solution of the present invention can detect the displacement of the brake core by adopting the setting of the displacement sensor 25. Through the setting of the elastic member 23, when the brake is energized and moves toward the pressure sensor 24 and squeezes, the pressure applied by the elastic member 23 can be measured by the pressure sensor 24, and the braking force of the elastic member 23 can be estimated by using the pressure on the pressure sensor 24, so as to obtain the corresponding relationship between the thrust size and displacement of the brake, determine and select a suitable elevator brake for use, and achieve the purpose of effective opening and effective braking.

[0042] In this embodiment, there is no specific limitation on the configuration of the elastic member 23, such as a spring.

[0043] It can be understood that, in some embodiments, the number of the measurement modules 2 can be two groups, which are arranged on both sides of the brake core, so that the thrust test of the brake is more accurate.

[0044] In some embodiments, the support structure 21 may be provided in an integrated support structure, such as being processed into one piece with the test frame 1 to form an integral structure, thereby ensuring the stability and rigidity of the support structure 21. Alternatively, a split structure may be adopted, that is, the support structure 21 is connected to the test frame 1 in some manner (such as screws, bolts, etc.), which facilitates installation and disassembly and can be flexibly adjusted according to different test requirements.

[0045] Specifically, in one embodiment, the support structure 21 is detachably arranged on the test stand 1. With such arrangement, the support structure 21 can be used flexibly to adapt to different test scenarios.

[0046] It is understandable that the detachable connection may be provided by bolting, screwing or snap-on installation.

[0047] It should be supplemented that the test stand 1 is provided with a mounting lock, which can facilitate the test stand 1 to be moved to other locations for fixed use.

[0048] Further, in one embodiment, the support structure 21 includes a plurality of support frames 211, the lower ends of the plurality of support frames 211 are arranged on the test frame 1, and the upper end of one of the support frames 211 close to the brake is provided with the mounting portion 22 movably arranged in the first direction. In this way, the support frame 211 provides a movable position for the mounting portion 22, so that the mounting portion 22 can move on the support frame 211, thereby driving the pressure sensor 24 to move.

[0049] It can be understood that in this embodiment, there is no specific restriction on the setting form of the support frame 211. In order to more conveniently use the support frame 211 on the test frame 1, the support frame 211 can be set to an inverted T shape to increase the contact area with the test frame 1, so as to facilitate detachable connection through bolts and other structures.

[0050] In one embodiment, the support structure 21 further includes a plurality of fixing plates 212, which are arranged between two adjacent support frames 211 to enclose an activity space, and the elastic member 23 is arranged in the activity space, and the two ends of the elastic member 23 are respectively connected to the mounting portion 22 and a support frame 211 away from the brake. In this way, the elastic member 23 is confined in the fixed space through the enclosed space, which reduces the influence of the external structure on the elastic member 23, improves the stability of the elastic member 23 moving in the first direction, and reduces the error.

[0051] In this embodiment, there is no specific limitation on the arrangement of the mounting portion 22, such as the cooperation between a rod and a plate.

[0052] Specifically, the mounting portion 22 includes a connecting rod 221 and an abutment plate 222, one end of the connecting rod 221 passes through the upper end of one of the support frames 211 close to the brake and is connected to the abutment plate 222, the pressure sensor 24 is arranged at the end of the connecting rod 221 away from the abutment plate 222, and the end of the abutment plate 222 away from the connecting rod 221 abuts against the elastic member 23. In this arrangement, the mounting portion 22 can move freely on the support frame 211 away from the brake through the connecting rod 221 and the abutment plate 222, and can adapt to the test requirements under different elastic forces, and the pressure sensor 24 can also be buffered and protected to a certain extent through the arrangement of the elastic member 23.

[0053] In order to facilitate the adjustment of the elastic force of the elastic member 23, the thrust test device 100 further includes an adjustment portion 3, which is movably arranged along the first direction on a support frame 211 away from the brake, and abuts against the adjustment portion 3 and the side of the elastic member 23 away from the brake, so as to adjust the elastic force of the elastic member 23. In this way, the elastic force of the elastic member 23 can be adjusted by controlling the adjustment portion 3, thereby simulating the corresponding relationship between the displacement and pressure of the test brake under different elastic force values, thereby improving the accuracy of the test.

[0054] It needs to be explained that the adjustment part 3 can be set in the form of a screw 31, one end of which is inserted into the support frame 211 away from the brake and extends into the abutment plate 222, and the elastic member 23 is sleeved on the outer peripheral wall of the screw 31 to provide stable support for the elastic member 23. A nut 32 is threadedly connected to the outer peripheral wall of the screw 31, and one side of the nut 32 abuts against the side of the elastic member 23 away from the brake. By rotating the nut 32, the elastic member 23 can be squeezed to move to the side close to the brake to adjust the compression degree of the elastic member 23, that is, to perform pressure testing under different elastic force values.

[0055] It should be noted that, since the displacement stroke of the brake core is small, the stroke of the elastic member 23 can be ignored. The force measured by the pressure sensor 24 and the braking force applied by the elastic member 23 are in a balanced relationship, that is, the braking force of the elastic member 23 can be estimated by the pressure on the pressure sensor 24.

