CN201685101U - Novel hydraulic counterweight structure of vertical ram for oil-free pump system - Google Patents
Novel hydraulic counterweight structure of vertical ram for oil-free pump system Download PDFInfo
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- CN201685101U CN201685101U CN2010201917123U CN201020191712U CN201685101U CN 201685101 U CN201685101 U CN 201685101U CN 2010201917123 U CN2010201917123 U CN 2010201917123U CN 201020191712 U CN201020191712 U CN 201020191712U CN 201685101 U CN201685101 U CN 201685101U
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- vertical ram
- oil
- counterweight
- oil cylinder
- ram
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Abstract
The utility model provides a novel hydraulic counterweight structure of a vertical ram for an oil-free pump system, which is characterized in that each support cylinder used for supporting the vertical ram to move up and down is communicated with oil channels of other one or more counterweight oil cylinders fixed on a frame, so as to form a closed body; and the heads of the counterweight oil cylinders are arranged upwards, and corresponding balance weight is matched with the heads of the oil cylinders. The novel hydraulic counterweight structure of the vertical ram for the oil-free pump system can improve the stability of the vertical ram during the running process greatly, ensure the processing precision of equipment, and also can increase the safety performance of the vertical ram during the running process and save the manufacturing cost and running cost of the equipment.
Description
Technical field
The utility model relates to the counterweight of vertical ram.
Background technology
Vertical ram needs to move up and down at work, generally by driven by motor bolt and nut device, makes vertical ram overcome deadweight, various resistance moves up and down.The vertical ram deadweight of main equipment is very big, and what have reaches several tons, for the load that alleviates screw rod, nut and increase vertical ram stability at work, increases bracing or strutting arrangement generally all will for vertical ram.The method that present vertical ram supports comprises: method one, oil cylinder give the power that vertical ram makes progress; Method two, steel wire rope or chain suspension counterweight connect vertical ram by directive wheel at the other end, give the power that vertical ram makes progress; Method three, utilize the accumulator method, comprise piston accumulator method and bag type accumulator method etc., give the power that vertical ram makes progress.
Method one; when upwards promoting vertical ram to oil cylinder generation strength by oil pump systems; because the vertical ram speed of service at work can constantly change as required; the excessive phenomenon of support degree deficiency or support degree takes place, therefore in the oil cylinder support of can not in time following up easily; jitter phenomenon can appear in vertical ram at the volley; even strong oscillation phenomenon can appear, thereby the employing method for the moment regular meeting machining deviation appears, or the phenomenon of damage equipment appears.And the investment of oil pump systems is also bigger.
Method two, steel wire rope or chain suspension counterweight connect vertical ram by directive wheel at the other end, give the power that vertical ram makes progress, and this is present widely used method.For heavy duty machine tools, because vertical ram is installed on the ram seat, vertical ram not only will move up and down, and to carry out horizontal movement with the ram seat, and it is very long that the vertical ram of heavy duty machine tools moves horizontally distance, and steel wire rope or chain suspension are joined and are easy to tie down other object, not only inconvenient, and exist potential safety hazard, if when being installed on the walking lathe, steel wire rope hangs the method danger of counterweight will be bigger.
Method three, utilize accumulator, comprise piston accumulator and bag type accumulator etc., give the power that vertical ram makes progress.Accumulator is to be in due course to change the energy in the system into compression and can store, and when system needs, will compress again and can discharge, and mends feed system again.Utilize the method, when vertical ram carries out upper and lower displacement, the size of accumulator inner space constantly changes, the pressure of accumulator inside also constantly changes thereupon, excessive or the not enough pressure variation phenomenon of pressure can appear, therefore, vertical ram also jitter phenomenon can occur at the volley, even strong oscillation phenomenon can occur.And then machining deviation can occur, or the phenomenon of damage equipment appears.
Summary of the invention
The purpose of this utility model provides a kind of novel oil-less pump system vertical ram hydraulic counterweight structure, not only can improve the flat recessiveness that vertical ram is in operation greatly, guarantee the machining accuracy of equipment, but also can increase the security performance that vertical ram is in operation, and the manufacturing and the operating cost of the equipment of saving.
The realization the technical solution of the utility model is: a kind of novel oil-less pump system vertical ram hydraulic counterweight structure, the oil circuit of other 1 or many counterweight oil cylinder on it is characterized in that supporting each support cylinder that vertical ram moves up and down and being fixed on frame is communicated with, and forms an obturator; The cylinder head of counterweight oil cylinder makes progress, and mixes corresponding counterweight on cylinder head.
The interior filling medium that supports vertical ram oil cylinder, counterweight oil cylinder is liquid, gas or liquid vapour mixture.
The utility model supports the side of oil cylinder of vertical ram and a side of counterweight oil cylinder is in the equilibrium of forces state basically, principle is equivalent to above-mentioned technical background method two, as long as screw rod a little firmly will be broken equilibrium of forces, vertical ram will move, it is very steady that equipment is moved, reduce the loss of equipment, save the operating cost of equipment.
