CN113374831A - Quick connector for coiled steel strand and using method thereof - Google Patents
Quick connector for coiled steel strand and using method thereof Download PDFInfo
- Publication number
- CN113374831A CN113374831A CN202110774265.7A CN202110774265A CN113374831A CN 113374831 A CN113374831 A CN 113374831A CN 202110774265 A CN202110774265 A CN 202110774265A CN 113374831 A CN113374831 A CN 113374831A
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- Prior art keywords
- locking
- steel strand
- quick connector
- clamping pieces
- taper sleeve
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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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
- F16G11/05—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps by using conical plugs insertable between the strands
Abstract
The invention discloses a quick connector of a coiled steel strand and a using method thereof, wherein the quick connector comprises a connecting body, a locking taper sleeve, a locking clamping piece and a spring; the connecting body is of a cylindrical structure; the locking taper sleeve is arranged at the inner holes at the two ends of the connecting body, the locking taper sleeve comprises an inner taper hole with a large opening facing the inside of the connecting body, and a flared opening is arranged at the inner hole at the small end of the locking taper sleeve; the locking clamping pieces are in a semi-conical cylinder and are internally provided with a sawtooth-shaped locking structure, and the locking clamping pieces are arranged in inner conical holes of the locking taper sleeve in a pairwise opposite mode with small ends facing outwards; the spring is arranged in the inner hole of the connecting body and is positioned between the two pairs of locking clamping pieces; the outer conical surfaces of the two pairs of locking clamping pieces are attached to the inner surface of the inner conical hole of the locking taper sleeve by the tension of the spring. The quick connector for the coiled steel strands can quickly and safely connect a plurality of coiled steel strands together on the site where the coiled steel strands are coiled into a coil.
Description
Technical Field
The invention relates to the field of recoverable anchor cable products, in particular to a quick connector for a coiled steel strand and a using method thereof.
Background
The recyclable anchor cable is widely applied and popularized in the market after being researched and developed by the company. When a large number of disc steel stranded wires which can be recycled on the engineering site are collected, stored and transported, secondarily recycled, derusted and the like, a lot of troubles and workload are brought; meanwhile, potential safety hazards exist in the coiling and uncoiling process of the coiled steel strand. To solve this problem companies have taken many solutions, for example: a multilayer cantilever shelf and the like are adopted, but a plurality of inconvenient factors such as large occupied area, low feeding and taking speed and the like exist in the use process, the best method for reducing labor force and potential safety hazards is to coil steel stranded wires of a same length and a specification into coils, and a plurality of steel stranded wires are required to be connected to realize the integral coiling. The connection of many dish steel strand wires needs a large amount of convenient effectual dish steel strand wires, and the connector must possess characteristics such as small, light in weight, low in processing cost, installation dismantlement convenient to use is swift, satisfy tensile requirement and be greater than or equal to 50KN, and a light, safe, swift dish steel strand wires connector just needs urgent research and development to come out from this background.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a quick connector for coiled steel strands, which can quickly and safely connect a plurality of coiled steel strands together on the site of coiling the coiled steel strands.
In order to achieve the aim, the invention provides a quick connector for a coiled steel strand, which comprises a connecting body, a locking taper sleeve, a locking clamping piece and a spring; the connecting body is of a cylindrical structure; the locking taper sleeve is arranged at the inner holes at the two ends of the connecting body, the locking taper sleeve comprises an inner taper hole with a large opening facing the inside of the connecting body, and a flared opening is arranged at the inner hole at the small end of the locking taper sleeve; the locking clamping pieces are in a semi-conical cylinder structure, and are arranged in the inner conical holes of the locking taper sleeves in a pairwise opposite mode, and the small ends of the locking clamping pieces face outwards; the spring is arranged in the inner hole of the connecting body and is positioned between the two pairs of locking clamping pieces; the outer conical surfaces of the two pairs of locking clamping pieces are attached to the inner surface of the inner conical hole of the locking taper sleeve by the tension of the spring.
