CN117754485A - Clamping and positioning device for flaw detection of steel wire rope - Google Patents

Abstract

The invention discloses a clamping and positioning device for flaw detection of a steel wire rope, which comprises a clamping mechanism and a positioning mechanism, wherein the clamping mechanism comprises two clamping wheels and two ruler strips, the two clamping wheels are distributed on the left side and the right side of the steel wire rope side by side, each clamping wheel comprises a rotary table and a rotary opening and closing disc, the rotary opening and closing disc is mounted in the rotary table in a fitting way and comprises a plurality of tooth sheets distributed in a surrounding way, and each tooth sheet has a movement stroke of rotating to stretch out or retract back into the rotary table in a rotating way. According to the clamping mechanism, the two clamping wheels distributed side by side are slidably adjusted along the ruler strip, so that the clamping can be performed from any position of the steel wire rope, sleeving is not needed from the end head of the steel wire rope, the rotary opening and closing disc is rotatably adjusted, the tooth plates are meshed with the steel wire rope to be locked in a state of rotatably extending the tooth plates, the clamping wheels are prevented from moving, and the clamping firmness of the clamping mechanism on the steel wire rope is enhanced.

Description

Clamping and positioning device for flaw detection of steel wire rope

Technical Field

The invention relates to the technical field of steel wire rope detection, in particular to a clamping and positioning device for steel wire rope flaw detection.

Background

Steel wire ropes are often used in hoisting, hoisting and carrying heavy objects in many heavy and high risk industries, such as mining, construction, port loading and unloading, offshore drilling, etc. The steel wire rope can have potential safety hazards such as abrasion, corrosion, fatigue fracture and the like in a working environment which bears heavy pressure and continuous friction for a long time or after being used under extreme conditions. If these problems are not found and handled in time, sudden breakage of the wire rope may be caused, thereby causing serious accidents such as falling of heavy objects, overturning of equipment and the like, and endangering life safety of operators and surrounding workers. Therefore, the potential safety hazard can be found in time through regular flaw detection of the steel wire rope, and the potential risk of a workplace can be greatly reduced after necessary maintenance or replacement measures are taken.

The wire rope need be in advance to wait to detect the section position of selecting when detecting a flaw and straighten fixed, and fixing device among the prior art generally adopts the suit formula structure, establishes and slides along the wire rope cover until remove to wait to detect the section position and fix with the location, and the device is relatively poor in convenience and flexibility in the operation, is difficult to satisfy the quick location and the steady fixed of the arbitrary section position of wire rope.

Disclosure of Invention

The clamping and positioning device for flaw detection of the steel wire rope, which is provided by the invention, is flexible and convenient to operate, and can be used for clamping quickly and stably, and at least one of the technical problems can be solved.

In order to solve the technical problems, the invention adopts the following technical scheme: the clamping and positioning device for the flaw detection of the steel wire rope comprises a clamping mechanism and a positioning mechanism, wherein the clamping mechanism is horizontally clamped at any part of the steel wire rope, and the positioning mechanism is vertically clamped along the length direction of the steel wire rope and is connected with the clamping mechanism at intervals;

the clamping mechanism comprises two clamping wheels and two strips, wherein the two clamping wheels are distributed on the left side and the right side of the steel wire rope side by side, one clamping wheel is fixedly installed with the strips, the other clamping wheel is slidably installed with the strips, the clamping wheels comprise a rotary table and a rotary opening and closing disc, the rotary opening and closing disc is mounted in the rotary table in a fitting way, the clamping wheels comprise a plurality of tooth sheets distributed in a surrounding way, and each tooth sheet has a movement stroke of rotating to stretch out or retract back into the rotary table in a closing way;

the positioning mechanism comprises a clamping assembly and an anti-loosening assembly, the clamping assembly is clamped and installed on the steel wire rope in an adjustable tightness mode, and the anti-loosening assembly is two in number, is fixed on the left side and the right side of the clamping assembly respectively and is detachably connected with the two clamping wheels.

