CN214892933U - Detection tool for sling chain - Google Patents

Abstract

The utility model provides a chain sling detects instrument belongs to and detects technical field. The suspension chain comprises a plurality of suspension rings which are connected in sequence, and the suspension rings are mutually and annularly buckled to form the suspension chain. And when the deformation amount of each safety control part of the lifting ring reaches the maximum value allowed by safety, the lifting ring is the limit lifting ring. The lifting chain detection tool comprises at least one detection part corresponding to at least one safety control part of the lifting ring one to one; each detection part of the sling chain detection tool can be matched with the safety control part of the corresponding limit sling. This chain sling detects instrument can judge fast whether the chain sling is in safe scope to can short-term test out the fail safe nature of chain sling.

Description

Detection tool for sling chain

Technical Field

The utility model relates to a detect technical field, especially relate to a chain sling detects instrument.

Background

For a long time, how to quickly detect the safety and reliability of a suspension chain formed by connecting a plurality of suspension rings is a problem which is worried by detection personnel. At present, when a catenary is detected, a detector usually utilizes a vernier caliper to measure and detect the position where the catenary is easily worn. However, because the tonnage of the goods to be hoisted by the hoist chain is heavy, the hoisting rings of the hoist chain are very many, and at least 40 minutes is usually required for detecting one pair of hoist chains. And because the state that the chain sling was placed, use slide caliper can not realize accurate detection to the position that takes place wearing and tearing to can't judge the fail safe nature of chain sling fast. Therefore, an urgent need exists for a tool capable of rapidly detecting the safety and reliability of the hoist chain to reduce the cost of detecting the hoist chain, so as to improve the working efficiency of the detection personnel.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.

Disclosure of Invention

The purpose of this disclosure is to provide a chain sling detects instrument, can the fail safe nature of rapid judgement chain sling.

In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:

according to a first aspect of the present disclosure, a sling chain detection tool is provided for determining safety and reliability of a sling chain, where the sling chain includes a plurality of sequentially connected lifting rings, and the lifting rings are fastened together to form the sling chain;

the hanging ring comprises two bending parts which are oppositely arranged in the same plane and a cylindrical part which is connected with the two bending parts; the two curved portions and the two cylindrical portions may be combined to form at least one safety control portion; when the deformation amount of each safety control part of the lifting ring reaches the minimum value and the maximum value allowed by safety, the lifting ring is a limit lifting ring;

the lifting chain detection tool comprises at least one detection part which is in one-to-one correspondence with at least one safety control part of the lifting ring; each detection part of the sling chain detection tool can be matched with the corresponding safety control part of the limit sling.

In an exemplary embodiment of the present disclosure, the sling chain detection tool includes a base plate and a hanging hole disposed on the base plate, and a holding portion is further disposed on the base plate.

In one exemplary embodiment of the present disclosure, the safety control portion includes a first safety control portion composed of two of the cylindrical portions of the hoist ring;

the detection part comprises a first detection part, the first detection part is provided with at least one semi-circular arc groove, and the semi-circular arc groove can be matched with any one of the cylindrical parts of the limit lifting ring.

In an exemplary embodiment of the present disclosure, the safety control portion includes a second safety control portion including inner walls of two of the bending portions that are oppositely disposed on the same plane, the detection portion includes a second detection portion having a protruding portion that is capable of fitting with inner walls of the two cylindrical portions of the limit slinger.

In an exemplary embodiment of the present disclosure, the projection has a second groove.

In an exemplary embodiment of the present disclosure, a depth of the second groove is not less than a diameter of the cylindrical portion of the limit suspension ring.

In an exemplary embodiment of the present disclosure, the protrusion has two side walls for cooperating with inner walls of the two bent portions, the two side walls being arranged in parallel; the length of the side wall is not less than the diameter of the cylindrical portion in the extending direction of the side wall.

In an exemplary embodiment of the present disclosure, the safety control portion includes a third safety control portion, the second safety control portion includes two outer walls of the bending portions that are oppositely disposed on the same plane, the detection portion includes a third detection portion, the third detection portion is provided with a rectangular groove, and the rectangular groove can be matched with the outer walls of the two bending portions of the limit hanging ring.