In a preferred embodiment, the quick connector for coiled steel strands further comprises a stop collar disposed at the middle of the inner bore of the connecting body.
In a preferred embodiment, the distance between the two ends of the limiting sleeve and the locking taper sleeve is less than the length of the outer conical surface of the locking clamping piece.
In a preferred embodiment, the stop collar has an inner bore diameter greater than the outer diameter of the spring but less than the outer diameter of the large end of the locking clip.
In a preferred embodiment, the inner diameter of the spring is larger than the outer diameter of the steel wire coil, which corresponds to the inner diameter of the locking clip.
In a preferred embodiment, the taper of the outer conical surface of the locking clip matches the taper of the inner conical bore of the locking taper sleeve.
In a preferred embodiment, the locking structure is a plurality of internal teeth in the shape of saw teeth disposed on the surface of the internal bore of the locking jaw.
In a preferred embodiment, the internal teeth are uniformly spaced, and the central axes of the internal teeth are coaxial and coincide with the central axis of the inner hole of the locking clip.
In a preferred embodiment, the connecting body comprises a plurality of connecting holes which are annularly arranged at two ends and the middle of the connecting body, and the plurality of connecting holes are used for fixing the locking taper sleeve and the limiting sleeve in the connecting body in a welding mode or a screw connection mode.
In order to achieve the above object, the present invention provides a method for using a coiled steel strand quick connector, which is applied to the quick connector, the method comprising: an operator inserts one end of a first disc steel strand into the small-end enlargements of a pair of locking clamping pieces at one end of the quick connector by hand, overcomes the tension of a spring by using external force to enable the outer conical surfaces of the pair of locking clamping pieces to slide inwards along the inner conical holes of the locking taper sleeve, the pair of locking clamping pieces are far away from each other along with the inward sliding of the pair of locking clamping pieces, the inner holes of the pair of locking clamping pieces become larger gradually, one end of the first disc steel strand can rapidly penetrate through the inner holes of the pair of locking clamping pieces under the action of the external force and is inserted into the spring, at the moment, the first disc steel strand is loosened by an author to enable the external force to disappear, the pair of locking clamping pieces rapidly reset under the action of the tension of the spring, and a plurality of inner teeth in the inner holes of the pair of locking clamping pieces can rapidly clamp the first disc steel strand; the operator can quickly insert one end of a second steel strand into the other end of the quick connector by repeating the steps again; repeating the two steps for multiple times, and connecting the first disc steel strands and the second disc steel strands together in sequence in a head-to-tail grounding manner through the quick connectors; when the quick connector is disassembled and unlocked, an operator holds one end of a first coiled steel strand or a second coiled steel strand by one hand, and lightly taps the small ends of the pair of locking clamping pieces along the axial direction of the coiled steel strand by the other hand by using a tool, so that the quick connector can be unlocked, and one end of the first coiled steel strand or one end of the second coiled steel strand can be quickly pulled out.
Compared with the prior art, the quick connector for the disc steel strand and the use method thereof have the following beneficial effects: the quick connector comprises a locking clamping piece with sawtooth-shaped threads inside, wherein the outer conical surface of the locking clamping piece is subjected to quenching treatment, and the clamping piece threads are meshed with the coiled steel stranded wire through reaction force during working; the inner conical taper hole of the locking taper sleeve of the quick connector is matched with the outer conical surface of the locking clamping piece in a matching manner, the inner conical taper hole is subjected to thermal refining, and the locking clamping piece is compressed and embedded in the locking taper sleeve by acting force during working; the quick connector is also provided with a limiting sleeve, when the disc steel strand is inserted into the locking clamping piece, the thread inner hole of the clamping piece is smaller under the action of the spring, the clamping piece can move upwards along the situation, and in order to prevent the clamping piece from being separated from the taper sleeve due to too large clearance and control the self-locking time to be shortened as much as possible, the limiting sleeve limits the moving space of the locking clamping piece in the connecting body; the spring can keep the locking clamping piece smooth and not dislocated in the locking taper sleeve in the non-working state, and the spring can enable the locking clamping piece to quickly complete self-locking in the working state; the connecting body is a fixing and connecting piece for locking two end parts; the quick connector has the advantages of small volume, light weight, low processing cost, convenient and quick installation and disassembly, and capability of meeting the use condition that the tensile requirement is more than or equal to 50 KN.
