CN103434983A

CN103434983A - Forklift working device

Info

Publication number: CN103434983A
Application number: CN2013103795877A
Authority: CN
Inventors: 莫德志; 刘清榕
Original assignee: SHANGHAI LIUGONG FORK TRUCK Co Ltd; LIUZHOU LIUGONG FORK TRUCK Co Ltd; Guangxi Liugong Machinery Co Ltd
Current assignee: SHANGHAI LIUGONG FORK TRUCK Co Ltd; LIUZHOU LIUGONG FORK TRUCK Co Ltd; Guangxi Liugong Machinery Co Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2013-12-11
Anticipated expiration: 2033-08-28
Also published as: CN103434983B

Abstract

A forklift working device is characterized in that two guide rails with T-shaped sections are vertically arranged on a door frame, a sliding sleeve assembly is fixed on a fork arm carrier, the sliding sleeve assembly fixed on the fork arm carrier is connected with the guide rails with the T-shaped sections of the door frame to form a sliding mechanism; one lifting oil cylinder is vertically and fixedly connected with the door frame, the piston rod end of the oil cylinder is connected with a chain support, and an upper chain wheel assembly is connected to the top of the door frame; chains are connected with the door frame, the upper chain wheel assembly, the chain support and the fork arm carrier to form a structure driving the fork arm carrier to move through the oil cylinder. The forklift working device has the advantages that the door frame is simple in structure, easy to machine, low in cost and high in strength rigidity; the sections of the guide rails are in a T shape, and the guide rails can bear force well; the single lifting oil cylinder and the double chains are arranged in the middle, so that the synchronous problem of two oil cylinders does not exist; kinematic pairs arranged between abrasion-resisting materials of the fork arm carrier and the guide rails are in surface contact, and the surface contact stress is small; the abrasion-resisting materials are composite abrasion-resisting materials; the assembling clearance is small, the vibration is small, and the working precision of a forklift is improved.

Description

Fork truck working device

Technical field

The present invention relates to the lifting equipment of engineering mechanism, particularly a kind of fork truck working device.

Background technology

At present, the equipment that hoists of fork truck is partly to consist of outer mast, inner upright mounting, goods shelf, roller, pallet fork, lift oil tank and chain etc. basically, as shown in Figure 1.The deficiency that existing equipment exists is: 1. complex structure, cost is high.2. roller and guide rail (channel-section steel) assembly clearance is large, and Surface Contact is the line contact, and contact stress is large, and guide rail easily is out of shape, and impacts greatly, and vibration is large.3. two lift oil tanks are arranged by both sides, exist work asynchronous, accelerate the deformation of member.

Summary of the invention

Purpose of the present invention just is to provide and a kind ofly can solves that existing complex structure, guide rail contact stress are large, easily distortion, the fork truck working device of the low and high in cost of production problem of operating accuracy.

Solution of the present invention is such: the present invention includes the parts such as door frame, goods shelf, lift oil tank and chain, described door frame is vertically installed with the guide rail in two T-shaped cross sections, described goods shelf is fixed with the sliding sleeve assembly, and the T-shaped cross section guide rail of the sliding sleeve assembly that described goods shelf is fixing and door frame connects into slide mechanism; Described lift oil tank is parallel with door frame agree be fixedly connected with, and the oil cylinder piston end is connected with the chain bearing, and described door frame top is connected with the upper sprocket wheel assembly; Described chain and door frame, upper sprocket wheel assembly, chain bearing, goods shelf connect into the structure that is driven the goods shelf motion by oil cylinder.

Technical scheme also comprises more specifically: the both sides that described T-shaped cross section guide rail is fixed in door frame form vertical door frame frame.

Further: the fixing sliding sleeve assembly of described goods shelf is the chute with T-shaped groove, with the kinematic pair between the T-shaped guide rail in a left side, right T-shaped guide rail, is that face contacts; Described kinematic pair is high-abrasive material.

Further: described chain is two, and the lift oil tank of take is arranged symmetrically with as benchmark, connects and composes single lift oil tank with described chain bearing, upper sprocket wheel assembly, door frame, goods shelf and drives the hoist structure of goods shelf motion of two chains.

Further: described lift oil tank is arranged on the vertical central axis line position of door frame, and piston rod is positioned at lower end with respect to oil cylinder.

Advantage of the present invention is:

1, simple, the easily processing of portal-framed structure, cost are low, and strength rigid is high.

2, guide rail cross section ShiTXing cross section is stressed good.

3, single lift oil tank and chain,, there is not the stationary problem of two oil cylinders in placed in the middle the layout.

4, on the goods shelf assembly, high-abrasive material is that face contacts with the kinematic pair between guide rail, and surface contact stress is little.High-abrasive material is composite abrasion resistance material.

5, assembly clearance is little, vibrates littlely, improves the fork truck operating accuracy.

The accompanying drawing explanation

Accompanying drawing is for explaining the present invention.

Fig. 1 is traditional fork truck working device structural arrangement schematic diagram.

Fig. 2 is structural arrangement schematic diagram of the present invention.

Fig. 3 is that door frame assembly structure of the present invention is arranged schematic diagram.

Fig. 4 is that this delivery crotch assembly structure is arranged schematic diagram.

The specific embodiment

As shown in Figure 2,3, two vertical gate frame-saws of described door frame 1 are vertically installed with right T-shaped guide rail 1-4, left T-shaped guide rail 1-5, the upper bracket 1-3 of door frame 1 top is fixed with chain bearing 1-2, upper sprocket wheel assembly 1-1 is articulated in chain bearing 1-2, door frame 1 below is connected with undersetting 1-7, middle part is connected with middle bearing 1-6, and lift oil tank 3 is fixed in door frame 1 middle part, and door frame 1 is provided with dump ram bearing 1-8 and door frame erection support 1-9.

As shown in Figure 4, the back side of the goods shelf bearing 5-1 of described goods shelf 5 is fixed with the sliding sleeve assembly, and the T-shaped cross section guide rail of described sliding sleeve assembly and door frame 1 connects into slide mechanism, and pallet fork 6 stretches out forward, and in Fig. 3, A is T-shaped guide rail section drawing.

As shown in Figure 2,3, described lift oil tank 3 is one, is arranged on the vertical central axis line position of door frame 1, and the oil cylinder piston rod end is connected with chain bearing 4, and described door frame 1 top is connected with upper sprocket wheel assembly 1-1; Described chain 2 is two, and the lift oil tank 3 of take is arranged symmetrically with as benchmark, connects into single lift oil tank with described chain bearing 4, upper sprocket wheel assembly 1-1, door frame 1, goods shelf 5 and drives the hoist structure of goods shelf motion of two chains.

As shown in Figure 4, the fixing sliding sleeve assembly of described goods shelf 5 is the chute with T-shaped groove, with the kinematic pair 5-3 between the T-shaped guide rail 1-5 in a left side, right T-shaped guide rail 1-4, is that face contacts; Described kinematic pair 5-3 is high-abrasive material, and the described chute with T-shaped groove adopts fixedly kinematic pair 5-3 of upper cover plate 5-1, lower cover 5-4.

Claims

1. a fork truck working device, comprise door frame (1), goods shelf (5), lift oil tank (3) and chain (2), it is characterized in that: described door frame (1) is vertically installed with the guide rail in two T-shaped cross sections, described goods shelf (5) is fixed with the sliding sleeve assembly, and the T-shaped cross section guide rail of the sliding sleeve assembly that described goods shelf (5) is fixing and door frame (1) connects into slide mechanism; Described lift oil tank (3) is parallel with door frame (1) and be fixedly connected with, and the oil cylinder piston end is connected with chain bearing (4), and described door frame (1) top is connected with upper sprocket wheel assembly (1-1); Described chain (2) connects into door frame (1), upper sprocket wheel assembly (1-1), chain bearing (4), goods shelf (5) structure that is driven goods shelf (5) motion by oil cylinder.

2. fork truck working device according to claim 1, it is characterized in that: the both sides that described T-shaped cross section guide rail is fixed in door frame (1) form vertical door frame frame.

3. fork truck working device according to claim 1, it is characterized in that: the fixing sliding sleeve assembly of described goods shelf (5) is the chute with T-shaped groove, with the kinematic pair (5-3) between the T-shaped guide rail in a left side (1-5), right T-shaped guide rail (1-4), is that face contacts; Described kinematic pair (5-3) is high-abrasive material.

4. fork truck working device according to claim 1, it is characterized in that: described chain (2) is two, the lift oil tank (3) of take is arranged symmetrically with as benchmark, connects and composes single lift oil tank with described chain bearing (4), upper sprocket wheel assembly (1-1), door frame (1), goods shelf (5) and drives the hoist structure of goods shelf motion of two chains.

5. according to the described fork truck working device of claim 1 or 4, it is characterized in that: described lift oil tank (3) is arranged on the vertical central axis line position of door frame (1), and piston rod is positioned at lower end with respect to oil cylinder.