CN112880486B - Reverse-stroke self-locking lasting torque output device - Google Patents
Reverse-stroke self-locking lasting torque output device Download PDFInfo
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- CN112880486B CN112880486B CN202110042700.7A CN202110042700A CN112880486B CN 112880486 B CN112880486 B CN 112880486B CN 202110042700 A CN202110042700 A CN 202110042700A CN 112880486 B CN112880486 B CN 112880486B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/46—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances
Abstract
The invention discloses a reverse stroke self-locking lasting torque output device, wherein an expanded polytetrafluoroethylene sealing ring is positioned in a first double-step hole of a cover plate with a hole, the outer side surface of the expanded polytetrafluoroethylene sealing ring is contacted with the inner side surface of a first middle hole of the cover plate with the hole, the upper end surface of the expanded polytetrafluoroethylene sealing ring is contacted with the lower end surface edge of a second middle cylinder with a torque screw, and the lower end surface of the expanded polytetrafluoroethylene sealing ring is contacted with a first concentric circular plane of the cover plate with the hole; the invention avoids the surface of the expanded polytetrafluoroethylene sealing ring from being scratched and sheared and damaged, ensures the reliability of sealing at the technical hole and ensures the reliable exertion of the functions of the warhead. In addition, the bolt is provided with lasting torque, and when the expanded polytetrafluoroethylene sealing ring is loosened, the bolt continuously compresses the expanded polytetrafluoroethylene sealing ring to extrude the expanded polytetrafluoroethylene sealing ring for a long time, so that a lasting tight attaching effect is generated, and a lasting sealing effect is ensured.
Description
Technical Field
The invention belongs to the technical field of torque output devices, relates to a durable torque output device, and particularly relates to a reverse stroke self-locking durable torque output device.
Background
The liquid-phase charging warhead is internally filled with high-energy fuel, the high-energy fuel is thrown into the air to be mixed with the air to form a large-range active cloud cluster under the explosive explosion throwing driving action, and the active cloud cluster generates body detonation and releases strong shock waves after secondary detonation of the explosive, so that the liquid-phase charging warhead is one of the most powerful non-nuclear weapons. The high-energy fuel contains liquid-phase materials, so that the liquid-phase charging warhead needs to meet the sealing requirement.
The cover plate of the warhead is often provided with a plurality of fabrication holes, namely, small holes meeting the use requirements of the warhead, for example, when high-energy fuel is filled, the fabrication holes can be used for exhausting and observing, and for example, in order to improve the rigidity of internal parts, the exterior of the fabrication holes are connected with the internal parts through screws. The process hole is required to be sealed after being used. The threaded connection is simple and reliable, is convenient to adjust and disassemble for many times without replacement, occupies small volume and is one of the most common mechanical connection modes. The fabrication hole is processed with internal thread and is sealed by screw thread connection with the screw.
The high-energy liquid phase fuel has strong corrosivity, and various rubber materials are subjected to chemical reaction with the high-energy liquid phase fuel to lose effectiveness. Zhang Yu Guo et al reported a new technology of polytetrafluoroethylene in "development and application of expanded polytetrafluoroethylene" (2014, proceedings of the national engineering plastics composite materials technology symposium, 2014, page 321), the polytetrafluoroethylene material is formed into fiber shape by stretching to form the expanded polytetrafluoroethylene material, the expanded polytetrafluoroethylene has the same chemical property with the polytetrafluoroethylene, is a high molecular material with excellent comprehensive performance, and does not react with high-energy liquid phase fuel. An expanded polytetrafluoroethylene sealing ring is arranged at the end face where the screw is in threaded connection with the fabrication hole, the thickness of the hole-carrying cover plate of the warhead is 11-13 mm, the specification of the screw is M6, the inner diameter of the expanded polytetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, the expansion pressure of the high-energy fuel body in the liquid-phase charging warhead is not more than 0.4MPa, and the expanded polytetrafluoroethylene sealing ring is compressed after the screw is screwed down to realize sealing.
What happens to the screw in the threaded hole is a compound movement of a rotational movement and an axial feed movement, which is characteristic of a threaded connection. When the compression amount of the expanded polytetrafluoroethylene sealing ring is about 10%, the sealing effect can be met. Screw is from contact inflation polytetrafluoroethylene sealing washer when compressing it to the compression volume, need clockwise rotation about 80, inflation polytetrafluoroethylene sealing washer and screw are about to have 7 mm's relative motion distance on the hoop on the contact, the screw is to the inflation polytetrafluoroethylene sealing washer carry out shearing action and frictional action on the relative motion distance, frictional action causes inflation polytetrafluoroethylene sealing washer surface fish tail to appear, the department of scratching will lead to the leakage risk, shearing action makes inflation polytetrafluoroethylene sealing washer take place the shear displacement, the shear displacement causes sealing washer shear deformation, too big shear deformation leads to the sealing washer to cut and destroys, lose sealed effect. Once a leak occurs at the fabrication hole, the warhead fails. In addition, the expanded polytetrafluoroethylene has poor resilience, namely, the expanded polytetrafluoroethylene is easy to generate permanent deformation after being compressed and cannot be recovered to the original size, and when the expanded polytetrafluoroethylene sealing ring is loosened, the expanded polytetrafluoroethylene sealing ring cannot be tightly attached to mechanical parts, so that leakage occurs.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention provides the reverse-stroke self-locking durable torque output device, which avoids the surface of an expanded polytetrafluoroethylene sealing ring from being scratched and sheared and damaged, ensures the reliability of sealing at a technical hole and ensures the reliable exertion of the functions of a warhead. In addition, the bolt is provided with lasting torque, and when the expanded polytetrafluoroethylene sealing ring is loosened, the bolt continuously compresses the expanded polytetrafluoroethylene sealing ring to carry out lasting extrusion on the expanded polytetrafluoroethylene sealing ring, so that a lasting tight attaching effect is generated, and a lasting sealing effect is ensured.
The invention provides a reverse stroke self-locking durable torque output device. The expanded polytetrafluoroethylene sealing ring comprises an expanded polytetrafluoroethylene sealing ring 3, and is characterized by further comprising a cover plate 1 with a hole and a screw 2 with torque;
the shape of the cover plate with the hole 1 is a first circular plate, the first circular plate of the cover plate with the hole 1 is provided with a first double-step hole, the first double-step hole of the cover plate with the hole 1 is respectively composed of a first upper end hole, a first middle hole and a first lower end hole from top to bottom, the inner diameter of the first upper end hole of the cover plate with the hole 1 is larger than that of the first middle hole, the inner diameter of the first middle hole of the cover plate with the hole 1 is larger than that of the first lower end hole, the step surface between the first middle hole and the first lower end hole of the cover plate with the hole 1 is a first concentric circular plane, the inner side surface of the first lower end hole of the cover plate with the hole 1 is provided with a first internal thread, the first internal thread of the cover plate with the hole 1 is a four-line thread, the inner side surface of the first upper end hole of the cover plate with the hole 1 is provided with a first inclined V-shaped groove which is uniformly distributed in the circumferential direction, the extending direction of the first inclined V-shaped groove of the cover plate with the hole 1 is parallel to the axis of the first double-step hole, the first inclined V-shaped groove of the cover plate with the hole 1 is composed of two surfaces, the surface of the two surfaces of the first inclined V-shaped groove of the perforated cover plate 1, which is positioned on the anticlockwise side of the overlooking direction of the perforated cover plate 1, is coplanar with the axis of the first double-step hole;
the invention aims to plug and seal the technical hole of the cover plate with the hole 1, wherein the nominal diameter of a first internal thread of the cover plate with the hole 1 is M6, the volume expansion pressure of the liquid material at the lower end is not more than 0.4MPa, the thickness of the cover plate with the hole 1 is 11-13 mm, and the central axis of the first double-step hole of the cover plate with the hole 1 is vertical to the ground;
the screw 2 with torque is a revolving body, the screw 2 with torque is made of spring steel, the screw 2 with torque is composed of four parts from top to bottom, the screw 2 with torque is respectively a second upper end cylinder, a second middle connecting rod, a second middle cylinder and a second lower end cylinder from top to bottom, the diameter of the second upper end cylinder of the screw 2 with torque is larger than that of the second middle cylinder, the diameter of the second middle cylinder of the screw 2 with torque is larger than that of the second lower end cylinder, a second hexagonal groove is arranged in the middle of the upper end surface of the second upper end cylinder of the screw 2 with torque, second rectangular bosses are uniformly distributed in the circumferential direction on the outer side cylindrical surface of the second upper end cylinder of the screw 2 with torque, the number of the second middle connecting rods with torque 2 is ten, and the axis of the second middle connecting rod with torque 2 is parallel to the axis of the revolving body with torque 2, the second middle connecting rod with the torque screw 2 is uniformly arranged around the axis of the revolving body with the torque screw 2 in the circumferential direction, the outer side cylindrical surface of the second lower end cylinder with the torque screw 2 is provided with a second external thread, and the second external thread with the torque screw 2 is a four-line thread;
the axis of a rotary body with a torque screw 2 is superposed with the axis of a first double-step hole of a perforated cover plate 1, the torque screw 2 is positioned in the first double-step hole of the perforated cover plate 1, a second external thread of the torque screw 2 is in screw fit connection with a first internal thread of the perforated cover plate 1, the outer side surface of a second middle cylinder with the torque screw 2 is in clearance fit with the inner side surface of the first middle hole of the perforated cover plate 1, a second rectangular boss with the torque screw 2 is positioned in a first inclined V-shaped groove of the perforated cover plate 1, the torque screw 2 is used for plugging a process hole on a cover plate of a fighting part, and the second middle cylinder with the torque screw 2 is provided with a lasting clockwise torque;
the expanded polytetrafluoroethylene sealing ring 3 is in a third circular ring shape, the third circular ring body of the expanded polytetrafluoroethylene sealing ring 3 is a revolving body, the expanded polytetrafluoroethylene sealing ring 3 is made of expanded polytetrafluoroethylene, and the revolving section of the third circular ring body of the expanded polytetrafluoroethylene sealing ring 3 is rectangular;
the axis of the revolving body of the expanded polytetrafluoroethylene sealing ring 3 is superposed with the axis of the revolving body with the torque screw 2, the expanded polytetrafluoroethylene sealing ring 3 is positioned in a first double-step hole of the cover plate 1 with the hole, the outer side surface of an expanded polytetrafluoroethylene sealing ring 3 is in contact with the inner side surface of a first middle hole of a cover plate 1 with a hole, the upper end surface of the expanded polytetrafluoroethylene sealing ring 3 is in contact with the edge of the lower end surface of a second middle cylinder with a torque screw 2, the lower end surface of the expanded polytetrafluoroethylene sealing ring 3 is in contact with a first concentric circular plane of the cover plate 1 with the hole, the expanded polytetrafluoroethylene sealing ring 3 is a sealing ring for plugging a technical hole in a warhead cover plate, the expanded polytetrafluoroethylene sealing ring 3 does not react with liquid-phase fuel, the inner diameter of the expanded polytetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded polytetrafluoroethylene sealing ring is 9.4-9.6 mm, and the thickness of the expanded polytetrafluoroethylene sealing ring is 4.2-4.6 mm;
the lead of the second external thread of the screw 2 with the torque is 13-15 mm;
the number of the first inclined V-shaped grooves of the cover plate with holes 1 is the same as that of the second rectangular bosses with the torque screws 2, and the number of the first inclined V-shaped grooves of the cover plate with holes 1 is 36-42;
the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is 1.2-1.4 mm;
the diameter of the second middle connecting rod with the torque screw 2 is 0.8-1.0 mm;
the application method of the reverse stroke self-locking durable torque output device comprises the following steps:
step 1: assembling an expanded polytetrafluoroethylene sealing ring 3 with a cover plate 1 with a hole;
and 2, step: assembling the screw 2 with torque and the cover plate 1 with holes;
and step 3: by an internal hexagonal wrench, clockwise torque is applied to a second hexagonal groove of the torque-bearing screw 2, a second upper end cylinder of the torque-bearing screw 2 transmits the torque to a second middle connecting rod, the second middle connecting rod of the torque-bearing screw 2 transmits the torque to a second middle cylinder, the second middle cylinder of the torque-bearing screw 2 transmits the torque to a second lower end cylinder, a second external thread of the torque-bearing screw 2 is in threaded fit connection with a first internal thread of the cover plate 1 with the hole more tightly and generates axial force, and the torque-bearing screw 2 compresses the expanded polytetrafluoroethylene sealing ring 3 and realizes sealing;
and 4, step 4: the second rectangular boss with the torque screw 2 can rotate clockwise along the first inclined V-shaped groove of the perforated cover plate 1, the clockwise rotation is not clamped, therefore, the clockwise rotation of the torque screw 2 is smooth, the second rectangular boss with the torque screw 2 can not rotate clockwise along the first inclined V-shaped groove of the perforated cover plate 1, the anticlockwise rotation is clamped, the anticlockwise rotation of the torque screw 2 is self-locking, after the clockwise rotation of the torque screw 2, the second middle cylinder with the torque screw 2 is twisted to generate clockwise torque, the reverse rotation of the second rectangular boss with the torque screw 2 is clamped by the first inclined V-shaped groove of the perforated cover plate 1 to realize self-locking, therefore, the torque in the second middle cylinder with the torque screw 2 is durable, and the compression of the expanded polytetrafluoroethylene sealing ring 3 with the torque screw 2 is durable, the sealing performance of the expanded polytetrafluoroethylene sealing ring 3 is durable.
