CN116393965A - Pin puller - Google Patents

Pin puller Download PDF

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Publication number
CN116393965A
CN116393965A CN202310658573.2A CN202310658573A CN116393965A CN 116393965 A CN116393965 A CN 116393965A CN 202310658573 A CN202310658573 A CN 202310658573A CN 116393965 A CN116393965 A CN 116393965A
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CN
China
Prior art keywords
piston
pin
hole
cylinder
mounting
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.)
Pending
Application number
CN202310658573.2A
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Chinese (zh)
Inventor
请求不公布姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Lingkong Tianxing Technology Co Ltd
Original Assignee
Beijing Lingkong Tianxing Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Lingkong Tianxing Technology Co Ltd filed Critical Beijing Lingkong Tianxing Technology Co Ltd
Priority to CN202310658573.2A priority Critical patent/CN116393965A/en
Publication of CN116393965A publication Critical patent/CN116393965A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/025—For detaching only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

The invention discloses a pin puller, which relates to the technical field of aerospace equipment and comprises the following components: a piston; the piston comprises a piston cylinder, wherein a first through hole and a second through hole are respectively formed at two ends of the piston cylinder, a containing cavity is formed in the piston cylinder, and the containing cavity is matched with the piston to form a piston structure; one end of the connecting rod passes through the first through hole and is used for being connected with the limiting pin, the other end of the connecting rod is connected with one side of the piston, and the outer wall of the connecting rod is in sealing fit with the first through hole and is matched with the piston and the piston cylinder to form a first chamber; the gas cylinder is internally provided with high-pressure gas; the valve is arranged between the bottle mouth of the gas cylinder and the first chamber. When the pin puller is used in an aircraft such as a rocket, damage to devices in the rocket can be avoided.