Especially when vertical ram moved horizontally with the ram case, generally the mode with steel wire rope or chain connection counterweight almost can't realize, gave the method that supports vertical ram oil cylinder generation strength both unstable by oil pump systems, invested big again.With of the present utility model provide be undoubtedly a kind of good method.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, oil cylinder 6 cylinder heads that support counterweight make progress, and are carrying counterweight 5 on the cylinder head, its counterweight coincidence formula P
2=P
1S
2/ S
2((P
2: counterweight; P
1: the weight of ram and annex thereof; S
2: the oil cylinder area of counterweight oil cylinder; S
1: support the oil cylinder area of ram, work as S
1=S
2The time, being equal in weight of the weight of vertical ram and annex thereof and counterweight).The oil cylinder 4 that supports vertical ram 3 is connected by the oil pipe 7 that is connected oil cylinder with the oil cylinder 6 that supports counterweight 5, and has formed an obturator.According to above formula as can be seen, the operating pressure that supports each oil cylinder 4 of vertical ram equates substantially that with the operating pressure of the oil cylinder 6 that supports counterweight both under static state remain the balance of strength.
In the work, the oil cylinder 4 that supports vertical ram 3 gives vertical ram 3 to support, to alleviate the working strength and the mechanical wear of screw rod 1 and nut 2.Nut 2 studdles 1, screw rod 1 supports vertical ram 3.Motor-driven screw rod 1, screw rod 1 rotation promote vertical ram 3 motions, and screw rod 1 direction of rotation difference can make vertical ram 3 move up or down.
When screw rod 1 upwards promotes vertical ram 3, vertical ram 3 moves upward along screw rod 1, at this moment, the balance of strength is broken, the oil cylinder 6 that supports counterweight 5 will form pressure difference under the gravity effect of counterweight 5 and between the oil cylinder 4 of the vertical ram 3 of supporting, support oil cylinder 4 in-cylinder pressures of oil cylinder 6 in-cylinder pressures of counterweight 5, thereby counterweight 5 descends along with the rising of vertical ram 3, be in balance all the time to reach both sides strength greater than vertical ram.
When screw rod 1 promotes vertical ram 3 downwards, the balance of strength is broken, the oil cylinder 4 that supports vertical ram 3 will form pressure difference with the oil cylinder 6 that supports counterweight 5 under the gravity effect of vertical ram 3, support the in-cylinder pressure of oil cylinder 4 in-cylinder pressures of vertical ram 3 greater than the oil cylinder 6 that supports counterweight 5, thereby counterweight 5 rises along with the decline of vertical ram 3, is in balance all the time to reach both sides strength.
This oil cylinder counter weight construction does not need to be equipped with oil pump, motor, control system etc., the manufacturing cost of having saved equipment.Because, support the oil cylinder 4 of vertical ram 3 and the oil cylinder 6 of supporting counterweight 5, be in the poised state of strength all the time.Bigger from gravity by counterweigh, during motion, will produce acceleration with very little active force, avoid the up-down vibration that produces because of excessive kinetic energy, deviation during the work of minimizing equipment and to the damage of equipment.
Claims (2)
1. novel oil-less pump system vertical ram hydraulic counterweight structure, on it is characterized in that supporting each support cylinder (4) that vertical ram (3) moves up and down and being fixed on frame other 1 or the oil circuit of many counterweight oil cylinders (6) are communicated with, and form an obturator; The cylinder head of counterweight oil cylinder (6) makes progress, and mixes corresponding counterweight (5) on cylinder head.
2. a kind of novel oil-less pump system vertical ram hydraulic counterweight structure as claimed in claim 1, the interior filling medium that it is characterized in that supporting vertical ram oil cylinder (4), counterweight oil cylinder (6) is liquid, gas or liquid vapour mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201917123U CN201685101U (en) | 2010-05-14 | 2010-05-14 | Novel hydraulic counterweight structure of vertical ram for oil-free pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201917123U CN201685101U (en) | 2010-05-14 | 2010-05-14 | Novel hydraulic counterweight structure of vertical ram for oil-free pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201685101U true CN201685101U (en) | 2010-12-29 |
Family
ID=43373390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201917123U Expired - Fee Related CN201685101U (en) | 2010-05-14 | 2010-05-14 | Novel hydraulic counterweight structure of vertical ram for oil-free pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201685101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825539A (en) * | 2012-09-25 | 2012-12-19 | 郑州大地机械制造有限公司 | Hydraulic counter weight device applied to high-speed reciprocating motion component |
| CN103851126A (en) * | 2014-03-13 | 2014-06-11 | 辽宁三三工业有限公司 | Square slide sleeper counter weight mechanism for upright lathe |
-
2010
- 2010-05-14 CN CN2010201917123U patent/CN201685101U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825539A (en) * | 2012-09-25 | 2012-12-19 | 郑州大地机械制造有限公司 | Hydraulic counter weight device applied to high-speed reciprocating motion component |
| CN102825539B (en) * | 2012-09-25 | 2016-02-10 | 郑州大地机械制造有限公司 | For the hydraulic counterweight device of high speed reciprocating member |
| CN103851126A (en) * | 2014-03-13 | 2014-06-11 | 辽宁三三工业有限公司 | Square slide sleeper counter weight mechanism for upright lathe |
| CN103851126B (en) * | 2014-03-13 | 2015-04-22 | 辽宁北方重工机器制造有限公司 | Square slide sleeper counter weight mechanism for upright lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20140514 |