CN112832608A - Safety interlocking device for air pressure chamber - Google Patents

Abstract

The invention provides a safety interlocking device used in an air pressure cabin, and relates to the field of safety protection. The safety interlock device includes: the safety interlocking device can control the safety baffle to carry out operation control on the opening and closing of the cabin door, so that the cabin door can not be opened randomly; the invention also has the characteristic of simple structure, can be applied to the original air pressure chamber of a user, can improve the safety of the air pressure chamber without integral replacement, and ensures that the device has higher practicability.

Description

Safety interlocking device for air pressure chamber

Technical Field

The invention relates to the technical field of safety protection, in particular to a safety interlocking device for a pneumatic chamber, and particularly relates to a chamber door safety connection device for a pneumatic chamber of a pulsating vacuum pressure steam sterilization cabinet.

Background

The air pressure cabin is a device capable of stabilizing the air pressure in the cabin at a certain level. The air pressure chamber is generally composed of a chamber door, a chamber body and a chamber door lock, when the air pressure chamber is used, an operator can inject gas such as oxygen into the air pressure chamber by using an air pump, when the air pressure reaches a certain value, the air pump is closed to stop injecting the gas into the air pressure chamber, correspondingly, the air pump can also extract the gas in the air pressure chamber to achieve a desired low pressure state, and the air pressure chamber is extremely dangerous at the moment regardless of the high pressure or low pressure state of the air pressure chamber.

The accidents caused by the air pressure chamber are usually caused by that an operator opens the chamber door when the air pressure in the air pressure chamber does not reach a safe value and opens the air pump to pump and inject the air pressure chamber without noticing the operator in the condition that the chamber door is not completely closed, and the small operation errors often cause serious accidents to threaten the safety of production and life of people, so that a device for solving the problems is necessary to be designed.

Chinese patent publication No. CN109730869A discloses a control device, method and pneumatic chamber for controlling the pneumatic chamber, wherein the control device controls a first switch valve to transmit gas output by an air pump to a second switch valve through a controller, and controls the second switch valve to transmit the received gas to an air cylinder, so as to close a chamber door of the pneumatic chamber; after the cabin door is closed, the first switch valve is controlled to transmit the gas output by the air pump to the cabin body, so that an environment with pressure is formed in the cabin body; and the second switch valve is also used for controlling the second switch valve to discharge the gas in the cylinder when the power failure is detected, so that the cabin door of the pneumatic cabin is opened. The automatic control of closing the cabin door, pressurizing the cabin body and opening the cabin door and the like in an accidental power failure of the pneumatic cabin can be realized through the matching of the controller, the first switch valve and the second switch valve, the safety of the device is improved, but the problems that the cabin door is closed in a virtual mode, and the cabin door which does not reach safe air pressure is opened by an operator in a wrong mode are solved.

The improvement of the prior art on the safety of the air pressure chamber is generally an integral improvement, a user needs to redeploy a complete air pressure chamber, and if a device which can be applied to the original air pressure chamber to improve the safety of the air pressure chamber can be provided, the practicability of the device can be greatly improved.

Therefore, there is a need to provide a new device for improving the safety of the air chamber to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a safety interlocking device used in an air pressure cabin, which comprises a mounting plate, an air cylinder and a dislocation rotating piece, wherein a detection element group, an electric control group and an air pressure sensor group are added, and the safety interlocking device can control a safety baffle to operate and control the opening and closing of a cabin door, so that the cabin door can not be opened randomly; the invention can be applied to the original air pressure chamber of a user, can improve the safety of the air pressure chamber without integral replacement, and has higher practicability.

The invention solves the technical problem, and adopts the technical scheme that:

a safety interlocking device for a pneumatic chamber comprises a chamber body and a chamber door, wherein the front end of the chamber body is provided with a door frame, one side of the door frame is connected with the chamber door through a hinge, the safety interlocking device comprises an installation plate, a cylinder and a dislocation rotating piece which are arranged on the door frame, and the dislocation rotating piece is arranged on one side close to the chamber door and provided with the hinge;

the mounting plate is provided with an air cylinder bracket, a rotating shaft hole and a fixing hole, and the mounting plate is fixed on the door frame by penetrating through the fixing hole by using a screw;

the air cylinder comprises a cylinder body and a support, an air cylinder mounting hole is formed in the support at the front end of the cylinder body, and the air cylinder is mounted on the air cylinder support through a screw penetrating through the air cylinder mounting hole;

the dislocation transmission part comprises a transmission part head, an intermediate shaft and a safety baffle, wherein the intermediate shaft comprises a central rotating shaft, the central rotating shaft vertically penetrates through a rotating shaft hole formed in the mounting plate and is in shaft rotating connection with the rotating shaft hole, one end of the central rotating shaft is connected with the transmission part head, and the other end of the central rotating shaft is connected with the safety baffle;

