CN108799307B - Conveniently-disassembled expansion bolt - Google Patents
Conveniently-disassembled expansion bolt Download PDFInfo
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- CN108799307B CN108799307B CN201810721413.7A CN201810721413A CN108799307B CN 108799307 B CN108799307 B CN 108799307B CN 201810721413 A CN201810721413 A CN 201810721413A CN 108799307 B CN108799307 B CN 108799307B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Connection Of Plates (AREA)
Abstract
The invention belongs to the technical field of connecting pieces, and particularly relates to a conveniently-disassembled expansion bolt which comprises a first screw cap, a first screw rod and a first nut, wherein the first screw rod and the first screw cap are coaxially and fixedly arranged on the bottom surface of the first screw cap, and the first nut is sleeved on the outer layer of the first screw rod; a first through hole penetrating to the bottom surface of the first screw cap is formed in the bottom surface, far away from the first screw cap, of the first screw rod; the upper surface of the first nut is provided with a second through hole which penetrates through the first through hole; the upper surface of the first nut is fixedly provided with a locking piece; the other end of the steel wire rope penetrates through the mounting plate, the first through hole, the second through hole and the locking piece to be connected, and the steel wire rope is used for tensioning the friction block to enable the elastic piece to be compressed and deformed; the first nut is extruded by arranging the friction block and the elastic piece, so that the bolt is locked; the bolt is convenient to disassemble by arranging the first screw to drive the steel wire rope to move in the vertical direction, so that the use efficiency of the bolt is improved.
Description
Technical Field
The invention belongs to the technical field of connecting pieces, and particularly relates to a conveniently-disassembled expansion bolt.
Background
The bolt is easy to loose and fall off after being used for a long time, the technical problem that the bolt falls off is solved by the technical scheme of expansion bolts, locking bolts and the like in the prior art, the problem that the locking bolts and the expansion bolts are difficult to detach from a workpiece exists at present, so that the workpiece is difficult to detach, if a drill bit is adopted to forcedly detach the bolt, a large amount of working hours are consumed, and the working efficiency is reduced; while the drill bit forcibly removes the bolt, the drill bit damages the surface of the workpiece, thereby affecting the reuse of the workpiece.
Expansion bolts's technical scheme has also appeared among the prior art, has disclosed quick installation hammer nail flat explosion expansion bolts like chinese patent with application number 201720411623.7, including the sleeve and with the ejector pin that the sleeve matches, four edges are seted up to telescopic head segment the crack of telescopic circumference evenly distributed, four cracks will telescopic head segment is separated into four transversal fan-shaped deformation posts of personally submitting, each the internal face of the head segment of deformation post is the arcwall face of adduction, each the internal face has three edges the circumference of cambered surface sets up and follows the empty annular of keeping away of telescopic axial arrangement, telescopic head segment outer wall is equipped with a plurality of edges telescopic axial arrangement's anti-skidding annular, ejector pin's head is, ejector pin's cone afterbody has the locking outer fringe that can support the telescopic tail end, works as when ejector pin's head is worn out when telescopic head end, the head of the ejector rod makes the deformation columns bend outwards by contacting with the inner wall surface.
According to the technical scheme, the locking of the bolt can be realized, but the technical scheme performs plastic extrusion on the bolt, so that the bolt is inconvenient to use for the second time; and the solution is not easy to disassemble, so that the use of the bolt is limited.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides the conveniently-disassembled expansion bolt, wherein a first nut is extruded by arranging a friction block and an elastic piece, so that the bolt is locked; the bolt is convenient to disassemble by arranging a first screw to drive the steel wire rope to move in the vertical direction; when the elastic part is a gas spring, the bolt has a locking function by arranging the limiting unit in the gas spring; the locking efficiency of the bolt of the invention is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention discloses a conveniently-disassembled expansion bolt which comprises a first screw cap, a first screw rod and a first nut, wherein the first screw rod and the first screw cap are coaxially and fixedly arranged on the bottom surface of the first screw cap, and the first nut is sleeved on the outer layer of the first screw rod; a first through hole penetrating to the bottom surface of the first screw cap is formed in the bottom surface, far away from the first screw cap, of the first screw rod; the upper surface of the first nut is provided with a second through hole penetrating to the first through hole; a locking piece is fixedly arranged on the upper surface of the first nut; the outer wall of the first screw is radially provided with four limiting grooves penetrating through the first through hole, and the four limiting grooves are uniformly distributed in a circumferential arrangement mode; the four limiting grooves are all provided with friction blocks, and the first through hole is provided with a mounting plate which is positioned on the same horizontal plane with the friction blocks; the mounting plate is fixedly connected with the inner wall of the first through hole through a support, and an elastic piece is fixedly connected between the mounting plate and the friction block; the elastic piece is used for pushing the friction block to one side far away from the mounting plate; the inner side surface of the friction block is connected with one end of the steel wire rope; the other end of the steel wire rope penetrates through the mounting plate, the first through hole, the second through hole and the locking piece to be connected, and the steel wire rope is used for tensioning the friction block to enable the elastic piece to be compressed and deformed.
