Flexible connector with adjustable length

Abstract

The length-adjustable flexible connector provided by the present invention includes a flexible part, a first mooring hook and a second mooring hook respectively located at both ends of the flexible part. One of the first mooring hook and the second mooring hook is connected to a heavy object or goods to be transported, and the other is connected to a hoisting machine or a transportation vehicle. The flexible part includes a first part and a second part that are hinged to each other. The adjustment scale of the length adjustment of the first part is greater than that of the second part, and through the cooperation of the two, the technical effects of both rapid adjustment and precise adjustment are achieved. The structure of the first mooring hook is simple and its self-weight is light, which reduces the overall weight of the flexible connector. Moreover, by rotating or bending the rotating part, the position of the limiting ring can be locked to form a closed loop of the mooring hook, which has the advantages of simple and fast operation.

Description

Technical Field

[0001] The present invention relates to the technical field of devices for fastening cables or ropes to other objects, and particularly to a flexible connecting member with adjustable length. Background Art

[0002] During the hoisting, disassembling and assembling process of heavy objects, or during the transportation of goods, connecting cables or chains are usually used to connect and fix the heavy objects to be hoisted or the goods to be transported.

[0003] In order to quickly and easily install and disassemble the connecting cables or chains, it is usually required that the connection between the connecting cables or chains and the heavy objects to be hoisted or the goods to be transported, as well as the cranes or transportation tools, is fast and reliable, and the connecting cables or chains have the function of adjustable length.

[0004] The connecting cables or chains in the prior art are complex in structure and have a relatively large weight proportion.

[0005] Therefore, how to provide a more lightweight and more convenient-to-operate mooring rigging is an urgent technical problem to be solved. Summary of the Invention

[0006] The present invention provides a flexible connecting member with adjustable length, which is lightweight, more convenient to operate, meets the urgent needs of reliable and convenient connection, and has a relatively small weight proportion.

[0007] The present invention provides the following solutions:

[0008] A flexible connecting member with adjustable length, comprising a flexible part and a first mooring hook and a second mooring hook respectively located at both ends of the flexible part, wherein,

[0009] The flexible part comprises a first part and a second part which are hinged:

[0010] The first part comprises a round-link chain and a buckle, and by adjusting the position of the buckle on the round-link chain, the length of the load-bearing section of the round-link chain is changed;

[0011] The second part comprises a screw sleeve, a left screw rod and a right screw rod, and the left screw rod and the right screw rod are respectively connected to both ends of the screw sleeve by threads;

[0012] The first mooring hook comprises: a hook-shaped body, a collar connected to the hook tip of the hook-shaped body, a limit ring that sleeved the collar and the hook handle ring of the hook-shaped body, and a rotating member that restricts the position of the limit ring, and by changing the attitude of the rotating member relative to the hook handle, a contour part thereof exceeds the cross-section of the hook handle.

[0013] Preferably, a hook-shaped part and a ring part are provided on the second mooring hook, and the size of the ring part allows the hook-shaped part to pass through.

[0014] Preferably, a second connection hole connected to the flexible part is further provided on the second mooring hook;

[0015] The axis of the second connection hole is parallel to the axis of the ring part.

[0016] Preferably, the limiting ring is sleeved and connected with the collar.

[0017] Preferably, the buckle is provided with:

[0018] A first groove, the width of the notch of which is equal to the width of the ring wall of the round link chain;

[0019] A second groove, one second groove is provided on each of the two opposite groove walls of the first groove, and the distance between the bottoms of the two second grooves is equal to the profile width of the round link chain.

[0020] Preferably, the left screw rod is hollow, and one end of the inner wall of the left screw rod forms a sliding fit with the guide rod; except for the end that forms a sliding fit with the guide rod, there is a gap between the inner wall of the left screw rod and the guide rod;

[0021] The right screw rod is hollow, and one end of the inner wall of the right screw rod forms a sliding fit with the guide rod; except for the end that forms a sliding fit with the guide rod, there is a gap between the inner wall of the right screw rod and the guide rod.

