CN215208341U

CN215208341U - Anti-falling safety mechanism of lift truck

Info

Publication number: CN215208341U
Application number: CN202120699374.2U
Authority: CN
Inventors: 谢财荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-12-17
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a fall-preventing safety mechanism of lift, set up fixed longitudinal brake strip from top to bottom between the upper and lower side of safe lift, and the lift seat combines a brake device in order to move along with this lift seat from top to bottom, this brake device includes the brake group, this brake group contains a brake wheel and a brake piece, when the transmission hoist cable breaks down or other factors cause the lift seat (the bearing object has hundreds of kilograms to several tons of weight loads) together with this brake group free fall rapid drop, make this brake wheel rotate clockwise rapidly and produce great centrifugal force and strike this brake piece and swing and deflect toward the brake strip, force to produce urgent brake effect and perfect brake function to the brake strip, reach the safety effect of preventing weighing down; the anti-falling mechanism is simple in structure and low in overall cost, can be widely used for improving the safety of operation, can be used for manufacturing and producing a safety lifting vehicle with the anti-falling mechanism, and can be additionally provided with the anti-falling mechanism on the existing lifting vehicle to ensure the safety of use.

Description

Anti-falling safety mechanism of lift truck

[ technical field ] A method for producing a semiconductor device

The utility model relates to a fall-preventing safety mechanism of a lift truck, which relates to the relevant technical field of a safety fall-preventing mechanism for preventing a lifting seat from falling down in the moment when a transmission sling of the lift truck breaks down.

[ background of the invention ]

The lift truck used in the prior art is provided with a pulley block to drive a lifting seat to ascend or descend, the pulley block comprises a winch, an upper transmission pulley, a lower transmission pulley and a transmission sling, one end of the transmission sling is fixed at a preset position above the lift truck, the other end of the transmission sling is wound on the winch, and the transmission sling can be matched with the upper transmission pulley arranged above the lift truck and the lower transmission pulley arranged below the lifting seat to drive the lifting seat to ascend or descend through the forward (upper) and reverse (lower) directions of the winch; however, the inspected lifting seat and the object carried by the lifting seat may have a weight load of hundreds of kilograms to tons, so that the driving sling may be aged and overloaded, and the lifting seat may drop rapidly, thereby causing damage to products and workers.

[ Utility model ] content

A primary object of the present invention is to provide a fall-preventing safety mechanism for a lift car, which can break or cause other factors to cause the lift seat to fall down together with the free falling body of the brake assembly, so that the brake wheel rotates clockwise rapidly and generates a large centrifugal force to impact the brake block and deflect toward the swing of the brake bar, thereby forcing the brake bar to generate a brake function and a perfect brake function, and achieving a fall-preventing safety effect.

The utility model discloses a next aim at provides a lift truck prevents weighing down safety mechanism, and it prevents weighing down mechanism simple structure and overall cost are low, but extensive use and the security that promotes mill's lift truck operation.

Another object of the present invention is to provide a fall-preventing safety mechanism for a lift truck, which can be used for preventing a fall from occurring in a factory, and can be used for preventing a fall from occurring in the factory.

The utility model adopts the following technical scheme:

an anti-falling safety mechanism of a lift truck is provided with a pulley block to drive a lifting seat of the lift truck to ascend or descend, wherein the pulley block comprises a winch, an upper transmission pulley, a lower transmission pulley and a transmission sling, one end of the transmission sling is fixed at a preset position above the safety lift truck, the other end of the transmission sling is wound on the winch, and the transmission sling is matched with the upper transmission pulley arranged above the safety lift truck and the lower transmission pulley arranged above the lifting seat to drive the lifting seat to ascend or descend through forward and backward rotation of the winch;

wherein:

