Anti-falling device and lifting equipment

Abstract

The invention relates to the technical field of lifting equipment, and provides an anti-falling device and lifting equipment, a containing cavity is limited in a braking assembly, the braking assembly comprises two braking parts and a braking flywheel which are oppositely arranged, one braking part is suitable for being installed on the lifting equipment, and the other braking part is suitable for being installed on the lifting equipment. The other brake component is connected with one brake component through the adjusting component, each brake component is kept fixed relative to the transmission component, and the brake flywheel is located between the two brake components. The anti-falling assembly is located in the containing cavity and comprises a fixed base body, a centrifugal flail block and an elastic piece, the fixed base body is fixedly connected to the transmission component and suitable for rotating along with the transmission component, the centrifugal flail block is rotatably arranged on the fixed base body through the rotating piece, and the elastic piece is arranged on the rotating piece. According to the invention, a slow descending function is added, so that the impact force in the stall falling process of the lifting equipment can be reduced, and the operation safety of the lifting equipment is improved; and an automatic recovery function after anti-falling locking can be realized, and easy unlocking can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to an anti-falling device and lifting equipment. Background Art

[0002] In the wind power and construction industries, in order to ensure the safety of workers working at heights, a reliable anti-fall device must be installed on the lifting equipment used for high-altitude operations. In the related art, when the anti-fall device is performing anti-fall protection, the impact force during the stall and fall of the lifting equipment is relatively large, resulting in certain safety hazards in the operation of the lifting equipment. In addition, after the anti-fall protection, the anti-fall function of the anti-fall device needs to be manually restored, which is inconvenient to operate. Summary of the invention

[0003] The first aspect of the present invention provides an anti-falling device to solve the above-mentioned technical defects in the prior art. The anti-falling device not only has an additional slow descent function, which can reduce the impact force during the stall and fall of the lifting equipment and improve the safety of the operation of the lifting equipment; it can also realize the automatic recovery function after the anti-falling lock, and can achieve easy unlocking.

[0004] A second aspect of the present invention provides a lifting device.

[0005] A first aspect of the present invention provides an anti-falling device, comprising a transmission component, a brake assembly and an anti-falling assembly.

[0006] An accommodating cavity is limited inside the brake assembly, and the brake assembly includes two brake components and a brake flywheel arranged opposite to each other, wherein one of the brake components is suitable for being installed on the lifting device, and the other brake component is connected to one of the brake components through an adjusting component, and each of the brake components is kept fixed relative to the transmission component, and the brake flywheel is located between the two brake components arranged opposite to each other; The anti-falling component is located in the accommodating cavity, and the anti-falling component includes a fixed base, a centrifugal block and an elastic member. The fixed base is fixedly connected to the transmission component and is suitable for rotating with the transmission component. The centrifugal block is rotatably arranged on the fixed base through a rotating member, and is suitable for switching between a first state and a second state with changes in centrifugal force. The elastic member is arranged on the rotating member; in the first state, the centrifugal block overcomes the elastic force of the elastic member, abuts against the brake flywheel to drive the brake flywheel to rotate to achieve slow descent braking; in the second state, the centrifugal block is disengaged from the brake flywheel under the action of the elastic member.

[0007] According to the anti-falling device provided by the present invention, a trigger portion is provided on the inner circumferential surface of the brake flywheel, and the trigger portion extends from the inner circumferential surface of the brake flywheel along the radius of the brake flywheel toward the center of the brake flywheel; in the first state, the centrifugal throw block overcomes the elastic force of the elastic member and abuts against the trigger portion to drive the brake flywheel to rotate to achieve slow descent braking; The outer circumferential surface of the brake flywheel forms a contact surface, and the contact surface is restricted so that the brake flywheel can rotate along the circumferential direction of the fixed base; the side surface of the brake flywheel forms a friction surface, and the friction surface contacts the brake component.

[0008] According to the anti-falling device provided by the present invention, the brake assembly also includes a wheel assembly, which is arranged between two oppositely arranged brake components and connected to the two oppositely arranged brake components. The wheel assembly is arranged at intervals along the circumference of the brake flywheel, and the contact surface of the brake flywheel abuts against the wheel assembly.