When the first screw rod and the first nut are matched to clamp a workpiece, the locking piece drives the steel wire rope to move in the vertical direction to control the friction force of the friction block on the inner wall of the first nut; when the locking piece drives the steel wire rope to move downwards, the bolt is in a locking state, and when the locking piece drives the steel wire rope to move upwards, the bolt can be detached;
when the steel wire rope connected with the locking part is cut short, the tensile force of the steel wire rope on the friction block disappears, at the moment, the elastic part returns to the original state to extrude the friction block, and the friction block extrudes and rubs the inner wall of the first nut, so that the bolt is prevented from being disassembled by human factors.
Preferably, the locking piece is a screw, a second threaded hole is formed in the axis position of the upper surface of the first nut, and the second threaded hole is used for being matched with the screw; the screw is matched with the second threaded hole to enable the steel wire rope to tighten the friction block; when the locking piece is a screw, the screw can vertically move in the second threaded hole, so that the steel wire rope is driven to vertically move; when the screw is screwed downwards, the steel wire rope is in a loose state, and the elastic piece extrudes the friction block to fasten the inner wall of the first nut; at the moment, the bolt has a loosening function; meanwhile, the bolts are not convenient to disassemble; when the screw is screwed upwards, the steel wire rope tensions the friction block, so that the friction block is not in contact with the inner wall of the first nut, the bolt can be disassembled, and the bolt can be reused.
Preferably, the lower surface of a second nut of the screw is provided with a circular groove, and a circular rotating block is arranged in the circular groove; the rotating block is fixedly connected with the top end of the steel wire rope; when the second nut of the screw rotates, the steel wire rope enables the rotating block to rotate in the circular groove by being matched with the rotating block, and the steel wire rope is used for avoiding the steel wire rope from being twisted, so that the service life of the steel wire rope is prolonged.
Preferably, the mounting plate is disc-shaped, a rectangular groove is formed in the side surface of the mounting plate, a pulley is rotatably mounted in the rectangular groove, and a third hole penetrating through the rectangular groove is formed in the upper surface of the mounting plate; the pulley is matched with the third hole to draw the steel wire rope.
Preferably, the elastic member is one of a coil spring, a rubber spring and a gas spring; when the elastic part is a spiral spring, the spiral spring has the advantages of simple structure and low counterfeiting cost, and is suitable for occasions with large use amount, such as construction sites and use occasions for assembling automobile parts;
when the elastic piece is a rubber spring, the rubber spring is a composite rubber spring; the composite rubber spring is formed by wrapping rubber on the outer surface of the metal spiral spring, has the advantages of high elasticity and corrosion resistance, and is suitable for assembling parts of occasions such as ships, submarines and underwater operation devices;
when the elastic piece is a gas spring, the gas spring has the characteristics of variable rigidity and shock absorption, the friction block can be in full contact with the inner wall of the first nut, and meanwhile, the gas spring can reduce the vibration of the first nut through matching with the friction block, so that the first nut and the first screw rod are fastened; meanwhile, the friction block extrudes and rubs the inner wall of the first nut to prevent the first nut from being separated from the first screw rod.