[0022] Preferably, a hole is provided at the center of the rotating part, and two centrally symmetric protruding parts are arranged around the hole at the center on the rotating part;

[0023] The limiting ring sleevedly holds the collar and the shank of the hook-shaped body, the protruding part of the rotating part extends beyond the cross-section of the shank, and the first mooring hook is in a closed-loop state;

[0024] The protruding part is covered by the cross-section of the shank, and the first mooring hook is in a released state.

[0025] Preferably, in the closed-loop state and the released state of the first mooring hook, the rotation angle of the protruding part around the hole of the rotating part is 90 degrees.

[0026] Preferably, two through grooves with an included angle of 180 degrees in the circumferential direction and a non-through groove with an included angle of 90 degrees with the through groove in the circumferential direction are provided on the hole wall of the hole at the center of the rotating part;

[0027] A stepped first hollow cylindrical protrusion is provided on the bottom surface of the shank of the first mooring hook, and a column is provided in the middle of the first hollow cylindrical protrusion:

[0028] The first mooring hook further includes:

[0029] The lower cover is provided with a hole in the middle, and the hole wall extends to one side to form a second hollow cylindrical protrusion. Four second grooves are evenly distributed along the circumferential direction on the end face of the second hollow cylindrical protrusion;

[0030] The button is in the shape of a hollow cylinder with a closed top. A limit protrusion is provided on the top surface of the inner cavity of the button; a middle lug is provided in the middle section of the outer wall surface of the button, and a bottom lug is provided at the bottom end of the outer wall surface of the button; the included angle between the middle lug and the bottom lug is 90 degrees in the circumferential direction;

[0031] The spring is sleeved on the upright post on the bottom surface of the hook handle. One end of the spring is fixed on the top surface of the inner cavity of the button, and the other end is fixed on the bottom surface of the first hollow cylindrical protrusion;

[0032] The inner diameters of the first hollow cylindrical protrusion, the second hollow cylindrical protrusion and the button are equal;

[0033] Wherein, the rotating part is arranged between the lower cover and the hook handle, and the lower cover is fixedly connected with the hook handle; the top end of the button passes through the lower cover from the end with the second hollow cylindrical protrusion.

[0034] Preferably, the two opposite vertical surfaces of the rotating part are planes, and the other two opposite vertical surfaces are each composed of two arc surfaces, wherein the outer peripheral surface of the protruding part has a larger radius of the arc surface;

[0035] On the side of the lower cover provided with the second hollow cylindrical protrusion, two opposite limit vertical walls are further provided, and an open channel is between the two limit vertical walls; the limit vertical walls include two arc surfaces, and the diameters of the two arc surfaces at both ends are not equal, and the two arc surfaces with equal diameters of the two limit vertical walls are centrosymmetric with respect to the axis center of the second hollow cylindrical protrusion.

[0036] According to the specific embodiments provided by the present invention, the following technical effects of the present invention are disclosed:

[0037] Through a specific embodiment of the present invention, the length-adjustable flexible connecting piece includes a flexible part and a first mooring hook and a second mooring hook respectively located at both ends of the flexible part. One of the first mooring hook and the second mooring hook is connected to a heavy object or a goods to be transported, and the other is connected to a hoisting machine or a transport vehicle.

[0038] Furthermore, the flexible part includes a first part and a second part which are hinged: the first part includes a circular chain and a buckle, and by adjusting the position of the buckle on the circular chain, the length of the load-bearing section of the circular chain is changed; the second part includes a screw sleeve, a left screw rod and a right screw rod, and the left screw rod and the right screw rod are respectively connected to both ends of the screw sleeve by threads; adjusting the position of the buckle on the circular chain in the first part realizes the length adjustment of the flexible connector, and adjusting the length of the threaded connection between the left screw rod and the right screw rod and the screw sleeve in the second part realizes the length adjustment of the flexible connector. And because the adjustment scale of the length adjustment of the first part is larger than that of the second part, the technical effect of both quick adjustment and precise adjustment is achieved through the cooperation of the two.

[0039] Furthermore, the first mooring hook includes: a hook-shaped body, a collar connected to the hook tip of the hook-shaped body, a limit ring that sleeves the collar and the hook handle ring of the hook-shaped body, and a rotating member that restricts the position of the limit ring, and changing the attitude of the rotating member relative to the hook handle so that a contour part thereof exceeds the cross-section of the hook handle. The hook-shaped body and the collar form a closed loop through the limit ring, and the rotating member rotates or bends so that a contour part thereof exceeds the cross-section of the hook handle to fix the position of the limit ring. The structures of the collar and the rotating member are simple and have a light self-weight, reducing the overall weight of the flexible connector, and the position of the limit ring can be locked by simply rotating or bending the rotating member, and the operation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 is a schematic structural diagram of a length-adjustable flexible connector provided in Embodiment 1 of the present invention;

[0042] Figure 2 is a schematic structural diagram of the first part when there is a circular chain in the buckle in Embodiment 1 of the present invention;

[0043] Figure 3 is a schematic structural diagram of the first part when there is no circular chain in the buckle in Embodiment 1 of the present invention;

[0044] Figure 4 is a schematic structural diagram of the circular chain provided in Embodiment 1 of the present invention;

[0045] Figure 5 is a schematic structural diagram of the second part provided in Embodiment 1 of the present invention;

[0046] Figure 6 is a schematic structural view of the first mooring hook provided in Embodiment 1 of the present invention;

[0047] Figure 7 is an exploded view of the structure of the first mooring hook provided in Embodiment 1 of the present invention;

[0048] Figure 8 is a schematic structural view of the rotating member of the first mooring hook provided in Embodiment 1 of the present invention;

[0049] Figure 9 is a schematic structural view of the hook-shaped body of the first mooring hook provided in Embodiment 1 of the present invention;

[0050] Figure 10 is a schematic structural view of the lower cover of the first mooring hook provided in Embodiment 1 of the present invention;

[0051] Figure 11 is a schematic structural view of the button of the first mooring hook provided in Embodiment 1 of the present invention;

[0052] Figure 12 is a schematic structural view of the second mooring hook provided in Embodiment 2 of the present invention;

[0053] Figure 13 is a schematic view of the use state of the second mooring hook provided in Embodiment 2 of the present invention. Detailed Embodiments

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0055] Embodiment 1

[0056] This embodiment provides a length-adjustable flexible connector, which can be used in the process of hoisting, disassembling and assembling heavy objects or transporting goods. Using the length-adjustable flexible connector to connect and fix the heavy objects to be hoisted or the goods to be transported can quickly and simply install and disassemble the connecting cables or chains. The length-adjustable flexible connector provided in this embodiment is quickly and firmly connected to the heavy objects to be hoisted or the goods to be transported and the crane or transportation tool, and the length can be adjusted according to the distance between the heavy objects or the goods to be transported and the crane or transportation tool.

[0057] Refer to Figure 1, comprising a flexible part and a first mooring hook 1 and a second mooring hook 7 respectively located at both ends of the flexible part. The first mooring hook 1 is connected to a heavy object or the goods to be transported, and the second mooring hook 7 is connected to a hoisting machine or a transportation vehicle; or the first mooring hook 1 is connected to a hoisting machine or a transportation vehicle, and the second mooring hook 7 is connected to a heavy object or the goods to be transported.

[0058] In the flexible part of this embodiment, it comprises a first part 6 and a second part 2 which are hinged. Specifically:

[0059] The first part 6 comprises a circular chain 4 and a buckle 3. By adjusting the position of the buckle 3 on the circular chain 4, the length of the load-bearing section of the circular chain 4 is changed. The length of the load-bearing section of the circular chain 4 is the length between the buckle 3 and the second mooring hook 7. In Figure 1 , the length of the load-bearing section of the circular chain 4 is the length of the circular chain 4 on the right side of the buckle 3.

[0060] Combined with Figure 5 , in this embodiment, the second part 2 comprises a screw sleeve 23, a left screw rod 21 and a right screw rod 26. The left screw rod 21 and the right screw rod 26 are respectively threadedly connected to both ends of the screw sleeve 21. When the screw sleeve 23 is rotated, the left screw rod 21 and the right screw rod 26 simultaneously extend or retract from the screw sleeve 23, changing the length of the second part 2.

[0061] Combined with Figure 6 , the first mooring hook 1 comprises: a hook-shaped body 11, a collar 13 connected to the tip of the hook-shaped body 11, a limit ring 15 that sleeves the collar 13 and the hook handle ring of the hook-shaped body 11, and a rotating member that restricts the position of the limit ring 14. By changing the attitude of the rotating member relative to the hook handle of the hook-shaped body 11, a contour part of the rotating member extends beyond the cross-section of the hook handle of the hook-shaped body 11.

[0062] Among them, changing the attitude of the rotating member relative to the hook handle of the hook-shaped body 11 so that a contour part of the rotating member extends beyond the cross-section of the hook handle of the hook-shaped body 11 includes: 1) the rotating member rotates around an axis in the vertical direction so that the contour of the rotating member rotates out within the range of the cross-section of the hook handle of the hook-shaped body 11; or 2) the rotating member is rotatably connected to the hook handle of the hook-shaped body 11, the axis of rotation is parallel to the cross-section of the hook handle of the hook-shaped body 11, and after the rotating member bends around the axis from the vertical turntable, the contour of the rotating member extends beyond the range of the cross-section of the hook handle of the hook-shaped body 11.

[0063] The first mooring hook 1 is connected to a connecting rod 8 through a pin shaft. The end of the connecting rod 8 that is not connected to the first mooring hook 1 is provided with a thread for connecting to the left screw rod 21 of the second part 2; the right screw rod 26 of the second part 2 is rotatably connected to the first part 6, and one end of the circular chain 4 of the first part 6 that is not connected to the right screw rod 26 is rotatably connected to the second mooring hook 7.

[0064] Through the specific implementation manner of a flexible connector with adjustable length provided by this embodiment, the connection between heavy objects or goods to be transported and lifting machinery or transportation tools is realized.

[0065] Regarding the so-called "length adjustable", the flexible part includes a first part 6 and a second part 2 which are hinged: in the first part 6, the position of the adjusting buckle 3 on the circular ring chain 4 is adjusted to realize the length adjustment of the flexible connector; in the second part 2, the lengths of the left screw rod 21 and the right screw rod 26 threaded with the screw sleeve 23 are adjusted to realize the length adjustment of the flexible connector. And because the adjustment scale of the length adjustment of the first part 6 is greater than that of the second part 2, the technical effect of both rapid adjustment and precise adjustment is achieved through the cooperation of the two.

[0066] In the implementation manner of the first mooring hook 1 provided in this embodiment, by rotating or bending the rotating part so that a contour part thereof exceeds the cross-section of the hook handle, the position of the limiting ring 14 is fixed. The structure of the collar 13 and the rotating part is simple and the self-weight is light, reducing the overall weight of the flexible connector. The rotating part can lock the position of the limiting ring 14 by rotating or bending, and the operation is simple and fast.

[0067] When in use, first connect the first mooring hook 1 with the mooring ring on the heavy object or the goods to be transported; then connect the first mooring hook 7 with the lifting machinery or transportation tool; adjust the length of the first part 6 according to the distance between the heavy object or the goods to be transported and the lifting machinery or transportation tool; finally, manually adjust the second part 2 to make the circular ring chain 4 taut.

[0068] In a preferred implementation manner, the limiting ring 14 and the collar 13 are sleeved and connected, that is, the two are sleeved with each other like a circular ring chain. When used in this implementation manner, the limiting ring 14 can be sleeved on the hook handle of the hook-shaped body 11, which is convenient for operation. At the same time, since the limiting ring 14 and the collar 13 are sleeved, when not in use, the limiting ring 14 and the collar 13 are connected together, not easy to be lost, and beneficial to storage. Preferably, the collar 13 is connected to the hook-shaped body 11 through the intermediate ring 12. Refer to Figure 6 , the axis of the perforation on the hook tip of the first mooring hook 1 is perpendicular to the paper surface, the central axis of the limiting ring 14 is vertical, and by means of the intermediate ring 12 with a horizontal central axis, a ring wall of the collar 13 is just in the plane where the hook handle of the first mooring hook 1 is parallel to the paper surface, which is convenient for the limiting ring to fix the collar 13 and the hook handle, making the fixation of the two more reliable.

[0069] This embodiment gives a specific implementation manner of the first part 6. Figure 1 Combined with Figures 2 to 4 , the following are provided on the buckle 3:

[0070] A first groove 301, the width m of the groove opening is equal to the width a of the ring wall of the circular ring chain 4;

[0071] Second groove 302, one second groove 302 is provided on each of the two opposite groove walls of the first groove 301, and the distance between the bottoms of the two second grooves 302 is equal to the profile width b of the endless chain 4.

[0072] In this embodiment, when it is necessary to change the length of the load-bearing section of the endless chain 4, rotate the head end link 41 upward. The head end link 41 is currently stuck in the first groove 301, and the head end link 41 is one link at the head end of the tail end link 42 currently stuck in the second groove 302. Pull the endless chain 4 toward the tail end or the head end. After selecting the length, two adjacent links on the endless chain 4 are respectively stuck in the first groove 301 and the second groove 302, realizing the rapid adjustment and rapid release of the length of the load-bearing section of the cable chain 4.

[0073] Furthermore, in the solution provided in the embodiment of the present application, the cable chain 4 can adopt various chains commonly used in the market, and only the sizes and shapes of the first groove 301 and the second groove 302 in the buckle 3 need to be changed.

[0074] This embodiment gives a specific implementation manner of the second part 2 in the flexible part. Continue to refer to Figure 5 The left screw rod 21 is hollow. One end of the inner wall of the left screw rod 21 forms a sliding fit with the guide rod 25 to perform a guiding function; except for the end that forms a sliding fit with the guide rod 25, there is a gap between the inner wall of the left screw rod 21 and the guide rod 25.

[0075] The right screw rod 26 is hollow. One end of the inner wall of the right screw rod 26 forms a sliding fit with the guide rod 25; except for the end that forms a sliding fit with the guide rod 25, there is a gap between the inner wall of the right screw rod 26 and the guide rod 25.

[0076] Furthermore, a fastening screw 24 is provided to fix the guide rod 25 and the screw sleeve 23. Limit screws 22 are provided at both ends of the screw sleeve 23. The step surface or chamfer surface between the end that forms a sliding fit with the guide rod 25 and the end with a gap on the inner wall of the left screw rod 21 (or the right screw rod 26) will be stuck on the limit screws 22 to prevent the left screw rod 21 (or the right screw rod 26) from detaching from the screw sleeve 23, playing a limiting role.

[0077] This embodiment gives a specific implementation manner of a first mooring hook. Refer to Figures 7 to 11 And in combination with Figure 6 , in this embodiment, by rotating the rotating part so that its contour part extends beyond the cross-section of the hook handle, specifically:

[0078] A hole is provided at the center of the rotating part 152, and two centrally symmetric protruding parts 1523 are provided on the rotating part 152 around the central hole;

[0079] The limiting ring 14 sleeves the collar 13 and the shank of the hook-shaped body 11, the protruding part 1523 of the rotating member 152 extends beyond the cross-section of the shank, and the first mooring hook 1 is in a closed-loop state;

[0080] The protruding part 1523 is covered by the cross-section of the shank, and the first mooring hook 1 is in a released state.

[0081] In the closed-loop state and the released state of the first mooring hook 1, the rotation angle of the protruding part 1523 around the hole of the rotating member 152 is 90 degrees.

[0082] Furthermore, this embodiment provides a specific implementation method for realizing the transformation of the first mooring hook 1 between the closed-loop state and the released state and locking in the two states:

[0083] On the hole wall of the hole at the center of the rotating member 152, there are two through grooves 1521 with an included angle of 180 degrees in the circumferential direction and a non-through groove 1522 with an included angle of 90 degrees in the circumferential direction with respect to the through grooves;

[0084] On the bottom surface of the shank of the first mooring hook 1, there is a first hollow cylindrical protrusion 111, and a column 113 is provided in the middle of the first hollow cylindrical protrusion 111:

[0085] The first mooring hook 1 further includes:

[0086] The lower cover 153 has a hole in the middle and the hole wall extends to one side to form a second hollow cylindrical protrusion 1533. Four second grooves 1532 are evenly distributed on the end surface of the second hollow cylindrical protrusion 1533 in the circumferential direction;

[0087] The button 154 is in the shape of a hollow cylinder with a closed top. A middle lug 1542 is provided in the middle section of the outer wall surface of the button 154, and a bottom lug 1543 is provided at the bottom end of the outer wall surface of the button 154; the included angle between the middle lug 1542 and the bottom lug 1543 in the circumferential direction is 90 degrees;

[0088] The spring 155 is sleeved on the column 113 on the bottom surface of the shank. One end of the spring 155 is fixed on the top surface of the inner cavity of the button 154, and the other end is fixed on the bottom surface of the first hollow cylindrical protrusion 111; it is feasible that: the first hollow cylindrical protrusion 111 is in a stepped shape, and the stepped surface 112 can block one end of the spring 155; a limit protrusion 1541 is provided on the top surface of the inner cavity of the button 154, and the limit protrusion 1541 can block the other end of the spring 155;

[0089] The inner diameters of the first hollow cylindrical protrusion 111, the second hollow cylindrical protrusion 1533, and the button 154 are equal;

[0090] Among them, the rotating member 152 is arranged between the lower cover 153 and the hook handle, and the lower cover 153 and the hook handle are fixedly connected by bolts 151; the top end of the button 154 passes through the lower cover 153 from one end with the second hollow cylindrical protrusion 1533.

[0091] Under the above-mentioned structure and connection method, the conversion of the first mooring hook 1 between the closed-loop state and the release state and the specific processes of locking in the two states are as follows:

[0092] In the unlocked state, the outer contour of the rotating member 152 is covered within the cross-section of the hook handle. The second groove 1532 of the lower cover 153 is aligned with the two through grooves 1521 of the rotating member 152. The two middle lugs 1542 of the button 154 are respectively stuck in the aligned second groove 1532 and through groove 1521. The bottom lug 1543 of the button 154 is stuck in the non-through groove 1522 of the rotating member 152. At this time, since the lower cover 153 is fixed relative to the hook-shaped body 11, the rotating member 152 cannot rotate. When the button 154 is pressed, the two middle lugs 1542 are stuck in the two through grooves 1521 of the rotating member 152, and the bottom lug 1543 disengages from the non-through groove 1522 of the rotating member 152. Since the two ends of the spring 155 are respectively stuck in the step surface 112 of the first hollow cylindrical protrusion 111 and the limit protrusion 1541 arranged on the top surface of the inner cavity of the button 154, under the torsional restoring force of the spring 155, the button 154 rotates, driving the rotating member 152 to rotate. After rotating 90°, limited by the outer shapes of the rotating member 152 and the lower cover 153, the rotation stops. At this time, the rotating member 152 and the lower cover 153 are in a "cross" state, the through groove 1521 is aligned with the other two second grooves 1532 of the lower cover 153 that are 180 degrees apart. Under the axial thrust of the spring 155, the two middle lugs 1542 can be stuck in the aligned through groove 1521 and second groove 1532, and the bottom lug 1543 can be stuck in the non-through groove 1522, realizing self-locking in the closed-loop state, that is, only by pressing the button 154 and manually rotating the rotating member 152 can the unlocking in the closed-loop state be achieved.

[0093] When unlocking is required, press the button 154, the middle lug 1542 is separated from the second groove 1532, manually push the rotating member 152 to rotate 90° to overcome the torsion of the spring 155 to make the rotating member 152 parallel to the lower cover 153. After rotating 90°, limited by the outer shapes of the rotating member 152 and the lower cover 153, the rotation stops. At this time, under the axial thrust of the spring 155, the button 154 is stuck in the aligned through groove 1521 and second groove 1532 again to achieve unlocking.

[0094] Further, in this embodiment, by only changing the rotation direction when the spring 155 is installed, the usage mode of the rotating member 152 can be changed: when the rotating member 152 is in the closed-loop state, after pressing the button 154, the rotating member 152 automatically rotates under the torsional restoring force of the spring 155 until it is covered within the contour of the lower cover 153 and locked, and then it turns to the release state; when the rotating member 152 is in the release state, after pressing the button 154, manually rotate the rotating member 152 to overcome the torsion of the spring 155, and lock it in a "cross" state with the lower cover 153, so that the rotating member is in the closed-loop state.