[0009] According to the anti-falling device provided by the present invention, the wheel assembly comprises a guide wheel, a mounting shaft and a fastening component, the mounting shaft is fixedly connected to one of the braking components through the fastening component, and the other braking component is movably connected to the mounting shaft; The guide wheel is sleeved on the outer side of the installation shaft and is located between the two brake components that are arranged opposite to each other. The contact surface of the brake flywheel abuts against the guide wheel.

[0010] According to the anti-falling device provided by the present invention, an oil-free bearing is provided between the guide wheel and the installation shaft; and / or another of the braking components is movably connected to the installation shaft via a bearing sleeve.

[0011] According to the anti-falling device provided by the present invention, the braking component includes a mounting component, a brake disc and a friction plate. The brake disc is arranged on the transmission component through the mounting component. The brake disc is kept fixed relative to the transmission component. The friction plate is arranged on the side of the brake disc facing the brake flywheel. The friction plates are arranged at intervals along the circumference of the mounting component.

[0012] According to the anti-falling device provided by the present invention, the mounting component comprises a bearing and a bearing seat, and the bearing is arranged in a bearing chamber of the bearing seat; The brake disc is fixedly connected to the bearing seat, and the transmission component is passed through the bearing and has an interference fit with the bearing.

[0013] According to the anti-falling device provided by the present invention, the adjusting component includes an adjusting bolt, an adjusting nut and an adjusting gasket, the adjusting bolt is passed through two relatively arranged braking components, the adjusting nut is connected to the adjusting bolt, and the adjusting gasket is located between the corresponding braking component and the adjusting nut and the adjusting bolt.

[0014] According to the anti-falling device provided by the present invention, the adjusting component further comprises a disc spring module, the disc spring module is sleeved on the adjusting bolt, and the disc spring module is located between the corresponding braking component and the adjusting gasket.

[0015] According to the anti-falling device provided by the present invention, the fixed base comprises a body and a wheel portion, the wheel portion is relatively arranged on two sides of the body and defines a receiving groove with the body; The centrifugal block is rotatably arranged on the wheel portion through a rotating member, the main body of the elastic member is sleeved on the rotating member, one end of the elastic member abuts against the centrifugal block, and the other end of the elastic member abuts against the bottom wall of the accommodating groove; In the second state, the centrifugal block is separated from the brake flywheel under the action of the elastic member and is accommodated in the accommodating groove.

[0016] According to the anti-falling device provided by the present invention, the transmission component includes a transmission shaft and a transmission gear, and the transmission gear is arranged at at least one end of the transmission shaft; the fixed base is fixedly connected to the transmission shaft, and the braking component is rotationally matched with the transmission shaft.

[0017] The second aspect of the present invention provides a lifting device, including a lifting body, a driving device and any one of the anti-falling devices described, wherein the driving device and the anti-falling device are both arranged on the lifting body, and the transmission components in the anti-falling device and the driving device are both matched with the rack.

[0018] The anti-falling device provided by the present invention is provided with two braking components and a braking flywheel, so that one of the braking components is suitable for being installed on the lifting equipment, and the other braking component is connected to one of the braking components through an adjusting component, and each braking component is kept fixed relative to the transmission component, and the braking flywheel is located between the two braking components that are relatively arranged, that is, a braking flywheel is sandwiched between the two braking components, and the anti-falling component is arranged in a accommodating cavity limited by the braking component, so that the anti-falling component includes a fixed base, a centrifugal block and an elastic member, the fixed base is fixedly connected to the transmission component and is suitable for rotating with the transmission component, the centrifugal block is rotatably arranged on the fixed base through a rotating member, and is suitable for switching between a first state and a second state with changes in centrifugal force, and the elastic member is arranged on the rotating member; in the first state, the centrifugal block overcomes the elastic force of the elastic member, abuts against the braking flywheel to drive the braking flywheel to rotate to achieve slow descent braking; in the second state, the centrifugal block is separated from the braking flywheel under the action of the elastic member.

[0019] In this way, when the centrifugal throw weight is in the first state, it is equivalent to the anti-fall device having an additional slow-descent function, which can reduce the impact force during the stall and fall of the lifting equipment and improve the safety of the lifting equipment. When the centrifugal throw weight is in the second state, it is equivalent to the anti-fall device being able to realize the automatic recovery function after the anti-fall locking, which can be easily unlocked and improve the convenience of the anti-fall device.