Regarding the lead of the second male thread of the torque screw 2, the number of the first oblique V-shaped grooves of the holed cover plate 1, the thickness of the second rectangular boss of the torque screw 2 in the circumferential direction of the torque screw 2, and the diameter of the second middle connection rod of the torque screw 2, any of the following 2 ways may be adopted:
implementation mode 1: the lead of the second external thread of the torque screw 2 is 13 mm;
the number of the first inclined V-shaped grooves of the cover plate 1 with the holes is 36;
the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is 1.2 mm;
the diameter of the second middle connecting rod with the torque screw 2 is 0.8 mm;
implementation mode 2: the lead of the second external thread of the torque screw 2 is 15 mm;
the number of the first inclined V-shaped grooves of the cover plate 1 with the holes is 42;
the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is 1.4 mm;
the diameter of the second middle connecting rod with the torque screw 2 is 1.0 mm;
the invention discloses a reverse stroke self-locking lasting torque output device, which brings the following technical effects:
the thread specification of the technical hole on the cover plate of the liquid-phase loading warhead applicable to the invention is M6, the thickness of the cover plate with the hole on the warhead is 11-13 mm, the inner diameter of the expanded tetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, and the expansion pressure of the high-energy fuel body in the liquid-phase loading warhead is not more than 0.4 MPa. In addition, the bolt is provided with lasting torque, and when the expanded polytetrafluoroethylene sealing ring is loosened, the bolt continuously compresses the expanded polytetrafluoroethylene sealing ring to extrude the expanded polytetrafluoroethylene sealing ring for a long time, so that a lasting tight attaching effect is generated, and a lasting sealing effect is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a reverse stroke self-locking permanent torque output device. 1. The sealing ring comprises a cover plate with a hole, 2 a screw with torque, 3 an expanded polytetrafluoroethylene sealing ring.
Detailed Description
The present invention is further described in detail with reference to the drawings and examples, it should be noted that the present invention is not limited to the following examples, and equivalent changes based on the technical scheme of the present invention are within the scope of the present invention.
Example 1:
as shown in fig. 1, the present embodiment provides a reverse stroke self-locking durable torque output device. The expanded polytetrafluoroethylene sealing ring comprises an expanded polytetrafluoroethylene sealing ring 3, and is characterized by further comprising a cover plate 1 with a hole and a screw 2 with torque;
the shape of the cover plate 1 with the hole is a first circular plate, the first circular plate of the cover plate 1 with the hole is provided with a first double-step hole, the first double-step hole of the cover plate 1 with the hole is respectively composed of a first upper end hole, a first middle hole and a first lower end hole from top to bottom, the inner diameter of the first upper end hole of the cover plate 1 with the hole is larger than the inner diameter of the first middle hole, the inner diameter of the first middle hole of the cover plate 1 with the hole is larger than the inner diameter of the first lower end hole, the step surface between the first middle hole and the first lower end hole of the cover plate 1 with the hole is a first concentric circular plane, the inner side surface of the first lower end hole of the cover plate 1 with the hole is provided with a first internal thread, the first internal thread of the cover plate 1 with the hole is a four-line thread, the inner side surface of the first upper end hole of the cover plate 1 with the hole is provided with a first oblique V-shaped groove which is uniformly distributed in the circumferential direction, the extending direction of the first oblique V-shaped groove of the cover plate 1 with the hole is parallel to the axis of the first double-step hole, and the first oblique V-shaped groove of the cover plate 1 with the cover plate is composed of the first oblique V-shaped groove, the surface of the two surfaces of the first inclined V-shaped groove of the perforated cover plate 1, which is positioned on the anticlockwise side of the overlooking direction of the perforated cover plate 1, is coplanar with the axis of the first double-step hole;
the invention aims to plug and seal the technical hole of the cover plate with the hole 1, wherein the nominal diameter of a first internal thread of the cover plate with the hole 1 is M6, the volume expansion pressure of the liquid material at the lower end is not more than 0.4MPa, the thickness of the cover plate with the hole 1 is 11-13 mm, and the central axis of the first double-step hole of the cover plate with the hole 1 is vertical to the ground;
the torque screw 2 is a revolving body, the torque screw 2 is made of spring steel, the torque screw 2 is composed of four parts from top to bottom, the torque screw 2 is respectively a second upper end cylinder, a second middle connecting rod, a second middle cylinder and a second lower end cylinder from top to bottom, the diameter of the second upper end cylinder with the torque screw 2 is larger than that of the second middle cylinder, the diameter of the second middle cylinder with the torque screw 2 is larger than that of the second lower end cylinder, a second hexagonal groove is arranged in the middle of the upper end surface of the second upper end cylinder with the torque screw 2, second rectangular bosses are uniformly distributed in the circumferential direction on the outer side cylindrical surface of the second upper end cylinder with the torque screw 2, the number of the second middle connecting rods with the torque screw 2 is ten, and the axis of the second middle connecting rods with the torque screw 2 is parallel to the axis of the revolving body with the torque screw 2, the second middle connecting rod with the torque screw 2 is uniformly arranged around the axis of the revolving body with the torque screw 2 in the circumferential direction, the outer side cylindrical surface of the second lower end cylinder with the torque screw 2 is provided with a second external thread, and the second external thread with the torque screw 2 is a four-line thread;
