CN211644496U

CN211644496U - Scissors fork lifting mechanism for carrier

Info

Publication number: CN211644496U
Application number: CN202020097834.XU
Authority: CN
Inventors: 肖勇民; 汪明川; 林良川
Original assignee: Shanghai Fawang Cloud Logistics Technology Co ltd
Current assignee: Shanghai Fawang Cloud Logistics Technology Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-10-09
Anticipated expiration: 2030-01-16

Abstract

The utility model provides a scissors fork lifting mechanism for carrier, including the carrier body, carrier body below sets up two forks that are used for lifting, and the fork bottom sets up the landing leg, and the front end and the root of every landing leg set up a scissors fork mechanism that is used for lifting respectively, and scissors fork mechanism on the same landing leg sets up on a scissors fork mounting panel, and the scissors fork mechanism of two landing leg roots is provided with the connecting axle, and the both ends of connecting axle are provided with lifting cylinder, and scissors fork mechanism top sets up fork tooth, and lifting cylinder drives scissors fork mechanism action and then promotes fork tooth and go up and down to reach the purpose of lifting. Adopt two scissors fork structures to lift, two lift cylinder realize rigid connection through axle and shaft coupling and scissors fork, make whole lift structure lift steadily, more be fit for a plurality of trays and pile up the transport. The scissors fork is specially designed, and is hinged out by adopting a dry-type bushing, so that the wear resistance and the assembly precision are improved, the maintenance is convenient, and the service life of the whole lifting structure is prolonged.

Description

Scissors fork lifting mechanism for carrier

Technical Field

The utility model relates to a fork truck technical field, specificly relate to a scissors fork lifting mechanism for carrier.

Background

Conventional transport fork truck, its lifting mechanism are chain mechanism usually, and it is big to rock in the course of the work, and fork truck walking wheel can incline backward when lifting, and the structure is not too stable, and the goods can rock.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a scissors fork lifting mechanism for carrier is provided.

In order to solve the above problems, the technical solution of the present invention is as follows:

a scissors fork lifting mechanism for carrier, including the carrier body, carrier body below sets up two forks that are used for lifting, characterized by, the fork bottom sets up the landing leg, the front end and the root of every landing leg set up a scissors fork mechanism that is used for lifting respectively, scissors fork mechanism on the same landing leg sets up on a scissors fork mounting panel, scissors fork mechanism of two landing leg roots is provided with the connecting axle, the both ends of connecting axle are provided with lifting cylinder, scissors fork mechanism top sets up fork tooth, lifting cylinder drives scissors fork mechanism action and then promotes fork tooth and go up and down to reach the purpose of lifting.

The scissors fork mechanism comprises an outer scissors fork and an inner scissors fork, the outer scissors fork is hinged with the middle part of the inner scissors fork, the inner scissors fork is provided with a scissors fork top plate mounting block, and the top plate mounting block is finally connected with fork teeth; one end of the scissors outer fork is provided with a scissors fork fulcrum, and the scissors fork mounting plate connects the two scissors fork bodies on the same supporting leg through the scissors fork fulcrum to form a double-scissors fork lifting structure.

The scissor fork mechanism connecting shafts at the roots of the two supporting legs are connected through a coupling.

The fork tooth below sets up weighing sensor, and weighing sensor passes through the bolt assembly on the weighing sensor mounting panel, and the weighing sensor mounting panel passes through the bolt and is in the same place with scissors fork body assembly, and the fork tooth passes through the bolt and is in the same place with the pressure sensor assembly on the weighing sensor.

The articulated shaft of scissors fork is last to set up dry-type bush, and the articulated shaft outside sets up the axle head baffle, and the axle head baffle passes through the screw lock on the articulated shaft.

The scissors fork top plate mounting blocks penetrate through the scissors inner fork and are hinged together, and the scissors fork top plate mounting block rotating shaft is locked on the scissors inner fork through screws.

A follower wheel is arranged below the front end of each supporting leg.

Beneficial effect, the utility model discloses a two scissors fork structures lift, and two lift cylinder realize rigid connection through axle and shaft coupling and scissors fork, make whole lift structure lift steady, more are fit for a plurality of trays and pile up the transport. The scissors fork is specially designed, and is hinged out by adopting a dry-type bushing, so that the wear resistance and the assembly precision are improved, the maintenance is convenient, and the service life of the whole lifting structure is prolonged.

