Automatic bedplate locking device

Abstract

The invention relates to spaceflight launching equipment, in particular to an automatic platen locking device which comprises a first plug pin, a second plug pin, a plug pin driving assembly and two sensors, the sensors are connected with a monitoring unit, one end of the first plug pin and one end of the second plug pin are both connecting ends, and the first plug pin and the second plug pin are connected with each other. The other end of the first plug pin and the other end of the second plug pin are locking ends, the plug pin driving assembly drives the first plug pin and the second plug pin to synchronously stretch out or retract, and when stretching out, the locking end of the first plug pin and the locking end of the second plug pin are connected with a supporting block of a platen to lock the platen. And during retraction, the platen is unlocked, the first plug pin and the second plug pin retract in place, and when the first plug pin and the second plug pin stretch out in place, the two sensors are triggered respectively and transmit triggering information to the monitoring unit. According to the invention, remote monitoring and control can be realized, and automatic control is realized.

Description

Technical Field

[0001] The present invention relates to a space launch device, and particularly to a platen automatic locking device. Background Art

[0002] Flow guiding holes are formed in a space launch pad and a platen is correspondingly arranged; when not entering the launch process, the platen is closed, the corresponding flow guiding holes are closed, and the platen and the launch pad form a complete plane for personnel to walk and operate; when entering the launch process, the platen is unfolded, the corresponding flow guiding holes are opened to ensure the smooth discharge of rocket gas during the launch process; the platen is equipped with a locking device, which locks the platen after the platen is closed to prevent the platen from accidentally opening and causing personnel to fall; when the platen needs to be unfolded, the locking device unlocks the platen to ensure the smooth unfolding of the platen; currently, the actions of the platen locking device on the launch pad all rely on manual operation by personnel, which not only increases the operation risk but also is not conducive to realizing the full automation of the launch process; therefore, there is an urgent need to design a platen automatic locking device to solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a platen automatic locking device that can realize remote monitoring and control and automatic control.

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] A platen automatic locking device of the present invention includes a first bolt, a second bolt, a bolt driving assembly, and two sensors. The sensors are connected to a monitoring unit. One end of the first bolt and one end of the second bolt are connection ends, and the other end of the first bolt and the other end of the second bolt are locking ends. The bolt driving assembly drives the first bolt and the second bolt to extend or retract synchronously. When extending, the locking ends of the first bolt and the second bolt are connected to the support blocks of the platen to lock the platen. When retracting, the platen is unlocked. When extending, the first bolt and the second bolt are coaxial. When the first bolt and the second bolt retract in place and when the first bolt and the second bolt extend in place, the two sensors are respectively triggered and transmit the trigger information to the monitoring unit.

[0006] Further, the bolt driving assembly includes a crank, a first connecting rod, a second connecting rod, a third connecting rod, a first rotating shaft, and a third connecting rod driving member. The position of the first rotating shaft is fixed. The crank is connected to the first rotating shaft. One end of the first connecting rod, one end of the second connecting rod, and one end of the third connecting rod are respectively hinged to the first end, the second end, and the third end of the crank. The first rotating shaft is located between the first end and the second end. The connection point between the crank and the first connecting rod and the connection point between the crank and the second connecting rod are located on both sides of the first rotating shaft. The other end of the first connecting rod is hinged to the connecting end of the first bolt. The other end of the second connecting rod is hinged to the connecting end of the second bolt. The other end of the third connecting rod is hinged to the bracket. The third connecting rod driving member drives the third connecting rod to swing with the connection point between the third connecting rod and the bracket as the fulcrum, driving the crank to rotate around the first rotating shaft, so that the first bolt and the second bolt extend or retract.

[0007] Further, the third connecting rod driving member is a hydraulic cylinder. One end of the hydraulic cylinder is hinged to the bracket, and the other end is hinged to the middle of the third connecting rod.

[0008] Further, a box body is further included. The first bolt, the second bolt, and the bolt driving assembly are all arranged in the box body. The first rotating shaft is connected to the bottom plate of the box body. When the first bolt and the second bolt extend, they pass through the opposite side plates of the box body. The bracket is the side of the box body.

