A fall protection device and a holding and taking apparatus

Abstract

The application discloses a kind of anti-falling device and hold and take equipment.The anti-falling device includes rack, counterweight, counterweight cable, locking assembly, rotary drive and retaining member, counterweight is vertically arranged in rack, one end of counterweight cable is connected with counterweight;Locking assembly includes first anti-falling rack, second anti-falling rack, rotary drive and retaining member, first anti-falling rack extends along vertical direction and is arranged on rack, second anti-falling rack is rotatably arranged on counterweight;Rotary drive is used to drive second anti-falling rack to rotate, so that second anti-falling rack and first anti-falling rack can be engaged when counterweight cable breaks;Retaining member is used to provide second anti-falling rack with force away from the rotation of first anti-falling rack when counterweight cable is in normal state.The anti-falling device can effectively prevent counterweight from falling freely when counterweight cable breaks.

Description

Technical Field

[0001] This utility model relates to the field of fall protection device technology, and in particular to a fall protection device and a holding device. Background Technology

[0002] When picking up, lifting, and flipping heavy workpieces, a holding device can be used. The holding device may include a frame, a holding assembly, and a counterweight. Both the holding assembly and the counterweight are movable vertically relative to the frame. The counterweight is connected to the holding assembly via a chain so that when the holding assembly is raised or lowered, the counterweight can offset part of the load, reducing the load on the motor.

[0003] However, the aforementioned holding device has a significant safety hazard: the counterweight side lacks an active chain breakage protection structure. During operation, when the chain suddenly breaks, the holding assembly can maintain a braking state due to the self-locking action of the motor and reducer, preventing it from falling freely. However, the counterweight will instantly lose its restraint and fall freely under its own weight. Since the counterweight is usually quite heavy, the impact force generated by its fall will far exceed the rated load of the base support structure in the frame, easily causing serious accidents such as frame deformation and breakage, or even damage to the main body of the equipment. Utility Model Content

[0004] This application discloses a fall prevention device and a holding device, which can effectively prevent the counterweight from falling freely when the chain breaks unexpectedly, thus avoiding accidents caused by the free fall of the counterweight.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application disclose a fall protection device, comprising:

[0006] frame;

[0007] A counterweight, which is movably mounted on the frame in a vertical direction;

[0008] A counterweight cable, one end of which is connected to the counterweight component;

[0009] A locking assembly includes a first anti-fall rack, a second anti-fall rack, a rotation drive, and a retainer. The first anti-fall rack extends along the vertical direction and is disposed on the frame. The second anti-fall rack is rotatably disposed on the counterweight. The rotation drive is used to drive the second anti-fall rack to rotate so that the second anti-fall rack can engage with the first anti-fall rack when the counterweight cable breaks. The retainer is used to provide a force to the second anti-fall rack to rotate away from the first anti-fall rack when the counterweight cable is in a normal state.

[0010] Optionally, the locking assembly further includes a mounting base disposed on the counterweight, and the second anti-fall rack is rotatably connected to the mounting base via a rotating shaft.

[0011] Optionally, the rotation drive includes an elastic element, the first end of which is fixedly connected to the second anti-fall rack, and the second end of which is connected to the mounting base.

[0012] Optionally, the elastic element includes any one of a tension spring, a rubber column, or a rubber composite spring.

[0013] Optionally, the retaining element includes a suspension rope that is taut when the counterweight cable is intact. The first end of the suspension rope is fixed relative to the second anti-fall rack, and the second end of the suspension rope passes around the rotating shaft on the side opposite to the first anti-fall rack and is connected to the counterweight cable.

[0014] Optionally, the locking assembly further includes a rope connector, which is fixedly connected to the second anti-fall rack, and the first end of the rope is connected to the rope connector.

[0015] Optionally, the first anti-fall rack includes a first rack body extending along the vertical direction and a plurality of first tooth grooves arranged on the first rack body along the vertical direction. The first tooth groove has a first tooth surface and a second tooth surface opposite to each other along the vertical direction. The first tooth surface in the same first tooth groove is located below the second tooth surface. A first locking plane is provided on the first tooth surface. The first locking plane extends along a first horizontal direction or extends along a direction from the bottom of the first tooth groove to the outside of the first tooth groove and is inclined upward.

[0016] The second anti-fall rack includes a second rack body extending along the vertical direction and a plurality of second tooth grooves arranged on the second rack body along the vertical direction. The second tooth groove has a third tooth surface and a fourth tooth surface opposite to each other along the vertical direction. The third tooth surface in the same second tooth groove is located below the fourth tooth surface. A second locking plane matching the first locking plane is provided on the fourth tooth surface. When the second anti-fall rack is engaged with the first anti-fall rack, the second locking plane abuts against the first locking plane.

[0017] Optionally, a first guide surface is provided on the second tooth surface. The first guide surface extends in a direction from the bottom of the first tooth groove to the outside of the first tooth groove and is inclined upward. A second guide surface matching the first guide surface is provided on the third tooth surface. The first guide surface and the second guide surface cooperate to guide the second anti-fall rack to move upward in the vertical direction, so that the second anti-fall rack can rotate in a direction away from the first anti-fall rack.

[0018] Optionally, the fall arrestor further includes a detection element for detecting the attitude of the second fall arrestor rack.

[0019] Optionally, the detection device includes any one of a limit switch, a laser sensor, and an angle sensor.

[0020] Secondly, embodiments of this application disclose a holding device, comprising:

[0021] A gripping assembly is movably mounted on the frame in a vertical direction and is used to grip a workpiece.

[0022] A lifting drive component, which is connected to the holding assembly, is used to drive the holding assembly to reciprocate along the vertical direction;

[0023] In any one of the first aspects, the counterweight is connected to the holding assembly via the counterweight cable so that the counterweight can apply an upward force to the holding assembly.

[0024] Optionally, there are two counterweights, which are located on both sides of the frame along the second horizontal direction. Each counterweight is connected to the holding assembly through multiple counterweight cables, and each counterweight cable is provided with a corresponding locking assembly.

[0025] Compared with the prior art, this application has at least the following beneficial effects:

[0026] In this application, by setting a rotation drive component, a first anti-fall rack extending vertically, and a second anti-fall rack, the first anti-fall rack is set on the frame, and the second anti-fall rack is rotatably set on the counterweight. The rotation drive component is used to drive the second anti-fall rack to rotate, so that when the counterweight cable breaks, the second anti-fall rack can engage with the first anti-fall rack to lock the second anti-fall rack, thereby locking the second anti-fall rack and then locking the counterweight. This prevents the counterweight from falling freely when the counterweight cable breaks, effectively avoiding accidents such as frame deformation and damage caused by the free fall of the counterweight, and improving the safety of using equipment equipped with this anti-fall device, such as effectively improving the safety of holding equipment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of a fall protection device provided in an embodiment of this application;

[0029] Figure 2 yes Figure 1 Enlarged view of position A in the middle;

[0030] Figure 3 This is a perspective view of a fall protection device provided in an embodiment of this application after it has been rotated at a certain angle;

[0031] Figure 4 This is a perspective view of a combination of a locking component, a rotation drive component, a retaining component, and a detection component provided in an embodiment of this application;

[0032] Figure 5 This is a perspective view of a combination of a locking component, a rotation drive component, a retaining component, and a detection component provided in an embodiment of this application after being rotated by a certain angle;

[0033] Figure 6 This is a perspective view of a second anti-fall rack meshing with a first anti-fall rack, as provided in an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Holding component; 11-Holding structure; 12-Lifting seat

[0036] 2-Counterweights;

[0037] 3-Counterweight cable;

[0038] 4- Lifting drive components;

[0039] 5-Locking assembly; 51-First anti-fall rack; 511-First rack body; 512-First tooth groove; 5121-First locking plane; 5122-First guide surface; 52-Second anti-fall rack; 521-Second rack body; 522-Second tooth groove; 5221-Second locking plane; 5222-Second guide surface; 53-Mounting base; 54-Rotating shaft; 55-Rotating connector; 56-Hanging rope connector; 57-Lifting ring; 58-Rotating drive component; 581-Elastic component; 59-Retaining component; 591-Hanging rope;

[0040] 8-Inspection Items;

[0041] 9-Rack;

[0042] 10 - Fall protection device;

[0043] 20-Holding device. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0046] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0047] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0048] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0049] In view of the problems described in the background art, this application discloses a fall prevention device and a holding device, which can effectively prevent the counterweight from falling freely when the chain breaks unexpectedly, thus avoiding accidents caused by the free fall of the counterweight.

[0050] The technical solution of this application will be described in detail below with reference to specific embodiments and accompanying drawings.

[0051] This application provides a fall protection device, such as... Figures 1-4 As shown, the device includes a frame 9, a counterweight 2, a counterweight cable 3, and a locking assembly 5. The counterweight 2 is vertically movable on the frame 9. One end of the counterweight cable 3 is connected to the counterweight 2. The locking assembly 5 includes a first anti-fall rack 51, a second anti-fall rack 52, a rotation drive 58, and a retainer 59. Both the first anti-fall rack 51 and the second anti-fall rack 52 extend vertically. The first anti-fall rack 51 is mounted on the frame 9, and the second anti-fall rack 52 is rotatably mounted on the counterweight 2. The rotation drive 58 drives the second anti-fall rack 52 to rotate so that when the counterweight cable 3 breaks, the second anti-fall rack 52 can engage with the first anti-fall rack 51 to lock the second anti-fall rack 52. The retainer 59 provides a force to the second anti-fall rack 52 to rotate away from the first anti-fall rack 51 when the counterweight cable 3 is in a normal state.

[0052] In this embodiment, the counterweight 2 is vertically movable on the frame 9. One end of the counterweight cable 3 is connected to the counterweight 2, and the other end is connected to the holding assembly 1. When the counterweight 2 applies an upward force to the holding assembly 1 via the counterweight cable 3, the load on the holding assembly 1 can be partially offset by the counterweight 2 when holding the workpiece, effectively reducing the load on the lifting drive component 4. Of course, in other embodiments, the other end of the counterweight cable 3 can also be directly connected to the workpiece to be lifted. In this case, the counterweight 2 can also offset part of the load, thereby reducing the load on the lifting drive component 4.

