CN201421417Y

CN201421417Y - Pressure device

Info

Publication number: CN201421417Y
Application number: CN2009201422768U
Authority: CN
Inventors: 黄文进
Original assignee: KUNSHAN JULIN SCIENTIFIC EDUCATIONAL INDUSTRIAL Co Ltd
Current assignee: KUNSHAN JULIN SCIENTIFIC EDUCATIONAL INDUSTRIAL Co Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-03-10
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses a pressure device for applying pressure to a rotary shaft of a to-be-tested rolling bearing. The pressure device comprises a frame body, a first mounting hole, a pressure rod, a pressure sensor and a pressure head, wherein the first mounting hole is longitudinally arranged on the frame body, the pressure head contacts the rotary shaft of the rolling bearing, and the pressure rod, the pressure sensor and the pressure head are sequentially slidably arranged inside the first mounting hole from top to bottom. The pressure device solves problems of the prior art and hascomparatively high measurement precision and capability of dynamically testing the rolling bearing.

Description

Pressue device

Technical field

The utility model relates to a kind of pressue device, particularly a kind of pressue device of exerting pressure to rotating shaft.

Background technology

The rolling bearing proving installation is a kind of device of widely used test rolling bearing performance, it is exerted pressure in the rotating shaft of rolling bearing by a pressue device and tests the performance of rolling bearing, this pressue device is generally forms such as hydraulic pressurization, counterweight pressurization, lever pressurization, but pressue device of the prior art can only be satisfied with the static test of rolling bearing, this is that the friction force between rotating shaft and the pressue device will cause the wearing and tearing of pressue device because when carrying out dynamic test; In addition, pressue device of the prior art adopts piezoelectric strain sheet sensor usually, has caused various problems such as low precision, adjustable extent be narrow.

The utility model content

For overcoming above-mentioned shortcoming, the purpose of this utility model is to provide a kind of dynamic test and higher pressue device of measuring accuracy that can carry out rolling bearing.

In order to reach above purpose, the technical solution adopted in the utility model is: a kind of pressue device, be used for exerting pressure to the rotating shaft of rolling bearing to be tested, it comprise a support body, longitudinally be opened in first mounting hole on the described support body, be slidingly arranged in depression bar, pressure transducer in described first mounting hole and the pressure head that contacts with the rotating shaft of rolling bearing successively from top to bottom, described pressure head directly contacts with rotating shaft, has reduced frictional dissipation.

The utility model further improves and is that described pressure head comprises a rolling bearing, has further reduced frictional dissipation.

The utility model further improves and is that described pressure transducer is the resistive pressure sensor that measuring accuracy is higher and usable range is wider.

The utility model further improves and is, the edge laterally offers a plurality of second mounting holes on the described support body, be equipped with a guide rod respectively in described each second mounting hole, when described support body when described guide rod slides, can repeatedly test on the one hand by the stressed size that lever principle can change rolling bearing inner ring, the experimental result essence is cut reliably, the opposing party aspect can also change the relative position between described pressure head and the rotating shaft, with the influence for test result of the deviation at the diverse location place of eliminating rotating shaft.

The utility model further improves and is, the edge laterally offers the 3rd mounting hole that connects with described first mounting hole on the described support body, the relative position place offers a stopper slot on the described pressure head, is equipped with a guide rod between described the 3rd mounting hole and the stopper slot.

The utility model further improves and is, has at least one to be connected with a rhizoid bar in the described guide rod, by rotating described screw mandrel, and position change that can implement device.

Owing to adopted technique scheme, made to the utlity model has following advantage: 1,, reduced frictional dissipation, thereby realized the dynamic test of rolling bearing owing to adopt rolling bearing and the contacted mode of rotating shaft; 2, owing to adopted resistive pressure sensor, improved measuring accuracy.

Description of drawings

Accompanying drawing 1 is the main cut-open view of the utility model pressue device;

Accompanying drawing 2 is the stereographic map of the utility model pressue device support body;

Accompanying drawing 3 is the dismounting figure of the utility model pressue device pressure head;

Accompanying drawing 4 is the working state schematic representation of the utility model pressue device.

Wherein: 1, support body; 2, depression bar; 3, pressure transducer; 4, pressure head; 5, guide rod; 6, sleeve; 7, rotating shaft; 11, first mounting hole; 12, second mounting hole; 13, the 3rd mounting hole; 41, stopper slot.