[0009] Further, a first support block and a second support block are further included. The first support block and the second support block are respectively connected to the opposite side plates of the box body. Through holes for the first bolt and the second bolt to pass through are provided on the first support block, the second support block, and the two side plates of the box body.

[0010] Further, it further includes a second pin shaft, a third pin shaft, a fourth pin shaft, a fifth pin shaft, a sixth pin shaft, a seventh pin shaft, an eighth pin shaft, and a ninth pin shaft that can be manually disassembled, and a first support and a second support. The first support and the second support are respectively connected to the two side plates of the box body. The third connecting rod and the hydraulic cylinder are respectively connected to the box body through the first support and the second support. Between the first connecting rod and the crank, between the first connecting rod and the first pin, between the second connecting rod and the crank, between the second connecting rod and the second pin, between the third connecting rod and the crank, between the third connecting rod and the first support, between the piston rod of the hydraulic cylinder and the third connecting rod, and between the hydraulic cylinder and the second support are respectively connected through the second pin shaft, the third pin shaft, the fourth pin shaft, the fifth pin shaft, the sixth pin shaft, the seventh pin shaft, the eighth pin shaft, and the ninth pin shaft.

[0011] Further, the second pin shaft, the third pin shaft, the fourth pin shaft, and the fifth pin shaft have the same structure. The third pin shaft includes a pin shaft body and a limit screw. The limit screw passes through the pin shaft body in the radial direction to limit the pin shaft body.

[0012] Further, the first rotating shaft, the sixth pin shaft, the seventh pin shaft, the eighth pin shaft, and the ninth pin shaft are all limited by a limit plate.

[0013] Further, two of the sensors are connected to the bottom plate of the box body. The position of one sensor corresponds to the position of the eighth pin shaft when the first pin and the second pin retract, and the position of the other sensor corresponds to the position of the eighth pin shaft when the first pin and the second pin extend. A trigger block is connected to the bottom of the eighth pin shaft. When the first pin and the second pin extend or retract, the trigger block blocks the sensor to trigger the sensor.

[0014] Further, it further includes a sensor bracket and a first support plate. The first support plate is connected to the bottom plate of the box body, the sensor bracket is connected to the first support plate, and the two sensors are both connected to the sensor bracket.

[0015] Compared with the prior art, the automatic locking device for a platen of the present invention has at least the following beneficial effects:

[0016] An automatic locking device for a platen of the present invention includes a first bolt, a second bolt, a bolt driving assembly, and a sensor. When the first bolt and the second bolt extend and retract, the sensor is triggered and transmits the trigger information to the monitoring unit. Therefore, remote monitoring and control of the locking device can be achieved, and the locking and unlocking processes of the platen can be automatically controlled, realizing full automation of the launching process and reducing the danger to operators.

[0017] The following further describes the automatic locking device for a platen of the present invention with reference to the accompanying drawings. Description of the Drawings

[0018] Figure 1 It is one of the schematic diagrams of the cooperation structure between the automatic locking device for a platen of the present invention and the platen;

[0019] Figure 2 It is another schematic diagram of the cooperation structure between the automatic locking device for a platen of the present invention and the platen;

[0020] Figure 3 It is a schematic diagram of the structure of the first bolt and the second bolt of the automatic locking device for a platen of the present invention in the extended state;

[0021] Figure 4 It is a schematic diagram of the structure of the first bolt and the second bolt of the automatic locking device for a platen of the present invention in the retracted state;

[0022] Figure 5 It is a schematic diagram of the structure of the third connecting rod in the automatic locking device for a platen of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the crank in the automatic locking device for a platen of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the ninth pin shaft in the automatic locking device for a platen of the present invention. Detailed Embodiments

[0025] As Figure 1 , Figure 2 shown, the platen 04 includes a platen body 41 and a steel frame structure 42. The platen body 41 is connected to the steel frame structure 42 through a slewing lug 43, and the platen body 41 is driven by a hydraulic cylinder or an electric cylinder to rotate around the slewing lug 43 to open or close the platen. A support block 44 is provided on the side of the platen body 41. An automatic locking device for a platen of the present invention is connected to the support block 44 in the locked state to restrict the rotation of the platen body 41 around the slewing lug 43.