the end, far away from the middle shaft, of the transmission part head is provided with a limiting clamping groove and a sliding clamping groove, the sliding clamping groove penetrates through the front side and the rear side of the transmission part head and penetrates through the end wall of the transmission part head, the limiting clamping groove is long-strip-shaped and penetrates through the left side and the right side of the transmission part head, the groove body directions of the limiting clamping groove and the sliding clamping groove are mutually vertical and mutually penetrate, a shaft head fixing piece is arranged in the limiting clamping groove in a penetrating mode, external threads are arranged at two ends of the shaft head fixing piece, the middle of the shaft head fixing piece is of a polished rod;

be equipped with the telescopic link between cylinder and dislocation rotation piece, the one end fixed connection of telescopic link is on the output shaft of cylinder, and the fisheye spindle nose has been cup jointed to the other end of telescopic link, and the fisheye spindle nose stretches into in the sliding clamping groove to the periphery of the spindle nose mounting of installation in spacing draw-in groove is established to the cover.

According to the safety interlocking device for the air pressure chamber, the transverse plate is arranged on the lower edge or the upper edge of the door frame, the safety interlocking device is arranged on the transverse plate, and the mounting plate is fixed on the transverse plate by penetrating the fixing holes through screws;

the middle shaft also comprises mounting sleeves, two mounting sleeves 322 are respectively sleeved at two ends of the central rotating shaft, and the transmission part head and the safety baffle are both mounted and fixed at two ends of the middle shaft through the mounting sleeves;

the transmission part head and the safety baffle are arranged in a staggered manner.

Preferably, the limiting nut is in a stepped shaft shape, a shaft shoulder at the small end of the limiting nut is installed in the limiting clamping groove in a sliding and nesting mode, the limiting nut can slide in the elongated limiting clamping groove, the end face of the shaft shoulder at the large end of the limiting nut abuts against the side face of the transmission part head, and the shaft head fixing piece is installed and limited in the limiting clamping groove through the limiting nut;

and the limiting nut and the shaft head fixing piece are arranged and limited at the position of the limiting clamping groove of the transmission part head at the outer end of the limiting nut through an elastic washer, a flat gasket and a locking nut.

More preferably, a flange bearing is further arranged between the central rotating shaft and the rotating shaft hole, the central rotating shaft is rotatably connected in the rotating shaft hole on the mounting plate through the flange bearing shaft, the outer periphery of the central rotating shaft is sleeved on the inner periphery of the flange bearing in an interference fit manner, and the outer periphery of the flange bearing is sleeved on the inner periphery of the rotating shaft hole in an interference fit manner;

the dislocation contained angle between the axis of transmission portion head length direction and the axis of safety shield length direction is 0 degree to 90 degrees.

When the safety baffle rotates to the length direction of the safety baffle to be perpendicular to the side wall of the cabin door, the safety baffle abuts against the side wall of the cabin door and can prevent the cabin door from rotating around the hinge to open the door; when the safety baffle rotates to the length direction of the safety baffle and is parallel to the side wall of the cabin door, the safety baffle does not abut against the side wall of the cabin door any more, and a clearance space for the cabin door to open the door in a rotating mode around the hinge is reserved between the end part of the safety baffle and the side wall of the cabin door.

Further, still include control module and detection component group, detection component group includes first detector, second detector, third detector and fourth detector, and the left and right sides at door frame inner chamber upper beam is installed to first detector and second detector, and the left and right sides at door frame inner chamber underbeam is installed to third detector and fourth detector, installs the gauge point respectively with the corresponding position point of four detectors in the upper and lower both sides of hatch door, and after the hatch door was closed, first detector, second detector, third detector and fourth detector can be surveyed whether to align with the gauge point that corresponds the position point.

Furthermore, the control module further comprises an indicator light group, the indicator light group comprises four indicator lights, the four indicator lights in the indicator light group are respectively and correspondingly connected with the first detector, the second detector, the third detector and the fourth detector, the indicator light group is arranged on the periphery of the door frame at the corresponding position of the detection element group and electrically connected with the control module, and when the cabin door is not closed in place, the indicator lights can indicate the position where the cabin door is not closed in place.

Preferably, the detection element group further comprises an air pressure sensor group, the air pressure sensor group comprises a plurality of air pressure sensors distributed in the air pressure cabin body, the air pressure sensor group is electrically connected with the control module, and the air pressure sensor group can transmit air pressure data in the air pressure cabin to the control module in the form of electric signals.

More preferably, the control module further comprises a buzzer or/and an alarm lamp;

the cylinder adopts automatically controlled cylinder, still is provided with emergency switch at the cylinder body tail of cylinder, and emergency switch quilt cover establishes in the cylinder tail-hood.

