Double-hook interlocking device and working method of double-hook interlocking device

Abstract

The invention provides a double-hook interlocking device and an operation method of the double-hook interlocking device, and relates to the technical field of safety. The double-hook interlocking device comprises a connecting piece, a linkage mechanism and two locking mechanisms, and the connecting piece is connected with the two locking mechanisms; the lock mechanism comprises a lock body and a spring bolt, the spring bolt is movably connected with the lock body, so that the spring bolt has a first position and a second position which are mutually switched, and the spring bolt is clamped into the lock body when the spring bolt is located at the first position; at the second position, the spring bolt leaves the lock body. The linkage mechanism is matched with the two spring bolts at the same time so that it can be guaranteed that at least one of the two spring bolts is matched with the corresponding lock body to form a closed locking cavity in the using process. The device realizes an active protection effect, so that when a worker works aloft, at least one of the two lock mechanisms can be ensured to be in a locking state with the tower pole, the condition that the worker loses protection of the lock mechanisms due to misoperation is not easy to occur, the safety of the worker working aloft is improved, and the accident rate is reduced.

Description

Technical Field

[0001] The present invention relates to the field of safety technology, in particular to a double-hook interlocking device and an operating method of the double-hook interlocking device. Background Art

[0002] At present, the products of safety belt aerial work devices on the market mainly use safety belt hooks, which specifically include a hook body, a locking rod and a pulling rod. The hook body has an opening, the locking rod is rotatably installed in the opening of the hook body for locking, and the pulling rod is rotatably installed on the hook body; the locking rod is located on one side of the pulling rod, and during the rotation of the pulling rod, the end of the locking rod acts on the locking rod to drive the locking rod to rotate to open the opening of the hook body. For details, please refer to patent CN 117731975 A. In addition, the existing patent CN 111888686 A also discloses a double-hook safety belt, which specifically includes a portable controller, a safety belt fabric, two smart hooks, and a D-ring. The portable controller is arranged on the safety belt fabric, the D-ring is arranged at the rear of the safety belt braid, and the two smart hooks are connected to the D-ring through a safety rope; wherein, the portable controller is used to detect the current working height. When the current working height is higher than the preset working height information, the smart hook issues a locking command; wherein, the smart hook starts the locking actuator when receiving the locking command, and the two smart hooks continue to perform unhooking detection. If it is detected that both smart hooks are unhooked, an unhooking alarm is issued to the portable controller, so that the portable controller issues an unhooking alarm.

[0003] The inventor has found that the safety locks in the prior art have at least the following disadvantages: 1. No interlocking function: The existing double-hook safety belt does not have an interlocking function. Both hooks can be opened when in use. When the user loses protection, he or she faces the risk of falling from a height, resulting in casualties.

[0004] 2. Lack of protection mechanism and unreliability: Traditional seat belts on the market currently have no protection mechanism and rely entirely on the user's safety awareness for control; a small number of smart seat belts only have a reminder alarm function or use electronic control technology to lock the double hooks, but they cannot solve the problem of interlocking protection mechanism failure due to battery failure, signal interference causing communication abnormalities affecting interlocking control, and interlocking failure. Summary of the invention

[0005] The object of the present invention is to provide a double-hook interlocking device and a double-hook interlocking device operation method, which can improve safety.

[0006] The embodiment of the present invention is achieved as follows: In a first aspect, the present invention provides a double hook interlocking device, comprising: A connecting piece, a linkage mechanism and two lock mechanisms, wherein the connecting piece is connected to the two lock mechanisms at the same time; each of the lock mechanisms comprises a lock body and a lock tongue, wherein the lock tongue is movably connected to the lock body so that the lock tongue has a first position and a second position that can be switched to each other, wherein when in the first position, the lock tongue is inserted into the lock body and the two cooperate to define a closed lock cavity; and when in the second position, the lock tongue leaves the lock body and the lock cavity is opened; The linkage mechanism cooperates with the two locking tongues at the same time to ensure that at least one of the two locking tongues cooperates with the corresponding lock body to form a closed locking cavity during use.

[0007] In an optional embodiment, the linkage mechanism includes a first linkage unit and a second linkage unit, the first linkage unit cooperates with the two lock tongues at the same time, and the first linkage unit is used to limit the second lock tongue of the two lock tongues from switching from the first position to the second position when the first lock tongue of the two lock tongues is in the second position; the second linkage unit cooperates with the two lock tongues at the same time, and the second linkage unit is used to limit the first lock tongue from switching from the first position to the second position when the second lock tongue is in the second position.

[0008] In an optional embodiment, the first linkage unit includes a first force transmission member and a first limit block, one end of the first force transmission member is connected to the first lock tongue, the other end of the first force transmission member is connected to the first limit block, the first limit block is movably connected to the second lock body corresponding to the second lock tongue, and the first limit block is used to move relative to the second lock body under the drive of the first force transmission member when the first lock tongue moves relative to the first lock body connected thereto; when the first lock tongue is in the first position, the first limit block allows the second lock tongue to switch from the first position to the second position; when the first lock tongue is in the second position, the first limit block restricts the second lock tongue from switching from the first position to the second position.

[0009] In an optional embodiment, the second linkage unit includes a second force transmission member and a second limit block, one end of the second force transmission member is connected to the second lock tongue, the other end of the second force transmission member is connected to the second limit block, the second limit block is movably connected to the first lock body corresponding to the first lock tongue, and the second limit block is used to move relative to the second lock body driven by the second force transmission member when the second lock tongue moves relative to the second lock body connected thereto; when the second lock tongue is in the first position, the second limit block allows the second lock tongue to switch from the first position to the second position; when the second lock tongue is in the second position, the second limit block restricts the first lock tongue from switching from the first position to the second position.

[0010] In an optional embodiment, the first force transmission member and the second force transmission member are both inserted into the connecting member.

[0011] In an optional embodiment, the connecting member is provided with a first channel and a second channel which are independent of each other, the first force transmitting member is inserted into the first channel and slidably cooperates with the first channel, and the outer peripheral surface of the first force transmitting member contacts the inner wall surface of the first channel; the second force transmitting member is inserted into the second channel and slidably cooperates with the second channel, and the outer peripheral surface of the second force transmitting member contacts the inner wall surface of the second channel.

[0012] In an optional embodiment, the first lock tongue is rotatably matched with the first lock body via a first rotating shaft, the first force transmission member is rotatably matched with the first lock tongue and is eccentrically arranged with the first rotating shaft, and the first limit block is slidably matched with the second lock body; The second lock tongue is rotatably matched with the second lock body via a second rotating shaft, the second force transmission member is rotatably matched with the second lock tongue and is eccentrically arranged with the second rotating shaft, and the second limit block is slidably matched with the first lock body; The first limit block is used to abut against the second lock tongue when the first lock tongue is in the second position to limit the second lock tongue from rotating from the first position to the second position; the second limit block is used to abut against the first lock tongue when the second lock tongue is in the second position to limit the first lock tongue from rotating from the first position to the second position.

[0013] In an optional embodiment, the lock mechanism further includes an elastic member, which is mounted on the lock body and contacts the lock tongue so that the lock tongue has a rotation tendency to switch from the second position to the first position.

[0014] In an optional embodiment, the lock mechanism also includes a closing constraint component, which is installed on the lock body, and the closing constraint component is used to detect whether the lock tongue meets the set conditions for switching from the second position to the first position, and when the lock tongue meets the set conditions, the closing constraint component allows the lock tongue to switch from the second position to the first position.

[0015] In a second aspect, the present invention provides a double-hook interlocking device operation method, which is applicable to the double-hook interlocking device described in any one of the aforementioned embodiments, and the operation method comprises: When both locking mechanisms are connected to the tower rod and the locking cavity is in a closed state, any one of the two locking mechanisms is in an unlocked state; When any one of the two locking mechanisms is in an unlocked state separated from the tower, the other of the two locking mechanisms is in a locked state that cannot be switched to an unlocked state.

[0016] The beneficial effects of the embodiments of the present invention are: In summary, the double-hook interlocking device provided in this embodiment can ensure that when any one of the two lock mechanisms is in an unlocked state, the other lock mechanism cannot be switched from a closed state to an unlocked state through the cooperation of the linkage mechanism and the two lock mechanisms. In this way, when working at high altitude, the two lock mechanisms are not both in an unlocked state, which can ensure that at least one of the lock mechanisms of the safety device worn by the operator is in a state of connection with the tower pole, greatly improving the safety of the operator working in high-altitude scenes and reducing the probability of accidents. At the same time, when both lock mechanisms are normally hung on the tower pole, at this time, both lock mechanisms are in an unlocked state, and any one of the two lock mechanisms can be opened and unlocked, so as to be removed from the tower pole, which is easy to operate. When one of the lock mechanisms is in an unlocked state, the other lock mechanism cannot be switched from a locked state to an unlocked state. The double-hook interlocking is achieved through a mechanical structure, which improves reliability and reduces the accident rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a double-hook interlocking device according to an embodiment of the present invention; Figure 2 Schematic diagram of a closing constraint component according to an embodiment of the present invention.

[0019] icon: 100-connecting member; 200-first linkage unit; 210-first force transmission member; 220-first limiting block; 300-second linkage unit; 310-second force transmission member; 320-second limiting block; 400-first locking mechanism; 410-first lock body; 411-first locking groove; 420-first locking tongue; 421-first locking port; 430-first rotating shaft; 440-first elastic member; 450-first manual locking member; 500-second locking mechanism; 510-second lock body; 511-second locking groove; 520-second locking tongue; 521-second locking port; 530-second rotating shaft; 540-second elastic member; 550-second manual locking member; 600-closing constraint assembly; 610-installing shaft; 620-constraint rod; 630-limiting strip; 640-magnetic body; 650-constraint elastic body. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the prior art, when working at high altitude, workers need to wear a safety rope, which is equipped with two hooks, and the two hooks are alternately connected to the tower pole to enable workers to climb the tower. In the process of alternately connecting the hooks to the tower pole, when both hooks are not locked with the tower pole, the workers are not protected by the safety rope, and the safety is low. However, the existing safety rope device cannot actively avoid the situation where both hooks are separated from the tower pole, so there are certain safety hazards.

[0027] The present embodiment provides a double-hook interlocking device, which realizes active protection through structural improvement, so that when workers are working at heights, it can ensure that at least one of the two locking mechanisms is in a locked state with the tower pole, and it is not easy for misoperation to cause the workers to lose the protection of the locking mechanism, thereby improving the safety of workers' high-altitude operations and reducing the accident rate.

[0028] Please combine Figure 1 In this embodiment, the double-hook interlocking device includes a connecting member 100, a linkage mechanism and two locking mechanisms. The connecting member 100 is connected to the two locking mechanisms at the same time; each locking mechanism includes a lock body and a lock tongue, and the lock tongue is movably connected to the lock body so that the lock tongue has a first position and a second position that can be switched to each other. When in the first position, the lock tongue is inserted into the lock body and the two cooperate to define a closed locking cavity; when in the second position, the lock tongue leaves the lock body and the locking cavity is opened.

[0029] The linkage mechanism cooperates with the two lock tongues at the same time to ensure that at least one of the two lock tongues cooperates with the corresponding lock body to form a closed locking cavity during use.

[0030] Based on the above, the working mode of the double hook interlocking device provided in this embodiment is as follows: The double hook interlocking device is connected to the safety rope, for example, the safety rope can be connected to the connector 100. When in use, in the initial state, one of the lock mechanisms is in an unlocked state and the other lock mechanism is in a locked state. During the climbing process, the lock mechanism in the unlocked state is first connected to the tower pole by a lock tongue and the lock tongue moves relative to the lock body, and a closed locking cavity is formed by the lock tongue and the lock body, so as to realize the locking of the lock mechanism with the tower pole. At this time, both lock mechanisms are in a closed state, and the other lock mechanism in a closed state that is not matched with the tower pole can be opened, and when the lock mechanism that is not matched with the tower pole is opened, the lock mechanism that is matched with the tower pole cannot be opened under the restriction of the linkage mechanism, so as to ensure that there is always a lock mechanism for the safety rope locked with the tower pole, which plays a protective role. When the staff hooks the lock mechanism that is not matched with the tower pole on a tower pole in a better position and puts the lock mechanism in a locked state, the staff can unlock the lock mechanism on the tower pole located at a lower position, and then lock it to a higher tower pole, and the two lock mechanisms are alternately connected to the tower pole to realize the climbing operation of the staff. And during the whole climbing process, there is always a locking mechanism locked with the tower pole, which has high safety and low accident rate.

[0031] The details of the double-hook interlocking device provided in the embodiment of the present application are described below by way of examples.

[0032] Please combine Figure 1It should be understood that the structures of the two lock mechanisms can be set to be the same, and for the convenience of description, the two lock mechanisms are respectively a first lock mechanism 400 and a second lock mechanism 500, the first lock mechanism 400 includes a first lock body 410 and a first lock tongue 420 that are movably connected, and correspondingly, the second lock mechanism 500 includes a second lock body 510 and a second lock tongue 520 that are movably connected. In order to avoid repeated description, in this embodiment, the detailed structure of the first lock mechanism 400 is taken as an example for detailed description. The first lock mechanism 400 includes a first lock body 410, a first lock tongue 420 and a first elastic member 440. The first lock body 410 is provided with a first lock groove 411, and the first lock tongue 420 is provided with a first lock opening 421. The first lock tongue 420 is rotatably matched with the first lock body 410 through a first rotating shaft 430, so that the first lock tongue 420 has a first position and a second position that are switched to each other. When in the first position, the first lock opening 421 is rotated into the first lock groove 411, and the open side of the first lock opening 421 is closed by the groove wall of the first lock body 410, forming a closed locking cavity. For example, the first lock mechanism 400 is described in cooperation with the tower rod. First, the first lock opening 421 is inserted into the tower rod, and then force is applied to the first lock body 410. In the process of the tower rod being inserted into the first lock groove 411, the first lock tongue 420 is driven to rotate until the tower rod enters the first lock groove 411 and the open side of the first lock opening 421 is closed by the first lock body 410, thereby achieving locking. Correspondingly, the second lock body 510 is provided with a second lock groove 511, the second lock tongue 520 is provided with a second lock opening 521, the second lock tongue 520 is rotatably matched with the second lock body 510 through the second rotating shaft 530, and the second elastic member 540 can make the second lock tongue 520 always have a tendency to remain in the first position.

[0033] In this embodiment, optionally, the linkage mechanism includes a first linkage unit 200 and a second linkage unit 300, the first linkage unit 200 cooperates with the first lock tongue 420 and the second lock tongue 520 at the same time, and the first linkage unit 200 is used to limit the second lock tongue 520 from switching from the first position to the second position when the first lock tongue 420 is in the second position. Similarly, the second linkage unit 300 cooperates with the first lock tongue 420 and the second lock tongue 520 at the same time, and the second linkage unit 300 is used to limit the first lock tongue 420 from switching from the first position to the second position when the second lock tongue 520 is in the second position. By setting two linkage units to cooperate with two locking mechanisms at the same time, each locking mechanism can be independently controlled and can affect the working state of another locking mechanism, thereby realizing active mechanical interlocking.

[0034] In this embodiment, optionally, the first linkage unit 200 includes a first force transmission member 210 and a first limit block 220, one end of the first force transmission member 210 is connected to the first lock tongue 420, the first force transmission member 210 and the first lock tongue 420 can be rotationally matched, and the rotation position of the first force transmission member 210 is eccentrically arranged with the first rotating shaft 430. The other end of the first force transmission member 210 is connected to the first limit block 220, the first limit block 220 is movably connected to the second lock body 510 corresponding to the second lock tongue 520, and the first limit block 220 is used to move relative to the second lock body 510 under the drive of the first force transmission member 210 when the first lock tongue 420 moves relative to the first lock body 410 connected thereto. When the first lock tongue 420 is in the first position, the first limit block 220 allows the second lock tongue 520 to switch from the first position to the second position; when the first lock tongue 420 is in the second position, the first limit block 220 restricts the second lock tongue 520 from switching from the first position to the second position.

[0035] Similarly, optionally, the second linkage unit 300 includes a second force transmission member 310 and a second limit block 320, one end of the second force transmission member 310 is connected to the second lock tongue 520, the second force transmission member 310 and the second lock tongue 520 can be rotationally matched, and the rotation position of the second force transmission member 310 is eccentrically arranged with the second rotating shaft 530. The other end of the second force transmission member 310 is connected to the second limit block 320, the second limit block 320 is movably connected to the first lock body 410 corresponding to the first lock tongue 420, and the second limit block 320 is used to move relative to the second lock body 510 driven by the second force transmission member 310 when the second lock tongue 520 moves relative to the second lock body 510 connected thereto; when the second lock tongue 520 is in the first position, the second limit block 320 allows the second lock tongue 520 to switch from the first position to the second position; when the second lock tongue 520 is in the second position, the second limit block 320 restricts the first lock tongue 420 from switching from the first position to the second position.

[0036] It should be noted that the first force transmission member 210 and the second force transmission member 310 can both be set as metal strips or braided strips, which can transmit thrust and tension without producing elastic deformation, and also have a certain bending ability, can adapt to the bending adjustment of the connecting member 100, and will not interfere with the connecting member 100.

[0037] Furthermore, the connecting member 100 may be configured as a cable, and the first force transmitting member 210 and the second force transmitting member 310 are both inserted into the connecting member 100 .

[0038] Optionally, the connecting member 100 is provided with a first channel and a second channel which are independent of each other, the first force transmission member 210 is arranged in the first channel and slidably cooperates with the first channel, and the outer peripheral surface of the first force transmission member 210 contacts the inner wall surface of the first channel; the second force transmission member 310 is arranged in the second channel and slidably cooperates with the second channel, and the outer peripheral surface of the second force transmission member 310 contacts the inner wall surface of the second channel. The first force transmission member 210 is limited by the first channel and can slide in the first channel, and due to the limitation of the inner wall of the first channel, the force transmission efficiency of the first force transmission member 210 is high, that is, the first force transmission member 210 can effectively convert the rotation of the first lock tongue 420 into the movement of the first limit block 220 relative to the second lock body 510, so that the positions of the first limit block 220 and the second lock body 510 change, which is conducive to controlling the action of the second lock body 510. For example, when the first lock mechanism 400 is in the locked state and the second lock mechanism 500 is in the unlocked state, at this time, the first limit block 220 abuts against one side of the second lock tongue 520, and the second lock tongue 520 is blocked by the first limit block 220 from rotating and opening, and the second lock tongue 520 cannot be rotated and opened. Only when the first lock tongue 420 is connected to the tower pole and is in the locked state, at this time, the first lock tongue 420 rotates from the second position to the first position, the first lock tongue 420 drives the first limit block 220 to move and leave the position of contacting the second lock tongue 520 through the first force transmission member 210, and the second lock tongue 520 can rotate out of the second lock groove 511 to achieve unlocking. Correspondingly, when the second locking mechanism 500 is in an unlocked state, the second limit block 320 is in a position abutting against the first lock tongue 420, and the first lock tongue 420 cannot be rotated from the first position to the second position. When the second locking mechanism 500 is in a locked state, the second limit block 320 leaves the position abutting against the first lock tongue 420 under the action of the second force transmission member 310, and the first lock tongue 420 can be rotated to open.

[0039] It should be noted that each lock mechanism also includes an elastic member, which is mounted on the lock body and contacts the lock tongue, so that the lock tongue has a rotation tendency to switch from the second position to the first position. In this way, when both lock tongues are in the closed state, each lock tongue always has a position to remain in the locked state under the action of the corresponding elastic member, and is not easy to automatically rotate and open, which has high security.

[0040] It should be understood that the elastic member may be a spring sheet or the like.

[0041] In other embodiments, optionally, the first lock mechanism 400 further includes a first manual locking member 450 connected to the first lock body 410, and the second lock mechanism 500 further includes a second manual locking member 550 connected to the second lock body 510. The first manual locking member 450 can limit the position of the second limit block 320, and the second manual locking member 550 can limit the position of the first limit block 220, thus playing a double insurance role. When the positions of the first lock tongue 420 and the second lock tongue 520 need to be adjusted, force can be applied to the first manual locking member 450 and the second manual locking member 550, so that the two lose their limiting effect on the corresponding limit blocks, and then the position of the lock tongue can be adjusted.

[0042] In this embodiment, optionally, each lock mechanism further includes a closing constraint assembly 600, which is installed on the lock body. The closing constraint assembly 600 is used to detect whether the lock tongue meets the set condition for switching from the second position to the first position, and when the lock tongue meets the set condition, the closing constraint assembly 600 allows the lock tongue to switch from the second position to the first position. With such a design, the closing constraint assembly 600 can be driven by the tower rod when the lock tongue of the lock mechanism cooperates with the tower rod, and the lock tongue can be rotated from the second position to the first position, thereby avoiding the staff from misoperating or deliberately not cooperating the lock tongue with the tower rod, and manually adjusting the lock tongue from the second position to the first position, resulting in a false lock, that is, although the lock tongue is in the first position, it does not cooperate with the tower rod and does not play a protective role. In other words, the setting condition for the closing constraint assembly 600 to allow the lock tongue to switch from the second position to the first position is that the tower rod cooperates with the lock tongue and the tower rod drives the lock tongue to move.

[0043] Please combine Figure 2For example, in this embodiment, the closing constraint assembly 600 may include a mounting shaft 610, a constraint rod 620, a limit strip 630, a magnetic body 640 and a constraint elastic body 650. The mounting shaft 610 is mounted at a notch of the lock body forming a lock slot, and the constraint rod 620 is rotatably mounted on the mounting shaft 610. The limit strip 630 is slidably matched with the lock body in a direction perpendicular to the mounting shaft 610, and the magnetic body 640 is mounted on the limit strip 630. One end of the constraint elastic body 650 is connected to the lock body, and the other end is connected to the limit strip 630. The constraint elastic member is used to make the limit strip 630 have a tendency to slide along the first direction. Under normal conditions, the constraint elastic body 650 is in a compressed state, has a tendency to push the limit strip 630 to move along the first direction, and makes the limit strip 630 clamped between the lock body and the first end of the constraint rod 620. At this time, the second end of the constraint rod 620 extends into the lock slot. When the tower bar is not matched with the lock body and the lock tongue is to be switched to the first position, at this time, the lock tongue is only rotated toward the lock body, the lock tongue contacts the second end of the constraint rod 620, and the lock tongue drives the second end to rotate inward, but due to the limiting effect of the limit bar 630, the lock tongue cannot rotate into the lock slot, so it is not easy to cause misoperation, etc. When the tower bar is clamped in the lock tongue and rotates into the lock slot together with the lock tongue, the tower bar is a metal rod, which interacts with the magnetic body 640, so that the limit bar 630 slides relative to the lock body in a second direction opposite to the first direction, and the limit bar 630 loses its limiting effect on the constraint rod 620, and the lock tongue can drive the constraint rod 620 to rotate and enter the lock slot, realizing the locking match between the tower bar and the lock mechanism. At the same time, the second end of the constraint rod 620 extends into the lock slot when the lock tongue has not entered the lock slot, and the second end cooperates with the lock body or the limit strip 630, and the rotation direction is restricted by the lock body and the limit strip 630. It can only rotate counterclockwise to enter the lock slot, and will not rotate clockwise to leave the lock slot, thus achieving good protection effect.

[0044] The double-hook interlocking device provided in this embodiment adopts a purely mechanical design to realize the double-hook interlocking function. When one locking mechanism is successfully hooked to the safety crossbar or tower, the other locking mechanism must also be hooked to the safety crossbar, and one of the locking mechanisms can be unlocked and opened; if the other locking mechanism is not hooked to the crossbar, the locking mechanism cannot be unlocked and opened. That is, it is ensured that at least one locking mechanism is hooked to the crossbar. This mechanism prevents users from losing the protection of the locking mechanism, and the safety of workers working at heights is high.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double hook interlocking device, characterized in that: include: A connecting piece (100), a linkage mechanism and two lock mechanisms, wherein the connecting piece (100) is connected to the two lock mechanisms at the same time; each lock mechanism comprises a lock body and a lock tongue, wherein the lock tongue is movably connected to the lock body so that the lock tongue has a first position and a second position that can be switched to each other, wherein when in the first position, the lock tongue is engaged with the lock body and the two cooperate to define a closed lock cavity; and when in the second position, the lock tongue leaves the lock body and the lock cavity is opened; The linkage mechanism cooperates with the two locking tongues at the same time to ensure that at least one of the two locking tongues cooperates with the corresponding lock body to form a closed locking cavity during use.

2. The double hook interlocking device according to claim 1, characterized in that: The linkage mechanism comprises a first linkage unit (200) and a second linkage unit (300); the first linkage unit (200) cooperates with two lock tongues at the same time, and the first linkage unit (200) is used to restrict the second lock tongue (520) of the two lock tongues from switching from the first position to the second position when the first lock tongue (420) of the two lock tongues is in the second position; and the second linkage unit (300) cooperates with the two lock tongues at the same time, and the second linkage unit (300) is used to restrict the first lock tongue (420) from switching from the first position to the second position when the second lock tongue (520) is in the second position.

3. The double hook interlocking device according to claim 2, characterized in that: The first linkage unit (200) comprises a first force transmission member (210) and a first limit block (220); one end of the first force transmission member (210) is connected to the first lock tongue (420); the other end of the first force transmission member (210) is connected to the first limit block (220); the first limit block (220) is movably connected to a second lock body (510) corresponding to the second lock tongue (520); the first limit block (220) is used to move relative to the second lock body (510) driven by the first force transmission member (210) when the first lock tongue (420) moves relative to the first lock body (410) connected thereto; when the first lock tongue (420) is in the first position, the first limit block (220) allows the second lock tongue (520) to switch from the first position to the second position; when the first lock tongue (420) is in the second position, the first limit block (220) restricts the second lock tongue (520) from switching from the first position to the second position.

4. The double hook interlocking device according to claim 3, characterized in that: The second linkage unit (300) comprises a second force transmission member (310) and a second limit block (320); one end of the second force transmission member (310) is connected to the second lock tongue (520); the other end of the second force transmission member (310) is connected to the second limit block (320); the second limit block (320) is movably connected to a first lock body (410) corresponding to the first lock tongue (420); the second limit block (320) is used to move relative to the second lock body (510) driven by the second force transmission member (310) when the second lock tongue (520) moves relative to the second lock body (510) connected thereto; when the second lock tongue (520) is in the first position, the second limit block (320) allows the second lock tongue (520) to switch from the first position to the second position; when the second lock tongue (520) is in the second position, the second limit block (320) restricts the first lock tongue (420) from switching from the first position to the second position.

5. The double hook interlocking device according to claim 4, characterized in that: The first force transmission member (210) and the second force transmission member (310) are both disposed through the connecting member (100).

6. The double hook interlocking device according to claim 5, characterized in that: The connecting member (100) is provided with a first channel and a second channel which are independent of each other; the first force transmission member (210) is inserted into the first channel and slidably cooperates with the first channel, and the outer peripheral surface of the first force transmission member (210) contacts the inner wall surface of the first channel; the second force transmission member (310) is inserted into the second channel and slidably cooperates with the second channel, and the outer peripheral surface of the second force transmission member (310) contacts the inner wall surface of the second channel.

7. The double hook interlocking device according to claim 4, characterized in that: The first lock tongue (420) is rotatably matched with the first lock body (410) via a first rotating shaft (430); the first force transmission member (210) is rotatably matched with the first lock tongue (420) and is eccentrically arranged with the first rotating shaft (430); and the first limit block (220) is slidably matched with the second lock body (510); The second lock tongue (520) is rotatably matched with the second lock body (510) via a second rotating shaft (530); the second force transmission member (310) is rotatably matched with the second lock tongue (520) and is eccentrically arranged with the second rotating shaft (530); and the second limit block (320) is slidably matched with the first lock body (410); The first limiting block (220) is used to abut against the second locking tongue (520) when the first locking tongue (420) is in the second position, so as to limit the second locking tongue (520) from rotating from the first position to the second position; the second limiting block (320) is used to abut against the first locking tongue (420) when the second locking tongue (520) is in the second position, so as to limit the first locking tongue (420) from rotating from the first position to the second position.

8. The double hook interlocking device according to claim 7, characterized in that: The lock mechanism further comprises an elastic member, which is mounted on the lock body and contacts the lock tongue so that the lock tongue has a rotation tendency to switch from the second position to the first position.

9. The double hook interlocking device according to any one of claims 1 to 8, characterized in that: The lock mechanism further comprises a closing constraint component (600), wherein the closing constraint component (600) is mounted on the lock body, and the closing constraint component (600) is used to detect whether the lock tongue meets a set condition for switching from the second position to the first position, and when the lock tongue meets the set condition, the closing constraint component (600) allows the lock tongue to switch from the second position to the first position.

10. A method for operating a double hook interlocking device, characterized in that: The double hook interlocking device according to any one of claims 1 to 9, wherein the operation method comprises: When both locking mechanisms are connected to the tower rod and the locking cavity is in a closed state, any one of the two locking mechanisms is in an unlocked state; When any one of the two locking mechanisms is in an unlocked state separated from the tower, the other of the two locking mechanisms is in a locked state that cannot be switched to an unlocked state.

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