The four weighing sensors are assembled on the lifting structure, the automatic weighing function is realized, the designed weighing system is high in weighing precision, and meanwhile, the weighing system can be communicated with the WMS, and the critical flow of the logistics industry, namely weight accounting, can be automatically completed.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a schematic structural view of the entire carrier of the present invention.

Fig. 2 is a schematic diagram of a scissor fork lifting system.

Fig. 3 is an exploded view of the fork body.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In this embodiment, the self-service pallet jack, see fig. 1, the fork legs for lifting the load are a scissor fork lifting system 900, which is a double scissor fork mechanism.

Referring to fig. 2, the scissor fork lifting system 900 includes a leg 910, a lift cylinder 920, a connecting shaft 930, a scissor fork body 940, a load cell 950, a load cell mounting plate 960, a fork tooth 970, a coupling 980, a directional wheel assembly 990, and a scissor fork mounting plate 991. The unmanned pallet truck is mainly used for carrying pallets, when a plurality of pallets are stacked together, the center of gravity of goods is high, so that the lifting process needs to be stable, and the stability of a lifting structure is one of key technologies of the unmanned pallet truck. The scissor fork legs 910 are mounted to the pallet truck frame 200. The left connecting shaft and the right connecting shaft penetrate through the scissors fork body 940 and are assembled together through the coupler 980, the lifting oil cylinders 920 are assembled at the shaft ends of the connecting shafts 930, and thus the two lifting oil cylinders are rigidly connected with the lifting mechanisms together, the two lifting mechanisms move up and down simultaneously in the lifting process, the purpose of stably lifting cargoes is achieved, and the hidden troubles that the cargoes incline and fall off due to the fact that the oil amount in the two cylinders is different and the cargoes are pressed and deformed by different loads of the two hydraulic cylinders in the synchronous control process are overcome. The scissors fork body 940 is connected with the scissors fork mounting plate 991 through a shaft, the scissors fork mounting plate is fixed on the supporting legs 910 through bolts, the weighing sensor 950 is assembled on the weighing sensor mounting plate 960 through bolts, the weighing sensor mounting plate 960 is assembled with the scissors fork body 940 through bolts, and the fork teeth are assembled with the pressure sensor on the weighing sensor through bolts. When lifting the goods, the goods is pressing on the fork tooth, and weight reads out through the pressure sensor among the weighing sensor 950, and the data that 4 weighing sensors read obtain through certain conversion and detect goods weight value, and the goods weight can be transmitted to the AGV industrial computer on, then transmits to the WMS system in, realizes the automatic weighing function.

With continued reference to fig. 2, the working principle of the scissor fork lifting structure is: the power source of the lifting structure of the double scissors fork is two lifting oil cylinders 920, and since hydraulic oil can be compressed and deformed when the hydraulic oil cylinders bear pressure, the two hydraulic oil cylinders are difficult to ensure that the bearing pressure of the two hydraulic oil cylinders is the same in the lifting process, the two oil cylinders are rigidly connected together by adopting the two connecting shafts 930 and the coupling 980 to ensure that the scissors fork lifts the scissors fork synchronously; in addition, the distance between the two oil cylinders is long, so that the two connecting shafts 930 are connected together by the coupler 980, the problem that the machining precision is difficult to guarantee due to the fact that a long shaft is machined (coaxiality is difficult to guarantee in the machining process on a machine tool due to the fact that the long shaft and the thin shaft are soft) is avoided, and meanwhile, the assembling is convenient. A link shaft 930 connects the lift cylinder 920 with the first two scissor fork bodies 940. Referring to fig. 3, the scissors fork main body 940 mainly includes a scissors outer fork 941, a scissors inner fork 942, a bearing 943, a hinge shaft 944, a shaft end baffle 945, a dry bushing 946, a scissors fork top plate mounting block rotating shaft 947, a scissors fork fulcrum 948, and a scissors fork top plate mounting block 949. The scissor fork top plate mounting block 949 is mounted together with the weighing sensor mounting plate 960 through a bolt, the scissor outer fork 941 is fixed on the scissor fork mounting plate 991 through the scissor fork fulcrum 948 dry-type bushing 946, and the shaft end baffle 945 is fixed on the scissor fork mounting plate 991; the rolling bearing 945 is arranged on the other side of the outer fork 941 of the scissors, the rolling bearing 945 can slide along the clamping groove of the weighing sensor mounting plate 960 and can move in a vertical direction at the hinged point in the lifting process, the rolling bearing 945 is arranged on the other side of the inner fork 942, and the rolling bearing 945 can only move back and forth in a horizontal direction and can only move in a self-rotating mode at the hinged point in the lifting process. The two scissor fork bodies 940 which are connected with the lifting oil cylinder 920 through a hinge shaft 930 are active scissor forks, and integrally push the weighing sensor mounting plate 960 and the fork teeth to vertically move up and down under the action of an oil cylinder power source; the other two scissor bodies passively move up and down under the action of the active scissor body connected with the lift cylinder 920.