According to the safety interlocking device for the air pressure cabin, the fisheye shaft head is in shaft rotating connection with the polished rod in the middle of the shaft head fixing piece, the fisheye shaft head can rotate around the polished rod in the middle of the shaft head fixing piece, and the fisheye shaft head can also push the shaft head fixing piece to slide in the elongated limiting clamping groove;

the telescopic rod can pull the fisheye shaft head and the shaft head fixing piece, drive the transmission part head and the rotating shaft to rotate around the rotating shaft hole, and drive the safety baffle to rotate through the rotating shaft.

As a further solution, a flange bearing is further arranged between the central rotating shaft and the rotating shaft hole, and an engine oil hole for adding engine oil is further formed in the cylinder body of the air cylinder.

Specifically, the safety interlocking device is applied to the air pressure cabin, a user can fix the safety interlocking device on a door frame of the cabin door through a mounting plate through screws, arrange a safety baffle plate at a hinge of the door frame and a door leaf, arrange detection element groups at the left side and the right side of an upper beam and a lower beam of the door frame respectively, and uniformly divide air pressure detectors into the air pressure cabin, when the user uses the air pressure cabin, the safety interlocking device can detect an internal air pressure value, when the air pressure value is within a safety range, the safety baffle plate is driven to be unlocked, the user can open the cabin door by himself, when the user closes the cabin door, the safety interlocking device can determine whether the cabin door is closed in place through detecting the detection element groups, when the related door operation is detected, but the door is not closed in place, the device can give an alarm prompt, when the cabin door is in an open state for a long time and the air pressure cabin is in a non-working state, the device can give, the safety interlocking device has the advantages that the safety interlocking device is simple in structure, convenient to use, safe and reliable, foreign matters or harmful substances enter the air pressure chamber, so that the air pressure chamber is wasted, the tail portion of the air cylinder of the safety interlocking device is provided with the emergency switch, the switch can be pressed down when special conditions occur, the limit of the device on the chamber door is removed, and the emergency switch is wrapped in the tail cover.

Compared with the related art, the safety interlocking device for the air pressure chamber has the following beneficial effects:

1. the safety interlocking device is arranged on the air pressure chamber, and the safety baffle is controlled by the safety interlocking device to operate and control the opening and closing of the door of the air pressure chamber, so that the air pressure chamber is not opened randomly;

2. the detection element is added, the electric control unit can detect whether the cabin door is closed in place, if the cabin door is closed in a false mode, the safety baffle plate is used for preventing the cabin door from being closed tightly, and an alarm is given out, so that accidents caused by the false closing of the cabin door are avoided, and the device can also avoid the situation that the cabin door is not closed and the damage is caused to the cabin body when the device is not used;

3. the invention can monitor the air pressure in the cabin by arranging a plurality of air pressure sensors in the cabin, and when the air pressure in the cabin does not reach the safety range, the safety separation blade is used for preventing personnel from opening and closing the cabin door;

4. the emergency switch is arranged at the tail part of the cylinder of the safety interlocking device, and when an emergency occurs, the emergency switch can be triggered to stop the safety interlocking device from limiting the cabin door, so that the safety of the device is improved;

5. the invention has simple structure, can be applied to the original air pressure chamber of a user, can improve the safety of the air pressure chamber without integral replacement, and has higher practicability.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of the safety interlock device for a pneumatic chamber provided in accordance with the present invention;

FIG. 2 is a schematic structural view of the mounting plate shown in FIG. 1;

FIG. 3 is a schematic view of the cylinder shown in FIG. 1;

FIG. 4 is a schematic view of the offset drive of FIG. 1;

FIG. 5 is an assembly view of a preferred embodiment of the safety interlock device for a pneumatic chamber provided by the present invention

FIG. 6 is a schematic view of the telescopic rod pulling the driving part head to one end side;

FIG. 7 is a diagram of a preferred embodiment of the safety interlock device for a pneumatic chamber provided by the present invention.

Reference numbers in the figures: 1. mounting a plate; 110. a cylinder support; 120. rotating the shaft hole; 130. a fixing hole; 2. a cylinder; 210. a cylinder body; 220. a cylinder mounting hole; 230. a cylinder tail cover; 3. rotating the workpiece in a staggered manner; 310. a transmission part head; 311. a limiting clamping groove; 312. a sliding clamping groove; 313. a limit nut; 320 middle shafts; 321. a central rotating shaft; 322. installing a sleeve; 323. a flange bearing; 330. a safety barrier; 4. a telescopic rod; 5. a fisheye shaft head; 510. a shaft head fixing piece; 6. an elastic washer; 7. a flat gasket; 8. a hexagon socket countersunk flat head cap screw; 9. a cabin door; 91. a door frame; 10. a hinge; 11. a first detector; 12. a second detector; 13. a detection point; 14. and an indicator light group. 92. Transverse plate

Detailed Description

The invention is further described with reference to the following figures and embodiments.