In an exemplary embodiment of the present disclosure, a depth of the rectangular groove may be greater than a radius of the bent portion of the limit suspension ring.

In an exemplary embodiment of the present disclosure, a bottom of the rectangular groove is provided with a first groove having a diameter larger than an initial diameter of the cylindrical portion.

This hoist chain detection instrument of embodiment of this disclosure, when carrying out the hoist chain and detecting, the safety control portion of corresponding rings that await measuring is blocked to the detection portion block that directly detects the hoist chain detection instrument, can judge fast whether each safety control portion is in the wearing and tearing scope, and then can judge fast whether rings are in the wearing and tearing scope, consequently can detect out the fail safe nature of hoist chain fast.

Compare in the technical scheme that traditional chain sling detected, the chain sling detection instrument of this application need not to utilize slide caliper to measure one by one the chain sling wearing and tearing department and detect, and can avoid because the chain sling tonnage is too big and the measurement that leads to is inconvenient. In addition, the hanging chain detection tool is small in mass, simple in structure and convenient to carry.

To sum up, this chain sling detects instrument can whether each rings is in the wearing and tearing scope by the snap judgments, and then can the fail safe nature of short-term test chain sling. This chain sling detects instrument has improved the detection efficiency of rings, has reduced the cost that rings detected, and then has improved the detection efficiency of chain sling and has reduced the detection cost of chain sling.

Drawings

The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural view of a suspension chain according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a sling chain detection tool according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a lifting ring according to an embodiment of the disclosure.

Fig. 4 is a schematic structural diagram of the first detection portion cooperating with the first safety control portion in an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of the second detection portion cooperating with the second safety control portion in one embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a third detection portion cooperating with a third safety control portion in an embodiment of the present disclosure.

The reference numerals of the main elements in the figures are explained as follows:

1. a hoisting ring; 100. a substrate; 101. a grip portion; 102. a first groove; 110. a first detection unit; 120. a second detection unit; 121. a second groove; 130. a third detection unit; 131. a rectangular groove; 140. a hanging hole; 210. a first safety control unit; 220. a second safety control section; 221. a first sub-portion; 222. a second sub-portion; 230. a third safety control section; 231. a third subsection; 232. a fourth subsection; 240. a bending section; 250. a cylindrical portion; A. a first direction; B. a second direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.

When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and the like are used to denote the presence of one or more elements, components, or the like; the terms "comprising" and "having" are used in an open-ended inclusive sense and mean that there may be additional elements, etc., in addition to the listed elements, etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.

The disclosed embodiment provides a sling chain detection tool, which is used for rapidly judging the safety and reliability of a sling chain. Referring to fig. 1, the suspension chain comprises a plurality of suspension rings 1 connected in sequence, and the suspension rings 1 are buckled with each other to form the suspension chain; any lifting ring 1 comprises at least one safety control part, the size or shape change of the safety control part is used for reflecting whether the lifting ring is safe and reliable, and further the safety and reliability of the lifting chain can be reflected through the size or shape change of each lifting ring 1.

Referring to fig. 2, the hoist ring 1 of the present disclosure may include two bent portions 240 oppositely disposed in the same plane and a cylindrical portion 250 connecting the two bent portions 240. The two curved portions 240 and the two cylindrical portions 250 may combine to form at least one safety control portion, which is a limit suspension ring when the deformation amount of each safety control portion of the suspension ring 1 reaches a safety-allowed maximum value. And judging the safety and reliability of the hoisting ring to be detected by comparing the sizes of the hoisting ring to be detected and the limit hoisting ring. Correspondingly, the sling chain detection tool comprises at least one detection part in one-to-one correspondence with at least one safety control part of the lifting ring, each detection part of the sling chain detection tool can be matched with the safety control part of the corresponding limit sling chain, and the size designed by the detection part is consistent with the size designed by the safety control part of the corresponding limit lifting ring.