[0053] By setting a rotation drive 58, a first anti-fall rack 51 extending vertically, and a second anti-fall rack 52, the first anti-fall rack 51 is mounted on the frame 9, and the second anti-fall rack 52 is rotatably mounted on the counterweight 2. The rotation drive 58 is used to drive the second anti-fall rack 52 to rotate, so that when the counterweight cable 3 breaks, the second anti-fall rack 52 can engage with the first anti-fall rack 51 to lock the second anti-fall rack 52. That is, when the counterweight cable 3 breaks, the rotation drive 58 drives the second anti-fall rack 52 to move closer to the first anti-fall rack. The rotation of rack 51 causes the first anti-fall rack 51 to mesh with the second anti-fall rack 52, thereby locking the second anti-fall rack 52 and locking the counterweight 2. This prevents the counterweight 2 from falling freely when the counterweight cable 3 breaks, effectively avoiding accidents such as deformation or damage to the frame 9 caused by the free fall of the counterweight 2. This improves the safety of equipment equipped with the anti-fall device 10. For example, when the holding equipment is equipped with the anti-fall device 10, the safety of the holding equipment can be effectively improved.

[0054] The retainer 59 is used to provide a force to the second anti-fall rack 52 to rotate away from the first anti-fall rack 51 when the counterweight cable 3 is in normal condition. After the counterweight cable 3 is repaired, the retainer 59 can drive the second anti-fall rack 52 to rotate away from the first anti-fall rack 51, thereby releasing the first anti-fall rack 51 from locking the second anti-fall rack 52, allowing the counterweight 2 to move vertically, so as to offset part of the load on the holding assembly 1 when it moves vertically.

[0055] The aforementioned retainer 59 can also be used to provide a force for the second anti-fall rack 52 to maintain a preset gap between it and the first anti-fall rack 51 in the horizontal direction, which can effectively prevent the counterweight 2 from being unable to move in the vertical direction due to the second anti-fall rack 52 accidentally engaging with the first anti-fall rack 51.

[0056] It should be explained that the aforementioned second anti-fall rack 52 having a preset gap with the first anti-fall rack 51 in the horizontal direction means that there is a gap between the second anti-fall rack 52 and the first anti-fall rack 51 in the horizontal direction, and the size of the gap is such that when the second anti-fall rack 52 has not rotated a certain angle toward the first anti-fall rack, the second anti-fall rack 52 can move in the vertical direction without contacting the first anti-fall rack 51, and after the second anti-fall rack 52 rotates a certain angle, it can mesh with the first anti-fall rack 51.

[0057] The counterweight cable 3 can be any of the following: chain, wire rope, cable, strap, etc., and is not limited to any one of them.

[0058] The second anti-fall rack 52 described above can be rotatably mounted on the counterweight 2 in various ways. For example, the second anti-fall rack 52 can be rotatably mounted on the counterweight 2 via a hinge, or it can be rotatably mounted on the counterweight 2 via a pivot 54, or it can be rotatably mounted on the counterweight 2 via a universal ball joint. No limitation is imposed.

[0059] Optionally, such as Figure 3 and Figure 4 As shown, when the second anti-fall rack 52 is rotatably mounted on the counterweight 2 via the rotating shaft 54, the locking assembly 5 may also include a mounting base 53, which is mounted on the counterweight 2, and the second anti-fall rack 52 is rotatably connected to the mounting base 53 via the rotating shaft 54.

[0060] This allows the second anti-fall rack 52 to rotate more smoothly.

[0061] The two ends of the rotating shaft 54 ​​can be rotatably connected to the mounting base 53 respectively, and the part of the rotating shaft 54 ​​located between the two ends can be fixedly connected to the second anti-fall rack 52. Alternatively, the two ends of the rotating shaft 54 ​​can be fixedly connected to the mounting base 53 respectively, and the part of the rotating shaft 54 ​​located between the two ends can be rotatably connected to the second anti-fall rack 52. This is not limited here.

[0062] In addition, the locking assembly 5 may also include a rotating connector 55, which is rotatably connected to the mounting base 53 via a rotating shaft 54. The second anti-fall rack 52 is detachably disposed on the side of the rotating connector 55 facing the first anti-fall rack 51, so as to facilitate the disassembly and assembly of the second anti-fall rack 52 and the rotating connector 55. When the second anti-fall rack 52 needs to be replaced, it can be removed from the rotating connector 55 without disassembling the rotating shaft 54, mounting base 53 and other structural components, which facilitates the maintenance and replacement of the second anti-fall rack 52.

[0063] The second anti-fall rack 52 can be connected to the rotating connector 55 by a threaded connection, or by a slot, buckle or other structure, or by adhesive. No limitation is made here.

[0064] The aforementioned rotation drive 58 can be implemented in various ways. In one possible implementation, the rotation drive 58 may include a first magnetic element and a second magnetic element. The first magnetic element is disposed on the first anti-fall rack 51, and the second magnetic element is disposed on the second anti-fall rack 52. The first magnetic element and the second magnetic element can generate an attractive magnetic force, so that when the counterweight cable 3 breaks, the magnetic force between the first magnetic element and the second magnetic element can attract the second magnetic element to rotate towards the first magnetic element, thereby driving the second anti-fall rack 52 to rotate towards the first anti-fall rack 51.

[0065] The first magnetic component can be made of iron, steel, etc., and can extend vertically. The second magnetic component can be a permanent magnet.

[0066] In another implementation of the rotation drive 58, such as Figure 4 and Figure 5 As shown, the rotation drive 58 may include an elastic element 581, the first end of which is fixedly disposed relative to the second anti-fall rack 52, and the second end of which is connected to the mounting base 53.

[0067] Therefore, the elastic element 581 can provide the second anti-fall rack 52 with a spring force to rotate toward the first anti-fall rack 51, so that when the counterweight cable 3 breaks, the second anti-fall rack 52 can quickly turn toward the first anti-fall rack 51, thereby enabling the second anti-fall rack 52 and the first anti-fall rack 51 to engage more promptly, and thus enabling the counterweight 2 to be locked more promptly.

[0068] Among them, the elastic element 581 can be any of the tension spring, rubber column, rubber composite spring, and torsion spring, and there is no limitation. All of the above implementation methods of the elastic element 581 can make the elastic element 581 have a relatively stable elastic force, so that when the counterweight cable 3 breaks, the rotation of the second anti-fall rack 52 toward the first anti-fall rack 51 can have a good effect.

[0069] For example, the elastic element 581 may include a tension spring, which allows for the installation of the elastic element 581 with a small space between the second anti-fall rack 52 and the mounting base 53, facilitating the compact layout of the anti-fall device 10. The tension spring can provide a predictable elastic force to the second anti-fall rack 52, so that the rotation angle of the second anti-fall rack 52 can be more precise, thereby improving the locking effect on the counterweight 2.

[0070] When installing the tension spring, for example, in the vertical direction, the elastic element 581 may be located below the rotating shaft. Specifically, in the vertical direction, the second end of the elastic element 581 is positioned lower than the first end of the elastic element 581. In the horizontal direction, the second end of the elastic element 581 is positioned closer to the first anti-fall rack 51 than the first end of the elastic element 581, so that the elastic element 581 can provide a larger force for the second anti-fall rack 52 to rotate toward the first anti-fall rack 51.

[0071] The aforementioned retaining member 59 can be implemented in various ways. For example, the retaining member 59 may include a suspension rope 591, or it may include a chain, or it may include a wire rope. No limitation is made here.

[0072] like Figure 2 and Figure 4 As shown, when the retainer 59 includes the suspension rope 591, the suspension rope 591 is in a taut state when the counterweight cable 3 is not broken. The first end of the suspension rope 591 is fixedly disposed relative to the second anti-fall rack 52, and the second end of the suspension rope 591 passes around the side of the rotating shaft 54 ​​away from the first anti-fall rack 51 and is connected to the counterweight cable 3.

[0073] Therefore, when the counterweight cable 3 is not broken, the suspension rope 591 can provide a counterclockwise force to the second anti-fall rack 52, so that under the action of the tension of the suspension rope 591 and the weight of the second anti-fall rack 52, the second anti-fall rack 52 is kept in a state with a preset gap between it and the first anti-fall rack 51 in the horizontal direction. Moreover, the suspension rope 591 is relatively soft and can move and deform with the counterweight cable 3 while remaining taut.

[0074] For example, when the counterweight cable 3 breaks unexpectedly, it falls downwards under its own weight. Since the second end of the suspension rope 591 is connected to the counterweight cable 3, the suspension rope 591 can fall downwards along with the counterweight cable 3. That is, the suspension rope 591 becomes slack and no longer provides a counterclockwise force to the second anti-fall rack 52. At this time, the second anti-fall rack 52 rotates clockwise around the pivot 54 towards the first anti-fall rack 51 under the action of the elastic element 581 until it engages with the first anti-fall rack 51 to lock the counterweight 2, effectively preventing the counterweight 2 from falling freely due to the breakage of the counterweight cable 3. When the counterweight cable 3 is repaired, the suspension rope 591 is tightened, and in the process of being tightened, it overcomes the elastic force of the spring, causing the second anti-fall rack 52 to rotate counterclockwise away from the first anti-fall rack 51, so as to release the first anti-fall rack from locking the second anti-fall rack 52, allowing the counterweight 2 to move in the vertical direction, making the operation convenient and quick.

[0075] Optionally, such as Figure 4 and Figure 6As shown, the locking assembly 5 also includes a rope connector 56, which is fixedly connected to the second anti-fall rack 52. The rope connector 56 is set vertically below the rotating shaft 54, and the first end of the rope 591 is connected to the rope connector 56.