Referring to fig. 3, the scissors fork main body 940 mainly includes a scissors outer fork 941, a scissors inner fork 942, a bearing 943, a hinge shaft 944, a shaft end baffle 945, a dry bushing 946, a scissors fork top plate mounting block rotating shaft 947, a scissors fork fulcrum 948, and a scissors fork top plate mounting block 949. The matching precision of the scissors fork hinged part determines the stability and the service life of the whole lifting mechanism in the lifting process, and the scissors fork hinged part adopts a dry bushing, so that the matching precision is high and the wear resistance is good; in addition, the dry type bushing does not need to be periodically added with lubricating oil, and is convenient to maintain. The outer scissors fork 941 and the inner scissors fork 942 are connected together through the hinge shaft 944 and the dry bushing 946, and then the shaft end baffle 945 is locked on the hinge shaft 944 through a screw, so that the axial positioning is realized. The scissors fork top plate mounting block axle 947 passes through the scissors inner fork 942 and is hinged to the scissors fork top plate mounting block 949, and then the scissors fork top plate mounting block axle 947 is locked to the scissors inner fork 942 by a screw. The scissor fork mounting plate 991 can connect the two scissor fork bodies 940 through the scissor fork fulcrum 948 to form a double scissor fork lifting structure, and a dry bushing and a shaft end baffle are required to be assembled at the shaft end of the scissor fork fulcrum 948.

Adopt two scissors fork structures to lift, two lift cylinder realize rigid connection through axle and shaft coupling and scissors fork, make whole lift structure lift steadily, more be fit for a plurality of trays and pile up the transport. The scissors fork is specially designed, and is hinged out by adopting a dry-type bushing, so that the wear resistance and the assembly precision are improved, the maintenance is convenient, and the service life of the whole lifting structure is prolonged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A scissors fork lifting mechanism for carrier, including the carrier body, carrier body below sets up two forks that are used for lifting, characterized by, the fork bottom sets up the landing leg, the front end and the root of every landing leg set up a scissors fork mechanism that is used for lifting respectively, scissors fork mechanism on the same landing leg sets up on a scissors fork mounting panel, scissors fork mechanism of two landing leg roots is provided with the connecting axle, the both ends of connecting axle are provided with lifting cylinder, scissors fork mechanism top sets up fork tooth, lifting cylinder drives scissors fork mechanism action and then promotes fork tooth and go up and down to reach the purpose of lifting.

2. The scissor fork lifting mechanism for a transport cart according to claim 1, wherein the scissor fork mechanism comprises an outer scissor fork and an inner scissor fork, the outer scissor fork and the inner scissor fork are hinged at the middle part, the inner scissor fork is provided with a scissor fork top plate mounting block, and the top plate mounting block is finally connected with the fork teeth; one end of the scissors outer fork is provided with a scissors fork fulcrum, and the scissors fork mounting plate connects the two scissors fork bodies on the same supporting leg through the scissors fork fulcrum to form a double-scissors fork lifting structure.

3. The scissors fork lift mechanism of claim 1, wherein the scissors fork mechanism connecting shafts at the root of the two legs are connected by a coupling.

4. The scissor fork lift mechanism of a cart according to claim 1, wherein a load cell is disposed under the fork teeth, the load cell is assembled to the load cell mounting plate by a bolt, the load cell mounting plate is assembled to the scissor fork body by a bolt, and the fork teeth are assembled to the pressure sensor of the load cell by a bolt.

5. The scissors fork lift mechanism of claim 2, wherein the hinge shaft of the scissors fork is provided with a dry bushing, and a shaft end stopper is provided outside the hinge shaft and locked to the hinge shaft by a screw.

6. The scissor lift mechanism of a vehicle of claim 2, wherein the scissor top plate mounting blocks are hinged together through the inner scissor fork and the scissor top plate mounting block pivot is locked to the inner scissor fork with screws.

7. The scissor fork lift mechanism for a vehicle of claim 1, wherein a follower wheel is disposed below a front end of each leg.