As shown in fig. 1 to 7, the safety interlock device for a pneumatic chamber is installed between a chamber door 9 of the pneumatic chamber and a chamber body of the pneumatic chamber, such as a pneumatic chamber of a "pulse vacuum pressure steam sterilization cabinet" for high temperature steam sterilization of medical instruments, and during operation, the chamber door 9 rotates around a hinge 10 on one side of a door body to be closed into the chamber body, so as to close and seal the pneumatic chamber. The door frame 91 is arranged at the front end of the cabin body and matched with the cabin door for opening and closing the door, and the door frame 91 and the cabin body are integrally arranged, namely the front end part of the cabin body is regarded as the door frame 91. The relationship between the cabin door 9 and the cabin door frame 91 is the same as the relationship between the door and the door frame installed in the building house.

The safety interlock device according to the present embodiment includes a mounting plate 1 mounted on a door frame 91, a cylinder 2, and a misalignment rotating member 3. Specifically, as shown in fig. 1 and 7, in order to facilitate installation of the safety interlock device, in the present embodiment, a transverse plate 92 is further disposed on the lower side or the upper side of the door frame 91 at the front end of the cabin, the transverse plate 92 is specifically mounted on the upper edge or the lower edge of the door frame 91, the transverse plate 92 is located above or below the cabin door 9, in the present embodiment, the transverse plate 92 is mounted on the lower edge of the door frame 91, the safety interlock device is specifically mounted on the transverse plate 92, see fig. 7, and the offset rotary member 3 is located near the side of the cabin door 9 where the hinge 10 is mounted. Of course, the safety interlock device may be directly mounted to the door frame 91 without providing the cross plate 92.

As shown in fig. 1-2, a cylinder bracket 110 is disposed on the mounting plate 1, a rotating shaft hole 120 and a fixing hole 130 are further disposed on the mounting plate 1, and the mounting plate 1 is fixed to a horizontal plate 92 disposed on a door frame 91 by screws passing through the fixing hole 130, as shown in fig. 7.

As shown in fig. 3, the cylinder 2 includes a cylinder body 210 and a support, a cylinder mounting hole 220 is formed in the support at the front end of the cylinder body 210, the cylinder 2 is mounted and fixed on the cylinder bracket 110 by using a screw through the cylinder mounting hole 220, the positional relationship after mounting is as shown in fig. 1 and 7, and after mounting, the cylinder 2 and the mounting plate 1 are arranged in parallel.

As shown in fig. 1 and 4, the misalignment driving member 3 includes a driving part head 310, an intermediate shaft 320 and a safety shield 330, the intermediate shaft 320 includes a central rotating shaft 321 and a mounting sleeve 322, the central rotating shaft 321 vertically passes through the rotating shaft hole 120 formed in the mounting plate 1 and is pivotally connected in the rotating shaft hole 120, in order to enable the central rotating shaft 321 to flexibly rotate in the rotating shaft hole 120 on the mounting plate 1, a flange bearing 323 is further disposed between the central rotating shaft 321 and the rotating shaft hole 120, that is, the central rotating shaft 321 is pivotally connected in the rotating shaft hole 120 on the mounting plate 1 through the flange bearing 323, and an outer periphery of the central rotating shaft 321 is sleeved on an inner periphery of the flange bearing 323 in an interference fit manner, as shown in fig. 4 in. The outer circumference of the flange bearing 323 is fitted over the inner circumference of the rotating shaft hole 120 in an interference fit manner.

As shown in fig. 4, mounting sleeves 322 are respectively nested at two ends of a central rotating shaft 321, a transmission part head 310 and a safety baffle 330 are respectively mounted at two ends of an intermediate shaft 320 through the mounting sleeves 322, and a central axis of the transmission part head 310 in the length direction and a central axis of the safety baffle 330 in the length direction can be arranged in a staggered manner in a three-dimensional space, the staggered included angle is 0 to 90 degrees, preferably, the staggered included angle is 45 degrees. Therefore, when the transmission head 310 drives the rotation shaft 321 to rotate around the rotation shaft hole 120, the safety barrier 330 can be driven to rotate.