[0026] As Figure 3 , 4As shown in the figure, an automatic locking device for a platen of the present invention includes a first bolt 01, a second bolt 02, a bolt driving assembly 03, and two sensors 06. Both of the two sensors 06 are connected to a monitoring unit. One end of the first bolt 01 and one end of the second bolt 02 are connection ends, and the other end of the first bolt 01 and the other end of the second bolt 02 are locking ends. The bolt driving assembly drives the first bolt 01 and the second bolt 02 to extend or retract synchronously. When extending, the locking ends of the first bolt 01 and the second bolt 02 are connected to the support block 44 to lock the platen body 41. When extending, the first bolt 01 and the second bolt 02 are coaxial, as Figure 3 shown. When retracting, the platen body 41 is unlocked, as Figure 4 shown; when the first bolt 01 and the second bolt 02 extend in place and when the first bolt 01 and the second bolt 02 retract in place, the two sensors 06 are respectively triggered and transmit the trigger information to the monitoring unit. After the detection unit receives the information of the sensors 06, the unfolding action of the platen 04 can be performed, thereby realizing the remote monitoring of the locking device. An automatic locking device for a platen of the present invention, since it includes a first bolt 01, a second bolt ǎ, a bolt driving assembly 03, and a sensor 06, when the first bolt 01 and the second bolt 02 extend and retract, the sensor 06 is triggered and transmits the trigger information to the monitoring unit. Therefore, the remote monitoring and control of the locking device can be realized, and the locking and unlocking processes of the platen can be automatically controlled, realizing the full automation of the launching process and reducing the danger of operators.

[0027] Optionally, as Figure 5 , Figure 6 shown, the bolt driving assembly 03 includes a crank 31, a first connecting rod 32, a second connecting rod 33, a third connecting rod 34, a first rotating shaft 311, and a third connecting rod driving member. The position of the first rotating shaft 311 is fixed. The middle of the crank 31 is connected to the first rotating shaft 311. The first end, the second end, and the third end of the crank 31 are respectively hinged to one end of the first connecting rod 32, one end of the second connecting rod 33, and one end of the third connecting rod 34. The first rotating shaft 311 is located between the first end and the second end. The connection point between the crank 31 and the first connecting rod 32 and the connection point between the crank 31 and the second connecting rod 33 are respectively located on both sides of the first rotating shaft 311. The other end of the first connecting rod 32 is hinged to the connection end of the first bolt 01, and the other end of the second connecting rod 33 is hinged to the connection end of the second bolt 02. The other end of the third connecting rod 34 is hinged to the bracket. The third connecting rod driving member drives the third connecting rod 34 to swing with the connection point between the third connecting rod 34 and the bracket as the fulcrum, driving the crank 31 to rotate around the first rotating shaft 311, so as to make the first bolt 01 and the second bolt 02 extend or retract. When it is necessary to unlock the platen 04, (the limiting device changes from Figure 3 the state to Figure 4State) The third link driving member pushes the third link 34 to rotate the third link 34 clockwise (in the top view direction), driving the crank 31 to rotate counterclockwise (in the top view direction) around the first rotation shaft 311. Thus, the first pin 01 and the second pin 02 are driven by the first link 32 and the second link 33 to retract. After the retraction reaches the position, a sensor 06 is triggered, and the sensor 06 transmits the information to the monitoring unit;

[0028] When the platen 04 needs to be locked (the limiting device changes from Figure 4 state to Figure 3 state), the third link driving member pulls the third link 34 to rotate the third link 34 counterclockwise (in the top view direction), driving the crank 31 to rotate clockwise (in the top view direction) around the first rotation shaft 311. Thus, the first pin 01 and the second pin 02 are driven by the first link 32 and the second link 33 to extend. After the extension reaches the position, a sensor 06 is triggered, and the sensor 06 transmits the information to the monitoring unit.