the upper part and the lower part of the safe lifting vehicle are provided with a fixed longitudinal brake strip, the lifting seat is combined with a brake device to move up and down along with the lifting seat, the brake device comprises a brake set, the brake set comprises a brake wheel and a brake block, the lifting seat together with the free falling body of the brake set drops rapidly when a transmission sling breaks off, the brake wheel rotates clockwise rapidly and generates larger centrifugal force to impact the brake block to swing and deflect towards the brake strip, the brake strip is forced to generate instant and tight brake action, wherein the brake block is movably connected with the brake seat through a first pivoting piece, the brake wheel is movably connected with the other side of the brake seat through a second pivoting piece, and the brake wheel comprises a friction cam part and a friction wheel part, the friction part is used for impacting an axle bearing which is matched with the brake block to establish a pivot, the friction wheel part is used for making frictional contact with the brake strip, a brake seat of the brake device is combined and fixed with a brake chassis, the brake chassis is combined and fixed with a back plate, the back plate is combined and fixed with the lifting seat, a plurality of protruding ratchet block-shaped parts are arranged at intervals in the circumferential direction of a friction cam part of the brake wheel, the brake block comprises a brake part which is a sharp tooth-shaped surface or a sharp embossing surface, the sharp brake chassis is provided with a slotted hole and a plurality of guide wheels, so that the brake chassis smoothly goes up and down along with the lifting seat, the upper end of the brake strip can be fixedly connected with the upper side of the safety brake through an upper connecting piece, the lower end of the brake strip can be fixedly connected with the lower side of the safety lift through a lower connecting piece, the lower connecting piece comprises a first fixing part and a second fixing part connected above the first fixing part, the first fixing part is combined and fixed with one side of a base of the safety lifting vehicle through a plurality of first locking components, the second fixing part is separated from the upper end face of the base by a certain distance, the second fixing part is connected with the lower end of the brake strip through an adjusting screw and at least one nut in a rotary locking mode, and the lower end of the second fixing part can be finely adjusted through the up-and-down rotary adjustment of the adjusting screw.

The technical effects of the utility model are that:

1. when the transmission sling breaks or other factors cause the lifting seat and the brake group to drop rapidly by free falling, the brake wheel rotates clockwise rapidly and generates larger centrifugal force to impact the brake block to swing and deflect towards the brake bar, so that a tight braking effect and a perfect braking function are generated on the brake bar, and the anti-falling safety effect is achieved.

2. The anti-falling mechanism is simple in structure and low in overall cost, and can be widely used for improving the safety of the operation of the factory lift truck.

3. Besides manufacturing and producing the safety lift truck with the anti-falling mechanism, the anti-falling mechanism can be additionally arranged on the existing lift truck in a factory to ensure the use safety of the lift truck.

The details will be described later with reference to the drawings.

[ description of the drawings ]

Fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is another perspective view of an embodiment of the present invention;

fig. 3 is an enlarged schematic view of a brake bar and a brake device according to an embodiment of the present invention;

fig. 4 is a schematic plane combination and enlargement of a brake bar and a brake device according to an embodiment of the present invention;

fig. 5 is a schematic plan combination enlarged view of a brake state according to an embodiment of the present invention;

figure 6 is a three-dimensional exploded and enlarged schematic view of a brake seat with a seat cover according to an embodiment of the present invention;

FIG. 7 is a partial enlarged perspective view of an embodiment of the present invention;

fig. 8 is an exploded and enlarged schematic view of a brake chassis with an outer cover according to an embodiment of the present invention.

In the figure, 1. A back plate; a base; an upper end face; a pulley block; a hoist; uploading a transmission pulley; a lower drive pulley; a drive hoist cable; 3.. a lifting seat; a brake bar; a first locking assembly; an upper connector; a lower connector; a first fixed portion; a second fixed portion; adjusting screws; a nut; a brake device; a brake seat; a seat cover; a brake group; a brake wheel; a ratchet block; a friction cam portion; a rubbing wheel portion; a brake block; a bearing; a brake portion; a brake chassis; 521.. a slot; a guide wheel; 523.. outer cover; 61.. a first pivot; a second pivot member.

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.

As shown in fig. 1-8, the present invention relates to a fall-preventing safety mechanism for a lift truck, wherein the safety lift truck 1 is provided with a pulley block 2 to drive a lift seat 3 thereof to ascend or descend, the pulley block 2 comprises a winding engine 21, an upper transmission pulley 22 (shown in fig. 2), a lower transmission pulley 23 and a transmission sling 24, one end of the transmission sling 24 is fixed at a predetermined position above the safety lift truck 1, and the other end is wound around the winding engine 21, and the transmission sling 24 can cooperate with the upper transmission pulley 22 above the safety lift truck 1 and the lower transmission pulley 23 above the lift seat 3 to drive the lift seat 3 to ascend or descend through the rotation in the forward (upward) and reverse (downward) directions of the winding engine 21;

the brake device 5 includes a brake set 51 (shown in fig. 1 and 3 to 6), the brake set 51 includes a brake wheel 511 and a brake block 512, when the brake cable 24 breaks or other factors cause the lifting seat 3 (a weight load of hundreds of kilograms to several tons when bearing an object) and the brake set 51 freely falls down rapidly, so that the brake wheel 511 rotates clockwise rapidly and generates a large centrifugal force to impact the brake block 512 to swing and deflect towards the brake 4, thereby forcing the brake 4 to generate a tight brake action (shown in fig. 5), and achieving a safety effect of preventing falling.

