CN105502206B - A kind of foot-operated foldable lifting freight - Google Patents

Abstract

The invention discloses a foot-operated foldable lifting freight vehicle, which comprises a fixed vehicle frame, a lifting vehicle frame, a folding trolley frame, a lifting mechanism, a folding positioning mechanism, a locking mechanism and a pedal speed change power mechanism; the fixed vehicle The two sides of the rear end of the frame are provided with push frame fixing blocks; the foldable push frame is arranged on the push frame fix block; the foldable push frame is connected with the push frame fixed block with a folding positioning mechanism; The folding trolley frame is provided with a lifting mechanism; the lifting mechanism is provided with a lifting frame; the lifting mechanism is connected with the lifting frame with a locking mechanism; the pedal shifting power mechanism is arranged on the folding trolley The lower part uses a wire rope and a lifting mechanism to transmit power. The present invention realizes multi-level lifting and secondary transportation in one flat trolley, reduces labor intensity, the push handle can be folded, saves space, and the lifting frame can be disassembled and used as a trolley alone, which is flexible and convenient, and can meet different operations need.

Description

A foot-operated foldable lift truck

technical field

The invention relates to a flexible and convenient cargo trolley, which is powered by pedals, can realize multi-level lifting, and has foldable push handles.

Background technique

At present, most of the freight trolleys are too simple in structure and have fewer functions. Fortunately, small cars generally only add a folding function, which is too simple. Now that the express delivery industry is on the rise, ordinary freight trolleys can no longer meet the needs of the express delivery industry. At this time, a brand new freight trolley is needed, which is convenient, efficient, and labor-saving to undertake the work of freight transportation. Therefore, a pedal-type foldable multi-purpose trolley is designed. A level lift trolley is necessary.

Contents of the invention

In view of the above technical problems, the object of the present invention is to propose a flexible and convenient cargo trolley that provides power by pedals, can realize multi-level lifting, and has foldable push handles.

The technical solution of the present invention is achieved in the following way: a foot-operated foldable lifting freight car, including a fixed frame, a lifting frame, a folding trolley frame, a lifting mechanism, a folding positioning mechanism, a locking mechanism and a pedal shifting mechanism Power mechanism; the front end of the bottom of the fixed frame is provided with two directional wheels, and the rear end is provided with two universal wheels; the two sides of the rear end of the fixed frame are provided with hand push frame fixing blocks; the folding The push frame is arranged on the fixed block of the push frame; the folding push frame is connected with the fixed block of the push frame by a folding positioning mechanism; the folding push frame is provided with a lifting mechanism; the lifting mechanism is provided with a lifting mechanism The vehicle frame; the lifting mechanism is connected with the lifting vehicle frame with a locking mechanism; the pedal shifting power mechanism is arranged at the lower part of the folding trolley frame, and the power is transmitted by the steel wire rope and the lifting mechanism.

The lifting mechanism includes a lifting rod, a lifting bracket, and a bearing; the lifting rod is arranged on a folding trolley, the lifting bracket is arranged on the lifting rod, and can be lifted and lowered along the lifting rod, and the lower end of the lifting rod is arranged There is a bearing, and the upper end is provided with a lifting rod pulley; a bearing is also provided at the position where the lifting bracket is close to the lifting rod;

The locking mechanism includes a lock column, a front lock block, a rear lock block and a concave lock groove; the lock column is connected to the concave lock groove, the front lock block and the rear lock block in sequence, and the lock column is provided with a reset spring.

The pedal variable speed power mechanism includes a left case cover, a right case cover, a driving shaft, a driven shaft and a pedal; the driving shaft is provided with a left case cover, a large ratchet, an outer ratchet, and a double sliding gear in sequence. , inner ratchet, small ratchet, pedal and right case cover; the driven shaft is set above the driving shaft; rollers, left case cover, large driven gear, small driven gear and right case cover are arranged in turn on the driven shaft and the drum; the left gear of the double sliding gear meshes with the large driven gear, the right gear meshes with the reverse gear, and the reverse gear meshes with the small driven gear; the double sliding gear is also set There are levers.

Preferably, the folding positioning mechanism includes a spring, a movable locking block, a bottom plate and a cover plate; the movable locking block is arranged between the bottom plate and the cover plate; one end of the movable locking block protrudes from the bottom plate so as to extend into the lock hole for positioning; A spring is arranged on the movable locking block.

Preferably, small rollers are provided at the bottom of the lift frame.

