Stacking machine and cargo carrying table loose rope detection anti-falling device thereof

Abstract

The utility model relates to the technical field of stacking machines, and provides a stacking machine and a rope loosening detection anti-falling device of a cargo carrying table of the stacking machine, the rope loosening detection anti-falling device of the cargo carrying table of the stacking machine is arranged on the cargo carrying table and comprises a fixing frame, a connecting piece, an elastic assembly and a connecting rod mechanism, the elastic assembly is connected with the lower end of the connecting piece, and the elastic assembly can provide downward elastic acting force for the connecting piece when the lifting rope is broken so as to drive the connecting piece to move downwards; the connecting rod mechanism is arranged on the fixing frame, the first end of the connecting rod mechanism is connected with the connecting piece, the second end of the connecting rod mechanism is provided with a brake block, and the connecting rod mechanism can drive the brake block to make contact with the stacking machine stand column to generate braking force when the connecting piece moves downwards. The braking device is simple in structure, small in occupied space and remarkable in braking effect, and only needs to be mounted on a cargo carrying table without a speed limiter.

Description

Technical Field

[0001] The utility model relates to the technical field of stackers, in particular to a stacker and a rope slack detection and anti-falling device for its load platform. Background Art

[0002] As a key device in three-dimensional warehousing equipment, during the use of a stacker, due to abnormal conditions, the lifting steel wire rope may become slack or break. Based on this, to ensure the safety of goods and equipment, a safety braking device is usually set. The safety braking device uses a speed limiter. When the speed limiter detects that the load platform falls at an excessive speed, the rope wheel is locked and the safety clamp is lifted to brake the load platform. However, for the braking method using a speed limiter, the steel wire rope needs to be linked at the same time, and the installation space occupied is large. Summary of the Utility Model

[0003] The utility model provides a stacker and a rope slack detection and anti-falling device for its load platform, so as to solve the defects of complex structure and large installation space of the load platform braking device in the prior art.

[0004] The utility model provides a rope slack detection and anti-falling device for a stacker load platform, which is arranged on the load platform and includes:

[0005] A fixed frame;

[0006] A connecting piece, the upper end of the connecting piece is connected with a suspension rope;

[0007] An elastic component, the elastic component is connected to the lower end of the connecting piece, and the elastic component can provide a downward elastic force to the connecting piece when the suspension rope is disconnected, so as to drive the connecting piece to move downward;

[0008] A link mechanism is arranged on the fixed frame, the first end of the link mechanism is connected with the connecting piece, the second end of the link mechanism is provided with a brake block, and the link mechanism can drive the brake block to contact the stacker column to generate a braking force when the connecting piece moves downward.

[0009] According to the rope slack detection and anti-falling device for a stacker load platform provided by the utility model, the link mechanism includes a rotating arm and a connecting shaft. The rotating arm is rotatably connected to the fixed frame. The first end of the rotating arm is connected with the connecting piece, the second end of the rotating arm is connected with the connecting shaft, and the free end of the connecting shaft is connected with the brake block. The rotating arm can rotate when the connecting piece moves downward, and drive the brake block to contact the stacker column through the connecting shaft.

[0010] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, it further includes a controller and a contact switch. The controller is electrically connected to the contact switch. The contact switch is arranged below one side of the connecting member. The connecting member can touch the contact switch when moving downward to send the rope disconnection information to the controller.

[0011] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, the adapter shaft includes a first sphere, a second sphere and an adapter rod. The first sphere is arranged at the second end of the swing arm. The second sphere is arranged at the upper end of the brake block. Both ends of the adapter rod are provided with bearing outer rings. The first sphere is rotatably arranged in one of the bearing outer rings. The second sphere is rotatably arranged in the other bearing outer ring.

[0012] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, it further includes a guide seat. The guide seat is installed on the load platform. The guide seat is provided with a chute. The brake block is movably arranged in the chute along a first direction.

[0013] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, the guide seat includes a first clamping plate, a connecting block and a second clamping plate. The first clamping plate is connected to the load platform. The second clamping plate is arranged at an interval from the first clamping plate. The connecting block is arranged between the first clamping plate and the second clamping plate. The first clamping plate, the connecting block and the second clamping plate enclose to form the chute.

[0014] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, the first clamping plate and / or the second clamping plate are provided with guide holes. The guide holes extend along a first direction. The brake block is correspondingly provided with a protruding structure. The protruding structure is adapted to the guide holes and is movably arranged in the guide holes.

[0015] According to the rope slack detection and anti-falling device for the load platform of the stacker provided by the present utility model, the fixing frame is provided with a connecting plate. The elastic component includes a sleeve, an elastic member and a connecting rod. The upper end of the connecting rod penetrates through the connecting plate and is connected to the lower end of the connecting member. The lower end of the connecting rod is connected to the bottom of the sleeve. The elastic member is arranged in a compressed state in the sleeve. The upper end of the elastic member abuts against the connecting plate. The lower end of the elastic member abuts against the bottom of the sleeve. The elastic member is used to apply an elastic force to the bottom of the sleeve when the suspension rope is disconnected to drive the sleeve and the connecting rod to move downward.

[0016] According to the anti - falling device for detecting loose ropes on the load platform of the stacker provided by the present utility model, a protrusion is provided on the outer side of the upper end of the sleeve, and the protrusion can contact the contact switch when the sleeve moves downward.

[0017] The present utility model also provides a stacker, which includes a stacker column and a load platform, and the load platform is provided with the anti - falling device for detecting loose ropes on the load platform of the stacker as described above.

[0018] An anti - falling device for detecting loose ropes on the load platform of a stacker provided by the present utility model is arranged on the load platform and includes a fixed frame, a connecting piece, an elastic component and a linkage mechanism. During the process of the load platform being lifted and lowered by a hoisting rope, when loose rope or broken rope occurs, the elastic component will drive the connecting piece to move downward rapidly through elastic force. When the connecting piece moves downward, it will drive the linkage mechanism to move, and the linkage mechanism further drives the brake block to contact the stacker column, generating braking force through mutual friction to prevent the load platform from sliding downward, thereby preventing the load platform from falling. The structure of the present utility model is simple, there is no need to install a speed limiter, and it only needs to be installed on the load platform, occupying a small space and having a remarkable braking effect. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the front view of the stacker provided by the embodiment of the present utility model.

[0021] Figure 2 It is the structural schematic diagram of the anti - falling device for detecting loose ropes on the load platform provided by the embodiment of the present utility model.

[0022] Figure 3 It is one of the partial structural schematic diagrams of the anti - falling device for detecting loose ropes on the load platform provided by the embodiment of the present utility model.

[0023] Figure 4 It is the second partial structural schematic diagram of the anti - falling device for detecting loose ropes on the load platform provided by the embodiment of the present utility model.

[0024] Reference Signs:

[0025] 1. Fixed frame; 2. Connecting piece; 3. Suspension rope; 4. Brake block; 5. Rotary arm; 6. Adapter shaft; 7. Contact switch; 8. Guide seat; 81. First clamping plate; 82. Second clamping plate; 9. Guide hole; 10. Connecting plate; 11. Sleeve; 12. Elastic member; 13. Connecting rod; 14. Stacker column; 15. Load platform; 16. Buffer member. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the protection scope of the present utility model.

[0027] The following Figures 1 - 4 describes a stacker and a load platform loose rope detection and anti - fall device thereof of the present utility model.

[0028] A load platform loose rope detection and anti - fall device provided in this embodiment is arranged on the load platform 15. As Figures 1 - 2 shown, it includes: a fixed frame 1, a connecting piece 2, an elastic component and a link mechanism.

[0029] Wherein, the upper end of the connecting piece 2 is connected with a suspension rope 3, the elastic component is connected with the lower end of the connecting piece 2, and the elastic component can provide a downward elastic force to the connecting piece 2 when the suspension rope 3 is disconnected, so as to drive the connecting piece 2 to move downward; the link mechanism is arranged on the fixed frame 1, the first end of the link mechanism is connected with the connecting piece 2, and a brake block 4 is arranged at the second end of the link mechanism. The link mechanism can drive the brake block 4 to contact the stacker column 14 to generate a braking force when the connecting piece 2 moves downward.

[0030] It can be seen from the above solution that during the process of the load platform 15 being lifted and lowered by the suspension rope 3, when loose rope or rope breakage occurs, the elastic component will drive the connecting piece 2 to move downward rapidly through the elastic force. When the connecting piece 2 moves downward, it will drive the link mechanism to move, and the link mechanism further drives the brake block 4 to contact the stacker column 14, generating a braking force through mutual friction to prevent the load platform 15 from sliding downward, thereby preventing the load platform 15 from falling. The structure of the present utility model is simple, there is no need to install a speed limiter, and it only needs to be installed on the load platform 15, occupying a small space and having a remarkable braking effect.

