Anti-falling self-locking pulley
By incorporating a slip groove and anti-fall tooth assembly on the pulley, the problem of pulley sagging when the driving force is removed is solved, enabling automatic switching between self-locking and unlocking, and improving the safety and convenience of the pulley.
Patent Information
- Application Number
- CN202423117528.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing pulley assemblies lack an anti-fall self-locking function when the driving force is withdrawn, causing heavy objects to fall at a rapid speed, posing a safety risk.
A self-locking anti-fall pulley was designed. By setting a sling groove and an anti-fall tooth assembly on the pulley, when the heavy object falls at high speed, the sling uses inertia to drive the anti-fall tooth assembly to rotate and lock the rope, thus achieving self-locking and preventing falling. It can also be automatically unlocked when needed.
It effectively prevents heavy objects from falling at high speed, improves the safety of pulley use, eliminates safety accidents, has an anti-fall self-locking function, and is easy to use.
Smart Images
Figure CN223445113U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the pulley field of hoisting heavy objects, and particularly relates to a self-locking pulley for preventing falling. BACKGROUND
[0002] The pulley assembly is often used to change the direction of driving force when hoisting heavy objects, but many of the pulley assemblies currently used do not have the function of preventing falling and self-locking, and when the driving force is withdrawn or disappears, the object will fall at a very high speed, which brings safety risks to the operator, and the operator or the object under the heavy object is easily injured or damaged, so a self-locking pulley for preventing falling needs to be designed. SUMMARY
[0003] The utility model provides a self-locking pulley for preventing falling to solve the technical problems in the technical field.
[0004] The utility model provides a self-locking pulley for preventing falling to solve the above technical problems, which comprises a first support and a second support, a first pulley is arranged between the first support and the second support through a rotating shaft, a rope channel is formed between the first support, the second support and the first pulley, at least one flapping piece groove is arranged on the first pulley, a flapping piece is pivotally connected in the flapping piece groove, a falling stopping tooth assembly is pivotally arranged on the upper side of the first pulley of the rope channel, when the heavy object hoisted on the first pulley falls at a very high speed, the flapping piece drives the falling stopping tooth assembly to rotate and stop the rope due to inertia.
[0005] Further, the falling stopping tooth assembly is provided with a driving part and a tooth part, the falling stopping tooth assembly is rotatably pivotally connected to the first support through a pin shaft, a reset torsional spring is arranged between the falling stopping tooth assembly and the first support, when the heavy object hoisted on the first pulley falls at a very high speed, the flapping piece drives the driving part to rotate and further drives the tooth part to rotate and stop the rope due to inertia.
[0006] Still further, the second support is rotatably arranged on the rotating shaft, and the second support can open or close the rope channel.
[0007] Still further, the second support is rotatably arranged on the rotating shaft, and the second support can open or close the rope channel, a clamping groove is arranged on the second support, and the clamping groove can be clamped on the pin shaft to be fixed.
[0008] Still further, two flapping piece grooves are arranged on the first pulley, and the two flapping piece grooves are evenly arranged on the first pulley.
[0009] Still further, a third support is further arranged on the rotating shaft, and a second pulley is further arranged on the rotating shaft between the third support and the first support.
[0010] Furthermore, a first fixing hole, a second fixing hole and a third fixing hole are respectively provided on the first bracket, the second bracket and the third bracket, and the positions of the first fixing hole, the second fixing hole and the third fixing hole correspond to each other.
[0011] The utility model relates to an anti-fall self-locking pulley, comprising a first bracket and a second bracket, a first pulley is provided between the first bracket and the second bracket via a rotating shaft, a rope channel is formed between the first bracket, the second bracket and the first pulley; at least one swing plate groove is provided on the first pulley, a swing plate is pivotally connected in the swing plate groove, and a fall-stopping tooth assembly is pivotally provided on the upper side of the first pulley of the rope channel, when the heavy object hoisted on the first pulley falls at a high speed, the swing plate is swung out due to inertia to drive the fall-stopping tooth assembly to rotate and clamp the rope to stop falling, and when the heavy object needs to be pulled up again after stopping falling, the swing plate will be separated from the fall-stopping tooth assembly and return to the swing plate groove, thereby having anti-fall self-locking function, improving the safety of pulley use, effectively preventing safety accidents, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the anti-fall self-locking pulley embodiment 1;
[0013] Figure 2 This is a schematic diagram of the structure of the anti-fall self-locking pulley embodiment 1 in the open state;
[0014] Figure 3 This is a schematic diagram of the structure of the anti-fall self-locking pulley hiding the first bracket and cooperating with the rope and in the anti-fall state;
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the anti-fall self-locking pulley embodiment 2;
[0016] Figure 5 This is a schematic structural diagram of the anti-fall self-locking pulley embodiment 2 in the open state. DETAILED DESCRIPTION
[0017] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is for the purpose of illustrating the general principles of the present invention, and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined as defined by the attached claims.