[0029] Optionally, the third link driving member is a hydraulic cylinder 36. One end of the hydraulic cylinder 36 is hinged to the bracket, and the other end is hinged to the middle of the third link 34. When the piston rod of the hydraulic cylinder 36 extends, it pushes the third link 34 to rotate the third link 34 clockwise. When the piston rod of the hydraulic cylinder 36 retracts, it pulls the third link 34 to rotate the third link 34 counterclockwise. The third link driving member can also select other linear motion driving members. The hydraulic cylinder 36 as the third link driving member has a simple structure and stable performance.

[0030] Optionally, it further includes a box body 05 with an open top. The box body 05 is used to connect to the platen 04. The first pin 01, the second pin 02, and the pin driving assembly 03 are all arranged inside the box body 05. The first rotation shaft 311 is connected to the bottom plate of the box body 05. When the first pin 01 and the second pin 02 extend, they pass through the opposite side plates of the box body 05. The bracket is the side of the box body 05. The first pin 01, the second pin 02, and the pin driving assembly 03 are all arranged inside the box body 05 and are made of metal parts, ensuring that the platen automatic locking device of the present invention is not damaged by gas ablation and avoiding deformation and failure due to the influence of gas noise and vibration.

[0031] Optionally, it further includes a first support block 53 and a second support block 54. The first support block 53 and the second support block 54 are respectively connected to the opposite side plates of the box body 05. Through holes for the first pin 01 and the second pin 02 to pass through are provided on the first support block 53, the second support block 54, and the two side plates of the box body 05. The first support block 53 and the second support block 54 are provided to prevent the first pin 01 and the second pin 02 from being damaged due to bearing the gravity load of the platen 01.

[0032] Optionally, it further includes a second pin shaft 321, a third pin shaft 322, a fourth pin shaft 331, a fifth pin shaft 332, a sixth pin shaft 341, a seventh pin shaft 342, an eighth pin shaft 361, a ninth pin shaft 362, a first support 51, and a second support 52 that can be manually disassembled. The first support 51 and the second support 52 are respectively connected to the two side plates of the box body 05. The third connecting rod 34 and the hydraulic cylinder 36 are respectively connected to the box body 05 through the first support 51 and the second support 52. Between the first connecting rod 32 and the crank 31, between the first connecting rod 32 and the first pin 01, between the second connecting rod 33 and the crank 31, between the second connecting rod 33 and the second pin 02, between the third connecting rod 34 and the crank 31, between the third connecting rod 34 and the first support 51, between the piston rod of the hydraulic cylinder 36 and the third connecting rod 34, and between the hydraulic cylinder 36 and the second support 52 are respectively connected through the second pin shaft 321, the third pin shaft 322, the fourth pin shaft 331, the fifth pin shaft 332, the sixth pin shaft 341, the seventh pin shaft 342, the eighth pin shaft 361, and the ninth pin shaft 362. Since each pin shaft can be manually disassembled, the table board automatic locking device of the present invention has a manual redundancy measure. When the mechanism gets stuck or fails during the unlocking process, manually disassemble each pin shaft, and then disassemble each mechanism to achieve manual unlocking and ensure that the table board 04 can be opened smoothly.

[0033] Optionally, the second pin shaft 321, the third pin shaft 322, the fourth pin shaft 331, and the fifth pin shaft 332 have the same structure. The third pin shaft 322 includes a pin shaft body 3221 and a limit screw 3222. The limit screw 3222 passes through the pin shaft body 3221 radially to limit the pin shaft body 3221 and prevent the pin shaft rod from moving up and down. When the mechanism gets stuck or fails during the unlocking process, manually disassemble each limit screw to achieve manual unlocking.

