Chain block with protective cover capable of rotating by 360 degrees

Abstract

The utility model relates to the technical field of chain blocks, and discloses a chain block with a 360-degree rotating protective cover, which comprises a chain block main body, a rotating mechanism is arranged on the front side of the chain block main body, a hook mechanism is arranged at the top of the chain block main body, and the protective cover is slidably mounted in a rotating groove. A pull block rebounds under the action of a spring A, so that the protection cover is installed, does not fall off and rotates to a proper angle, a rotating column is clamped in a rotating groove under the action of a spring B, a rotating handle is rotated to enable a limiting block B to be clamped in the rotating groove, and the position of the protection cover is fixed; the protective cover can be adjusted according to the angle, affected by the force exerting habit and the height of a user, of the hand-pulled chain, more labor is saved, convenience is achieved, an anti-disengaging block rebounds under the effect of a spring C, the anti-disengaging block rotates to make contact with a hook outside a fixing column, the hook cannot fall off when the hook is pulled for use, and the safety of the user is improved. And the use is safe.

Description

Technical Field

[0001] The utility model relates to the technical field of hand chain hoists, in particular to a hand chain hoist with a protective cover that rotates 360 degrees. Background Art

[0002] The hand chain hoist is also called the fairy gourd, chain hoist, fall chain, never-falling weight, and manual hoist. It is a manual lifting machinery that is simple to use and easy to carry. It is also called "chain hoist" or "fall chain". It is safe and reliable, easy to maintain, has high mechanical efficiency, small chain tension, light weight and easy to carry, beautiful appearance, small size and durability.

[0003] According to the description of a hand chain hoist with a labor-saving structure and its implementation method disclosed in the patent website (authorization announcement number: CN 116119563 B), "The present invention discloses a hand chain hoist with a labor-saving structure and its implementation method, which belongs to the field of hand chain hoists. A hand chain hoist with a labor-saving structure of the present invention includes: a protective cover, a lifting chain is wound inside the protective cover, a sprocket is installed in the middle of the inside of the protective cover, and a first transmission gear for transmission is installed on one side of the first sprocket; a mounting plate, a second sprocket is installed inside the mounting plate; a support frame plate, a steering wheel is installed on the upper end of the support frame plate, and a movable fan plate is installed on the upper end of the connecting arm. The present invention is prone to wear and tear, and there are too few supporting and protective structures, which is not conducive to long-term work. Through the symmetrical protective cover and mounting plate, the position balance of the hand chain hoist body is maintained, and the work quality is improved. The two sets of clutch gears inside the hand chain hoist body protect the rotation effect of the transmission gear, and the torque is increased through the transmission of the gear, thereby achieving a labor-saving effect.".

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use, the utility model allows the first transmission gear and the second transmission gear to idle, thereby protecting the gear structure, reducing wear and improving work quality. However, when the object to be lifted is close to the hook of the hand chain hoist, the hand chain hoist cannot be pulled down or some models of hand chain hoists can only be pulled outward horizontally along the top of the hand chain wheel cover, causing many limitations in the lifting process, seriously affecting the work efficiency and even personal safety of the process. Therefore, it is necessary to improve a hand chain hoist with a protective cover that rotates 360 degrees to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a hand chain hoist with a protective cover that can rotate 360 ​​degrees, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hand chain hoist with a rotating protective cover, comprising a hand chain hoist body, a hand chain is arranged inside the hand chain hoist body, a lifting chain is arranged inside the hand chain hoist body, a pull hook is arranged at one end of the lifting chain away from the hand chain hoist body, a rotating mechanism is arranged on the front of the hand chain hoist body, and a hook mechanism is arranged on the top of the hand chain hoist body.

[0008] The rotating mechanism comprises a mounting assembly and a rotating positioning assembly, and the rotating positioning assembly is arranged inside the mounting assembly.

[0009] Preferably, the mounting assembly includes a rotating groove, which is opened inside the hand chain hoist body, a protective cover is rotatably installed inside the rotating groove, a limit block A is fixedly installed outside the protective cover, two blocks are slidably installed inside the hand chain hoist body, a pulling block is fixedly installed on the front of the block, a fixing plate is fixedly installed on the front of the hand chain hoist body, a spring A is fixedly installed on the side of the fixing plate close to the stop block, and the pulling block rebounds under the action of the spring A and the fixing plate.

[0010] Preferably, one end of the spring A away from the fixed plate is fixedly installed with the pulling block, and there are two of each of the blocking block, pulling block, fixed plate and fixed plate, and they are centrally symmetrical. The limit block A is movably installed inside the main body of the hand winch, and the limit block A slides into the slot to block it, so that the protective cover is installed and will not fall off.

[0011] Preferably, the rotation positioning assembly includes a rotating column, which is movably installed inside the protective cover, a circular ring is fixedly installed on the outside of the rotating column, a turning handle is fixedly installed on the outside of the rotating column, a spring B is fixedly installed on the inside of the circular ring, a positioning hole is opened inside the main body of the hand chain hoist, a limit block B is fixedly installed on the outside of the rotating column, and the limit block B is clamped in the rotating groove to fix the position of the protective cover, that is, the notch of the handle chain of the protective cover is aligned with the direction of the desired force and locked.

[0012] Preferably, the rotating column is movably installed inside the hand hoist body, the limit block B is movably installed inside the positioning hole, the end of the spring B away from the ring is fixedly installed on the protective cover, and the rotating column is clamped in the rotating groove under the action of the spring B.

[0013] Preferably, the hook mechanism includes a mounting block, the mounting block is fixedly mounted on the outside of the hand chain hoist body, a hook is fixedly mounted on the top of the mounting block, a vertical plate is fixedly mounted on the top of the mounting block, a protrusion is fixedly mounted on the right side of the vertical plate, a fixed column is fixedly mounted inside the protrusion, an anti-slip block is rotatably mounted outside the fixed column, a spring C is fixedly mounted on the left side of the anti-slip block, and the anti-slip block rebounds under the action of the spring C.

[0014] Preferably, one end of the spring C away from the anti-drop block is fixedly mounted on the vertical plate, and one end of the anti-drop block away from the fixed column contacts one end of the hook away from the mounting block, so that it will not fall off when being pulled for use, making it safe to use.

[0015] Compared with the prior art, the utility model provides a hand chain hoist with a protective cover that rotates at a certain degree, which has the following beneficial effects:

[0016] 1. The hand chain hoist with a rotating protective cover is slidably installed in the rotating groove. The pull block rebounds under the action of spring A, so that the protective cover is installed and will not fall off. It is rotated to a suitable angle, and the rotating column is clamped in the rotating groove under the action of spring B. The rotating handle is rotated to make the limit block B clamped in the rotating groove, so that the position of the protective cover is fixed, that is, the notch of the protective cover handle chain is aligned with the direction of the desired force and locked, so that the force direction can be adjusted, and the protective cover can be adjusted according to the user's force habits and the angle of the hand chain affected by the height, which makes it more labor-saving and convenient.

[0017] 2. For the hand chain hoist with rotating protective cover, the anti-drop block moves closer to the inside of the hook under the action of force, so that the hook is installed. Then the anti-drop block rebounds under the action of spring C, so that the anti-drop block rotates outside the fixed column and contacts the hook, so that it will not fall off when installed for pulling, making it safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the rotating mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the stopper and its connected mechanism of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the rotating column and the mechanism connected thereto of the utility model;

[0024] Figure 6This is a schematic diagram of the hook mechanism structure of the utility model.

[0025] In the figure: 1. main body of hand chain hoist; 2. hand chain; 3. lifting chain; 4. pull hook; 5. rotating mechanism; 51. mounting assembly; 511. rotating groove; 512. protective cover; 513. limit block A; 514. stop block; 515. pull block; 516. fixed plate; 517. spring A; 52. rotation positioning assembly; 521. positioning hole; 522. rotating column; 523. ring; 524. turning handle; 525. spring B; 526. limit block B; 6. hook mechanism; 61. mounting block; 62. hook; 63. vertical plate; 64. protrusion; 65. fixed column; 66. anti-drop block; 67. spring C. DETAILED DESCRIPTION

[0026] 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.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1:

[0029] See also Figure 1-5 The utility model provides a technical solution: a hand chain hoist with a protective cover that rotates 360 degrees, comprising a hand chain hoist body 1, a hand chain 2 is arranged inside the hand chain hoist body 1, a lifting chain 3 is arranged inside the hand chain hoist body 1, a hook 4 is arranged at one end of the lifting chain 3 away from the hand chain hoist body 1, a rotating mechanism 5 is arranged on the front of the hand chain hoist body 1, and a hook mechanism 6 is arranged on the top of the hand chain hoist body 1.

[0030] The rotating mechanism 5 includes a mounting assembly 51 and a rotating positioning assembly 52 . The rotating positioning assembly 52 is disposed inside the mounting assembly 51 .

[0031] Furthermore, the mounting assembly 51 includes a rotating groove 511, which is disposed inside the hand hoist body 1. A protective cover 512 is rotatably installed inside the rotating groove 511, and a limiting block A513 is fixedly installed outside the protective cover 512. Two blocks 514 are slidingly installed inside the hand hoist body 1, and a pull block 515 is fixedly installed on the front of the block 514. A fixed plate 516 is fixedly installed on the front of the hand hoist body 1, and a spring A517 is fixedly installed on the side of the fixed plate 516 close to the block 514. The pull block 515 rebounds under the action of the spring A517 and the fixed plate 516.

[0032] Furthermore, one end of the spring A517 away from the fixed plate 516 is fixedly installed with the pull block 515, and there are two stop blocks 514, two pull blocks 515, and two fixed plates 516, and they are centrally symmetrical. The limit block A513 is movably installed inside the hand winch body 1, and the limit block A513 slides into the groove to block it, so that the protective cover 512 is installed and will not fall off.

[0033] Furthermore, the rotation positioning assembly 52 includes a rotating column 522, which is movably installed inside the protective cover 512. A circular ring 523 is fixedly installed on the outside of the rotating column 522. A turning handle 524 is fixedly installed on the outside of the rotating column 522. A spring B525 is fixedly installed inside the circular ring 523. A positioning hole 521 is opened inside the hand chain hoist body 1. A limiting block B526 is fixedly installed on the outside of the rotating column 522. The limiting block B526 is clamped in the rotating groove 511, so that the position of the protective cover 512 is fixed, that is, the notch of the handle chain 2 of the protective cover 512 is aligned with the direction of the desired force and locked.

[0034] Furthermore, the rotating column 522 is movably installed inside the hand hoist body 1, the limit block B526 is movably installed inside the positioning hole 521, the end of the spring B525 away from the ring 523 is fixedly installed on the protective cover 512, and the rotating column 522 is clamped in the rotating groove 511 under the action of the spring B525.

[0035] Embodiment two:

[0036] See also Figure 6 , and combined with Example 1, it is further obtained that the hook mechanism 6 includes a mounting block 61, the mounting block 61 is fixedly installed on the outside of the hand hoist body 1, a hook 62 is fixedly installed on the top of the mounting block 61, a vertical plate 63 is fixedly installed on the top of the mounting block 61, a protrusion 64 is fixedly installed on the right side of the vertical plate 63, a fixed column 65 is fixedly installed inside the protrusion 64, an anti-slip block 66 is rotatably installed outside the fixed column 65, a spring C67 is fixedly installed on the left side of the anti-slip block 66, and the anti-slip block 66 rebounds under the action of the spring C67.

[0037] Furthermore, one end of the spring C67 away from the anti-slip block 66 is fixedly installed with the vertical plate 63, and one end of the anti-slip block 66 away from the fixed column 65 is in contact with one end of the hook 62 away from the mounting block 61, so that it will not fall off when being pulled for use, making it safe to use.

[0038] In actual operation, when this device is used, the two pull blocks 515 are pulled to increase the distance between them, so that the distance between the two stoppers 514 becomes larger, and the protective cover 512 is slidably installed in the rotating groove 511, and the pull block 515 is loosened so that the pull block 515 rebounds under the action of the spring A517 and the fixing plate 516, so that the two stoppers 514 are close to the limit block A513 and slide into the slot to block it, so that the protective cover 512 is installed and will not fall off, and it is rotated to a suitable angle so that the notch of the protective cover 512 handle chain 2 is aligned with the direction of the desired force, and the turning handle 524 is loosened so that the rotating column 522 is clamped in the rotating groove 511 under the action of the spring B525, and the turning handle 524 is rotated so that The limit block B526 is clamped in the rotating groove 511, so that the position of the protective cover 512 is fixed, that is, the notch of the protective cover 512 and the handle chain 2 is aligned with the desired direction of force and locked, so that the direction of force can be adjusted, and the protective cover 512 can be adjusted according to the user's force habits and the angle of the hand chain 2 affected by the height, making it more labor-saving and convenient. When the device is in use, the anti-slip block 66 approaches the inner side of the hook 62 under the action of force, so that the hook 62 is installed, and then the anti-slip block 66 rebounds under the action of the spring C67, so that the anti-slip block 66 rotates outside the fixed column 65 to contact the hook 62, so that it will not fall off when installed for pulling, making it safe to use.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A hand chain hoist with a protective cover that can rotate 360 ​​degrees, comprising a hand chain hoist body (1), characterized in that: A hand chain (2) is arranged inside the hand chain hoist body (1), a lifting chain (3) is arranged inside the hand chain hoist body (1), a pull hook (4) is arranged at one end of the lifting chain (3) away from the hand chain hoist body (1), a rotating mechanism (5) is arranged on the front of the hand chain hoist body (1), and a hook mechanism (6) is arranged on the top of the hand chain hoist body (1); The rotating mechanism (5) comprises a mounting assembly (51) and a rotating positioning assembly (52), wherein the rotating positioning assembly (52) is arranged inside the mounting assembly (51).

2. A hand chain hoist with a protective cover that rotates 360 degrees according to claim 1, characterized in that: The mounting assembly (51) comprises a rotating groove (511), wherein the rotating groove (511) is arranged inside the hand chain hoist body (1), a protective cover (512) is rotatably mounted inside the rotating groove (511), a limiting block A (513) is fixedly mounted outside the protective cover (512), two stoppers (514) are slidably mounted inside the hand chain hoist body (1), a pulling block (515) is fixedly mounted on the front of the stoppers (514), a fixing plate (516) is fixedly mounted on the front of the hand chain hoist body (1), and a spring A (517) is fixedly mounted on the side of the fixing plate (516) close to the stoppers (514).

3. A hand chain hoist with a protective cover that rotates 360 degrees according to claim 2, characterized in that: One end of the spring A (517) away from the fixed plate (516) is fixedly mounted to the pulling block (515); there are two of each of the blocking block (514), the pulling block (515), the fixed plate (516), and the fixed plate (516), which are centrally symmetrical; and the limiting block A (513) is movably mounted inside the hand chain hoist body (1).

4. A hand chain hoist with a protective cover that rotates 360 degrees according to claim 2, characterized in that: The rotary positioning assembly (52) includes a rotating column (522), the rotating column (522) is movably mounted inside the protective cover (512), a circular ring (523) is fixedly mounted on the outside of the rotating column (522), a turning handle (524) is fixedly mounted on the outside of the rotating column (522), a spring B (525) is fixedly mounted on the inside of the circular ring (523), a positioning hole (521) is opened inside the hand chain hoist body (1), and a limiting block B (526) is fixedly mounted on the outside of the rotating column (522).

5. A hand chain hoist with a protective cover that rotates 360 degrees according to claim 4, characterized in that: The rotating column (522) is movably mounted inside the hand chain hoist body (1), the limiting block B (526) is movably mounted inside the positioning hole (521), and one end of the spring B (525) away from the ring (523) is fixedly mounted to the protective cover (512).

6. The hand chain hoist with 360-degree rotating protective cover according to claim 1, characterized in that: The hook mechanism (6) comprises a mounting block (61), wherein the mounting block (61) is fixedly mounted on the outside of the hand chain hoist body (1), a hook (62) is fixedly mounted on the top of the mounting block (61), a vertical plate (63) is fixedly mounted on the top of the mounting block (61), a protrusion (64) is fixedly mounted on the right side of the vertical plate (63), a fixing column (65) is fixedly mounted inside the protrusion (64), an anti-slip block (66) is rotatably mounted outside the fixing column (65), and a spring C (67) is fixedly mounted on the left side of the anti-slip block (66).

7. A hand chain hoist with a protective cover that rotates 360 degrees according to claim 6, characterized in that: One end of the spring C (67) away from the anti-slip block (66) is fixedly mounted on the vertical plate (63), and one end of the anti-slip block (66) away from the fixed column (65) contacts one end of the hook (62) away from the mounting block (61).

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