Drawings
FIG. 1 is a schematic structural view of a quick connector according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a connector according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a locking taper sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a stop collar according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a locking clip according to an embodiment of the present invention.
Description of the main reference numerals:
the cable comprises a connector 10, a connector 1, a connecting body 11, a connecting hole 2, a locking taper sleeve 21, an inner taper hole 3, a locking clamping piece 31, a flaring 31, an inner tooth 32, a limiting sleeve 4, a spring 5, a connecting part 6, a first coiled steel strand 20 and a second coiled steel strand 30.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 5, a quick connector 10 for a coiled steel strand according to a preferred embodiment of the present invention includes a connecting body 1, a locking taper sleeve 2, a locking clip 3, a position-limiting sleeve 4, and a spring 5; the connector 1 is in a cylindrical structure; the locking taper sleeve 2 is arranged at inner holes at two ends of the connecting body 1, the locking taper sleeve 2 comprises an inner taper hole 21 with a large opening facing the inside of the connecting body 1, and an expanding opening 31 is arranged at the inner hole of the small end of the locking taper sleeve 2; the locking clamping pieces 3 are of a saw-tooth-shaped locking structure arranged in a semicircular conical cylinder, and the locking clamping pieces 3 are arranged in the inner conical hole 21 of the locking taper sleeve 2 in a pairwise opposite mode with small ends facing outwards; the spring 5 is arranged in the inner hole of the connecting body 1 and is positioned between the two pairs of locking clamping pieces 3; the limiting sleeve 4 is arranged in the middle of the inner hole of the connecting body 1; the outer conical surfaces of the two pairs of locking clamping pieces 3 are attached to the inner surface of the inner conical hole 21 of the locking taper sleeve 2 by the tension of the spring 5.
Referring to fig. 2 to 5, the connector 1 of the present embodiment is a 45# seamless pipe (actual size)
) Manufacturing; inner bore
The size of the position is matched with the outer diameter (blank size) of the locking taper sleeve 2 which is embedded in the position; and other treatment without chamfering R0.5. The locking taper sleeve 2 is made of No. 45 seamless tube (actual size)
) (ii) a Outer diameter
The size of the hole is matched with the size of the inner hole of the connecting body 1; the locking taper sleeve 2 can ensure that the exposure amount is about 8mm when the locking clamping piece 3 clamps the steel strand of the disc in the manufacturing process. The locking clip 3 is made of 20CrMnTi material and S15.8x1.25 zigzag threads by processing; performing carbonitriding HRC58-64 treatment; and the other unfilled chamfers are R0.5. The stop collar 4 is also made of No. 45 seamless tube material (actual size)
) (ii) a Inner diameter
The dimensions of the hole are matched with the outer diameter of the spring 5. Outer diameter of spring 5
Wire diameter 1.5, height 50.
In some embodiments, the axial length L1 of the outer tapered surface of the locking clip 3 and the axial length L2 of the flared end 31 may be referred to as a ratio of the overall axial length L of the locking clip 3, such as L1: L being about 0.8 and L2: L being about 0.2.
The above dimensional requirements are only schematic, and can only meet the use requirements of the coiled steel strand with the corresponding outer diameter specification, and the invention is not limited to this, and can be adjusted according to the coiled steel strand with the actual outer diameter specification.
