CN203656083U - Device for eliminating gap between screw rod and nut on movable cross beam - Google Patents
Device for eliminating gap between screw rod and nut on movable cross beam Download PDFInfo
- Publication number
- CN203656083U CN203656083U CN201320844733.4U CN201320844733U CN203656083U CN 203656083 U CN203656083 U CN 203656083U CN 201320844733 U CN201320844733 U CN 201320844733U CN 203656083 U CN203656083 U CN 203656083U
- Authority
- CN
- China
- Prior art keywords
- nut
- moving beam
- screw rod
- leading screw
- cross beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009434 installation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 20
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Abstract
The utility model relates to a device for eliminating a gap between a screw rod and a nut on a movable cross beam. The device comprises the movable cross beam and the screw rod, wherein the screw rod is mounted on the movable cross beam; a main nut is mounted on the screw rod; a worm wheel and a worm matched with the worm wheel are arranged on the outer side of the main nut; a thrust ball bearing is mounted at the top end of the main nut; a bearing cover fixedly connected with the movable cross beam is mounted at the upper end of the thrust ball bearing; an auxiliary nut fixedly connected to the top end of the main nut is arranged on the inner side of the bearing cover; a locking oil cylinder is fixedly connected to the top end of the bearing cover; a locking piston sleeved on the screw rod is mounted in the locking oil cylinder and is propped against the top end of the auxiliary nut. Before a pressure test, the gap between the main nut and the screw rod is eliminated, so that the test precision is guaranteed and the test purpose is achieved. The device is especially suitable for pressure machines of 5,000 kN or above.
Description
Technical field
The utility model relates to a kind of moving beam feed screw nut gap eliminator, refers in particular to, and is applied on the press machine of large-tonnage (5000kN and more than), can eliminate the device in gap between the leading screw on nut and moving beam.
Background technique
Testing machine is mainly used in the mechanical property test of the modes such as the stretching, compression, bending, shearing of metal, nonmetal, composite material and goods, and the multiple standards that can provide according to GB, ISO, JIS, ASTM, DIN and user is tested and data processing simultaneously.Being widely used in the examination of materials analysis of the industries such as Aero-Space, machine-building, electric wire, rubber plastic, building materials, is the hypothesis testing equipment of the departments such as scientific research institutions, universities and colleges, industrial and mining enterprise.
At present, oil cylinder underneath type compression testing machine (upper beam height is adjustable) is less with feed screw nut gap eliminator, the transmission process of moving beam can not steadily carry out, therefore in the time doing the test that some need to measure distortion, feed screw nut gap can exert an influence to test, affects test accuracy, the test curve that makes testing machine is not smooth change, on numerical value, there is a step, test result is impacted, do not reach the object of test.
Notice of authorization number is that the utility model patent of CN202195021U discloses clearance eliminating device of guide screw rod, can improve testing machine integral rigidity, and the gap of eliminating lead screw pair by the parts such as gap nut, swivel nut and spring that disappear, realizes the steady transmission of moving beam.This device is for the less testing machine of tonnage, can realize this function, but can not eliminate gap completely, especially for 5000kN and above press machine, because the support force of spring is limited, and along with time history elastic force can be decayed gradually, the power value that spring provides does not reach requirement, easily suppress strength, can not realize the object of eliminating gap.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of moving beam feed screw nut gap eliminator, can, before pressure test is carried out, the gap between mother nut and leading screw be eliminated, and realizes the stationarity of moving beam loading and transmission.
The technological scheme that the utility model addresses the above problem is as follows:
A kind of moving beam feed screw nut gap eliminator, comprises moving beam and leading screw, and described leading screw is arranged on moving beam, on described leading screw, mother nut is installed, and the worm screw that described mother nut arranged outside has turbine and matches with turbine, is characterized in that:
The top installed thrust ball bearing of described mother nut, described thrust ball bearing upper end is provided with the bearing cap being fixedly connected with moving beam, the inner side of described bearing cap is provided with the secondary nut that is fixed in mother nut top, the top of bearing cap is connected with locking cylinder, in described locking cylinder, installation sleeve is located at the latching ram on leading screw, and described latching ram is pressed on the top of secondary nut.
Further improving is, in order to reduce the wearing and tearing between mother nut and moving beam, wear-resistant pad to be installed between described mother nut and moving beam.
Described secondary nut and mother nut are bolted to connection.
Further, between described locking cylinder and latching ram, be provided with the first seal ring and the second seal ring.
Working procedure of the present utility model is, when use, hydraulic oil is injected to locking cylinder, because there is pressure between locking cylinder and latching ram, make locking cylinder increase, latching ram declines simultaneously, latching ram is pressed on secondary nut top, and that it is connected with leading screw is locked, and locking cylinder rising drives crossbeam to move up, make mother nut increase locked with leading screw, eliminate the gap between mother nut and leading screw, by mother nut, above pushing away with secondary nut of leading screw silk tooth tightly pinned leading screw the acting in conjunction pressing down of leading screw silk tooth.
The utility model has the advantage of:
1, before pressure test, eliminate the gap between mother nut and leading screw, ensure test accuracy, thereby reached test objective.