[0018] The utility model will be made further detailed explanation below combining with the drawings, the orientation terms such as " upper", " lower", " left" and " right" described in the specification are only for more understanding and better explanation, but not as the specific limitation of the utility model.
[0019] Embodiment 1
[0020] As Figures 1-3 The utility model discloses a prevent falling self -locking pulley, including first support 1 and second support 3, first support 1 and second support 3 are provided with first pulley 2 through pivot 1a, and the first pulley 2 is formed in the rope channel between first support 1, second support 3 and first pulley 2, at least one fling piece slot 2a is provided on first pulley 2, and the fling piece slot 2a is pivotally connected with fling piece 2b, and the first pulley 2 of rope channel upside pivotally connected is provided with stop falling rack gear assembly 4, when the heavy object on first pulley 2 hoists extremely fast and falls, the fling piece 2b due to inertia fling out drive stop falling rack gear assembly 4 rotation and stop falling of rope.
[0021] Preferably, the stop falling rack gear assembly 4 is provided with a driving part 4a and a rack part 4b, the stop falling rack gear assembly 4 is rotatably connected to the first support 1 through a pin shaft 4c, and a reset torsion spring 4d is arranged between the stop falling rack gear assembly 4 and the first support 1, when the heavy object hoisted on the first pulley 2 falls at a high speed, the fling piece 2b is driven to rotate by inertia, thereby driving the rack part 4b to rotate and stop the rope from falling, when the heavy object needs to be lifted again after stopping, the fling piece 2b will be separated from the driving part 4a and return to the fling piece slot 2a.
[0022] More preferably, if the second support 3 is fixedly arranged on the pivot 1a, the rope head needs to pass through the rope channel for loading when hoisting the heavy object, which is not very convenient to use, therefore, the second support 3 is rotatably arranged on the pivot 1a, and the rope channel can be opened or closed by rotating the second support 3, thereby facilitating the loading or taking out of the hoisting rope.
[0023] More preferably, the second support 3 is rotatably arranged on the pivot 1a, and the rope channel can be opened or closed by rotating the second support 3, and the second support 3 is provided with a clamping groove 3b, which can be clamped on the pin shaft 4c for fixation.
[0024] More preferably, the fling piece slot 2a provided on the first pulley 2 is two, and the two fling piece slots 2a are evenly arranged on the first pulley 2.
[0025] As Figure 2As shown, the second support 3 is rotated to open the rope channel to load the hoisting rope 5, the first end 5a of the hoisting rope 5 hoists the heavy object, the second end 5b of the hoisting rope 5 is subjected to pulling force, and the heavy object hoisted at the first end 5a can be slowly lifted, at this time, the flapper 2b in the flapper slot 2a at the upper end of the first pulley 2 abuts against the flapper slot 2a due to gravity, and the flapper 2b at the lower end of the first pulley 2 naturally droops. When an abnormal situation occurs, the pulling force applied to the second end 5b is suddenly removed, the first end 5a of the hoisting rope 5 connected to the heavy object sharply drops, the first pulley 2 is sharply and reversely rotated, the flapper 2b arranged in the flapper slot 2a is flapped out due to inertia and abuts against the driving part 4a of the anti-falling ratchet assembly 4, and drives the driving part 4a to rotate, and further drives the ratchet part 4b to rotate and lock the hoisting rope 5, preventing the heavy object from sharply falling, and playing an anti-falling self-locking role, like Figure 3 When the pulling force is applied to the second end 5b of the hoisting rope 5 again, the flapper 2b is separated from the driving part 4a and returns to the flapper slot 2a, the anti-falling ratchet assembly 4 is reset under the action of the reset torsional spring 4d, the ratchet part 4b is reset to be away from the hoisting rope 5, thereby unlocking the hoisting rope 5 and restoring the normal state of lifting the heavy object. At the same time, the pulling force applied to the second end 5b of the hoisting rope 5 can slowly release the heavy object fixed at the first end 5a of the hoisting rope 5, at this time, the flapper 2b also remains in the flapper slot 2a during the slow release process, and the function of slowly releasing the hoisted heavy object is realized, so that the pulley unidirectional mode and bidirectional mode can be switched at any time.
[0026] Embodiment 2
[0027] More preferably, as shown in Figure 4 and Figure 5 As shown, the rotating shaft 1a is further provided with a third support 6, and the rotating shaft 1a between the third support 6 and the first support 1 is further provided with a second pulley 7. The second pulley 7 increases the use diversity of the anti-falling self-locking pulley. For light objects, the second pulley 7 can be used for lifting, and the anti-falling ratchet assembly 4 can not be arranged.
[0028] More preferably, the first support 1, the second support 3 and the third support 6 are respectively provided with first fixing holes 1b, second fixing holes 3a and third fixing holes 6a, and the first fixing holes 1b, the second fixing holes 3a and the third fixing holes 6a are located corresponding to each other. When in use, the pulley is arranged in the air through the first fixing holes 1b, the second fixing holes 3a and the third fixing holes 6a, so as to facilitate hoisting the heavy object through the pulley.
[0029] The utility model relates to an anti -falling self -locking pulley, including first support and second support, first support and second support between be provided with first pulley through pivot, first support, second support and first pulley form the rope channel between, first pulley at least set up one fling piece groove, the fling piece groove is pivoted with fling piece, the first pulley of rope channel upside pivoted is provided with the anti -falling tooth set spare, when the heavy object of first pulley on hoisting extremely speed falls, the fling piece because inertia fling out drive anti -falling tooth set spare rotation and hold up the rope, after the heavy object hold up, need pull the heavy object up again, fling piece will separate anti -falling tooth set spare and return to fling piece groove in, thus have anti -falling self -locking, improve pulley use safety, effectively prevent the safety accident from happening, good practicality.
[0030] The above description shows and describes the preferred embodiments of the utility model, but as previously described, it should be understood that the utility model is not limited to the form disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be modified by the above teaching or related art or knowledge within the scope of the utility model concept described herein. The modification and change made by the person skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the protection scope of the claims attached to the utility model.
Claims
1. An anti-fall self-locking pulley, comprising a first bracket (1) and a second bracket (3), wherein a first pulley (2) is provided between the first bracket (1) and the second bracket (3) via a rotating shaft (1a), and a rope channel is formed between the first bracket (1), the second bracket (3) and the first pulley (2); characterized in that: At least one swinging plate groove (2a) is provided on the first pulley (2), a swinging plate (2b) is pivotally connected in the swinging plate groove (2a), and a falling-stopping tooth assembly (4) is pivotally provided on the upper side of the first pulley (2) of the rope channel. When the heavy object hoisted on the first pulley (2) falls at a high speed, the swinging plate (2b) is thrown out due to inertia to drive the falling-stopping tooth assembly (4) to rotate and clamp the rope to stop falling.
2. The anti-fall self-locking pulley according to claim 1, characterized in that: The anti-falling tooth assembly (4) is provided with a driving part (4a) and a tooth part (4b). The anti-falling tooth assembly (4) is rotatably pivoted to the first bracket (1) via a pin shaft (4c). A reset torsion spring (4d) is provided between the anti-falling tooth assembly (4) and the first bracket (1). When the heavy object hoisted on the first pulley (2) falls at a high speed, the swinging piece (2b) is driven to rotate by inertia to drive the driving part (4a), thereby driving the tooth part (4b) to rotate and clamp the rope to stop the falling.
3. The anti-fall self-locking pulley according to claim 1, characterized in that: The second bracket (3) is rotatably arranged on the rotating shaft (1a), and the second bracket (3) can be rotated to open or close the rope channel.
4. The anti-fall self-locking pulley according to claim 2, characterized in that: The second bracket (3) is rotatably arranged on the rotating shaft (1a), and the second bracket (3) can be rotated to open or close the rope channel. The second bracket (3) is provided with a card slot (3b), and the card slot (3b) can be fixed on the pin shaft (4c).
5. The anti-fall self-locking pulley according to any one of claims 1 to 4, characterized in that: A third bracket (6) is also provided on the rotating shaft (1a), and a second pulley (7) is also provided on the rotating shaft (1a) between the third bracket (6) and the first bracket (1).
6. The anti-fall self-locking pulley according to any one of claims 1 to 4, characterized in that: There are two strip-throwing grooves (2a) provided on the first pulley (2), and the two strip-throwing grooves (2a) are evenly provided on the first pulley (2).
7. The anti-fall self-locking pulley according to claim 5, characterized in that: The first bracket (1), the second bracket (3) and the third bracket (6) are respectively provided with a first fixing hole (1b), a second fixing hole (3a) and a third fixing hole (6a); the positions of the first fixing hole (1b), the second fixing hole (3a) and the third fixing hole (6a) correspond to each other.