CN112405433B - Automatic pressing method for pointer of barometer - Google Patents
Automatic pressing method for pointer of barometer Download PDFInfo
- Publication number
- CN112405433B CN112405433B CN202011256741.8A CN202011256741A CN112405433B CN 112405433 B CN112405433 B CN 112405433B CN 202011256741 A CN202011256741 A CN 202011256741A CN 112405433 B CN112405433 B CN 112405433B
- Authority
- CN
- China
- Prior art keywords
- air
- pointer
- locking
- belt wheel
- fixedly connected
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
Abstract
The invention discloses an automatic press mounting method for a pointer of a barometer, belongs to the field of press mounting of the pointer of an instrument, and aims to solve the problems that in the prior art, manual connection of a ventilating threaded pipe for the pointer of the barometer has long time consumption, low mounting efficiency and easy fatigue generation in long-term work, and accidents are caused by air leakage of the connected threaded pipe. The invention is mainly used for automatically press-fitting the pointer of the barometer.
Description
Technical Field
The invention belongs to the field of instrument pointer press mounting, and particularly relates to an automatic press mounting method for a barometer pointer.
Background
The pointer in current motormeter mostly passes through, the pressure equipment forms, connect two trachea connecting pieces on motormeter air pressure pointer's the screwed pipe of ventilating through the manual work, through aerating device to the trachea air feed, gaseous along the trachea enter into motormeter air pressure pointer's the screwed pipe of ventilating, press the pointer pressure equipment on motormeter panel at cooperation pressure head device, this in-process, every instrument pointer of connecting the screwed pipe of ventilating, need consume workman 1-2 minutes time, efficiency is very low, the totality consumes man-hour longer, the automation level is low. And after workers work for a long time, the workers are extremely easy to fatigue, need high concentration of energy, and are neglected slightly, the connecting piece is not installed in place, air leakage can be generated, products are unqualified due to air leakage, and the products are directly scrapped. The air pipe can be damaged after long-time work, and the accident of pipe explosion occurs, so that the automatic pressing device for the pointer of the barometer is developed to avoid the situation, and the automatic pressing device is very suitable for actual needs.
Disclosure of Invention
The invention provides an automatic pressing method for a barometer pointer, aiming at solving the problems that in the prior art, the time consumed by manually connecting a ventilating threaded pipe for the automobile meter pointer is long, the installation efficiency is low, fatigue is easy to generate in long-term work, and accidents are caused by air leakage generated by the connected threaded pipe;
the automatic press-fitting method for the pointer of the barometer is realized based on automatic press-fitting equipment for the pointer of the barometer, and comprises the following steps of:
the press-mounting equipment comprises a supporting mechanism, an air-feeding mechanism, a fixing mechanism, a press-mounting mechanism and a filtering mechanism, wherein the air-feeding mechanism is arranged in the supporting mechanism and is fixedly connected with the supporting mechanism;
the press-fitting equipment further comprises a locking alarm lamp and an air-supply alarm lamp, wherein the locking alarm lamp and the air-supply alarm lamp are oppositely arranged on two sides of the supporting mechanism, the locking alarm lamp is fixedly connected with one side of the supporting mechanism, and the air-supply alarm lamp is fixedly connected with the other side of the supporting mechanism;
the press fitting method comprises the following steps:
the method comprises the following steps: the method comprises the following steps that an air pressure dial plate to be assembled with an air pressure gauge pointer is arranged on the upper surface of a supporting mechanism, the press mounting position of the air pressure dial plate pointer and a press mounting mechanism are located on the same vertical line, and the air pressure dial plate is fixed on the upper surface of the supporting mechanism through a fixing mechanism after two air inlet ends of the air pressure dial plate are respectively arranged corresponding to a locking assembly in an air feeding mechanism;
step two: the output end of the air source is connected with the input end of the filtering mechanism through a pipeline, the output end of the filtering mechanism is connected with one end of the air feeding mechanism through a pipeline, and the air passage is ensured to be smooth;
step three: each locking device in the air feeding mechanism is controlled to be in threaded connection with one air inlet end of the air pressure dial plate, and when the locking devices are tightly connected with the air inlet end of the air pressure dial plate, the locking alarm lamp is turned on;
step four: after the locking alarm lamp is turned on in the third step, starting an air source to give out air, enabling the air to sequentially pass through the filtering mechanism and the air feeding mechanism and enter the instrument air pressure pointer system along the air inlet end of the air pressure dial plate, and turning on the air feeding alarm lamp;
step five: placing a pointer special for the air pressure of the instrument into a pointer shaft, wherein the pointer points to a specified scale;
step six: controlling an external oil way to enable the press-mounting mechanism to move downwards, enabling the press-mounting mechanism to be in contact with the special pointer, and press-mounting the special pointer;
step seven: after the two special pointers are pressed and assembled, observing the rotation corresponding scales of the two pneumatic pointers, checking whether the pressing and assembling are successful, checking whether the stroke of the instrument pneumatic pointer corresponds to the scales, interrupting air supply of an air source after the pressing and assembling are successful, and turning off an air supply alarm lamp (23);
step eight: after the air-supply alarm lamp is turned off in the step seven, controlling each locking device in the air-supply mechanism and one air inlet end thread of the air pressure dial plate to be loosened until the locking device is separated from the air inlet end of the air pressure dial plate;
step nine: step eight, after the locking device is separated from one air inlet end of the air pressure dial, loosening the fixing mechanism, and taking out the instrument with the special pointer to complete the whole process operation;
furthermore, the supporting mechanism comprises a bottom plate, an upper air frame and a pressure head support, the upper air frame is arranged on the bottom plate and is fixedly connected with the bottom plate, the pressure head support is of an L-shaped structure and is arranged on the rear side of the upper air frame, one end of the pressure head support is fixedly connected with the bottom plate, the other end of the pressure head support is arranged right above the upper air frame, the upper air mechanism is arranged in the upper air frame and is fixedly connected with the bottom plate, the fixing mechanism is fixedly connected onto the upper surface of the upper air frame, the press-mounting mechanism is fixedly connected onto one end, close to the upper surface of the upper air frame, of the pressure head support, and the press-mounting mechanism is arranged right above the upper surface of the upper air frame;