When detecting the suspension ring, an attempt may be made to engage the detection portion of the suspension chain detection tool with the corresponding safety control portion of the suspension ring to be detected. Because the designed size of the detection part is consistent with the designed size of the safety control part of the corresponding limit hanging ring, the clamping condition between the detection part and the corresponding safety control part of the hanging ring to be detected reflects the difference condition between the size of the safety control part of the hanging ring to be detected and the maximum deformation size allowed by the hanging ring. And then, judging the safety reliability of the hanging ring to be detected according to the clamping condition between the detection part and the corresponding safety control part, and further judging the safety reliability of the hanging chain formed by connecting the hanging rings. It is to be noted that the limit sling may be a virtual sling which may be simulated or designed by a safety-allowed maximum value of the sling safety control shape variable, and may be practically non-existent. However, in other cases, the limit suspension ring can also be actually processed as a reference object for comparison with the suspension ring to be tested. Above, can utilize the safety and reliability that the rings that await measuring detected the instrument and judge fast, improve the detection efficiency of rings that await measuring, reduce the cost that rings that await measuring detected, and then improved the detection efficiency of sling chain and reduced the detection cost of sling chain.

The structure, connection mode and functional relationship of the main components of the sling chain detection tool provided by the invention are described in detail below with reference to the attached drawings.

The safety control part of the present disclosure may include a first safety control part 210, a second safety control part 220, a third safety control part 230, or other safety control parts. Referring to fig. 3, the sling chain inspection tool may include a base plate 100 cut by laser, which may ensure the dimensional accuracy of the sling chain inspection tool. The substrate 100 may include a first detection part 110, a second detection part 120, a third detection part 130, or other detection parts.

The first detection part 110 of the sling chain detection tool base plate 100 may correspond to the first safety control part 210 of the limit sling, and the size of the first detection part 110 is consistent with the size of the first safety control part 210 of the limit sling; the second detection part 120 of the sling chain detection tool base plate 100 may correspond to the second safety control part 220 of the limit sling, and the designed size of the second detection part 120 is consistent with the designed size of the second safety control part 220 of the limit sling; the third detection part 130 of the sling chain detection tool base plate 100 may correspond to the third safety control part 230 of the limit sling, and the third detection part 130 may have a size designed to be identical to the size designed to be the third safety control part 230 of the limit sling.

It is understood that the hoist chain detection tool shown in fig. 3 includes first to third detection parts. In other embodiments of the present disclosure, the hoist chain detection tool may include only one of the first to third detection parts, or two of them. Compared with the technical scheme that the hanging chain is detected by completely adopting the vernier caliper in the prior art, the detection efficiency of the hanging chain can be improved.

It will be appreciated that as the rings are used for longer periods of time, the wear on the rings increases, resulting in a smaller diameter cylindrical portion 250 of the rings. When the diameter of the cylindrical part 250 of the hanging ring reaches the maximum value allowed by safety, the diameter of the cylindrical part 250 of the hanging ring is equal to that of the cylindrical part 250 of the limit hanging ring. If the diameter of the cylindrical portion 250 of the hanging ring to be tested is larger than or equal to the diameter of the cylindrical portion 250 of the limit hanging ring, it is indicated that the deformation amount of the cylindrical portion 250 of the hanging ring to be tested does not reach the maximum value allowed by safety, and therefore it can be judged that the wear of the cylindrical portion 250 of the hanging ring to be tested is low. If the diameter of the cylindrical part 250 of the hanging ring to be detected is smaller than that of the cylindrical part 250 of the limit hanging ring, the deformation of the cylindrical part 250 of the hanging ring to be detected exceeds the maximum value allowed by safety, so that the abrasion of the cylindrical part 250 of the hanging ring to be detected is high, and therefore, the safety and reliability of a hanging chain formed by sequentially connecting the hanging ring and the hanging ring can be judged to be low.

In other words, assume that the diameter of the limit eye cylindrical portion 250 is a, where the diameter of the eye cylindrical portion 250 to be measured is a₁. If a₁A, the diameter of the cylindrical portion 250 of the hanging ring to be measured is larger than or equal to the diameter of the limit hanging ring cylindrical portion 250, and further the diameter of the cylindrical portion 250 of the hanging ring to be measured is within a safe allowable range, so that the cylindrical portion 250 can be judged to be low in abrasion. If a₁< a, it means that the diameter of the slinger cylindrical portion 250 to be measured is smaller than the diameter of the limit slinger cylindrical portion 250, and further means that the diameter of the slinger cylindrical portion 250 to be measured is not within the safety allowable range, so it can be judged that the abrasion of the cylindrical portion 250 is high.

For example, in one embodiment of the present disclosure, the safety control portion of the lifting ring to be tested may include the first safety control portion 210, and the first safety control portion 210 is composed of two cylindrical portions 250 of the lifting ring. Accordingly, the detection part of the sling chain detection tool may include the first detection part 110, and the first detection part 110 is provided with at least one semi-circular groove having a diameter equal to that of any one of the cylindrical parts 250 of the limit sling.

Referring to fig. 4, when the suspension ring detection is performed, the first detection part 110 of the suspension chain detection tool may be matched with the first safety control part 210 of the suspension ring to be detected. Specifically, the inner wall of the semicircular arc groove on the sling chain detection tool is sequentially matched with the outer wall of the cylindrical part 250 of the sling ring. If the cylindrical portion 250 cannot be clamped or just clamped into the semicircular arc groove, it is indicated that the diameter of the cylindrical portion 250 of the hanging ring to be tested is greater than or equal to the diameter of the cylindrical portion 250 of the limit hanging ring, and thus it is indicated that the diameter of the cylindrical portion 250 of the hanging ring to be tested does not reach the maximum value allowed by safety, and therefore it can be determined that the wear of the first safety control portion 210 of the hanging ring to be tested is low. If there is a gap between the cylindrical portion 250 and the semicircular arc groove when the cylindrical portion 250 is engaged with the semicircular arc groove, it is indicated that the diameter of the cylindrical portion 250 of the hanging ring to be tested is smaller than the diameter of the cylindrical portion 250 of the limit hanging ring, and thus it is indicated that the diameter of the cylindrical portion 250 of the hanging ring to be tested exceeds the safety range, and therefore it can be determined that the wear of the first safety control portion 210 of the hanging ring to be tested is high.

It can be understood that as the use time of the suspension ring increases, the plurality of suspension rings rub against each other, resulting in an increasing distance between the inner walls of the two bent portions 240 on the suspension ring. When the distance between a point A on the inner wall of one bent part 240 of the hanging ring to be tested and a point B on the inner wall of the other bent part 240 reaches the maximum, the distance from A to B is defined as the safety allowable maximum value of the deformation quantity of the second control part of the hanging ring, and the maximum value is equal to the size of the second safety control part of the limit hanging ring. If the distance from the A to the B of the hanging ring to be detected is smaller than or equal to the size of the second safety control part of the limit hanging ring, the deformation amount of the inner walls of the two bent parts of the hanging ring to be detected does not reach the maximum value allowed by safety, and then the abrasion of the inner walls of the two bent parts 240 is low. If the distance between the inner walls of the two bent parts 240 of the hanging ring to be detected is greater than the distance between the inner walls of the two bent parts 240 of the limit hanging ring, it is determined that the deformation amount of the inner walls of the two bent parts 240 of the hanging ring to be detected exceeds the maximum safety allowance value, and further, the abrasion of the two bent parts 240 is high, so that it can be determined that the safety reliability of the hanging chain formed by sequentially connecting the hanging ring and the hanging ring is low.

In other words, it is assumed that the limit suspension ring passes through the central axes of the two curved portions, and two points at which the central axis intersects with the outer walls of the two curved portions are respectively point a and point B, and the distance between the point a and the point B is B, where two points at which the inner walls of the two curved portions 240 of the suspension ring to be tested intersect with the central axes of the two curved portions of the suspension ring to be tested are respectively point a₁Points and B₁Point, A₁Point and B₁Distance of points b₁. If b is₁B is less than or equal to b, which indicates that the distance between the inner walls of the two bent parts 240 of the hanging ring to be tested is less than or equal to the maximum value allowed by the safety of the limit hanging ring. Further, it is described that the deformation amount of the inner walls of the two bent portions 240 of the hanging ring to be tested does not reach the maximum value allowed by safety, so that it can be determined that the inner walls of the two bent portions 240 are low in abrasion. If b is₁And b, the distance between the inner walls of the two bent parts 240 of the hanging ring to be tested is smaller than or equal to the maximum value allowed by the limit hanging ring safety. Further, the deformation amount of the inner walls of the two bent parts 240 of the hanging ring to be tested exceeds the maximum value allowed by safety, so that the inner walls of the two bent parts 240 of the hanging ring to be tested can be judged to be high in abrasion. Therefore, the safety and reliability of the hanging ring and the hanging chain formed by sequentially connecting the hanging rings can be judged to be lower.

In another exemplary embodiment of the present disclosure, the safety control part may include a second safety control part 220, and the second safety control part 220 is composed of inner walls of two bending parts 240 oppositely disposed on the same plane, which are a first sub-part 221 and a second sub-part 222, respectively. Referring to fig. 5, the detecting part of the hoist chain detecting means may include a second detecting part 120. The second detecting part 120 has a protruding part, two ends of which are parallel, wherein a direction parallel to the two ends of the protruding part is a first direction, and a cross section of the protruding part perpendicular to the first direction a may be rectangular. Further, the protrusion has two side walls for fitting with the inner walls of the two bent portions 240, the two side walls being arranged in parallel; the length of the side wall is not less than the diameter of the cylindrical portion 250 in the extending direction of the side wall. And the sum of the extension lengths of the convex parts respectively symmetrical to the direction perpendicular to the first direction is equal to the distance between the inner walls of the two bent parts 240 of the limit hanging ring.

Referring to fig. 5, when the suspension ring is detected, the second detection portion 120 of the suspension chain detection tool may be matched with the second safety control portion 220 of the suspension ring to be detected, so as to determine the wear condition of the second safety control portion 220 of the suspension ring to be detected according to the contact condition between the inner wall of the two bending portions 240 and the outer wall of the protruding portion. If the protruding portion of the second detecting portion 120 cannot be snapped into or just snapped into the two cylindrical portions 250 of the second safety control portion 220, it is described that the distance between the inner walls of the two curved portions 240 of the hanging ring to be tested is smaller than or equal to the distance between the inner walls of the two curved portions 240 of the limit hanging ring, and thus it is described that the deformation amount of the inner walls of the two curved portions 240 of the hanging ring to be tested does not reach the maximum safety allowable value, so it can be determined that the wear of the second safety control portion 220 of the hanging ring to be tested is low. When the second detection unit 120 engages with the two cylindrical portions 250 of the second safety control unit 220, a gap is formed. The distance between the inner walls of the two bent parts 240 of the hanging ring to be tested is larger than the distance between the inner walls of the two bent parts 240 of the limit hanging ring, so that the deformation amount of the inner walls of the two bent parts 240 of the hanging ring to be tested exceeds the maximum value allowed by safety, and therefore, the second safety control part 220 of the hanging ring to be tested can be judged to be high in abrasion. Therefore, the safety and reliability of the hanging ring and the hanging chain formed by sequentially connecting the hanging rings can be judged to be lower.

Alternatively, the protrusion of the second detection part 120 may be provided with a second groove 121, and the second groove 121 may be rectangular, circular arc, or the like. For example, when the second groove 121 is rectangular, the depth of the second groove 121 is not less than the diameter of the limit suspension ring cylindrical portion 250, and the width of the second groove 121 is not limited. When the detection of the hanging ring is performed, the second detection part 120 can be completely inserted into the second safety control part 220 of the hanging ring to be detected, so that the outer side of the protruding part can be tightly attached to the inner side of the cylindrical part 250 of the hanging ring to be detected, the influence caused by the serial connection of a plurality of hanging rings is avoided, and the abrasion condition of the second safety control part 220 of the hanging ring to be detected can be rapidly judged.

Alternatively, a hanging hole 140 may be provided on the base plate 100 of the sling chain inspection tool, and an axis of the hanging hole 140 is perpendicular to the first direction a. And the section of the hanging hole 140 perpendicular to the first direction a may be circular or rectangular. After the detection of the hanging ring is completed, the hanging hole 140 can be used for hanging the hanging chain detection tool on the hook so as to facilitate the next detection.

It will be appreciated that as the life of the eye increases, the wear on the eye also increases, resulting in an increasing distance between the outer walls of the two bends 240 on the eye. When the distance between a point C on the outer wall of one bent portion 240 of the suspension ring to be tested and a point D on the outer wall of the other bent portion 240 reaches the maximum, the distance from C to D is defined as the maximum safety-allowed value of the deformation amount of the third control portion of the suspension ring, and the maximum value is equal to the size of the third safety control portion 230 of the limit suspension ring. If the distance from the hanging ring C to the hanging ring D to be tested is smaller than or equal to the size of the third safety control part 230 of the limit hanging ring, the deformation amount of the outer walls of the two bent parts 240 of the hanging ring to be tested does not reach the maximum safety allowable value, and further the abrasion of the outer walls of the two bent parts 240 is low. If the distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is greater than the distance between the outer walls of the two bent parts 240 of the limit hanging ring, it is described that the deformation amount of the outer walls of the two bent parts 240 of the hanging ring to be tested exceeds the maximum safe allowable value, and further, the abrasion of the two bent parts 240 is higher, so that it can be determined that the safety reliability of the hanging chain formed by sequentially connecting the hanging ring and the hanging ring is lower.

In other words, assuming that the central axis passes through the two bent portions 240 of the limit lifting ring, and two points at which the central axis intersects with the outer walls of the two bent portions 240 are respectively a point C and a point D, a distance between the point C and the point D is C, where two points at which the outer walls of the two bent portions 240 of the lifting ring to be tested intersect with the central axis passing through the two bent portions 240 of the lifting ring to be tested are respectively C₁Point sum D₁Point, C₁Point and D₁Distance of points c₁. If c is₁C is less than or equal to c, which indicates that the distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is less than or equal to the distance between the outer walls of the two bent parts 240 of the limit hanging ring. Further, the distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is safely allowedOut of range, it can be judged that the outer wall wear of the two bent portions 240 is low. If c is₁And c, the distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is smaller than or equal to the distance between the outer walls of the two bent parts 240 of the limit hanging ring. Further, the distance between the outer walls of the two bent portions 240 of the hanging ring to be tested is not outside the safe allowable range, so that it can be determined that the outer walls of the two bent portions 240 of the hanging ring to be tested are high in abrasion.

In another embodiment of the present disclosure, the lifting ring safety control part may include a third safety control part 230, and the third safety control part 230 includes outer walls of two bending parts 240 oppositely disposed on the same plane, which are a third sub-part 231 and a fourth sub-part 232, respectively. Accordingly, the hoist chain detecting means may include a third detecting part 130, and the third detecting part 130 has a protrusion having both ends parallel. Wherein, the direction parallel to the two ends of the convex part is the second direction B. The protruding portion of the third detecting portion 130 is further provided with a rectangular groove 131 along the second direction B, and the length of both ends of the rectangular groove 131 is the same. The length of the rectangular recess 131 perpendicular to the second direction B is equal to the size of the limit suspension ring third safety control portion 230.

Optionally, the base plate 100 of the sling chain detection tool may further include a holding portion 101, and two hyperbolic openings are symmetrically disposed on the holding portion along two sides of the second direction B. The holding part 101 is convenient for an inspector to hold when inspecting the hanging ring.

Referring to fig. 6, when the hanging ring is detected, the third detection portion 130 of the hanging chain detection tool may be matched with the third safety control portion 230 of the hanging ring to be detected, so that the rectangular groove 131 is clamped with the outer walls of the two bent portions 240, and further, the plane where the rectangular groove 131 is located is parallel to the plane where the two bent portions 240 of the hanging ring to be detected are located, and the side wall of the bottom of the rectangular groove 131 is attached to the side wall of the cylindrical portion 240 of the hanging ring to be detected, if the two bent portions 240 cannot be clamped or are just clamped into the rectangular groove 131, it is described that the distance between the outer walls of the two bent portions 240 of the hanging ring to be detected is smaller than or equal to the distance between the outer walls of the two bent portions 240 of the limit hanging ring, and thus it is described that the distance between the outer walls of the two bent portions 240 of the hanging ring to be detected is within the safety allowable range. If there is a gap between the two bent portions 240 when engaging with the rectangular recess 131. The distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is larger than the distance between the outer walls of the two bent parts 240 of the limit hanging ring, so that the distance between the outer walls of the two bent parts 240 of the hanging ring to be tested is not within the safety allowable range.

Alternatively, the depth of the rectangular recess 131 may be greater than the radius of the extreme bail bend 240. When the detection of the hanging ring is carried out, the third safety control part 230 of the hanging ring to be detected can be completely inserted into the rectangular groove 131 of the third detection part 130, and the side wall of the bottom of the rectangular groove 131 is tightly attached to the side wall of the cylindrical part 250 of the hanging ring to be detected, so that the detection result of the hanging ring is more accurate.

Optionally, the bottom of the rectangular recess 131 may be further provided with a first recess 102, the diameter of the first recess 102 being larger than the initial diameter of the cylindrical portion 250 of the suspension ring, it being understood that the initial diameter of the cylindrical portion 250 is the size of the diameter of the cylindrical portion 250 when the suspension ring is not in use. The arrangement of the first groove 102 can avoid the influence caused by the serial connection of a plurality of lifting rings on one hand, thereby increasing the detection precision of the lifting chain detection tool; on the other hand, the weight of the sling chain detection tool can be reduced, so that the portability of the sling chain detection tool is improved. In other embodiments, the shape of the first groove 102 is not limited, and may be circular or rectangular, so as not to affect the use of the rectangular groove 131.

In an embodiment of the disclosure, when the deformation amount of all the safety control portions of each hanging ring to be tested does not reach the maximum value of the safety allowance, it can be stated that each hanging ring to be tested is within the safety allowance range, and further, it can be stated that the wear of each hanging ring to be tested is low, so that it can be judged that the hanging chain formed by each hanging ring is safe and reliable.

It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the description. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall outside the scope of the present disclosure. It will be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.

Claims (10)

1. The utility model provides a chain sling detects instrument for detect the fail safe nature of chain sling, the chain sling includes a plurality of rings that connect gradually, and is a plurality of rings each other the ring is detained mutually and is formed the chain sling, its characterized in that:

the hanging ring comprises two bending parts which are oppositely arranged in the same plane and two cylindrical parts which are connected with the two bending parts; the two curved portions and the two cylindrical portions may be combined to form at least one safety control portion; when the deformation amount of each safety control part of the lifting ring reaches the maximum value allowed by safety, the lifting ring is a limit lifting ring;

the lifting chain detection tool comprises at least one detection part corresponding to at least one safety control part of the lifting ring one to one; each detection part of the sling chain detection tool can be matched with the corresponding safety control part of the limit sling.

2. The hanging chain detection tool of claim 1, wherein the hanging chain detection tool comprises a base plate and a hanging hole arranged on the base plate, and a holding part is further arranged on the base plate.

3. The sling chain detection tool of claim 1, wherein the safety control portion comprises a first safety control portion comprised of two of the cylindrical portions of the sling;

the detection part comprises a first detection part, the first detection part is provided with at least one semi-circular arc groove, and the semi-circular arc groove can be matched with any one of the cylindrical parts of the limit lifting ring.

4. The sling chain detection tool of claim 1, wherein the safety control portion comprises a second safety control portion comprising inner walls of two of the curved portions disposed opposite each other in a same plane, and the detection portion comprises a second detection portion having a protrusion capable of engaging with inner walls of the two cylindrical portions of the limit sling.

5. The hoist chain detection tool of claim 4, wherein the projection has a second groove.

6. The hoist chain detection tool of claim 5, wherein the depth of the second recess is not less than the diameter of the cylindrical portion of the limit hoist ring.

7. The hoist chain detection tool of claim 4, wherein the protrusion has two side walls for engaging with inner walls of the two curved portions, the two side walls being arranged in parallel; the length of the side wall is not less than the diameter of the cylindrical portion in the extending direction of the side wall.

8. The sling chain detection tool of claim 1, wherein the safety control portion comprises a third safety control portion, the third safety control portion comprises outer walls of two of the bending portions oppositely arranged on the same plane, the detection portion comprises a third detection portion, the third detection portion is provided with a rectangular groove, and the rectangular groove can be matched with the outer walls of the two bending portions of the limit sling.

9. The hoist chain detection tool of claim 8, wherein the depth of the rectangular recess is greater than the radius of the bend of the limit hoist link.

10. The hoist chain detection tool of claim 8, wherein the bottom of the rectangular recess is provided with a first recess having a diameter larger than an initial diameter of the cylindrical portion.

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