[0020] The lifting equipment provided by the present invention has all the advantages as mentioned above because it includes the anti-falling device, and has strong environmental adaptability and broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the anti-falling device provided in an embodiment of the present invention.

[0023] Figure 2 It is a cross-sectional view of the anti-falling device provided by an embodiment of the present invention.

[0024] Figure 3 yes Figure 2 Sectional view along line AA.

[0025] Figure 4 It is a structural schematic diagram of a brake assembly in an anti-falling device provided in an embodiment of the present invention.

[0026] Figure 5 yes Figure 4 Schematic diagram of the structural explosion of the brake assembly shown.

[0027] Figure 6 It is a structural schematic diagram of the anti-falling assembly and the installation components in the anti-falling device provided in an embodiment of the present invention.

[0028] Figure 7 yes Figure 6 Sectional view along line BB.

[0029] Figure 8 yes Figure 6 Schematic diagram of the structural explosion of the fall prevention assembly and installation parts shown.

[0030] Fig. 9 yes Figure 6 Schematic diagram of the structure of the anti-fall component shown.

[0031] Reference numerals: 10. Transmission parts; 11. Transmission shaft; 12. Transmission gear; 20. brake assembly; 21. brake component; 211. mounting component; 2111. bearing; 2112. bearing seat; 212. brake disc; 213. friction plate; 22. brake flywheel; 221. triggering part; 222. contact surface; 223. friction surface; 30. Anti-falling assembly; 31. Fixed base; 311. Main body; 312. Wheel; 313. Accommodating groove; 32. Centrifugal throwing block; 33. Elastic member; 34. Rotating member; 40. Adjustment component; 41. Adjustment bolt; 42. Adjustment nut; 43. Adjustment gasket; 44. Disc spring module; 50. Wheel assembly; 51. Guide wheel; 52. Mounting shaft; 53. Fastening component; 54. Oil-free bearing; 55. Bearing sleeve. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0034] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Figure 1 It is a schematic diagram of the structure of the anti-falling device provided in an embodiment of the present invention. Figure 2 It is a front view of the anti-falling device provided by an embodiment of the present invention. Figure 3 yes Figure 2 Sectional view along line AA.

[0037] See also Figures 1 to 3 The embodiment of the present invention provides an anti-falling device, which can be applied to lifting equipment used for high-altitude operations such as tower elevators, industrial building lifting platforms, and material conveyors, and can improve the safety of the lifting equipment. The anti-falling device includes a transmission component 10, a brake assembly 20, and an anti-falling assembly 30.

[0038] The transmission component 10 includes a transmission shaft 11 and a transmission gear 12. The transmission gear 12 is arranged at at least one end of the transmission shaft 11, that is, the transmission gear 12 can be arranged at any end of the transmission shaft 11, and the transmission gear 12 can also be arranged at both ends of the transmission shaft 11. The transmission gear 12 is fixedly connected to the transmission shaft 11, and the transmission shaft 11 and the transmission gear 12 can rotate synchronously. Among them, the transmission gear 12 can be connected to the circumferential surface of the transmission shaft 11 through a spline, and can also be connected to the end of the transmission shaft 11 along the axial direction of the transmission shaft 11 through structures such as bolts, gaskets, and stoppers. The stopper is used to prevent the transmission gear 12 from escaping from the end of the transmission shaft 11. The transmission gear 12 can mesh with the rack on the guide ladder in the lifting system and can move along the extension direction of the rack.

[0039] The interior of the brake assembly 20 limits an accommodating cavity, the structural size of the accommodating cavity is adapted to the structure of the anti-fall assembly 30, and can accommodate the anti-fall assembly 30. The brake assembly 20 includes two brake components 21 and a brake flywheel 22 arranged opposite to each other, one of the brake components 21 is suitable for being installed on the lifting device, and the other brake component 21 is connected to one of the brake components 21 through an adjusting component 40, each brake component 21 is fixed relative to the transmission component 10, and the brake flywheel 22 is located between the two brake components 21 arranged opposite to each other.

