WO2011072471A1

WO2011072471A1 - Six cylinder hydraulic scissor lift

Info

Publication number: WO2011072471A1
Application number: PCT/CN2010/000975
Authority: WO
Inventors: 金磊
Original assignee: Jin Lei
Priority date: 2009-12-17
Filing date: 2010-06-29
Publication date: 2011-06-23
Also published as: CN201598139U

Abstract

A six cylinder hydraulic scissor lift comprises a left lifting platform (1) and a right lifting platform (2) which each include a switch box, a base (3) and a working table (4). A scissor arm (5) is provided between the base (3) and the working table (4). The left and right lifting platforms (1,2) each are provided with two coplanar main cylinder (6, 7) and auxiliary cylinder (8, 9). The upper chamber of the main cylinder (6) of the left lifting platform (1) is connected to the lower chamber of the auxiliary cylinder (9) of the right lifting platform (2) in series. The lower chamber of the auxiliary cylinder (8) of the left lifting platform is connected to the upper chamber of the main cylinder (7) of the right lifting platform (2) in series. The left and right lifting platforms (1, 2) are also provided with a single main cylinder (10) respectively. With design of six hydraulic cylinders, the asynchronously lifting problem of two sides of scissor lift is overcomed, so that balance is more stable when the lift is lifting, the instantaneous starting pressure of the lift is reduced to 20MPa from 30MPa, thereby alleviating the problem of the cylinder burdening too much pressure and reducing the capacity requirement for the hydraulic elements in the system.

Description

Six-cylinder hydraulic scissor lift

The utility model relates to a balance lifting machine, in particular to a scissor lifting machine for automatically balancing hydraulic cylinders. Background technique

At present, most of the scissor lifts on the market use mechanical mechanisms to achieve synchronization on both sides. Due to the unique construction of the scissor lift, the system needs to withstand a lot of pressure to start up when it is initially lifted and gradually lowered, so that the pressure on the cylinder will be large. Therefore, the requirements for hydraulic components are very strict, which inevitably increases the manufacturing cost. Utility model content

In view of the deficiencies of the prior art, the utility model provides a six-cylinder hydraulic scissor lifter, which solves the problem of non-synchronization on both sides of the scissor lift during take-off and landing, so that the balance is more stable when the device is lifted, and the system is lowered. Start-up pressure, compact construction, low maintenance and safe operation.

In order to solve the technical problem, the technical solution adopted by the utility model is: a six-cylinder hydraulic scissor lift, comprising two left and right lifting platforms, wherein the lifting platform comprises a distribution box and a base. a shear arm is arranged between the workbench, the base and the workbench, and two co-planar main and auxiliary cylinders are arranged on the left and right lifting platforms, and the main cylinder upper chamber of the left lifting platform and The lower cylinder of the right lift platform is connected in series, and the lower cylinder of the left lift platform is connected in series with the upper cylinder of the right lift platform; the left and right lift platforms are respectively provided with single master cylinders. .

The utility model aims at the deficiencies of the prior art, and changes the original mechanical mechanism to achieve the purpose of lifting and synchronizing the two sides of the device, and adopts the design of six hydraulic cylinders to solve the two sides of the scissor lift. Synchronization issues make the balance more stable when the device is lifted. In addition to the use of the primary and secondary double-acting cylinders, in order to reduce the instantaneous pressure when the system is started, a single-acting main cylinder is added to each side, so that the starting pressure of the equipment is instantaneous.

30Mpa is reduced to 20Mpa, which relieves the problem of excessive pressure on the cylinder and reduces the bearing capacity of the hydraulic components in the system. It benefits from the user and the manufacturer, and can fully guarantee the normal lifting function requirements. Will be greatly reduced, with a more stable power balance. DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

Figure 2 is an internal structural view of the present invention;

Figure 3 is a hydraulic schematic of the present invention. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments thereof.

Referring to FIG. 1 and FIG. 2, the utility model relates to a six-cylinder hydraulic scissor lift, which comprises two left and right lifting platforms 1 and 2, wherein the lifting platforms 1 and 2 each comprise a distribution box and a base. 3 and the worktable 4, the base 3 and the worktable 4 are provided with a shear arm 5, and the left and right lift platforms 1 and 2 are provided with two coplanar main oil cylinders 6, 7 and a sub-cylinder 8, 9. The upper chamber of the main cylinder 6 of the left lifting platform 1 and the lower chamber of the sub-cylinder 9 of the right lifting platform 2 are connected in series, and the lower cylinder of the sub-cylinder 8 of the left lifting platform 1 and the main cylinder 7 of the right lifting platform are The chambers are connected in series; the left and right lifting platforms 1 and 2 are also provided with single master cylinders 10 and 11, respectively. The hydraulic system of the utility model adopts an advanced lifting circuit: mainly includes a main cylinder 6 and a sub-cylinder 9, a sub-cylinder 8 and a main cylinder 7, a single main cylinder 10, and a single main cylinder 1 1. The main cylinder 6 and the main cylinder 7 respectively drive the lifter left and right to lift and lower; the upper chamber of the main cylinder 6 is connected in series with the lower chamber of the sub-cylinder 9, and the upper chamber of the main cylinder 7 is connected in series with the lower chamber of the sub-cylinder 8, so that When the main cylinder 6 and the main cylinder 7 piston rise, the hydraulic oil flowing out of the upper chambers of the two cylinders all flows to the lower chambers of the sub-cylinders 8 and 9, thus driving the left and right lifting platforms 1 and 2 simultaneously to rise and fall. The addition of single master cylinders 10 and 11, to reduce system pressure, both reduces system pressure and increases balance. The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are All should belong to the scope of protection of the present invention.

Claims

Claim

1. A six-cylinder hydraulic scissor lift comprising two left and right lifting platforms, wherein the lifting platform comprises a distribution box, a base and a workbench, and a shear arm is arranged between the base and the workbench. The utility model is characterized in that: two left and right lifting platforms are provided with two co-planar main oil cylinders and auxiliary oil cylinders, wherein the upper cylinder upper chamber of the left lifting platform and the sub-cylinder lower chamber of the right lifting platform are connected in series, The lower cylinder sub-cavity of the left lifting platform is connected in series with the upper cylinder upper chamber of the right lifting platform; and the left and right lifting platforms are respectively provided with a single main cylinder.