CN211173308U - Anti-falling lifting device - Google Patents

Abstract

The anti-falling lifting device is characterized in that a frame part (1) of the lifting device is arranged along the vertical direction; the driving part (2) is arranged on the frame part (1); the transmission part (3) is connected with the driving part (2); the bearing part (4) is connected with one end of the transmission part (3); the weight of the counterweight part (5) is greater than that of the bearing part (4) and is connected with the other end of the transmission part (3); one end of the anti-falling part (6) is connected with the bearing part (4), the other end is connected with the counterweight part (5), and the anti-falling part (6) is not tensioned. The anti-falling lifting device is provided with the anti-falling part (6) which is not tensioned, so that the anti-falling part (6) does not work in normal operation, and the condition of abrasion does not exist. Moreover, because the weight of the counterweight part (5) is greater than that of the bearing part (4), even if the transmission part (3) breaks down, the counterweight part (5) can also pull the bearing part (4) upwards through the anti-falling part (6) to avoid falling.

Description

Anti-falling lifting device

Technical Field

The utility model relates to a stereo garage technical field especially relates to a lifting device that can prevent falling.

Background

The stereo garage is usually provided with a loading space along the up-down direction, and the loading space is driven by a lifting device so as to achieve the purpose of effectively utilizing the space. The lifting device is connected with the loading position through a chain transmission mechanism. The weight of the mechanical structure of the loading space and the weight of the vehicle are all borne by the chain of the chain transmission, which is prone to wear, especially when the design is not reasonable or the assembly accuracy is problematic, which is accelerated, and when the wear reaches a certain degree, the chain is prone to break.

In order to prevent the problem that the loading position falls to cause safety accidents due to chain breakage, the lifting device is usually connected with the loading position by two sets of chain transmission mechanisms, however, although the risk of chain breakage is reduced due to the increase of the chain transmission mechanisms, the chain can be broken because the abrasion of the chain exists all the time.

SUMMERY OF THE UTILITY MODEL

To the above technical problem, the utility model provides a can prevent elevating gear who falls.

The anti-falling lifting device comprises a frame part, wherein the frame part is arranged along the vertical direction; a driving part mounted on the frame part; a transmission portion coupled with the driving portion; the bearing part is connected with one end of the transmission part; the weight of the counterweight part is greater than that of the bearing part, and the counterweight part is connected with the other end of the transmission part; a fall arrest portion having one end coupled to the load bearing portion and the other end coupled to the counterweight portion, and being not tensioned.

Preferably, the anti-falling part comprises a pulley block and an elongated flexible connecting piece; the flexible connecting piece can slide in the pulley block, one end of the flexible connecting piece is connected with the bearing part, and the other end of the flexible connecting piece is connected with the counterweight part.

Further preferably, the pulley block comprises four first pulleys and two second pulleys, the four first pulleys are distributed above the bearing part in a rectangular shape, and the second pulleys are respectively arranged above the counterweight part; the flexible connecting pieces comprise four pieces, and the bearing part and the counterweight part are respectively coupled through the first pulley and the second pulley.

Still further preferably, the first pulley is provided with a first guide groove around the outer circumference thereof; the second pulley is provided with two second guide grooves surrounding the periphery of the second pulley, and the second guide grooves are distributed along the axial direction of the second pulley; the four flexible connecting pieces slide in the first guide grooves of the four first pulleys respectively and slide in the second guide grooves of the two second pulleys respectively.

Preferably, the falling prevention part further comprises a plurality of restricting members respectively disposed above the first and second guide grooves to restrict the flexible connecting member within the first and second guide grooves.

Further preferably, there is a gap between the restricting member and the outer peripheries of the first pulley and the second pulley, respectively, and a height of the gap is smaller than an outer diameter of the flexible connecting member.

Preferably, the flexible connector is a steel wire rope.

Preferably, the flexible connection is a lifting chain.

Preferably, the bearing part comprises four brackets which are arranged in a rectangular shape, and the four first pulleys are respectively arranged above the four brackets.

Further preferably, the rack part comprises four upright columns which are distributed in a rectangular shape, and the four upright columns are respectively provided with a first guide part; the bearing part further comprises four second guide parts, the second guide parts are respectively arranged on the four brackets, and the second guide parts slide on the first guide parts along the vertical direction.

