Electric hoist protection mechanism

Abstract

The utility model belongs to the technical field of electric hoists, and particularly relates to an electric hoist protection mechanism which comprises a hoist body, a load chain arranged on the hoist body and a protection assembly arranged at the bottom of a shell of the hoist body, a lifting hook is arranged on the load chain, and when the lifting hook ascends to the top during lifting, the protection assembly is arranged at the bottom of the shell of the hoist body. When a lower roller slides outwards in a lower guide groove, the lower roller is attached to a rubber limiting strip firstly, at the moment, upward jacking force is applied to the rubber limiting strip, the rubber limiting strip is pushed to move upwards, an angle between a right connecting rod and a left connecting rod is pushed through an L-shaped lower supporting block to change, the left connecting rod pushes the lower roller to slide outwards in the lower guide groove, and buffering is conducted through a lower spring; the right connecting rod and the left connecting rod push the upper right rolling wheel and the upper left rolling wheel to slide outwards in the upper guide groove correspondingly, further buffering is achieved through the upper spring, impact force caused by top punching is reduced, damage to the electric hoist caused by top punching is reduced, and the service life of the electric hoist is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of electric hoist technology, and specifically relates to an electric hoist protection mechanism. Background Technology

[0002] Electric hoists are specialized lifting devices installed on overhead cranes and gantry cranes. They are characterized by their small size, light weight, simple operation, and ease of use, making them suitable for industrial and mining enterprises, warehouses, docks, and other similar locations. Electric hoists have a compact structure, with the motor axis perpendicular to the drum axis, and employ a worm gear drive. Their disadvantages include large length and width dimensions, bulky structure, low mechanical efficiency, and difficulty in manufacturing. The hydraulic system features dual control; both the overflow regulating valve and the magnetic contact pressure gauge provide precise pressure control. The electrical control system utilizes low-voltage control, enhancing the safety of the control system.

[0003] When the electric hoist's safety mechanism is in operation, it needs to lift large and frequent items. During lifting, the items are prone to hitting the top, and the buffering effect is poor, causing collisions with the electric hoist. Utility Model Content

[0004] To address the problems mentioned in the background section, this utility model provides a protection mechanism for an electric hoist, including a hoist body, a load-bearing chain mounted on the hoist body, and a protective component mounted on the bottom of the hoist body casing. The load-bearing chain is equipped with a hook.

[0005] The protective component includes an upper support plate fixed to the bottom of the hoist body shell, and the upper support plate is provided with a rubber limiting strip through a buffer mechanism.

[0006] As a protective mechanism for an electric hoist according to the present invention, preferably, the buffer mechanism includes an upper support block fixed to the bottom of the upper support plate and an L-shaped lower support block fixed to the top of the rubber limiting strip.

[0007] As a protective mechanism for an electric hoist according to this utility model, preferably, an upper guide groove is provided on the upper support block, an upper left roller and an upper right roller are engaged on the upper guide groove, and an upper guide rod is provided through the upper guide groove.

[0008] As a protective mechanism for an electric hoist according to this utility model, preferably, the upper left roller and the upper right roller are both adjusted on the upper guide rod, and the three sections of the upper guide rod separated by the upper left roller and the upper right roller are all adjusted with upper springs.

[0009] As a protective mechanism for an electric hoist according to this utility model, preferably, the upper guide groove is matched with the upper left roller and the upper right roller, and the upper left roller and the upper right roller slide in the left and right directions on the upper guide groove.

[0010] As a protective mechanism for an electric hoist according to this utility model, preferably, a right connecting rod is movably arranged between the top left end of the L-shaped lower support block and the upper right roller.

[0011] As a protective mechanism for an electric hoist according to this utility model, preferably, the right end of the L-shaped lower support block is provided with a lower guide groove, a pair of lower rollers that slide left and right are engaged on the lower guide groove, a support is fixed on the lower rollers, and a lower guide rod is provided inside the lower guide groove.

[0012] As a protective mechanism for an electric hoist according to this utility model, preferably, a lower spring is sleeved on the two lower guide rods separated by the lower roller, and a left connecting rod that is movably connected to the right connecting rod is movably arranged between the support and the upper roller.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] When the hook rises to the top during lifting, it first engages with the rubber limit strip. At this point, it exerts an upward force on the rubber limit strip, pushing it upward. Simultaneously, the L-shaped lower support block causes the right and left connecting rods to change angle. The left connecting rod then pushes the lower roller to slide outward within the lower guide groove, with the lower spring providing cushioning. At the same time, the right and left connecting rods push the upper right and upper left rollers to slide outward within the upper guide groove, with the upper spring providing further cushioning. This reduces the impact force caused by the top impact, minimizes damage to the electric hoist, and increases the service life of the electric hoist. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of the present utility model;

[0018] Figure 3 This is a schematic diagram of the protective component structure of this utility model;

[0019] Figure 4 This is a front view structural diagram of the protective component of this utility model;

[0020] In the picture:

[0021] The gourd itself;

[0022] Heavy-duty chains;

[0023] Protective components; 31. Upper support plate; 32. Buffer mechanism; 321. Upper support block; 322. L-shaped lower support block; 323. Upper guide groove; 324. Upper left roller; 325. Upper right roller; 326. Upper guide rod; 327. Upper spring; 33. Rubber limit strip; 34. Right connecting rod; 35. Lower guide groove; 351. Lower roller; 352. Support; 353. Lower guide rod; 354. Lower spring; 36. Left connecting rod;

[0024] Hook. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0026] like Figure 1-4 As shown;

[0027] An electric hoist protection mechanism includes a hoist body 1.

[0028] In this implementation plan: In order to solve the technical problems existing in the prior art, such as the "electric hoist protection mechanism needs to lift large and frequent items when working, which is prone to top-end collision during lifting, resulting in poor buffering effect and collision with the electric hoist" in the background art above, in combination with actual use, this problem is obviously a real and difficult problem to solve. Therefore, in order to solve this technical problem, an electric hoist protection mechanism is provided on the basis.

[0029] like Figure 1-4 As shown in the figure;

[0030] In conjunction with the above, it also includes a load-bearing chain 2 installed on the hoist body 1, and a protective component 3 installed at the bottom of the outer shell of the hoist body 1. The load-bearing chain 2 is provided with a hook 4.

[0031] The protective component 3 includes an upper support plate 31 fixed to the bottom of the outer shell of the hoist body 1, and the upper support plate 31 is provided with a rubber limiting strip 33 through a buffer mechanism 32.

[0032] In an optional embodiment, the buffer mechanism 32 includes an upper support block 321 fixed to the bottom of the upper support plate 31, and an L-shaped lower support block 322 fixed to the top of the rubber limiting strip 33.

[0033] In an optional embodiment, the upper support block 321 is provided with an upper guide groove 323, and an upper left roller 324 and an upper right roller 325 are engaged in the upper guide groove 323. An upper guide rod 326 is provided through the upper guide groove 323.

[0034] In an optional embodiment, the upper left roller 324 and the upper right roller 325 are both adjusted on the upper guide rod 326, and the three sections of the upper guide rod 326 separated by the upper left roller 324 and the upper right roller 325 are all adjusted with upper springs 327.

[0035] In an optional embodiment, the upper guide groove 323 is matched with the upper left roller 324 and the upper right roller 325, and both the upper left roller 324 and the upper right roller 325 slide in the left and right directions on the upper guide groove 323.

[0036] In an optional embodiment, a right connecting rod 34 is movably disposed between the top left end of the L-shaped lower support block 322 and the upper right roller 325.

[0037] In an optional embodiment, the right end of the L-shaped lower support block 322 is provided with a lower guide groove 35, a pair of lower rollers 351 that slide left and right are engaged on the lower guide groove 35, a support 352 is fixed on the lower rollers 351, and a lower guide rod 353 is provided inside the lower guide groove 35.

[0038] As a protective mechanism for an electric hoist according to this utility model, preferably, a lower spring 354 is sleeved on the two lower guide rods 353 separated by the lower roller 351, and a left connecting rod 36 that is movably connected to the right connecting rod 34 is movably arranged between the support 352 and the upper roller 324.

[0039] The working principle of this utility model:

[0040] When the hook 4 rises to the top during lifting, it first comes into contact with the rubber limiting strip 33. At this time, it exerts an upward force on the rubber limiting strip 33 and pushes the rubber limiting strip 33 to move upward. At this time, the L-shaped lower support block 322 pushes the right connecting rod 34 and the left connecting rod 36 to change the angle. At this time, the left connecting rod 36 pushes the lower roller 351 to slide outward inside the lower guide groove 35, and is buffered by the lower spring 354. At the same time, the right connecting rod 34 and the left connecting rod 36 respectively push the upper right roller 325 and the upper left roller 324 to slide outward inside the upper guide groove 323, and are further buffered by the upper spring 327. This reduces the impact force caused by the top impact, reduces the damage to the electric hoist caused by the top impact, and increases the service life of the electric hoist.

[0041] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A protection mechanism for an electric hoist, comprising a hoist body (1), characterized in that: It also includes a load-bearing chain (2) set on the hoist body (1) and a protective component (3) set on the bottom of the outer shell of the hoist body (1), wherein the load-bearing chain (2) is provided with a hook (4). The protective component (3) includes an upper support plate (31) fixed to the bottom of the outer shell of the hoist body (1), and the upper support plate (31) is provided with a rubber limiting strip (33) through a buffer mechanism (32).

2. The electric hoist protection mechanism according to claim 1, characterized in that: The buffer mechanism (32) includes an upper support block (321) fixed to the bottom of the upper support plate (31) and an L-shaped lower support block (322) fixed to the top of the rubber limiting strip (33).

3. The electric hoist protection mechanism according to claim 2, characterized in that: The upper support block (321) is provided with an upper guide groove (323), and an upper left roller (324) and an upper right roller (325) are engaged on the upper guide groove (323). An upper guide rod (326) is provided through the upper guide groove (323).

4. The electric hoist protection mechanism according to claim 3, characterized in that: The upper left roller (324) and the upper right roller (325) are both adjusted on the upper guide rod (326), and the three sections of the upper guide rod (326) separated by the upper left roller (324) and the upper right roller (325) are all adjusted with upper springs (327).

5. The electric hoist protection mechanism according to claim 3, characterized in that: The upper guide groove (323) is matched with the upper left roller (324) and the upper right roller (325), and the upper left roller (324) and the upper right roller (325) slide in the left and right directions on the upper guide groove (323).

6. The electric hoist protection mechanism according to claim 2, characterized in that: A right connecting rod (34) is movably arranged between the top left end of the L-shaped lower support block (322) and the upper right roller (325).

7. The electric hoist protection mechanism according to claim 2, characterized in that: The L-shaped lower support block (322) has a lower guide groove (35) on its right end. A pair of lower rollers (351) that slide left and right are engaged on the lower guide groove (35). A support (352) is fixed on the lower rollers (351). A lower guide rod (353) is provided inside the lower guide groove (35).

8. The electric hoist protection mechanism according to claim 7, characterized in that: A lower spring (354) is sleeved on the two lower guide rods (353) separated by the lower roller (351), and a left connecting rod (36) that is movably connected to the right connecting rod (34) is movably arranged between the support (352) and the upper left roller (324).

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