[0040] The anti-falling component 30 is located in the accommodating chamber, and the anti-falling component 30 includes a fixed base 31, a centrifugal block 32 and an elastic member 33. The fixed base 31 is fixedly connected to the transmission component 10, and the fixed base 31 can rotate with the transmission component 10. The centrifugal block 32 is rotatably arranged on the fixed base 31 through a rotating member 34, and is suitable for switching between a first state and a second state according to changes in centrifugal force. The elastic member 33 is arranged on the rotating member 34; in the first state, the centrifugal block 32 overcomes the elastic force of the elastic member 33, abuts against the brake flywheel 22 to drive the brake flywheel 22 to rotate to achieve slow descent braking; in the second state, the centrifugal block 32 is separated from the brake flywheel 22 under the action of the elastic member 33.

[0041] It can be understood that the anti-falling device provided in the embodiment of the present invention is configured with two brake components 21 and a brake flywheel 22, so that one of the brake components 21 is suitable for being installed on the lifting equipment, and the other brake component 21 is connected to one of the brake components 21 through an adjusting component 40, each brake component 21 is fixed relative to the transmission component 10, and the brake flywheel 22 is located between the two brake components 21 arranged opposite to each other, that is, the brake flywheel 22 is sandwiched between the two brake components 21, and the anti-falling component 30 is arranged in the accommodating cavity restricted by the brake component 20, so that the anti-falling component 30 includes A fixed base 31, a centrifugal block 32 and an elastic member 33. The fixed base 31 is fixedly connected to the transmission component 10 and is suitable for rotating with the transmission component 10. The centrifugal block 32 is rotatably arranged on the fixed base 31 through a rotating member 34, and is suitable for switching between a first state and a second state according to changes in centrifugal force. The elastic member 33 is arranged on the rotating member 34. In the first state, the centrifugal block 32 overcomes the elastic force of the elastic member 33, abuts against the brake flywheel 22 to drive the brake flywheel 22 to rotate and realize slow descent braking. In the second state, the centrifugal block 32 is separated from the brake flywheel 22 under the action of the elastic member 33.

[0042] In this way, when the centrifugal throw weight 32 is in the first state, it is equivalent to the anti-fall device having an additional slow-down function, which can reduce the impact force during the stall and fall of the lifting equipment and improve the safety of the lifting equipment. When the centrifugal throw weight 32 is in the second state, it is equivalent to the anti-fall device being able to realize the automatic recovery function after the anti-fall locking, which can be easily unlocked and improve the convenience of the anti-fall device.

[0043] Figure 4 It is a structural schematic diagram of a brake assembly in an anti-falling device provided in an embodiment of the present invention. Figure 5 yes Figure 4 Schematic diagram of the structural explosion of the brake assembly shown.

[0044] See also Figure 4 and Figure 5In some embodiments of the present invention, a trigger portion 221 is provided on the inner circumferential surface of the brake flywheel 22, and the trigger portion 221 extends from the inner circumferential surface of the brake flywheel 22 along the radius of the brake flywheel 22 toward the center of the brake flywheel 22, that is, the trigger portion 221 protrudes from the inner circumferential surface of the brake flywheel 22; wherein, the brake flywheel 22 is made of wear-resistant material, and the trigger portion 221 can be a ratchet arranged on the brake flywheel 22.

[0045] The outer circumferential surface of the brake flywheel 22 forms a contact surface 222, which is limited by the wheel assembly 50 described below, and the contact surface 222 is in rolling contact with the wheel assembly 50. The two opposite side surfaces of the brake flywheel 22 form friction surfaces 223, and the friction surfaces 223 are in sliding contact with the brake component 21. The interior of the brake flywheel 22 forms a cavity, which serves as the operating space of the anti-falling component 30.

[0046] In the first state, the centrifugal block 32 overcomes the elastic force of the elastic member 33 and abuts against the trigger portion 221 (ratchet). The centrifugal block 32 continues to rotate around the axis of the rotating member 34 along with the fixed base 31. The centrifugal block 32 drives the brake flywheel 22 to rotate through the ratchet. The friction surface 223 of the brake flywheel 22 is in sliding contact with the brake component 21, so that friction is generated when the brake flywheel 22 rotates. The friction force prevents the brake flywheel 22 from rotating slowly, thereby reducing the rotation speed of the transmission component 10, so as to achieve a slow descent by slowly falling, thereby effectively buffering the impact force of the lifting equipment during the stall falling process and improving the stability of the lifting equipment.

[0047] In some embodiments of the present invention, a wheel assembly 50 is further provided between the two relatively arranged braking components 21. The wheel assembly 50 is arranged at intervals along the circumference of the brake flywheel 22. The outer circumferential surface of the brake flywheel 22 is in rolling contact with the wheel assembly 50, that is, the outer circumferential surface of the brake flywheel 22 is in abutment or tangential contact with the wheel assembly 50 to limit the position of the brake flywheel 22 and ensure that the brake flywheel 22 always makes a circular motion, thereby improving the reliability of the anti-fall device.

[0048] In some embodiments of the present invention, the wheel assembly 50 includes a guide wheel 51, an installation shaft 52 and a fastening component 53. The guide wheel 51 is sleeved on the installation shaft 52 and can rotate relative to the installation shaft 52. Both ends of the installation shaft 52 pass through the braking component 21. The fastening component 53 is located on the outside of the braking component 21 and is connected to the installation shaft 52.

[0049] Equivalently, both ends of the mounting shaft 52 are formed with connecting parts for connecting the fastening component 53, and the connecting parts can be pin holes or threads, and the fastening component 53 can be an adjusting nut 42 that matches the threads, or a pin that matches the pin hole.

[0050] In order to improve the structural stability of the wheel assembly 50 , when the fastening component 53 is the adjusting nut 42 , a flat washer (not numbered in the figure) may be added at the position where the adjusting nut 42 is located.

[0051] In some embodiments of the present invention, in order to reduce the friction between the guide wheel 51 and the mounting shaft 52, an oil-free bearing 54 is embedded between the guide wheel 51 and the mounting shaft 52. The oil-free bearing 54 is sleeved on the outer surface of the mounting shaft 52, and the guide wheel 51 is sleeved on the outer surface of the oil-free bearing 54.

[0052] The oil-free bearing 54 may be a copper oil-free bushing, which is a high-strength brass bearing lubricated by oil flowing from the oil groove, has a high hardness, a large bearing pressure, and can be used in heavy-load situations.

[0053] See also Figure 4 and Figure 5 In some embodiments of the present invention, the braking component 21 includes a mounting component 211, a brake disc 212 and a friction plate 213. The brake disc 212 is arranged on the transmission shaft 11 of the transmission component 10 through the mounting component 211. The brake disc 212 remains fixed relative to the transmission shaft 11. The friction plate 213 is arranged on the side of the brake disc 212 facing the brake flywheel 22. The friction plate 213 is arranged at intervals along the circumference of the brake disc 212.

[0054] Among them, the brake disc 212 can be understood as the installation carrier of the friction plate 213. The friction plate 213 is detachably connected to the brake disc 212 by structures such as screws or bolts. The bolts used to connect the friction plate 213 can be countersunk bolts to reduce space occupancy. The countersunk bolts can be connected in conjunction with structures such as gaskets and nuts.

[0055] The friction plate 213 is made of friction material, which is a key component of the brake component 21 . The friction plate 213 absorbs power through friction to achieve buffer braking.

[0056] In some embodiments of the present invention, in order to reduce the friction between the brake disc 212 and the mounting shaft 52, a bearing sleeve 55 is further provided at the connection position of the brake disc 212 and the mounting shaft 52. The bearing sleeve 55 is embedded in the connecting hole of the brake disc 212, and the mounting shaft 52 is passed through the bearing sleeve 55, so that the brake disc 212 can slide along the axial direction of the mounting shaft 52, thereby cooperating with the adjusting component 40 to adjust the gap between the two brake components 21, and then adjusting the friction between the brake flywheel 22 and the friction plates 213 on the two relatively arranged brake discs 212.

[0057] There are two connecting lugs arranged opposite to each other on the bearing sleeve 55 , and each connecting lug is connected to the corresponding brake disc 212 via a fastener such as a screw or a bolt.

[0058] Figure 6 It is a structural schematic diagram of the anti-falling assembly and the installation components in the anti-falling device provided in an embodiment of the present invention. Figure 7 yes Figure 6 Sectional view along line BB. Figure 8 yes Figure 6 Schematic diagram of the structural explosion of the fall prevention assembly and installation parts shown.