[0034] Optionally, the first rotating shaft 311, the sixth pin shaft 341, the seventh pin shaft 342, the eighth pin shaft 361, and the ninth pin shaft 362 are all limited by limit plates. Among them, the first rotating shaft 311 includes a rotating shaft rod 3111 and a limit block 3112. The sixth pin shaft 341 includes a pin shaft rod 3411 and a limit block 3412. The eighth pin shaft 361 includes a pin shaft rod 3611 and a limit block 3612. The pin shaft rod 3611 and the limit block 3612 are connected to the third support 3613. As Figure 7 shown, the ninth pin shaft 362 includes a pin shaft rod 3621 and a limit block 3622. The pin shaft rod 3621 is installed on the second support 52. When the mechanism gets stuck or fails during the unlocking process, manually disassemble each limit block to achieve manual unlocking.

[0035] Optionally, both sensors 06 are connected to the bottom plate of the box body 05. The position of one sensor 06 corresponds to the position of the eighth pin shaft 361 when the first bolt 01 and the second bolt 02 are retracted, and the position of one sensor 06 corresponds to the position of the eighth pin shaft 361 when the first bolt 01 and the second bolt 02 are extended. A trigger block 3614 is connected to the bottom of the eighth pin shaft 361. When the first bolt 01 and the second bolt 02 are extended or retracted, the trigger block 3614 blocks one sensor 06, and the blocked sensor 06 transmits information to the monitoring unit.

[0036] It further includes a sensor bracket 61 and a first support plate 55. The first support plate 55 is connected to the bottom plate of the box body 05, the sensor bracket 61 is connected to the first support plate 55, both sensors 06 are connected to the sensor bracket 61, and the sensors 06 emit infrared rays. After the first bolt 01 and the second bolt 02 are retracted or extended in place, the trigger block 3614 blocks the red line to trigger one sensor 06. After the detection unit receives the information of the sensor 06, the unfolding action of the platen body 04 can be performed, so as to realize the remote monitoring of the locking device.

[0037] Optionally, it further includes a second support plate 56. The second support plate 56 is connected to the bottom plate of the box body 05. A support block 343 is connected to the bottom of the third connecting rod 34, and the first rotating shaft 311 is connected to the second support plate 56. During the locking and unlocking process, due to the gravity, the platen 01 sinks and contacts the first bolt 01 and the second bolt 02, and the locking device receives a downward load. This load is transmitted to the second support plate 56 through the first rotating shaft 311 and the support block 343, preventing the third connecting rod 34 and the crank 31 from being deformed under pressure.

[0038] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic locking device for a platen, characterized in that, It includes a first bolt (01), a second bolt (02), a bolt driving assembly (03), and two sensors (06). The sensors (06) are connected to a monitoring unit. One end of the first bolt (01) and one end of the second bolt (02) are both connecting ends, and the other end of the first bolt (01) and the other end of the second bolt (02) are both locking ends. The bolt driving assembly drives the first bolt (01) and the second bolt (02) to extend or retract synchronously. When extending, the locking ends of the first bolt (01) and the second bolt (02) are connected to the support blocks (41) of the platen to lock the platen (04). When retracting, the platen (04) is unlocked. When extending, the first bolt (01) and the second bolt (02) are coaxial. When the first bolt (01) and the second bolt (02) retract in place and when the first bolt (01) and the second bolt (02) extend in place, the two sensors (06) are respectively triggered and transmit the trigger information to the monitoring unit.

2. The platen automatic locking device according to claim 1, wherein The bolt driving assembly (03) includes a crank (31), a first connecting rod (32), a second connecting rod (33), a third connecting rod (34), a first rotating shaft (311), and a third connecting rod driving member. The position of the first rotating shaft (311) is fixed. The crank (31) is connected to the first rotating shaft (311). The first end, the second end, and the third end of the crank (31) are respectively hinged to one end of the first connecting rod (32), one end of the second connecting rod (33), and one end of the third connecting rod (34). The first rotating shaft (311) is located between the first end and the second end. The connection point between the crank (31) and the first connecting rod (32) and the connection point between the crank (31) and the second connecting rod (33) are located on both sides of the first rotating shaft (311). The other end of the first connecting rod (32) is hinged to the connecting end of the first bolt (01). The other end of the second connecting rod (33) is hinged to the connecting end of the second bolt (02). The other end of the third connecting rod (34) is hinged to the bracket. The third connecting rod driving member drives the third connecting rod (34) to swing with the connection point between the third connecting rod (34) and the bracket as the fulcrum, driving the crank (31) to rotate around the first rotating shaft (311), so as to make the first bolt (01) and the second bolt (02) extend or retract.