the axis of a rotary body with a torque screw 2 is superposed with the axis of a first double-step hole of a perforated cover plate 1, the torque screw 2 is positioned in the first double-step hole of the perforated cover plate 1, a second external thread of the torque screw 2 is in screw fit connection with a first internal thread of the perforated cover plate 1, the outer side surface of a second middle cylinder with the torque screw 2 is in clearance fit with the inner side surface of the first middle hole of the perforated cover plate 1, a second rectangular boss with the torque screw 2 is positioned in a first inclined V-shaped groove of the perforated cover plate 1, the torque screw 2 is used for plugging a process hole on a cover plate of a fighting part, and the second middle cylinder with the torque screw 2 is provided with a lasting clockwise torque;
the expanded polytetrafluoroethylene sealing ring 3 is in a third circular ring shape, the third circular ring body of the expanded polytetrafluoroethylene sealing ring 3 is a revolving body, the expanded polytetrafluoroethylene sealing ring 3 is made of expanded polytetrafluoroethylene, and the revolving section of the third circular ring body of the expanded polytetrafluoroethylene sealing ring 3 is rectangular;
the axis of the revolving body of the expanded polytetrafluoroethylene sealing ring 3 is superposed with the axis of the revolving body with the torque screw 2, the expanded polytetrafluoroethylene sealing ring 3 is positioned in a first double-step hole of the cover plate 1 with the hole, the outer side surface of an expanded polytetrafluoroethylene sealing ring 3 is in contact with the inner side surface of a first middle hole of a cover plate 1 with a hole, the upper end surface of the expanded polytetrafluoroethylene sealing ring 3 is in contact with the edge of the lower end surface of a second middle cylinder with a torque screw 2, the lower end surface of the expanded polytetrafluoroethylene sealing ring 3 is in contact with a first concentric circular plane of the cover plate 1 with the hole, the expanded polytetrafluoroethylene sealing ring 3 is a sealing ring for plugging a technical hole in a warhead cover plate, the expanded polytetrafluoroethylene sealing ring 3 does not react with liquid-phase fuel, the inner diameter of the expanded polytetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded polytetrafluoroethylene sealing ring is 9.4-9.6 mm, and the thickness of the expanded polytetrafluoroethylene sealing ring is 4.2-4.6 mm;
the using method and the working principle of the invention are as follows:
the application method of the reverse stroke self-locking durable torque output device comprises the following steps:
step 1: assembling an expanded polytetrafluoroethylene sealing ring 3 with a cover plate 1 with a hole;
step 2: assembling the screw 2 with torque and the cover plate 1 with holes;
and 3, step 3: by an internal hexagonal wrench, clockwise torque is applied to a second hexagonal groove of the torque-bearing screw 2, a second upper end cylinder of the torque-bearing screw 2 transmits the torque to a second middle connecting rod, the second middle connecting rod of the torque-bearing screw 2 transmits the torque to a second middle cylinder, the second middle cylinder of the torque-bearing screw 2 transmits the torque to a second lower end cylinder, a second external thread of the torque-bearing screw 2 is in threaded fit connection with a first internal thread of the cover plate 1 with the hole more tightly and generates axial force, and the torque-bearing screw 2 compresses the expanded polytetrafluoroethylene sealing ring 3 and realizes sealing;
and 4, step 4: the second rectangular boss with the torque screw 2 can rotate clockwise along the first oblique V-shaped groove of the perforated cover plate 1, clockwise rotation is not clamped, therefore, clockwise rotation of the torque screw 2 is smooth, the second rectangular boss with the torque screw 2 can not rotate clockwise along the first oblique V-shaped groove of the perforated cover plate 1, anticlockwise rotation is clamped, anticlockwise rotation of the torque screw 2 is self-locking, after clockwise rotation of the torque screw 2, the second middle cylinder of the torque screw 2 is twisted to generate clockwise torque, and since reverse rotation of the second rectangular boss with the torque screw 2 is clamped by the first oblique V-shaped groove of the perforated cover plate 1 and self-locked, therefore, torque in the second middle cylinder of the torque screw 2 is persistent, compression of the expanded polytetrafluoroethylene sealing ring 3 of the torque screw 2 is persistent, the sealing property of the expanded polytetrafluoroethylene sealing ring 3 is durable.
The working principle of the invention is as follows:
the screw connection is characterised by a combined rotary and axial movement of the screw which compresses the sealing ring to effect sealing, which is beneficial, and the rotary movement of the screw shears the friction sealing ring, which is detrimental. The seal ring is sheared, so that scratches appear on the surface of the seal ring, the seal ring is damaged due to overlarge shearing deformation, and the sealing effect is lost. For a conventional M6 screw, the lead is 1mm, that is, for each rotation of the M6 screw, the M6 screw moves 1mm axially, that is, if the M6 screw needs to move 1mm axially to compress the sealing ring, the M6 screw needs to rotate 360 degrees, that is, the M6 screw and the sealing ring have 360 degrees of relative movement, which is a source of damage to the sealing ring.
