Double pulley with rope self-locking mechanism
By installing a self-locking assembly under the double pulley body and using a torsion spring to provide elasticity, the rope self-locking is achieved, solving the problem that the existing double pulley body cannot achieve self-locking and improving safety.
Patent Information
- Application Number
- CN202421616022.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing double pulley body cannot achieve self-locking of the rope, causing the pulley to roll backwards after the heavy object accidentally drops off during the lifting process, and the heavy object falls from a high place, which is low in safety and is prone to safety accidents.
A dual pulley with a rope self-locking mechanism is designed. By installing a self-locking assembly under the double pulley main body, including a mounting plate, bolt, top plate, shaft, fixing disc and self-locking block, the torsion spring provides elastic force, so that the self-locking block is close to the outer wall of the rope, and realizes the self-locking block of the rope.
The rope is self-locked, avoiding the risk of heavy objects falling off accidentally during the lifting process, and improving the safety of the dual pulleys when used.
Smart Images
Figure CN222743963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rope self-locking, in particular to a double pulley with a rope self-locking mechanism. Background Art
[0002] The double pulley body is a simple machine used to lift heavy objects and save effort. The rope passes through the pulley to tie the heavy object for lifting, and the pulley can roll according to the up and down movement of the rope.
[0003] However, when the existing double pulley body is lifting a heavy object, the pulley can roll, but if the lifting rope accidentally slips out of the hand, the pulley can also roll in the opposite direction, and self-locking cannot be achieved. The heavy object will fall from a height, which has low safety and is prone to safety accidents. Utility Model Content
[0004] The utility model aims to provide a double pulley with a rope self-locking mechanism to solve the problem that the double pulley main body mentioned in the above background technology cannot achieve self-locking.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a double pulley with a rope self-locking mechanism, comprising:
[0006] A double pulley body, a self-locking component is installed on one side below the double pulley body, and a limit position component is arranged above the self-locking component;
[0007] A self-locking component comprises a mounting plate, a bolt passing through the bottom of the mounting plate, a top plate fixedly mounted above the bolt, a shaft rod fixedly arranged above the top plate, a fixing plate fixedly arranged above the shaft rod, a self-locking block connected to the outer wall of the shaft rod, and a torsion spring arranged inside the top of the self-locking block.
[0008] Preferably, the limiting assembly includes a fixing plate, a screw rod passes through the interior of the fixing plate, a guide block is provided on one side of the screw rod, a conical block is fixedly connected to the bottom of the screw rod, a nut pair is connected to the outer wall of the guide block, and a handle is fixedly provided on the outer wall of the nut pair.
[0009] Preferably, the bolts are provided with holes corresponding to the bolts, and the bolts are threadedly connected to the double pulley body.
[0010] Preferably, the self-locking block is rotationally connected to the shaft rod, and the two ends of the torsion spring are fixedly connected to the self-locking block and the fixed disk respectively.
[0011] Preferably, the torsion spring is in a compressed state, and the fixing plate is fixedly connected to the fixing disk.
[0012] Preferably, the screw rod is slidably connected to the fixed plate, and the guide block is fixedly connected to the fixed plate.
[0013] Preferably, the screw rod is provided with a groove corresponding to the guide block, and the nut pair is rotatably connected to the fixing plate.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] (1) The novel double pulley is provided with a self-locking component, and the rope is passed through the double pulley body and the self-locking block. When the heavy object is pulled up, the rope moves from the double pulley body to the self-locking block. When the rope moves, the self-locking block rotates outward and will not lock the rope. Once it slips out of the hand, the rope immediately moves in the opposite direction. The torsion spring provides elastic force. Under the elastic force of the torsion spring, the self-locking block is tightly attached to the outer wall of the rope. The rope and the self-locking block generate friction, and the self-locking block rotates inward and gradually clamps the rope, thereby realizing the self-locking of the rope, avoiding the heavy object from falling to the ground after accidentally slipping out of the hand, causing harm to personnel, and improving the safety of the double pulley when in use.
[0016] (2) The new double pulley is provided with a limit assembly. After the heavy object is lifted, the rope needs to be moved in the opposite direction. The handle can be turned to drive the nut pair to rotate. The nut pair drives the screw rod to move downward. The screw rod drives the conical block to move toward the self-locking block. The conical block can open the self-locking block to prevent the self-locking block from locking the rope when the rope moves in the opposite direction, thereby improving the practicality of the double pulley. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a cross-sectional structural diagram of the self-locking component and the limiting component of the utility model;
[0019] Figure 3 For the utility model Figure 2 Schematic diagram of the structure of part A;
[0020] Figure 4 It is an exploded schematic diagram of the self-locking component of the utility model;
[0021] Figure 5 It is an exploded schematic diagram of the limit assembly of the utility model.
[0022] In the figure: 01, double pulley body; 02, self-locking assembly; 21, mounting plate; 22, bolt; 23, top plate; 24, shaft; 25, fixed plate; 26, self-locking block; 27, torsion spring; 03, limit assembly; 31, fixed plate; 32, screw rod; 33, guide block; 34, tapered block; 35, nut pair; 36, handle. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-5 The utility model provides an embodiment: a double pulley with a rope self-locking mechanism. The torsion spring 27 and the nut pair 35 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be repeated here.
[0025] It comprises: a double pulley body 01, a self-locking component 02 is installed on one side below the double pulley body 01, and a limit position component 03 is arranged above the self-locking component 02;
[0026] Self-locking component 02, the self-locking component 02 includes a mounting plate 21, a bolt 22 passes through the bottom of the mounting plate 21, the bolt 22 is passed through the hole of the mounting plate 21 and can be screwed into the double pulley body 01 to fix the mounting plate 21 in position, a top plate 23 is fixedly installed above the bolt 22, a shaft rod 24 is fixedly arranged above the top plate 23, a fixing plate 25 is fixedly arranged above the shaft rod 24, a self-locking block 26 is connected to the outer wall of the shaft rod 24, a torsion spring 27 is arranged inside the top of the self-locking block 26, under the elastic force of the torsion spring 27, the self-locking block 26 can be tightly attached to the outer wall of the self-locking block 26 to prevent the rope from moving in the opposite direction, and the self-locking block 26 cannot generate friction with the rope in the first time.
[0027] Furthermore, the limit assembly 03 includes a fixed plate 31, a screw rod 32 passes through the interior of the fixed plate 31, the movement of the screw rod 32 can drive the conical block 34 to move, the conical block 34 can open the self-locking block 26, a guide block 33 is provided on one side of the screw rod 32, the guide block 33 plays a guiding role for the screw rod 32, the conical block 34 is fixedly connected below the screw rod 32, the outer wall of the guide block 33 is connected to a nut pair 35, the rotation of the nut pair 35 can drive the screw rod 32 to move, and a handle 36 is fixedly provided on the outer wall of the nut pair 35.
[0028] Furthermore, holes are opened for the bolts 22 corresponding to the bolts 22 , and the bolts 22 are threadedly connected to the double pulley body 01 . The bolts 22 can be screwed into the double pulley body 01 through the holes of the mounting plate 21 to fix the position of the mounting plate 21 .
[0029] Furthermore, the self-locking block 26 is rotationally connected to the shaft rod 24, and the two ends of the torsion spring 27 are fixedly connected to the self-locking block 26 and the fixed disk 25 respectively. The torsion spring 27 provides elastic force. Under the elastic force of the torsion spring 27, the self-locking block 26 is tightly attached to the outer wall of the rope.
[0030] Furthermore, the torsion spring 27 is in a compressed state, ensuring that under the elastic force of the torsion spring 27, the self-locking block 26 can be tightly attached to the outer wall of the self-locking block 26 to prevent the rope from moving in the opposite direction. The self-locking block 26 cannot generate friction with the rope in the first place, and the fixed plate 31 is fixedly connected to the fixed disk 25 to ensure the firmness of the fixed plate 31.
[0031] Furthermore, the screw rod 32 is slidably connected to the fixed plate 31 to ensure that the fixed plate 31 does not affect the movement of the screw rod 32. The movement of the screw rod 32 can drive the conical block 34 to move. The conical block 34 can open the self-locking block 26. The guide block 33 is fixedly connected to the fixed plate 31 to ensure the firmness of the guide block 33. The guide block 33 plays a guiding role on the screw rod 32.
[0032] Furthermore, a groove is provided in the screw rod 32 corresponding to the guide block 33, and the guide block 33 guides the screw rod 32. The nut pair 35 is rotationally connected to the fixed plate 31 to ensure that the fixed plate 31 does not affect the rotation of the nut pair 35. The rotation of the nut pair 35 can drive the screw rod 32 to move.
[0033] Working principle: When in use, first pass the rope through the double pulley body 01 and the self-locking block 26. When pulling the heavy object up, the rope moves from the double pulley body 01 to the self-locking block 26. When the rope moves, the self-locking block 26 rotates outward and will not lock the rope. Once it slips out of your hand, the rope immediately moves in the opposite direction. The torsion spring 27 provides elastic force. Under the elastic force of the torsion spring 27, the self-locking block 26 is tightly attached to the outer wall of the rope. The rope and the self-locking block 26 produce friction. The self-locking block 26 rotates inward and gradually clamps the rope. After the lifting of the heavy object is completed, the rope needs to move in the opposite direction. The handle 36 can be turned, and the handle 36 drives the nut pair 35 to rotate. The nut pair 35 drives the screw rod 32 to move downward. The screw rod 32 drives the conical block 34 to move toward the self-locking block 26. The conical block 34 can open the self-locking block 26. The above is the entire working principle of the utility model.
[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A double pulley with a rope self-locking mechanism, characterized in that: include: A double pulley body (01), a self-locking component (02) is installed on one side below the double pulley body (01), and a limit position component (03) is arranged above the self-locking component (02); A self-locking component (02), the self-locking component (02) comprising a mounting plate (21), a bolt (22) passing through the bottom of the mounting plate (21), a top plate (23) fixedly mounted above the bolt (22), a shaft (24) fixedly arranged above the top plate (23), a fixing plate (25) fixedly arranged above the shaft (24), a self-locking block (26) connected to the outer wall of the shaft (24), a torsion spring (27) arranged inside the top of the self-locking block (26).
2. A double pulley with a rope self-locking mechanism according to claim 1, characterized in that: The limit assembly (03) comprises a fixing plate (31), a screw rod (32) passes through the interior of the fixing plate (31), a guide block (33) is arranged on one side of the screw rod (32), a conical block (34) is fixedly connected below the screw rod (32), a nut pair (35) is connected to the outer wall of the guide block (33), and a handle (36) is fixedly arranged on the outer wall of the nut pair (35).
3. The double pulley with a rope self-locking mechanism according to claim 1, characterized in that: The bolts (22) are provided with holes corresponding to the bolts (22), and the bolts (22) are threadedly connected to the double pulley body (01).
4. The double pulley with a rope self-locking mechanism according to claim 1, characterized in that: The self-locking block (26) is rotationally connected to the shaft rod (24), and the two ends of the torsion spring (27) are fixedly connected to the self-locking block (26) and the fixed disk (25) respectively.
5. The double pulley with a rope self-locking mechanism according to claim 2, characterized in that: The torsion spring (27) is in a compressed state, and the fixing plate (31) is fixedly connected to the fixing disk (25).
6. The double pulley with a rope self-locking mechanism according to claim 2, characterized in that: The screw rod (32) is slidably connected to the fixed plate (31), and the guide block (33) is fixedly connected to the fixed plate (31).
7. The double pulley with a rope self-locking mechanism according to claim 2, characterized in that: The screw rod (32) is provided with a groove corresponding to the guide block (33), and the nut pair (35) is rotatably connected to the fixing plate (31).