3. The platen automatic locking device according to claim 2, characterized in that, The third connecting rod driving member is a hydraulic cylinder (36). One end of the hydraulic cylinder (36) is hinged to the bracket, and the other end is hinged to the middle of the third connecting rod (34).

4. The platen automatic locking device according to claim 3, characterized in that, It further includes a box body (05), and the first bolt (01), the second bolt (02), and the bolt driving assembly (03) are all arranged inside the box body (05). The first rotating shaft (311) is connected to the bottom plate of the box body (05). When the first bolt (01) and the second bolt (02) extend, they pass through the opposite side plates of the box body (05). The bracket is the side of the box body (05).

5. The platen automatic locking device according to claim 4, characterized in that, It further includes a first support block (53) and a second support block (54). The first support block (53) and the second support block (54) are respectively connected to the opposite side plates of the box body (05). Through holes for the first bolt (01) and the second bolt (02) to pass through are arranged on the first support block (53), the second support block (54), and the two side plates of the box body (05).

6. The platen automatic locking device according to claim 5, characterized in that, It further includes manually detachable second pin shafts (321), third pin shafts (322), fourth pin shafts (331), fifth pin shafts (332), sixth pin shafts (341), seventh pin shafts (342), eighth pin shafts (361), ninth pin shafts (362), a first support (51), and a second support (52). The first support (51) and the second support (52) are respectively connected to the two side plates of the box body (05). The third connecting rod (34) and the hydraulic cylinder (36) are respectively connected to the box body (05) through the first support (51) and the second support (52). Between the first connecting rod (32) and the crank (31), between the first connecting rod (32) and the first bolt (01), between the second connecting rod (33) and the crank (31), between the second connecting rod (33) and the second bolt (02), between the third connecting rod (34) and the crank (31), between the third connecting rod (34) and the first support (51), between the piston rod of the hydraulic cylinder (36) and the third connecting rod (34), and between the hydraulic cylinder (36) and the second support (52) are respectively connected through the second pin shaft (321), the third pin shaft (322), the fourth pin shaft (331), the fifth pin shaft (332), the sixth pin shaft (341), the seventh pin shaft (342), the eighth pin shaft (361), and the ninth pin shaft (362).

7. The platen automatic locking device according to claim 6, characterized in that, The second pin shaft (321), the third pin shaft (322), the fourth pin shaft (331), and the fifth pin shaft (332) have the same structure. The third pin shaft (322) includes a pin shaft body (3221) and a limit screw (3222). The limit screw (3222) passes through the pin shaft body (3221) radially to limit the pin shaft body (3221).

8. The platen automatic locking device according to claim 7, characterized in that, The first rotating shaft (311), the sixth pin shaft (341), the seventh pin shaft (342), the eighth pin shaft (361), and the ninth pin shaft (362) are all limited by limit plates.

9. The platen automatic locking device according to claim 8, wherein Two of the sensors (06) are connected to the bottom plate of the box body (05). The position of one sensor (06) corresponds to the position of the eighth pin shaft (361) when the first pin (01) and the second pin (02) are retracted. The position of one sensor (06) corresponds to the position of the eighth pin shaft (361) when the first pin (01) and the second pin (02) are extended. A trigger block (3614) is connected to the bottom of the eighth pin shaft (361). When the first pin (01) and the second pin (02) are extended or retracted, the trigger block (3614) blocks the sensor (06) to trigger the sensor (06).

10. The platen automatic locking device according to claim 9, wherein It further includes a sensor bracket (61) and a first support plate (55). The first support plate (55) is connected to the bottom plate of the box body (05). The sensor bracket (61) is connected to the first support plate (55). Both of the two sensors (06) are connected to the sensor bracket (61).

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