A hand chain hoist with both chain stopping and chain dragging functions and a hand chain mechanism

Abstract

The present invention discloses a hand chain mechanism for a hand hoist with both chain stopping and chain dragging functions, comprising a hand chain wheel and a hand chain in a closed state, a hand chain threading chain locker, the chain locker being composed of a chain ring body and a chain stopping body formed by bending the upper part of the chain ring body, the chain stopping body being composed of a chain stopping base bar, a middle partition bar, and a left chain stopping hook and a right chain stopping hook formed by bending the two end sides of the chain stopping base bar toward each other, the hook body of the right chain stopping hook being transitionally connected to the right upper end of the chain ring body, the middle partition bar being transitionally connected to the left upper end of the chain ring body, the hook heads of the left chain stopping hook and the right chain stopping hook both facing the chain stopping base bar, the right limiting hook cavity of the right chain stopping hook passes through the chain ring body, and a space is provided between the left chain stopping hook and the chain ring body for allowing the chain links of the hand chain to enter and exit the left limiting hook cavity of the left chain stopping hook. The double-station chain locker is designed with a chain ring body and a chain stopper, which can jam the hand chain, thereby limiting the pulling of the hand chain to prevent the load from rising or falling.

Description

Technical field

[0001] The invention relates to a hand chain mechanism of a hand chain hoist with both chain stopping and chain dragging functions, belonging to the technical field of safety components of hand chain operating mechanisms. [Background Technology]

[0002] Lifting heavy objects with a hand chain hoist is a professional job. The load is raised and lowered by pulling the hand chain with human power. This operation needs to comply with safety operating procedures. However, the existing hand chain hoist is not equipped with a device to restrict non-professionals from operating the hand chain. Accidents are likely to occur if non-professionals manipulate the hand chain at will. Therefore, the hand chain mechanism of the existing hand chain hoist really needs to be improved. [Summary of the invention]

[0003] The purpose of the present invention is to provide a hand chain mechanism for a hand chain hoist with both chain stopping and chain dragging functions, which can prevent non-professionals from arbitrarily manipulating the hand chain and causing unexpected accidents.

[0004] To this end, the present invention provides the following technical solutions:

[0005] A hand chain hoist with both a chain stopping function and a chain dragging function has a chain mechanism, the chain mechanism comprises a chain wheel and a hand chain in a closed state, the hand chain is hung on the chain wheel and meshed with the chain wheel, the improvement of the chain mechanism is that the hand chain is sleeved with a chain locker, the chain locker is composed of a chain ring body that allows the hand chain to pass freely and a chain stopper body formed by bending the upper part of the chain ring body, the chain stopper body is composed of a chain stopper base bar, a left chain stopper hook and a right chain stopper hook formed by bending the two ends of the chain stopper base bar towards each other, and a chain stopper hook for It is composed of a middle partition bar that separates the left and right chain stop hooks and extends from the chain stop base bar. The hook body of the right chain stop hook is transitionally connected to the right upper end of the through chain ring body, and the middle partition bar is transitionally connected to the left upper end of the through chain ring body, wherein the hook heads of the left chain stop hook and the right chain stop hook are both facing the chain stop base bar, and the right limiting hook cavity of the right chain stop hook passes through the chain opening of the through chain ring body. There is a space between the left chain stop hook and the through chain ring body for the chain links of the hand zipper to enter and exit the left limiting hook cavity of the left chain stop hook.

[0006] A mounting hole for fixing the warning sign is provided at the bottom of the chain ring body.

[0007] The present invention has the following advantages and positive effects:

[0008] After the double-station chain locker is designed with a chain ring structure and a chain stopper structure, the hand zipper can be stuck. Once the left and right links of the hand zipper enter the corresponding left limit hook cavity and right limit hook cavity respectively, the left and right links are respectively stuck therein, achieving the purpose of limiting the pulling of the hand zipper to prevent the load from rising and falling, and can effectively prevent accidents caused by non-professionals or non-relevant operators from arbitrarily manipulating the hand zipper.

[0009] When a professional operator needs to perform lifting operations, he only needs to move the chain links of the hand chain out of the left limit hook and the right limit hook respectively to release the chain jam state of the hand chain and restore the chain dragging action. The hand chain can then be conveniently switched to the lifting operation mode.

[0010] When the equipment or vehicle is lifted off the ground, the left and right links of the hand chain are buckled into the left limit hook cavity and the right limit hook cavity respectively. Mechanical and electrical maintenance personnel can safely and securely enter the bottom of the equipment or vehicle to perform maintenance operations, ensuring personal safety. The chain is engaged and disengaged, which is easy to use, safe and reliable.

Brief Description of the Drawings

[0011] Figure 1 This is a front view of the hand chain hoist of the present invention with the hand chain mechanism (chain locked state);

[0012] Figure 2 yes Figure 1 Partial top view. [Specific implementation method]

[0013] Please refer to Figure 1 、 2 As shown, a hand chain hoist with both a chain stopping function and a chain dragging function is provided with a chain mechanism, the chain mechanism comprising a chain wheel 4 and a hand chain 1 in a closed state, the hand chain 1 being suspended on the chain wheel 4 and meshing with the chain wheel 4, the improvement being that a chain locker is sleeved on the hand chain 1, the chain locker being integrally composed of a chain ring body 2 allowing the hand chain 1 to pass freely and a chain stopper body 3 formed by bending the upper part of the chain ring body 2, the chain stopper body 3 being composed of a chain stopper base strip 31, a left chain stopper hook 32L and a right chain stopper hook 34R formed by bending toward each other at the two ends of the chain stopper base strip 31, and a hook for separating the left chain stopper hook 32L and the right chain stopper hook 34R. It is composed of a middle partition bar 33 extending from the chain stop base bar 31, the hook body of the right chain stop hook 34R is transitionally connected to the right upper end of the chain ring body 2, and the middle partition bar 33 is transitionally connected to the left upper end of the chain ring body 2, wherein the hook heads of the left chain stop hook 32L and the right chain stop hook 34R are both facing the chain stop base bar 31, and the right limiting hook cavity 340R of the right chain stop hook 34R passes through the chain opening 20 of the chain ring body 2, and there is a space between the left chain stop hook 32L and the chain ring body 2 for the chain link (left chain link 11L) of the hand zipper 1 to enter and exit the left limiting hook cavity 320L of the left chain stop hook 32L.

[0014] The hook head of the left chain stopper hook 32L and the hook head of the right chain stopper hook 34R are symmetrical and are arranged on the left and right sides of the middle spacer 33; the left chain stopper hook 32L and the chain ring body 2 have a front and rear space interval C1 (see Figure 2 ); the left chain stop hook 32L and the chain ring body 2 have upper and lower space intervals (not provided Figure 2 left view of the ).

[0015] A mounting hole 200 for fixing a warning sign (not shown) is provided at the bottom of the chain ring body. In this embodiment, the chain ring body is in the shape of an open ring, with the upper part open and the lower part closed (the left and right bottom ends of the lower part of the chain ring body are connected together and the lower part of the chain ring body is designed to be elevated). After the lower part of the chain ring body is closed, the chain locker can always be put on the hand chain in the closed state. When the chain is needed, it can be picked up directly nearby. When the chain is not needed, it is together with the hand chain and does not affect the chain dragging operation at all.

[0016] During the specific installation, first wrap the hand zipper around the hand chain wheel so that the right downward section of the hand zipper passes through the chain opening (inner hole) of the chain ring body, and the left downward section of the hand zipper is located outside the chain ring body. Finally, the tail link of one of the downward sections is cut off and put on the tail link of the other downward section to form a closed hand zipper. At this point, the hanging process of the hand zipper and the combination process of the hand zipper and the chain locker are completed. At this time, the chain is in an unstuck state and can be dragged freely.

[0017] When it is necessary to jam the hand zipper, pinch the chain link body with one hand and take the chain link 11R of the right downward section with the other hand, so that the inner hole of the chain link 11R is hooked and buckled with the right chain stop hook 34R to complete the chain jamming operation of the right downward section. Then perform a similar operation, pinch the chain link body with one hand and take the chain link 11L of the left downward section with the other hand, so that the inner hole of the chain link 11L is hooked and buckled with the left chain stop hook 32L to complete the chain jamming operation of the left downward section. At this time, the entire chain jamming process is completed, and the hand zipper is completely in a chain blocking state and cannot be dragged freely.

[0018] When it is necessary to restore the free chain dragging, perform the opposite operation to complete the chain unblocking operation of the chain links of the left and right drooping sections, and the hand chain can be freely dragged.

Claims

1. A hand chain hoist with both a chain stop and a chain drag function, the hand chain mechanism comprising a hand chain wheel and a hand chain in a closed state, the hand chain hanging from the hand chain wheel and meshing with the hand chain wheel, characterized in that: The hand zipper is sleeved with a chain locker, which is composed of a chain ring body that allows the hand zipper to pass freely and a chain stopper body formed by bending the upper part of the chain ring body. The chain stopper body is composed of a chain stopper base bar, a left chain stopper hook and a right chain stopper hook formed by bending toward each other from the two ends of the chain stopper base bar, and a middle separator bar that is used to separate the left and right chain stopper hooks and extends from the chain stopper base bar. The hook body of the right chain stopper hook is transitionally connected to the right upper end of the chain ring body to form a whole, and the middle separator bar is transitionally connected to the left upper end of the chain ring body to form a whole, wherein, The hook heads of the left chain stop hook and the right chain stop hook are both facing the chain stop base bar, the right limiting hook cavity of the right chain stop hook passes through the chain opening of the chain link body, and there is a space between the left chain stop hook and the chain link body for the chain links of the hand zipper to enter and exit the left limiting hook cavity of the left chain stop hook.

2. The hand chain hoist with both chain stopping and chain dragging functions according to claim 1 is characterized by: A mounting hole for fixing the warning sign is provided at the bottom of the chain ring body.

Images