Preferably, the length of the gas spring cannot be reduced after the gas spring is stretched, and the gas spring is used for preventing the friction block from moving towards one side of the mounting plate;
the gas spring comprises a push rod, a piston plate and a cylinder body, and the push rod is slidably mounted in the cylinder body through the piston plate; the inner wall of the cylinder body is provided with a limiting unit for enabling the piston plate to move in a single direction; the limiting unit comprises a stop block and a third spring; a plurality of groups of mounting grooves are formed in the inner wall of the cylinder body, and the stop block is fixedly mounted in the mounting grooves through a third spring; the side of the stop block opposite to the piston plate is an arc-shaped surface, and the side of the stop block opposite to the piston plate is a plane and is used for controlling the unidirectional movement of the piston plate; when the steel wire rope is in the mode state, compressed gas in the gas spring expands to push the piston plate to move, and the back surface of the stop block is a plane and used for preventing the push rod from retracting into the cylinder body; the bolt provided with the gas spring is mainly used for bridges, railways and highways, mainly plays a role in locking the bolt and is used for improving the construction safety.
Preferably, the number of the multiple groups of mounting grooves is at least two, the number of the mounting grooves is consistent with that of the stop blocks, and the multiple groups of mounting grooves are uniformly distributed along the axial position of the cylinder body; each group of mounting grooves in the multiple groups of mounting grooves comprises three mounting grooves; the three mounting grooves are uniformly distributed along the radial direction of the cylinder body in a circumferential arrangement mode;
horizontal lines of two adjacent mounting grooves among the two adjacent mounting grooves in the plurality of groups of mounting grooves are staggered with the axial direction of the cylinder body and are used for preventing the plurality of piston plates from repeatedly rubbing the same part of the stop block; when the inside compressed air extrusion piston plate motion of cylinder body, take place the friction between piston plate and the dog, if the dog takes place repeated friction with the same position of piston plate and can cause the border of piston plate to wear and tear to influence the leakproofness of piston plate, and then influenced gas spring's elasticity, be used for avoiding gas spring to produce the phenomenon of gas leakage at the during operation.
Preferably, a buckle is fixedly arranged between the part of the push rod, which is positioned on the outer side of the cylinder body, and the outer surface of the cylinder body, and is used for extruding the piston plate through the push rod; the buckle is used for preventing the phenomenon of lengthening of a gas spring caused by expansion of compressed gas in the cylinder body; after the gas spring is fixedly installed between the friction block and the installation plate, the buckle is unlocked.
The invention has the following beneficial effects:
1. the locking piece is matched with the steel wire rope to pull the friction block, and when the steel wire rope is loosened, the elastic piece pushes the friction block and the inner wall of the first nut to extrude, so that the locking of the bolt is realized; when the locking piece drives the steel wire rope to move upwards, the friction block is tensioned, and meanwhile, the friction block is separated from the inner wall of the first nut, so that the bolt is detachable.
2. When the elastic piece is a gas spring, a limit unit is arranged in the gas spring and used for limiting the contraction of the gas spring, so that the friction block cannot be separated after extruding the inner wall of the first nut, and the bolt cannot be detached after being locked.