The end of the transmission part head 310 far away from the intermediate shaft 320 is provided with a limiting clamping groove 311 and a sliding clamping groove 312, the limiting clamping groove 311 and the sliding clamping groove 312 are vertically arranged in a staggered manner, the sliding clamping groove 312 penetrates through the front side and the rear side of the transmission part head 310 and penetrates through the end wall of the transmission part head 310, the limiting clamping groove 311 is long and penetrates through the left side and the right side of the transmission part head 310, specifically, as shown in fig. 4, the groove body direction of the sliding clamping groove 312 is perpendicular to the axis direction of the intermediate shaft 320, and the groove body directions of the limiting clamping groove 311 and the sliding clamping groove 312. A shaft head fixing piece 510 penetrates through the limiting clamping groove 311, external threads are arranged at two ends of the shaft head fixing piece 510, and the middle of the shaft head fixing piece 510 is of a polished rod structure and is located in the sliding clamping groove 312. The limiting nuts 313 are sleeved at two ends of the shaft head fixing piece 510, the limiting nuts 313 are in a stepped shaft shape, shaft shoulders of small ends of the limiting nuts 313 are installed in the limiting clamping grooves 311 in a sliding and nesting mode, the limiting nuts 313 can slide back and forth in the limiting clamping grooves 311 which are long in strip shapes, and therefore the shaft head fixing piece 510 is driven to move back and forth in the limiting clamping grooves 311, and the relative position of the shaft head fixing piece 510 in the limiting clamping grooves 311 can be adjusted conveniently.

The shaft shoulder end face of the large end of the limiting nut 313 abuts against the side face of the transmission part head 310, specifically, as shown in fig. 4, the shaft head fixing piece 510 is installed and limited in the limiting clamping groove 311 through the limiting nut 313, and can slide back and forth in the limiting clamping groove 311, so that the relative position of the shaft head fixing piece 510 in the limiting clamping groove 311 can be conveniently adjusted. The limiting nut 313 and the shaft head fixing piece 510 are arranged and limited at the position of the limiting clamping groove 311 of the transmission head 310 at the outer end of the limiting nut 313 through an elastic washer 6, a flat gasket 7 and a locking nut.

As shown in fig. 1, 3 and 4, a telescopic rod 4 is arranged between the cylinder 2 and the dislocation rotating piece 3; one end fixed connection of telescopic link 4 is on the output shaft of cylinder 2, the other end of telescopic link 4 has cup jointed fisheye spindle nose 5, fisheye spindle nose 5 stretches into in the slip draw-in groove 312 to the cover is established in the periphery of the spindle nose mounting 510 of spacing draw-in groove 311 installation, the axle is connected between the polished rod at fisheye spindle nose 5 and spindle nose mounting 510 middle part, fisheye spindle nose 5 can rotate around the polished rod position at spindle nose mounting 510 middle part, and fisheye spindle nose 5 can also promote spindle nose mounting 510 and make a round trip to slide in the spacing draw-in groove 311 of rectangular shape. The range framed by the elongated limiting clamping groove 311 is a range which enables the telescopic rod 4 to horizontally stretch without resistance under the driving of the cylinder 2. More importantly, the telescopic rod 4 can pull the fisheye shaft head 5 and the shaft head fixing piece 510, so as to drive the transmission part head 310 and the rotating shaft 321 to rotate or swing around the rotating shaft hole 120, thereby driving the safety barrier 330 to swing through the rotating shaft 321.

In use, as shown in fig. 5 and 7, the safety interlock device is fixed to the cross plate 92 on the lower or upper side of the door frame 91 by the mounting plate 1, and the side of the offset rotary member 3 close to the door 9 mounting hinge 10. Specifically, the dislocation rotation member 3 has an unlocking state (the unlocking state is shown in fig. 5) parallel to the side wall of the cabin door 9 and an interlocking state perpendicular to the side wall of the cabin door 9, the cylinder 2 can pull the telescopic rod 4, the fisheye shaft head 5 and the shaft head fixing member 510 to push the transmission part head 310 and the intermediate shaft 320 to rotate or swing around the rotation shaft hole 120 and the flange bearing 323, so as to drive the safety barrier 330 to swing through the rotation shaft 321, so that the safety barrier 330 has an unlocking state in which the length direction thereof is parallel to the side wall of the cabin door 9, and the safety barrier 330 has an interlocking state in which the length direction thereof is perpendicular to the side wall of the cabin door 9.

When the safety barrier 330 rotates to the length direction perpendicular to the side wall of the cabin door 9, the end of the safety barrier 330 abuts against the side wall of the cabin door 9, and the cabin door 9 can be prevented from rotating around the hinge 10 to open the door, so as to lock the cabin door 9, and thus, the interlocking of the cabin door 9 is realized. When the safety baffle 330 rotates to the length direction to be parallel to the side wall of the cabin door 9, the safety baffle 330 is not abutted against the side wall of the cabin door 9 any more, and a sufficient gap space is reserved between the end part of the safety baffle 330 and the side wall of the cabin door 9, so that the cabin door 9 can smoothly rotate around the hinge 10 to open and close, and the cabin door 9 can be freely opened and closed, thereby unlocking the cabin door 9.

The safety interlocking device for the air pressure cabin provided by the embodiment further comprises a control module and a detection element group, wherein the detection element group comprises a first detector 11, a second detector 12, a third detector and a fourth detector, the first detector 11 and the second detector 12 are installed on the left side and the right side of an upper beam of an inner cavity of the door frame 91, the third detector and the fourth detector are installed on the left side and the right side of a lower beam of the inner cavity of the door frame 91, detection points 13 are respectively installed at the upper side and the lower side of the cabin door 9 and corresponding to the first detector to the fourth detector, and when the cabin door 9 is rotationally closed in the door frame 91, the detection points 13 arranged on the upper side and the lower side of the cabin door 9 can respectively correspond to the first detector to the fourth detector arranged on the upper side and the. When the hatch 9 is closed, the first detector 11, the second detector 12, the third detector and the fourth detector can detect whether the hatch 9 is aligned with the detection point 13 of the corresponding point location, so as to determine whether the hatch 9 is closed in place in the door frame 91.

When the cabin door 9 is closed in the door frame 91, the first to fourth detectors detect whether the cabin door 9 is aligned with the detection point 13 of the corresponding point position, the detected position corresponding information is sent to the control module, the control module sends a next control instruction according to the received position information, when the position information sent by the four detectors indicates that the cabin door 9 is closed in place, the control module controls the electric control cylinder to drive the safety baffle 330 to rotate to a horizontal state, the end part of the safety baffle 330 abuts against the side wall of the cabin door 9 to tightly abut and lock the cabin door 9, so that the pressing force of the cabin door 9 on the sealing strip arranged on the inner side of the door frame 91 is maintained, and the mistaken opening of the cabin door 9 is prevented.

The control module further comprises a buzzer or/and an alarm lamp, if at least one of the four detectors does not detect the detection point 13 or if the position information sent to the control module by the detectors does not conform to the set information, it is indicated that the door closing operation performed by the operator does not enable the cabin door 9 to be closed in place, the control module drives the alarm lamp to flash to remind the operator or controls the buzzer to sound, the cabin door 9 is not closed in place, in addition, when the detectors detect that the cabin door 9 is not closed for a long time and the air pressure cabin is in a non-working state, it is indicated that the operator forgets to close the door, and the control module also drives the alarm lamp and the buzzer to remind the operator.

As a more specific solution of this embodiment, the control module further includes an indicator light group 14, the indicator light group 14 includes four indicator lights, the four indicator lights in the indicator light group 14 are respectively and correspondingly connected to the first detector 11, the second detector 12, the third detector and the fourth detector, the indicator light group 14 is disposed on the periphery of the door frame 91 at the corresponding position of the detecting element group and electrically connected to the control module, and when the hatch door 9 is not closed in place, the indicator lights can indicate the position where the hatch door 9 is not closed in place.

Specifically, the purpose of arranging the indicator light is to facilitate the user to observe the specific position of the compartment door 9 which is not closed in place, and the user can select the position according to the actual requirement.

As a more specific solution of this embodiment, the detecting element set further includes an air pressure sensor set, the air pressure sensor set includes a plurality of air pressure sensors distributed in the air pressure chamber, the air pressure sensor set is electrically connected to the control module, and the air pressure sensor set can transmit air pressure data in the air pressure chamber to the control module in the form of an electrical signal.

Specifically, the air pressure sensor group is added to monitor the real-time condition of the air pressure in the air pressure chamber, and the buzzer and the alarm lamp are added to remind an operator of stopping the error operation in time; the control module can read the real-time data of the air pressure sensor group and compare the real-time data with a safe air pressure range, if the real-time data are in the safe air pressure range, the door opening operation is allowed to be executed, and if the real-time data are not in the safe air pressure range, the door opening operation is not allowed to be executed; and issues an alarm message when the door opening operation is forcibly performed.

As a more specific solution of this embodiment, the air cylinder 2 is an electrically controlled air cylinder, and an emergency switch is further disposed at the tail of the air cylinder 2, and the emergency switch is covered by the air cylinder tail cover 230, and the air cylinder 2 can be stopped and the telescopic rod 4 can be stopped by pressing the emergency switch.

The emergency switch is provided to prevent an emergency situation, which increases the safety of the device, and releases the restraint of the hatch 9 in case of a dangerous situation, and the switch is provided in the tail cap 230 to avoid a false touch.

As a more specific solution of this embodiment, in order to reduce the loss of the rotating shaft, a flange bearing 323 is further disposed between the central rotating shaft 321 and the rotating shaft hole 120, and in order to make the service life of the device longer, the cylinder should be lubricated and protected by adding oil at regular time, so an oil hole for adding oil is further opened on the cylinder block 210.

