Lever block anti-slip device

Abstract

The utility model relates to the technical field of lever hoists, in particular to an anti-slip device of a lever hoist. According to the technical scheme, the device comprises a limiting rod, wherein one end of the limiting rod is fixedly connected with a threaded cylinder; the friction plates are movably connected to the outer wall of the limiting rod in a sleeving mode, a transmission gear is arranged between the friction plates, a linkage wheel is fixedly connected to one side of the transmission gear, and a first limiting inclined groove is formed in the outer wall of the linkage wheel; the outer wall of the threaded cylinder is sleeved with the limiting cap in a threaded mode, a limiting clamping sleeve is arranged on one side of the limiting cap, and a limiting clamping ring is arranged on one side of the limiting clamping sleeve in a clamped mode; and the anti-slip assembly is fixedly arranged at one end of the limiting rod and is used for limiting the linkage wheel. According to the utility model, the transmission gear can be quickly limited, so that the transmission gear is more accurately limited, the stable hoisting of a load within a safe range is ensured, the sliding of a hoisted object due to slipping is prevented, and the safety and reliability of the lever block are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hand lever hoist technical field especially relates to a hand lever hoist anti -skidding device. BACKGROUND

[0002] Hand lever hoist is a kind of hand-operated lifting tool, it has compact structure, it is convenient to carry, simple to use and other advantages, is widely used in factory, mine, construction site, warehouse and other places, hand lever hoist can be used to lift and move heavy objects, can also be used to tighten and fix object, its working principle is to make sprocket rotate by pulling handle, to drive chain to ascend or descend, realize the lifting or movement of heavy object.The existing hand lever hoist when hoisting goods, when the load borne by hand lever hoist exceeds its rated load, this leads to the load of load limiting ratchet wheel too large, the torque borne by load limiting ratchet wheel can exceed limit, thereby appearing skidding phenomenon, increase the risk of goods sliding.For this purpose, the utility model provides a kind of hand lever hoist anti -skidding device. SUMMARY

[0003] The utility model aims at the problem that hand lever hoist in background art when hoisting goods, when the load borne by hand lever hoist exceeds its rated load, this leads to the load of load limiting ratchet wheel too large, the torque borne by load limiting ratchet wheel can exceed limit, thereby appearing skidding phenomenon, increase the risk of goods sliding, proposes a kind of hand lever hoist anti -skidding device.

[0004] The utility model discloses a kind of hand lever hoist anti -skidding devices, including: limiting rod, one end of the limiting rod is fixedly connected with threaded cylinder;A group of friction plates is movably sleeved on the outer wall of limiting rod, transmission gear is arranged between the friction plate, the side of transmission gear is fixedly connected with link wheel, the outer wall of link wheel is provided with first limit inclined slot;Limiting cap is sleeved on the outer wall of threaded cylinder, the side of limiting cap is provided with limiting sleeve, the side of limiting sleeve is clampedly provided with limiting snap ring;Anti -skidding assembly for limiting link wheel is fixedly arranged in one end of limiting rod.

[0005] Optionally, the anti-skidding assembly includes a fixed ring, two installation through-slots are formed in the fixed ring, a guide rod is fixedly arranged in the installation through-slots, a sleeve block is movably sleeved on the outer wall of the guide rod, a limiting block is fixedly connected to one end of the sleeve block, a second limit inclined slot is formed in the bottom surface of the limiting block, a spring is sleeved on the outer wall of the guide rod, one end of the spring is fixedly connected with the fixed ring, the other end of the spring is fixedly connected with the sleeve block.

[0006] Optionally, a clamping groove is formed in one end of the limiting rod, a clamping block is fixedly arranged in the inner wall of the limiting sleeve.

[0007] Optionally, one side of the limiting sleeve is provided with a positioning groove, and one side of the limiting ring is fixedly provided with a positioning block.

[0008] Optionally, an inner wall of the mounting groove is provided with a guide groove, and the guide groove is internally slidably provided with a guide block, and the guide block is fixedly connected with the guide rod.

[0009] Optionally, an outer wall of the limiting cap is provided with an anti-skid groove.

[0010] To sum up, the present application has at least one of the following beneficial technical effects:

[0011] The spring pushing sleeve block drives the limiting block to move, the spring reaction speed is faster, the second limiting inclined groove in the bottom surface of the limiting block is in close friction with the first limiting inclined groove in the outer wall of the linkage wheel, the transmission gear can be quickly limited, the transmission gear limitation is more accurate, the load is stably lifted within the safety range, the lifting of the goods is prevented from slipping, and the safety and reliability of the hand-operated hoist are improved.

[0012] Further, the limiting sleeve, the limiting ring, the clamping groove, the clamping block, the positioning groove and the positioning block can position the transmission gear, facilitate disassembly and assembly, improve the stability of the transmission gear rotation, and ensure the safety of lifting. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure schematic view of the hand-operated hoist anti-slip device is given;

[0014] Figure 2 is a schematic Figure 1 split structure schematic view;

[0015] Figure 3 is a schematic Figure 1 cross-sectional structure schematic view.

[0016] REFERENCE SIGNS:

[0017] 1, limiting rod; 2, threaded cylinder; 3, friction plate; 4, transmission gear; 5, linkage wheel; 6, first limiting inclined groove; 7, limiting cap; 8, limiting sleeve; 9, limiting ring;

[0018] 10, anti-slip assembly; 101, fixed ring; 102, mounting groove; 103, guide rod; 104, sleeve block; 105, limiting block; 106, second limiting inclined groove; 107, spring;

[0019] 11, clamping groove; 12, clamping block; 13, positioning groove; 14, positioning block; 15, guide groove; 16, guide block; 17, anti-skid groove. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments.

[0021] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0022] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiments

[0026] As Figure 1 and Figure 2As shown, the utility model provides a kind of hand-pulled gourd anti-slip device, comprising: limit rod 1, one end of limit rod 1 is fixedly connected with threaded cylinder 2, and limit rod 1 and threaded cylinder 2 are integrally formed;A group of friction plates 3 is movably sleeved on the outer wall of limit rod 1, transmission gear 4 is arranged between friction plate 3, can reduce the wear of transmission gear 4, improve the stability of rotation, one side of transmission gear 4 is fixedly connected with linkage wheel 5, first limit inclined groove 6 is opened in the outer wall of linkage wheel 5;Limit cap 7 is threaded on the outer wall of threaded cylinder 2, limit cap 7 is provided with limit sleeve 8 on one side, limit sleeve 8 is clamped and is provided with limit clasp 9 on one side, to facilitate the stable location of transmission gear 4;Anti-slip assembly 10 for limiting linkage wheel 5 is fixedly arranged at one end of limit rod 1, to facilitate the friction of transmission gear 4, to avoid the phenomenon of skidding.

[0027] As Figure 2 And Figure 3 As shown, anti-slip assembly 10 includes fixed ring 101, two installation through slots 102 are opened in fixed ring 101, and installation through slots 102 are symmetrically arranged, guide rod 103 is fixedly arranged in the inside of installation through slots 102, sleeve block 104 is movably sleeved on the outer wall of guide rod 103, can stably guide sleeve block 104, limit block 105 is fixedly connected at one end of sleeve block 104, second limit inclined groove 106 is opened in the bottom surface of limit block 105, and second limit inclined groove 106 is matched with first limit inclined groove 6, can be stably clamped, spring 107 is sleeved on the outer wall of guide rod 103, one end of spring 107 is fixedly connected with fixed ring 101, the other end of spring 107 is fixedly connected with sleeve block 104, can limit second limit inclined groove 106, improve the response speed of second limit inclined groove 106.

[0028] Further, one end of limit rod 1 is provided with clamping groove 11, clamping block 12 is fixedly arranged on the inner wall of limit sleeve 8, and clamping groove 11 and clamping block 12 can be stably clamped with each other, to facilitate the stable location of transmission gear 4.

[0029] Secondly, positioning groove 13 is opened on one side of limit sleeve 8, positioning block 14 is fixedly arranged on one side of limit clasp 9, and positioning block 14 can be stably clamped with positioning groove 13, to facilitate the stable location of limit sleeve 8, improve the stability of rotation of transmission gear 4.

[0030] Further, guide groove 15 is opened in the inner wall of installation through slots 102, guide block 16 is slidably arranged in the inside of guide groove 15, guide block 16 is fixedly connected with guide rod 103, can guide second limit inclined groove 106, make second limit inclined groove 106 guide sliding more stably.

[0031] In addition, anti-skid groove 17 is opened in the outer wall of limit cap 7, to facilitate increasing friction when manually rotating, improve the stability of rotation.

[0032] The working principle of the embodiment is that when the load borne by the hand-operated hoist exceeds the rated load, clockwise rotation, the transmission gear 4 drives the linkage gear 5 to rotate clockwise on the outer wall of the limiting rod 1, the linkage gear 5 drives the first limiting chute 6 to push the second limiting chute 106 on the bottom surface of the limiting block 105 to move, the limiting block 105 pushes the spring 107 to retract and release through the sleeve block 104, the second limiting chute 106 is always in close contact with the first limiting chute 6, so that the hand-operated hoist stably hoists the goods.

[0033] When counterclockwise rotation, the transmission gear 4 drives the linkage gear 5 to rotate counterclockwise on the outer wall of the limiting rod 1, the linkage gear 5 drives the limiting block 105 to rotate through the first limiting chute 6 cooperating with the second limiting chute 106, the limiting block 105 drives the guide rod 103 to rotate through the sleeve block 104, the guide rod 103 drives the fixed ring 101 to rotate at the same time with the transmission gear 4, thereby increasing the friction of the transmission gear 4, ensuring that the load is stably hoisted within the safe range, preventing the hoisted goods from sliding down due to slipping, and improving the safety and reliability of the hand-operated hoist.

[0034] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A hand hoist anti-slip device, characterised in that, Include: Limiting rod (1), one end of the limiting rod (1) is fixedly connected with threaded barrel (2); A set of friction plates (3) movably sleeved on the outer wall of the limiting rod (1), transmission gears (4) are arranged between the friction plates (3), one side of the transmission gears (4) is fixedly connected with a connecting wheel (5), a first limiting inclined groove (6) is formed in the outer wall of the connecting wheel (5); The threaded sleeve is sleeved on the outer wall of the threaded barrel (2), the limiting cap (7) is provided with a limiting sleeve (8) on one side, the limiting sleeve (8) is provided with a limiting ring (9) on one side; The anti-slip assembly (10) is fixedly arranged at one end of the limiting rod (1) for limiting the connecting wheel (5).

2. A hand chain hoist slip prevention device according to claim 1, characterized in that The anti-slip assembly (10) includes a fixed ring (101), two installation through grooves (102) are formed in the fixed ring (101), a guide rod (103) is fixedly arranged in the installation through groove (102), a sleeve block (104) is movably sleeved on the outer wall of the guide rod (103), a limiting block (105) is fixedly connected to one end of the sleeve block (104), a second limiting inclined groove (106) is formed in the bottom surface of the limiting block (105), a spring (107) is sleeved on the outer wall of the guide rod (103), one end of the spring (107) is fixedly connected with the fixed ring (101), the other end of the spring (107) is fixedly connected with the sleeve block (104).

3. A hand chain hoist slip prevention device according to claim 1, wherein One end of the limiting rod (1) is provided with a clamping groove (11), the inner wall of the limiting sleeve (8) is fixedly provided with a clamping block (12).

4. A hand chain hoist slip prevention device according to claim 1, wherein The limiting sleeve (8) is provided with a positioning groove (13) on one side, the limiting ring (9) is fixedly provided with a positioning block (14) on one side.

5. A hand chain hoist slip prevention device according to claim 2, wherein The inner wall of the installation through groove (102) is provided with a guide groove (15), the guide groove (15) is provided with a guide block (16) which is slidably arranged in the guide groove (15), the guide block (16) is fixedly connected with the guide rod (103).

6. A hand chain hoist slip prevention device according to claim 1, wherein The outer wall of the limiting cap (7) is provided with an anti-skid groove (17).

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