In some embodiments, the distance from the two ends of the stop collar 4 to the locking taper sleeve 2 is less than the length of the outer conical surface of the locking clip 3. In fact, the distance should be much shorter than the length of the outer conical surface of the locking clip 3, and the distance actually controls the opening degree of the pair of locking clips 3 not to be too large, so that the steel strand can be inserted quickly, and the locking clip 3 can be locked quickly under the tension of the spring 5.
In some embodiments, the inner bore diameter of the stop collar 4 is slightly larger than the outer diameter of the spring 5, but smaller than the outer diameter of the large end of the locking clip 3. Therefore, the spring 5 can be ensured to be smoothly arranged in the inner hole of the limiting sleeve 4, and the two ends of the spring can stably abut against the large ends of the locking clamping pieces 3, so that the pair of locking clamping pieces 3 at the two ends of the spring are always under the tension action of the spring 5.
In some embodiments, the inner diameter of the spring 5 is larger than the outer diameter of the coiled steel strand, which is comparable to the inner bore diameter of the locking clip 3. The small end inner hole of the locking clamping piece 3 is provided with a flared opening 31, and the diameter R1 of the large end of the flared opening 31 is slightly larger than the outer diameter of the steel wire coil. The arrangement of the flaring 31 facilitates the smooth insertion of the coiled steel strand into the inner holes of the pair of locking clips 3. After the coiled steel strand penetrates through the inner holes of the pair of locking clamping pieces 3, the inner diameter of the spring 5 is larger than the outer diameter of the coiled steel strand, so that the coiled steel strand is prevented from interfering with the spring 5 to influence the spring 5 to abut against the large end of the locking clamping piece 3.
In some embodiments, the taper of the outer conical surface of the locking clip 3 matches the taper of the inner conical bore 21 of the locking taper sleeve 2. The taper of this embodiment is about 14 deg..
In some embodiments, the locking structure is a plurality of internal teeth 32 in the shape of saw teeth provided on the inner bore surface of the locking jaw 3. The inner diameter R of the inner teeth 32 may be slightly smaller than the outer diameter of the coiled steel strand, which is advantageous for the locking clip 3 to better lock the coiled steel strand.
In some embodiments, the plurality of internal teeth 32 are uniformly spaced apart, and the central axes of the plurality of internal teeth 32 are coaxial and coincide with the central axis of the internal bore of the locking clip 3.
In some embodiments, a plurality of internal teeth 32 may be uniformly arranged along the circumferential direction of the surface of the internal hole of the locking clip 3, and all the internal teeth 32 are parallel to the central axis of the internal hole, as shown in fig. 5. But is preferably arranged vertically.
In some embodiments, the connection body 1 includes a plurality of connection holes 11 annularly disposed at both ends and the middle of the connection body 1, and the plurality of connection holes 11 are used to fix the locking taper sleeve 2 and the position-limiting sleeve 4 in the connection body 1 by welding or screwing. The connecting portion 6 is formed in the connecting hole 11 by using a filler welding.
In some embodiments, the connecting body 1 can be connected with the locking taper sleeve 2 and the position-limiting sleeve 4 in various ways, one of which is a welding way through the connecting hole 11 as shown in this embodiment. In addition, threaded holes may be formed in the outer circumferential surfaces of the locking taper sleeve 2 and the position-limiting sleeve 4, and then the locking taper sleeve and the position-limiting sleeve are connected with the connector 1 through screws (not shown in this embodiment). For another example, the locking taper sleeve 2 can be rotated to be fixed by the external thread and the internal thread provided at both ends of the connection body 1 by the screw connection (not shown). In addition, the connection problem between the locking taper sleeve 2 and the connecting body 1 can be solved by adopting an inner collar and a stepped hole.
In some embodiments, the connection by welding is relatively simple, but is not easily replaced if the internal components, such as the spring 5, fail. Other connection means such as spring 5 failure replacement, while convenient, also have the problem of screw loosening causing connector failure.