[0059] See also Figures 6 to 8 In some embodiments of the present invention, the mounting component 211 includes a bearing 2111 and a bearing seat 2112. The bearing 2111 is disposed in a cavity of the bearing seat 2112 and is limited by stoppers such as retaining springs. The brake disc 212 is fixedly connected to the bearing seat 2112. The bearing 2111 is sleeved on the outside of the transmission shaft 11 of the transmission component 10 and has an interference fit with the transmission shaft 11.

[0060] That is, a chamber is provided inside the bearing seat 2112, and the bearing 2111 is embedded in the chamber and limited by the retaining springs on both sides to form the mounting member 211. The retaining spring is installed in the mounting groove of the chamber to block the bearing 2111 to prevent the bearing 2111 from escaping from the chamber. The brake member 21 is provided on the transmission shaft 11 through the mounting member 211 and remains fixed relative to the transmission shaft 11. When the transmission shaft 11 rotates, the bearing 2111 rotates relative to the transmission shaft 11, and the brake disc 212 and the bearing seat 2112 remain fixed, that is, the brake disc 212 and the friction plate 213 provided on the brake disc 212 are stationary relative to the transmission shaft 11, so that the friction plate 213 is in sliding contact with the brake flywheel 22 to absorb the braking energy of the brake flywheel 22.

[0061] See also Figures 6 to 8 In some embodiments of the present invention, the adjusting component 40 includes an adjusting bolt 41, an adjusting nut 42 and an adjusting gasket 43. The adjusting bolt 41 is passed through two relatively arranged braking components 21. The adjusting nut 42 is connected to the adjusting bolt 41. The adjusting gasket 43 is located between the corresponding braking component 21 and the adjusting nut 42 and the adjusting bolt 41.

[0062] By screwing the adjusting nut 42 and the adjusting bolt 41 , the gap between the two brake components 21 is adjusted, thereby adjusting the friction force between the brake flywheel 22 and the friction plates 213 on the two oppositely arranged brake discs 212 .

[0063] See also Figures 6 to 8 In some embodiments of the present invention, the adjusting component 40 further includes a disc spring module 44 , which is sleeved on the adjusting bolt 41 , and the disc spring module 44 is located between the corresponding brake disc 212 and the adjusting nut 42 .

[0064] This is equivalent to a brake disc 212 arranged oppositely utilizing a disc spring module 44 and an adjusting bolt 41 and an adjusting nut 42 to elastically press the brake flywheel 22 onto the other brake disc 212. The disc spring module 44 can gradually increase the pressing force as the adjusting bolt 41 and the adjusting nut 42 are tightened, thereby achieving adjustable friction between the brake flywheel 22 and the two relatively arranged brake discs 212.

[0065] By tightening the two relatively arranged brake discs 212 through the disc spring module 44, the adjusting bolt 41 and the adjusting nut 42, it is ensured that the friction force between the brake flywheel 22 and the friction plate 213 can be freely adjusted. By adjusting the friction force between the brake flywheel 22 and the friction plate 213, the slow descent distance of the lifting equipment after falling can be adjusted.

[0066] Among them, the disc spring module 44 is composed of a plurality of stacked disc springs. The disc spring module 44 is used in conjunction with the adjustment component 40 to further increase the elastic pressing effect and improve the adjustment ability of the adjustment component 40.

[0067] In order to ensure that the adjustment effect of the brake assembly 20 is more uniform, the adjustment components 40 are evenly arranged along the circumferential direction of the brake flywheel 22 .

[0068] Fig. 9 yes Figure 6 Schematic diagram of the structure of the anti-fall component shown.

[0069] See also Fig. 9 In some embodiments of the present invention, the fixed base 31 includes a main body 311 and a wheel portion 312. The wheel portions 312 are relatively arranged on both sides of the main body 311. The wheel portions 312 extend outward along the outer circumferential surface of the main body 311. The two relatively arranged wheel portions 312 and the main body 311 limit a receiving groove 313. The centrifugal block 32 is rotatably connected to the wheel portion 312 through a rotating member 34. The main body of the elastic member 33 is sleeved on the rotating member 34. The elastic member 33 is a torsion spring. One end of the elastic member 33 abuts against the centrifugal block 32, and the other end of the elastic member 33 abuts against the bottom wall of the receiving groove 313.

