Chain block load limiter

Abstract

The utility model discloses a chain block load limiter, which belongs to the field of chain block load limiters and comprises a chain wheel, a chain rope is rotatably wound on the chain wheel, a left limit sleeve is fixedly connected to the left side of the lower end of the chain wheel, a right limit sleeve is fixedly connected to the right side of the lower end of the chain wheel, and smooth sleeves are fixedly connected to the interiors of the left limit sleeve and the right limit sleeve respectively. The left limiting sleeve and the right limiting sleeve are fixedly connected to the left side and the right side of the lower end of the chain wheel correspondingly, the chain rope is limited, and the situation that the chain rope shakes greatly in the moving and lifting process, and work of a hung object is affected is avoided; lubricating oil can be conveniently injected into the left limiting sleeve and the right limiting sleeve, so that the chain rope which moves up and down can be conveniently lubricated, friction generated when the chain rope moves is reduced, the chain rope is protected, and meanwhile, the upper end of the hook is conveniently and automatically shielded and limited by arranging an inserting rod, an inserting block, a spring, an inserting hole and a pulling block on the hook.

Description

Technical Field

[0001] The utility model relates to the field of a hand chain hoist load limiter, and more specifically, to a hand chain hoist load limiter. Background Art

[0002] Hand chain hoists are suitable for short-distance lifting of small equipment and goods. The lifting capacity generally does not exceed 10T, and the maximum can reach 20T. The lifting height generally does not exceed 6m. The shell material of the hand chain hoist is high-quality alloy steel, which is strong and wear-resistant with high safety performance. When the hand chain hoist lifts the heavy object upward, the manual chain is pulled clockwise and the hand chain wheel rotates. When descending, the hand chain is pulled counterclockwise, the brake seat is separated from the brake pad, the ratchet wheel is stationary under the action of the pawl, and the five-tooth long shaft drives the lifting sprocket to run in the opposite direction, so as to smoothly lower the heavy object.

[0003] At present, hand chain hoists are not equipped with load limiters, and it is not easy to limit the sliding chain rope during work, which brings a lot of inconvenience to the work. In addition, the chain rope will also be damaged by friction after being pulled and slid for a long time. At the same time, the hook in the hand chain hoist has no limit shielding device to limit the position, resulting in poor stability of the connection between the hung object and the hook. The object and the hook are easily separated and fall during moving and lifting. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a hand chain hoist load limiter, which fixes the left limit sleeve and the right limit sleeve on the left and right sides of the lower end of the sprocket to limit the chain rope, thereby preventing the chain rope from shaking too much during movement and lifting and affecting the work of hanging objects. In addition, the left limit sleeve and the right limit sleeve are respectively provided with oil absorption blocks, oil collection grooves and oil filling ports, which are convenient for injecting lubricating oil into the interior of the left limit sleeve and the right limit sleeve, thereby facilitating the lubrication of the lifting and moving chain rope, reducing the friction generated when the chain rope moves, and protecting the chain rope. At the same time, by arranging an insertion rod, an insertion block, a spring, a socket and a pulling block on the hook, it is convenient to automatically block and limit the upper end of the hook, thereby preventing the object from detaching from the hook during movement and lifting, thereby increasing the stability of the hanging object.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A hand chain hoist load limiter comprises a sprocket, wherein the sprocket is rotatably connected with a chain rope, and the left side of the lower end of the sprocket is fixedly connected with a left limit sleeve, and the right side of the lower end of the sprocket is fixedly connected with a right limit sleeve, and the inner parts of the left limit sleeve and the right limit sleeve are respectively fixedly connected with smooth sleeves, and the smooth sleeves are fixedly clamped with a plurality of oil suction blocks, and the left limit sleeve and the right limit sleeve are respectively provided with oil collecting grooves, and the left limit sleeve and the right limit sleeve are respectively fixedly connected with oil filling ports, and the left side of the lower end of the left limit sleeve is fixedly connected with a left ear plate, and the right side of the lower end of the left limit sleeve is fixedly connected with a right ear plate, and the left ear plate is rotatably connected with a limit pin through a thread, and the right lower end of the chain rope is fixedly connected with a hook, and the hook is slidably connected with a plug rod, and the left side of the plug rod is fixedly connected with a plug block, and the plug block The rod sliding sleeve is connected with a spring, the hook is provided with a socket, one end of the insertion rod is fixedly connected with a pulling block, and the left limit sleeve and the right limit sleeve are respectively fixedly connected through the lower end of the sprocket to limit the chain rope, so as to avoid the chain rope from shaking too much during moving and lifting and affecting the work of hanging objects, and the left limit sleeve and the right limit sleeve are respectively provided with oil absorption blocks, oil collecting grooves and oil filling ports, which are convenient for injecting lubricating oil into the inside of the left limit sleeve and the right limit sleeve, so as to facilitate lubrication of the lifting and moving chain rope, reduce the friction generated when the chain rope moves, and protect the chain rope. At the same time, by arranging the insertion rod, the insertion block, the spring, the socket and the pulling block on the hook, it is convenient to automatically block and limit the upper end of the hook, so as to avoid the object from detaching from the hook during moving and lifting, thereby increasing the stability of the hanging object.

[0007] Furthermore, the left limit sleeve and the right limit sleeve are of the same model and size, and the material of the oil absorption block is a water-absorbing sponge. Through the provision of the oil absorption block, it is not only convenient to slowly apply lubricating oil to the chain rope, but also to avoid the rapid loss of lubricating oil, thereby facilitating the slow and long-term lubrication of the chain rope.

[0008] Furthermore, the interior of the oil collecting groove is connected with the interior of the oil filling port, and the limit pin rotates through the chain rope, which is composed of a plurality of annular rings connected and combined. The chain rope is a prior art and will not be described in detail in this technical solution.

[0009] Furthermore, the limit pin is threadedly rotated through the right ear plate, and one end of the spring is fixedly connected to a side surface of the plug block. The setting of the spring facilitates automatic resetting of the plug rod and the plug block, and automatically blocks the upper end of the limit hook.

[0010] Furthermore, the other end of the spring is fixedly connected to one side surface of the hook, and the plug block slides through the insertion hole. By sliding the plug block through the insertion hole, it is convenient for the plug rod to block the upper end of the limit hook and increase the stability of the plug rod limit blocking.

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] (1) In this scheme, the left limit sleeve and the right limit sleeve are fixedly connected to the lower end of the sprocket on the left and right sides respectively, so as to limit the chain rope and prevent the chain rope from shaking greatly during the movement and lifting, thereby affecting the work of hanging objects. In addition, the left limit sleeve and the right limit sleeve are respectively provided with an oil absorption block, an oil collection groove and an oil filling port, so as to facilitate the injection of lubricating oil into the inside of the left limit sleeve and the right limit sleeve, thereby facilitating the lubrication of the lifting and moving chain rope, reducing the friction generated when the chain rope moves, and protecting the chain rope. At the same time, by arranging a plug rod, a plug block, a spring, a socket and a pull block on the hook, it is convenient to automatically block and limit the upper end of the hook, so as to prevent the object from detaching from the hook during the movement and lifting, thereby increasing the stability of the hanging object.

[0013] (2) The left limit sleeve and the right limit sleeve have the same size and model. The oil absorption block is made of a water-absorbing sponge. The setting of the oil absorption block not only facilitates the slow application of lubricating oil to the chain rope, but also prevents the lubricating oil from being lost quickly, thus facilitating the slow and long-term lubrication of the chain rope.

[0014] (3) The interior of the oil collecting groove is connected with the interior of the oil filling port, and the limit pin rotates through the chain rope. The chain rope is composed of a plurality of annular rings connected and combined. The chain rope is a prior art and will not be described in detail in this technical solution.

[0015] (4) The limit pin is rotated through the right ear plate through a thread, and one end of the spring is fixedly connected to a side surface of the plug block. Through the setting of the spring, the plug rod and the plug block are automatically reset and the upper end of the limit hook is automatically blocked.

[0016] (5) The other end of the spring is fixedly connected to one side surface of the hook, and the plug block slides through the insertion hole. By sliding the plug block through the insertion hole, it is convenient for the plug rod to block the upper end of the limit hook, and the stability of the plug rod limit blocking is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional view of the overall structure of the utility model;

[0018] Figure 2 It is a partial enlarged schematic diagram of the sprocket of the utility model;

[0019] Figure 3 It is an enlarged top sectional view of the left limit sleeve of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1 sprocket, 2 chain rope, 3 left limit sleeve, 4 right limit sleeve, 5 smooth sleeve, 6 oil suction block, 7 oil collecting groove, 71 oil filling port, 8 left ear plate, 9 right ear plate, 10 limit pin, 11 hook, 12 plug rod, 13 plug block, 14 spring, 15 socket, 16 pull block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 A hand chain hoist load limiter comprises a sprocket 1, the sprocket 1 is rotatably connected with a chain rope 1, a left limit sleeve 3 is fixedly connected to the left side of the lower end of the sprocket 1, a right limit sleeve 4 is fixedly connected to the right side of the lower end of the sprocket 1, and a smooth sleeve 5 is fixedly connected to the inside of the left limit sleeve 3 and the right limit sleeve 4 respectively, and a plurality of oil suction blocks 6 are fixedly clamped on the smooth sleeve 5, the left limit sleeve 3 and the right limit sleeve 4 are respectively provided with an oil collecting groove 7, and the left limit sleeve 3 and the right limit sleeve 4 are respectively fixedly connected with an oil filling port 71, a left ear plate 8 is fixedly connected to the left side of the lower end of the left limit sleeve 3, and a right ear plate 9 is fixedly connected to the right side of the lower end of the left limit sleeve 3, and the left ear plate 8 is rotatably connected to the limit pin 10 through a thread, a hook 11 is fixedly connected to the lower right end of the chain rope 1, and the hook 11 is slidably connected to a plug rod 12, and a plug block 13 is fixedly connected to the left side of the plug rod 12, and the plug rod 12 is slidably sleeved with a spring 14, and the hook 11 is provided with a plug hole 15, and one end of the plug rod 12 is fixedly connected with a pull block 16, which is fixedly connected to the left limit sleeve 3 and the right limit sleeve 4 through the lower end of the sprocket 1, respectively, to limit the chain rope 2, to prevent the chain rope 2 from shaking greatly during the movement and lifting and affecting the work of hanging objects, and the left limit sleeve 3 and the right limit sleeve 4 are respectively provided with an oil absorption block 6, an oil collection groove 7 and an oil filling port 71, which is convenient for injecting lubricating oil into the left limit sleeve 3 and the right limit sleeve 4, so as to facilitate lubrication of the lifting and moving chain rope 2, reduce the friction generated when the chain rope 2 moves, and protect the chain rope 2. At the same time, by arranging the plug rod 12, the plug block 13, the spring 14, the plug hole 15 and the pull block 16 on the hook 11, it is convenient to automatically block and limit the upper end of the hook 11, to prevent the object from detaching from the hook 11 during the movement and lifting, thereby increasing the stability of the hanging object.

[0024] See also Figure 1 The left limit sleeve 3 and the right limit sleeve 4 are of the same model and size. The material of the oil absorption block 6 is a water-absorbing sponge. Through the setting of the oil absorption block 6, it is not only convenient to slowly apply lubricating oil to the chain rope 2, but also to avoid the rapid loss of lubricating oil, which is convenient for slow and long-term lubrication of the chain rope 2. The interior of the oil collecting groove 7 is connected with the interior of the oil filling port 71, and the limit pin 10 rotates through the chain rope 1. The chain rope 2 is composed of a plurality of annular rings connected and combined. The chain rope 2 is a prior art and this technical solution will not be repeated.

[0025] See also Figure 1The limit pin 10 is threadedly rotated through the right ear plate 9, and one end of the spring 14 is fixedly connected to the side surface of the plug block 13. Through the setting of the spring 14, the plug rod 12 and the plug block 13 are automatically reset, and the upper end of the limit hook 11 is automatically blocked. The other end of the spring 14 is fixedly connected to the side surface of the hook 11, and the plug block 13 slides through the hole 15. Through the plug block 13 sliding through the hole 15, it is convenient for the plug rod 12 to block the upper end of the limit hook 11, and the stability of the limit blocking of the plug rod 12 is increased.

[0026] By removing the plug of the oil filling port 71, the lubricating oil can be injected into the inside of the oil filling port 71, and then flow to the oil collecting groove 7, and then be absorbed by the oil absorption block 6, and then slowly lubricate the sliding chain rope 2, and the plug block 13 can be disengaged from the socket 15 by moving and pulling the pull block 16, and then the object to be hung can be moved and hung on the hook 11, and then the plug block 13 and the socket 15 can be automatically engaged through the elastic action of the spring 14, and the left limit sleeve 3 and the right limit sleeve 4 are fixedly connected to the left and right sides of the lower end of the sprocket 1, which play a limiting role on the chain rope 2 to prevent the chain rope 2 from being relatively large during the moving lifting. Large shaking will affect the work of hanging objects, and the left limit sleeve 3 and the right limit sleeve 4 are respectively provided with an oil absorption block 6, an oil collecting groove 7 and an oil filling port 71, which is convenient for injecting lubricating oil into the left limit sleeve 3 and the right limit sleeve 4, so as to facilitate the lubrication of the lifting and moving chain rope 2, reduce the friction generated when the chain rope 2 moves, and protect the chain rope 2. At the same time, by arranging a plug rod 12, a plug block 13, a spring 14, a socket 15 and a pull block 16 on the hook 11, it is convenient to automatically block and limit the upper end of the hook 11 to prevent the object from detaching from the hook 11 during movement and increase the stability of the hanging object.

[0027] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A hand chain hoist load limiter, comprising a sprocket (1), characterized in that: The sprocket (1) is rotatably connected with a chain rope (2). The left side of the lower end of the sprocket (1) is fixedly connected with a left limiting sleeve (3). The right side of the lower end of the sprocket (1) is fixedly connected with a right limiting sleeve (4). The insides of the left limiting sleeve (3) and the right limiting sleeve (4) are respectively fixedly connected with smooth sleeves (5). The smooth sleeves (5) are fixedly connected with a plurality of oil absorption blocks (6). The left limiting sleeve (3) and the right limiting sleeve (4) are respectively provided with oil collecting grooves (7). The left limiting sleeve (3) and the right limiting sleeve (4) are respectively fixedly connected with oil filling ports (71). A left ear plate (8) is fixedly connected to the left side of the lower end, a right ear plate (9) is fixedly connected to the right side of the lower end of the left limit sleeve (3), the left ear plate (8) is rotatably connected to the limit pin (10) through a thread, a hook (11) is fixedly connected to the lower right end of the chain rope (2), the hook (11) is slidably connected to an insertion rod (12), an insertion block (13) is fixedly connected to the left side of the insertion rod (12), a spring (14) is slidably sleeved on the insertion rod (12), the hook (11) is provided with a socket (15), and one end of the insertion rod (12) is fixedly connected to a pull block (16).

2. A hand chain hoist load limiter according to claim 1, characterized in that: The left limiting sleeve (3) and the right limiting sleeve (4) are of the same model and size, and the material of the oil absorbing block (6) is a water-absorbing sponge.

3. A hand chain hoist load limiter according to claim 1, characterized in that: The interior of the oil collecting groove (7) is connected to the interior of the oil filling port (71), and the limit pin (10) rotates and passes through the chain rope (2).

4. A hand chain hoist load limiter according to claim 1, characterized in that: The limit pin (10) is screwed through the right ear plate (9) through a thread, and one end of the spring (14) is fixedly connected to a side surface of the insert block (13).

5. The hand chain hoist load limiter according to claim 1, characterized in that: The other end of the spring (14) is fixedly connected to a side surface of the hook (11), and the inserting block (13) slides through the inserting hole (15).

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