[0031] In this embodiment, a controller and a contact switch 7 are further included. The controller is electrically connected to the contact switch 7. The contact switch 7 is arranged below one side of the connecting member 2. The elastic component can touch the contact switch 7 when moving downward to send the information of the broken suspension rope 3 to the controller.

[0032] With such a setting, by arranging the contact switch 7, the movement of the elastic component during rope loosening or breaking is utilized to trigger the contact switch 7, thereby transmitting a detection signal to the controller, realizing rope loosening or breaking alarm, and integrating the detection of rope loosening or breaking with the anti-falling braking of the loading platform 15. It occupies a small space, can quickly respond when the rope breaks or becomes loose, prevent the equipment or personnel from falling, and ensure safety.

[0033] In some embodiments, the link mechanism includes a rotating arm 5 and a connecting shaft 6. The rotating arm 5 is rotatably connected to the fixed frame 1. The first end of the rotating arm 5 is connected to the connecting member 2, the second end of the rotating arm 5 is connected to the connecting shaft 6, and a braking block 4 is connected to the free end of the connecting shaft 6. The rotating arm 5 can rotate when the connecting member 2 moves downward, and drives the braking block 4 to contact the stacker column 14 through the connecting shaft 6.

[0034] Specifically, the connecting shaft 6 includes a first sphere, a second sphere and a connecting rod. The first sphere is arranged at the second end of the rotating arm 5, the second sphere is arranged at the upper end of the braking block 4, and bearing outer rings are arranged at both ends of the connecting rod. The first sphere is rotatably arranged in one of the bearing outer rings, and the second sphere is rotatably arranged in the other bearing outer ring; that is to say, the bearing outer ring and the sphere form a spherical plain bearing, that is, the connecting shaft 6 is composed of two rod ends spherical plain bearings. Through the designed multi-degree-of-freedom connecting shaft 6, the movement of the rotating arm 5 is transmitted to the braking block 4, so that during the upward rotation of the second end of the rotating arm 5, the braking block 4 can gradually approach the stacker column 14 and be in close contact with the column, fixing the loading platform 15 on the column to prevent the loading platform 15 from falling.

[0035] Further, a guiding seat 8 is further included. The guiding seat 8 is installed on the loading platform 15. The guiding seat 8 is provided with a sliding groove. The braking block 4 is movably arranged in the sliding groove along a first direction. The first direction has an included angle with the vertical direction, and the included angle is less than 90 degrees. Thus, the braking block 4 gradually approaches the stacker column 14 along an inclined upward direction when acting. Since the braking block 4 moves obliquely upward under the drive of the second end of the rotating arm 5 instead of moving linearly up and down, one of the two rod ends spherical plain bearings forming the connecting shaft 6 can be set as a bent rod type rod ends spherical plain bearing for realizing the oblique movement of the braking block 4.

[0036] As Figure 3As shown, the guiding seat 8 includes a first clamping plate 81, a connecting block, and a second clamping plate 82. The first clamping plate 81 is connected to the loading platform 15. The second clamping plate 82 is spaced apart from the first clamping plate 81. The connecting block is disposed between the first clamping plate 81 and the second clamping plate 82 and is capable of slidingly contacting the brake block 4. The first clamping plate 81, the connecting block, and the second clamping plate 82 enclose to form a chute, and the opening side of the chute faces the stacker column 14. The surface of the connecting block facing the stacker column 14 is an inclined surface, such that the brake block 4 slides along the inclined surface and gradually approaches the stacker column 14.

[0037] With such an arrangement, the brake block 4 is slidably disposed in the chute. By providing the chute, a guiding effect is provided for the brake block 4 to ensure that the brake block 4 can move along a set trajectory, thereby achieving the braking effect on the loading platform 15.

[0038] In this embodiment, a guiding hole 9 is provided on the second clamping plate 82. The guiding hole 9 extends along a first direction. A protruding structure is provided on one side of the brake block 4. The protruding structure is adapted to the guiding hole 9 and is movably disposed in the guiding hole 9.

[0039] Optionally, guiding holes 9 are oppositely provided on the first clamping plate 81 and the second clamping plate 82. The guiding holes 9 extend along the first direction. Protruding structures are provided on both sides of the brake block 4. The protruding structures are adapted to the guiding holes 9 and are movably disposed in the guiding holes 9.