Further, the positioning mechanism is provided with one, is arranged above or below the clamping mechanism, and is connected with the clamping mechanism to form a triangular structure.

Further, the two positioning mechanisms are arranged above and below the clamping mechanism in a mirror image mode and are connected with the clamping mechanism to form a triangular structure.

Further, the ruler strip and the steel wire rope are vertically distributed, one end of the ruler strip is a fixed end, the other end of the ruler strip is an open end, a sliding groove is formed in the ruler strip along the length direction, the sliding groove is communicated with the open end, the clamping wheel located on one side of the steel wire rope is fixedly installed with the fixed end, and the clamping wheel located on the other side of the steel wire rope can pass through the open end to slide along the sliding groove until the steel wire rope is abutted to the clamping wheel.

Further, the two turntables abutting against the two sides of the steel wire rope can synchronously rotate and lift along the length direction of the steel wire rope, annular grooves are formed in the turntables along the circumferential direction, a plurality of limiting grooves are formed in the turntables in a surrounding mode, tooth plates are attached to the turntables in a clamping mode and are matched with the limiting grooves in a one-to-one sliding mode, and the tooth plates can rotate out of the annular grooves in a sliding mode around the circle centers of the turntables and along the limiting grooves until the tooth plates are clamped with the steel wire rope and locked.

Further, the block subassembly includes outer joint pipe, outer joint pipe is including can follow wire rope length direction joint's outer tube piece that opens and shuts, outer tube piece has two, all is semi-circular arc plate structure, and one end links to each other by spring elastic hinge, and the other end is by profile of tooth mouth open and close interlock matching, and each outer tube piece is located and all is fixed with on the lateral wall of articulated end and is used for opening or closure the handle of profile of tooth mouth.

Further, the clamping assembly further comprises an inner pipe piece and an elastic piece, wherein the inner pipe piece is arranged on the inner side of the outer pipe piece and fixedly connected with the outer pipe piece through a plurality of elastic pieces, and the inner pipe piece is of a semicircular arc plate structure and can be attached to and elastically abutted to the steel wire rope along the length direction.

Further, a plurality of grooves are formed in the inner wall surface of the inner pipe piece at intervals, balls are embedded in the grooves in a rolling mode, and the balls can be attached to and roll and slide along the steel wire rope.

Further, locking subassembly includes T word connecting seat and connection piece, the T word connecting seat is fixed the outer wall of outer joint pipe, the connection piece has two, locates respectively the both sides of T word connecting seat, and each the one end of connection piece all with the T word connecting seat links to each other, the other end with the centre of a circle on carousel front or back links to each other.

Further, the clamping wheel further comprises a plurality of locking pieces, the locking pieces are detachably mounted at the circle center positions of the front face and the back face of the rotary disc respectively, each locking piece comprises a gasket and a locking bolt piece, the gaskets are attached to the ruler strip, and the locking bolt pieces penetrate through the gaskets and are inserted into the rotary disc in a threaded mode and are used for locking the ruler strip, the rotary opening and closing disc and the connecting sheet.

The beneficial effects of the invention are as follows:

1. according to the clamping mechanism, the two clamping wheels which are distributed side by side are adjusted in a sliding mode along the ruler strip, clamping can be carried out from any position of the steel wire rope, sleeving is not needed from the end head of the steel wire rope, operation is flexible and convenient, the rotating opening and closing disc is adjusted through rotation, the two clamping wheels clamp the steel wire rope relatively in a state of rotating and retracting the tooth sheet, the clamping wheels can synchronously move along the steel wire rope, the specific clamping position is further adjusted, the tooth sheet is meshed and locked with the steel wire rope in a state of rotating and extending the tooth sheet, movement of the clamping wheels is prevented, and the firmness of the clamping mechanism on clamping of the steel wire rope is enhanced.