In order to achieve the above object, the present invention provides a method for using a coiled steel strand quick connector, which is applied to the quick connector, the method comprising: an operator inserts one end of a first coil steel strand 20 into flaring 31 of the small end of a pair of locking clamping pieces 3 at one end of a quick connector by hand, overcomes the tension of a spring 5 by using external force to enable the outer conical surfaces of the pair of locking clamping pieces 3 to slide inwards along an inner conical hole 21 of a locking conical sleeve 2, the pair of locking clamping pieces 3 are far away from each other along with the inward sliding of the pair of locking clamping pieces 3, so that inner holes of the pair of locking clamping pieces 3 become larger gradually, one end of the first coil steel strand 20 can rapidly penetrate through the inner holes of the pair of locking clamping pieces 3 and is inserted into the spring 5 under the action of the external force, at the moment, the first coil steel strand 20 is loosened by an author to enable the external force to disappear, the pair of locking clamping pieces 3 are rapidly reset under the action of the spring 5, and a plurality of inner teeth 32 in the inner holes; the operator can quickly insert one end of a second disc of steel strands 30 into the other end of the quick connector by repeating the above steps again; repeating the two steps for multiple times, wherein the multiple first disc steel strands 20 and the multiple second disc steel strands 30 can be sequentially connected together end to end through the multiple quick connectors; when the quick connector is disassembled and unlocked, an operator holds one end of one first coiled steel strand 20 or one second coiled steel strand 30 by one hand, and lightly taps the small ends of the pair of locking clamping pieces 3 along the axial direction of the coiled steel strands by the other hand by using a tool, so that the quick connector can be unlocked, and one end of one first coiled steel strand 20 or one second coiled steel strand 30 can be quickly pulled out.
In summary, the quick connector for the disc steel strand and the use method thereof have the following advantages: the quick connector comprises a locking clamping piece with sawtooth-shaped threads inside, wherein the outer conical surface of the locking clamping piece is subjected to quenching treatment, and the clamping piece threads are meshed with the coiled steel stranded wire through reaction force during working; the inner conical taper hole of the locking taper sleeve of the quick connector is matched with the outer conical surface of the locking clamping piece in a matching manner, the inner conical taper hole is subjected to thermal refining, and the locking clamping piece is compressed and embedded in the locking taper sleeve by acting force during working; the quick connector is also provided with a limiting sleeve, when the disc steel strand is inserted into the locking clamping piece, the thread inner hole of the clamping piece is smaller under the action of the spring, the clamping piece can move upwards along the situation, and in order to prevent the clamping piece from being separated from the taper sleeve due to too large clearance and control the self-locking time to be shortened as much as possible, the limiting sleeve limits the moving space of the locking clamping piece in the connecting body; the spring can keep the locking clamping piece smooth and not dislocated in the locking taper sleeve in the non-working state, and the spring can enable the locking clamping piece to quickly complete self-locking in the working state; the connecting body is a fixing and connecting piece for locking two end parts; the quick connector has the advantages of small volume, light weight, low processing cost, convenient and quick installation and disassembly, and capability of meeting the use condition that the tensile requirement is more than or equal to 50 KN.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A quick connector for coiled steel strands, comprising:
the connecting body is of a cylindrical structure;
the locking taper sleeve is arranged at inner holes at two ends of the connecting body, the locking taper sleeve comprises an inner taper hole with a large opening facing the inside of the connecting body, and an expanding opening is arranged at the inner hole at the small end of the locking taper sleeve;
the locking clamping pieces are in a semi-conical cylinder shape and internally provided with a sawtooth-shaped locking structure, and the locking clamping pieces are arranged in the inner conical holes of the locking taper sleeves in a pairwise opposite mode with small ends facing outwards; and
the spring is arranged in the inner hole of the connecting body and is positioned between the two pairs of locking clamping pieces;
the outer conical surfaces of the two pairs of locking clamping pieces are attached to the inner surface of the inner conical hole of the locking taper sleeve by means of the tension of the spring.