[0076] Therefore, when the counterweight cable 3 breaks, the suspension rope connector 56 can drive the second anti-fall rack 52 to rotate clockwise around the pivot 54 under its own weight, so that the second anti-fall rack 52 can engage with the first anti-fall rack 51 more quickly, thus better preventing the counterweight 2 from falling freely.

[0077] The first end of the suspension rope 591 can be connected to the side of the suspension rope connector 56 opposite to the second anti-fall rack 52, so as to facilitate the connection between the first end of the suspension rope 591 and the suspension rope connector 56.

[0078] A lifting ring 57 can be provided on the lifting rope connector 56, and the first end of the lifting rope 591 can be connected to the lifting ring 57, which greatly facilitates the installation of the lifting rope 591.

[0079] In addition, when the locking assembly 5 also includes a rotating connector 55, the sling connector 56 can be threadedly connected to the side of the rotating connector 55 away from the second anti-fall rack 52 via a threaded pair, which facilitates the assembly and disassembly of the sling connector 56 and the rotating connector 55.

[0080] In some embodiments, such as Figure 6 As shown, the first anti-fall rack 51 includes a first rack body 511 extending vertically and a plurality of first tooth grooves 512 arranged vertically on the first rack body 511. Each first tooth groove 512 has a first tooth surface and a second tooth surface facing each other vertically. The first tooth surface within the same first tooth groove 512 is located below the second tooth surface. A first locking plane 5121 is provided on the first tooth surface. The first locking plane 5121 is along a first horizontal direction (e.g., ...). Figure 6 (as shown in x1) extends, or the first locking plane 5121 extends along the direction from the bottom of the first tooth groove 512 to the outside of the first tooth groove 512 (e.g.) Figure 6 The second anti-fall rack 52 extends and tilts upward in the direction shown in x2; the second anti-fall rack 52 includes a second rack body 521 extending in the vertical direction and a plurality of second tooth grooves 522 arranged in the vertical direction on the second rack body 521. The second tooth groove 522 has a third tooth surface and a fourth tooth surface opposite to each other in the vertical direction. The third tooth surface in the same second tooth groove 522 is located below the fourth tooth surface. A second locking plane 5221 matching the first locking plane 5121 is provided on the fourth tooth surface. When the second anti-fall rack 52 meshes with the first anti-fall rack 51, the second locking plane 5221 abuts against the first locking plane 5121.

[0081] Therefore, when the counterweight cable 3 breaks and the second anti-fall rack 52 engages with the first anti-fall rack 51, the first locking plane 5121 abuts against the second locking plane 5221, so that the second anti-fall rack 52 can be locked onto the first anti-fall rack 51, and the locking of the second anti-fall rack 52 can be relatively stable, so that the counterweight 2 can be locked relatively stably when the counterweight cable 3 breaks.

[0082] In addition, when the second anti-fall rack 52 engages with the first anti-fall rack 51, the multiple second locking surfaces 5221 in the multiple second tooth grooves 522 can abut against the multiple first locking surfaces 5121 one by one, which makes the locking of the second anti-fall rack 52 more stable. In the event of the breakage of the counterweight cable 3, the counterweight 2 can be locked more securely, further preventing the counterweight 2 from falling freely due to the breakage of the counterweight cable 3, thus making the use of the anti-fall device 10 safer.

[0083] The first locking plane 5121 extending along the first horizontal direction, or the first locking plane 5121 extending upward in the direction from the bottom of the first tooth groove 512 to the outside of the first tooth groove 512 and tilting upward, means that the first locking plane 5121 can be a horizontal plane or a plane that extends obliquely upward in the direction from the bottom of the first tooth groove 512 to the outside of the first tooth groove, and there is no limitation here.

[0084] It is understandable that the outer side of the groove of the first toothed groove 512 refers to the side located outside the first anti-fall rack 51 and on the side where the tooth tip of the first anti-fall rack 51 is located, such as... Figure 6 As shown, the direction in which the bottom of the first tooth groove 512 points to the outside of the first tooth groove 512 can be parallel to the direction from the first anti-fall rack 51 to the second anti-fall rack 52.

[0085] The number of first tooth grooves 512 can be greater than the number of second tooth grooves 522, which allows the length of the second rack body 521 to be shorter. This reduces the weight of the locking assembly 5 and also allows the rotation space of the second anti-fall rack 52 to be smaller, which is conducive to the compact layout of the locking assembly 5.

[0086] In addition, a plurality of first tooth grooves 512 are evenly spaced along the vertical direction on the first rack body 511; a plurality of second tooth grooves 522 are evenly spaced along the vertical direction on the second rack body 521, and the spacing between two adjacent first tooth grooves 512 and the spacing between two adjacent second tooth grooves 522 can be the same.

[0087] Optionally, such as Figure 6As shown, a first guide surface 5122 is provided on the second tooth surface. The first guide surface 5122 extends in the direction from the bottom of the first tooth groove 512 to the outside of the first tooth groove 512 and is inclined upward. A second guide surface 5222 matching the first guide surface 5122 is provided on the third tooth surface. The first guide surface 5122 and the second guide surface 5222 cooperate to guide the second anti-fall rack 52 to move upward in the vertical direction, so that the second anti-fall rack 52 can rotate away from the first anti-fall rack 51.

