CN212024703U - Anti-falling device - Google Patents

Abstract

The utility model discloses a falling-proof device, which comprises two ejection friction mechanisms symmetrically arranged at two sides of a lifting track, wherein the ejection friction mechanisms comprise a bracket, a movable block, an elastic element and a trigger executing mechanism, the bracket is fixedly arranged on a lifting platform, and the bracket is provided with an inclined chute; the movable block is arranged on the bracket in a sliding manner, the movable block can slide along the sliding groove, one side surface of the movable block can be abutted against one side surface of the lifting track, and a baffle is arranged on the movable block; one end of the elastic element is fixedly connected with the movable block, and the other end of the elastic element is in sliding butt joint with the bracket; the trigger execution mechanism is fixedly arranged on the lifting platform and is in sliding butt joint with the baffle, and the trigger execution mechanism can block and separate from the baffle. The anti-falling device moves along with the lifting platform, the impact on the equipment in the anti-falling process can not change along with the change of the height of the lifting platform, the impact is greatly reduced, strong vibration can not be caused, and the equipment is protected as far as possible.

Description

Anti-falling device

Technical Field

The utility model belongs to the jacking equipment field, concretely relates to anti-falling device.

Background

In the process of carrying panel, often need transport panel between the platform of different elevations, then the elevating platform has obtained extensive application in actual production, the elevating platform is at the in-process that goes up to descend, speed generally should not be too fast, speed too fast can cause great impact and make equipment damaged to equipment, or its wearing and tearing reduce its life with higher speed, and its lift drive of lift in-process probably became invalid and makes the elevating platform fall and damage equipment, if adopt wire rope to hang and draw the elevating platform, still prevent that wire rope from making the elevating platform fall through going into the fatigue fracture that became invalid, so all must set up anti-falling device on the elevating platform.

At present, most of anti-falling devices of elevators lifted by steel wire ropes directly block an elevator platform for a blocking structure, and the blocking structure cannot move along with the elevator platform, so that the blocking structure is arranged at the bottom of the elevator, and when the elevator platform falls from a higher position, the impact on equipment is huge, strong vibration is caused, and the equipment is very easy to damage.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art not enough, the utility model aims at providing a falling prevention device to solve present falling prevention device most of and directly block the elevating platform for blocking the structure, block the structure and can not be along with the elevating platform motion, it is huge to the impact of equipment when the elevating platform falls from higher position, arouse strong vibrations, very easily damage the scheduling problem of equipment.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a falling protection device installs on the elevating platform, falling protection device includes two and pops out friction mechanism, two pop out friction mechanism symmetry and locate the orbital both sides of going up and down, pop out friction mechanism and include:

the bracket is fixedly arranged on the lifting platform and is provided with an inclined sliding chute;

the movable block is slidably arranged on the bracket and can slide along the sliding groove, when the movable block slides along the sliding groove to be close to the lifting track, one side face of the movable block can be abutted against one side face of the lifting track, and a baffle is arranged on the movable block;

one end of the elastic element is fixedly connected with the movable block, the other end of the elastic element is in sliding butt joint with the bracket, and the elastic element drives the movable block to move along the sliding groove so as to be close to the lifting track; and

the trigger executing mechanism is fixedly arranged on the lifting platform and is in sliding butt joint with the baffle, the trigger executing mechanism can block the baffle, the elastic element keeps a compressed state so as to block the movable block from approaching the lifting track, the trigger executing mechanism can be separated from the baffle in a sliding mode, and the elastic element extends from the compressed state.