The working principle of the embodiment is as follows: the safety interlocking device is applied to an air pressure chamber, a user can fix the safety interlocking device on a door frame 91 through a mounting plate 1 through screws, a safety baffle plate 330 is arranged at a hinge 10 of the door frame 91 and a door leaf, detection element groups are respectively arranged at the left side and the right side of an upper beam and a lower beam of the door frame 91, air pressure detectors are uniformly distributed in the air pressure chamber, when the air pressure chamber is used by a user, the safety interlocking device can detect the internal air pressure value, when the air pressure value is in a safety range, the safety baffle plate 330 is driven to be unlocked, the user can open a door 9 by himself, when the user closes the door 9, the safety interlocking device can determine whether the door 9 is closed in place through detecting the detection element groups, when the relevant door operation is detected, but the door is not closed in place, the device can give an alarm prompt, when the door 9 is in an open state for a long time, the device sends a door closing prompt sound to prevent the cabin door 9 from being in an open state for a long time when the air pressure cabin is not used, when external impurities or harmful substances enter the air pressure cabin and the air pressure cabin is lost, the tail part of the cylinder 2 of the safety interlocking device is provided with an emergency switch, the emergency switch can be pressed down when special conditions occur, the limit of the device on the cabin door 9 is removed, and the emergency switch is wrapped in the tail cover 230.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a safety interlock for pneumatic chamber, pneumatic chamber includes the cabin body and hatch door (9), is equipped with door frame (91) at the cabin body front end, and door frame (91) one side is connected its characterized in that through hinge (10) and hatch door (9): the safety interlocking device comprises a mounting plate (1) arranged on a door frame (91), a cylinder (2) and a dislocation rotating piece (3), and the dislocation rotating piece (3) is arranged on one side close to a cabin door (9) and provided with a hinge (10);

the mounting plate (1) is provided with a cylinder support (110), the mounting plate (1) is also provided with a rotating shaft hole (120) and a fixing hole (130), and the mounting plate (1) is fixed on the door frame (91) by passing a screw through the fixing hole (130);

the air cylinder (2) comprises a cylinder body (210) and a support, an air cylinder mounting hole (220) is formed in the support at the front end of the cylinder body (210), and the air cylinder (2) is mounted on the air cylinder support (110) by penetrating a screw through the air cylinder mounting hole (220);

the dislocation transmission piece (3) comprises a transmission part head (310), an intermediate shaft (320) and a safety baffle (330), wherein the intermediate shaft (320) comprises a central rotating shaft (321), the central rotating shaft (321) vertically penetrates through a rotating shaft hole (120) formed in the mounting plate (1) and is in shaft rotating connection with the rotating shaft hole (120), one end of the central rotating shaft (321) is connected with the transmission part head (310), and the other end of the central rotating shaft (321) is connected with the safety baffle (330);

a limiting clamping groove (311) and a sliding clamping groove (312) are formed in one end, far away from the intermediate shaft (320), of the transmission part head (310), the sliding clamping groove (312) penetrates through the front side and the rear side of the transmission part head (310) and penetrates through the end wall of the transmission part head (310), the limiting clamping groove (311) is long-strip-shaped and penetrates through the left side and the right side of the transmission part head (310), the directions of groove bodies of the limiting clamping groove (311) and the sliding clamping groove (312) are perpendicular to each other and penetrate through each other, a shaft head fixing piece (510) penetrates through the limiting clamping groove (311), external threads are arranged at two ends of the shaft head fixing piece (510), the middle part of the shaft head fixing piece (510) is of a polished rod structure and is located in the sliding clamping groove (312;

be equipped with telescopic link (4) between cylinder (2) and dislocation rotation piece (3), the one end fixed connection of telescopic link (4) is on the output shaft of cylinder (2), and fisheye spindle nose (5) have been cup jointed to the other end of telescopic link (4), and fisheye spindle nose (5) stretch into in sliding clamping groove (312) to the periphery of the spindle nose mounting (510) of installing is established in spacing clamping groove (311) in the cover.

2. A safety interlock device for a pneumatic chamber according to claim 1, wherein: a transverse plate (92) is arranged on the lower edge or the upper edge of the door frame (91), the safety interlocking device is arranged on the transverse plate (92), and a mounting plate (1) is fixed on the transverse plate (92) by using screws to penetrate through the fixing holes (130);

the intermediate shaft (320) further comprises an installation sleeve (322), the two ends of the central rotating shaft (321) are respectively sleeved with the installation sleeve (322), and the transmission part head (310) and the safety baffle (330) are fixedly installed at the two ends of the intermediate shaft (320) through the installation sleeves (322);

the transmission part head (310) and the safety baffle (330) are arranged in a staggered mode.