Preferably, both sides of the upper end of the folding trolley are provided with reversing pulleys; the reversing pulleys include large pulleys and small pulleys.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

A pedal-type foldable lift truck of the present invention adopts pedal power to realize multi-level lift and secondary transport in one flat trolley, which reduces labor intensity, push handles can be folded, saves space, and lifts the frame It can be disassembled and used as a small trolley alone, which is flexible and convenient, and can meet different operation needs.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the use state structure diagram of a kind of foot-operated collapsible freight car of the present invention;

Accompanying drawing 2 is the initial state structure schematic diagram of a kind of foot-operated collapsible lift truck of the present invention;

Accompanying drawing 3 is the structure schematic diagram of the folded state of a kind of foot-operated foldable lift truck of the present invention;

Accompanying drawing 4 is the structural schematic diagram of the elevating pole of a kind of foot-operated collapsible elevating freight car of the present invention;

Accompanying drawing 5 is a schematic diagram of the position structure of the lifting bracket and the locking mechanism of a foot-operated foldable lift truck of the present invention;

Accompanying drawing 6 is a schematic diagram of the structural state of the folding positioning mechanism of a foot-operated foldable lift truck of the present invention;

Accompanying drawing 7 is a schematic diagram of the structural state of the locking mechanism of a foot-operated foldable lift truck of the present invention;

Accompanying drawing 8 is a schematic structural diagram of a pedal-operated speed-changing power mechanism of a pedal-type foldable lift truck of the present invention;

Accompanying drawing 9 is a structural schematic diagram of a reversing pulley block of a foot-operated foldable lift truck of the present invention.

Among them: 1. Fixed frame, 2. Lifting frame, 3. Folding trolley frame, 4. Lifting mechanism, 5. Folding positioning mechanism, 6. Locking mechanism, 7. Variable speed power mechanism, 8. Fixed trolley frame Block, 9, battery, 11, directional wheel, 12, universal wheel, 21, small roller, 31, reversing pulley block, 41, lifting rod, 42, lifting bracket, 43, stressed bearing, 44, auxiliary bearing, 45 , lifting rod pulley, 51, spring, 52, movable lock block, 53, bottom plate, 54, cover plate, 61, lock column, 62, front lock block, 63, rear lock block, 64, concave lock groove, 71, left Case cover, 72, right case cover, 73, drive shaft, 74, driven shaft, 75, foot pedal, 76, large ratchet, 77, outer ratchet, 78, duplex sliding gear, 79, inner ratchet, 80 , small ratchet, 81, cylinder, 82, large driven gear, 83, small driven gear, 84, reverse gear, 85, driving lever, 311, bearing pulley, 312, guide pulley.

Detailed ways

The present invention is described below in conjunction with accompanying drawing.

As shown in accompanying drawings 1-9, it is a kind of foot-operated foldable lifting truck according to the present invention, including fixed vehicle frame 1, lifting vehicle frame 2, folding trolley frame 3, lifting mechanism 4, folding positioning mechanism 5 , a locking mechanism 6 and a pedal shifting power mechanism 7; the front end of the bottom of the fixed frame 1 is provided with two directional wheels 11, and the rear end is provided with two universal wheels 12; the two rear ends of the fixed frame 1 The side is provided with a hand push frame fixing block 8; the folding hand push frame 3 is arranged on the hand push frame fixing block 8; the folding hand push frame 3 is connected with the hand push frame fixing block 8 with a folding positioning mechanism 5; The folding trolley frame 3 is provided with a lifting mechanism 4; the lifting mechanism 4 is provided with a lifting vehicle frame 2, and the bottom of the lifting vehicle frame 2 is provided with a small roller 21; the lifting mechanism 4 and the lifting vehicle frame 2 It is connected with a locking mechanism 6; the pedal shifting power mechanism 7 is arranged at the bottom of the folding trolley 3, and a steel wire rope is used to transmit power with the lifting mechanism 4; the upper end of the folding trolley 3 is provided with reversing Pulley block 31 ; the reversing pulley block 31 includes a large pulley 311 and a small pulley 312 .

Described elevating mechanism 4 comprises elevating rod 41, elevating rod 42 and bearing 43; , the lower end of the lifting rod 41 is provided with a bearing 43, and the upper end is provided with a lifting rod pulley 44; a bearing 43 is also provided at a position where the lifting bracket 42 is close to the lifting rod.

The folding positioning mechanism 5 includes a spring 51, a movable locking block 52, a bottom plate 53 and a cover plate 54; the movable locking block 52 is arranged between the bottom plate 53 and the cover plate 54; one end of the movable locking block 52 grows out of the bottom plate 53 , so as to extend into the locking hole for positioning; the movable locking block 52 is provided with a spring 51 .

The locking mechanism 6 includes a lock cylinder 61, a front lock block 62, a rear lock block 63 and a concave lock groove 64; The lock cylinder 61 is provided with a return spring.

The foot-operated speed change power mechanism 7 comprises a left case cover 71, a right case cover 72, a driving shaft 73, a driven shaft 74 and a pedal 75; the driving shaft 71 is successively provided with a left case cover 71 and a large ratchet 76 , the outer ratchet 77, the double sliding gear 78, the inner ratchet 79, the small ratchet 80, the pedal 75 and the right case cover 72; the driven shaft 74 is arranged on the top of the driving shaft 73; the driven shaft 74 is sequentially provided with rollers 81, left case cover 71, large driven gear 82, small driven gear 83, right case cover 72 and cylinder 81; the left side gear of described duplex slip gear 78 meshes with large driven gear 82, and the right side gear It meshes with the reverse gear 84, and the reverse gear 84 meshes with the small driven gear 83; the dual sliding gear 78 is also provided with a driving lever 85, which is exposed outside the foot-operated speed change power mechanism 7.