in the first step, an air pressure dial plate of a pointer of the air pressure gauge to be assembled is arranged on the upper surface of the upper air frame;
furthermore, the air charging mechanism comprises two air charging devices, a motor supporting plate and a synchronous platform, wherein the two air charging devices, the motor supporting plate and the synchronous platform are all arranged in the air charging frame, the two air charging devices are symmetrically arranged relative to the central line of the motor supporting plate in the length direction, each air charging device is fixedly connected with the bottom plate, the synchronous platform is arranged at the upper parts of the two air charging devices, each air charging device is fixedly connected with the synchronous platform, and the air outlet end of each air charging device is arranged corresponding to one air inlet end of the air pressure meter;
further, the upper pneumatic device comprises a trachea protective sleeve, a trachea, an air nozzle, a locking assembly, a motor, a belt wheel, a guide shaft support, a spring, an optical axis and an optical axis sleeve, wherein the guide shaft support is arranged on one side of a motor support plate and is fixedly connected with a bottom plate, one end of the optical axis is inserted on the guide shaft support, the optical axis sleeve is sleeved on the other end of the optical axis and is slidably connected with the optical axis, the optical axis sleeve is arranged on a synchronous platform, the spring is arranged between the optical axis sleeve and the guide shaft support and is sleeved on the optical axis, the motor is axially arranged on the motor support plate, a shell of the motor is fixedly connected with the motor support plate, the output shaft of the motor is sleeved with the belt wheel, the belt wheel is fixedly connected with the output shaft of the motor, the belt wheel is arranged on the synchronous platform and is rotatably connected with the synchronous platform, the trachea protective sleeve is sleeved on the trachea, one end of the air pipe is connected with an air source through a pipeline, the other end of the air pipe is arranged in the locking assembly, the other end of the air pipe is tightly connected with the locking assembly, the locking assembly is arranged on the synchronous platform and is rotationally connected with the synchronous platform, the locking assembly is in transmission connection with the belt wheel through a belt, the locking assembly is arranged corresponding to one air inlet end of the barometer, and the optical axis, the motor and the air pipe are sequentially arranged from outside to inside;
furthermore, the locking assembly comprises an air nozzle, a special belt pulley, an elastic check ring and a locking nut, the locking nut is arranged at the top end of the special belt pulley and is fixedly connected with the special belt pulley, the air nozzle is arranged in the locking nut, the bottom end of the air nozzle penetrates through the locking nut and is arranged in the special belt pulley, the bottom end of the air nozzle is fixedly connected with the other end of the air pipe, the special belt pulley is arranged on the synchronous platform and is rotatably connected with the synchronous platform, the elastic check ring is arranged below the synchronous platform and is sleeved at the lower part of the special belt pulley, and the elastic check ring is embedded on the outer wall of the special belt pulley;
in the third step, two motors are synchronously started, each motor transmits torque to a special belt wheel in the locking assembly through the belt wheel and a belt, the special belt wheel drives a locking nut on the upper part of the special belt wheel to be in threaded connection with one air inlet end of the air pressure dial, and after the locking nut is connected and fastened with one air inlet end of the air pressure dial, the locking alarm lamp is turned on;
step eight, synchronously starting two motors to reversely rotate, wherein each motor transmits torque to a special belt wheel in the locking assembly through the belt wheel and a belt, and the special belt wheel drives a locking nut on the upper part of the special belt wheel to be loosened with a thread at an air inlet end of the air pressure dial plate until the locking nut is separated from the air inlet end of the air pressure dial plate;
further: the fixing mechanism comprises two rapid clamps, the two rapid clamps are arranged on the upper surface of the upper air frame and are oppositely arranged along the central line of the length direction of the upper air frame, and the base of each rapid clamp is fixedly connected with one wide side beam on the upper surface of the upper air frame;
in the first step, after two air inlet ends of the pressure dial plate are respectively arranged corresponding to one locking assembly, the air pressure dial plate is fixed on the upper surface of the upper air frame through two quick clamps;
furthermore, the press-fitting mechanism comprises a hydraulic cylinder, an adjusting screw rod, a pressure head and two second locking nuts, the hydraulic cylinder is inversely arranged at one end, close to the upper air frame, of the pressure head support, a piston shaft of the hydraulic cylinder penetrates through the pressure head support and is arranged towards the upper air frame, one end of the piston shaft is detachably connected with the adjusting screw rod through one second locking nut, and the other end of the adjusting screw rod is detachably connected with the pressure head through the other second locking nut;
in the first step, the press mounting position of the pointer of the air pressure dial plate and a pressure head are ensured to be positioned on the same vertical line;
in the sixth step: controlling an external oil circuit to enable a rodless cavity of the hydraulic cylinder to feed oil, enabling a rod cavity to move out, enabling a piston shaft of the hydraulic cylinder to move downwards, driving an adjusting screw rod and a pressure head to move downwards, enabling the pressure head to be in contact with the special pointer, and carrying out press mounting on the special pointer;
in the ninth step, after the locking nut is separated from one air inlet end of the air pressure dial in the eighth step, the quick clamp is loosened, and the instrument provided with the special pointer is taken out to complete the operation of the whole process;
furthermore, the press mounting equipment further comprises a filtering mechanism, the filtering mechanism comprises two filters, the two filters are symmetrically arranged along the axis of the pressure head, two sides of the pressure head support are oppositely provided with a connecting plate, each connecting plate is fixedly connected with the pressure head support, each filter is fixedly connected to the front surface of one connecting plate, the input end of each filter is connected with the output end of the air source through a pipeline, and the output end of each filter is connected with one end of the air pipe through a pipeline;
in the second step, the output end of the air source is connected with the input end of the filter through a pipeline, the output end of the filter is connected with one end of the air pipe through a pipeline, and the air passage is ensured to be smooth;
in the fourth step, starting a gas source to give out gas, and enabling the gas to enter the instrument air pressure pointer system along the gas inlet end of the air pressure dial plate after passing through the filter, the gas pipe and the gas nozzle in sequence;
compared with the prior art, the invention has the following beneficial effects:
the invention provides an automatic press mounting device for a pointer of a barometer and a using method thereof, wherein a belt wheel is driven to rotate by a motor, torque is transmitted to a locking component by a belt, a nut in the locking component can be screwed on a vent threaded pipe of the pointer of the barometer, manual screwing is replaced by automatic screwing, the connecting time of an air pipe and the vent threaded pipe is greatly reduced, the working efficiency is at least improved by 70%, meanwhile, when the locking device provided by the invention is used for connecting the air pipe and the vent threaded pipe, the connecting accuracy is also greatly improved, the occurrence of air leakage after connection is effectively avoided, the safety in work is greatly improved, meanwhile, an air source can directly supply air to the barometer after the air pipe is connected with the vent threaded pipe, and the pointer placed in an accurate position is pressed on an instrument panel by the press mounting device under the drive of a hydraulic cylinder, the whole press mounting process is completed;
the invention has higher automation degree, the whole pressing process can be completed by a worker only needing to turn on the main switch, put on the instrument and lightly press the starting switch, the worker is easy to operate, the requirement on the experience of the worker is very low, the workload and the strength of the worker are greatly reduced, the whole pressing process can be accurately completed within one minute, the working time is saved, and the production efficiency is improved;
1. according to the invention, the locking assembly in the air charging device is automatically connected with the thread port of the barometer, so that the connection accuracy is improved, the connection time is reduced, and the situations of air leakage and air leakage cannot be generated;
2. the problem of tube explosion is avoided through the air tube protective sleeve in the air feeding device;
3. the automatic press fitting equipment for the pointer of the barometer provided by the invention has the advantages that the manual operation is less, and the labor cost is reduced.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic view of the connection between the air tube, nozzle and locking device of the present invention;
in the figure, a bottom plate 1, an upper air frame 2, a protective sleeve 3, an air pipe 4, an air nozzle 5, a special belt wheel 6, a circlip 7, a first locking nut 8, a motor 9, a belt wheel 10, a guide shaft support 11, a spring 12, an optical shaft 13, an optical shaft sleeve 14, a synchronous platform 15, a quick clamp 16, a filter 17, a hydraulic cylinder 18, a second locking nut 19, an adjusting screw rod 20, a pressure head 21, a locking alarm lamp 22, an upper air alarm lamp 23 and a pressure head support 24 are arranged.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and provides automatic barometer pointer press-fitting equipment, which comprises a supporting mechanism, an air feeding mechanism, a fixing mechanism and a press-fitting mechanism, wherein the air feeding mechanism is arranged in the supporting mechanism and is fixedly connected with the supporting mechanism, the fixing mechanism is arranged on the supporting mechanism and is fixedly connected with the supporting mechanism, the press-fitting mechanism is arranged on the supporting mechanism and is fixedly connected with the supporting mechanism, and the press-fitting mechanism, the fixing mechanism and the air feeding mechanism are arranged from top to bottom.
The automatic pressure equipment of barometer pointer that provides in this embodiment has supporting mechanism, goes up gas mechanism, fixed establishment and pressure equipment mechanism, has realized the automation of panel board pointer pressure equipment process, makes whole pressing process, practices thrift man-hour, has improved production efficiency, has reduced the cost of labor simultaneously, still is equipped with the controller in this equipment, and controller and motor 9, outside air supply, the external oil feeding system of pneumatic cylinder 18 are the electricity and are connected.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1, and the present embodiment is further limited to the support mechanism described in the first embodiment, and in the present embodiment, the supporting mechanism comprises a bottom plate 1, an upper air frame 2 and a pressure head support 24, the upper air frame 2 is arranged on the bottom plate 1, the upper air frame 2 is fixedly connected with the bottom plate 1, the pressure head support 24 is of an L-shaped structure, the pressure head support 24 is arranged at the rear side of the upper air frame 2, one end of the pressure head support 24 is fixedly connected with the bottom plate 1, the other end of the pressure head support 24 is arranged right above the upper air frame 2, the upper air mechanism is arranged in the upper air frame 2, the upper air mechanism is fixedly connected with the bottom plate 1, the fixing mechanism is fixedly connected to the upper surface of the upper air frame 2, the press-fitting mechanism is fixedly connected to one end, close to the upper surface of the upper air frame 2, of the pressure head support 24, and the press-fitting mechanism is arranged right above the upper surface of the upper air frame 2. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the supporting mechanism mainly plays a supporting role, so that the press-fitting mechanism, the fixing mechanism and the air-feeding mechanism can be arranged from top to bottom, and the upper surface of the air-feeding frame 2 in the supporting mechanism is a supporting table top of the instrument panel in the process of press-fitting the pointer, and is also a main working plane.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1, and the present embodiment further defines the air supply mechanism according to the first embodiment, and in the present embodiment, the air supply mechanism includes two air supply devices, a motor support plate and a synchronization platform 15, the two air supply devices, the motor support plate and the synchronization platform 15 are all disposed in the air supply frame 2, the two air supply devices are symmetrically disposed with respect to a center line of the motor support plate in a length direction, and each air supply device is fixedly connected to the bottom plate 1, the synchronization platform 15 is disposed on an upper portion of the two air supply devices, and each air supply device is fixedly connected to the synchronization platform 15, and an air outlet end of each air supply device is disposed corresponding to an air inlet end of the barometer. The other components and the connection mode are the same as those of the second embodiment.
In this embodiment, the synchronous platform 15 is used for assisting two air supply devices to work synchronously, the air supply mechanism has the function of accurately and sufficiently transmitting the air supplied by the air source to the air inlet system of the instrument panel, and because two air inlet pipelines are arranged in a common instrument panel, the air supply mechanism comprises two air supply devices, and each air supply device independently supplies air to one air inlet pipeline in the instrument panel, so that the air supply accuracy and the air tightness are ensured.
The fourth concrete implementation mode: referring to fig. 1, the present embodiment is described, which further defines the inflation mechanism described in the third embodiment, in the present embodiment, the inflation device includes an air tube protection sleeve 3, an air tube 4, a locking assembly, a motor 9, a pulley 10, a guide shaft support 11, a spring 12, an optical axis 13 and an optical axis sleeve 14, the guide shaft support 11 is disposed on one side of the motor support plate, the guide shaft support 11 is fixedly connected with the base plate 1, one end of the optical axis 13 is inserted into the guide shaft support 11, the optical axis sleeve 14 is sleeved on the other end of the optical axis 13, the optical axis sleeve 14 is slidably connected with the optical axis 13, the optical axis sleeve 14 is mounted on the synchronization platform 15, the spring 12 is disposed between the optical axis sleeve 14 and the guide shaft support 11, the spring 12 is sleeved on the optical axis 13, the motor 9 is disposed on the motor support plate along the axial direction, and the housing of the motor 9 is fixedly connected with the motor support plate, the cover is equipped with band pulley 10 on motor 9's the output shaft, band pulley 10 and motor 9's output shaft fixed connection, band pulley 10 sets up on synchronous platform 15, and band pulley 10 rotates with synchronous platform 15 to be connected, 3 suits of trachea protective sheath are on trachea 4, trachea 4's one end passes through the pipeline with the air supply and links to each other, trachea 4's the other end sets up in locking Assembly, and trachea 4's the other end and locking Assembly fastening connection, locking Assembly sets up on synchronous platform 15, and locking Assembly rotates with synchronous platform 15 to be connected, locking Assembly passes through belt transmission with band pulley 10 and is connected, locking Assembly corresponds the setting with an inlet end of barometer, optical axis 13, motor 9 and trachea 4 are by outer to interior setting gradually. Other components and connection modes are the same as those of the third embodiment.
In this embodiment, the air charging device can drive the locking component to automatically connect with the air inlet threaded pipe in the instrument panel through the motor 9, the motor 9 is a forward and reverse rotation motor, so as to facilitate forward and reverse rotation of the locking component and facilitate tightening and loosening of the locking component and the air inlet threaded pipe, a bearing is arranged between the belt wheel 10 and the synchronous platform 15, the inner ring of the bearing is connected with the lower strand of the belt wheel 10, the outer ring of the bearing is connected with the synchronous platform 15, during operation, the motor 9 rotates forward to drive the locking component to automatically connect with the air inlet threaded pipe in the instrument panel, the synchronous platform 15 can drive the locking components in the two air charging devices to synchronously move, meanwhile, the synchronous platform 15 can ascend to achieve a tightening effect, the optical axis 13 can play a guiding role, the optical axis sleeve 14 moves upwards on the optical axis 13 and slides, after operation, the motor 9 rotates reversely to drive the locking component to automatically separate from the air inlet threaded pipe in the instrument panel, synchronous platform 15 can descend, and spring 12 has played the effect of buffering this moment, and when utilizing the air feeder air feed, the gas fills the instantaneous impulse of trachea 4 and can be very big, and the pipe wall of trachea 4 is thinner leads to the fact easily to burst, overlaps on the outer wall of trachea 4 and establishes trachea protective sheath 3, can effectively avoid the problem of bursting.
The fifth concrete implementation mode is as follows: referring to fig. 1, this embodiment is described further defining a nut lock assembly according to a fourth embodiment, which, in this embodiment, the locking component comprises an air tap 5, a special belt wheel 6, an elastic retainer ring 7 and a first locking nut 8, the first locking nut 8 is arranged at the top end of the special belt wheel 6, and a first locking nut 8 is fixedly connected with a special belt wheel 6, an air tap 5 is arranged in the first locking nut 8, the bottom end of the air tap 5 is arranged in the special belt wheel 6 through a first locking nut 8, the bottom end of the air tap 5 is fixedly connected with the other end of the air pipe 4, the special belt wheel 6 is arranged on the synchronous platform 15, the special belt wheel 6 is rotatably connected with the synchronous platform 15, the elastic check ring 7 is arranged below the synchronous platform 15, the elastic check ring 7 is sleeved on the lower portion of the special belt wheel 6, and the elastic check ring 7 is embedded on the outer wall of the special belt wheel 6. The other components and the connection mode are the same as those of the fourth embodiment.
In the embodiment, compared with the common belt wheel, the special belt wheel 6 is additionally provided with a nut placing hole on the top, the hole wall is also provided with a locking hole, a first locking nut 8 is fixed at the top of the special belt wheel 6 through a screw, a bearing sleeve mounting section is added at the bottom of the special belt wheel 6 relative to the common belt wheel, the self-lubricating bearing is used for sleeving a bearing and is convenient to be rotatably connected with the synchronous platform 15, the inner ring of the bearing is sleeved on the bearing sleeve section at the lower part of the special belt wheel 6, the outer ring of the bearing is fixedly connected with the synchronous platform 15, the bearing used in the mode is a self-lubricating bearing, lubricating oil is filled in the self-lubricating bearing, the lubricating effect of the self-lubricating bearing in work is ensured, but the self-lubricating bearing is horizontally arranged in the application, lubricating oil can flow out under the action of gravity, so be equipped with circlip 7 in self-lubricating bearing's below, circlip 7 inlays the dress on the outer wall of special band pulley 6, effectively prevents that the inside lubricating oil of self-lubricating bearing from revealing.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 and 3, and is further limited to the fixing mechanism described in the third embodiment, in the present embodiment, the fixing mechanism includes two quick clamps 16, the two quick clamps 16 are both disposed on the upper surface of the upper air frame 2, the two quick clamps 16 are disposed opposite to each other along the center line of the length direction of the upper air frame 2, and the base of each quick clamp 16 is fixedly connected to one wide side beam on the upper surface of the upper air frame 2. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the quick clamp 16 is used to clamp the instrument panel, and position and clamp the instrument panel during operation.
The seventh embodiment: the present embodiment is described with reference to fig. 3, and is further limited to the press-fitting mechanism described in the third embodiment, in the present embodiment, the press-fitting mechanism includes a hydraulic cylinder 18, an adjusting screw 20, a press head 21, and two second lock nuts 19, the hydraulic cylinder 18 is inverted on one end of a press head bracket 24 close to the upper air frame 2, a piston shaft of the hydraulic cylinder 18 passes through the press head bracket 24 and is disposed toward the upper air frame 2, one end of the piston shaft is detachably connected to the adjusting screw 20 through one second lock nut 19, and the other end of the adjusting screw 20 is detachably connected to the press head 21 through the other second lock nut 19. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the end of the piston rod in the hydraulic cylinder 18 is processed with a blind hole, one end of the adjusting screw 20 is arranged in the blind hole and detachably connected through a second locking nut 19, the total length of the pressing end of the press-fitting mechanism is changed by adjusting the length of the adjusting screw 20 in the blind hole, the distance between the pressing head and the end of the piston rod in the hydraulic cylinder 18 can be effectively adjusted, the detachable connection facilitates the replacement of parts, and the hydraulic cylinder has good maintainability.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1, and is further limited to the press-fitting apparatus described in the fifth embodiment, in the present embodiment, the press-fitting apparatus further includes a filtering mechanism, the filtering mechanism includes two filters 17, the two filters 17 are symmetrically disposed along the axis of the pressure head 21, two sides of the pressure head support 24 are oppositely provided with a connecting plate, each connecting plate is fixedly connected to the pressure head support 24, each filter 17 is fixedly connected to the front surface of one connecting plate, the input end of the filter 17 is connected to the air supply output end through a pipeline, and the input end of the filter 17 is connected to one end of the air pipe 4 through a pipeline. The other components and the connection mode are the same as the fifth embodiment mode.
In this embodiment, filter 17 is arranged in the confession of filtering the air supply and goes out gas to transmit trachea 4 after purifying gas, filter 17's output passes through flexible transparent hose with the one end of trachea 4 and links to each other, can contain impurity in the confession in the air supply is given vent to anger, if in the air intake system that directly enters into the panel board through last gas device of not straining, accuracy when can be to later stage pressure equipment pointer causes the influence, for example pointer and scale are to inaccurate.
The specific implementation method nine: the present embodiment is described with reference to fig. 4, and is further limited to the press-fitting apparatus described in the sixth embodiment, and in the present embodiment, the press-fitting apparatus further includes a locking alarm lamp 22 and an air-supply alarm lamp 23, the locking alarm lamp 22 and the air-supply alarm lamp 23 are oppositely disposed on two sides of the indenter bracket 24, the locking alarm lamp 22 is fixedly connected to one side of the indenter bracket 24, and the air-supply alarm lamp 23 is fixedly connected to the other side of the indenter bracket 24. Other components and connection modes are the same as those of the sixth embodiment.
In the embodiment, in order to ensure that an operator can accurately judge whether each step in the work is performed or what state the step is performed, a locking alarm lamp 22 and an air-supply alarm lamp 23 are particularly added, two items are very important in the early stage process of press-fitting a pointer, but the two items are not directly judged by human, the first item is whether a locking component and an instrument air-inlet threaded pipe are screwed, the second item is whether an air-supply device accurately charges air to an air-inlet system of an instrument panel, the locking alarm lamp 22 is electrically connected with a distance sensor, the distance sensor is arranged on the upper surface of a synchronous platform 15, the position where the locking component is connected with the instrument air-inlet threaded pipe is judged by judging the distance between the synchronous platform 15 and the top of an instrument air-inlet frame 2, after the locking component and the instrument air-inlet threaded pipe are screwed, the distance between the synchronous platform 15 and the top of the instrument air-inlet frame 2 is shortened and reaches a fixed value, at this moment, the locking alarm lamp 22 is turned on, the end part of the air tap 5 is provided with the pressure sensor, the pressure sensor is electrically connected with the air supply alarm lamp 23, the pressure can be changed when gas smoothly enters the instrument panel connecting pipeline through the air tap 5, the air supply alarm lamp 23 is turned on at the moment, the locking alarm lamp 22 is red, and the air supply alarm lamp 23 is green in order to distinguish the locking alarm lamp 22 from the air supply alarm lamp 23.
The detailed implementation mode is ten: the embodiment is described with reference to fig. 1 to 3, and provides a press-fitting method of automatic press-fitting equipment for a barometer pointer, which is realized by the following steps:
the method comprises the following steps: arranging a barometer dial to be assembled with a barometer pointer on the upper surface of the upper air frame 2, ensuring that the press-fitting position of the barometer dial pointer and the pressure head 21 are positioned on the same vertical line, and fixing the barometer dial on the upper surface of the upper air frame 2 through two quick clamps 16 after two air inlet ends of the barometer dial are respectively arranged corresponding to one locking component;
step two: the output end of the air source is connected with the input end of the filter 17 through a pipeline, the output end of the filter 17 is connected with one end of the air pipe 4 through a pipeline, and the air passage is ensured to be smooth;
step three: the two motors 9 are synchronously started, each motor 9 transmits torque to a special belt wheel 6 in the locking assembly through a belt wheel 10 and a belt, the special belt wheel 6 drives a first locking nut 8 on the upper portion of the special belt wheel to be in threaded connection with one air inlet end of the air pressure dial, and after the first locking nut 8 is connected and fastened with one air inlet end of the air pressure dial, the locking alarm lamp 22 is turned on;
step four: after the locking alarm lamp 22 is turned on in the third step, starting an air source to give out air, enabling the air to sequentially pass through the filter 17, the air pipe 4 and the air nozzle 5 and enter the instrument air pressure pointer system along the air inlet end of the air pressure dial, and then turning on the air alarm lamp 23;
step five: placing a pointer special for the air pressure of the instrument into a pointer shaft, wherein the pointer points to a specified scale;
step six: controlling an external oil path to enable a rodless cavity of the hydraulic cylinder 18 to feed oil and a rod cavity to move out, enabling a piston shaft of the hydraulic cylinder 18 to move downwards, driving the adjusting screw rod 20 and the pressure head 21 to move downwards, enabling the pressure head 21 to be in contact with the special pointer, and carrying out press mounting on the special pointer;
step seven: after the two special pointers are pressed and mounted, observing the rotation corresponding scales of the two pneumatic pointers, checking whether the pressing and mounting are successful, checking whether the stroke of the pneumatic pointer of the instrument corresponds to the scales, interrupting the air supply of the air source after the pressing and mounting are successful, and turning off the air supply alarm lamp 23;
step eight: after the air-supply alarm lamp 23 is turned off in the step seven, the two motors 9 are synchronously started to rotate reversely, each motor 9 transmits the torque to the special belt wheel 6 in the locking assembly through the belt wheel 10 and the belt, and the special belt wheel 6 drives the first locking nut 8 on the upper part of the special belt wheel to be loosened with the thread of one air inlet end of the air pressure dial plate until the first locking nut 8 is separated from one air inlet end of the air pressure dial plate;
step nine: and in the step eight, after the locking nut 8 is separated from one air inlet end of the air pressure dial, the quick clamp 16 is loosened, and the instrument provided with the special pointer is taken out to complete the operation of the whole process.
Claims (5)
1. The automatic pressing method for the pointer of the barometer is characterized by being realized based on automatic pressing equipment for the pointer of the barometer:
the press-mounting equipment comprises a supporting mechanism, an air-feeding mechanism, a fixing mechanism, a press-mounting mechanism and a filtering mechanism, wherein the air-feeding mechanism is arranged in the supporting mechanism and is fixedly connected with the supporting mechanism;
the air charging mechanism comprises two air charging devices, a motor supporting plate and a synchronous platform (15), wherein the two air charging devices, the motor supporting plate and the synchronous platform (15) are all arranged in an air charging frame (2), the two air charging devices are symmetrically arranged relative to the central line of the motor supporting plate in the length direction, each air charging device is fixedly connected with the bottom plate (1), the synchronous platform (15) is arranged at the upper parts of the two air charging devices, each air charging device is fixedly connected with the synchronous platform (15), and the air outlet end of each air charging device is arranged corresponding to one air inlet end of the air pressure meter;
the air charging device comprises an air pipe protective sleeve (3), an air pipe (4), a locking assembly, a motor (9), a belt wheel (10), a guide shaft support (11), a spring (12), an optical axis (13) and an optical axis sleeve (14), wherein the guide shaft support (11) is arranged on one side of the motor supporting plate, the guide shaft support (11) is fixedly connected with the bottom plate (1), one end of the optical axis (13) is inserted on the guide shaft support (11), the optical axis sleeve (14) is sleeved on the other end of the optical axis (13), the optical axis sleeve (14) is in sliding connection with the optical axis (13), the optical axis sleeve (14) is arranged on a synchronous platform (15), the spring (12) is arranged between the optical axis sleeve (14) and the guide shaft support (11), the spring (12) is sleeved on the optical axis (13), the motor (9) is arranged on the motor supporting plate along the axial direction, and a shell of the motor (9) is fixedly connected with the motor supporting plate, the output shaft of the motor (9) is sleeved with a belt wheel (10), the belt wheel (10) is fixedly connected with the output shaft of the motor (9), the belt wheel (10) is arranged on a synchronous platform (15), the belt wheel (10) is rotatably connected with the synchronous platform (15), a gas pipe protective sleeve (3) is sleeved on a gas pipe (4), one end of the gas pipe (4) is connected with a gas source through a pipeline, the other end of the gas pipe (4) is arranged in a locking assembly, the other end of the gas pipe (4) is fixedly connected with the locking assembly, the locking assembly is arranged on the synchronous platform (15), the locking assembly is rotatably connected with the synchronous platform (15), the locking assembly is in transmission connection with the belt wheel (10) through a belt, the locking assembly is correspondingly arranged with one gas inlet end of a gas pressure gauge, and the optical axis (13), the motor (9) and the gas pipe (4) are sequentially arranged from outside to inside;
the locking assembly comprises an air tap (5), a special belt wheel (6), an elastic retainer ring (7) and a first locking nut (8), the first locking nut (8) is arranged at the top end of the special belt wheel (6), a first locking nut (8) is fixedly connected with the special belt wheel (6), an air tap (5) is arranged in the first locking nut (8), the bottom end of the air tap (5) passes through a locking nut (8) and is arranged in the special belt wheel (6), the bottom end of the air tap (5) is fixedly connected with the other end of the air pipe (4), the special belt wheel (6) is arranged on the synchronous platform (15), the special belt wheel (6) is rotatably connected with the synchronous platform (15), the elastic check ring (7) is arranged below the synchronous platform (15), the elastic check ring (7) is sleeved on the lower part of the special belt wheel (6), and the elastic check ring (7) is embedded on the outer wall of the special belt wheel (6);
the press-fitting equipment further comprises a locking alarm lamp (22) and an air-supply alarm lamp (23), wherein the locking alarm lamp (22) and the air-supply alarm lamp (23) are oppositely arranged on two sides of the supporting mechanism, the locking alarm lamp (22) is fixedly connected with one side of the supporting mechanism, and the air-supply alarm lamp (23) is fixedly connected with the other side of the supporting mechanism;
the press fitting method comprises the following steps:
the method comprises the following steps: the method comprises the following steps that an air pressure dial plate to be assembled with an air pressure gauge pointer is arranged on the upper surface of a supporting mechanism, the press mounting position of the air pressure dial plate pointer and a press mounting mechanism are located on the same vertical line, and the air pressure dial plate is fixed on the upper surface of the supporting mechanism through a fixing mechanism after two air inlet ends of the air pressure dial plate are respectively arranged corresponding to a locking assembly in an air feeding mechanism;
step two: the output end of the air source is connected with the input end of the filtering mechanism through a pipeline, the output end of the filtering mechanism is connected with one end of the air feeding mechanism through a pipeline, and the air path is ensured to be smooth;
step three: each locking device in the air feeding mechanism is controlled to be in threaded connection with one air inlet end of the air pressure dial, and after the locking devices are tightly connected with the air inlet end of the air pressure dial, the locking alarm lamp (22) is turned on;
in the third step, two motors (9) are synchronously started, each motor (9) transmits torque to a special belt wheel (6) in the locking assembly through a belt wheel (10) and a belt, the special belt wheel (6) drives a first locking nut (8) on the upper part of the special belt wheel to be in threaded connection with one air inlet end of the air pressure dial, and after the first locking nut (8) is connected and fastened with one air inlet end of the air pressure dial, a locking alarm lamp (22) is turned on;
step four: after the locking alarm lamp (22) is turned on in the third step, starting an air source to give out air, enabling the air to sequentially pass through the filtering mechanism and the air feeding mechanism and enter the instrument air pressure pointer system along the air inlet end of the air pressure dial, and turning on the air feeding alarm lamp (23);
step five: placing a pointer special for the air pressure of the instrument into a pointer shaft, wherein the pointer points to a specified scale;
step six: controlling an external oil way to enable a press-mounting mechanism to move downwards, enabling the press-mounting mechanism to be in contact with the special pointer, and press-mounting the special pointer;
step seven: after the two special pointers are pressed and assembled, observing the rotation corresponding scales of the two pneumatic pointers, checking whether the pressing and assembling are successful, checking whether the stroke of the instrument pneumatic pointer corresponds to the scales, interrupting air supply of an air source after the pressing and assembling are successful, and turning off an air supply alarm lamp (23);
step eight: after the air-supply alarm lamp (23) is turned off in the step seven, controlling each locking device in the air supply mechanism and one air inlet end thread of the air pressure dial plate to be loosened until the locking device is separated from the air inlet end of the air pressure dial plate;
step eight, synchronously starting the two motors (9) to rotate reversely, transmitting the torque to a special belt wheel (6) in the locking assembly by each motor (9) through a belt wheel (10) and a belt, driving a first locking nut (8) on the upper part of the special belt wheel (6) to be loosened with a thread at one air inlet end of the air pressure dial plate until the first locking nut (8) is separated from one air inlet end of the air pressure dial plate;
step nine: and step eight, after the locking device is separated from one air inlet end of the air pressure dial, loosening the fixing mechanism, and taking out the instrument with the special pointer to finish the whole process operation.
2. The automatic press fitting method for the pointer of the barometer according to claim 1, wherein the method comprises the following steps: the supporting mechanism comprises a bottom plate (1), an upper air frame (2) and a pressure head support (24), the upper air frame (2) is arranged on the bottom plate (1), the upper air frame (2) is fixedly connected with the bottom plate (1), the pressure head support (24) is of an L-shaped structure, the pressure head support (24) is arranged at the rear side of the upper air frame (2), one end of the pressure head support (24) is fixedly connected with the bottom plate (1), the other end of the pressure head support (24) is arranged right above the upper air frame (2), the upper air mechanism is arranged in the upper air frame (2), the upper air mechanism is fixedly connected with the bottom plate (1), the fixing mechanism is fixedly connected to the upper surface of the upper air frame (2), the press-fitting mechanism is fixedly connected to one end, close to the upper surface of the upper air frame (2), of the pressure head support (24), and the press-fitting mechanism is arranged right above the upper surface of the upper air frame (2);
in the first step, an air pressure dial plate to be provided with an air pressure meter pointer is arranged on the upper surface of the upper air frame (2).
3. An automatic press-fitting method for a barometer pointer as claimed in claim 2, wherein: the fixing mechanism comprises two rapid clamps (16), the two rapid clamps (16) are arranged on the upper surface of the upper air frame (2), the two rapid clamps (16) are oppositely arranged along the central line of the length direction of the upper air frame (2), and the base of each rapid clamp (16) is fixedly connected with one wide side beam on the upper surface of the upper air frame (2);
in the first step, after two air inlet ends of the pressure dial plate are respectively arranged corresponding to one locking component, the air pressure dial plate is fixed on the upper surface of the upper air frame (2) through two quick clamps (16).
4. The automatic press fitting method for the pointer of the barometer, as claimed in claim 3, wherein the method comprises the following steps: the press-fitting mechanism comprises a hydraulic cylinder (18), an adjusting screw rod (20), a pressure head (21) and two second locking nuts (19), the hydraulic cylinder (18) is arranged on one end, close to the upper air frame (2), of a pressure head support (24) in an inverted mode, a piston shaft of the hydraulic cylinder (18) penetrates through the pressure head support (24) and is arranged towards the upper air frame (2), one end of the piston shaft is detachably connected with the adjusting screw rod (20) through one second locking nut (19), and the other end of the adjusting screw rod (20) is detachably connected with the pressure head (21) through the other second locking nut (19);
in the first step, the press mounting position of the pointer of the air pressure dial plate and a pressure head (21) are ensured to be positioned on the same vertical line;
in the sixth step: controlling an external oil circuit to enable a rodless cavity of the hydraulic cylinder (18) to feed oil and a rod cavity to move out, enabling a piston shaft of the hydraulic cylinder (18) to move downwards, driving the adjusting screw rod (20) and the pressure head (21) to move downwards, enabling the pressure head (21) to be in contact with the special pointer, and carrying out press mounting on the special pointer;
in the ninth step, after the locking nut (8) in the eighth step is separated from one air inlet end of the air pressure dial, the quick clamp (16) is loosened, and the instrument provided with the special pointer is taken out, so that the whole process operation is completed.
5. The automatic press fitting method for the pointer of the barometer, as recited in claim 4, wherein the method comprises the following steps: the filter mechanism comprises two filters (17), the two filters (17) are symmetrically arranged along the axis of the pressure head (21), two sides of the pressure head support (24) are oppositely provided with a connecting plate, each connecting plate is fixedly connected with the pressure head support (24), each filter (17) is fixedly connected to the front surface of one connecting plate, the input end of each filter (17) is connected with the output end of an air source through a pipeline, and the output end of each filter (17) is connected with one end of the air pipe (4) through a pipeline;
in the second step, the output end of the air source is connected with the input end of the filter (17) through a pipeline, the output end of the filter (17) is connected with one end of the air pipe (4) through a pipeline, and the air passage is ensured to be unblocked;
and in the fourth step, starting an air source to give off air, and enabling the air to enter the instrument air pressure pointer system along the air inlet end of the air pressure dial in sequence through the filter (17), the air pipe (4) and the air nozzle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256741.8A CN112405433B (en) | 2020-11-11 | 2020-11-11 | Automatic pressing method for pointer of barometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256741.8A CN112405433B (en) | 2020-11-11 | 2020-11-11 | Automatic pressing method for pointer of barometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112405433A CN112405433A (en) | 2021-02-26 |
| CN112405433B true CN112405433B (en) | 2022-09-09 |
Family
ID=74781626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011256741.8A Active CN112405433B (en) | 2020-11-11 | 2020-11-11 | Automatic pressing method for pointer of barometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112405433B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227215A (en) * | 2021-12-14 | 2022-03-25 | 航天科技控股集团股份有限公司 | Automatic installation method of small automobile instrument dial plate |
| CN114147457A (en) * | 2021-12-14 | 2022-03-08 | 航天科技控股集团股份有限公司 | Small-size motormeter dial plate installation device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001071220A (en) * | 1999-08-31 | 2001-03-21 | Nitto Seiko Co Ltd | Heat press fit device for metal part |
| RU2208737C2 (en) * | 2001-01-12 | 2003-07-20 | Зильберберг Владимир Элюкимович | Permanent joint of end fittings with high-pressure hose |
| DE10301237A1 (en) * | 2002-01-15 | 2003-07-24 | Denso Corp | Robotic device with a robotic hand for heavy duty work |
| CN105598674A (en) * | 2016-03-15 | 2016-05-25 | 柳州职业技术学院 | Full-automatic automobile instrument panel pointer cap head pressing system |
| CN107309642A (en) * | 2017-06-29 | 2017-11-03 | 桐乡市凤鸣制罐厂 | A kind of assembling device of shaft end nut |
| CN107671527A (en) * | 2017-11-18 | 2018-02-09 | 诸城市新东方汽车仪表有限责任公司 | A kind of instrument visual pressing frock |
| CN209319172U (en) * | 2018-11-12 | 2019-08-30 | 大陆汽车车身电子系统（芜湖）有限公司 | A kind of pointer press-loading device |
| CN110900153A (en) * | 2019-12-02 | 2020-03-24 | 林广华 | Automatic press fitting device for plug on automatic gas tank assembly line |
-
2020
- 2020-11-11 CN CN202011256741.8A patent/CN112405433B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001071220A (en) * | 1999-08-31 | 2001-03-21 | Nitto Seiko Co Ltd | Heat press fit device for metal part |
| RU2208737C2 (en) * | 2001-01-12 | 2003-07-20 | Зильберберг Владимир Элюкимович | Permanent joint of end fittings with high-pressure hose |
| DE10301237A1 (en) * | 2002-01-15 | 2003-07-24 | Denso Corp | Robotic device with a robotic hand for heavy duty work |
| CN105598674A (en) * | 2016-03-15 | 2016-05-25 | 柳州职业技术学院 | Full-automatic automobile instrument panel pointer cap head pressing system |
| CN107309642A (en) * | 2017-06-29 | 2017-11-03 | 桐乡市凤鸣制罐厂 | A kind of assembling device of shaft end nut |
| CN107671527A (en) * | 2017-11-18 | 2018-02-09 | 诸城市新东方汽车仪表有限责任公司 | A kind of instrument visual pressing frock |
| CN209319172U (en) * | 2018-11-12 | 2019-08-30 | 大陆汽车车身电子系统（芜湖）有限公司 | A kind of pointer press-loading device |
| CN110900153A (en) * | 2019-12-02 | 2020-03-24 | 林广华 | Automatic press fitting device for plug on automatic gas tank assembly line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112405433A (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112405433B (en) | Automatic pressing method for pointer of barometer | |
| CN102626855B (en) | Automatic torsion bar press fitting, measuring and straightening equipment | |
| CN107309639B (en) | Fuel pump core assembly device and method for assembling pump core assembly by using same | |
| CN112113720A (en) | Multistation ball gas tightness testing arrangement | |
| CN112453864B (en) | Automatic press fitting equipment for pointer of barometer | |
| CN109128792A (en) | A kind of bolt tension device based on robot | |
| CN108956010B (en) | Pressure gauge calibration device | |
| CN104589032B (en) | Automobile turbocharger middle case adjusting air valve pressing sleeve device | |
| CN208026428U (en) | A kind of novel meter adjustment integration workstation | |
| CN116659840A (en) | Safety valve verification equipment and verification method | |
| CN209157636U (en) | A kind of bolt tension device based on robot | |
| CN209551626U (en) | A kind of automobile steel bushing dismantling device | |
| CN109175988A (en) | A kind of fastener is adjusted torsion device for screwing up and tightens force control method | |
| CN112405430B (en) | Air-charging locking device of automatic press-fitting equipment for pointer of automobile instrument barometer | |
| CN114838883A (en) | Instrument testing method and instrument testing device | |
| CN206717411U (en) | The valve body assembly line of total organic carbon analyzer | |
| CN209157637U (en) | A kind of adjustable torsion device for screwing up of fastener | |
| CN201387378Y (en) | Air circuit system test bench | |
| CN112179562B (en) | Clamping mechanism | |
| CN215642413U (en) | Multi-gear automatic voltage regulator | |
| CN216829565U (en) | Single-arm tightening equipment | |
| CN112428215B (en) | Locking device of automatic press fitting equipment for pointer of automobile instrument barometer and using method | |
| CN112444301A (en) | Method for connecting spiral ventilating threaded pipe and air inlet pipe of automobile barometer | |
| CN216483771U (en) | Adaptation multiplex condition's advanced multi-functional canned motor pump laboratory bench | |
| CN112476339B (en) | Belt wheel in automatic locking device and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |