A non-stinging wire rope hoisting rig

Abstract

The present application relates to steel wire rope rigging technical field, specifically disclose a kind of non-stinging steel wire rope hoisting rigging, including main rope, the both ends of the main rope are provided with end segment, on the main rope, close to the end segment is provided with the section of insertion and weaving, the end segment includes multiple strands;The section of insertion and weaving is reversely twisted in the direction of spiral line before insertion and weaving and is formed with hollow part, and the hollow part is inserted with the clamping of tight batten.The plate edge and bending part of staggered lap joint form a semi-closed structure with elastic deformation space, and the strands are guided and stored in the inner side thereof, when the rigging is pulled, the radial shrinkage force of the main rope will continuously extrude the clamping of tight batten, and the clamping of tight batten is extruded and engaged, so that it is deformed, and the protrusions inside form multi-point and three-dimensional clamping for each strand, further enhance the internal friction and mechanical engagement force.The burrs and protrusions in the traditional insertion and weaving mode are avoided, and the scratch on goods or equipment during hoisting is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel wire rope rigging, in particular to a non-stinging steel wire rope hoisting rigging. BACKGROUND

[0002] In the hoisting and transportation industry, steel wire rope hoisting rigging is an indispensable important tool, widely used in port, construction, mine and other fields. The traditional steel wire rope hoisting rigging usually adopts a simple insertion and weaving method, that is, the end section of the steel wire rope is bent back and inserted into the insertion and weaving section of the main rope, and is fixed by multiple insertion. However, the strength of the insertion joint after the traditional insertion and weaving method is insufficient, and it is easy to break or slip under heavy load. The mechanical locking force and static friction force between the joint and the main rope are insufficient, and it is difficult to withstand large tonnage hoisting tasks, which has safety hazards. After being stressed, the traditional insertion and weaving method expands outward to form burrs or protrusions, which can easily cause the appearance of the insertion joint to be uneven, not only affecting the appearance, but also possibly scratching the goods or equipment during hoisting. When hoisting and unhooking, the ordinary rigging has burrs, which, after being used for a period of time, act like barbs and have resistance when being pulled out, and when the trolley is pulled out, the rigging has a rebound inertia fling force, which may accidentally injure the on-site operators. Therefore, developing a new type of non-stinging steel wire rope hoisting rigging to improve its strength, friction and service life has become a technical problem to be solved in the industry. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a non-stinging steel wire rope hoisting rigging, which solves the problems of insufficient strength of the insertion joint of the existing steel wire rope rigging, insufficient mechanical locking force and static friction force between the joint and the main rope, difficulty in withstanding large tonnage hoisting tasks, safety hazards, burrs on the rigging, scratching of goods or equipment during hoisting, and the rebound inertia fling force of the rigging when the trolley is pulled out, which may injure the on-site operators.

[0004] To achieve the above-mentioned purpose, the present application is realized by the following technical scheme: a non-stinging steel wire rope hoisting rigging, comprising a main rope, the two ends of the main rope are provided with end sections, an insertion and weaving section is arranged on the main rope close to the end section, the end section is bent back and inserted into the insertion and weaving section, and the part of the main rope between the end section and the insertion and weaving section is bent to form a loop section.

[0005] The end section comprises a plurality of strands.

[0006] The insertion and weaving section is reversely twisted along the spiral line direction to form a hollow part before insertion and weaving, and a clamping plate strip is inserted into the hollow part, when the end section is inserted into the insertion and weaving section, the plurality of strands are inserted into the clamping plate strip.

[0007] The tightening clamping plate strip comprises a plate body, opposite sides of the plate body are bent and staggered to form a first plate edge and a second plate edge, the first plate edge and the second plate edge and the plate body form a clamping cavity, the first plate edge and the second plate edge and the plate body form a bending part in transition, and the first plate edge and the second plate edge are provided with a through insertion hole; when the end section is inserted into the insertion section, a plurality of the staggered strands are arranged along a spiral line outside the plate body and inserted into the clamping cavity.

[0008] Preferably, the plate body is provided with a continuous bending part from top to bottom on the opposite side of the first plate edge and the second plate edge, the bending part is provided with a plurality of protruding parts for abutting the strands towards the inside of the clamping cavity, a content cavity for receiving the ends of a plurality of strands is formed between adjacent two protruding parts, and each protruding part is provided with an outer content cavity towards the back of the plate body.

[0009] Preferably, the distance between the protruding part and the first plate edge is greater than the diameter of the strand.

[0010] Preferably, the strand comprises a first strand, a second strand, a third strand, a fourth strand, a fifth strand and a sixth strand, the ends of the first strand to the sixth strand are sequentially increased, and an equal distance β is formed between adjacent two ends.

[0011] The ends of the first strand to the sixth strand are bent to form a turning part.

[0012] Preferably, the turning part comprises a first turning part twisted towards a first direction and a second turning part twisted towards a second direction, and the twisting directions of the first turning part and the second turning part are opposite.

[0013] Preferably, the portions of a plurality of strands inserted into the clamping cavity are staggered left and right in a top view projection.

[0014] Preferably, the loop section is provided with an auxiliary lasso close to the end section and the insertion section, the auxiliary lasso comprises a first winding section located in an inner ring and a second winding section located in an outer ring, and the first winding section and the second winding section are inserted into the loop section.

[0015] Preferably, the first winding section has two winding turns, and the second winding section has two winding turns.

[0016] Preferably, the auxiliary lasso is provided with a lasso end at both ends, and the lasso end is inserted into the loop section.

[0017] Preferably, the end section is inserted into the insertion section nine times.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. By using the barbless wire rope lifting sling provided by this invention, the strength of the spigot is significantly improved through three whole-strand insertions and six branch-strand insertions, ensuring the maximization of mechanical locking force and static friction between the spigot and the main rope. The whole-strand insertion provides strong support, while the branch-strand insertion fills the gaps, making the spigot more secure and able to withstand greater tensile force, thus significantly improving the load-bearing capacity of the sling.

[0020] 2. The staggered edges and bends form a semi-enclosed structure with elastic deformation space, guiding and storing the loose strands inside. When the rigging is under tension, the radial contraction force of the main rope will continuously compress and tighten the clamping strips, causing them to deform. Through the internal protrusions, each loose strand is clamped at multiple points in a three-dimensional manner, fundamentally eliminating the risk of "core pulling" and further enhancing the internal friction and mechanical interlocking force, effectively preventing the slippage of the connector. In addition, it avoids the burrs and protrusions in the traditional splicing method, reducing scratches to goods or equipment during hoisting and improving the safety performance of the rigging. Attached Figure Description

[0021] Figure 1 This is a front view of the wire rope hoisting sling of the present invention;

[0022] Figure 2 This is a diagram showing the state of the wire rope hoisting sling before splicing in this invention.

[0023] Figure 3 This is a diagram showing the state of the wire rope hoisting sling during the splicing process of the present invention;

[0024] Figure 4 This is a diagram showing the wire rope hoisting sling before and after splicing according to the present invention;

[0025] Figure 5 This is a schematic diagram of the state of each strand at the end segment of the present invention;

[0026] Figure 6 This is a schematic diagram showing the state of each strand of the end section of the present invention after being bent to form a rotating part;

[0027] Figure 7 This is a cross-sectional view of the rotating part of the present invention inserted into the clamping strip;

[0028] Figure 8 This is a cross-sectional view of the clamping strip of the present invention;

[0029] Figure 9 This is a schematic diagram showing the distribution of the rotating part of the present invention in the clamping strip;

[0030] Figure 10 This is a schematic diagram of the three-dimensional structure of the clamping strip of the present invention;

[0031] Figure 11 This is a schematic diagram showing the position of the auxiliary lasso inserted into the loop section of the present invention.

[0032] Explanation of reference numerals in the diagram: 1. Main rope; 2. Loop section; 3. End section; 31. Loose strand; 311. First loose strand; 312. Second loose strand; 313. Third loose strand; 314. Fourth loose strand; 315. Fifth loose strand; 316. Sixth loose strand; 32. Rotating section; 321. First rotating section; 322. Second rotating section; 4. Inserted braid section; 5. Hollowed-out section; 6. Tightening and clamping strip; 61. Board body; 62. First board edge; 63. Second board edge; 64. Protrusion; 65. Clamping cavity; 66. Outer cavity; 67. Inner cavity; 68. Insertion hole; 69. Bending section; 7. Auxiliary lasso; 71. Lasso end; 72. First winding section; 73. Second winding section. Detailed Implementation

[0033] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. The present invention discloses a barbless steel wire rope lifting sling, comprising a main rope with end sections at both ends. An insert section is provided on the main rope near the end sections, and the end sections include multiple loose strands. The insert section has a hollowed-out portion formed by a reverse twist in the spiral direction at the leading edge of the insert section, into which a clamping strip is inserted. The clamping strip includes a plate body, with its two sides bent relative to each other and overlapping to form a first plate edge and a second plate edge. The first and second plate edges, together with the plate body, form a clamping cavity. A bending portion is formed between the first and second plate edges and the plate body. Both the first and second plate edges have communicating insertion holes. When the end sections are inserted into the insert sections, the multiple loose strands are arranged in a spiral pattern along the outside of the plate body and inserted into the clamping cavity. The staggered edges and bends create a semi-enclosed structure with elastic deformation space, guiding and storing the loose strands within. When the rigging is under tension, the radial contraction force of the main rope continuously compresses and tightens the clamping strips, causing them to deform. The internal protrusions create multi-point, three-dimensional clamping of each loose strand, fundamentally eliminating the risk of "core pulling." Similarly, it avoids the burrs and protrusions found in traditional splicing methods, reducing scratches to goods or equipment during lifting and improving the safety performance of the rigging.

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation schemes as long as the effects of the present invention can be achieved.

[0035] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0036] like Figures 1 to 11 As shown in the embodiment of this application, a barbless wire rope hoisting sling is proposed, including a main rope 1, with end sections 3 at both ends of the main rope 1. An insert section 4 is provided on the main rope 1 near the end sections 3. The end sections 3 are bent back and inserted into the insert section 4, so that the part of the main rope 1 between the end sections 3 and the insert section 4 is bent to form a loop section 2.

[0037] It should be noted that in this embodiment, the end segment 3 is inserted nine times at the insertion segment 4; among the nine insertions, three are whole strand insertions, and six are insertions of the end segment 3 after it is split into strands; the insertion operation is carried out in a cross manner of "one strand up, one strand down" to ensure the firmness and durability of the connector.

[0038] For example, three whole strand insertions are performed by inserting the complete end segment 3 into the braided section 4 to enhance the strength of the joint; six strand insertions are performed by inserting the strands of the rope to make the joint smoother and rounder; this braiding method, compared with the existing five-times braiding method, can enhance the mechanical locking force and static friction between the main rope 1 and improve the overall load-bearing capacity.

[0039] like Figure 5 As shown, the end section 3 in this embodiment includes multiple loose strands 31; wherein, the braided section 4 is twisted in the opposite direction of the spiral line at the front edge of the braid to form a hollow part 5, and a clamping strip 6 is inserted into the hollow part 5. When the end section 3 is braided into the braided section 4, the multiple loose strands 31 are inserted into the clamping strip 6.

[0040] For example, during the insertion and braiding process, one end of the insertion and braiding section 4 close to the main rope 1 is clamped in a bench vise, and the other end of the insertion and braiding section 4 is clamped by a robotic arm and twisted 180° in the opposite direction along the spiral line, so that multiple loose strands 31 are loosely dispersed to form a hollow part 5. At this time, the clamping strip 6 is placed into the hollow part 5, and the end section 3 is inserted and braided onto the insertion and braiding section 4.

[0041] This embodiment discloses a method for inserting multiple loose strands 31 into an insertion segment 4, the method comprising the following steps:

[0042] Step 1: Securely clamp one end of the braided section 4 of the main rope 1 with a bench vise to ensure it will not move or rotate during subsequent operations; use a robotic arm or clamping tool to clamp the other end of the braided section 4; manually operate the robotic arm to twist the braided section 4 180° in the opposite direction of the spiral of the main rope 1; at this time, the gaps between the strands of the braided section 4 are forcibly opened, and the originally tightly fitted strands become loose, thereby forming one or more through, linear hollow parts 5 between the strands; insert the pre-prepared tightening clamping strips 6 into the formed hollow parts 5;

[0043] Step 2: Bend the end section 3 back so that its loop section 2 is close to the main rope 1; use a triangular awl to pry open the rope strands of the braided section 4, and pass the entire end section 3 through the gap between the rope strands; do this in a "one strand up, one strand down" crisscrossing manner, ensuring that it passes through a different gap between the rope strands each time to form a strong mechanical lock;

[0044] Step 3: Completely separate the loose strands 31 of the end section 3; take one of the loose strands 31, use the braiding awl to precisely pick up one strand of the braided section 4, and pass this loose strand 31 through from below, in a "one strand up, one strand down" cross pattern, inserting each loose strand 31 independently according to the predetermined order and path; the separate insertion can fill the gaps left by the whole insertion, making the shape of the joint smoother and rounder, and reducing stress concentration; the interaction between the loose strands 31 and the tightening clamping strips 6 enhances the internal friction and mechanical interlocking force;

[0045] Step 4: After each insertion, insert the end of the rope strand into the tightening clamp strip 6 to form a whole rigging, which increases its toughness, tensile strength and service life.

[0046] In one embodiment, specifically as follows: Figure 7 As shown, the clamping strip 6 includes a plate body 61. The two sides of the plate body 61 are bent relative to each other and overlap to form a first plate edge 62 and a second plate edge 63. The first plate edge 62 and the second plate edge 63 and the plate body 61 enclose a clamping cavity 65. The first plate edge 62 and the second plate edge 63 are bent and transitioned with the plate body 61 to form a bent portion 69. The first plate edge 62 and the second plate edge 63 are both provided with communicating insertion holes 68. When the end section 3 is inserted into the insertion section 4, multiple loose strands 31 are arranged in a spiral pattern and wrapped around the outside of the plate body 61 and inserted into the clamping cavity 65.

[0047] For example, the clamping strip 6 is formed by bending both sides of a plate 61 inward with a bending machine, and making the two sides overlap to form a semi-circular cylinder, and forming insertion holes 68 on the first plate edge 62 and the second plate edge 63 after bending; during insertion, the loose strands 31 are inserted into the end part of the insertion section 4 and enter into the clamping cavity 65 along the insertion hole 68, and the end is collected and hidden to prevent the end from opening outward and forming burrs, thus avoiding pricking hands and scratching steel or components.

[0048] Furthermore, the plate 61 has a continuous curved section on the opposite side of the first plate edge 62 and the second plate edge 63 from top to bottom. The curved section has a plurality of protrusions 64 for abutting the loose strands 31 in the direction of the inner side of the clamping cavity 65. A cavity 67 for receiving the ends of the loose strands 31 is formed between two adjacent protrusions 64. Each protrusion 64 has an outer cavity 66 in the direction of the back side of the plate 61.

[0049] During implementation, the loose strands 31 are woven into the end portion of the inserted section 4, which is wrapped around the outer cavity 66 of the outer wall of the plate body 61 and then enters the clamping cavity 65. After entering the clamping cavity 65, the end portion contacts the protrusion 64. When the rigging is stretched during use, the main rope 1 and the inserted section 4 are stretched and squeezed by the internal tightening clamping strips 6. At this time, the plate body 61 is squeezed and deformed. The first plate edge 62 and the second plate edge 63 are staggered at the bending part 69, cooperating with the plate body 61 to squeeze the multiple loose strands 31 inside. As the tensile force increases during use, the tightening clamping strips 6 continue to deform, continuously squeezing the multiple loose strands 31, enhancing the biting force between the end section 3 and the inserted section 4.

[0050] Furthermore, specifically as follows: Figure 9 As shown, the portion of the multiple strands 31 inserted into the clamping cavity 65 is arranged alternately from left to right in the top view projection; after the multiple strands 31 are inserted into the clamping cavity 65, each protrusion 64 can contact two of the multiple strands 31, so that each strand 31 can be squeezed at two points by the protrusion 64, thereby enhancing the squeezing and clamping effect on the strands 31.

[0051] It should be noted that the distance between the protrusion 64 and the first plate edge 62 is greater than or equal to the diameter of the loose strand 31, so that the loose strand 31 can be inserted into the clamping cavity 65.

[0052] In one embodiment, specifically as follows: Figure 5As shown, the loose strands 31 include a first loose strand 311, a second loose strand 312, a third loose strand 313, a fourth loose strand 314, a fifth loose strand 315, and a sixth loose strand 316. The ends of the first loose strand 311 to the sixth loose strand 316 increase sequentially, so that there is an equal distance β between two adjacent ends. With this arrangement, the tail portion of each loose strand 31 can be evenly distributed on the insertion section 4 during insertion, and can be smoothly inserted into the insertion hole 68 from top to bottom, and prevent the ends of the loose strands 31 from being too concentrated on the insertion section 4, which would cause the joint to thicken.

[0053] In a preferred embodiment, specifically as follows: Figure 6 As shown, the ends of the first strand 311 to the sixth strand 316 are bent to form a rotating portion 32; further, the rotating portion 32 includes a first rotating portion 321 twisted in a first direction and a second rotating portion 322 twisted in a second direction, the twisting directions of the first rotating portion 321 and the second rotating portion 322 being opposite.

[0054] During implementation, the first rotating part 321, which is twisted in the first direction, and the second rotating part 322, which is twisted in the second direction, are wrapped in an alternating manner around the clamping strip 6, so that the ends of the first loose strand 311 to the sixth loose strand 316 can be inserted into the socket 68.

[0055] Specifically, such as Figure 4 and Figure 11 As shown, in one embodiment, in order to enhance the strength of the loop segment 2, an auxiliary lasso 7 is provided near the end segment 3 and the braided segment 4 of the loop segment 2; the auxiliary lasso 7 includes a first winding segment 72 located in the inner circle and a second winding segment 73 located in the outer circle, and the first winding segment 72 and the second winding segment 73 are inserted into the loop segment 2.

[0056] Furthermore, the first winding section 72 has two winding turns, and the second winding section 73 has two winding turns; the auxiliary lasso 7 has lasso ends 71 ​​at both ends, and the lasso ends 71 ​​are inserted into the loop section 2.

[0057] For example, such as Figure 11As shown, one configuration of the auxiliary lasso 7 is as follows: one end of the auxiliary lasso 7 is first inserted into the interior of the loop section 2 near the end section 3, and the other end is wound around the loose strands a and b of the loop section 2 near the end section 3 and the loose strands D and E of the loop section 2 near the braided section 4 to form a first winding section 72. Then, it is wound around the loose strands c and f of the loop section 2 near the end section 3 and the loose strands C and F of the loop section 2 near the braided section 4 to form a second winding section 73. Then, this end is inserted into the interior of the loop section 2 near the braided section 4, so that the part of the loop section 2 near the end section 3 and the braided section 4 is tightened by the auxiliary lasso 7, reducing the impact of the rigging on the braided section 4 during use. In the harsh working environment of dock hoisting and the long distance, when the rigging is worn out, the auxiliary lasso 7 will first detach or partially detach from the loop section 2, which can detect the wear and tear of the rigging earlier.

[0058] The basic principles, main features, and advantages of the present invention have been described above. However, the above description is only a specific embodiment of the present invention, and the technical features of the present invention are not limited thereto. Any other embodiments derived by those skilled in the art without departing from the technical solution of the present invention should be covered within the patent scope of the present invention.

[0059] In the description of this invention, each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. As the apparatus disclosed in the embodiments corresponds to the methods disclosed in the embodiments, the description is relatively simple, and relevant parts can be referred to the method section.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A barbless steel wire rope lifting sling, characterized in that: Includes a main rope (1), with end sections (3) at both ends of the main rope (1), and a braided section (4) on the main rope (1) close to the end sections (3). The end sections (3) are bent back and braided into the braided section (4), so that the part of the main rope (1) between the end sections (3) and the braided section (4) is bent to form a loop section (2). The end section (3) includes multiple strands (31); Among them, the insertion section (4) is twisted in the opposite direction of the spiral line at the insertion front to form a hollow part (5), and a clamping strip (6) is inserted into the hollow part (5). When the end section (3) is inserted into the insertion section (4), multiple strands (31) are inserted into the clamping strip (6). The clamping strip (6) includes a plate body (61). The two sides of the plate body (61) are bent relative to each other and overlapped to form a first plate edge (62) and a second plate edge (63). The first plate edge (62) and the second plate edge (63) and the plate body (61) enclose a clamping cavity (65). The first plate edge (62) and the second plate edge (63) and the plate body (61) are bent to form a bent portion (69). The first plate edge (62) and the second plate edge (63) are both provided with interconnected insertion holes (68). When the end section (3) is inserted into the insertion section (4), multiple strands (31) are arranged and wound along the spiral line on the outside of the plate body (61) and inserted into the clamping cavity (65).

2. The barbless wire rope lifting sling according to claim 1, characterized in that: The plate (61) has a continuous curved section on the side opposite to the first plate edge (62) and the second plate edge (63) from top to bottom. The curved section has a plurality of protrusions (64) for abutting the loose strands (31) in the direction towards the inside of the clamping cavity (65). A cavity (67) for receiving the ends of the loose strands (31) is formed between two adjacent protrusions (64). Each protrusion (64) has an outer cavity (66) in the direction of the back side of the plate (61).

3. The barbless wire rope lifting sling according to claim 2, characterized in that: The distance between the protrusion (64) and the first plate edge (62) is greater than or equal to the diameter of the strand (31).

4. The barbless wire rope lifting sling according to claim 1, characterized in that: The loose strand (31) includes a first loose strand (311), a second loose strand (312), a third loose strand (313), a fourth loose strand (314), a fifth loose strand (315), and a sixth loose strand (316). The ends of the first loose strand (311) to the sixth loose strand (316) grow sequentially, so that an equidistant distance β is formed between two adjacent ends. The ends of the first strand (311) to the sixth strand (316) are bent to form a rotating part (32).

5. The barbless wire rope lifting sling according to claim 4, characterized in that: The rotating part (32) includes a first rotating part (321) twisted in a first direction and a second rotating part (322) twisted in a second direction, wherein the twisting directions of the first rotating part (321) and the second rotating part (322) are opposite.

6. The barbless wire rope lifting sling according to claim 1, characterized in that: The portions of the multiple strands (31) inserted into the clamping cavity (65) are staggered left and right in the top view projection.

7. The barbless wire rope lifting sling according to claim 1, characterized in that: An auxiliary loop (7) is provided near the end section (3) and the insertion section (4) of the ring section (2). The auxiliary loop (7) includes a first winding section (72) located in the inner circle and a second winding section (73) located in the outer circle. The first winding section (72) and the second winding section (73) are inserted into the ring section (2).

8. The barbless wire rope lifting sling according to claim 7, characterized in that: The first winding segment (72) has two windings, and the second winding segment (73) has two windings.

9. A barbless wire rope lifting sling according to claim 7, characterized in that: The auxiliary lasso (7) has lasso ends (71) at both ends, and the lasso ends (71) are inserted into the loop section (2).

10. The barbless wire rope lifting sling according to claim 1, characterized in that: The end segment (3) is interlaced nine times at the insertion segment (4).

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