When the lifting platform descends too fast or a steel wire rope breaks and freely falls, the triggering execution mechanisms on two sides of the lifting track are separated from the baffle plate at the same time, the elastic element extends to drive the movable block to slide along the sliding groove, the movable block is close to the lifting track, the movable blocks on two sides of the lifting track are respectively abutted against the side faces of two sides of the lifting track and generate friction force, so that the lifting platform stops descending movement, the anti-falling device moves along with the lifting platform, impact on equipment in the anti-falling process cannot change along with the change of the position, compared with the anti-falling device with the blocking structure arranged at the bottom of the lifting machine and cannot move along with the lifting platform, the impact when the lifting platform descends is greatly reduced, strong vibration cannot be caused, and the equipment is protected as far as possible.

Furthermore, the side that the movable block can butt with the lift track is equipped with the friction disc. The friction disc passes through the screw to be connected with the movable block, and the friction disc adopts the softer material than the lift track to at the more wearing and tearing friction disc of frictional in-process, thereby protection lift track, consequently the friction disc wearing and tearing are fast, set up bolted connection and easily change.

Further, trigger actuating mechanism includes dog, lead screw, slide and driving piece, a surface energy of dog with the baffle butt, the dog thread bush is located on the lead screw, the lead screw with the support rotates to be connected, the slide follow the length direction of lead screw extend and with support fixed connection, the dog with slide sliding connection, the driving piece with the one end of lead screw is connected, in order to drive the lead screw rotates. The driving piece drives the screw rod to rotate, and the screw rod drives the stop block to slide along the sliding seat, so that the stop block can block the baffle and can also slide to separate from the baffle.

Furthermore, the anti-falling device also comprises an elastic element compression mechanism, wherein the elastic element compression mechanism is connected with the bracket and the movable block and can push the movable block to compress the elastic element. The elastic element compression mechanism is used for driving the movable block to slide, so that the elastic element is compressed.

Furthermore, the elastic element compression mechanism comprises a first lug, a second lug, a screw rod and a nut, the first lug is fixedly connected with the support, the second lug is fixedly connected with the movable block, the screw rod is in threaded connection with the first lug, one end face of the screw rod can be abutted against the second lug, and the nut is sleeved on the screw rod in a threaded manner. The movable block can be driven to slide by driving the screw rod, and the nut is used for locking the screw rod. The drive screw rod is only abutted against the second lug when the drive movable block slides, and normally, a distance far enough to prevent the influence on the sliding of the movable block is kept between the drive screw rod and the second lug.

Furthermore, the anti-falling device further comprises a rolling mechanism, wherein the rolling mechanism comprises a roller and a roller, the roller is rotatably connected with the support, the roller is rotatably sleeved on the roller, and the circumferential surface of the roller is in rolling connection with one side surface of the movable block. The rollers are arranged to strengthen the structural strength of the movable block when the movable block is extruded by the lifting platform, and the stress condition of the movable block is improved.

Furthermore, the rolling mechanism also comprises a shaft sleeve, and the roller is rotationally connected with the roller through the shaft sleeve. The sleeve is arranged to reduce friction between the roller and the roller.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the anti-falling device moves along with the lifting platform, the lifting platform is prevented from falling by friction force generated by friction between the movable blocks on the two sides of the lifting track and the two side faces of the lifting track, impact on equipment in the anti-falling process cannot change along with the change of the position, and compared with the anti-falling device with a blocking structure arranged at the bottom of the lifting machine and incapable of moving along with the lifting platform, the anti-falling device greatly reduces impact when the lifting platform descends, cannot cause strong vibration, and therefore the equipment is protected as far as possible.

2. The trigger executing mechanism adopts a screw nut structure, and is stable and reliable.

3. The side of the movable block is provided with a rolling mechanism, so that the structural strength of the movable block when the movable block is extruded by the lifting platform is enhanced, and the stress condition of the movable block is improved.

4. The device is stable and reliable, and the suitability is strong.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a view A-A of FIG. 1;

FIG. 3 is a view B-B of FIG. 2;

FIG. 4 is a view C-C of FIG. 2;

FIG. 5 is a view D-D of FIG. 1;

fig. 6 is a front view of the friction plate on the movable block of the present invention abutting against the two side surfaces of the lifting rail.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or structures must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.