Description

Pin puller
Technical Field
The invention relates to the technical field of aerospace equipment in general, in particular to a pin puller.
Background
After an aircraft such as a rocket is launched and lifted, a pin puller is usually used to pull out a stopper pin for connecting two components or devices in order to control the operation of the internal components. The triggering device on the existing pin puller generally adopts initiating explosive devices such as explosion bolts, but after the triggering device is adopted, high-temperature fuel gas and a high-frequency impact environment are generally generated, the high-temperature fuel gas is leaked, the pollution to other devices in a rocket is very likely to happen, the high-frequency impact environment is easy to cause abnormal operation and even damage of electrical equipment, and then the rocket is failed to launch.
In chinese patent document (CN 115743626 a), a lock release mechanism is disclosed for unlocking a pin puller, which uses a manner of detonating an igniter of the pin puller to pull out a limit pin, thereby unlocking a corresponding component. However, if the flame retardant is used in a rocket, possible damage to rocket internal devices caused by factors such as high-temperature polluting fuel gas, high-frequency impact and the like after initiating explosive devices are not overcome.
Disclosure of Invention
In view of the foregoing drawbacks or deficiencies of the prior art, it is desirable to provide a pin puller that avoids damage to rocket internal components.
The specific technical scheme is as follows:
the invention provides a separating device pin puller used in an aircraft, comprising:
a piston;
the piston comprises a piston cylinder, wherein a first through hole and a second through hole are respectively formed in two ends of the piston cylinder, the extending direction of the piston cylinder is a first direction, the first direction is the arrangement direction of the first through hole and the second through hole, a containing cavity is formed in the piston cylinder, and the containing cavity is matched with the piston to form a piston structure;
one end of the connecting rod passes through the first through hole and is used for being connected with the limiting pin, the other end of the connecting rod is connected with one side of the piston, and the outer wall of the connecting rod is in sealing fit with the first through hole and is matched with the piston and the piston cylinder to form a first chamber;
the gas cylinder is internally provided with high-pressure gas;
the valve is arranged between the bottle mouth of the gas bottle and the first chamber, and when the valve is opened, the high-pressure gas in the gas bottle is used for driving the piston to move along the first direction so as to pull out the limiting pin from the device to be unlocked.
As a further definition of the invention, the portion of the containing cavity located on the other side of the piston is provided as a second chamber;
the pin puller further includes an elastic member defined by the piston and the second through bore within the second chamber.
As a further limitation of the invention, the piston cylinder is also provided with a mounting hole, and the side surface of the piston is provided with a mounting groove corresponding to the mounting hole and forms a mounting space with the mounting hole;
the pin puller further comprises a shear pin, and the shear pin is installed in the installation space.
As a further definition of the invention, the piston has a first station and a second station, the piston being defined in the first station by the shear pin in an initial state, the piston being located in the second station when a first thrust force exerted on the piston by the high pressure gas in the first chamber is equal to a second thrust force exerted on the piston by the elastic member; the length of the locked limiting pin is smaller than or equal to the distance between the first station and the second station.
As a further limitation of the present invention, the piston further comprises a mounting rod, one end of the mounting rod is connected to the other side of the piston, and the other end of the mounting rod passes through the second through hole and protrudes to the outer side of the piston cylinder.
As a further limitation of the present invention, the present invention further comprises a mounting cover provided on the second through hole and used for mounting the elastic member, wherein the mounting cover has an inner through hole through which the other end of the mounting rod passes.
As a further limitation of the present invention, the shear pin is made of aluminum alloy.
As a further limitation of the present invention, one end of the link is hinged with the limit pin.
As a further limitation of the present invention, the high pressure gas in the cylinder is a non-contaminating gas.
As a further definition of the invention, the valve is a controlled solenoid valve.
As a further definition of the invention, the elastic member is a split impact environment reducing device.
The invention has the beneficial effects that:
the gas cylinder filled with high-pressure gas is connected with the first chamber in the piston cylinder through a pipeline, and the gas cylinder and the first chamber are isolated through the valve in the state that the valve is not triggered. The air pressure on both sides of the piston is equal at this time. The connecting rod is in sealing fit with the first through hole, and the piston and the containing cavity in the piston cylinder are formed with a piston structure, so that the first cavity is a relatively sealed space. When the valve is triggered and opened, the high-pressure gas enters the first cavity, the air pressure in the first cavity rises instantly and is larger than the air pressure on the other side of the piston, so that under the action of the high-pressure gas, the piston moves towards the other side of the piston and shears the shear pin, and the limit pin is driven by the connecting rod while moving, so that unlocking is completed. In the process, the pin puller avoids releasing high-temperature gas into the rocket, reduces the impact magnitude at the moment of separation, and further can effectively prevent damage to devices in the rocket.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a pin puller provided by the invention;
reference numerals in the drawings: 1, a piston; 2, a piston cylinder; 3, connecting rods; 4, a limiting pin; 5, a gas cylinder; 6, a valve; 7, an elastic piece; 8, shearing pins; 9, mounting a rod; and 10, installing a cover.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, a pin puller for an aircraft interior separation device according to the present embodiment includes:
a piston 1;