The screw lead is increased, when the lead is increased by 15mm, the axial advancing distance is 1mm after the screw rotates for 360 degrees every time, and is about 15 times of the screw in the original scheme. I.e. the same amount of compression is applied to the sealing ring, the angle of rotation of the screw is about one-fifteenth of the original scheme. The problem to be solved by the invention is that in the original scheme, the compression amount of the sealing ring is about 10%, the screw needs to rotate clockwise about 80 degrees, the relative movement distance of about 7mm is about 7mm in the circumferential direction on the contact surface of the sealing ring and the screw, when the anti-theft lock is used, the compression amount of the sealing ring is about 10%, the screw needs to rotate clockwise about 5 degrees, the relative movement distance of about 0.5mm in the circumferential direction on the contact surface of the sealing ring and the screw is greatly reduced, the shearing action and the friction action of the screw on the sealing ring in the circumferential direction are greatly reduced, the scratch and the shearing damage on the surface of the sealing ring are avoided, the sealing reliability of the technical hole is ensured, and the reliable exertion of the functions of the warhead is ensured.
The lead increase has a fatal problem that the larger the lead of the thread, the worse the self-locking capability. Most screws need to have self-locking. That is, after the screw is tightened, the screw cannot be loosened automatically, that is, after the screw is tightened, an axial force is generated, and the axial force cannot drive the screw to rotate anticlockwise so as to be loosened. The self-locking capacity of the screw is increased along with the decrease of the lead, and the self-locking capacity of the screw is decreased along with the increase of the lead, so that the screw can rotate anticlockwise under the action of axial force, and the screw does not have the function which the screw should have, and therefore the screw cannot be used independently. The M6 screw has greatly increased thread pitch, and the screw immediately rotates anticlockwise and loosens as long as external force disappears after the screw is screwed down, so the second middle connecting rod uniformly distributed in the circumferential direction is arranged between the screw and the head, the second middle connecting rod can elastically deform, and the second middle connecting rod can keep continuous torque after elastic deformation, so the screw 2 with torque is prevented from loosening, and the other problem of increasing the screw lead is that the thread meshing contact surface between the screw and a threaded hole is reduced, namely the thread meshing force between the screw and the threaded hole is reduced, the single thread of the conventional screw is changed into the four-thread, namely 4 threads which are parallel to each other are arranged on the outer side of the screw, the thread meshing contact surface area between the screw and the threaded hole is increased, the capacity of transmitting force is increased, and the expanded polytetrafluoroethylene sealing ring can be better compressed, the sealing reliability is improved.
In addition, the expanded polytetrafluoroethylene has the defect of peristalsis, namely after excessive compression, the expanded polytetrafluoroethylene loses the elastic rebound effect, generates permanent deformation, cannot be tightly attached to adjacent metal parts and loses the sealing effect.
The second middle connecting rod of the invention is twisted to generate torque and permanently keep the torque effect, when the expanded polytetrafluoroethylene sealing ring wriggles, the screw 2 with the torque can continuously compress the expanded polytetrafluoroethylene sealing ring 3 to be tightly attached again due to the existence of the torque, and the durable sealing effect is generated
The second rectangular boss with the torque screw 2 is positioned in the first oblique V-shaped groove of the perforated cover plate 1, the first oblique V-shaped groove of the perforated cover plate 1 is composed of two surfaces, the surface positioned on the anticlockwise side of the overlooking direction of the perforated cover plate 1 in the two surfaces of the first oblique V-shaped groove of the perforated cover plate 1 is coplanar with the axis of the first double-step hole, the surface positioned on the anticlockwise side of the overlooking direction of the perforated cover plate 1 in the two surfaces of the first oblique V-shaped groove of the perforated cover plate 1 is parallel to the second rectangular boss with the torque screw 2, therefore,
the second rectangular boss of the torque screw 2 can be clamped by the surface of the two surfaces of the first inclined V-shaped groove of the perforated cover plate 1, which is positioned on the counterclockwise side of the overlooking direction of the perforated cover plate 1, the torque screw 2 cannot rotate counterclockwise, and the counterclockwise rotation of the torque screw 2 is the reverse stroke, so that the reverse stroke of the torque screw 2 is self-locked.
The surface of the two surfaces of the first inclined V-shaped groove of the perforated cover plate 1, which is positioned on the clockwise side in the overlooking direction of the perforated cover plate 1, and the second rectangular boss with the torque screw 2 have a certain included angle, and the included angle is smaller, so that the second rectangular boss with the torque screw 2 can slide along the surface of the two surfaces of the first inclined V-shaped groove of the perforated cover plate 1, which is positioned on the clockwise side in the overlooking direction of the perforated cover plate 1,
the second rectangular boss of the torque screw 2 cannot be locked by the surface located on the clockwise side in the overlooking direction of the holed cover plate 1 in the two surfaces of the first inclined V-shaped groove of the holed cover plate 1, the torque screw 2 can rotate clockwise, and the clockwise rotation of the torque screw 2 is a forward stroke, so that the forward stroke of the torque screw 2 is smooth.
Therefore, the screw 2 with the torque can only rotate clockwise and then generate larger torque through reverse stroke self-locking and smooth forward stroke, and the reverse stroke self-locking cannot move in the reverse stroke, so that the torque can be saved and a continuous torsion effect can be generated.
When the lead of the second external thread of the screw 2 with the torque is too small, the screw 2 with the torque compresses the expanded polytetrafluoroethylene sealing ring 3 to generate the same compression amount, the torsion angle of the screw 2 with the torque is too large, the relative movement distance between the screw 2 with the torque and the expanded polytetrafluoroethylene sealing ring 3 is too large, the shearing friction distance is too large, and shearing damage and scratches are easily generated to cause leakage; when the lead of the second external thread of the screw 2 with torque is too large, the axial force generated by the same torque is too small, the compression force for compressing the expanded polytetrafluoroethylene sealing ring 3 is too small, and the sealing reliability is too low. Through a large amount of experiments, when the helical pitch of taking the second external thread of moment of torsion screw 2 was 13 ~ 15mm, above-mentioned problem all can be avoided, and above-mentioned function all can be realized, satisfies the operation requirement.