Furthermore, the brake block 512 is movably connected to a brake seat 50 through a first pivot member 61, the brake wheel 511 is movably connected to the other side of the brake seat 50 through a second pivot member 62, the brake wheel 511 includes a friction cam portion 5111 and a friction wheel portion 5112 (as shown in fig. 3 and 6), the friction cam portion 5111 impacts a bearing 5121 pivoted to the brake block 512 through a cam portion difference (as shown in fig. 3 to 6), the friction wheel portion 5112 is configured to frictionally contact the brake bar 4, when the lift seat 3 moves up and down together with the brake seat 50, the friction wheel portion 5112 is configured to rotate due to frictional contact with the brake bar 4, when the lift seat 3 freely drops down together with the brake seat 51, the friction wheel portion 5112 of the brake wheel 511 rapidly rotates, and accordingly the brake cam portion 5111 rapidly rotates to generate a larger centrifugal force 5111, and the brake block 512 is driven to lift by the cam part drop of the friction cam part 5111 impacting the bearing 5121 pivoted by the brake block 512, so that the brake block 512 swings upwards, and meanwhile, the brake part 5122 of the brake block 512 moves forwards and is instantaneously rubbed and impacted with the brake bar 4 to generate a brake action and a perfect brake function.

In addition, a plurality of protruding ratchet blocks 5110 are arranged at intervals in the circumferential direction of the friction cam part 5111 of the brake 511, so that the friction cam part 5111 forms a cam part fall, when the lifting seat 3 moves up and down together with the brake seat 50, the plurality of protruding ratchet blocks 5110 of the friction cam part 5111 slightly impact (as shown in fig. 4) the brake block 512 to slowly slide, no centrifugal force is generated, the brake block 512 does not swing at a large angle, and a brake bar 4 is not pressed; when the lifting seat 3 and the brake set 51 drop rapidly, the friction wheel 5112 of the brake wheel 511 rotate rapidly, so that the friction cam 5111 rotates rapidly and synchronously and generates a large centrifugal force, and the cam part fall formed by the protruding ratchet block-shaped parts 5110 of the friction cam 5111 impacts the bearing 5121 pivoted to the brake block 512, so that the brake block 512 swings and deflects upwards and simultaneously rubs the brake bar 4 instantly by the brake part 5122 to generate a brake effect of pressing (as shown in fig. 5).

Moreover, the brake device 5 further includes a brake chassis 52, the brake chassis 52 is provided with a slot 521 (shown in fig. 3-6) avoiding the brake bar 4 and a plurality of guide wheels 522 (shown in fig. 3-6), so that the brake chassis 52 can smoothly move up and down along with the lifting seat 3.

In addition, the brake seat 50 of the brake device 5 is fixed to a brake chassis 52, the brake chassis 52 is fixed to a back plate 10 (shown in fig. 1-2), and the back plate 10 is fixed to the lift seat 3.

Moreover, the brake chassis 52 of the brake device 5 can further be provided with an outer cover 523 (as shown in fig. 8), and the brake seat 50 can further be provided with a seat cover 502 (as shown in fig. 6 and 8).

In addition, the upper end of the brake bar 4 can be linked and fixed to the upper proper position of the safety lift 1 through an upper link 41 (as shown in fig. 2), and the lower end of the brake bar 4 can be linked and fixed to the lower proper position of the safety lift 1 through a lower link 42 (as shown in fig. 2).