[0088] Therefore, when it is necessary to separate the second anti-fall rack 52 from the first anti-fall rack 51 to release the locking of the second anti-fall rack 52, the holding component 1 can be moved vertically to pull the locking component 5 and the counterweight upward, so that the first locking plane 5121 and the second locking plane 5221 are separated. This effectively prevents the second anti-fall rack 52 from interfering with the first locking plane 5121 during the rotation away from the first anti-fall rack 51. As a result, the second anti-fall rack 52 can be smoothly rotated to a position with a preset gap between it and the first anti-fall rack 51 in the horizontal direction, so that the counterweight 2 can move normally up and down in the vertical direction.

[0089] The first guide surface 5122 can be either a guide plane or a guide arc surface, and is not limited here. Similarly, the second guide surface 5222 can be either a guide plane or a guide arc surface, and is not limited here either.

[0090] For example, such as Figure 6 As shown, when the first guide surface 5122 is a guide plane, the guide plane extends obliquely upward along the direction from the bottom of the first tooth groove 512 to the outside of the first tooth groove 512, which makes the structure of the first guide surface 5122 simple and easy to implement.

[0091] In other embodiments, such as Figure 4 and Figure 5 As shown, the fall arrestor 10 also includes a detection element 8 for detecting the status of the second fall arrestor rack 52.

[0092] Therefore, when the counterweight cable 3 breaks, the status of the second anti-fall rack 52 can be detected by the detection component 8 to determine whether the counterweight cable 3 has broken, and the lifting drive component 4 can be controlled in time to stop the drive of the holding component 1 to move in the vertical direction. At the same time, a warning can be issued in a relatively timely manner to inform the staff to repair the counterweight cable 3 in time.

[0093] The detection component 8 may include any one of the limit switch, laser sensor and angle sensor, and there is no limitation on it. All of them can have high detection accuracy of the state of the second anti-fall rack 52, so that a warning can be issued in time when the counterweight cable 3 breaks.

[0094] In addition, the fall arrestor may also include a controller, which is electrically connected to the detection element 8 and the holding assembly 1. After the detection element 8 detects the status signal of the second fall arrestor rack 52, the detection element 8 can transmit the signal to the controller. Upon receiving the signal, the controller can determine in a timely manner whether the counterweight cable 3 has broken, and control the lifting drive 4 to stop driving the holding assembly 1 to move in the vertical direction. At the same time, it can also issue a warning in a timely manner to inform the staff to repair the counterweight cable 3 in time.

[0095] The controller can be any of the following: PLC (Programmable Logic Controller), PAC (Programmable Automation Controller), microcontroller, etc., without any limitation.

[0096] For example, when the detection element 8 includes a limit switch, the limit switch can be electrically connected to the control circuit of the motor so that when the counterweight cable 3 breaks, the second anti-fall rack 52 turns to the first anti-fall rack 51 and rotates a certain angle, the contact in the limit switch can separate from the contact seat, causing the control circuit of the motor to be open-circuited and the motor to stop working. At the same time, the controller receives the signal of the circuit being open and can issue a warning to inform the staff.

[0097] When the detection component 8 includes a laser sensor, after the counterweight cable 3 breaks and the second anti-fall rack 52 turns to the first anti-fall rack 51 and rotates a certain angle, the laser sensor can no longer detect the second anti-fall rack 52. Then, the laser sensor transmits the signal that it cannot detect the second anti-fall rack 52 to the controller. The controller receives the signal, controls the motor to stop working, and can also issue a warning.

[0098] When the detection component 8 includes an angle sensor, after the counterweight cable 3 breaks and the second anti-fall rack 52 turns towards the first anti-fall rack 51 and rotates a certain angle, the angle sensor detects that the second anti-fall rack 52 has rotated towards the first anti-fall rack 51 by that certain angle, and can transmit the signal to the controller. The controller receives the signal, controls the motor to stop working, and can also issue a warning to inform the staff.

[0099] This application also discloses a holding device, such as... Figures 1-3As shown, the holding device includes a holding component 1, a lifting drive 4, and a fall protection device according to any of the above embodiments. The holding component 1 is vertically movably mounted on the frame 9 and is used to hold the workpiece. The lifting drive 4 is connected to the holding component 1 and is used to drive the holding component 1 to reciprocate vertically. The counterweight 2 of the fall protection device 10 according to any of the above embodiments is connected to the holding component 1 through a counterweight cable 3 so that the counterweight 2 can apply an upward force to the holding component 1.

[0100] In this embodiment, the holding component 1 is vertically mounted on the frame 9. The holding component 1 is used to hold the workpiece. The workpiece can be lifted, flipped or other operations can be performed by holding the workpiece with the holding component 1.

[0101] Since the anti-fall device 10 in the holding device 20 is the same as the anti-fall device 10 described in any of the above embodiments, when the counterweight cable 3 in the holding device 20 breaks, the second anti-fall rack 52 can rotate under the drive of the rotation drive member 58 to mesh with the first anti-fall rack 51, thereby locking the second anti-fall rack 52 and locking the counterweight 2. This prevents the counterweight 2 from falling freely when the counterweight cable 3 breaks, effectively avoiding accidents such as deformation and damage of the frame 9 caused by the free fall of the counterweight 2, and improving the safety of using the holding device 20.

[0102] Furthermore, the fall protection device 10 in the holding device 20 is the fall protection device 10 described in any of the above embodiments. Therefore, the fall protection device 10 in the holding device 20 has the same beneficial effects as the fall protection device 10 described in any of the above embodiments. Since the fall protection device 10 has been described in detail in the above embodiments, it will not be repeated here.

[0103] The lifting drive component 4 can be any of the following: a motor, an electric cylinder, a pneumatic cylinder, etc., and there is no limitation on it.

[0104] For example, when the lifting drive component 4 includes a motor, the motor is mounted on the frame 9. The motor can be connected to the holding component 1 via a lead screw and nut. That is, the output shaft of the motor can be connected to the lead screw, which extends in the vertical direction. The nut is threadedly connected to the lead screw and connected to the holding component 1. After the motor is started, the lead screw rotates, allowing the nut to carry the holding component 1 to move along the lead screw, so that the holding component 1 can hold the workpiece and lift it.

[0105] Optionally, such as Figure 1As shown, the holding assembly 1 may include a holding structure 11 and a lifting seat 12. The lifting seat 12 is movably mounted on the frame 9 in the vertical direction. The holding structure 11 is located on the side of the lifting seat 12 away from the frame 9. The lifting drive 4 is connected to the lifting seat 12 and is used to drive the lifting seat 12 to move relative to the frame 9 in the vertical direction. The counterweight 2 can be connected to the lifting seat 12 through the counterweight cable 3.

[0106] Therefore, the holding structure 11 is set on the lifting seat 12, and the counterweight 2 is connected to the lifting seat 12 through the counterweight cable 3. Compared with the holding structure 11 being directly moved and set on the frame 9 in the vertical direction, and the counterweight 2 being directly connected to the holding structure 11 through the counterweight cable 3, the holding structure 11 can be simpler and easier to manufacture.

[0107] The holding structure 11 may include at least one of a clamping block, a gripper, an adsorption disk, etc., and is not limited thereto.

[0108] Optionally, such as Figures 1-3 As shown, there are two counterweights 2, and the two counterweights 2 are arranged along the second horizontal direction (e.g., Figure 1 The directions shown in x3 are located on both sides of the frame 9. Each counterweight 2 is connected to the holding assembly 1 through multiple counterweight cables 3, and each counterweight cable 3 is provided with a corresponding locking assembly 5.

[0109] This allows the two counterweights 2 to offset more of the load on the holding assembly 1, further reducing the load on the lifting drive 4.

[0110] Each counterweight 2 is connected to the holding assembly 1 via multiple counterweight cables 3. Each counterweight cable 3 is equipped with a corresponding locking assembly 5. If any counterweight cable 3 breaks, the corresponding second anti-fall rack 52 can engage with the first anti-fall rack 51 to lock the corresponding counterweight 2, further preventing the counterweight 2 from falling freely when the counterweight cable 3 breaks, thus making the holding device 20 safer to use.

[0111] When the holding component 1 may include a holding structure 11 and a lifting seat 12, the two counterweights 2 may be connected to the lifting seat 12 by corresponding counterweight cables 3.

[0112] Each of the aforementioned counterweights 2 can be connected to the holding assembly 1 via multiple counterweight cables 3. Each counterweight cable 3 is provided with a corresponding locking assembly 5. Specifically, each counterweight cable 3 can be provided with a locking assembly 5, a rotation drive 58, and a retaining member 59, so that when each counterweight cable 3 breaks, the corresponding locking assembly 5 and rotation drive 58 can prevent the counterweight 2 from falling freely. When the counterweight cable 3 does not break, the corresponding retaining member 59 can hold the second anti-fall rack 52 at a position with a preset gap between it and the first anti-fall rack 51.

[0113] Furthermore, the number of counterweight cables 3 connecting each counterweight 2 to the holding assembly 1 can be two, three, or more, and is not limited here. For example, each counterweight 2 can be connected to the holding assembly 1 through two counterweight cables 3, so that the force on each counterweight cable 3 can be appropriate and will not occupy too much space.

[0114] In summary, when the holding device 20 holds the workpiece through the holding assembly 1 to perform operations such as lifting and flipping, and the counterweight cable 3 unexpectedly breaks, the retaining member 59 (such as a pull rope) loosens, releasing the tension on the second anti-fall rack 52. Subsequently, the rotating drive member 58 drives the second anti-fall rack 52 to rotate. For example, the elastic member drives the second anti-fall rack 52 to rotate, so that the second anti-fall rack 52 engages with the first anti-fall rack 51, locking the second anti-fall rack 52, thereby locking the counterweight 2 and effectively preventing the counterweight 2 from breaking due to the counterweight cable. 3. In the event of a breakage, the device will fall freely, improving the safety of the holding device 20. Specifically, when the second anti-fall rack 52 rotates to engage with the first anti-fall rack 51, the detection element 8 detects a change in the posture of the second anti-fall rack 52. If the limit switch detects this change in posture, it can transmit the signal to the controller. The controller can then stop the lifting drive 4 to halt the movement of the holding assembly 1. Simultaneously, a warning signal can be issued to inform the operator that the counterweight cable 3 may have broken. After repairing or replacing the counterweight cable 3, the retaining element 59 is tightened. During this tightening process, the second anti-fall rack 52 is rotated away from the first anti-fall rack 51 to release the first anti-fall rack from locking the second anti-fall rack 52. This allows the counterweight 2 to move vertically again, and the holding assembly 1 can move normally vertically for lifting, flipping, and other operations on the workpiece.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fall arrestor (10), characterized in that, include: Rack (9); Counterweight (2), which is vertically movable and mounted on the frame (9); A counterweight cable (3), one end of which is connected to the counterweight (2); The locking assembly (5) includes a first anti-fall rack (51), a second anti-fall rack (52), a rotation drive (58), and a retainer (59). The first anti-fall rack (51) extends along the vertical direction and is disposed on the frame (9). The second anti-fall rack (52) is rotatably disposed on the counterweight (2). The rotation drive (58) is used to drive the second anti-fall rack (52) to rotate so that the second anti-fall rack (52) can engage with the first anti-fall rack (51) when the counterweight cable (3) breaks. The retainer (59) is used to provide a force to the second anti-fall rack (52) to rotate away from the first anti-fall rack (51) when the counterweight cable (3) is in a normal state.

2. The fall arrestor (10) according to claim 1, characterized in that, The locking assembly (5) further includes a mounting base (53), which is disposed on the counterweight (2), and the second anti-fall rack (52) is rotatably connected to the mounting base (53) via a rotating shaft (54).

3. The fall arrestor (10) according to claim 2, characterized in that, The rotation drive (58) includes an elastic element (581), the first end of which is fixedly connected to the second anti-fall rack (52), and the second end of which is connected to the mounting base (53).

4. The fall arrestor (10) according to claim 3, characterized in that, The elastic element (581) includes any one of a tension spring, a rubber column, or a rubber composite spring.

5. The fall arrestor (10) according to claim 2, characterized in that, The retaining member (59) includes a suspension rope (591) and a suspension rope connector (56). The suspension rope connector (56) is fixedly connected to the second anti-fall rack (52). The suspension rope (591) is in a taut state when the counterweight cable (3) is not broken. The first end of the suspension rope (591) is connected to the suspension rope connector (56), and the second end of the suspension rope (591) passes around the rotating shaft (54) on the side opposite to the first anti-fall rack (51) and is connected to the counterweight cable (3).

6. The fall arrestor (10) according to any one of claims 1-5, characterized in that, The first anti-fall rack (51) includes a first rack body (511) extending along the vertical direction and a plurality of first tooth grooves (512) arranged on the first rack body (511) along the vertical direction. The first tooth groove (512) has a first tooth surface and a second tooth surface opposite to each other along the vertical direction. The first tooth surface in the same first tooth groove (512) is located below the second tooth surface. A first locking plane (5121) is provided on the first tooth surface. The first locking plane (5121) extends along a first horizontal direction or extends along a direction from the bottom of the first tooth groove (512) to the outside of the first tooth groove (512) and is inclined upward. The second anti-fall rack (52) includes a second rack body (521) extending along the vertical direction and a plurality of second tooth grooves (522) arranged along the vertical direction on the second rack body (521). The second tooth groove (522) has a third tooth surface and a fourth tooth surface opposite to each other along the vertical direction. The third tooth surface in the same second tooth groove (522) is located below the fourth tooth surface. A second locking plane (5221) matching the first locking plane (5121) is provided on the fourth tooth surface. When the second anti-fall rack (52) meshes with the first anti-fall rack (51), the second locking plane (5221) abuts against the first locking plane (5121).

7. The fall arrestor (10) according to any one of claims 1-5, characterized in that, The fall arrestor (10) also includes a detection element (8) for detecting the attitude of the second fall arrestor rack (52).

8. The fall arrestor (10) according to claim 7, characterized in that, The detection component (8) includes any one of a limit switch, a laser sensor, and an angle sensor.

9. A holding device (20), characterized in that, include: A holding component (1) is movably disposed on the frame (9) in a vertical direction, and the holding component (1) is used to hold the workpiece; A lifting drive (4) is connected to the holding assembly (1) and is used to drive the holding assembly (1) to reciprocate along the vertical direction; The fall arrestor (10) according to any one of claims 1-8, wherein the counterweight (2) is connected to the holding assembly (1) via the counterweight cable (3) so that the counterweight (2) can apply an upward force to the holding assembly (1).

10. The holding device (20) according to claim 9, characterized in that, There are two counterweights (2), and the two counterweights (2) are located on both sides of the frame (9) along the second horizontal direction. Each counterweight (2) is connected to the holding assembly (1) through multiple counterweight cables (3), and each counterweight cable (3) is provided with a corresponding locking assembly (5).

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