3. The pulley is arranged on the mounting plate to guide the steel wire rope in a traction manner, so that the pulling efficiency of the steel wire rope on the friction block is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a partial enlarged view of B in FIG. 2;
FIG. 5 is a cross-sectional view C-C of FIG. 2;
FIG. 6 is an enlarged view of a portion D of FIG. 5;
FIG. 7 is a schematic view of the gas spring;
fig. 8 is a partial enlarged view of E in fig. 7;
in the figure: first nut 1, first screw rod 11, first nut 12, first through-hole 13, No. two through-holes 14, retaining member 15, spacing groove 16, friction block 17, mounting panel 18, elastic component 19, wire rope 2, screw 21, No. two screw holes 22, No. two nuts 23, circular groove 24, turning block 25, rectangular groove 26, pulley 27, No. three hole 28, gas spring 29, push rod 3, piston plate 31, cylinder body 32, spacing unit 33, dog 34, No. three spring 35, mounting groove 36, buckle 37.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 8, the easy-to-detach expansion bolt of the present invention includes a first nut 1, a first screw 11 and a first nut 12, wherein the first screw 11 and the first nut 1 are coaxially and fixedly mounted on a bottom surface of the first nut 1, and the first nut 12 is sleeved on an outer layer of the first screw 11; a first through hole 13 penetrating to the bottom surface of the first screw cap 1 is formed in the bottom surface, far away from the first screw cap 1, of the first screw rod 11; a second through hole 14 penetrating to the first through hole 13 is formed in the upper surface of the first nut 1; the locking piece 15 is fixedly arranged on the upper surface of the first nut 1; the outer wall of the first screw 11 is radially provided with four limiting grooves 16 penetrating through the first through hole 13, and the four limiting grooves 16 are uniformly distributed in a circumferential arrangement mode; the four limiting grooves 16 are respectively provided with a friction block 17, and the first through hole 13 is internally provided with an installation plate 18 which is positioned on the same horizontal plane with the friction blocks 17; the mounting plate 18 is fixedly connected with the inner wall of the first through hole 13 through a support, and an elastic piece 19 is fixedly connected between the mounting plate 18 and the friction block 17; the elastic piece 19 is used for pushing the friction block 17 to the side far away from the mounting plate 18; the inner side surface of the friction block 17 is connected with one end of the steel wire rope 2; the other end of the steel cable 2 passes through the mounting plate 18, the first through hole 13, the second through hole 14 and the locking member 15, and is connected to the friction block 17 to compress and deform the elastic member 19.
When the device works, after the first screw rod 11 and the first nut 12 are matched to clamp a workpiece, the locking piece 15 drives the steel wire rope 2 to move in the vertical direction to control the friction force of the friction block 17 on the inner wall of the first nut 12; when the locking piece 15 drives the steel wire rope 2 to move downwards, the bolt is in a locking state, and when the locking piece 15 drives the steel wire rope 2 to move upwards, the bolt can be detached;
when the steel wire rope 2 connected with the locking part 15 is shortened, the tensile force of the steel wire rope 2 on the friction block 17 disappears, at the moment, the elastic part 19 is restored to the original state to extrude the friction block 17, and the friction block 17 extrudes and rubs the inner wall of the first nut 12, so that the bolt is prevented from being disassembled by human factors.
As an embodiment of the present invention, the locking member 15 is a screw 21, and a second threaded hole 22 is formed in an axial position of an upper surface of the first nut 1, and the second threaded hole 22 is used for cooperating with the screw 21; the screw 21 is matched with the second threaded hole 22 to enable the steel wire rope 2 to tighten the friction block 17; when the locking piece 15 is a screw 21, the screw 21 can vertically move in the second threaded hole 22, so that the steel wire rope 2 is driven to move in the vertical direction; when the screw 21 is screwed downwards, the steel wire rope 2 is in a loose state, and the elastic piece 19 presses the friction block 17 to fasten the inner wall of the first nut 12; at the moment, the bolt has a loosening function; meanwhile, the bolts are not convenient to disassemble; when the screw 21 is screwed upwards, the steel wire rope 2 tightens the friction block 17, so that the friction block 17 is not in contact with the inner wall of the first nut 12, the bolt can be disassembled, and the bolt can be recycled.
As an embodiment of the present invention, an annular groove 24 is formed on a lower surface of a second nut 23 of the screw 21, and an annular rotating block 25 is arranged in the annular groove 24; the rotating block 25 is fixedly connected with the top end of the steel wire rope 2; when the second nut 23 of the screw 21 rotates, the wire rope 2 rotates the rotating block 25 in the circular groove 24 by cooperating with the rotating block 25, which is used to prevent the wire rope 2 from being twisted, thereby improving the life of the wire rope 2.
In one embodiment of the present invention, the mounting plate 18 is a disk-shaped, a rectangular groove 26 is formed on a side surface of the mounting plate 18, a pulley 27 is rotatably mounted in the rectangular groove 26, and a third hole 28 penetrating through the rectangular groove 26 is formed on an upper surface of the mounting plate 18; the sheave 27 draws the wire rope 2 by engaging with the third hole 28.