Referring to fig. 1 to 3, the anti-falling device provided in this embodiment is installed on a lifting platform, and the anti-falling device includes two ejecting friction mechanisms 1, the two ejecting friction mechanisms 1 are symmetrically disposed on two sides of a lifting rail 100, specifically, the two ejecting friction mechanisms 1 disposed on two sides of the lifting rail 100 simultaneously operate to clamp the lifting rail 100, so as to prevent the lifting platform from directly falling, and avoid various dangers such as damage to equipment due to free falling of the lifting platform.

The ejection friction mechanism 1 includes: the device comprises a bracket 11, a movable block 12, an elastic element 13 and a trigger actuator 14.

The bracket 11 is fixedly arranged on the lifting platform, and the bracket 11 is provided with an inclined chute 11 a. Specifically, the two ends of the bracket 11 are vertically connected to the lifting platform through bolts, and a certain distance is formed between the bottom surface of the bracket 11 and the surface of the lifting platform. The support 11 moves up and down along with the lifting platform, and the support 11 is of a hollow structure and the side facing the lifting track 100 is not closed. In this embodiment, the sliding slot 11a is a long strip hole and penetrates through the surface and the bottom of the hollow structure, and the upper end of the sliding slot 11a is inclined toward the lifting rail 100.

The movable block 12 is slidably disposed on the bracket 11, the movable block 12 can slide along the sliding groove 11a, when the movable block 12 slides along the sliding groove 11a and is close to the lifting rail 100, one side of the movable block 12 can abut against one side of the lifting rail 100, and the movable block 12 is provided with a baffle 121. The movable block 12 is arranged in the hollow structure of the bracket 11. Specifically, a friction plate 122 is provided on a side surface of the movable block 12 that can abut against the lifting rail 100. The friction plate 122 is connected with the movable block 12 through screws, and the friction plate 122 is made of a material softer than that of the lifting rail 100, so that the friction plate 122 is abraded more in the friction process, the lifting rail 100 is protected, the friction plate 122 is abraded quickly, and the arrangement of the screw connection is easy to replace. In this embodiment, the movable block 12 is provided with an inclined elongated slot 12a identical to that of the bracket 11, the elongated slot 12a is aligned with the sliding slot 11a, the baffle 121 is provided with a hole having a width equivalent to that of the sliding slot 11a, the baffle 121 is connected with the movable block 12 by inserting two pins 123 into the holes and penetrating through the sliding slot 11a, and the pins 123 at the lower part are abutted against the elongated slot 12a on the movable block 12 and the inner walls of the lower ends of the sliding slots 11a and the lower ends of the bracket 11.

One end of the elastic element 13 is fixedly connected with the movable block 12, and the other end is in sliding contact with the bracket 11, and the elastic element 13 drives the movable block 12 to move along the sliding groove 11a so as to be close to the lifting track 100. Specifically, the movable block 12 is provided with a blind hole for vertically placing the elastic element 13, one end of the elastic element 13 is fixedly connected with the end wall of the blind hole, the other end of the elastic element 13 is abutted against the inner side wall of the hollow structure of the bracket 11, and the abutted position moves along with the sliding of the movable block 12. The elastic element 13 may be a spring, an elastic pad, or the like, as long as the movable block 12 can be sprung open, and a spring is used in this embodiment, and each movable block 12 is provided with two springs.

Referring to fig. 4, the trigger actuator 14 is fixed on the lifting platform, the trigger actuator 14 is in sliding contact with the baffle 121, the trigger actuator 14 can block the baffle 121, so that the elastic element 13 keeps a compressed state to block the movable block 12 from approaching the lifting rail 100, the trigger actuator 14 can slide away from the baffle 121, and the elastic element 13 extends from the compressed state. Specifically, the trigger actuator 14 includes a stop 141, a screw 142, a sliding seat 143, and a driving element 144, wherein a surface of the stop 141 can abut against the baffle 121, the stop 141 is threadedly disposed on the screw 142, the screw 142 is rotatably connected to the bracket 11, the sliding seat 143 extends along a length direction of the screw 142 and is fixedly connected to the bracket 11, the stop 141 is slidably connected to the sliding seat 143, and the driving element 144 is connected to one end of the screw 142 to drive the screw 142 to rotate. The driving member 144 drives the screw rod 142 to rotate, and the screw rod 142 drives the stopper 141 to slide along the sliding base 143, so that the stopper 141 can block the baffle 121 and can also slide away from the baffle 121. In the embodiment, the screw 142 is rotatably connected to a bearing seat 145 fixed on the bracket 11 through a bearing, and sliding seats 143 are provided on both upper and lower sides of the stopper 141 to enhance the stress of the overall structure. The driving member 144 can be an electric motor or a hydraulic motor, etc., as long as it can drive the screw rod 142 to rotate, and an electric motor is used in this embodiment. The motor is connected to one end of the lead screw 142 via a coupling 146.

Of course, the anti-falling device provided in this embodiment may further include an elastic element compressing mechanism 15, where the elastic element compressing mechanism 15 is connected to the bracket 11 and the movable block 12, and can push the movable block 12 to compress the elastic element 13. The elastic element compression mechanism 15 is used for driving the movable block 12 to slide, thereby compressing the elastic element 13. Specifically, the elastic element compressing mechanism 15 includes a first protrusion 151, a second protrusion 152, a screw 153 and a nut 154, the first protrusion 151 is fixedly connected to the bracket 11, the second protrusion 152 is fixedly connected to the movable block 12, the screw 153 is in threaded connection with the first protrusion 151, and an end surface of the screw 153 can abut against the second protrusion 152, and the nut 154 is threadedly sleeved on the screw 153. The movable block 12 can be driven to slide by driving the screw 153, and the nut 154 is used for locking the screw 153. The driving screw 153 abuts against the second projection 152 only when the movable block 12 is driven to slide, and normally keeps a distance from the second projection 152 enough to prevent the sliding of the movable block 12 from being affected.

Referring to fig. 5, as a further optimization, the anti-falling device may further include a rolling mechanism 16, the rolling mechanism 16 includes a roller 161 and a roller 162, the roller 162 is rotatably connected to the bracket 11, the roller 161 is rotatably sleeved on the roller 162, and a circumferential surface of the roller 161 is rotatably connected to a side surface of the movable block 12. The rollers 161 are provided to enhance the structural strength of the movable block 12 when being pressed by the lifting platform, and to improve the stress condition thereof. Specifically, the rolling mechanism 16 further includes a bushing 163, and the roller 161 is rotatably connected to the roller 162 through the bushing 163. The bushing 163 is provided to reduce friction between the roller 162 and the roller 161. In the embodiment, two rollers 161 are disposed and placed in the hollow structure of the bracket 11, and the circumferential surface of the roller 161 contacts with one side surface of the movable block 12, so that the roller 161 can roll along with the movable block 12 sliding along the sliding groove 11 a.

Referring to fig. 1 to 6, the working principle of the anti-falling device is as follows:

when the descending speed of the lifting platform is too high or the steel wire rope is broken and freely falls down, the control system of the lifting platform detects that the descending speed of the lifting platform reaches a certain set value, the control system of the lifting platform sends an instruction to the trigger execution mechanism 14, the driving part 144 is started, the screw rod 142 is driven to rotate, the stop block 141 moves along the sliding seat 143 towards the direction far away from the lifting track 100, the stop block 141 is enabled to be separated from the baffle plate 121 on the movable block 12, the elastic element 13 extends to push the movable block 12 to move along the inclined sliding groove 11a, the movable block 12 moves upwards and simultaneously approaches the lifting track 100, the friction plate 122 on the movable block 12 is abutted against two side faces of the lifting track 100 to generate friction force, and.

When the falling accident of the lifting platform is finished, the screw 153 of the elastic element compression mechanism 15 is manually driven to rotate at the moment, so that the movable block 12 moves downwards along the inclined chute 11a, when the movable block moves to the lower end of the chute 11a, the driving piece 144 starts the driving screw 142 to rotate reversely, the stop block 141 moves towards the direction close to the lifting track 100 along the sliding seat 143, the stop block 141 stops the baffle plate 121 on the movable block 12, and then the screw 153 of the elastic element compression mechanism 15 is manually rotated to the high position, so that a space for the movable plate to move is reserved.

The anti-falling device moves along with the lifting platform, the lifting platform is prevented from falling by virtue of friction force generated by friction between the movable blocks 12 on the two sides of the lifting track 100 and the two side surfaces of the lifting track 100, the impact on equipment in the anti-falling process cannot change along with the change of the height of the position, and compared with the anti-falling device of which the blocking structure is arranged at the bottom of the lifter and cannot move along with the lifting platform, the impact when the lifting platform descends is greatly reduced, strong vibration cannot be caused, and the equipment is protected as far as possible; the trigger executing mechanism 14 adopts a screw nut structure, and is stable and reliable; the rolling mechanism 16 is arranged on the side face of the movable block 12, so that the structural strength of the movable block 12 when being extruded by the lifting platform is enhanced, the stress condition of the movable block is improved, and the device is stable and reliable and has strong applicability.

It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (7)

1. The utility model provides a falling protection device installs on the elevating platform, its characterized in that, falling protection device includes two and pops out friction mechanism, two pop out friction mechanism symmetry and locate the orbital both sides of lift, pop out friction mechanism and include:

the bracket is fixedly arranged on the lifting platform and is provided with an inclined sliding chute;

the movable block is slidably arranged on the bracket and can slide along the sliding groove, when the movable block slides along the sliding groove to be close to the lifting track, one side face of the movable block can be abutted against one side face of the lifting track, and a baffle is arranged on the movable block;

one end of the elastic element is fixedly connected with the movable block, the other end of the elastic element is in sliding butt joint with the bracket, and the elastic element drives the movable block to move along the sliding groove so as to be close to the lifting track; and

the trigger executing mechanism is fixedly arranged on the lifting platform and is in sliding butt joint with the baffle, the trigger executing mechanism can block the baffle, the elastic element keeps a compressed state so as to block the movable block from approaching the lifting track, the trigger executing mechanism can be separated from the baffle in a sliding mode, and the elastic element freely extends from the compressed state.

2. The device of claim 1 wherein the movable block is provided with a friction pad on the side that can abut the lifting track.

3. The device of claim 1 wherein the actuating mechanism comprises a stop, a screw, a slide and a driving member, wherein a surface of the stop is capable of abutting against the stop, the stop is threadedly engaged with the screw, the screw is rotatably connected to the bracket, the slide extends along the length of the screw and is fixedly connected to the bracket, the stop is slidably connected to the slide, and the driving member is connected to one end of the screw to drive the screw to rotate.

4. The device of claim 1 further comprising a spring element compression mechanism coupled to the frame and the movable block and adapted to urge the movable block such that the spring element is compressed.

5. The device of claim 4 wherein the resilient element compression mechanism comprises a first projection fixedly connected to the bracket, a second projection fixedly connected to the movable block, a threaded rod threadably connected to the first projection and having an end surface engageable with the second projection, and a nut threadably received on the threaded rod.

6. The device of claim 1 further comprising a rolling mechanism, wherein the rolling mechanism comprises a roller and a roller, the roller is rotatably connected to the bracket, the roller is rotatably sleeved on the roller, and the circumferential surface of the roller is rotatably connected to one side of the movable block.

7. The device of claim 6 wherein the roller mechanism further comprises a bushing through which the roller is rotatably coupled to the roller.

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