3. A safety interlock device for a pneumatic chamber according to claim 1, wherein: the limiting nut (313) is in a stepped shaft shape, a shaft shoulder at the small end of the limiting nut (313) is installed in the limiting clamping groove (311) in a sliding and nesting mode, the limiting nut (313) can slide in the long-strip-shaped limiting clamping groove (311), the end face of the shaft shoulder at the large end of the limiting nut (313) abuts against the side face of the transmission part head (310), and the shaft head fixing piece (510) is installed and limited in the limiting clamping groove (311) through the limiting nut (313);

the limiting nut (313) and the shaft head fixing piece (510) are installed and limited at the position of a limiting clamping groove (311) of the transmission part head (310) at the outer end of the limiting nut (313) through an elastic washer (6), a flat gasket (7) and a locking nut.

4. A safety interlock device for a pneumatic chamber according to claim 2, wherein: a flange bearing (323) is further arranged between the central rotating shaft (321) and the rotating shaft hole (120), the central rotating shaft (321) is in shaft rotating connection with the rotating shaft hole (120) on the mounting plate (1) through the flange bearing (323), the periphery of the central rotating shaft (321) is sleeved on the inner periphery of the flange bearing (323) in an interference fit manner, and the periphery of the flange bearing (323) is sleeved on the inner periphery of the rotating shaft hole (120) in an interference fit manner;

the dislocation included angle between the central axis of the transmission part head (310) in the length direction and the central axis of the safety baffle (330) in the length direction is 0-90 degrees.

5. A safety interlock device for a pneumatic chamber according to claim 3, wherein: when the safety baffle (330) rotates to the length direction of the safety baffle to be vertical to the side wall of the cabin door (9), the safety baffle (330) is abutted against the side wall of the cabin door (9) to prevent the cabin door (9) from rotating around the hinge (10) to open the door; when the safety baffle (330) rotates to the length direction of the safety baffle to be parallel to the side wall of the cabin door (9), the safety baffle (330) is not abutted against the side wall of the cabin door (9), and a gap space for the cabin door (9) to rotate around the hinge (10) to open the door is reserved between the end part of the safety baffle (330) and the side wall of the cabin door (9).

6. A safety interlock device for a pneumatic chamber according to claim 1, wherein: still include control module and detection component group, the detection component group includes first detector (11), second detector (12), third detector and fourth detector, install the left and right sides at door frame (91) inner chamber upper beam with second detector (12) first detector (11), the left and right sides at door frame (91) inner chamber underbeam is installed with the fourth detector to the third detector, install gauge point (13) respectively with the corresponding position point of four detectors in the upper and lower both sides of hatch door (9), after hatch door (9) are closed, first detector (11), second detector (12), whether third detector and fourth detector can be surveyed and whether align with gauge point (13) that correspond the position point.

7. The safety interlock device for a pneumatic chamber according to claim 6, wherein: the control module further comprises an indicator light group (14), the indicator light group (14) comprises four indicator lights, the four indicator lights in the indicator light group (14) are respectively and correspondingly connected with the first detector (11), the second detector (12), the third detector and the fourth detector, the indicator light group (14) is arranged on the periphery of the door frame (91) at the corresponding position of the detection element group and electrically connected with the control module, and when the cabin door (9) is not closed in place, the indicator lights can indicate that the cabin door (9) is not closed in place.

8. The safety interlock device for a pneumatic chamber according to claim 6, wherein: the detection component group further comprises an air pressure sensor group, the air pressure sensor group comprises a plurality of air pressure sensors distributed in the air pressure cabin body, the air pressure sensor group is electrically connected with the control module, and the air pressure sensor group can transmit air pressure data in the air pressure cabin to the control module in an electric signal form.

9. The safety interlock device for a pneumatic chamber according to claim 6, wherein: the control module also comprises a buzzer or/and an alarm lamp;

the cylinder (2) adopts an electric control cylinder, an emergency switch is further arranged at the tail of the cylinder body of the cylinder (2), and the emergency switch is covered in a cylinder tail cover (230).

10. A safety interlock device for a pneumatic chamber according to claim 1, wherein: the fisheye shaft head (5) is in shaft rotating connection with the polished rod in the middle of the shaft head fixing piece (510), the fisheye shaft head (5) can rotate around the polished rod in the middle of the shaft head fixing piece (510), and the fisheye shaft head (5) can also push the shaft head fixing piece (510) to slide in the elongated limiting clamping groove (311);

the telescopic rod (4) can pull the fisheye shaft head (5) and the shaft head fixing piece (510) and drive the transmission part head (310) and the rotating shaft (321) to rotate around the rotating shaft hole (120), and the safety baffle (330) is driven to rotate through the rotating shaft (321).

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