2. According to the invention, the positioning mechanism is matched with the clamping mechanism for use, the upper end, the lower end or the steel wire ropes at the upper end and the lower end of the clamping mechanism are clamped and fixed along the length direction, the steel wire ropes are not required to be sleeved from the ends of the steel wire ropes, the operation is flexible and convenient, the positioning mechanism is used for isolating the section selecting part to be detected from other parts of the steel wire ropes, the interference influence caused by disturbance of other parts on the section selecting part to be detected is reduced, and the detection accuracy is improved.

3. In the invention, the positioning mechanism is detachably connected with the clamping mechanism, and the clamping assembly, the anti-loose assembly, the clamping wheel and the ruler strip are arranged outside the steel wire rope and are sequentially connected to form a triangular structure, so that the clamping firmness of the steel wire rope is further improved.

Drawings

Fig. 1 is a schematic view of an embodiment of the invention assembled with a steel wire rope with the whole device in the open state of the clamping mechanism tooth plates.

Fig. 2 is a schematic diagram showing the assembly of the whole device with a steel wire rope in a state that the clamping mechanism teeth are closed.

Fig. 3 is a schematic view of the overall structure of the open state of the teeth of the clamping mechanism according to the embodiment of the present invention.

Fig. 4 is a schematic diagram showing switching from the closing to the opening of the rotary shutter disk according to the embodiment of the present invention.

Fig. 5 is a front cross-sectional view of the snap-fit assembly of the present invention with a wire rope.

FIG. 6 is a top view of a positioning mechanism according to an embodiment of the invention.

The components in the drawings are marked as follows: 1. a wire rope; 2. a clamping mechanism; 3. a positioning mechanism; 4. a pinch roller; 5. a ruler strip; 501. a fixed end; 502. an open end; 503. a chute; 6. a clamping assembly; 7. an anti-loosening component; 8. a turntable; 9. rotating the opening and closing disc; 901. a tooth plate; 10. a locking member; 11. an outer bayonet tube; 1101. an outer segment; 1102. a spring; 1103. a handle; 1104. a tooth-shaped opening; 12. an inner segment; 1201. a ball; 13. an elastic member; 14. a T-shaped connecting seat; 15. and a connecting sheet.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, "a plurality of" means two or more.

Referring to fig. 1-2, an embodiment of the invention provides a clamping and positioning device for flaw detection of a steel wire rope, which is used for the steel wire rope 1 and comprises a clamping mechanism 2 and a positioning mechanism 3, wherein the clamping mechanism 2 is horizontally clamped at any position of the steel wire rope 1, and the positioning mechanism 3 is vertically clamped along the length direction of the steel wire rope 1 and is connected with the clamping mechanism 2 at intervals;

the clamping mechanism 2 comprises two clamping wheels 4 and a ruler strip 5, wherein the two clamping wheels 4 are distributed on the left side and the right side of the steel wire rope 1 side by side, one clamping wheel is fixedly installed with the ruler strip 5, the other clamping wheel is slidably installed with the ruler strip 5, the clamping wheels 4 comprise a rotary table 8 and a rotary opening and closing disc 9, the rotary opening and closing disc 9 is mounted in the rotary table 8 in a fitting manner, the clamping mechanism comprises a plurality of tooth plates 901 which are distributed in a surrounding manner, and each tooth plate 901 has a movement stroke of rotating to stretch out or retract back into the rotary table 8;

the positioning mechanism 3 comprises a clamping assembly 6 and an anti-loosening assembly 7, the clamping assembly 6 is clamped and installed on the steel wire rope 1 in an adjustable tightness mode, and the anti-loosening assembly 7 is provided with two clamping wheels, is respectively fixed on the left side and the right side of the clamping assembly 6, and is detachably connected with the two clamping wheels 4.