In the present embodiment, the lead of the second external thread of the torque screw 2 is 13 mm;
the number of the first inclined V-shaped grooves of the cover plate with the holes 1 is the same as that of the second rectangular bosses with the torque screws 2. When the number of the first inclined V-shaped grooves of the cover plate with the holes 1 is too small, the angles of the two adjacent first inclined V-shaped grooves are too large, and the screws 2 with the torques are clamped by the first inclined V-shaped grooves, so that the screws 2 with the torques are positioned at the angles of the first inclined V-shaped grooves, if the angles of the two adjacent first inclined V-shaped grooves are too large, the screws 2 with the torques cannot be clamped on the next first inclined V-shaped groove and can only be clamped in the last first inclined V-shaped groove, the torsional angle is too small, the generated torque is too small, the adjustable creeping effect is too small, and the effect of the invention is lost; when the number of the first inclined V-shaped grooves of the perforated cover plate 1 is too large, the angle of the first inclined V-shaped groove of the perforated cover plate 1 is too small, the size of the first inclined V-shaped groove of the perforated cover plate 1 is too small, the first inclined V-shaped groove of the perforated cover plate 1 is too shallow, the capability of clamping the second rectangular boss of the main belt torque screw 2 is reduced, once the main belt torque screw cannot be clamped, the reverse stroke cannot be self-locked, and the effect of the invention is lost. A large number of experiments show that the problems can be avoided when the number of the first inclined V-shaped grooves of the cover plate with the holes 1 is 36-42, the functions can be realized, and the use requirements are met.
In this embodiment, the number of the first inclined V-shaped grooves of the cover plate with holes 1 is 36;
when the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is too thick, the rigidity is too large, the capacity of the second rectangular boss with the torque screw 2 for generating elastic deformation is too low, once the second rectangular boss with the torque screw 2 cannot perfectly exert elastic deformation, the second rectangular boss with the torque screw 2 can be clamped clockwise, the positive stroke of the torque screw 2 is also self-locked, and the effect of the invention is lost.
When the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is too thin, the rigidity is too small, the second rectangular boss with the torque screw 2 has too strong capability of generating elastic deformation and is too easy to deform, once the second rectangular boss with the torque screw 2 has too strong capability of generating deformation, the second rectangular boss with the torque screw 2 can also rotate in the anticlockwise direction through the elastic deformation, the reverse stroke of the torque screw 2 also has no self-locking effect, and the effect of the invention is lost. Through a large amount of experiments, the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the second rectangular boss with the torque screw 2 is 1.2-1.4 mm, the problems can be avoided, the functions can be realized, and the use requirement is met.
In the embodiment, the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is 1.2 mm;
if the diameter of the second middle connecting rod with the torque screw 2 is too small, the strength of the second middle connecting rod with the torque screw 2 is too poor, and the second middle connecting rod with the torque screw 2 is damaged by an excessive torsional moment. Therefore, excessive torque cannot be conserved in the second intermediate connecting rod of the torqued screw 2. When the diameter of the second middle connecting rod with the torque screw 2 is too large, the rigidity of the second middle connecting rod with the torque screw 2 is too large, the capacity of elastic deformation which can occur in the second middle connecting rod with the torque screw 2 is too poor, the rotating angle of the second middle connecting rod with the torque screw 2 is too small under the same torque, once the expanded polytetrafluoroethylene sealing ring is deformed in a creeping manner, the expanded polytetrafluoroethylene sealing ring needs to be continuously extruded by the rotating motion of the torque screw 2 to generate a sealing effect, and if the torque screw 2 rotates, the creeping of the polytetrafluoroethylene sealing ring cannot be further compensated. Only take the second middle part connecting rod elastic capacity of moment of torsion screw 2 good, take the rotatory back of moment of torsion screw 2, take the second middle part connecting rod of moment of torsion screw 2 to have the elastic effect, there is continuous moment of torsion in addition, and this just can produce lasting sealed effect. Through a large amount of experiments, the diameter of the second middle connecting rod with the torque screws 2 is 0.8-1.0 mm, the problems can be avoided, the functions can be realized, and the use requirement is met.
In this embodiment, the diameter of the second middle connecting rod of the torque screw 2 is 0.8 mm;
processing 100 liquid-phase powder-filled warhead cover plates, wherein the specification of a process hole thread is M6, the thickness of a warhead perforated plate is 11-13 mm, the inner diameter of an expanded tetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, the expansion pressure of a high-energy fuel body in the liquid-phase powder-filled warhead is not more than 0.4MPa, wherein 50 warhead perforated cover plates are sealed by the original scheme, the other 50 perforated cover plates are sealed by the device provided by the invention, liquid-phase fuel is filled in the warhead, the temperature is increased to 70 ℃, and the warhead is kept for two months. The original solution had 50 warhead perforated covers, of which 5 had leaked. The 50 perforated cover plates in the present invention were all well sealed.
The invention discloses a reverse-stroke self-locking durable torque output device, which brings technical effects that:
the thread specification of a technical hole on a cover plate of a liquid-phase powder-filled warhead is M6, the thickness of a plate with a hole cover of the warhead is 11-13 mm, the inner diameter of an expanded tetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, and the expansion pressure of a high-energy fuel body in the liquid-phase powder-filled warhead is not more than 0.4 MPa. In addition, the bolt is provided with lasting torque, and when the expanded polytetrafluoroethylene sealing ring is loosened, the bolt continuously compresses the expanded polytetrafluoroethylene sealing ring to carry out lasting extrusion on the expanded polytetrafluoroethylene sealing ring, so that a lasting tight attaching effect is generated, and a lasting sealing effect is ensured.
Example 2:
example 2 differs from example 1 in that:
in the present embodiment, the lead of the second external thread of the torque screw 2 is 15 mm;
in this embodiment, the number of the first inclined V-shaped grooves of the cover plate with holes 1 is 42;
in the embodiment, the thickness of the second rectangular boss with the torque screw 2 along the circumferential direction of the torque screw 2 is 1.4 mm;
in this embodiment, the diameter of the second middle connecting rod of the torque screw 2 is 1.0 mm;
the method is characterized in that 100 liquid-phase loading warhead cover plates are processed, the specification of a process hole thread is M6, the thickness of a warhead perforated plate is 11-13 mm, the inner diameter of an expanded tetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, the expansion pressure of a high-energy fuel body in the liquid-phase loading warhead is not more than 0.4MPa, 50 warhead perforated cover plates are sealed by the original scheme, the other 50 perforated cover plates are sealed by the device provided by the invention, liquid-phase fuel is filled in the warhead, the temperature is increased to 70 ℃, and the warhead is kept for two months. In the original scheme, 50 warheads are provided with perforated cover plates, and 4 of the warheads are leaked. The 50 perforated cover plates of the present invention were all well sealed.