As an embodiment of the present invention, the elastic member 19 is one of a coil spring, a rubber spring, and a gas spring 29; when the elastic part 19 is a spiral spring, the spiral spring has the advantages of simple structure and low counterfeiting cost, and is suitable for occasions with large use amount, such as construction sites and automobile part assembly use occasions;
when the elastic piece 19 is a rubber spring, the rubber spring is a composite rubber spring; the composite rubber spring is formed by wrapping rubber on the outer surface of the metal spiral spring, has the advantages of high elasticity and corrosion resistance, and is suitable for assembling parts of occasions such as ships, submarines and underwater operation devices;
when the elastic piece 19 is the gas spring 29, the gas spring 29 has the characteristics of variable rigidity and shock absorption, so that the friction block 17 can be in full contact with the inner wall of the first nut 12, and meanwhile, the gas spring 29 can reduce the vibration of the first nut 12 by matching with the friction block 17, so that the first nut 12 and the first screw rod 11 are fastened; meanwhile, the friction block 17 performs extrusion friction on the inner wall of the first nut 12 to prevent the first nut 12 from being separated from the first screw 11.
As an embodiment of the present invention, the length of the gas spring 29 cannot be reduced after being stretched, which is used to prevent the friction block 17 from moving toward one side of the mounting plate 18;
the gas spring 29 comprises a push rod 3, a piston plate 31 and a cylinder 32, wherein the push rod 3 is slidably mounted in the cylinder 32 through the piston plate 31; the inner wall of the cylinder body 32 is provided with a limiting unit 33 for enabling the piston plate 31 to move in a single direction; the limiting unit 33 comprises a stop block 34 and a third spring 35; a plurality of groups of mounting grooves 36 are formed in the inner wall of the cylinder body 32, and the stop block 34 is fixedly mounted in the mounting grooves 36 through a third spring 35; one surface of the stop block 34, which is opposite to the piston plate 31, is an arc surface, and one surface of the stop block 34, which is opposite to the piston plate 31, is a plane, and is used for controlling the unidirectional motion of the piston plate 31; when the wire rope 2 is in the mode state, the compressed gas in the gas spring 29 expands to push the piston plate 31 to move, and the back surface of the stop block 34 is a plane for preventing the push rod 3 from retracting into the cylinder 32; the bolt provided with the gas spring 29 is mainly used for bridges, railways and highways, mainly has the function of locking the bolt and is used for improving the construction safety.
As an embodiment of the present invention, the number of the plurality of sets of mounting grooves 36 is at least two, and the number of the mounting grooves 36 and the number of the stoppers 34 are kept consistent, and the plurality of sets of mounting grooves 36 are uniformly distributed along the axial position of the cylinder body 32; each set of mounting slots 36 of the plurality of sets of mounting slots 36 includes three mounting slots 36; the three mounting grooves 36 are uniformly distributed along the radial direction of the cylinder body 32 in a circumferential arrangement manner;
horizontal lines between two adjacent mounting grooves 36 in the plurality of groups of mounting grooves 36 and adjacent two mounting grooves 36 are staggered with the axial direction of the cylinder body 32, and the horizontal lines are used for preventing the plurality of piston plates 31 from repeatedly rubbing the same part of the stop block 34; when compressed air in the cylinder 32 presses the piston plate 31 to move, friction occurs between the piston plate 31 and the stopper 34, if repeated friction occurs at the same position of the stopper 34 and the piston plate 31, the edge of the piston plate 31 is abraded, so that the sealing performance of the piston plate 31 is affected, the elasticity of the gas spring 29 is affected, and the phenomenon that the gas spring 29 leaks gas during operation is avoided.
In one embodiment of the present invention, a snap 37 is fixedly disposed between a portion of the push rod 3 located outside the cylinder 32 and an outer surface of the cylinder 32, and is used for pressing the piston plate 31 by the push rod 3; the snap 37 is used for preventing the elongation phenomenon of the gas spring 29 caused by the expansion of the compressed gas in the cylinder 32; after the gas spring 29 is fixedly mounted between the friction block 17 and the mounting plate 18, the catch 37 is disengaged.