2, be applicable to 5000kN and above press machine, make up the limited defect that cannot eliminate leading screw gap of prior art medi-spring support force.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1-locking cylinder; 2-latching ram; 3-bolt; 4-bearing cap;
5-secondary nut; 6-thrust ball bearing; 7-turbine; 8-mother nut;
9-wear-resistant pad; 10-moving beam; 11-leading screw; The 12-the first seal ring;
The 13-the second seal ring; 14-worm screw.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1, a kind of moving beam feed screw nut gap eliminator, comprise moving beam 10 and leading screw 11, described leading screw is arranged on moving beam, mother nut 8 is installed on described leading screw, the worm screw 14 that described mother nut arranged outside has turbine 7 and matches with turbine, the top installed thrust ball bearing 6 of described mother nut 8, described thrust ball bearing upper end is provided with the bearing cap 4 being fixedly connected with moving beam, the inner side of described bearing cap is provided with the secondary nut 5 that is fixed in mother nut top, and described secondary nut can be fixedly connected with by bolt 3 with mother nut.The top of bearing cap is connected with locking cylinder 1, the interior installation sleeve of described locking cylinder 1 is located at the latching ram 2 on leading screw, described latching ram is pressed on the top of secondary nut 5, is provided with the first seal ring 12 and the second seal ring 13 between described locking cylinder and latching ram.In order to reduce the wearing and tearing between mother nut and moving beam, wear-resistant pad 9 is installed between described mother nut and moving beam.
Working procedure of the present utility model is, when use, hydraulic oil is injected to locking cylinder, because there is pressure between locking cylinder and latching ram, make locking cylinder increase, simultaneously latching ram declines, and latching ram is pressed on secondary nut top, and that it is connected with leading screw is locked, and locking cylinder rising drive crossbeam moves up, make mother nut increase locked with leading screw, by mother nut, above pushing away with secondary nut of leading screw silk tooth tightly pinned leading screw the acting in conjunction pressing down of leading screw silk tooth like this.
Claims (4)
1. a moving beam feed screw nut gap eliminator, comprise moving beam (10) and leading screw (11), described leading screw is arranged on moving beam, mother nut (8) is installed on described leading screw, the worm screw (14) that described mother nut arranged outside has turbine (7) and matches with turbine, is characterized in that:
The top installed thrust ball bearing (6) of described mother nut (8), described thrust ball bearing upper end is provided with the bearing cap (4) being fixedly connected with moving beam, the inner side of described bearing cap is provided with the secondary nut (5) that is fixed in mother nut top, the top of bearing cap is connected with locking cylinder (1), the interior installation sleeve of described locking cylinder (1) is located at the latching ram (2) on leading screw, and described latching ram is pressed on the top of secondary nut (5).
2. moving beam feed screw nut gap eliminator according to claim 1, is characterized in that:
Wear-resistant pad (9) is installed between described mother nut and moving beam.
3. moving beam feed screw nut gap eliminator according to claim 1, is characterized in that:
Described secondary nut is fixedly connected with by bolt (3) with mother nut.
4. moving beam feed screw nut gap eliminator according to claim 1, is characterized in that:
Between described locking cylinder and latching ram, be provided with the first seal ring (12) and the second seal ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320844733.4U CN203656083U (en) | 2013-12-19 | 2013-12-19 | Device for eliminating gap between screw rod and nut on movable cross beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320844733.4U CN203656083U (en) | 2013-12-19 | 2013-12-19 | Device for eliminating gap between screw rod and nut on movable cross beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656083U true CN203656083U (en) | 2014-06-18 |
Family
ID=50922473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320844733.4U Expired - Lifetime CN203656083U (en) | 2013-12-19 | 2013-12-19 | Device for eliminating gap between screw rod and nut on movable cross beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656083U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589695A (en) * | 2015-02-04 | 2015-05-06 | 中精集团有限公司 | Precise adjustment device of closing dead point position of full-automatic hydraulic fine-blanking press |
| CN111503235A (en) * | 2020-04-10 | 2020-08-07 | 西安超越机电技术有限责任公司 | Hydraulic gap-eliminating lead screw nut |
| CN114030220A (en) * | 2021-09-28 | 2022-02-11 | 上海华龙测试仪器有限公司 | High-rigidity double-frame loading system |
-
2013
- 2013-12-19 CN CN201320844733.4U patent/CN203656083U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589695A (en) * | 2015-02-04 | 2015-05-06 | 中精集团有限公司 | Precise adjustment device of closing dead point position of full-automatic hydraulic fine-blanking press |
| CN111503235A (en) * | 2020-04-10 | 2020-08-07 | 西安超越机电技术有限责任公司 | Hydraulic gap-eliminating lead screw nut |
| CN111503235B (en) * | 2020-04-10 | 2021-10-01 | 西安超越机电技术有限责任公司 | Hydraulic gap-eliminating lead screw nut |
| CN114030220A (en) * | 2021-09-28 | 2022-02-11 | 上海华龙测试仪器有限公司 | High-rigidity double-frame loading system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 389, Sichuan Honglu, Pudong New Area, Shanghai Patentee after: Shanghai Hualong Test Instruments Co.,Ltd. Address before: No. 389, Sichuan Honglu, Pudong New Area, Shanghai Patentee before: SHANGHAI HUALONG TEST INSTRUMENTS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |