CN218917057U - Elevator step detection equipment - Google Patents
Elevator step detection equipment Download PDFInfo
- Publication number
- CN218917057U CN218917057U CN202223053384.2U CN202223053384U CN218917057U CN 218917057 U CN218917057 U CN 218917057U CN 202223053384 U CN202223053384 U CN 202223053384U CN 218917057 U CN218917057 U CN 218917057U
- Authority
- CN
- China
- Prior art keywords
- pressure
- pressing
- fixing
- load
- detection mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses elevator step detection equipment which comprises a base body, a fixing component, a pressure detection mechanism, a horizontal detection mechanism and a displacement detection part, wherein the fixing component is used for fixing steps, the pressure detection mechanism comprises a pressing part, and the horizontal detection mechanism comprises two side pressing parts. Through setting up pressure detection mechanism, can be at the downward activity of pushing down the portion, apply certain load to the up end of step, when the sight that the simulation step received normal conventional load, displacement detection portion detects the bending deformation ability of step after receiving normal load, through setting up horizontal detection mechanism, can be when two side pressure portions are close to each other, extrude the side of step, the simulation step is blocked in at having the foreign matter, when the sight that receives the unconventional load, displacement detection portion detects the step and receives the deformation volume of unusual load back, the step in the upper and lower orientation to solve the step after receiving the unconventional load, current detection method can not truly detect the problem of bending deformation ability of step.
Description
Technical Field
The utility model relates to the technical field of elevator detection, in particular to elevator step detection equipment.
Background
The test requirements in the 5.3.3.2.1 step static load test of the escalator standard escalator and moving walkway (GB 16899-2011) are as follows: the steps should be subjected to a bending deformation test. The test method is that a 3000N force (comprising the weight of the backing plate) is vertically applied to the central part of the tread of the step through a steel backing plate. The pad has an area of 0.2m x 0.3m and a thickness of at least 25mm, and has a 0.2m side parallel to the step front edge and a 0.3m side perpendicular to the step front edge. Wherein 3000N is a load that only considers the normal passenger (with possible baggage) and the step dead weight. In actual practice, the above-described "bending deformation test" is often used as a test method for evaluating the step strength at the same time. The bending deformation resistance test only verifies whether the structural rigidity of the step can ensure that the deformation caused by the step subjected to the conventional load cannot exceed the size requirement of normal engagement of the step and the comb plate, and the strength of the step cannot be directly evaluated.
The main reasons for the step fracture in the operation of the escalator are that the step is impacted or blocked by foreign matters, the roller is aged or lost, and the like, so that the step is subjected to other additional loads besides the conventional load, and the step can be broken and failed.
Disclosure of Invention
The utility model mainly aims to provide elevator step detection equipment, which aims to solve the problem that the existing detection method cannot truly detect the bending deformation resistance of a step after the step is subjected to an irregular load.
To achieve the above object, the present utility model provides an elevator step detecting apparatus, wherein the elevator step detecting apparatus includes:
a base;
the fixing component is arranged on the seat body and used for fixing the steps;
the pressure detection mechanism comprises a pressing part which is movably arranged along the up-down direction, and the pressing part is used for pressing a step positioned below the pressing part in the downward moving stroke;
the horizontal detection mechanism comprises two side pressure parts which are arranged at intervals in the transverse direction and can be mutually close to and far from the base body in the transverse direction so as to clamp a step between the two side pressure parts in a stroke of mutually close; the method comprises the steps of,
and a displacement detection unit for detecting the amount of deformation of the step in the up-down direction when the pressing unit moves downward and the two side pressing units move closer to each other.
Optionally, each side pressure part comprises a pressing plate extending up and down, and the pressing plate is provided with a through hole along the transverse direction;
the horizontal detection mechanism further comprises a screw rod and a nut, the screw rod is provided with a fixed end and a locking end, the screw rod penetrates through the penetrating holes of the two pressing plates, the nut is in threaded connection with the locking end of the screw rod, and the nut is used for driving the pressing plates close to the locking end to move towards the pressing plates close to the fixed end in the locking stroke.
Optionally, a plurality of penetrating holes are formed, and the penetrating holes are distributed at intervals on the plane where the pressing plate is located;
the screw rods and the nuts are all provided with a plurality of holes, and the screw rods and the nuts are respectively arranged in one-to-one correspondence with the penetrating holes on the two pressing plates.
Optionally, the side pressure part further comprises a pressure head arranged on the pressure plate, the pressure head is arranged on one side of the pressure plate, which faces the comb teeth, and the pressure head is arranged corresponding to the comb teeth of the step.
Optionally, the level detecting mechanism is movably disposed in a longitudinal direction so that the indenter can correspond to a plurality of detecting points of the comb teeth in the longitudinal direction.
Optionally, the level detection mechanism further includes a first pressure sensor, where the first pressure sensor is disposed between the pressure plate and the pressure head, so as to detect a pressure of the side end surface of the step acting on the pressure head.
Optionally, the pressure detection mechanism further includes a first driving device, where the first driving device has a first driving portion movably disposed along an up-down direction, and the first driving portion is connected to the pressing portion, so as to drive the pressing portion to move up and down.
Optionally, the pressure detection mechanism further includes a control device and a second pressure sensor, the second pressure sensor is used for detecting the pressure of the pressing portion acting on the upper end face of the step, and the control device is electrically connected with the second pressure sensor and the first driving device, and is used for controlling the first driving device to work according to the second pressure sensor.
Optionally, the pressure detection mechanism further includes a mounting portion and a buffer portion, the mounting portion is fixedly disposed on the first driving portion, and the buffer portion is disposed between the mounting portion and the pressing portion, so as to provide buffering when the pressing portion abuts against an upper end surface of the step.
Optionally, the fixing component comprises a fixing seat, a plurality of fixing shafts extending horizontally are arranged on the fixing seat, the plurality of fixing shafts are arranged at intervals, and each fixing shaft is used for being inserted into a corresponding rotating shaft mounting hole on the step.
According to the technical scheme provided by the utility model, the step is fixed through the fixing component, the pressing part moves downwards, a certain load is applied to the upper end face of the step, the situation that the step is subjected to normal and regular load is simulated, the displacement detection part detects that when the pressing part applies load to the upper end face of the step, deformation of the step cannot exceed the size requirement of normal meshing of the step and the comb plate, when the two side pressing parts are mutually close, the side ends of the step are extruded, the simulated step is clamped with foreign matters and subjected to abnormal load, the situation that the deformation of the step cannot exceed the step deformation requirement when the displacement detection part detects that the two side pressing parts apply load to the side ends of the step, and the horizontal detection mechanism is arranged to apply lateral force to the step.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of an embodiment of an elevator step detection apparatus provided by the present utility model;
fig. 2 is an exploded structural schematic view of the elevator step detection apparatus of fig. 1.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The test requirements in the 5.3.3.2.1 step static load test of the escalator standard escalator and moving walkway (GB 16899-2011) are as follows: the steps should be subjected to a bending deformation test. The test method is that a 3000N force (comprising the weight of the backing plate) is vertically applied to the central part of the tread of the step through a steel backing plate. The pad has an area of 0.2m x 0.3m and a thickness of at least 25mm, and has a 0.2m side parallel to the step front edge and a 0.3m side perpendicular to the step front edge. Wherein 3000N is a load that only considers the normal passenger (with possible baggage) and the step dead weight. In actual practice, the above-described "bending deformation test" is often used as a test method for evaluating the step strength at the same time. The bending deformation resistance test only verifies whether the structural rigidity of the step can ensure that the deformation caused by the step subjected to the conventional load cannot exceed the size requirement of normal engagement of the step and the comb plate, and the strength of the step cannot be directly evaluated. The main reasons for the step fracture in the operation of the escalator are that the step is impacted or blocked by foreign matters, the roller is aged or lost, and the like, so that the step is subjected to other additional loads besides the conventional load, and the step can be broken and failed.
In order to solve the above problems, the present utility model provides an elevator step detecting apparatus, and fig. 1 to 2 are specific embodiments of the elevator step detecting apparatus provided by the present utility model.
Referring to fig. 1 to 2, the elevator step detecting apparatus includes a base, a fixing assembly, a pressure detecting mechanism 1, a level detecting mechanism 2, and a displacement detecting portion, wherein the fixing assembly is disposed on the base, and is used for fixing a step 100; the pressure detection mechanism 1 comprises a pressing part 11, wherein the pressing part 11 is movably arranged on the seat body along the up-down direction so as to press the step 100 positioned below the pressing part 11 in the downward moving stroke; the level detecting mechanism 2 includes two side pressure parts 21, the two side pressure parts 21 are arranged at intervals in the transverse direction and can be mutually close to and far from the base in the transverse direction, so as to clamp the step 100 between the two side pressure parts 21 in the mutually close stroke; the displacement detecting unit is configured to detect a deformation amount of the step 100 in the up-down direction when the pressing down unit 11 moves downward and the two side pressing units 21 move closer to each other.
When the step 100 is caught by a foreign object, the roller is aged or lost, the step 100 is mainly subjected to an abnormal load due to a lateral side force.
According to the technical scheme provided by the utility model, the step 100 is fixed through the fixing component, the pressing part 11 moves downwards, a certain load is applied to the upper end face of the step 100, the situation that the step 100 is subjected to normal and normal load is simulated, the displacement detection part detects that when the pressing part 11 applies load to the upper end face of the step 100, deformation of the step 100 cannot exceed the size requirement of normal meshing of the step 100 and the comb teeth 101 plate, the two side pressure parts 21 press the side ends of the step 100 when approaching each other, the situation that foreign matters are clamped in the step 100, the step 100 is subjected to abnormal load is simulated, the deformation amount of the step cannot exceed the deformation requirement when the two side pressure parts 21 apply load to the side ends of the step 100, the horizontal detection mechanism 2 is arranged to apply lateral force to the step, and the displacement detection part can detect the normal load and the bending deformation resistance of the step after the step is subjected to the abnormal load, so that the bending deformation resistance of the step cannot be truly detected by the existing detection method after the step is subjected to the abnormal load.
It should be noted that the displacement detecting portion may be configured as a displacement sensor, a dial indicator, or other devices capable of measuring the step deformation, and the specific measuring manner is not specifically limited in this scheme.
Specifically, the two side pressure parts 21 may be driven to move by providing an electric driving device, and after the side pressure parts 21 are connected by the driving part of the driving device, the side pressure parts 21 are driven to move, and the electric driving device may be an air cylinder, an oil cylinder, an electric cylinder, or the like.
Referring to fig. 2, in this embodiment, each side pressure portion 21 includes a pressing plate 211 extending vertically, where a through hole 212 is formed in the pressing plate 211 along a transverse direction, in order to drive the two pressing plates 211 to approach or separate from each other, the level detecting mechanism 2 further includes a screw 22 and a nut 23, where the screw 22 has a fixed end and a locking end, the locking end of the screw 22 penetrates from the through hole 212 of one pressing plate 211, the locking end sequentially penetrates through the two pressing plates 211, the screw 22 penetrates through the two pressing plates 211, then the nut 23 is screwed to the locking end of the screw 22, and as the nut 23 rotates, the nut 23 is gradually locked and finally abuts against the pressing plate 211 near the locking end, and in order to enable the two pressing plates 211 to apply a clamping load to the step 100, the nut 23 can be adjusted to continue to rotate, and as the screw head of the screw 22 abuts against the pressing plate 211 near the fixed end, the nut 23 abuts against the pressing plate 211 when the nut 23 rotates, and thus the step is convenient to apply a clamping load to the step 211.
Further, in order to make the forces acting on the steps 100 by the two pressing plates 211 more uniform, in this embodiment, a plurality of through holes 212 are provided, a plurality of through holes 212 are arranged at intervals on the plane where the pressing plates 211 are located, a plurality of screws 22 and nuts 23 are provided, and a plurality of screws 22 and nuts 23 are respectively arranged in one-to-one correspondence with a plurality of through holes 212 on the two pressing plates 211. In this way, the locking depth of the plurality of nuts 23 is adjusted, so that the holding force of the two pressing plates 211 corresponding to the plurality of through holes 212 can be adjusted.
Further, since the step 100 has an irregular shape and a similar triangle in cross section, the action point corresponding to the pressing plate 211 is generally located at a position corresponding to the comb teeth 101, and in order to simulate the insertion of foreign matters like coins, in this embodiment, the side pressing portion 21 further includes a pressing head 24 disposed on the pressing plate 211, the pressing head 24 is disposed on a side of the pressing plate 211 facing the comb teeth 101, and the pressing head 24 is disposed corresponding to the comb teeth 101 of the step 100. When the foreign matter is clamped in, the stress is concentrated on the corresponding force point of the clamped foreign matter, so by arranging the pressure heads 24, the pressure at the pressure heads 24 can be detected when the two pressure plates 211 are used for providing the load in a squeezing mode, and when the pressure at the pressure heads 24 reaches the set data, the deformation degree of the step 100 can be measured through the displacement detection part.
Further, in order to simulate the situation that the foreign objects are stuck in different positions of the comb teeth 101, the deformation strength of the step 100 is movably arranged along the longitudinal direction in this embodiment, so that the pressure head 24 can correspond to a plurality of detection points of the comb teeth 101 in the longitudinal direction, and can facilitate the detection of a plurality of stress points of the comb teeth 101 of the step 100 in the longitudinal direction and the deformation quantity of the step.
Specifically, in the present embodiment, the level detecting mechanism 2 further includes a first pressure sensor 25, and the first pressure sensor 25 is disposed between the platen 211 and the ram 24 to detect the pressure of the side end surface of the step 100 acting on the ram 24. Of course, in order to cooperate with the first pressure sensor 25 so that the inspector can perform the observation of the load change and the strength and deformation of the step 100, the level detecting mechanism 2 further comprises a signal amplifier, a data acquisition system and measurement analysis software in this embodiment. The specific measurement and detection modes are as follows: the first pressure sensor 25 inputs 10V voltage, monitors the pressure value through the voltage change of the output end, and transmits the pressure value to the signal amplifier, the signal amplifier amplifies the signal and transmits the signal to the acquisition card of the data acquisition system, the acquisition card is connected with a computer, the pressure data is recorded by using measurement analysis software, and the screw 22 is adjusted and loaded according to the measured data, so that the loading of the transverse force of the step 100 is realized.
Specifically, in this embodiment, the pressure detecting mechanism 1 further includes a first driving device, where the first driving device has a first driving portion movably disposed along an up-down direction, and the first driving portion is connected to the pressing portion 11 to drive the pressing portion 11 to move up and down. The step 100 is loaded by means of electric driving, the first driving device may be an electric cylinder, an oil cylinder or an air cylinder, the first driving part is a driving rod of the electric cylinder, the oil cylinder or the air cylinder, and the specific form of the first driving device is not limited in this scheme.
Specifically, referring to fig. 1, in the present embodiment, the pressure detecting mechanism 1 further includes a control device and a second pressure sensor 14, the second pressure sensor 14 is configured to detect a pressure of the pressing portion 11 acting on an upper end surface of the step 100, and the control device is electrically connected to the second pressure sensor 14 and the first driving device, and is configured to control the first driving device to work according to the second pressure sensor 14. The specific measurement and detection modes are as follows: the pressing part 11 is controlled by the control device to move downwards and vertically apply a 3000N force, the pressing part 11 is set as a pressure plate with the area of 0.2m multiplied by 0.3m and the thickness of at least 25mm, the short side of the pressing part 110.2m is parallel to the front edge of the step 100, the long side of 0.3m is perpendicular to the front edge of the step 100, the pressure data are recorded by the measurement and analysis software, and the deformation degree of the step 100 when the force is detected by the displacement detection part.
Further, because the first driving device is electrically driven, the force change is faster at the moment when the first driving device drives the pressing portion 11 to contact with the step 100, so as to avoid the first driving device from receiving an excessive reaction force, in this embodiment, the pressure detecting mechanism 1 further includes an installation portion 12 and a buffer portion 13, the installation portion 12 is fixedly disposed on the first driving portion, and the buffer portion 13 is disposed between the installation portion 12 and the pressing portion 11, so as to provide buffering when the pressing portion 11 contacts with the upper end surface of the step 100. Preferably, the buffer 13 comprises a spring. By providing the buffer portion 13 in this way, the load acting on the step 100 is gradually increased.
Specifically, in this embodiment, the fixing assembly includes a fixing base, a plurality of fixing shafts extending along a horizontal direction are disposed on the fixing base, and the plurality of fixing shafts are disposed at intervals, so that when the step 100 is installed, the step 100 is installed through a rotating shaft mounting hole of the step 100 and a mounting hole on a step chain through a rotating shaft, and each fixing shaft is used for being correspondingly inserted into the rotating shaft mounting hole on the step 100. Because the upper end and the lower end of the step 100 are both provided with the rotating shaft mounting holes, the upper end and the lower end of the step 100 can be fixed through the plurality of fixing shafts, and the turning of the step 100 is avoided. The loading detection by the pressure detection mechanism 1 and the level detection mechanism 2 is facilitated.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. An elevator step detection apparatus, comprising:
a base;
the fixing component is arranged on the seat body and used for fixing the steps;
the pressure detection mechanism comprises a pressing part which is movably arranged along the up-down direction, and the pressing part is used for pressing a step positioned below the pressing part in the downward moving stroke;
the horizontal detection mechanism comprises two side pressure parts which are arranged at intervals in the transverse direction and can be mutually close to and far from the base body in the transverse direction so as to clamp a step between the two side pressure parts in a stroke of mutually close; the method comprises the steps of,
and a displacement detection unit for detecting the amount of deformation of the step in the up-down direction when the pressing unit moves downward and the two side pressing units move closer to each other.
2. The elevator step detecting apparatus according to claim 1, wherein each of the side pressure portions includes a pressing plate extending upward and downward, the pressing plate being provided with a penetrating hole in a lateral direction;
the horizontal detection mechanism further comprises a screw rod and a nut, the screw rod is provided with a fixed end and a locking end, the screw rod penetrates through the penetrating holes of the two pressing plates, the nut is in threaded connection with the locking end of the screw rod, and the nut is used for driving the pressing plates close to the locking end to move towards the pressing plates close to the fixed end in the locking stroke.
3. The elevator step detecting apparatus of claim 2, wherein a plurality of the penetrating holes are provided, the plurality of the penetrating holes being arranged at intervals on a plane in which the pressing plate is located;
the screw rods and the nuts are all provided with a plurality of holes, and the screw rods and the nuts are respectively arranged in one-to-one correspondence with the penetrating holes on the two pressing plates.
4. The elevator step detecting apparatus according to claim 2, wherein the side pressure portion further includes a pressure head provided on the pressure plate, the pressure head being provided on a side of the pressure plate for facing the comb teeth, the pressure head being provided for corresponding to the comb teeth of the steps.
5. The elevator step detecting apparatus according to claim 4, wherein the horizontal detecting mechanism is movably disposed in a longitudinal direction so that the indenter can correspond to a plurality of detecting points where the comb teeth are in the longitudinal direction.
6. The elevator step detection apparatus of claim 4, wherein the level detection mechanism further comprises a first pressure sensor disposed between the pressure plate and the ram to detect the amount of pressure applied by the side end surface of the step to the ram.
7. The elevator step detecting apparatus according to claim 1, wherein the pressure detecting mechanism further comprises a first driving device having a first driving portion movably disposed in an up-down direction, the first driving portion being connected to the pressing portion to drive the pressing portion to move up-down.
8. The elevator step detecting apparatus according to claim 7, wherein the pressure detecting mechanism further comprises a control device and a second pressure sensor for detecting the magnitude of the pressure of the pressing portion acting on the upper end face of the step, the control device being electrically connected to the second pressure sensor and the first driving device for controlling the operation of the first driving device in accordance with the second pressure sensor.
9. The elevator step detecting apparatus according to claim 7, wherein the pressure detecting mechanism further includes a mounting portion fixedly provided to the first driving portion, and a buffer portion provided between the mounting portion and the pressing portion to provide buffering when the pressing portion abuts against an upper end face of the step.
10. The elevator step detecting apparatus of claim 1, wherein the fixing assembly includes a fixing base, a plurality of fixing shafts extending horizontally are provided on the fixing base, the plurality of fixing shafts are arranged at intervals, and each fixing shaft is used for being inserted in corresponding to a shaft mounting hole on the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223053384.2U CN218917057U (en) | 2022-11-16 | 2022-11-16 | Elevator step detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223053384.2U CN218917057U (en) | 2022-11-16 | 2022-11-16 | Elevator step detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218917057U true CN218917057U (en) | 2023-04-25 |
Family
ID=86015715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223053384.2U Withdrawn - After Issue CN218917057U (en) | 2022-11-16 | 2022-11-16 | Elevator step detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218917057U (en) |
-
2022
- 2022-11-16 CN CN202223053384.2U patent/CN218917057U/en not_active Withdrawn - After Issue
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1865724A (en) | Linear rolling element bearing | |
| CN102192877A (en) | Improved clamping mechanism for shear testing apparatus | |
| CN210005195U (en) | rigidity tester | |
| CN108426671B (en) | Calibrating device for brake inspection platform | |
| CN112607551A (en) | Elevator safety gear testing device, testing method and practical training assessment method thereof | |
| CN113340747A (en) | Anchor rod shearing testing device and method | |
| CN218917057U (en) | Elevator step detection equipment | |
| CN210243350U (en) | Experimental device for be used for detecting slice material performance | |
| CN101229891A (en) | Bearing load detecting device for elevator | |
| JP2013217726A (en) | Apparatus and method for measuring ground contact condition of tire | |
| CN115901449A (en) | Elevator step detection equipment | |
| CN211107380U (en) | Brake pedal stroke adjusting device | |
| CN111965049A (en) | Device and method for testing shearing performance of honeycomb structure in tensile loading mode | |
| CN217112023U (en) | Device for detecting concrete reinforcement bonding force | |
| RU48225U1 (en) | BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR A SLIDING EXCENTRED SHORT-TERM DYNAMIC STRETCH | |
| CN113640007B (en) | Parking braking performance testing device | |
| CN211954642U (en) | Steel pipe scaffold fastener mechanical property testing arrangement | |
| CN113772509A (en) | Overload switch detection device for no-load elevator based on hydraulic drive | |
| CN211504520U (en) | Calibrating device for flat plate type brake inspection platform | |
| CN220063652U (en) | Loading device for applying torsion load | |
| CN216050408U (en) | Cabin door pull rod pretightening force measuring device | |
| CN207147735U (en) | Car roof rigidity detection device and car roof stiffness excitations equipment | |
| CN219434502U (en) | Wood structure tooth connection test device | |
| CN110763571A (en) | Detection device for fixed point shear test and application method thereof | |
| CN218120948U (en) | Deformation measuring device of elevator cab guardrail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20230425 Effective date of abandoning: 20230911 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20230425 Effective date of abandoning: 20230911 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |