A bird hook and chain conveyor component for a warehousing system

Abstract

A bird hook and chain transmission component for a warehousing system, belonging to the field of automated logistics technology. The bird hook includes a hook base and a hook body; one end of the hook base is rotatably connected to one end of the hook body; a spring is also connected between the hook body and the hook base; the other end of the hook body is provided with a hook groove; the hook groove is used to hook the carrier and drive the carrier to move along the track; the other end of the hook base is provided with an installation part connected to the transmission chain; the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis of the connection shaft of the installation part connected to the transmission chain far from the connection part of the hook body and the hook base are in the same vertical direction; or, the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis of the connection shaft of the installation part connected to the transmission chain close to the connection part of the hook body and the hook base are in the same vertical direction. The chain transmission component includes the above-mentioned bird hook, transmission chain and track. The present invention solves the problem that the turning of the bird hook is not synchronized with the turning of the carrier at the turning of the chain.

Description

Technical Field

[0001] The present invention belongs to the technical field of automated logistics, and particularly relates to a bird hook and a chain transmission component for a warehousing system. Background Art

[0002] In a warehousing track system, in order to store goods into the track, a carrier for driving the goods needs to move from the start end to the end of the warehousing track. After moving to the end, the goods need to stop moving, so as to achieve the warehousing function. To achieve the above purpose, a bird hook is often used to drive the goods. Existing bird hook components are usually driven by a transmission chain, and the carrier is driven to move along the track through a hook groove provided on the bird hook. The transmission chain is usually arranged in a closed loop, so that the bird hook can be used cyclically. However, the existing bird hook design is not reasonable. At the turning point of the transmission chain, the turning of the bird hook is not synchronized with the turning of the carrier, resulting in the bird hook and the carrier being disengaged at the turning point.

[0003] The utility model patent CN201821133140.6 discloses a chain drive component for a hanging system, and specifically discloses that the component includes a chain drive mechanism and a track for transporting a carrier. The chain drive mechanism includes a decoupling component for dragging the carrier along the track; a clothing blocking mechanism is further provided on the track. The decoupling component includes a decoupling biased towards the track direction. A resisting portion and a hook groove cooperating with the carrier are provided on the side of the decoupling close to the track; when the hook groove of the decoupling hooks the carrier and drags it along the track, the resisting portion of the decoupling can cooperate with the clothing blocking mechanism or an adjacent carrier in front of the dragging direction of the track to release the carrier hooked by the hook groove onto the track. A chain link is integrally formed at the top end of the decoupling seat of the decoupling component, and the decoupling component is connected to the chain through the link at its top end. Combining with the attached drawings, it can be seen that the top end of the decoupling seat integrally formed with the link is close to the connection part between the decoupling seat and the decoupling, and the hook groove is located on the decoupling and far from the connection part between the decoupling and the decoupling seat. When turning, since the chain drives the decoupling component to rotate, the installation point between the decoupling component and the chain is in front of the hook groove, so the front part of the decoupling component turns first with the chain, and then the hook groove drives the carrier to turn subsequently. This will inevitably cause the decoupling component and the carrier to be disengaged at the turning point. In addition, the decoupling component is connected to the chain through the chain link integrally formed at the top end of the decoupling seat, and the chain is formed by connecting multiple chain links end to end. This will cause the two ends of the chain link on the decoupling component to be respectively connected to different chain links on the chain. When the chain turns, relative displacement will occur between the chain links, resulting in damage at the connection between the decoupling component and the chain, and then making the turning of the decoupling component and the carrier more asynchronous.

[0004] The invention patent application CN201310052233.1 discloses a bird hook installed on a conveyor chain, and specifically discloses that the bird hook includes an upper member and a lower member; the upper member is connected to the conveyor chain, one end of the lower member is rotatably connected to the upper member, the other end of the lower member is provided with a hook-shaped object with an opening downward, and a spring is provided between the lower member and the upper member. It can be seen from the accompanying drawings that the connection position of the lower member and the chain is closer to the running direction of the bird hook than the position where the arc-shaped groove of the lower member is located. When the bird hook turns, there is a problem that the turning of the bird hook is not synchronized with the turning of the carrier. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a bird hook and a chain transmission assembly for a warehousing system, which can solve the problem of unhooking caused by the asynchronous turning of the bird hook and the carrier at the turning of the conveyor chain.

[0006] The present invention is achieved by the following technical solutions:

[0007] A bird hook for a warehousing system according to the present invention includes a hook seat for connecting to a conveyor chain on the warehousing system, and a hook body for cooperating with a track on the warehousing system; one end of the hook seat is rotatably connected to one end of the hook body; the other end of the hook body is provided with a hook groove; the hook groove is used for hooking a carrier and driving the carrier to move along the track; characterized in that the other end of the hook seat is provided with an installation part for connecting to the conveyor chain; the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook seat, and the axis of the connection shaft of the installation part connected to the conveyor chain far from the connection part of the hook body and the hook seat are located in the same vertical direction; or, the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook seat, and the axis of the connection shaft of the installation part connected to the conveyor chain close to the connection part of the hook body and the hook seat are located in the same vertical direction.

[0008] The running direction of the existing bird hook is as follows: taking one bird hook as an example, the connection between the hook body and the hook seat is located at the front end of the running direction of the bird hook, and the hook groove is located at the rear end of the running direction of the bird hook. In actual use, the conveyor chain drives the hook seat to move together through the installation part, and then drives the hook body to move together. The hook body drives the carrier to move through the hook groove. When the side of the hook body with the arc-shaped surface touches an obstacle, the obstacle can be the baffle of the blocking device or the hook of other carriers. Under the action of the curved surface, the hook body is prompted to swing, so that the hook groove on the hook body is disengaged from the hook of the carrier, thereby pre-storing the carrier on the track and then completing the storage of goods. At this time, the hook body swings reversely under the action of gravity, thus completing the reset of the hook body. In the above-mentioned running direction, the carrier is generally pushed forward by the groove wall of the hook groove away from the connection between the hook body and the hook seat, so the groove wall of the hook groove away from the connection between the hook body and the hook seat is the acting point for pushing the carrier to move along the track. And the acting point of the conveyor chain driving the bird hook to move lies in the connection point between the conveyor chain and the bird hook. The conveyor chain and the hook seat are connected in a steering connection, and their connection is realized through a connecting shaft. The conveyor chain is generally composed of multiple chain links, and each chain link generally has a front hole hinged to the previous chain link and a rear hole hinged to the next chain link. The present invention controls the above two acting points on the same straight line, which can ensure the synchronization of the steering of the bird hook and the carrier when the bird hook turns, and then solve the problem of unhooking during turning.

[0009] The acting points of the conveyor chain driving the bird hook to move include the connecting shaft of the installation part connected to the conveyor chain and away from the connection between the hook body and the hook seat, and the connecting shaft of the installation part connected to the conveyor chain and close to the connection between the hook body and the hook seat. For this reason, there are two implementation schemes: One implementation method is that the perpendicular line of the groove wall of the hook groove away from the connection between the hook body and the hook seat, and the axis of the connecting shaft of the installation part connected to the conveyor chain and close to the connection between the hook body and the hook seat are located in the same vertical direction. Another implementation method is that the perpendicular line of the groove wall of the hook groove away from the connection between the hook body and the hook seat, and the axis of the connecting shaft of the installation part connected to the conveyor chain and away from the connection between the hook body and the hook seat are located in the same vertical direction. When there is only one carrier, both of the above methods can solve the problem of unhooking during turning. When there are two or more carriers, there is still a possibility of unhooking in the former implementation scheme. Specifically, when there are multiple carriers, the carrier behind pushes the carrier in front to move forward in the running direction of the bird hook. Once the carrier in front turns earlier than the bird hook, there will be a problem that the turning directions of the carrier and the bird hook are not synchronized. Compared with the former implementation method, the latter implementation method is more stable and not prone to unhooking. The former implementation scheme is not limited to the use of one carrier either. When the shaft diameter of the connecting shaft is large and the thickness of the carrier is less than the shaft diameter, two carriers can also be accommodated. On the contrary, when the thickness of the carrier is greater than the shaft diameter of the connecting shaft, even when the former implementation method transports only one carrier, there is still a problem of unhooking during turning of the carrier. Therefore, the latter implementation method is more stable.

[0010] The groove walls of the hook grooves are not limited to vertical walls and may also be non-vertical walls, such as groove walls with curved surfaces. When they are vertical walls, the perpendicular line where the groove walls of the above-mentioned hook grooves are located coincides with the vertical wall. When they are non-vertical walls, the tangent line of the curved surface in the vertical direction is the perpendicular line where the groove walls of the hook grooves are located.

[0011] Preferably, when the perpendicular line where the groove wall of the hook groove away from the connection between the hook body and the hook seat is located, and the axis where the connecting shaft of the mounting part away from the connection between the hook body and the hook seat connected to the conveyor chain are located in the same vertical direction, the perpendicular line where the groove wall of the hook groove close to the connection between the hook body and the hook seat is located, and the axis where the connecting shaft of the mounting part close to the connection between the hook body and the hook seat connected to the conveyor chain are located in the same vertical direction.

[0012] Under the above-mentioned implementation mode, the groove width of the hook groove is approximately equal to the width between the connecting shafts at both ends of the mounting part. In this way, it can be ensured that one or several carriers within the accommodating range of the hook groove can move smoothly along the track, especially avoiding unhooking during turning. In addition, carriers with appropriate thicknesses can be selected according to the width of the hook groove.

[0013] Preferably, when the perpendicular line where the groove wall of the hook groove away from the connection between the hook body and the hook seat is located, and the axis where the connecting shaft of the mounting part away from the connection between the hook body and the hook seat connected to the conveyor chain are located in the same vertical direction, the perpendicular line where the groove wall of the hook groove close to the connection between the hook body and the hook seat is parallel to the two side axes of the mounting part connected to the conveyor chain and is within the range of the space between the two side axes of the mounting part connected to the conveyor chain.

[0014] The above-mentioned implementation mode limits that the width of the hook groove can be adjusted within the above range. That is, the width of the hook groove is smaller than the width between the connecting shafts at both ends of the mounting part. When the width of the hook groove is greater than the width between the connecting shafts at both ends of the mounting part, if one carrier or fewer carriers are accommodated in the hook groove (the total thickness of all carriers does not exceed the width of the hook groove), it is not easy to have derailment problems during turning; if more carriers are accommodated in the hook groove (the total thickness of all carriers is greater than the width of the hook groove), it is easy to have derailment problems during turning, especially the carriers close to the movement direction of the bird hook. Therefore, setting the width of the hook groove to be smaller than the width between the connecting shafts at both ends of the mounting part can stably push the carriers to move along the track and avoid derailment during turning.

[0015] Preferably, the mounting part has through holes corresponding to a single link of the conveyor chain.

[0016] The bird hook and the conveyor chain adopt a detachable connection method, which is convenient for installation and maintenance. Compared with the integral molding method, it effectively avoids damage to the mounting part caused by relative displacement of the chain links.

[0017] Preferably, the bird hook further includes a spring connected between the hook body and the hook seat.

[0018] During actual use, the conveyor chain drives the hook seat to move together through the installation part, and then drives the hook body to move together. The hook body drives the carrier to move through the hook groove. When the side of the hook body with the arc-shaped curved surface touches an obstacle, the obstacle can be the baffle of the blocking device or the hook of other carriers. Under the action of the curved surface, the hook body is prompted to swing. On the one hand, the spring arranged between the hook body and the hook seat is compressed, and on the other hand, the hook groove on the hook body is disengaged from the hook of the carrier. Thereby, the carrier is pre-stored on the track, and then the storage of goods is completed. At this time, the hook body swings reversely under the action of gravity and spring elasticity, so as to complete the reset of the hook body.

[0019] Preferably, one end of the spring is connected to the hook seat near the installation part, and the other end of the spring is connected to the hook body near the hook groove.

[0020] Preferably, the natural state of the spring when the bird hook is not installed on the track is a state inclined relative to the horizontal plane.

[0021] Preferably, the hook seat is provided with an upper mounting hole, and the hook body is provided with a lower mounting hole; one end of the spring is fixed in the upper mounting hole, and the other end of the spring is fixed in the lower mounting hole.

[0022] Preferably, the side of the hook body close to the connection between the hook body and the hook seat is an arc-shaped curved surface.

[0023] Preferably, one end of the hook body far from the connection between the hook body and the hook seat is provided with a counterweight through hole.

[0024] A chain transmission assembly for a warehousing system includes a conveyor chain, a track for transporting carriers, and the above-mentioned bird hook for the warehousing system; the bird hook is connected to the conveyor chain through its installation part; the bird hook drives the carrier to move along the track under the drive of the conveyor chain.

[0025] The conveyor chain drives the hook seat to move together through the installation part, and then drives the hook body to move together. The hook body drives the carrier to move along the track through the hook groove. With the above-mentioned bird hook structure, the carrier can be stably driven to move along the track, especially when the conveyor chain turns, effectively avoiding the decoupling of the bird hook and the carrier at the turning point.

[0026] Preferably, the conveyor chain is composed of a plurality of chain links connected end to end, and the installation part is connected to a single chain link on the conveyor chain.

[0027] Preferably, through holes corresponding to the chain links are provided on the mounting part. One side of the mounting part is in contact with the chain link, and a mounting plate is provided on the other side of the mounting part. The mounting plate and the chain link are connected together by a fixing pin passing through the mounting plate, the mounting part, and the chain link in sequence.

[0028] Preferably, the upper surface of the track is a plane, and the hook groove of the bird hook cooperates with the upper surface of the track to drag the carrier placed in the hook groove to move along the track.

[0029] The present invention has the following beneficial effects:

[0030] The bird hook and chain transmission assembly for a storage system of the present invention has a reasonable and simple structure, can solve the problem that the turning of the bird hook and the turning of the carrier are not synchronized at the turning of the transmission chain, and avoid the decoupling of the bird hook and the carrier at the turning. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a bird hook for a storage system of the present invention (when not installed in the storage system);

[0032] Figure 2 is a schematic structural diagram of the connection between a bird hook for a storage system of the present invention and a chain;

[0033] Figure 3 is a schematic structural diagram of a chain transmission assembly for a storage system of the present invention;

[0034] 1 - hook base; 11 - mounting part; 2 - hook body; 21 - hook groove; 22 - arc surface; 23 - configuration through - hole; 3 - spring; 4 - mounting plate; 5 - connecting shaft; 6 - transmission chain; 7 - track. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0036] Existing storage systems use bird hooks to drive the goods carried on the carriers to move from the beginning end to the end of the storage track. After moving to the end, the goods stop moving, thus realizing storage. Existing bird hooks are usually driven by a transmission chain, and the carrier is driven to move along the track through the hook groove provided on the bird hook. At the turning of the transmission chain, the turning of the bird hook and the turning of the carrier are not synchronized, resulting in the decoupling of the bird hook and the carrier at the turning. Based on the above problems, the present invention proposes a bird hook with a simple and reasonable structure.

