CN201102877Y

CN201102877Y - Manual hydraulic tray transporting cart

Info

Publication number: CN201102877Y
Application number: CNU2007200465080U
Authority: CN
Inventors: 翁红俊; 何志生
Original assignee: JIANGSU DALI MACHINERY MANUFACTURING Co Ltd
Current assignee: JIANGSU DALI MACHINERY MANUFACTURING Co Ltd
Priority date: 2007-10-15
Filing date: 2007-10-15
Publication date: 2008-08-20
Anticipated expiration: 2017-10-15

Abstract

The utility model provides a manual hydraulic pallet van, comprising a front wheel, a cargo fork frame, a back wheel, a base, an oil pump, a working cylinder and a control handle. The cargo fork frame consists of a top plate, a front plate, a front plate seat and a cargo fork, wherein, the top plate is welded on the cargo fork through the welded front plate and the front plate seat to improve the strength and stiffness of the cargo fork frame and also to enhance the bearing capability to carry the cargo with the weight of about 5T. A cylinder head and an upper port sealing ring are arranged on the interface of an upper port of the working cylinder and a piston rod, and the cylinder head is pressed tightly on the upper port sealing ring. The base is provided with a hydraulic system control valve which adopts a damping valve core for controlling and baffling the speed of oil drainage and controlling the cargo fork frame to fall slowly. The van of the utility model is reasonable in structure, smart in control, safe and reliable in operation, which not only increases the bearing weight, but also solves the problem of the safety and reliability in the process of loading and transportation.

Description

Manual hydraulic tray transport cart

Technical field

The utility model relates to a kind of tray truck, specifically is that a kind of load carrying ability is than conventional much bigger manual hydraulic tray transport cart.

Background technology

The manual type transport trolley is a kind of handbarrow that hoists commonly used in present factory floor, the warehouse.The load carrying ability of existing manual transport trolley generally is no more than 3T, according to market study, the carrying of king size instrument fails scientifically to solve always, and the method that mechanical industry operator such as heavy petrochemical industry can only take to break the whole up into parts is carried, this method for carrying labour intensity is big, inefficiency.Existing 3T hoists, and to be top board directly weld with pallet fork through header board the transport trolley goods shelf, and holding capacity is little, and intensity is not high, and goods shelf is yielding; And operating cylinder is steel casting, and plunger rod is thin, and load-carrying capacity is low, can not satisfy the carrying of large-tonnage object; The HYDRAULIC CONTROL SYSTEM valve adopts two steel ball structures etc. in addition, and the undamped valve core structure does not have tangible cushion characteristic, and the goods shelf descending speed is too fast, and the damage of dropping easily causes transporting goods.

Summary of the invention

The utility model has overcome the deficiencies in the prior art, provides a kind of rational in infrastructure, and bearing capacity is big, the manual hydraulic tray transport cart of may command goods shelf descending speed.

In order to solve the technical matters of above-mentioned existence, the technical solution adopted in the utility model is: a kind of manual hydraulic tray transport cart, comprise front-wheel, goods shelf, trailing wheel, base, oil pump, oil cylinder, bar handle, described goods shelf comprises top board, preceding plate body and pallet fork, top board is welded on the pallet fork through preceding plate body, described oil cylinder comprises oil storage barrel, operating cylinder and places the plunger rod of operating cylinder inner chamber that described preceding plate body comprises the header board and the preceding panel seat of welding mutually; Described operating cylinder is suitable for reading to be provided with cylinder cap and last mouth sealing ring with the plunger rod junction, and cylinder cap is pressed on the mouth sealing ring; The HYDRAULIC CONTROL SYSTEM valve is installed in the described base.

Described HYDRAULIC CONTROL SYSTEM valve comprises unloader valve and governor valve, unloader valve is made up of push rod, push rod spring, steel ball, governor valve is made up of spool, awl spring, damping spool, spring, stopper, bonded washer, screw, the damping valve core cavity is equipped with spring and stopper, damping spool and valve core chamber are equipped with the awl spring, damping spool one side is equipped with screw and is sealed by bonded washer, and unloader valve and governor valve are provided with the turnover oilhole and communicate with oil storage barrel, oil pump, operating cylinder respectively.

Plunger rod diameter in the described operating cylinder is φ 40-50mm.

Compared with prior art, the beneficial effects of the utility model are: this transport trolley goods shelf header board is through preceding panel seat and pallet fork welding, and the preceding panel seat of increase can improve the strength and stiffness of goods shelf, and load-carrying capacity significantly improves, can carry 5T left and right sides goods, make things convenient for the client to carry bulky load; The operating cylinder sealing mechanism that is provided with suitable for reading, easy to maintenance, sealing member is not fragile during assembling, and is safe and reliable during the super large load, strengthened assembling and maintainability, improved work efficiency; Because load carrying ability increases, and has strengthened the diameter of plunger rod and oil pump pump valve during design, and has scientifically selected the rational proportion relation, it is laborsaving to work, and alleviates working strength; The HYDRAULIC CONTROL SYSTEM valve has adopted the damping spool, be used to control the draining speed, buffering draining speed, the control goods shelf slowly descends, control is flexible, and easy to maintenance, safety of operation is reliable, effectively improve overweight, extra heavy the efficiency of shipment that hoists, and guaranteed safe and reliable in uninstall process.This transport trolley compact conformation is operated nimblely, and load-carrying capacity is big, and it has not only strengthened load capacity effectively, has solved the urgent need on the market, and has solved the safe and reliable problem of loading transportation.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the goods shelf structural representation;

Fig. 3 is the left view of goods shelf shown in Figure 2;

Fig. 4 is the hydraulic system structure scheme drawing;

Fig. 5 be among Fig. 4 A-A to HYDRAULIC CONTROL SYSTEM valve arrangement scheme drawing.

Among the figure, front-wheel 1, pallet fork 2, preceding panel seat 3, header board 4, top board 5, bar handle 6, Bar end 7, oil cylinder 8, oil pump 9, base 10, trailing wheel 11, operating cylinder 12, last mouth sealing ring 13, cylinder cap 14, oil storage barrel 15, plunger rod 16, push rod 17, push rod spring 18, oilhole 19, steel ball 20, oilhole 21, spool 22, awl spring 23, damping spool 24, spring 25, stopper 26, bonded washer 27, screw 28, oilhole 29, governor valve 30, unloader valve 31.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described.

A kind of manual hydraulic tray transport cart shown in Figure 1 comprises front-wheel 1, goods shelf, trailing wheel 11, base 10, oil pump 9, oil cylinder 8, bar handle 6.Among Fig. 2,3, goods shelf comprises top board 5, header board 4, preceding panel seat 3, pallet fork 2, and top board 5 is welded on the pallet fork 2 through header board 4, the preceding panel seat 3 of welding mutually.

Among Fig. 4, oil cylinder 8 comprises oil storage barrel 15, operating cylinder 12 and places the plunger rod 16 of operating cylinder inner chamber, oil storage barrel 15, operating cylinder 12 are welded on the base 10, operating cylinder 12 is suitable for reading to be equipped with mouth sealing ring 13 with plunger rod 16 junctions, and compress by cylinder cap 14, plunger rod 16 diameters are φ 40-50mm; Oil pump 9 also is installed on the base, and the HYDRAULIC CONTROL SYSTEM valve is installed in the base 10.

Among Fig. 5, the HYDRAULIC CONTROL SYSTEM valve comprises unloader valve 31 and governor valve 30, and unloader valve is made up of push rod 17, push rod spring 18, steel ball 20, and governor valve is made up of spool 22, awl spring 23, damping spool 24, spring 25, stopper 26, bonded washer 27, screw 28.Unloader valve communicates with oil storage barrel 15 through turnover oilhole 19, and governor valve communicates with oil pump 9, operating cylinder 12 respectively through

turnover oilhole

21,29.

Bar end 7 can be in I, II, three different gears of III, stirs Bar end 7, and the push rod 17 that drives the HYDRAULIC CONTROL SYSTEM valve through connecting rod moves back and forth, thereby controls the mode of operation of whole hydraulic efficiency pressure system:

When the Bar end on the bar handle 67 was in the I shelves, 17 pairs of steel balls 20 of push rod did not act on, and this moment is when upwards lifting bar handle 6, then oil pump 9 oil suctions, steel ball 20 is opened left, and power fluid is interior through 19 sucking-offs of turnover oilhole from oil storage barrel 15, enters in the pump chamber of oil pump 9 through turnover oilhole 21 again; When depressing bar handle 6, oil pump 9 compressions, steel ball 20 cuts out to the right, pressure oil promotes spool 22 and opens, enter operating cylinder 12 through ladder oilhole and damping spool 24 by turnover oilhole 29, promote plunger rod 16 and rise, finish the motion that hoists thereby drive goods shelf.

When the Bar end on the bar handle 67 is in the II shelves, push rod 17 backs down steel ball 20 left, and steel ball 20 is in normally open, and this moment is if press bar handle 6 up and down, though oil pump 9 energy oil suctions, but when oil pump 9 compressions, steel ball 20 is closing oil path to the right, does not produce pressure oil in the working oil path, can't push spool 22 open, power fluid is directly got back to oil storage barrel 15 through turnover oilhole 19, and operating cylinder 12 is not worked, and is in the neutral state.

When the Bar end on the bar handle 67 is in the III shelves, push rod 17 backs down steel ball 20 left, and promote spool 22 through steel ball 20, pressure oil in this moment operating cylinder 12, enter in the ladder oilhole by damping spool 24 through turnover oilhole 29, and then through spool 22, the turnover oilhole 19 get back to lentamente in the oil storage barrel 15, plunger rod 16 is slowly descended, thus goods shelf also slowly decline.

Claims

1, a kind of manual hydraulic tray transport cart, comprise front-wheel (1), goods shelf, trailing wheel (11), base (10), oil pump (9), oil cylinder (8), bar handle (6), described goods shelf comprises top board (5), preceding plate body and pallet fork (2), top board is welded on the pallet fork through preceding plate body, described oil cylinder (8) comprises oil storage barrel (15), operating cylinder (12) and places the plunger rod (16) of operating cylinder inner chamber, it is characterized in that: plate body comprises the header board (4) and the preceding panel seat (3) of welding mutually before described; Described operating cylinder (12) is suitable for reading to be provided with cylinder cap (14) and last mouth sealing ring (13) with the plunger rod junction, and cylinder cap is pressed on the mouth sealing ring; Described base is equipped with the HYDRAULIC CONTROL SYSTEM valve in (10).

2, manual hydraulic tray transport cart according to claim 1, it is characterized in that: described HYDRAULIC CONTROL SYSTEM valve comprises unloader valve (31) and governor valve (30), unloader valve is by push rod (17), push rod spring (18), steel ball (20) is formed, governor valve is by spool (22), awl spring (23), damping spool (24), spring (25), stopper (26), bonded washer (27), screw (28) is formed, the damping valve core cavity is equipped with spring and stopper, damping spool and valve core chamber are equipped with the awl spring, damping spool one side is equipped with screw and is sealed by bonded washer, unloader valve and governor valve be provided with the turnover oilhole (19) (21) (29) respectively with oil storage barrel (15), oil pump (9), operating cylinder (12) communicates.

3, manual hydraulic tray transport cart according to claim 1 is characterized in that: plunger rod (16) diameter in the described operating cylinder is φ 40-50mm.