[0070] In the second state, the centrifugal block 32 is separated from the brake flywheel 22 by the elastic member 33 , and the centrifugal block 32 is received in the receiving groove 313 to avoid affecting the normal operation of the transmission shaft 11 of the transmission component 10 .

[0071] The fixed base 31 is fixedly connected to the transmission shaft 11 through a shear key, or the transmission shaft 11 is interference fit with the fixed base 31. When the transmission shaft 11 rotates, the fixed base 31 can be driven to rotate synchronously. In addition, the fixed base 31 can also be axially limited by an axial stopper such as a retaining spring to prevent the fixed base 31 from moving along the transmission shaft 11.

[0072] When the fixed base 31 rotates to a certain speed, the centrifugal block 32 is subjected to the centrifugal force of the fixed base 31, rotates around the rotating member 34 to overcome the torsion of the elastic member 33 and is thrown out. The centrifugal block 32 is clamped on the ratchet of the brake flywheel 22, and the brake flywheel 22 is driven to rotate by the ratchet. The friction surface 223 of the brake flywheel 22 is in sliding contact with the brake component 21, so that friction is generated when the brake flywheel 22 rotates. The friction force prevents the brake flywheel 22 from rotating slowly, so that the transmission component 10 reduces the rotation speed, and slowly falls to achieve slow descent, thereby effectively buffering the impact force of the lifting equipment during the stall fall process and improving the stability of the lifting equipment.

[0073] When the lifting device needs to be contact locked, the lifting device is controlled to move upward, and the centrifugal block 32 is separated from the brake flywheel 22 under the action of the elastic member 33, and the centrifugal block 32 is accommodated in the receiving groove 313 to avoid affecting the normal operation of the transmission shaft 11 of the transmission component 10. In other words, the centrifugal block 32 can realize the self-recovery function after being triggered through the elastic member 33, thereby improving the convenience of operation of the anti-fall device.

[0074] Among them, the rotating part 34 can be a rivet pin, the rivet connection point is firm and reliable, and can form a round point and a giant point connection. One end of the rivet pin is limited to the outside of the wheel part 312, and the other end passes through the wheel part 312 and the elastic part 33, and extends from the outside of the wheel part 312 on the other side, and is fixed by a structure such as a pin or a nut.

[0075] In addition, the rotating member 34 can also adopt a structure such as a rotating shaft or a pin shaft.

[0076] In some embodiments of the present invention, in order to reduce the friction and rusting possibility between the centrifugal block 32 and the rivet pin, a flanged copper sleeve is provided between the centrifugal block 32 and the rivet pin, and the flanged copper sleeve abuts against the wheel portion 312.

[0077] The present invention also provides a lifting device, which comprises a lifting body, a driving device and any one of the above anti-falling devices, wherein the driving device and the anti-falling device are both arranged on the lifting body, the transmission component of the anti-falling device is suitable for cooperating with the rack, and the driving wheel of the driving device is also cooperating with the rack for transmission. When the lifting body stalls and falls, the rotation speed of the transmission shaft 11 of the transmission component 10 is accelerated, thereby driving the centrifugal throw block 32 to overcome the elastic force of the elastic member 33, abutting against the brake flywheel 22 to drive the brake flywheel 22 to rotate and realize slow descent braking.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fall prevention device, characterized in that: include: Transmission components; A brake assembly, wherein an accommodating cavity is limited inside, the brake assembly comprises two brake components and a brake flywheel arranged opposite to each other, wherein one of the brake components is suitable for being installed on a lifting device, and the other brake component is connected to one of the brake components through an adjusting component, each of the brake components is kept fixed relative to the transmission component, and the brake flywheel is located between the two brake components arranged opposite to each other; An anti-falling component is located in the accommodating cavity, and the anti-falling component includes a fixed base, a centrifugal block and an elastic member. The fixed base is fixedly connected to the transmission component and is suitable for rotating with the transmission component. The centrifugal block is rotatably arranged on the fixed base through a rotating member, and is suitable for switching between a first state and a second state with changes in centrifugal force. The elastic member is arranged on the rotating member; in the first state, the centrifugal block overcomes the elastic force of the elastic member, abuts against the brake flywheel to drive the brake flywheel to rotate to achieve slow descent braking; in the second state, the centrifugal block is disengaged from the brake flywheel under the action of the elastic member.

2. The anti-falling device according to claim 1, characterized in that: A trigger portion is provided on the inner circumferential surface of the brake flywheel, and the trigger portion extends from the inner circumferential surface of the brake flywheel along the radius of the brake flywheel toward the center of the brake flywheel; in the first state, the centrifugal block overcomes the elastic force of the elastic member and abuts against the trigger portion to drive the brake flywheel to rotate to achieve slow descent braking; The outer circumferential surface of the brake flywheel forms a contact surface, and the contact surface is restricted so that the brake flywheel can rotate along the circumferential direction of the fixed base; the side surface of the brake flywheel forms a friction surface, and the friction surface contacts the brake component.

3. The anti-falling device according to claim 2, characterized in that: The brake assembly also includes a wheel assembly, which is arranged between two oppositely arranged brake components and connected to the two oppositely arranged brake components. The wheel assembly is arranged at intervals along the circumference of the brake flywheel, and the contact surface of the brake flywheel abuts against the wheel assembly.

4. The anti-falling device according to claim 3, characterized in that: The wheel assembly comprises a guide wheel, a mounting shaft and a fastening component, wherein the mounting shaft is fixedly connected to one of the brake components through the fastening component, and the other brake component is movably connected to the mounting shaft; The guide wheel is sleeved on the outer side of the installation shaft and is located between the two brake components that are arranged opposite to each other. The contact surface of the brake flywheel abuts against the guide wheel.

5. The anti-falling device according to claim 4, characterized in that: An oil-free bearing is provided between the guide wheel and the mounting shaft; And / or, another of the braking components is movably connected to the mounting shaft via a bearing sleeve.

6. The anti-fall device according to claim 1, characterized in that: The braking component includes a mounting component, a brake disc and a friction plate. The brake disc is arranged on the transmission component through the mounting component. The brake disc is kept fixed relative to the transmission component. The friction plate is arranged on a side of the brake disc facing the brake flywheel. The friction plates are arranged at intervals along the circumference of the mounting component.

7. The anti-falling device according to claim 6, characterized in that: The mounting component comprises a bearing and a bearing seat, wherein the bearing is arranged in a cavity of the bearing seat; The brake disc is fixedly connected to the bearing seat, and the transmission component is passed through the bearing and has an interference fit with the bearing.

8. The anti-fall device according to claim 1, characterized in that: The adjusting component comprises an adjusting bolt, an adjusting nut and an adjusting washer. The adjusting bolt passes through two relatively arranged braking components. The adjusting nut is connected with the adjusting bolt. The adjusting washer is located between the corresponding braking component and the adjusting nut and the adjusting bolt.

9. The anti-falling device according to claim 8, characterized in that: The adjusting component also includes a disc spring module, which is sleeved on the adjusting bolt and located between the corresponding braking component and the adjusting gasket.

10. The anti-fall device according to claim 1, characterized in that: The fixed base comprises a body and a wheel portion, wherein the wheel portion is arranged on two sides of the body opposite to each other and defines a receiving groove with the body; The centrifugal block is rotatably arranged on the wheel portion through a rotating member, the main body of the elastic member is sleeved on the rotating member, one end of the elastic member abuts against the centrifugal block, and the other end of the elastic member abuts against the bottom wall of the accommodating groove; In the second state, the centrifugal block is separated from the brake flywheel under the action of the elastic member and is accommodated in the accommodating groove.

11. The anti-falling device according to any one of claims 1 to 10, characterized in that: The transmission component comprises a transmission shaft and a transmission gear, wherein the transmission gear is arranged at at least one end of the transmission shaft; the fixed base is fixedly connected to the transmission shaft, and the braking component is rotationally matched with the transmission shaft.

12. A lifting device, characterized in that: It comprises a lifting body, a driving device and the anti-falling device according to any one of claims 1 to 11, wherein the driving device and the anti-falling device are both arranged on the lifting body, and the transmission component in the anti-falling device and the driving device are both matched with a rack.

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