When the steel wire rope 2 is in a loosening state, the elastic piece 19 extrudes the friction block 17 to fasten the inner wall of the first nut 12 when the screw 21 is screwed downwards after the first screw rod 11 and the first nut 12 are matched to clamp a workpiece when the elastic piece 19 is one of a spiral spring and a rubber spring; when the bolt needs to be disassembled, the bolt 21 is screwed upwards, the steel wire rope 2 tensions the friction block 17, so that the friction block 17 is not contacted with the inner wall of the first nut 12, and then the bolt is disassembled;
the front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A conveniently-disassembled expansion bolt comprises a first screw cap (1), a first screw rod (11) and a first nut (12), wherein the first screw rod (11) and the first screw cap (1) are coaxially and fixedly installed on the bottom surface of the first screw cap (1), and the first nut (12) is sleeved on the outer layer of the first screw rod (11); the method is characterized in that: a first through hole (13) penetrating to the bottom surface of the first screw cap (1) is formed in the bottom surface, far away from the first screw cap (1), of the first screw rod (11); the upper surface of the first nut (1) is provided with a second through hole (14) penetrating to the first through hole (13); a locking piece (15) is fixedly arranged on the upper surface of the first nut (1); the outer wall of the first screw rod (11) is radially provided with four limiting grooves (16) penetrating through the first through hole (13), and the four limiting grooves (16) are uniformly distributed in a circumferential arrangement mode; friction blocks (17) are arranged in the four limiting grooves (16), and mounting plates (18) which are positioned on the same horizontal plane with the friction blocks (17) are arranged in the first through holes (13); the mounting plate (18) is fixedly connected with the inner wall of the first through hole (13) through a support, and an elastic piece (19) is fixedly connected between the mounting plate (18) and the friction block (17); the elastic piece (19) is used for pushing the friction block (17) to one side far away from the mounting plate (18); the inner side surface of the friction block (17) is connected with one end of the steel wire rope (2); the other end of the steel wire rope (2) penetrates through the mounting plate (18), the first through hole (13), the second through hole (14) and the locking piece (15) to be connected, and the steel wire rope is used for tensioning the friction block (17) to enable the elastic piece (19) to be compressed and deformed;
the locking piece (15) is a screw (21), a second threaded hole (22) is formed in the axis position of the upper surface of the first nut (1), and the second threaded hole (22) is used for being matched with the screw (21) for use; the screw (21) is matched with the second threaded hole (22) to enable the steel wire rope (2) to tighten the friction block (17).
2. A removable expansion bolt according to claim 1, wherein: an annular groove (24) is formed in the lower surface of a second nut (23) in the screw (21), and an annular rotating block (25) is arranged in the annular groove (24); the rotating block (25) is fixedly connected with the top end of the steel wire rope (2).
3. A removable expansion bolt according to claim 1, wherein: the mounting plate (18) is of a disc shape, a rectangular groove (26) is formed in the side surface of the mounting plate (18), a pulley (27) is rotatably mounted in the rectangular groove (26), and a third hole (28) penetrating through the rectangular groove (26) is formed in the upper surface of the mounting plate (18); the pulley (27) is matched with the third hole (28) to draw the steel wire rope (2).
4. A removable expansion bolt according to claim 1, wherein: the elastic member (19) is one of a coil spring, a rubber spring and a gas spring (29).
5. A removable expansion bolt according to claim 4, wherein: the length of the gas spring (29) cannot be reduced after stretching, and the gas spring is used for preventing the friction block (17) from moving towards one side of the mounting plate (18);
the gas spring (29) comprises a push rod (3), a piston plate (31) and a cylinder body (32), and the push rod (3) is installed in the cylinder body (32) in a sliding mode through the piston plate (31); the inner wall of the cylinder body (32) is provided with a limiting unit (33) for enabling the piston plate (31) to move in a single direction; the limiting unit (33) comprises a stop block (34) and a third spring (35); a plurality of groups of mounting grooves (36) are formed in the inner wall of the cylinder body (32), and the stop block (34) is fixedly mounted in the mounting grooves (36) through a third spring (35); one side of the stop block (34) opposite to the piston plate (31) is an arc-shaped surface, and the side of the stop block (34) opposite to the piston plate (31) is a plane, and is used for controlling the unidirectional movement of the piston plate (31).