The invention discloses a reverse-stroke self-locking durable torque output device, which brings technical effects that:
the thread specification of the technical hole on the cover plate of the liquid-phase loading warhead applicable to the invention is M6, the thickness of the cover plate with the hole on the warhead is 11-13 mm, the inner diameter of the expanded tetrafluoroethylene sealing ring is 6.3-6.5 mm, the outer diameter of the expanded tetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded tetrafluoroethylene sealing ring is 4.2-4.6 mm, and the expansion pressure of the high-energy fuel body in the liquid-phase loading warhead is not more than 0.4 MPa. In addition, the bolt is provided with lasting torque, and when the expanded polytetrafluoroethylene sealing ring is loosened, the bolt continuously compresses the expanded polytetrafluoroethylene sealing ring to carry out lasting extrusion on the expanded polytetrafluoroethylene sealing ring, so that a lasting tight attaching effect is generated, and a lasting sealing effect is ensured.
Claims (3)
1. A reverse stroke self-locking lasting torque output device comprises an expanded polytetrafluoroethylene sealing ring (3), and is characterized by further comprising a cover plate (1) with a hole and a screw (2) with torque;
the shape of the cover plate (1) with the hole is a first circular plate, the first circular plate is provided with a first double-step hole, the first double-step hole of the cover plate (1) with the hole is respectively composed of a first upper end hole, a first middle hole and a first lower end hole from top to bottom, the inner diameter of the first upper end hole of the cover plate (1) with the hole is larger than that of the first middle hole, the inner diameter of the first middle hole of the cover plate (1) with the hole is larger than that of the first lower end hole, the step surface between the first middle hole and the first lower end hole of the cover plate (1) with the hole is a first concentric circular plane, the inner side surface of the first lower end hole of the cover plate (1) with the hole is provided with a first internal thread, the first internal thread of the cover plate (1) with the hole is a four-thread, the inner side surface of the first upper end hole of the cover plate (1) with the hole is provided with a first oblique V-shaped groove which is uniformly distributed in the circumferential direction, the extension direction of the first oblique V-shaped groove of the cover plate (1) with the cover plate is parallel to the central axis of the first double-step hole, the first inclined V-shaped groove of the cover plate (1) with the hole consists of two surfaces, and the surface, positioned on the anticlockwise side in the overlooking direction of the cover plate (1) with the hole, in the two surfaces of the first inclined V-shaped groove of the cover plate (1) with the hole is coplanar with the central axis of the first double-step hole;
the cover plate (1) with the hole is a cover plate of a warhead, a first double-step hole of the cover plate (1) with the hole is a process hole, the lower end of the cover plate (1) with the hole is made of a liquid-phase material, the purpose is to plug and seal the process hole of the cover plate (1) with the hole, the nominal diameter of a first internal thread of the cover plate (1) with the hole is M6, the volume expansion pressure of the liquid-phase material at the lower end is not more than 0.4MPa, the thickness of the cover plate (1) with the hole is 11-13 mm, and the central axis of the first double-step hole of the cover plate (1) with the hole is perpendicular to the ground;
the screw with torque (2) is a revolving body, the screw with torque (2) is made of spring steel, the screw with torque (2) is composed of four parts from top to bottom, the screw with torque (2) is respectively a second upper end cylinder, a second middle connecting rod, a second middle cylinder and a second lower end cylinder from top to bottom, the diameter of the second upper end cylinder of the screw with torque (2) is larger than that of the second middle cylinder, the diameter of the second middle cylinder of the screw with torque (2) is larger than that of the second lower end cylinder, the middle part of the upper end surface of the second upper end cylinder of the screw with torque (2) is provided with a second hexagonal groove, the outer side cylindrical surface of the second upper end cylinder of the screw with torque (2) is provided with second rectangular bosses which are uniformly distributed in the circumferential direction, the number of the second middle connecting rods with torque (2) is ten, the axis of the second middle connecting rod with torque (2) is parallel to the axis of the revolving body with torque (2), the second middle connecting rod with the torque screw (2) is uniformly arranged around the axis of the revolving body with the torque screw (2) in the circumferential direction, a second external thread is arranged on the outer side cylindrical surface of a second lower end cylinder with the torque screw (2), and the second external thread with the torque screw (2) is a four-line thread;
the axis of a revolving body with a torque screw (2) is coincided with the central axis of a first double-step hole of a cover plate (1) with a hole, the screw (2) with the torque is positioned in the first double-step hole of the cover plate (1) with the hole, a second external thread of the screw (2) with the torque is in screw fit connection with a first internal thread of the cover plate (1) with the hole, the outer side surface of a second middle cylinder of the screw (2) with the torque is in clearance fit with the inner side surface of a first middle hole of the cover plate (1) with the hole, a second rectangular boss of the screw (2) with the torque is positioned in a first inclined V-shaped groove of the cover plate (1) with the hole, the screw (2) with the torque is used for plugging a process hole on the cover plate of a fighting part, and the second middle cylinder of the screw (2) with the torque is provided with a lasting clockwise torque;
the expanded polytetrafluoroethylene sealing ring (3) is in a third circular ring body, the third circular ring body is a revolving body made of expanded polytetrafluoroethylene, and the revolving section of the third circular ring body is rectangular;
the revolving body axis of the expanded polytetrafluoroethylene sealing ring (3) is coincided with the revolving body axis with the torque screw (2), the expanded polytetrafluoroethylene sealing ring (3) is positioned in a first double-step hole of the perforated cover plate (1), the outer side surface of the expanded polytetrafluoroethylene sealing ring (3) is contacted with the inner side surface of a first middle hole of the perforated cover plate (1), the upper end surface of the expanded polytetrafluoroethylene sealing ring (3) is contacted with the lower end surface edge of a second middle cylinder with the torque screw (2), the lower end surface of the expanded polytetrafluoroethylene sealing ring (3) is contacted with a first concentric circular plane of the perforated cover plate (1), the expanded polytetrafluoroethylene sealing ring (3) is a sealing ring for plugging a fabrication hole on the battle part cover plate, the expanded polytetrafluoroethylene sealing ring (3) does not react with liquid-phase fuel, the inner diameter of the expanded polytetrafluoroethylene sealing ring is 6.3-6.5 mm, and the outer diameter of the expanded polytetrafluoroethylene sealing ring is 9.4-9.6 mm, the thickness of the expanded polytetrafluoroethylene sealing ring is 4.2-4.6 mm;
the lead of the second external thread of the screw (2) with the torque is 13-15 mm;
the number of the first inclined V-shaped grooves of the cover plate with the holes (1) is the same as that of the second rectangular bosses with the torque screws (2), and the number of the first inclined V-shaped grooves of the cover plate with the holes (1) is 36-42;
the thickness of the second rectangular boss with the torque screw (2) along the circumferential direction of the torque screw (2) is 1.2-1.4 mm;
the diameter of the second middle connecting rod with the torque screw (2) is 0.8-1.0 mm;
the application method of the reverse stroke self-locking durable torque output device comprises the following steps:
step 1: assembling an expanded polytetrafluoroethylene sealing ring (3) with a cover plate (1) with a hole;
and 2, step: assembling the screw (2) with torque with the cover plate (1) with the hole;
and step 3: through an inner hexagonal wrench, a clockwise torque is applied to a second hexagonal groove of a torque-bearing screw (2), a second upper end cylinder of the torque-bearing screw (2) transmits the torque to a second middle connecting rod, the second middle connecting rod of the torque-bearing screw (2) transmits the torque to a second middle cylinder, the second middle cylinder of the torque-bearing screw (2) transmits the torque to a second lower end cylinder, a second external thread of the torque-bearing screw (2) is in spiral fit connection with a first internal thread of a cover plate (1) with a hole more tightly to generate an axial force, and the torque-bearing screw (2) compresses an expanded polytetrafluoroethylene sealing ring (3) to realize sealing;
and 4, step 4: the second rectangular boss with the torque screw (2) can rotate clockwise along the first inclined V-shaped groove of the perforated cover plate (1), and the clockwise rotation is not clamped, so the clockwise rotation of the torque screw (2) is smooth, the second rectangular boss with the torque screw (2) can not rotate anticlockwise along the first inclined V-shaped groove of the perforated cover plate (1), and the anticlockwise rotation is clamped, the anticlockwise rotation of the torque screw (2) is self-locking, after the clockwise rotation of the torque screw (2), the second middle cylinder with the torque screw (2) is twisted to generate clockwise torque, and the reverse rotation of the second rectangular boss with the torque screw (2) is clamped by the first inclined V-shaped groove of the perforated cover plate (1) to be self-locked, so the torque in the second middle cylinder with the torque screw (2) is durable, the expanded polytetrafluoroethylene sealing ring (3) with the torque screw (2) is compressed durably, and the sealing performance of the expanded polytetrafluoroethylene sealing ring (3) is durable.
2. The long-lasting torque output device of the reverse stroke self-locking as claimed in claim 1, characterized in that the lead of the second external thread of the torque screw (2) is 13 mm;
the number of the first inclined V-shaped grooves of the cover plate (1) with the holes is 36;
the thickness of the second rectangular boss with the torque screw (2) along the circumferential direction of the torque screw (2) is 1.2 mm;
the diameter of the second middle connecting rod with the torque screw (2) is 0.8 mm.
3. A reverse self-locking permanent torque take-off device according to claim 1, characterized in that the lead of the second external thread of the torqued screw (2) is 15 mm;
the number of the first inclined V-shaped grooves of the cover plate (1) with the holes is 42;
the thickness of the second rectangular boss with the torque screw (2) along the circumferential direction of the torque screw (2) is 1.4 mm;
the diameter of the second middle connecting rod with the torque screw (2) is 1.0 mm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201065879Y (en) * | 2007-06-25 | 2008-05-28 | 严南根 | Self-locking type novel stop screw |
| CN201502608U (en) * | 2009-08-13 | 2010-06-09 | 汕头经济特区超艺螺丝工业有限公司 | Self-locking anti-loosing adjustment screw |
| CN202579598U (en) * | 2012-05-09 | 2012-12-05 | 宁波市鄞州德成塑机厂 | Anti-looseness machine washer |
| CN103697037A (en) * | 2012-09-27 | 2014-04-02 | 天津富隆金属制品厂 | Novel anti-loose screw nail |
| DE102014109959A1 (en) * | 2014-07-16 | 2016-01-21 | Fischerwerke Gmbh & Co. Kg | Screw and insulation dowels |
| CN109141117A (en) * | 2018-08-30 | 2019-01-04 | 山西北方机械制造有限责任公司 | A kind of barrel emitting fire extinguisher bomb |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11493075B2 (en) * | 2019-05-21 | 2022-11-08 | Penn Engineering & Manufacturing Corp. | Torque limiting screw |
-
2021
- 2021-01-13 CN CN202110042700.7A patent/CN112880486B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201065879Y (en) * | 2007-06-25 | 2008-05-28 | 严南根 | Self-locking type novel stop screw |
| CN201502608U (en) * | 2009-08-13 | 2010-06-09 | 汕头经济特区超艺螺丝工业有限公司 | Self-locking anti-loosing adjustment screw |
| CN202579598U (en) * | 2012-05-09 | 2012-12-05 | 宁波市鄞州德成塑机厂 | Anti-looseness machine washer |
| CN103697037A (en) * | 2012-09-27 | 2014-04-02 | 天津富隆金属制品厂 | Novel anti-loose screw nail |
| DE102014109959A1 (en) * | 2014-07-16 | 2016-01-21 | Fischerwerke Gmbh & Co. Kg | Screw and insulation dowels |
| CN109141117A (en) * | 2018-08-30 | 2019-01-04 | 山西北方机械制造有限责任公司 | A kind of barrel emitting fire extinguisher bomb |
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