[0056] It can be understood that in this embodiment, preferably, the number of the support frames 211 is set to four, and every two of the support frames 211 are arranged on both sides of the brake core along the first direction, respectively providing support positions for the mounting part 22 and the adjustment part 3, thereby improving the stability and reliability of the test.

[0057] Considering the practicality of the thrust test device 100, which can match the use of different types of pressure sensors, in one embodiment, the thrust test device 100 further includes a base 4, which is arranged between the pressure sensor 24 and the mounting portion 22; wherein the base 4 and the pressure sensor 24 are detachably mounted. In this way, the base 4 provides a stable basic support for the thrust test device 100, and can effectively disperse and alleviate the impact of the thrust on the pressure sensor and the entire device, thereby improving the accuracy and reliability of the test; through the detachable installation of the base 4 and the pressure sensor 24, the user can separate the base 4 from the pressure sensor 24 according to the test requirements or equipment maintenance requirements, which is not only convenient for the user to calibrate, repair or replace the pressure sensor 24, but also can quickly adjust the configuration of the thrust test device 100 in different test scenarios to adapt to different test objects and test conditions.

[0058] It is understandable that the detachable connection may be provided by bolting, screwing or clamping.

[0059] Of course, in order to facilitate maintenance of the pressure sensor 24, in one embodiment, the thrust test device 100 further includes a base 4, which is disposed between the pressure sensor 24 and the mounting portion 22; wherein the base 4 and the mounting portion 22 are detachably mounted. Thus, through the detachable mounting between the base 4 and the mounting portion 22, the user can conveniently remove the base 4 for cleaning or replacement, which helps to extend the service life of the thrust test device 100. In addition, the base can be reasonably selected according to the requirements under different test conditions to improve usability.

[0060] It is understandable that the detachable connection may be provided by bolting, screwing or clamping.

[0061] In one embodiment, a fixing groove 41 is provided at one end of the base 4 away from the mounting portion 22, and the pressure sensor 24 is disposed in the fixing groove 41. Thus, the fixing groove 41 provides a stable mounting position for the pressure sensor 24, thereby improving the fixing effect of the pressure sensor 24.

[0062] In one embodiment, a mounting groove 223 is provided at one end of the mounting portion 22 close to the base 4, and the base 4 is disposed in the mounting groove 223. Thus, the mounting groove 223 provides a certain fixed space for the base 4, so that the base 4 can be initially positioned by relying on the fixed space, thereby improving the installation effect of the base 4.

[0063] The present invention also proposes a testing method for a thrust testing device, which includes a thrust testing device. The specific structure of the thrust testing device refers to the above-mentioned embodiment. Since the testing method for the thrust testing device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0064] See also Figure 4 In one embodiment, the thrust testing device 100 further includes a control device 200, and the control device 200 is electrically connected to the pressure sensor 24 and the displacement sensor 25. The testing method of the thrust testing device includes the following steps:

[0065] S10, obtaining a pressure signal from the pressure sensor 24 and a displacement signal from the displacement sensor 25;

[0066] S20. Calculate and output a pressure-displacement characteristic curve of the brake core according to the pressure signal and the displacement signal.

[0067] With such arrangement, during the test, the thrust applied by the brake and the displacement of the brake core are respectively measured in real time by the pressure sensor 24 and the displacement sensor 25, and these measured values ​​are transmitted to the control device 200 in the form of electrical signals. The control device 200 receives the signal from the sensor and performs necessary signal processing, such as filtering and amplification, to ensure the accuracy and reliability of the data. Then, the control device 200 calculates the pressure-displacement characteristic of the brake core according to the processed signal. The control device 200 plots the calculated pressure-displacement data points into a curve, i.e., the pressure-displacement characteristic curve of the brake core. The curve intuitively shows the displacement of the brake core under different thrusts, which is helpful to evaluate its performance, i.e., it is convenient for elevator manufacturing units to reasonably select the brake of the elevator.

[0068] In one embodiment, the testing method of the thrust testing device further comprises the following steps:

[0069] S30, adjusting the initial elastic force value of the elastic member 23 to obtain a plurality of groups of pressure signals and displacement signals under different elastic force values;

[0070] S40, respectively calculating and outputting the pressure-displacement characteristic curve of the corresponding group of brake cores according to the pressure signal and the displacement signal obtained under each group of different elastic force values.

[0071] With such arrangement, before the test starts, by adjusting the initial elastic force value of the elastic member 23 (such as a spring), different load conditions or working environments can be simulated, and the performance of the brake core under different loads, including its thrust output and displacement response, etc., can be evaluated. For each adjusted elastic force value, the thrust test device 100 is used for testing, and the signals of the pressure sensor 24 and the displacement sensor 25 are recorded in real time. According to the pressure signal and displacement signal obtained under each group of different elastic force values, the control device 200 is used for calculation, and then the corresponding pressure-displacement characteristic curve is obtained, so as to analyze the performance change trend and law of the brake core according to multiple groups of pressure-displacement characteristic curves.