The utility model discloses a can prevent elevating gear that falls owing to set up the portion of preventing falling that is not by the tensioning, consequently, elevating gear is when normal operating, and the portion of preventing falling is out of work, and is not stressed yet, consequently does not have the condition of wearing and tearing, can guarantee its intensity. In addition, the weight of the counterweight part is greater than that of the bearing part, so that even if the transmission part fails, the counterweight part can also pull the bearing part upwards through the falling prevention part to avoid falling.

Drawings

Fig. 1 is a front view of an embodiment of a fall arrest elevator assembly of the present invention;

FIG. 2 is a left side view of the fall arrest hoist assembly of FIG. 1;

fig. 3 is a perspective view of a fall-preventive lifting device (a column of a frame portion is omitted);

fig. 4 is a partially enlarged view of fig. 3A.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention can be implemented in many different ways, and is not limited to the embodiments described herein, but rather, these embodiments are provided to enable those skilled in the art to understand the disclosure more thoroughly.

Further, the description of illustrative embodiments in accordance with the principles of the invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In describing the disclosed embodiments of the present invention, reference to any direction or orientation is intended only for convenience of illustration and is not intended to limit the scope of the present invention in any way. Relative terms such as "front," "back," "upper," "lower," "rear," "outer," "inner," "middle," "inner," "outer," "lower," "upper," "horizontal," "vertical," "above," "below," "up," "down," "top" and "bottom") and derivatives thereof (e.g., "horizontally," "downwardly," "upwardly," etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless otherwise specifically stated. The invention should therefore not be limited to the exemplary embodiments which illustrate some possible non-limiting combinations of features which may be present alone or in other feature combinations; the scope of protection of the invention is defined by the appended claims.

As presently contemplated, this disclosure describes the best mode or mode of practice of the invention. The present invention is not intended to be construed as limited to the particular embodiments shown, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Like reference characters designate like or similar parts throughout the various views of the drawings.

Fig. 1 is a front view of an embodiment of a fall arrest lifter, and fig. 2 is a left side view of the fall arrest lifter. Referring to fig. 1 and 2, the fall-prevention lifting device comprises a frame portion 1, wherein the frame portion 1 is arranged along a vertical direction, specifically, the frame portion 1 may comprise four upright posts 11, the four upright posts 11 are distributed in a rectangular shape, and the bottoms of the four upright posts 11 are taken as fulcrums, and when the adjacent fulcrums are connected, the frame portion is rectangular when viewed from a top view (although the embodiment does not show a top view, the frame portion can be clearly seen by combining a front view and a left view). The upright columns 11 can be made of steel sectional materials, adjacent upright columns 11 can be connected through upright column cross beams 12, and can be locked by bolts or welded, so that the whole frame part 1 is stable.

Fig. 3 is a perspective view of a fall arrest elevating device (frame part omitted); fig. 4 is a partially enlarged view of fig. 3A. Referring to fig. 3 and 4, and with additional reference to fig. 1, the driving part 2 is mounted on the frame part 1, and the driving part 2 may be mounted anywhere on the frame, such as the bottom of the frame part 1 and the top of the frame part 1. Preferably on top of the frame part 1. The driving part 2 includes a reduction motor 21, a driving shaft 22, and a bearing seat 23, the reduction motor 21 may be a combination of a three-phase asynchronous motor and a reducer, the reduction motor 21 may be a commercially available reduction motor, such as a reduction motor manufactured by SEW-transmission equipment, ltd, the driving shaft 22 is supported by the bearing seat 23, the reduction motor 21 and the driving shaft 22 are coupled by a coupling part 24, and the coupling part 24 may be a well-known coupling mechanism such as a shaft coupling, a gear transmission mechanism, a chain transmission mechanism, or the like. From the viewpoint of space saving, the coupling portion 24 is preferably a coupling whose both ends are coupled to the output shaft of the reduction motor 21 and the drive shaft 22, respectively.