[0037] As Figure 1A bird hook for a warehousing system includes a hook seat 1, a hook body 2, and a spring 3. One end of the hook seat 1 is rotatably connected to one end of the hook body 2, such as being hinged by a connecting pin. The spring 3 is connected between the hook seat 1 and the hook body 2. After the bird hook is lifted up, the spring relies on its own elastic force to achieve automatic resetting of the bird hook. The hook seat 1 is used to be connected to a conveyor chain in a warehousing system and moves driven by the conveyor chain. The hook body 2 is used to cooperate with a track, and a hook groove 21 is provided at the other end of the hook body 2. The hook groove is used to hook a carrier and drive the carrier to move along the track. The present invention is not limited to the above structure. On the basis of the above structure, the spring provided between the hook seat and the hook body is eliminated, and the automatic resetting of the bird hook can be reset by the bird hook's own gravity.

[0038] In order to realize that the hook seat moves with the conveyor chain, and the hook groove drags the carrier forward, the two are carried out synchronously. The present invention sets the point of action of the conveyor chain driving the bird hook to move and the point of action of the groove wall of the hook groove pushing the carrier to move on the same vertical line. Because when the bird hook moves, the side of the hook body provided with the arc-shaped surface touches the obstacle first, and then the hook body swings, the groove walls on both sides of the hook groove include the groove wall close to the movement direction and the groove wall away from the movement direction. The groove wall close to the movement direction is the left groove wall in the figure, and the groove wall away from the movement direction is the right groove wall in the figure. Based on the existing movement direction of the bird hook, it can be determined that the groove wall of the hook groove away from the connection between the hook body and the hook seat (i.e., the right groove wall in the figure) is used to push the vehicle to move.

[0039] The bird hook of the present invention is provided with a mounting portion connected to a conveying chain at the other end of the hook seat (i.e., the end away from the hook seat and connected to the hook body) Figure 2). In one embodiment, the perpendicular line to the groove wall of the hook groove away from the connection between the hook body and the hook seat, and the axis of the connection shaft of the mounting portion 11 close to the connection between the hook body and the hook seat and connected to the conveyor chain 6 are in the same vertical direction. That is to say, the perpendicular line to the right-side groove wall of the hook groove in the figure and the axis of the left-side connection shaft of the mounting portion are in the same vertical direction. Based on the existing movement direction of the bird hook, the front connection shaft of the mounting portion 11 connected to the conveyor chain rotates first at the turning point. In this embodiment, the turning of the vehicle is synchronized with the turning of the front connection shaft of the mounting portion connected to the conveyor. This can solve the problem of the bird hook being decoupled from the vehicle to a certain extent. The "certain extent" refers to the following three situations: The first situation is that the width of the hook groove does not need to be too wide. For example, if the groove width is about the diameter of the connection shaft, the number of vehicles that can be accommodated in the hook groove is limited, generally one vehicle (taking a clothes hanger as an example). The second situation is that the width of the hook groove does not need to be too wide and can be slightly larger than the diameter of the connection shaft. The thickness of the vehicle can be greater than the diameter of the connection shaft and less than the width of the hook groove. Then the number of vehicles that can be accommodated in the hook groove is generally one vehicle (taking a clothes hanger as an example). In this way, even when there is a gap between the hook groove and the track during turning, the vehicle will not be decoupled from the bird hook. The third situation is that the width of the hook groove can be relatively wide, and the number of vehicles is limited, generally one vehicle (taking a clothes hanger as an example). If there are too many vehicles and the stacked thickness of all vehicles is almost equal to the width of the hook groove, when the bird hook turns, except for the vehicle directly leaning against the right-side groove wall of the hook groove, other vehicles have the problem of being decoupled from the bird hook. Therefore, in addition to the above three situations, there is still a problem of decoupling between the bird hook and the vehicle at the turning of the conveyor chain. Then the above embodiment has poor universality and there are still problems with structural stability. Therefore, another embodiment is proposed.

[0040] In another embodiment, the other end of the hook seat 1 is provided with an installation part 11 connected to the conveyor chain 6; the perpendicular line of the groove wall of the hook groove 21 away from the connection between the hook body 2 and the hook seat 1, and the axis of the connection shaft of the installation part 11 away from the connection between the hook body 2 and the hook seat 1 where it is connected to the conveyor chain 6 are in the same vertical direction. That is to say, the perpendicular line of the right-side groove wall of the hook groove in the figure and the axis of the right-side connection shaft of the installation part are in the same vertical direction. In this embodiment, the turning of the carrier is synchronized with the turning of the rear connection shaft of the installation part where it is connected to the conveyor. In this embodiment, the width of the hook groove can be greater than the width between the connection shafts at both ends of the installation part, or the width of the hook groove may not be greater than the width between the connection shafts at both ends of the installation part. In the former case, as long as the sum of the thicknesses of all the carriers accommodated in the hook groove is not greater than the width between the connection shafts at both ends of the installation part, a certain number of carriers or several carriers can be accommodated in the hook groove, and it can be ensured that the bird hook and the carrier do not get dragged when the conveyor chain turns. Otherwise, the carrier at the front end of the moving direction is likely to get unhooked from the bird hook when turning. In the latter case, the width of the hook groove can be equal to the width between the connection shafts at both ends of the installation part, that is, the perpendicular line of the groove wall of the hook groove close to the connection between the hook body 2 and the hook seat 1, and the axis of the connection shaft of the installation part 11 close to the connection between the hook body and the hook seat where it is connected to the conveyor chain 6 are in the same vertical direction. Or, the width of the hook groove can be less than the width between the connection shafts at both ends of the installation part, that is, the perpendicular line of the groove wall of the hook groove close to the connection between the hook body 2 and the hook seat 1 is parallel to the two side axes of the installation part 11 where it is connected to the conveyor chain 6 and is within the range of the space between the two side axes of the installation part 11 where it is connected to the conveyor chain 6. In this case, the hook groove can accommodate several carriers allowed by the width of the hook groove, and when the carriers in the hook groove move along the track under the rotation of the bird hook, even at the turning point, they will not get unhooked. Considering from the perspective of maximizing the number of accommodated carriers, it is preferable to make the width of the hook groove equal to the width between the connection shafts at both ends of the installation part.

[0041] To ensure steering synchronization, the present invention also improves the connection between the bird hook and the conveyor chain. In the prior art, a link is integrally formed at the top of the hook seat of the bird hook, and then the bird hook is connected to the conveyor chain through the integrally formed link. When the conveyor chain needs to turn, relative displacement occurs between the links. When the link and the hook seat are integrally arranged and connected to the conveyor chain, the rotation point of the hook seat following the rotation of the conveyor chain is on different links, which is equivalent to the hook seat connecting the conveyor chain across the links. The relative displacement between the conveyor chains affects the synchronization of the bird hook and the vehicle steering. When the relative displacement is large, a large torsional force will affect the connection relationship between the bird hook and the conveyor chain, and then damage the installation part. For this reason, the present invention designs a detachable connection method. The installation part 11 has a through hole corresponding to a single link on the conveyor chain 6, and the installation part is connected to a single link on the conveyor chain by using a pin to pass through the through hole. The conveyor chain is formed by a plurality of links connected end to end to form a closed loop, and adjacent links are connected by pins. When the installation part is set with a single link on the conveyor chain 6, the bird hook moves along with the single link on the conveyor chain, that is, the movement of the bird hook is synchronized with the movement of the single link and will not be affected by the simultaneous movement of different links. Since adjacent links of the conveyor chain are connected by pins, the connection between the installation part and the link can also be connected by the same pin, or an appropriate change in length can be made on the basis of this pin structure, and the connection between the installation part and the link can be completed without adding additional pins. Specifically, as Figure 2 , a through hole corresponding to the link is provided on the installation part 11, one side of the installation part 11 is attached to the link, and an installation plate 4 is provided on the other side of the installation part 11. The installation plate 4 and the link are connected together by a fixing pin 5 passing through the installation plate 4, the installation part 11 and the link in sequence. In addition, this detachable connection method is convenient for maintenance and replacement. Once a failure or wear occurs, only one link needs to be replaced.

[0042] The conveyor chain adopted by the present invention is composed of a plurality of links connected end to end. There are two connecting shafts connecting the installation part and the link, and the connecting shaft is the above-mentioned fixing pin. The size of the existing link can basically determine the preferred size of the hook groove width. If there are special needs, the link can be customized, and the groove size can be set according to the link size.

[0043] One side of the hook body 2 of the bird hook close to the connection between the hook body 2 and the hook seat 1 is an arc-shaped curved surface 22. When an obstacle appears, the arc-shaped curved surface touches the obstacle, and under the action of the curved surface, the hook body swings, compresses the spring, and makes the hook groove on the hook body disengage from the hook of the vehicle. Moreover, the setting of the arc-shaped curved surface can effectively reduce the rigidity of the hook body.

[0044] The spring can be compressed when the hook body swings after the barrier touches the bird hook; it can assist the hook body to reset when the vehicle disengages from the hook groove. In addition, the setting of the spring also affects the synchronization between the bird hook and the vehicle steering. In the utility model patent CN201821133140.6, one end of the spring is connected to the tow hook seat, and is close to the connection between the tow hook seat and the tow hook. The other end of the spring is connected to the tow hook, and is close to the connection between the tow hook seat and the tow hook. Since the track used in the warehousing system is a track with a flat upper surface (see Figure 3 ), the hook groove of the bird hook cooperates with the upper surface of the track to drag the vehicle in the hook groove to move along the track. Then when both ends of the spring are close to the connection between the tow hook seat and the tow hook, when the bird hook turns, since there are no baffles on both sides of the track, no anti-deflection force can be provided for the tow hook. Affected by turning inertia, centripetal force, etc., the tow hook is prone to deviate from the guide rail, and at this time, the vehicle in the hook groove is prone to unhooking. In the present invention, one end of the spring 3 is connected to the hook seat 1 close to the mounting portion 11, and the other end of the spring 3 is connected to the hook body 2 close to the hook groove 21. Equivalently, both ends of the spring are connected at positions close to the openings of both the hook seat 1 and the hook body 2. When the bird hook turns, the spring can be used to restrain the hook body from deviating from the track. Figure 1 In, the natural state of the spring when the bird hook is not installed on the track is a state inclined relative to the horizontal plane. When the bird hook is Figure 3 installed on the warehousing system, the lower part of the hook body of the bird hook is installed on the track, and the spring is compressed to a certain extent. Specifically, an upper mounting hole is provided on the hook seat 1, and a lower mounting hole is provided on the hook body 2. The upper mounting hole and the lower mounting hole are preferably cylindrical holes. In this way, the spring can be compressed and restored axially in the mounting hole. The spring is preferably a tube spring.

[0045] One end of the hook body 2, which is far from the connection between the hook body 2 and the hook seat 1, is provided with a counterweight through hole 23. When the goods are heavy, the hook groove is prone to unhook from the hook body of the vehicle. At this time, the counterweight through hole can be used to add weight to the hook body, so as to avoid the separation of the hook groove and the hook body; otherwise, the hook groove and the hook body will separate, and unhooking will occur whether the bird hook is moving on a straight track or a turning track.

[0046] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the above principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. A bird hook for a warehousing system, comprising a hook base for connecting with a conveyor chain on the warehousing system, and a hook body for cooperating with a track on the warehousing system; one end of the hook base is rotatably connected to one end of the hook body; the other end of the hook body is provided with a hook groove; the hook groove is used for hooking a carrier and driving the carrier to move along the track. Characterized in that, the other end of the hook base is provided with an installation part for connecting with the conveyor chain; the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis line of the connection shaft of the installation part far from the connection part of the hook body and the hook base where it is connected with the conveyor chain are in the same vertical direction; or, the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis line of the connection shaft of the installation part close to the connection part of the hook body and the hook base where it is connected with the conveyor chain are in the same vertical direction; the groove wall of the hook groove is a vertical wall or a curved surface groove wall. When the groove wall of the hook groove is a vertical wall, the perpendicular line of the groove wall of the hook groove coincides with the vertical wall; when the groove wall of the hook groove is a curved surface groove wall, the tangent line of the curved surface in the vertical direction is the perpendicular line of the groove wall of the hook groove; the installation part has a through hole corresponding to a single link on the conveyor chain; one side of the hook body close to the connection part of the hook body and the hook base is an arc-shaped curved surface.

2. The bird hook for a warehousing system according to claim 1, Characterized in that, when the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis line of the connection shaft of the installation part far from the connection part of the hook body and the hook base where it is connected with the conveyor chain are in the same vertical direction, the perpendicular line of the groove wall of the hook groove close to the connection part of the hook body and the hook base, and the axis line of the connection shaft of the installation part close to the connection part of the hook body and the hook base where it is connected with the conveyor chain are in the same vertical direction.

3. The bird hook for a warehousing system according to claim 1, Characterized in that, when the perpendicular line of the groove wall of the hook groove far from the connection part of the hook body and the hook base, and the axis line of the connection shaft of the installation part far from the connection part of the hook body and the hook base where it is connected with the conveyor chain are in the same vertical direction, the perpendicular line of the groove wall of the hook groove close to the connection part of the hook body and the hook base is parallel to the axis lines on both sides of the installation part where it is connected with the conveyor chain, and is within the range of the space between the axis lines on both sides of the installation part where it is connected with the conveyor chain.

4. The bird hook for a warehousing system according to claim 1, Characterized in that, it further includes a spring connected between the hook body and the hook base.

5. The bird hook for a warehousing system according to claim 4, Characterized in that, one end of the spring is connected to the hook base near the installation part, and the other end of the spring is connected to the hook body near the hook groove.

6. The bird hook for a warehousing system according to claim 4, Characterized in that, the natural state of the spring when the bird hook is not installed on the track is a state inclined relative to the horizontal plane.

7. The bird hook for a warehousing system according to claim 4, Characterized in that, The hook seat is provided with an upper mounting hole, and the hook body is provided with a lower mounting hole; one end of the spring is fixed in the upper mounting hole, and the other end of the spring is fixed in the lower mounting hole.

8. The bird hook for a warehousing system according to claim 1, wherein, one end of the hook body, which is away from the connection between the hook body and the hook seat, is provided with a counterweight through hole.

9. A chain transmission assembly for a warehousing system, wherein, it includes a transmission chain, a track for transporting a vehicle, and the bird hook for a warehousing system according to claim 1; the bird hook is connected to the transmission chain through its mounting portion; the bird hook drives the vehicle to move along the track under the drive of the transmission chain.

10. The chain transmission assembly for a warehousing system according to claim 9, wherein, the transmission chain is formed by connecting a plurality of chain links end to end, and the mounting portion is connected to a single chain link on the transmission chain.

11. The chain transmission assembly for a warehousing system according to claim 10, wherein, through holes corresponding to the chain links are provided on the mounting portion, one side of the mounting portion is in contact with the chain link, and a mounting plate is provided on the other side of the mounting portion; the mounting plate and the chain link are connected together by a fixing pin passing through the mounting plate, the mounting portion and the chain link in sequence.

12. The chain transmission assembly for a warehousing system according to claim 9, wherein, the upper surface of the track is a plane, and the hook groove of the bird hook cooperates with the upper surface of the track to drag the vehicle placed in the hook groove to move along the track.

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