[0072] It needs to be explained that when the brake coil is energized and the voltage is the starting voltage, the brake is opened, and the brake core moves rapidly to the left and right sides (first direction), the displacement sensor 25 measures the displacement of the core, and the pressure sensor 24 measures the pressure applied by the core to it. Based on the measurement data of the two, a curve of pressure change over time and a curve of displacement change over time are drawn.

[0073] In addition, in the holding stage after the brake is opened, the brake coil voltage changes from the starting voltage to the holding voltage, the displacement sensor 25 measures the displacement of the iron core, and the pressure sensor 24 measures the pressure applied by the iron core. Based on the measurement data of the two, a pressure change curve over time and a displacement change curve over time are drawn, and finally the test results are saved.

[0074] In some other embodiments, the testing method of the thrust testing device 100 further includes the following steps:

[0075] S50, setting an initial elastic force value of the elastic member 23, and obtaining the pressure-displacement characteristic curves of a plurality of brake cores based on the elastic force value;

[0076] S60. Fitting and outputting an empirical pressure-displacement characteristic curve of the brake core according to the pressure-displacement characteristic curves of the plurality of brake cores.

[0077] With such a configuration, by setting the initial elastic force value of the elastic member 23 (such as a spring), the load condition or working environment under certain conditions can be simulated. Based on the elastic force value, the performance of multiple brake cores under a certain load can be evaluated. Then, according to the performance of each different brake core, the control device 200 is used to perform calculations to obtain an empirical pressure-displacement characteristic curve, which is convenient for elevator manufacturing units to select and judge.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A thrust test device, characterized in that: include: A test frame having a first side and a second side arranged opposite to each other, wherein the first side of the test frame is provided with a plurality of mounting positions along a first direction, wherein the plurality of mounting positions at least include a first mounting position and a second mounting position, wherein the first mounting position is used to mount a brake; A measuring module is arranged at the second installation position, and the measuring module includes a supporting structure, a mounting portion, an elastic member, a pressure sensor and a displacement sensor; the supporting structure is arranged on the test frame, the mounting portion is movably arranged on the supporting structure along a first direction, the elastic member is arranged between the mounting portion and the supporting structure, and is used to apply elastic force to the mounting portion so that the mounting portion is close to the brake, the pressure sensor is arranged on a side of the mounting portion close to the brake, and the displacement sensor is used to detect the displacement of the brake core.

2. The thrust testing device according to claim 1, characterized in that: The supporting structure is detachably arranged on the test frame.

3. The thrust testing device according to claim 2, characterized in that: The support structure includes a plurality of support frames, the lower ends of which are arranged on the test frame, and the upper end of one of the support frames close to the brake is penetrated by the mounting portion movably arranged in the first direction.

4. The thrust testing device according to claim 3, characterized in that: The support structure also includes a plurality of fixing plates, which are arranged between two adjacent support frames to enclose an activity space. The elastic member is arranged in the activity space, and both ends of the elastic member are respectively connected to the mounting portion and a support frame away from the brake.

5. The thrust testing device according to claim 3, characterized in that: The mounting portion includes a connecting rod and an abutment plate, one end of the connecting rod passes through the upper end of one of the support frames close to the brake and is connected to the abutment plate, the pressure sensor is provided at one end of the connecting rod away from the abutment plate, and the end of the abutment plate away from the connecting rod abuts against the elastic member.

6. The thrust testing device according to claim 3, characterized in that: The thrust testing device also includes an adjusting part, which is movably arranged along a first direction on a support frame away from the brake and abuts against the adjusting part and a side of the elastic member away from the brake to adjust the elastic force of the elastic member.

7. The thrust testing device according to claim 1, characterized in that: The thrust testing device further comprises a base, which is arranged between the pressure sensor and the mounting portion; wherein, The base and the pressure sensor are detachably mounted; and / or, The base and the mounting portion are detachably mounted.

8. The thrust testing device according to claim 7, characterized in that: A fixing groove is provided at one end of the base away from the mounting portion, and the pressure sensor is arranged in the fixing groove; and / or, An installation groove is arranged at one end of the installation portion close to the base, and the base is arranged in the installation groove.

9. A method for testing a thrust test device, characterized in that: Based on the thrust test device described in claims 1 to 8 above, the thrust test device further comprises a control device, the control device is electrically connected to the pressure sensor and the displacement sensor, and the testing method of the thrust test device comprises the following steps: Acquiring a pressure signal from the pressure sensor and a displacement signal from the displacement sensor; A pressure-displacement characteristic curve of the brake core is calculated and outputted according to the pressure signal and the displacement signal.

10. The testing method of the thrust testing device according to claim 9, characterized in that: The testing method of the thrust testing device further comprises the following steps: Adjusting the initial elastic force value of the elastic member to obtain a plurality of groups of pressure signals and displacement signals under different elastic force values; According to the pressure signal and the displacement signal obtained under each group of different elastic force values, the pressure-displacement characteristic curve of the corresponding group of brake iron cores is calculated and output respectively.

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