According to the clamping mechanism, two clamping wheels which are distributed side by side are adjusted in a sliding manner along the ruler strip, clamping can be carried out from any position of the steel wire rope, sleeving is not needed from the end head of the steel wire rope, operation is flexible and convenient, the rotating opening and closing disc is adjusted through rotation, the two clamping wheels clamp the steel wire rope relatively in a state of rotating and retracting the tooth sheet, the clamping wheels can synchronously move along the steel wire rope, the clamping specific position is further adjusted, and the tooth sheet is locked with the steel wire rope in a meshed manner in a state of rotating and extending the tooth sheet, so that the clamping wheels are prevented from moving, and the clamping firmness of the clamping mechanism on the steel wire rope is enhanced; the positioning mechanism is matched with the clamping mechanism to be used, the upper end, the lower end or the steel wire ropes at the upper end and the lower end of the clamping mechanism are clamped and fixed along the length direction, the ends of the steel wire ropes are not required to be sleeved, the operation is flexible and convenient, the section selecting part to be detected and other parts of the steel wire ropes are isolated, the interference influence caused by disturbance of other parts to the section selecting part to be detected is reduced, and the detection accuracy is improved.

Referring to fig. 1-2, in this embodiment, the positioning mechanism 3 has one, which is disposed above or below the clamping mechanism 2 and is connected to the clamping mechanism 2 in a triangular structure. In this way, according to the actual position of the section selecting part to be detected on the steel wire rope 1, one or two positioning mechanisms 3 are selectively installed, if one positioning mechanism 3 is selectively installed, the positioning mechanism 3 is arranged at the upper end or the lower end of the clamping mechanism 2, the clamping assembly 6 is clamped on the steel wire rope 1, the two clamping wheels 4 are clamped on two sides of the steel wire rope 1, the ruler strip 5 and the two anti-loose assemblies 7 are sequentially connected with the two clamping wheels 4 and the clamping assembly 6 to form a triangle structure, and the connection stability of the clamping mechanism 2 and the positioning mechanism 3 and the clamping stability of the steel wire rope 1 are improved.

Referring to fig. 1-2, in another embodiment, the positioning mechanism 3 has two mirror images disposed above and below the clamping mechanism 2, and is connected to the clamping mechanism 2 in a triangular structure. In such design, according to the actual position of the section selecting position to be detected on the steel wire rope 1, one or two positioning mechanisms 3 are selectively installed, if two positioning mechanisms 3 are selectively installed, the two positioning mechanisms 3 are arranged at the upper end and the lower end of the clamping mechanism 2, the ruler strip 5, the anti-loose assembly 7 and the clamping wheel 4 are sequentially connected with the clamping assembly 6 to form a triangular structure, and the connection stability of the clamping mechanism 2 and the positioning mechanism 3 and the clamping stability of the steel wire rope 1 are improved.

Referring to fig. 3, in this embodiment, the blade 5 is vertically distributed with the wire rope 1, one end of the blade 5 is a fixed end 501, the other end is an open end 502, a chute 503 is formed in the blade 5 along the length direction, the chute 503 is communicated with the open end 502, the clamping wheel 4 located at one side of the wire rope 1 is fixedly mounted with the fixed end 501, and the clamping wheel 4 located at the other side of the wire rope 1 can slide along the chute 503 through the open end 502 until abutting against the wire rope 1. In this way, one clamping wheel 4 is fixedly assembled with the fixed end 501 of the ruler strip 5 and can rotate around the fixed end 501, the ruler strip 5 transversely passes through one end or two ends of a section part to be detected of the steel wire rope 1, so that the clamping wheel 4 is attached to the steel wire rope 1, the other clamping wheel 4 can pass through the ruler strip 5, slide along the sliding groove 503 and are close to the clamping wheel 4 positioned at the fixed end 501 until the steel wire rope 1 is abutted, and therefore the steel wire rope 1 is clamped between the two clamping wheels 4 without sleeving from the end head of the steel wire rope 1.

Referring to fig. 4, in this embodiment, two turntables 8 abutting against two sides of the steel wire rope 1 may rotate synchronously along the length direction of the steel wire rope 1, each turntable 8 is provided with a ring groove along the circumferential direction, and a plurality of limit grooves are all formed in the ring, each tooth 901 is attached and clamped in the turntable 8 and is in one-to-one sliding match with each limit groove, and each tooth 901 may slide and rotate out of the ring groove around the center of the turntable 8 and along the limit groove until being clamped and locked with the steel wire rope 1. In this way, the rotary opening and closing disc 9 can be adjusted by rotating the rotary disc 8, the two clamping wheels 4 can relatively clamp the steel wire rope 1 and synchronously move along the steel wire rope 1 in the state that the tooth plate 901 is rotationally retracted into the rotary disc 8, the clamping specific position is further adjusted, and the tooth plate 901 is engaged with the steel wire rope 1 to be locked in the state that the tooth plate 901 is rotationally extended out of the rotary disc 8, so that the clamping wheels 4 are prevented from moving, and the clamping firmness of the clamping mechanism 2 on the steel wire rope 1 is enhanced;

the rotary shutter disk 9 described in the present application may be selected from standard or retrofit rotary shutter devices available in the prior art by the purchasing route.

Referring to fig. 5-6, in this embodiment, the locking assembly 6 includes an outer locking tube 11, the outer locking tube 11 includes an outer tube sheet 1101 that can be opened and closed along the length direction of the steel wire rope 1, the outer tube sheet 1101 has two semicircular arc plate structures, one end is connected by elastic hinge of a spring 1102, the other end is matched by opening and closing the tooth-shaped opening 1104, and a handle 1103 for opening or closing the tooth-shaped opening 1104 is fixed on the outer side wall of each outer tube sheet 1101 located at the hinged end. By means of the design, the two outer tube sheets 1101 can be opened or closed by manually holding the handle 1103, clamping of any position on the steel wire rope 1 is achieved, the clamp structure in the prior art can be referred to, sleeving is not needed from the end head of the steel wire rope 1, operation is more flexible and convenient, tooth-shaped opening 1104 structures are adopted at the mutually contradicted ends of the two outer tube sheets 1101, the fastening degree of occlusion is further improved, and the clamping assembly 6 is prevented from falling off from the steel wire rope 1.

Referring to fig. 5-6, in this embodiment, the locking assembly 6 further includes an inner tube sheet 12 and an elastic member 13, where the inner tube sheet 12 is disposed on the inner side of the outer tube sheet 1101 and is fixedly connected to the outer tube sheet 1101 via a plurality of elastic members 13, and the inner tube sheet 12 is in a semicircular arc plate structure, and can be attached to and elastically abutted against the steel wire rope 1 along the length direction. By such design, the inner pipe 12 is attached to and abuts against the steel wire rope 1 under the elastic supporting action of the outer pipe 1101 and the elastic member 13, so as to improve the stability of the clamping assembly 6 to the steel wire rope 1.

Referring to fig. 5-6, in this embodiment, a plurality of grooves are spaced apart on the inner wall surface of the inner pipe 12, and balls 1201 are rollingly embedded in each groove, and the balls 1201 can be engaged and rollingly slid along the steel wire rope 1. By such design, under the action of rolling friction of the ball 1201, friction force between the inner pipe piece 12 and the steel wire rope 1 can be reduced, and the clamping assembly 6 can smoothly slide along the steel wire rope 1 after stably clamping the steel wire rope 1, so that the specific clamping position can be adjusted.

Referring to fig. 6, in this embodiment, the locking assembly 7 includes a T-shaped connecting seat 14 and connecting pieces 15, the T-shaped connecting seat 14 is fixed on the outer wall of the outer clamping tube 11, the connecting pieces 15 are two, and are respectively disposed on two sides of the T-shaped connecting seat 14, and one end of each connecting piece 15 is connected with the T-shaped connecting seat 14, and the other end is connected with the center of the front or back of the turntable 8. By means of the design, the locking assembly 7 is connected with the clamping assembly 6 and the clamping mechanism 2 through the connecting piece 15, so that the connection stability of the clamping mechanism 2 and the positioning mechanism 3 can be improved, and the clamping stability of the steel wire rope 1 is improved by constructing a triangular connection structure.