the piston cylinder 2, a first through hole and a second through hole are respectively formed at two ends of the piston cylinder 2, the extending direction of the piston cylinder 2 is a first direction, the first direction is the arrangement direction of the first through hole and the second through hole, a containing cavity is formed in the piston cylinder, and the containing cavity is matched with the piston 1 to form a piston structure;
the connecting rod 3, one end of the connecting rod 3 passes through the first through hole and is used for being connected with the limiting pin 4, the other end of the connecting rod is connected with one side of the piston 1, and the outer wall of the connecting rod 3 is in sealing fit with the first through hole and is matched with the piston 1 and the piston cylinder 2 to form a first cavity;
a gas cylinder 5, wherein high-pressure gas is contained in the gas cylinder 5;
the valve 6 is arranged between the bottleneck of the gas cylinder 5 and the first chamber, and when the valve 6 is opened, the high-pressure gas in the gas cylinder 5 is used for driving the piston 1 to move along the first direction so as to pull out the limiting pin 4 from the device to be unlocked.
As shown in fig. 1, the gas cylinder 5 filled with high-pressure gas is connected to the first chamber in the piston cylinder 2 through a pipeline, and in the state that the valve 6 is not triggered, the two chambers are isolated through the valve 6. The air pressure on both sides of the piston 1 is equal at this time. Since the connecting rod 3 is in sealing fit with the first through hole, and the piston 1 and the accommodating cavity in the piston cylinder 2 are formed with a piston structure, the first chamber is a relatively sealed space, wherein the first through hole is of a closed-type design as shown in fig. 1, so that when the high-pressure gas is injected into the first chamber, the piston 1 can move along the first direction. When the valve 6 is triggered and opened, the high-pressure gas will enter the first chamber, the air pressure in the first chamber rises instantaneously and is greater than the air pressure at the other side of the piston 1, so that under the action of the high-pressure gas, the piston 1 moves along the first direction, and the limiting pin 4 is driven to be pulled out of the device to be unlocked through the connecting rod 3 while moving, wherein an included angle between the pullable direction of the limiting pin 4 and the first direction is greater than 0 degree and less than 90 degrees. In fig. 1, the left end of the limiting pin 4 is connected to the device to be unlocked in a pluggable manner, the right end of the limiting pin is connected to the connecting rod 3, and when the limiting pin 4 is driven by the connecting rod 3 and moves rightward for a certain distance, the device to be unlocked on the left side can be unlocked. In the process, the pin puller avoids releasing high-temperature gas into the rocket, and further damage to devices in the rocket can be effectively prevented.
In a preferred embodiment, in which damage to the rocket interior is further prevented during unlocking, the part of the receiving chamber located on the other side of the piston 1 is provided as a second chamber;
the pin puller further comprises an elastic member 7, said elastic member 7 being defined in said second chamber by said piston 1 and said second through hole.
When the valve 6 is opened, the high-pressure gas in the gas cylinder 5 flows into the first chamber, so that the gas pressure in the first chamber rises instantaneously. In turn, the piston 1 acquires a greater instantaneous acceleration, the velocity of which gradually increases during the movement of the piston 1 towards the other side thereof, creating an impact environment upon detachment, causing the devices inside the rocket, located in the vicinity of the pin extractor, to be damaged. In this scheme, through increasing and setting up the elastic component 7 can absorb a portion of above-mentioned kinetic energy, reduce the motion of piston 1 is to the possibility of rocket internal device damage, has promoted the probability that rocket launched successfully.
In a preferred embodiment for improving the installation convenience of the pin puller, an installation hole is further formed in the piston cylinder 2, and an installation groove corresponding to the installation hole is formed in the side surface of the piston 1 and forms an installation space with the installation hole;
the pin puller further comprises a shear pin 8, and the shear pin 8 is installed in the installation space.
Before the pin puller is installed, one end of the connecting rod 3 needs to be connected to the limiting pin 4, and the limiting pin 4 is fixed at a set position to lock the device to be unlocked, and then the pin puller is installed. Since the pin puller is installed until the pin puller is triggered, the limit pin 4 is required to be prevented from being pulled out due to other disturbance, so that the shear pin 8 is installed in the installation space to enable the position of the limit pin 4 to be relatively fixed, the device to be unlocked is effectively prevented from being misunderstood to be locked, and the success rate of unlocking is improved.
Wherein in a preferred embodiment ensuring that the device to be unlocked can be successfully unlocked after the pin puller is triggered, the piston 1 has a first station and a second station, the piston 1 being limited in an initial state by the shear pin 8 in the first station, the piston 1 being located in the second station when a first thrust exerted on the piston 1 by the high pressure gas in the first chamber is equal to a second thrust exerted on the piston by the elastic member 7; the length of the locked limiting pin 4 is smaller than or equal to the distance between the first station and the second station.
As shown in fig. 1, to ensure that the stop pin 4 can be pulled out from the device to be unlocked, the stop pin 4 needs to be moved by a first set distance, and then a second set distance, which is connected with the stop pin 4 and needs to be moved by the connecting rod 3 and the piston 1, is greater than the first set distance, so as to complete successful unlocking of the device to be unlocked. It is therefore necessary to ensure that the length to which the stop pin 4 is locked is less than or equal to the distance between the first and second stations.
In a preferred embodiment for further improving the installation convenience of the pin puller, the pin puller further comprises a mounting rod 9, one end of the mounting rod 9 is connected to the other side of the piston 1, and the other end of the mounting rod 9 passes through the second through hole and extends out of the piston cylinder 2.