The lower connecting member 42 includes a first fixing portion 421 (as shown in fig. 2 and 7) and a second fixing portion 422 connected above the first fixing portion 421, the first fixing portion 421 is fixed to one side of the base 13 of the safety lift car 1 by a plurality of first locking components 40, the second fixing portion 422 is spaced from the upper end surface 132 of the base 13 by a distance, the second fixing portion 422 is connected to the lower end of the brake strip 4 by an adjusting screw 43 and at least one nut 44, and the lower end can be finely adjusted by adjusting the upper and lower rotation of the adjusting screw 43, so as to relatively improve the accuracy of the brake operation.

In addition, the brake block 512 of the brake assembly 51 further includes a brake portion 5122 (shown in fig. 4-5) for generating a tight braking action on the brake bar 4, and the brake portion 5122 can be a sharp tooth-shaped surface or a sharp embossed surface.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the present invention can also be modified in materials and structures, or replaced by technical equivalents. Therefore, all structural equivalents which may be made by applying the present invention to the specification and drawings, or by applying them directly or indirectly to other related technical fields, are intended to be encompassed by the present invention.

Claims

1. The anti-falling safety mechanism of the lift truck is used for a safety lift truck (1), wherein the safety lift truck (1) is provided with a pulley block (2) to drive a lifting seat (3) of the safety lift truck to ascend or descend, the pulley block (2) comprises a winch (21), an upper transmission pulley (22), a lower transmission pulley (23) and a transmission sling (24), one end of the transmission sling (24) is fixed at a preset position above the safety lift truck (1), the other end of the transmission sling (24) is wound on the winch (21), and the transmission sling (24) can be matched with the upper transmission pulley (22) arranged above the safety lift truck (1) and the lower transmission pulley (23) arranged above the lifting seat (3) to drive the lifting seat (3) to ascend or descend through forward and reverse rotation of the winch (21); the method is characterized in that:

the safety lifting device comprises a safety lifting vehicle (1), a lifting seat (3) and a brake block (512), wherein a brake strip (4) which is fixed in an up-down longitudinal direction is arranged between the upper part and the lower part of the safety lifting vehicle (1), the lifting seat (3) is combined with a brake device (5) to move up and down along with the lifting seat (3), the brake device (5) comprises a brake group (51), the brake group (51) comprises a brake wheel (511) and a brake block (512), when a transmission lifting rope (24) is broken, the lifting seat (3) and a free falling body of the brake group (51) drop down rapidly, so that the brake wheel (511) rotates clockwise rapidly and generates a larger centrifugal force to impact the brake block (512) to swing and deflect towards the brake strip (4), a tight brake action is generated on the brake strip (4) by forcing, wherein the brake block (512) is movably connected to a brake seat (50) through a first pivoting piece (61), and the other side of the brake block (512) is movably connected to the brake seat (50) through a second pivoting piece (62). The brake (511) comprises a friction cam part (5111) and a friction wheel part (5112), the friction cam part (5111) is used for impacting a bearing (5121) matched and pivoted with the brake block (512), the friction wheel part (5112) is used for friction contact with the brake bar (4), wherein a brake seat (50) of the brake device (5) is fixedly combined with a brake chassis (52), the brake chassis (52) is fixedly combined with a back plate (10), the back plate (10) is fixedly combined with the lifting seat (3), a plurality of convex block-shaped ratchet parts (5110) are arranged at intervals in the circumferential direction of the friction cam part (5111) of the brake (511), the brake block (512) comprises a brake part (5122), the brake part (5122) is a sharp tooth-shaped surface or a sharp brake pressing surface, the brake chassis (52) is provided with a slotted hole (521) and a plurality of guide wheels (522) are arranged, the brake device comprises a brake chassis (52) which can smoothly lift up and down along with a lifting seat (3), wherein the upper end of the brake bar (4) can be linked and fixed with a proper position on the upper side of a safe lifting car (1) through an upper connecting piece (41), the lower end of the brake bar (4) can be linked and fixed with a proper position on the lower side of the safe lifting car (1) through a lower connecting piece (42), the lower connecting piece (42) comprises a first fixing part (421) and a second fixing part (422) connected above the first fixing part (421), the first fixing part (421) is fixedly combined with one side of a base (13) of the safe lifting car (1) through a plurality of first locking components (40), the second fixing part (422) is separated from an upper end surface (132) of the base (13) by a certain distance, and the second fixing part (422) is connected with the lower end of the brake bar (4) through an adjusting screw (43) and at least one nut (44), and the lower end can be finely adjusted by the up-and-down rotation adjustment of the adjusting screw (43).