[0095] In this embodiment, when using the first mooring hook 1, ensure that the rotating member 152 is in the unlocked state, insert the first hook body 11 of the first mooring hook 1 into the mooring ring on the cargo, and bring the first hook body 11 of the first mooring hook 1 close to the collar 13, then slip the limit ring 14 onto the first hook body 11 of the first mooring hook 1, and press the button 154 to pop out the rotating member 152.

[0096] When it is necessary to quickly remove the first mooring hook 1, press the button 154 and push the rotating member 152 to retract and lock it in the lower cover 153, then take off the limit ring 14, and the first mooring hook 1 is released.

[0097] The preferred embodiment is: referring to Figure 8 , two opposite vertical surfaces of the rotating member 152 are flat surfaces, and the other two opposite vertical surfaces are each composed of two arc surfaces, and the outer peripheral surface of the protruding portion 1523 has a larger radius of the arc surface;

[0098] On the side of the lower cover provided with the second hollow cylindrical protrusion, there are also two opposite limiting vertical walls 1534, and an open channel is between the two limiting vertical walls 1534; the limiting vertical wall 1534 includes two arc surfaces, and the diameters of the two arc surfaces at both ends are not equal, and the two arc surfaces with equal diameters of the two limiting vertical walls 1534 are centrosymmetric with respect to the axis center of the second hollow cylindrical protrusion 1533.

[0099] The rotation position of the rotating member 152 is limited by the above shapes to make its rotation stop.

[0100] Embodiment 2

[0101] This embodiment provides an implementation manner of the second mooring hook 7 relative to Embodiment 1:

[0102] Referring to Figure 12 , a hook-shaped portion 71 and a ring portion 72 are provided on the second mooring hook 7, and the size of the ring portion 72 allows the hook-shaped portion 71 to pass through.

[0103] The second mooring hook 7 is rotatably connected to one end of a connecting rod 8, and the other end of the connecting rod 8 is rotatably connected to the circular chain 4.

[0104] Referring toFigure 13 The second mooring hook 7 provided in this embodiment can be connected to a mooring hook on a cargo or a heavy object or a mooring hook 100 on a transport vehicle or a sling by setting a ring portion 72. At the same time, a hook-shaped portion 112 is provided, and the hook-shaped portion 71 can be connected to the ring portion 72 on another second mooring hook 7, so that the purpose of attaching multiple flexible connectors can be achieved.

[0105] For some tall or high-center-of-gravity cargoes, the mooring hook is located at a higher position. Usually, the number of high-position mooring hooks is small, so two or more mooring slings are allowed to be attached to one mooring hook. The second mooring hook 7 provided in this embodiment can carry the mooring load alone, or it can be connected with another flexible connector to carry the mooring load together.

[0106] Preferably, the second mooring hook 7 is also provided with a second connecting hole 73 connected to the flexible part; in this embodiment, the second connecting hole 73 is used to connect to one end of the connecting rod 8, and the connecting rod 8 is a part of the flexible part, wherein the axis of the second connecting hole 73 is parallel to the axis of the ring part 72, and both are perpendicular to the direction of the paper surface. This arrangement allows the flexible connector to rotate around an axis inside its body, so that the flexible connector can absorb a part of the shaking caused by the bump.