The driving part 2 is connected with a transmission part 3, and the transmission part 3 can be a chain transmission mechanism, a screw rod transmission mechanism or other transmission mechanisms capable of being driven linearly. Chain drives are preferred from the standpoint of cost savings and increased travel. In order to prevent the chain from breaking, which would cause the carrier 4 (described below) coupled to one end to fall, the transmission part 3 comprises at least two sets of chain drives 31, the two sets of chain drives 31 being located at the two ends of the drive shaft 22, respectively, and the reduction motor 21 being located in the middle of the drive shaft 22. The chain transmission mechanism 31 includes chain wheels 311 installed at both ends of the driving shaft 22, and chains 312 respectively engaged with the chain wheels 311, and the chains 312 are preferably lifting chains, and further preferably, plate-type chains, multi-plate pin shaft chains, or the like. The chain 312 is commercially available, such as can be produced by the Donghua chaine group. By providing at least two sets of chain drives 31, it can be ensured that in the event of a chain break in one of the sets of chain drives 31, at least one other set of chain drives 31 pulls on the carrier part 4, as a result of which the carrier part 4 can be prevented from falling.

As described above, the carrier 4 is coupled to one end of the chain 312 of the transmission part 3. The carrying part 4 is used for carrying the automobile and can move in the vertical direction. In order to reduce the weight of the carrier part 4 and to ensure the carrying capacity of the carrier part 4, the carrier part 4 comprises four brackets 41, the four brackets 41 being arranged in a rectangular shape. The four brackets 41 can be connected with each other through the bracket beam 43, and can be locked through bolts or fixed by welding to form a holding tool capable of holding the automobile, for example, the four brackets 41 can respectively hold four tires of the automobile, or any place on the automobile which can be supported, so as to drive the automobile in the vertical direction through the driving part 2. The four brackets 41 may support a support plate (not shown) for supporting the vehicle.

The lifting device can also guide the carrying part 4 in order to prevent the carrying part 4 from shaking when moving up and down. Specifically, the first guide portions 111 may be respectively provided on the four columns 11, and the second guide portions 42 may be respectively provided on the bearing portion 4, if the second guide portions 42 are respectively provided on the four brackets 41, the second guide portions 42 slide on the first guide portions 111 in the vertical direction when the driving portion 2 drives the bearing portion 4 to move in the vertical direction. The four columns 11 may be respectively formed with smooth guide surfaces as the first guide portions 111, and correspondingly, the second guide portions 42 may include guide wheels 421, and the guide wheels 421 may abut on the guide surfaces and slide thereon. It should be noted that although the guide wheel 421 is rolled on the guide surface when viewed from the guide wheel 421 and the guide surface, the sliding is considered to be relative to the fixed, that is, the first guide portion 111 and the second guide portion 42 are moved relative to each other. Further, a guide such as a guide rail may be attached to the column 11 as the first guide portion, and correspondingly, the second guide portion 42 may be designed to have a slider such as a dovetail slider, a linear slide slider, a dovetail slider, or the like according to the shape of the guide rail. Although from a driving point of view, the vertical movement of the drive carriage 4 can be achieved by increasing the output of the drive 2. However, in the present embodiment, in order to reduce the output of the driving part 2 and to make the driving of the lifting device smoother while preventing the carrier part 4 from falling, the lifting device of the present embodiment further includes the weight part 5, and the weight part 5 is coupled with the other end of the chain 312 of the transmission part 3. The driving part 2 is located in the middle of the chain 312 of the transmission part 3, so that when the driving part 2 is driven, the bearing part 4 can be lifted, if the bearing part 4 is lifted, the weight part 5 is lifted, and if the bearing part 4 is lifted, the weight part 5 is lifted. The counterweight 5 may be a counterweight as is commonly used in lifting devices, hoisting devices, elevators.

In the present embodiment, the weight of the weight portion 5 is greater than the weight of the load bearing portion 4, and here, the weight of the load bearing portion 4 includes the weight of the structure of the load bearing portion 4 itself, and the weight of the load bearing portion 4 after loading. Because, in practice, the drive unit 2 is usually driven only after the carriage unit 4 is loaded. By setting the weight of the weight portion 5 to be larger than the weight of the bearing portion 4, when the chain 312 of the transmission portion 3 breaks in the stationary state, the fall prevention portions 6, described below, which respectively couple the bearing portion 4 and the weight portion 5, on the side of the chain 312 of the transmission portion 3 are straightened by the bearing portion 4 and the weight portion 5, and since the weight of the weight portion 5 is larger than the weight of the bearing portion 4, the bearing portion 4 can be prevented from falling. If the chain 312 is broken in the moving state, the carrier 4 can be normally operated for a short time by the driving of the driving part 2 under the traction of the chain 312 of the remaining transmission part 3.

As described above, the lifting device further includes the fall preventing portion 6, one end of the fall preventing portion 6 is coupled with the bearing portion 4, the other end is coupled with the weight portion 5, and the fall preventing portion 6 is not tensioned. Here, "not tensioned" means that, in a state where the transmission part 3 is normally operated, the bearing part 4 and the weight part 5 do not exert a pulling force on each other, that is, although the fall protection part 6 is respectively coupled with the bearing part 4 and the weight part 5, the fall protection part is in a state where it is not straightened, which is advantageous in that, when the lifting device is normally operated, the fall protection part 6 is in a standby state, the driving part 2 is driven back and forth, the fall protection part 6 is not affected, and excessive friction or abrasion is not generated, so that when the fall protection part 6 needs to be operated, the working performance thereof cannot be failed due to loss in the previous operation.

The fall-preventing portion 6 will be described in detail below.

The anti-falling part 6 comprises a pulley block 61 and an elongated flexible connecting piece 62, the flexible connecting piece 62 can slide in the pulley block 61, one end of the flexible connecting piece 62 is connected with the bearing part 4, and the other end of the flexible connecting piece 62 is connected with the counterweight part 5. Flexibility is a state in relation to rigidity in which the connecting element deforms after being subjected to a force, and does not return to its original shape by itself after the force is lost. The long strip includes a string, a chain, a belt, and the like. The elongated flexible connecting member 62 of the fall arrest part 6 may be selected from a steel wire rope for lifting, a plate chain for a hoist chain, a multi-plate pin chain, and the like.

In the present embodiment, the pulley block 61 includes four first pulleys 611 and two second pulleys 612, the four first pulleys 611 are distributed in a rectangular shape above the bearing part 4, specifically, the four first pulleys 611 are respectively disposed above the four brackets 41, and the two second pulleys 612 are respectively disposed above the weight part 5, for assisting in changing the angle of extension of the flexible connecting member 62. The flexible connecting members 62 include four, which couple the load bearing part 4 and the weight part 5 via the first pulley 611 and the second pulley 612, respectively. Here, the flexible connecting member 62 that links the load-bearing part 4 and the weight part 5 is in an untensioned state, and therefore, it is not subjected to a large tensile force, or wear, or the like, when sliding on the pulley. It should be noted that the reason why the flexible link 62 can be unstrained is that the load bearing part 4 and the weight part 5 are pulled by the chain 312 of the transmission part 3 with respect to each other, and therefore, the weight force of the load bearing part 4 and the weight part 5 does not directly act on the flexible link 62, and as long as the length of the flexible link 62 is set to be slightly longer than the path connecting the load bearing part 4 and the weight part 5 via the first pulley 611 and the second pulley 612, it can be achieved that the flexible link 62 is not strained in the normal state.

Since the flexible connecting member 62 is not tensioned, in order to prevent it from being separated from the first and second pulleys 611 and 612, the first pulley 611 is provided with a first guide groove 611a around the outer circumference thereof, and the first guide groove 611a may be a V-shaped groove. The second pulley 612 is provided with two second guide grooves 612a surrounding the outer periphery thereof, the second guide grooves 612a can also be V-shaped grooves, and the second guide grooves 612a are distributed along the axial direction of the second pulley 612; the four flexible connecting members 62 slide in the first guide grooves 611a of the four first pulleys 611, respectively, and slide in the second guide grooves 612a of the two second pulleys 612, respectively. Thus, the flexible link 62 coupling the bearing part 4 and the weight part 5, respectively, can be guided by the first and second guide grooves 611a and 612a, preventing the flexible link 62 from being disengaged from the pulley when the bearing part 4 moves up and down.

Although four flexible connecting members 62, four first pulleys 611, and two second pulleys 612 have been described here, this is merely a preferable embodiment, and the number of flexible connecting members 62, the number of pulleys 611 and 612, and the number and shape of the first guide grooves 611a on the pulleys may be changed according to the actual situation, such as the weight of the load receiving unit 4.

Further, the fall arrest part 6 further comprises a plurality of restricting members 63, and the restricting members 63 are disposed above the first and second guide grooves 611a and 612a to restrict the flexible connecting member 62 within the first and second guide grooves 611a and 612 a. By designing the restricting member 63 above the first guide groove 611a and the second guide groove 612a, the flexible link 62 can be further prevented from deviating from the first guide groove 611a or the second guide groove 612 a. In order to prevent the first pulley 611 or the second pulley 612 from colliding with the limiting member 63 when rolling, a gap exists between the limiting member 63 and the outer periphery of the pulley, namely, a gap exists between the limiting member 63 and the outer periphery of the first pulley 611, a gap also exists between the limiting member 63 and the outer periphery of the second pulley 612, and the height of the gap is smaller than the outer diameter of the flexible connecting member 62, so that the limiting member 63 can limit the flexible connecting member 62 and cannot collide with the pulley. The stopper 63 may be formed by bending a sheet metal, for example, and attached to the attachment seat 613 of the pulleys 611 and 612, without limitation to the attachment position and attachment method, as long as the flexible link 62 can be restricted in the first guide groove 611a and the second guide groove 612 a.

The operation of the fall preventing portion 6 will be described below.

When one of the sets of chains 312 of the transmission part 3 breaks, the bearing part 4 on that side is slightly inclined downward by gravity, and the inclination is not so much due to the guidance of the first guide part 111 and the second guide part 42. At this time, the flexible connector 62 of the fall arrest part 6 pulls the load bearing part 4 inclined downward, thereby ensuring that the load bearing part 4 can still operate normally after the chain 312 is broken.

Although the probability of breakage of the plurality of sets of chains 312 of the transmission section 3 is very small, even if this occurs, the carrier section 4 can be pulled by the fall-preventing portions 6, thereby ensuring that the carrier section 4 does not fall down after all the chains 312 are broken.

The various features described in the foregoing detailed description may be combined in any manner and, for the sake of unnecessary repetition, the invention is not limited in its scope to the particular combinations illustrated.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the scope of the present invention should be construed as being included in the technical solutions of the present invention.

Claims (10)

1. The lifting device capable of preventing falling is characterized by comprising

A frame part disposed in a vertical direction;

a driving part mounted on the frame part;

a transmission portion coupled with the driving portion;

the bearing part is connected with one end of the transmission part;

the weight of the counterweight part is greater than that of the bearing part, and the counterweight part is connected with the other end of the transmission part;

a fall arrest portion having one end coupled to the load bearing portion and the other end coupled to the counterweight portion, and being not tensioned.

2. The fall arrest able lifting device according to claim 1, wherein the fall arrest portion comprises a pulley block and an elongate flexible connection;

the flexible connecting piece can slide in the pulley block, one end of the flexible connecting piece is connected with the bearing part, and the other end of the flexible connecting piece is connected with the counterweight part.

3. The fall arrest device according to claim 2, wherein the set of pulleys comprises four first pulleys distributed rectangularly over the load bearing part and two second pulleys arranged respectively over the counterweight part;

the flexible connecting pieces comprise four pieces, and the bearing part and the counterweight part are respectively coupled through the first pulley and the second pulley.

4. A fall arrest device as claimed in claim 3, characterised in that the first pulley is provided with a first guide groove around its periphery;

the second pulley is provided with two second guide grooves surrounding the periphery of the second pulley, and the second guide grooves are distributed along the axial direction of the second pulley;

the four flexible connecting pieces slide in the first guide grooves of the four first pulleys respectively and slide in the second guide grooves of the two second pulleys respectively.

5. The fall arrest device as claimed in claim 4, wherein the fall arrest portion further comprises a plurality of restraining members disposed above the first and second guide slots respectively to restrain the flexible linkage within the first and second guide slots.

6. The fall arrest able lifting device according to claim 5, wherein there is a gap between the restraint and the outer periphery of the first and second pulleys, respectively, and wherein the gap has a height less than the outer diameter of the flexible linkage.

7. A fall arrest lifting device according to any one of claims 2 to 6, characterised in that the flexible connection is a steel cable.

8. A fall arrest lifting device according to any one of claims 2 to 6, characterised in that the flexible connection is a lifting chain.

9. A fall arrest lifting device according to claim 3, characterised in that the carrier comprises four brackets, four of which are arranged in a rectangular array, four of the first pulleys being located above each of the four brackets.

10. The fall arrest device according to claim 9, wherein the frame portion comprises four rectangular columns, each of the four columns having a first guide portion;

the bearing part further comprises four second guide parts, the second guide parts are respectively arranged on the four brackets, and the second guide parts slide on the first guide parts along the vertical direction.

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