6. A removable expansion bolt according to claim 5, wherein: the number of the multiple groups of mounting grooves (36) is at least two, the number of the mounting grooves (36) is consistent with that of the stop blocks (34), and the multiple groups of mounting grooves (36) are uniformly distributed along the axial position of the cylinder body (32); each set of mounting slots (36) of the plurality of sets of mounting slots (36) comprises three mounting slots (36); the three mounting grooves (36) are uniformly distributed along the radial direction of the cylinder body (32) in a circumferential arrangement mode.
7. A removable expansion bolt according to claim 6, wherein: horizontal lines between two adjacent groups of mounting grooves (36) in the plurality of groups of mounting grooves (36) and adjacent two mounting grooves (36) are staggered with the axial direction of the cylinder body (32), and the horizontal lines are used for avoiding repeated friction of the same part of the stop blocks (34) by the plurality of piston plates (31).
8. A removable expansion bolt according to claim 5, wherein: a buckle (37) is fixedly arranged between the part of the push rod (3) positioned on the outer side of the cylinder body (32) and the outer surface of the cylinder body (32) and is used for extruding the piston plate (31) through the push rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721413.7A CN108799307B (en) | 2018-07-04 | 2018-07-04 | Conveniently-disassembled expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721413.7A CN108799307B (en) | 2018-07-04 | 2018-07-04 | Conveniently-disassembled expansion bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799307A CN108799307A (en) | 2018-11-13 |
| CN108799307B true CN108799307B (en) | 2020-07-21 |
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|---|---|---|---|
| CN201810721413.7A Expired - Fee Related CN108799307B (en) | 2018-07-04 | 2018-07-04 | Conveniently-disassembled expansion bolt |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488675A (en) * | 2018-12-10 | 2019-03-19 | 重庆大学 | A kind of hinged bolt |
| CN110332205B (en) * | 2019-07-20 | 2020-12-01 | 浦江县恒川信息科技有限公司 | Stable form check bolt |
| CN110645253B (en) * | 2019-09-29 | 2021-04-13 | 宁波金鼎紧固件有限公司 | Nut and bolt assembly capable of self-locking |
| CN110939643A (en) * | 2019-12-11 | 2020-03-31 | 储田生 | Anti-drop type fixing bolt |
| CN113483007B (en) * | 2021-08-11 | 2024-07-09 | 常州宜轩五金有限公司 | Automatic locking screw |
| CN113894581B (en) * | 2021-11-09 | 2023-10-20 | 贵州欣宇泰科精密科技有限公司 | Antidetonation core frock that rises with locking function |
| CN114810753B (en) * | 2022-03-30 | 2023-10-10 | 宁波天安（集团）股份有限公司 | Bolt fastening seal structure convenient to installation and prefabricated cabin with structure |
| CN116608197B (en) * | 2023-06-16 | 2024-03-22 | 宁波东南高强度紧固件有限公司 | Mechanical engagement high-strength bolt assembly |
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|---|---|---|---|---|
| US4016914A (en) * | 1975-06-26 | 1977-04-12 | Zurko Mieczyslaw J | Self-locking panel fastener |
| WO1999019637A1 (en) * | 1997-10-14 | 1999-04-22 | Ming Yan | A bolt with an energy-reserving and self-locking device |
| CN2434471Y (en) * | 2000-04-05 | 2001-06-13 | 刘永熙 | Integrated anti-loose antitheft nut |
| CN2667230Y (en) * | 2003-01-15 | 2004-12-29 | 王德勇 | Fastening bolt against unauthorised operation |
| CN201771934U (en) * | 2010-08-25 | 2011-03-23 | 沈阳兴华航空电器有限责任公司 | Threaded connection anti-loosening mechanism |
| CN203081979U (en) * | 2013-01-05 | 2013-07-24 | 陈文辉 | Novel bolt |
| CN204099381U (en) * | 2014-10-08 | 2015-01-14 | 浙江明泰标准件有限公司 | A kind of adjustable chek bolt |
-
2018
- 2018-07-04 CN CN201810721413.7A patent/CN108799307B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799307A (en) | 2018-11-13 |
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