In order to ensure that the limit pin 4 is locked in a set position in the device to be unlocked, the piston 1 needs to be pushed to a preset position in the piston cylinder 2, and in order to facilitate the above-mentioned installation, the installation rod 9 is arranged on the other side of the piston 1. Preferably, when the piston 1 is pushed to the preset position, the length of the mounting rod 9 does not expose the second through hole too much, or the connection between the mounting rod 9 and the piston 1 is set to be detachable connection, and after the piston 1 is pushed to the preset position, the mounting rod 9 is separated from the piston 1, so that the mounting rod 9 is prevented from punching out of the second through hole when the piston 1 moves, and devices inside the rocket near the pin puller are prevented from being damaged.
In a preferred embodiment for further improving the installation convenience of the pin puller, the pin puller further comprises a mounting cover 10, wherein the mounting cover 10 is arranged on the second through hole and is used for mounting the elastic piece 7, and the mounting cover 10 is provided with an inner through hole for the other end of the mounting rod 9 to pass through.
The mounting cover 10 is used for mounting the elastic element 7 at the outlet of the second through hole, so as to provide a space as large as possible for the movement of the piston 1, thereby improving the convenience of mounting the elastic element 7 and the success rate of the pin puller in pin pulling.
In a preferred embodiment of ensuring the pin pulling success rate, the shearing pin 8 is made of aluminum alloy.
Because the hardness of the aluminum alloy is not strong, when the piston 1 moves, the piston can be easily cut off, and the pin pulling process is completed.
Wherein in a preferred embodiment of the convenience of the pin puller installation, one end of the connecting rod 3 is hinged with the limit pin 4.
The pin puller is installed after the limiting pin 4 is installed in the device to be unlocked, the installation position of the pin puller is also generally a set position, and the connecting rod 3 is hinged with the limiting pin 4, so that the connecting rod 3 is not on the extension line of the limiting pin 4, and the installation of the connecting rod 3 and the limiting pin can be completed.
In a preferred embodiment, in which the latch is prevented from causing pollution in the rocket after being triggered, the high-pressure gas in the gas cylinder 5 is a non-polluting gas. The non-polluting gas is preferably nitrogen, and can also be oxygen, carbon dioxide and the like.
In a preferred embodiment, wherein the convenience of handling the pin puller is improved, the valve 6 is a controlled solenoid valve.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present invention (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. A pin puller for use on a separation device inside an aircraft, comprising:
a piston (1);
the piston comprises a piston cylinder (2), wherein a first through hole and a second through hole are respectively formed in two ends of the piston cylinder (2), the extending direction of the piston cylinder (2) is a first direction, the first direction is the arrangement direction of the first through hole and the second through hole, a containing cavity is formed in the piston cylinder, and the containing cavity is matched with the piston (1) to form a piston structure;
one end of the connecting rod (3) passes through the first through hole and is used for being connected with the limiting pin (4), the other end of the connecting rod is connected with one side of the piston (1), and the outer wall of the connecting rod (3) is in sealing fit with the first through hole and is matched with the piston (1) and the piston cylinder (2) to form a first cavity;
a gas cylinder (5), wherein the gas cylinder (5) is internally provided with high-pressure gas;
the valve (6) is arranged between the bottle mouth of the gas bottle (5) and the first chamber, and when the valve is opened, high-pressure gas in the gas bottle (5) is used for driving the piston (1) to move along the first direction so as to pull out the limiting pin (4) from the device to be unlocked.
2. Pin puller according to claim 1, characterized in that the part of the receiving chamber located on the other side of the piston (1) is provided as a second chamber;
the pin puller further comprises an elastic member (7), the elastic member (7) being defined in the second chamber by the piston (1) and the second through hole.
3. Pin puller according to claim 2, characterized in that the piston cylinder (2) is also provided with a mounting hole, the side of the piston (1) is provided with a mounting groove corresponding to the mounting hole and forms a mounting space with the mounting hole;
the pin puller further comprises a shear pin (8), and the shear pin (8) is installed in the installation space.
4. A pin puller according to claim 3, characterized in that the piston (1) has a first station and a second station, the piston (1) being limited in an initial state by the shear pin (8) in the first station, the piston (1) being located in the second station when a first thrust exerted on the piston (1) by the high-pressure gas in the first chamber is equal to a second thrust exerted on the piston by the elastic member (7); the length of the locked limiting pin (4) is smaller than or equal to the distance between the first station and the second station.
5. Pin puller according to claim 2, characterized in that it further comprises a mounting rod (9), one end of the mounting rod (9) being connected to the other side of the piston (1), the other end of the mounting rod (9) passing through the second through hole and protruding outside the piston cylinder (2).
6. Pin puller according to claim 5, characterized in that it further comprises a mounting cover (10), said mounting cover (10) being provided on said second through hole and being adapted to mount said elastic member (7), said mounting cover (10) having an inner through hole for the other end of said mounting rod (9) to pass through.
7. Pin puller according to claim 3, characterized in that the shear pin (8) is of aluminium alloy.
8. Pin puller according to any one of claims 1-7, characterized in that one end of the connecting rod (3) is hinged to the limit pin (4).
9. Pin puller according to any one of claims 1-7, characterized in that the high pressure gas in the gas cylinder (5) is a non-contaminating gas.
10. Pin puller according to any one of claims 1-7, characterized in that the valve (6) is a controlled solenoid valve.
CN202310658573.2A 2023-06-06 2023-06-06 Pin puller Pending CN116393965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310658573.2A CN116393965A (en) 2023-06-06 2023-06-06 Pin puller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310658573.2A CN116393965A (en) 2023-06-06 2023-06-06 Pin puller