Referring to fig. 1-3, in this embodiment, the clamping wheel 4 further includes a plurality of locking members 10, where the locking members 10 are detachably mounted at the center positions of the front and back sides of the turntable 8, and the locking members 10 include a spacer and a locking bolt member, where the spacer is attached to the tape 5, and the locking bolt member passes through the spacer and is threaded into the turntable 8, so as to lock the tape 5, the rotary shutter 9, and the connecting piece 15. By means of the design, the device adopts the detachable mounting structure, and the locking piece 10 can be used for fixing a plurality of parts, so that the device is simple and easy to operate.

In summary, the clamping mechanism can clamp from any position of the steel wire rope by sliding and adjusting the two clamping wheels distributed side by side along the ruler strip, the steel wire rope is not required to be sleeved from the end of the steel wire rope, the operation is flexible and convenient, the rotating opening and closing disc is adjusted by rotation, the two clamping wheels relatively clamp the steel wire rope in a state of rotating and retracting the tooth sheet, the clamping wheels can synchronously move along the steel wire rope, the specific clamping position is further adjusted, and the tooth sheet is meshed and locked with the steel wire rope in a state of rotating and extending the tooth sheet, so that the clamping wheels are prevented from moving, and the firmness of the clamping mechanism on the steel wire rope is enhanced; the positioning mechanism is matched with the clamping mechanism for use, the upper end, the lower end or the steel wire ropes at the upper end and the lower end of the clamping mechanism are clamped and fixed along the length direction, the steel wire ropes do not need to be sleeved from the ends of the steel wire ropes, the operation is flexible and convenient, the positioning mechanism is used for isolating the section selecting part to be detected of the steel wire ropes from other parts, the interference influence caused by disturbance of other parts on the section selecting part to be detected is reduced, and the detection accuracy is improved; the positioning mechanism is detachably connected with the clamping mechanism, the clamping assembly, the anti-loose assembly, the clamping wheel and the ruler strip are arranged outside the steel wire rope and are sequentially connected to form a triangular structure, and the firmness of clamping the steel wire rope is further improved.

It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.

Claims (10)

1. Clamping and positioning device for flaw detection of steel wire rope is used for steel wire rope (1), and is characterized in that: the device comprises a clamping mechanism (2) and a positioning mechanism (3), wherein the clamping mechanism (2) is horizontally clamped at any position of the steel wire rope (1), and the positioning mechanism (3) is vertically clamped along the length direction of the steel wire rope (1) and is connected with the clamping mechanism (2) at intervals;

the clamping mechanism (2) comprises two clamping wheels (4) and strips (5), wherein the two clamping wheels (4) are distributed on the left side and the right side of the steel wire rope (1) side by side, one clamping wheel is fixedly installed with the strips (5), the other clamping wheel is slidably installed with the strips (5), the clamping wheels (4) comprise a rotary table (8) and a rotary opening and closing disc (9), the rotary opening and closing disc (9) is mounted in the rotary table (8) in a fitting mode, the rotary opening and closing disc comprises a plurality of annularly distributed tooth sheets (901), and each tooth sheet (901) has a motion stroke of rotating to stretch out or retract into the rotary table (8) in a rotary opening and closing mode;

the positioning mechanism (3) comprises a clamping assembly (6) and an anti-loosening assembly (7), the clamping assembly (6) is clamped and installed on the steel wire rope (1) in an adjustable tightness mode, the anti-loosening assembly (7) is provided with two clamping wheels, and the two clamping wheels are respectively fixed on the left side and the right side of the clamping assembly (6) and detachably connected with the two clamping wheels (4).

2. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the positioning mechanism (3) is provided with one, is arranged above or below the clamping mechanism (2), and is connected with the clamping mechanism (2) to form a triangular structure.

3. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the two positioning mechanisms (3) are arranged above and below the clamping mechanism (2) in a mirror image mode, and are connected with the clamping mechanism (2) to form a triangular structure.

4. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the ruler strip (5) and the steel wire rope (1) are vertically distributed, one end of the ruler strip (5) is provided with a fixed end (501), the other end of the ruler strip (5) is provided with an opening end (502), a sliding groove (503) is formed in the ruler strip (5) along the length direction, the sliding groove (503) is communicated with the opening end (502), the clamping wheel (4) on one side of the steel wire rope (1) is fixedly installed with the fixed end (501), and the clamping wheel (4) on the other side of the steel wire rope (1) can penetrate through the opening end (502) to slide along the sliding groove (503) until the steel wire rope (1) is abutted tightly.

5. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the two turntables (8) which are abutted against the two sides of the steel wire rope (1) can synchronously rotate and lift along the length direction of the steel wire rope (1), annular grooves are formed in the turntables (8) along the circumferential direction, a plurality of limit grooves are formed in the annular grooves in a surrounding mode, tooth plates (901) are attached to and clamped in the turntables (8) and are in one-to-one sliding fit with the limit grooves, and the tooth plates (901) can wind the circle center of the turntables (8) and slide out of the annular grooves along the limit grooves until the tooth plates are clamped with the steel wire rope (1) and locked.

6. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the clamping assembly (6) comprises an outer clamping pipe (11), the outer clamping pipe (11) comprises an outer pipe piece (1101) which can be opened and closed along the length direction of the steel wire rope (1), the outer pipe piece (1101) is provided with two semicircular arc plate structures, one ends of the outer pipe piece are connected through elastic hinging of a spring (1102), the other ends of the outer pipe piece are matched through opening and closing of a tooth-shaped opening (1104), and handles (1103) used for opening or closing the tooth-shaped opening (1104) are respectively fixed on the outer side wall of the hinging end of the outer pipe piece (1101).

7. The clamping and positioning device for detecting flaw of steel wire rope according to claim 6, wherein: the clamping assembly (6) further comprises an inner pipe piece (12) and an elastic piece (13), the inner pipe piece (12) is arranged on the inner side of the outer pipe piece (1101), the inner pipe piece is fixedly connected with the outer pipe piece (1101) through a plurality of elastic pieces (13), and the inner pipe piece (12) is of a semicircular arc plate structure and can be attached to and elastically abutted to the steel wire rope (1) along the length direction.

8. The clamping and positioning device for detecting flaw of steel wire rope according to claim 7, wherein: a plurality of grooves are formed in the inner wall surface of the inner pipe piece (12) at intervals, balls (1201) are embedded in the grooves in a rolling mode, and the balls (1201) can be attached to and roll and slide along the steel wire rope (1).

9. The clamping and positioning device for detecting flaw of steel wire rope according to claim 6, wherein: the anti-loosening assembly (7) comprises a T-shaped connecting seat (14) and connecting pieces (15), wherein the T-shaped connecting seat (14) is fixed on the outer wall of the outer clamping tube (11), the connecting pieces (15) are two and are respectively arranged on two sides of the T-shaped connecting seat (14), one end of each connecting piece (15) is connected with the T-shaped connecting seat (14), and the other end of each connecting piece is connected with the circle center of the front face or the back face of the rotary disc (8).

10. The clamping and positioning device for flaw detection of steel wire ropes as claimed in claim 1, wherein: the clamping wheel (4) further comprises a plurality of locking pieces (10), the locking pieces (10) are respectively detachably mounted at the circle center positions of the front face and the back face of the rotary table (8), the locking pieces (10) comprise gaskets and locking bolt pieces, the gaskets are attached to the ruler strips (5), and the locking bolt pieces penetrate through the gaskets and are inserted into the rotary table (8) in a threaded mode and are used for locking the ruler strips (5), the rotary opening and closing disc (9) and the connecting pieces (15).