When it is necessary to use the lifting function, when the lever 85 is moved to the left gear of the double sliding gear 78, the left gear of the double sliding gear meshes with the large driven gear 82, and the pedal 75 driven shaft is stepped on. 74 drives the drum 81 to rotate, the drum 81 is connected with a wire rope, the other end of the wire rope is connected to the bottom of the lifting rod 41 through the pulley block 31, and one end of the other wire rope is fixed on the lifting bracket 42, and the other end is connected through the lifting rod pulley 44. To the top of the folding hand push frame 3, when the cylinder 81 will pull the lifting rod 41 and the lifting bracket 42 to rise simultaneously, on the lifting bracket 42, the lifting frame 2 is arranged, so the lifting frame 2 rises together; When arriving at the right side gear place of duplex sliding gear 78, counter gear 84 meshes with small driven gear 83 all the time, and by two times of external meshing, the action at this moment can make elevating bracket 42 descend. Pedal pedal 75 cooperates with shifting, can realize ascending and descending, the speed of pedaling can control speed, small ratchet 80 cooperates inner ratchet 79, can realize one-way rotation, depress pedal 75 elevating vehicle frame 2 ascends or descends A little, unclamp pedal 75, recover initial position and prepare for next operation. At the same time, the large ratchet 76 and the outer ratchet 77 can ensure that the input shaft can only have one direction of rotation, ensuring controllable motion. When the folding hand push frame 3 needs to be folded, the movable locking block 52 is pulled out of the lock hole, and the lock column 61 is pulled out of the concave lock groove 64 to realize the folding of the folding hand push frame 3 . If you need to use the lift frame separately, pull the lock cylinder 61 back to the concave lock groove 64, then the lift frame 2 can be separated from the lift frame 42, and you can use it as a dolly independently. If you want to recover, pull the lift frame 2 The lock part of the lock part is aligned with the lock of the lifting bracket 42, and the lock column 61 is put back to get final product.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (4)

1. A foot-operated foldable lift freight car is characterized in that: it includes a fixed vehicle frame, a lifting vehicle frame, a folding trolley frame, a lifting mechanism, a folding positioning mechanism, a locking mechanism and a foot-operated speed change power mechanism; The front end of the bottom of the fixed frame is provided with two directional wheels, and the rear end is provided with two universal wheels; the two sides of the rear end of the fixed frame are provided with push frame fixing blocks; the foldable push frame is arranged on on the fixed block of the hand push frame; the folding hand push frame is connected with the fixed block of the hand push frame by a folding positioning mechanism; the folding hand push frame is provided with a lifting mechanism; the lifting mechanism is provided with a lifting vehicle frame; The lifting mechanism is connected with the lifting frame with a locking mechanism; the pedal shifting power mechanism is arranged at the lower part of the folding trolley, and the power is transmitted by the steel wire rope and the lifting mechanism; The lifting mechanism includes a lifting rod, a lifting bracket, and a bearing; the lifting rod is arranged on a folding trolley, the lifting bracket is arranged on the lifting rod, and can be lifted and lowered along the lifting rod, and the lower end of the lifting rod is arranged There is a bearing, and the upper end is provided with a lifting rod pulley; a bearing is also provided at the position where the lifting bracket is close to the lifting rod; The locking mechanism includes a lock column, a front lock block, a rear lock block and a concave lock groove; the lock column is connected to the concave lock groove, the front lock block and the rear lock block in sequence, and the lock column is provided with a return spring; The pedal variable speed power mechanism includes a left case cover, a right case cover, a driving shaft, a driven shaft and a pedal; the driving shaft is provided with a left case cover, a large ratchet, an outer ratchet, and a double sliding gear in sequence. , inner ratchet, small ratchet, pedal and right case cover; the driven shaft is set above the driving shaft; rollers, left case cover, large driven gear, small driven gear and right case cover are arranged in turn on the driven shaft and the drum; the left gear of the double sliding gear meshes with the large driven gear, the right gear meshes with the reverse gear, and the reverse gear meshes with the small driven gear; the double sliding gear is also set There are levers. 2. A foot-operated foldable lift truck according to claim 1, characterized in that: the folding positioning mechanism includes a spring, a movable locking block, a bottom plate and a cover plate; the movable locking block is arranged on the bottom plate and the cover plate Between; one end of the movable locking block grows out of the bottom plate, so as to extend into the lock hole for positioning; the movable locking block is provided with a spring. 3. A foot-operated foldable lift truck according to claim 1, characterized in that: the bottom of the lift frame is provided with small rollers. 4. A foot-operated foldable lift truck according to claim 1, characterized in that: the upper end of the foldable trolley is provided with reversing pulleys on both sides; the reversing pulleys include large pulleys and small pulley.