2. The disc steel strand quick connector of claim 1, further comprising a stop collar disposed at the middle of the connector body bore.
3. The disc steel strand quick connector as set forth in claim 2, wherein the distance from the ends of said stop collar to said locking taper sleeve is less than the length of the outer tapered surface of said locking clip.
4. The disc steel strand quick connector of claim 2, wherein the stop collar has an inner bore diameter greater than the outer diameter of the spring but less than the outer diameter of the large end of the locking clip.
5. The disc steel strand quick connector of claim 2, wherein the spring has an inner diameter greater than an outer diameter of the disc steel strand, the outer diameter of the disc steel strand corresponding to the diameter of the inner bore of the locking clip.
6. The disc steel strand quick connector of claim 2, wherein the taper of the outer tapered surface of the locking clip matches the taper of the inner tapered bore of the locking taper sleeve.
7. The disc steel strand quick connector of claim 2, wherein the locking structure is a plurality of saw-tooth shaped internal teeth disposed on the inner bore surface of the locking clip.
8. The quick connector of coiled steel strand as claimed in claim 7, wherein the plurality of internal teeth of saw tooth shape are evenly spaced and have central axes coaxial and coincident with the central axis of the internal bore of the locking clip.
9. The disc steel strand quick connector according to claim 2, wherein the connecting body comprises a plurality of connecting holes annularly formed at both ends and in the middle of the connecting body, and the plurality of connecting holes are used for fixedly connecting the locking taper sleeve and the limiting sleeve in the connecting body by welding or screwing.
10. Use of a quick connector for coiled steel strands, to which the quick connector according to any one of claims 1 to 9 is applied, characterized in that it comprises:
an operator inserts one end of a first disc steel strand into the small-end enlargements of the pair of locking clamping pieces at one end of the quick connector by hand, overcomes the tension of the spring by using external force to enable the outer conical surfaces of the pair of locking clamping pieces to slide inwards along the inner conical hole of the locking taper sleeve, and when the pair of locking clamping pieces slide inwards, the pair of locking clamping pieces are far away from each other, so that the inner holes of the pair of locking clamping pieces are gradually enlarged, one end of the first disc steel strand can rapidly penetrate through the inner holes of the pair of locking clamping pieces and be inserted into the spring under the action of external force, at the moment, the first disc steel strand is loosened by an author to eliminate the external force, the pair of locking clamping pieces can be quickly reset under the tension action of the spring, and the plurality of internal teeth in the inner holes of the pair of locking clamping pieces can quickly clamp the first disc steel strand;
the operator can quickly insert one end of a second steel stranded wire into the other end of the quick connector by repeating the steps again;
repeating the two steps for multiple times, wherein the first disc steel strands and the second disc steel strands can be sequentially connected together in a head-to-tail grounding mode through the quick connectors; and
when the quick connector is disassembled and unlocked, an operator holds one end of one first coiled steel strand or one second coiled steel strand by one hand, and lightly taps the small ends of the pair of locking clamping pieces along the axial direction of the coiled steel strands by the other hand by using a tool, so that the quick connector can be unlocked, and one end of one first coiled steel strand or one second coiled steel strand can be quickly pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774265.7A CN113374831A (en) | 2021-07-08 | 2021-07-08 | Quick connector for coiled steel strand and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774265.7A CN113374831A (en) | 2021-07-08 | 2021-07-08 | Quick connector for coiled steel strand and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113374831A true CN113374831A (en) | 2021-09-10 |
Family
ID=77581516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110774265.7A Pending CN113374831A (en) | 2021-07-08 | 2021-07-08 | Quick connector for coiled steel strand and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113374831A (en) |
-
2021
- 2021-07-08 CN CN202110774265.7A patent/CN113374831A/en active Pending
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