Publications (1)

Publication Number Publication Date
CN116393965A true CN116393965A (en) 2023-07-07

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ID=87016433

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310658573.2A Pending CN116393965A (en) 2023-06-06 2023-06-06 Pin puller

Country Status (1)

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CN (1) CN116393965A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105364770A (en) * 2015-09-02 2016-03-02 煤科集团沈阳研究院有限公司 Pulling-out device of hydraulic support pin shaft and pin pulling method of pulling-out device
CN109737831A (en) * 2019-02-19 2019-05-10 北京星际荣耀空间科技有限公司 A kind of non-firer's separator based on blasting bolt
CN113753268A (en) * 2021-09-07 2021-12-07 天津爱思达航天科技有限公司 Star and arrow separation unblock actor
CN113878538A (en) * 2021-10-27 2022-01-04 中北大学 Low-noise pin puller
CN218929816U (en) * 2023-02-21 2023-04-28 沈阳理工大学 Small initiating explosive device unlocking device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105364770A (en) * 2015-09-02 2016-03-02 煤科集团沈阳研究院有限公司 Pulling-out device of hydraulic support pin shaft and pin pulling method of pulling-out device
CN109737831A (en) * 2019-02-19 2019-05-10 北京星际荣耀空间科技有限公司 A kind of non-firer's separator based on blasting bolt
CN113753268A (en) * 2021-09-07 2021-12-07 天津爱思达航天科技有限公司 Star and arrow separation unblock actor
CN113878538A (en) * 2021-10-27 2022-01-04 中北大学 Low-noise pin puller
CN218929816U (en) * 2023-02-21 2023-04-28 沈阳理工大学 Small initiating explosive device unlocking device

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Application publication date: 20230707