[0107] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A flexible connector with adjustable length, comprising a flexible part, a first mooring hook and a second mooring hook respectively located at two ends of the flexible part, characterized in that the flexible part includes a first part and a second part which are hinged to each other: the first part includes a circular chain and a buckle, and by adjusting the position of the buckle on the circular chain, the length of the load-bearing section of the circular chain is changed; the second part includes a sleeve, a left screw rod and a right screw rod, and the left screw rod and the right screw rod are respectively connected to two ends of the sleeve by threads; the first mooring hook includes: a hook-shaped body, a collar connected to the hook tip of the hook-shaped body, a limiting ring that sleeved the collar and the hook handle ring of the hook-shaped body, and a rotating member that restricts the position of the limiting ring, and changing the attitude of the rotating member relative to the hook handle so that a contour part thereof exceeds the cross-section of the hook handle; a hole is provided at the center of the rotating member, and two centrally symmetric protruding parts are arranged around the hole at the center on the rotating member; the limiting ring sleeved the collar and the hook handle of the hook-shaped body, and the protruding part of the rotating member exceeds the cross-section of the hook handle, and the first mooring hook is in a closed-loop state; the protruding part is covered by the cross-section of the hook handle, and the first mooring hook is in a released state; two through grooves with an included angle of 180 degrees in the circumferential direction and a non-through groove with an included angle of 90 degrees in the circumferential direction with respect to the through groove are provided on the hole wall of the hole at the center of the rotating member; a stepped first hollow cylindrical protrusion is provided on the bottom surface of the hook handle of the first mooring hook, and a column is provided in the middle of the first hollow cylindrical protrusion; the first mooring hook further includes: a lower cover, with a hole in the middle and the hole wall extending to one side to form a second hollow cylindrical protrusion, and four second grooves are evenly distributed along the circumferential direction on the end surface of the second hollow cylindrical protrusion; a button, which is in the shape of a hollow cylinder with a closed top, and a limiting protrusion is provided on the top surface of the inner cavity of the button; a middle lug is provided in the middle section of the outer wall surface of the button, and a bottom lug is provided at the bottom end of the outer wall surface of the button; the middle lug and the bottom lug have an included angle of 90 degrees in the circumferential direction; a spring, sleeved on the column on the bottom surface of the hook handle, with one end fixed on the top surface of the inner cavity of the button and the other end fixed on the bottom surface of the first hollow cylindrical protrusion; the inner diameters of the first hollow cylindrical protrusion, the second hollow cylindrical protrusion and the button are equal; wherein, the rotating member is arranged between the lower cover and the hook handle, and the lower cover is fixedly connected to the hook handle; the top end of the button passes through the lower cover from the end with the second hollow cylindrical protrusion.

2. The flexible connecting member according to claim 1, wherein a hook-shaped part and a ring part are provided on the second mooring hook, and the size of the ring part allows the hook-shaped part to pass through.

3. The flexible connecting member according to claim 2, wherein, a second connecting hole connected to the flexible part is further provided on the second mooring hook; the axis of the second connecting hole is parallel to the axis of the ring part.

4. The flexible connector according to claim 1, wherein the limiting ring is sleeved and connected with the collar.

5. The flexible connector according to any one of claims 1 to 4, characterized in that, the following are provided on the buckle: a first groove, the width of the groove opening is equal to the width of the ring wall of the circular chain; a second groove, and one second groove is provided on each of the two opposite groove walls of the first groove, and the distance between the bottoms of the two second grooves is equal to the profile width of the circular chain.

6. The flexible connector according to any one of claims 1 to 4, characterized in that, The left screw rod is hollow, and one end of the inner wall of the left screw rod forms a sliding fit with the guide rod; there is a gap between the inner wall of the left screw rod and the guide rod except for the end that forms a sliding fit with the guide rod. The right screw rod is hollow, and one end of the inner wall of the right screw rod forms a sliding fit with the guide rod; there is a gap between the inner wall of the right screw rod and the guide rod except for the end that forms a sliding fit with the guide rod.

7. The flexible connecting member according to claim 1, characterized in that In the closed-loop state and the release state of the first mooring hook, the rotation angle of the protruding portion around the hole of the rotating member is 90 degrees.

8. The flexible connecting member according to claim 1, wherein, Two opposite vertical surfaces of the rotating member are flat, and the other two opposite vertical surfaces are each composed of two arc surfaces, and the radius of the arc surface of the outer peripheral surface of the protruding portion is larger. On the side of the lower cover provided with the second hollow cylindrical protrusion, there are also two opposite limiting vertical walls, and an open channel is between the two limiting vertical walls; the limiting vertical walls include two arc surfaces with unequal diameters at both ends, and the two arc surfaces with equal diameters of the two limiting vertical walls are centrosymmetric with respect to the axis center of the second hollow cylindrical protrusion.

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