[0040] With such an arrangement, by adopting a sliding connection method of concave-convex cooperation, not only is the movement direction of the brake block 4 further restricted, but also the stability and reliability of the connection between the brake block 4 and the chute are improved, ensuring that the brake block 4 can move along the first direction without skewing and the brake block 4 will not disengage from the chute.

[0041] In some embodiments, a buffer member 16 is further provided. The buffer member 16 is disposed between the guiding seat 8 and the rotating arm 5. For example, the buffer member 16 is a spring. The acting force of the spring is less than the acting force of the elastic member 12. When one end of the spring is connected to the second end of the rotating arm 5 and the other end of the spring is connected to the second clamping plate 82, when the lifting rope 3 becomes slack or breaks, the connecting member 2 descends rapidly and drives the second end of the rotating arm 5 to rise. By providing the spring, the impact force and vibration generated by the sudden displacement of the rotating arm 5 can be prevented, thereby protecting the stability and safety of the entire mechanism; and when the maintenance of the lifting rope 3 is completed, the spring helps to pull back or push back the displaced components to their original positions.

[0042] Refer to Figure 2 and Figure 4, in this embodiment, the fixing frame 1 is provided with a connecting plate 10. The elastic component includes a sleeve 11, an elastic member 12 and a connecting rod 13. The upper end of the connecting rod 13 penetrates through the connecting plate 10 and is connected to the lower end of the connecting member 2. The lower end of the connecting rod 13 is connected to the bottom of the sleeve 11. The elastic member 12 can be a disc spring, which is arranged in a compressed state in the sleeve 11. The upper end of the elastic member 12 abuts against the connecting plate 10, and the lower end of the elastic member 12 abuts against the bottom of the sleeve 11. The elastic member 12 is used to apply an elastic force to the bottom of the sleeve 11 when the lifting rope 3 breaks, so as to drive the sleeve 11 and the connecting rod 13 to move downward.

[0043] As Figure 2 shown, the connecting plate 10 is horizontally arranged. The connecting rod 13 vertically penetrates through the connecting plate 10 and can move up and down along the vertical direction. The upper end of the connecting rod 13 is located above the connecting plate 10 and is connected to the connecting member 2. The lower end of the connecting rod 13 is located below the connecting plate 10 and is connected to the bottom of the sleeve 11. The top of the sleeve 11 abuts against the lower surface of the connecting plate 10. When the loading platform 15 is normally lifted and lowered, the lifting rope 3 exerts a traction force on the connecting rod 13 through the connecting member 2. The elastic member 12 is arranged in a compressed state in the sleeve 11. When the lifting rope 3 is slack or breaks, the traction force at the upper end of the connecting rod 13 disappears or decreases. The bottom of the sleeve 11 is subjected to the elastic force of the elastic member 12, so that the sleeve 11 and the connecting rod 13 move downward together. The connecting rod 13 drives the connecting member 2 to move, and the connecting member 2 drives the first end of the rotating arm 5 to move downward together, and further transmits the power to the brake block 4 through the transfer shaft 6, so that the brake block 4 contacts the stacker column 14 to prevent the loading platform 15 from descending.

[0044] Optionally, the lower end of the connecting rod 13 is provided with a thread. The connecting rod 13 passes through the bottom of the cylinder body, and is threadedly connected to the connecting rod 13 outside the sleeve 11 through a nut to connect the connecting rod 13 to the bottom of the sleeve 11.

[0045] In this embodiment, a protrusion is provided on the outer side of the upper end of the sleeve 11. The protrusion can contact the proximity switch 7 when the sleeve 11 moves downward. With such a setting, by improving the structure of the sleeve 11, when the lifting rope 3 is slack or breaks, the protrusion will touch the proximity switch 7 during the downward movement of the sleeve 11, so as to send a signal of the falling of the loading platform 15 to the controller to realize the alarm for loose rope or broken rope.

[0046] Referring to Figure 1, the embodiment of the present utility model further provides a stacker, which includes a stacker column 14 and a load platform 15. The load platform 15 is provided with the above-mentioned stacker load platform loose rope detection anti-falling device. The load platform 15 is slidably connected to the stacker column 14 and can move up and down along the stacker column 14. By adopting the above-mentioned stacker load platform loose rope detection anti-falling device, the structure is simple, the occupied space is small, there is no need to set a speed limiter anymore, and the loose and broken rope detection and anti-falling braking can be integrated into one. During the lifting process of the load platform 15, it can quickly respond when the rope breaks or becomes loose, prevent the equipment or personnel from falling, and ensure safety.

[0047] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A rope slack detection and anti-falling device for the load platform of a stacker, characterized in that It is arranged on the loading platform (15) and includes: A fixing frame (1); A connecting member (2), with a lifting rope (3) connected to the upper end of the connecting member (2); An elastic component, connected to the lower end of the connecting member (2), which can provide a downward elastic force to the connecting member (2) when the lifting rope (3) breaks, so as to drive the connecting member (2) to move downward; A link mechanism, arranged on the fixing frame (1), with the first end of the link mechanism connected to the connecting member (2), and a brake block (4) arranged at the second end of the link mechanism. The link mechanism can drive the brake block (4) to contact the stacker column (14) to generate a braking force when the connecting member (2) moves downward.

2. The rope slack detection and anti-falling device for the load platform of the stacker according to claim 1, characterized in that The link mechanism includes a swing arm (5) and a transfer shaft (6). The swing arm (5) is rotatably connected to the fixing frame (1). The first end of the swing arm (5) is connected to the connecting member (2), and the second end of the swing arm (5) is connected to the transfer shaft (6). The free end of the transfer shaft (6) is connected with the brake block (4). The swing arm (5) can rotate when the connecting member (2) moves downward, and drive the brake block (4) to contact the stacker column (14) through the transfer shaft (6).

3. The rope slack detection and anti-falling device for the stacking machine load platform according to claim 1, wherein It further includes a controller and a contact switch (7). The controller is electrically connected to the contact switch (7). The contact switch (7) is arranged below one side of the connecting member (2). The connecting member (2) can touch the contact switch (7) when moving downward, so as to send the information that the lifting rope (3) is disconnected to the controller.

4. The rope slack detection and anti-falling device for the stacker load platform according to claim 2, characterized in that, The transfer shaft (6) includes a first sphere, a second sphere and a transfer rod. The first sphere is arranged at the second end of the swing arm (5), the second sphere is arranged at the upper end of the brake block (4), and bearing outer rings are arranged at both ends of the transfer rod. The first sphere is rotatably arranged in one of the bearing outer rings, and the second sphere is rotatably arranged in the other bearing outer ring.

5. The anti-falling device for detecting rope slack of the stacking machine load platform according to claim 1, characterized in that, It further includes a guide seat (8). The guide seat (8) is installed on the loading platform (15). The guide seat (8) is provided with a chute, and the brake block (4) is movably arranged in the chute along a first direction.

6. The anti-falling device for detecting loose ropes on the load platform of the stacker according to claim 5, characterized in that The guide seat (8) includes a first clamping plate (81), a connecting block and a second clamping plate (82). The first clamping plate (81) is connected to the loading platform (15), the second clamping plate (82) is arranged at an interval from the first clamping plate (81), the connecting block is arranged between the first clamping plate (81) and the second clamping plate (82), and the first clamping plate (81), the connecting block and the second clamping plate (82) enclose to form the chute.

7. The rope slack detection and anti-falling device for the stacker load platform according to claim 6, characterized in that Guide holes (9) are arranged on the first clamping plate (81) and / or the second clamping plate (82). The guide holes (9) extend along the first direction. The brake block (4) is correspondingly provided with a convex structure, which is adapted to the guide holes (9), and the convex structure is movably arranged in the guide holes (9).

8. The rope slack detection and anti-falling device for the load platform of the stacker according to claim 3, characterized in that, The fixing frame (1) is provided with a connecting plate (10). The elastic component includes a sleeve (11), an elastic member (12), and a connecting rod (13). The upper end of the connecting rod (13) penetrates through the connecting plate (10) and is connected to the lower end of the connecting member (2). The lower end of the connecting rod (13) is connected to the bottom of the sleeve (11). The elastic member (12) is arranged in a compressed state in the sleeve (11), and the upper end of the elastic member (12) abuts against the connecting plate (10), and the lower end of the elastic member (12) abuts against the bottom of the sleeve (11). The elastic member (12) is used to apply an elastic force to the bottom of the sleeve (11) when the lifting rope (3) breaks, so as to drive the sleeve (11) and the connecting rod (13) to move downward.

9. The rope slack detection and anti-falling device for the load platform of the stacker according to claim 8, characterized in that, A protrusion is provided on the outer side of the upper end of the sleeve (11), and the protrusion can contact the contact switch (7) when the sleeve (11) moves downward.

10. A stacker, characterized in that, It includes a stacker column (14) and a load platform (15), and the load platform (15) is provided with a stacker load platform loose rope detection and anti-falling device as described in any one of claims 1-9.

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