Embodiment

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

Referring to accompanying drawing 1 to shown in the accompanying drawing 3, a kind of pressue device, be used for exerting pressure to the rotating shaft of rolling bearing to be tested, it comprise a T-shaped support body 1, longitudinally be opened in first mounting hole 11 on the support body, from top to bottom be slidingly arranged in successively depression bar 2 in first mounting hole 11, resistive pressure sensor 3 and with the contacted pressure head 4 of the rotating shaft of rolling bearing, the bottom of this pressure head 4 has a furcation, and this furcation is rotatably connected to a rolling bearing by an axle; Also be fixedly connected with a sleeve 6 that is used for fixing pressure head 4 on the support body 1, this sleeve 6 is used for fixing depression bar 2 and is threaded with compression column with fixed 2, and depression bar 2 one ends withstand on the pressure transducer 3.

Also be provided with the linear bearing 6 that is used to reduce friction along laterally offering to be equipped with respectively between a guide rod 5, the second mounting holes 12 and the guide rod 5 in 12, two second mounting holes 12 of two second mounting holes on the support body 1; Go back on the support body 1 along laterally offering the 3rd mounting hole 13 that connects with first mounting hole 11, the 3rd mounting hole 13 parallels with second mounting hole 12, relative position place on the pressure head 4 also offers a stopper slot 41, this stopper slot 41 extends longitudinally ovalize, stopper slot 41 can be done translation by relative the 3rd mounting hole 13, also be equipped with a guide rod 5 between the 3rd mounting hole 13 and the stopper slot 41, this guide rod 5 also is connected with a rhizoid bar simultaneously.

Shown in accompanying drawing 4, rolling bearing on this pressue device pressure head 4 compresses mutually with rotating shaft 7, rotating shaft 7 uniform rotation are to provide the dynamic test condition of rolling bearing, regulating depression bar 2 moves downward, thereby promotion is positioned at the pressure transducer 3 of first mounting hole 11 to move down jointly and acts in the rotating shaft 7 with pressure head 4, pressure transducer 3 is converted to electric signal with the acting force in the external world and outputs test data, thereby the magnitude numerical value that provides the diverse location in rotating shaft to exert pressure produces when the diverse location of rotating shaft is subjected to different radial loads axially and the radial force regularity of distribution thereby can record rolling bearing; Whole device can also be along two guide rod 5 translations to change the relative position between rolling bearing and the rotating shaft, with of the influence of parameters such as the roughness of eliminating rotating shaft diverse location place, diameter for test result, also be equipped with a guide rod 5 between the 3rd mounting hole 13 and the stopper slot 41, this guide rod 5 is connected with a rhizoid bar, can carry out moving of whole device by rotating this screw mandrel, guide rod 5 has also guaranteed the depth of parallelism in rolling bearing axle center in addition, finally reaches the dynamic applied voltage test of rolling bearing.

By above-mentioned embodiment, be not difficult to find out that the utility model is a kind of dynamic test and higher pressue device of measuring accuracy that can carry out rolling bearing.

Above embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1, a kind of pressue device, be used for exerting pressure, it is characterized in that to the rotating shaft of rolling bearing to be tested: it comprise a support body (1), longitudinally be opened in first mounting hole (11) on the described support body, be slidingly arranged in depression bar (2), pressure transducer (3) in described first mounting hole (11) and the pressure head (4) that contacts with the rotating shaft of rolling bearing successively from top to bottom.

2, pressue device according to claim 1 is characterized in that: described pressure head (4) comprises a rolling bearing.

3, pressue device according to claim 1 is characterized in that: described pressure transducer (3) is a resistive pressure sensor.

4, pressue device according to claim 1 is characterized in that: described support body (1) is gone up along laterally offering a plurality of second mounting holes (12), is equipped with a guide rod (5) respectively in described each second mounting hole (12).

5, pressue device according to claim 1, it is characterized in that: described support body (1) is gone up along laterally offering the 3rd mounting hole (13) that connects with described first mounting hole (11), described pressure head (4) is gone up the relative position place and is offered a stopper slot (41), is equipped with a guide rod (5) between described the 3rd mounting hole (13) and the stopper slot (41).

6, according to claim 4 or 5 described pressue devices, it is characterized in that: have at least one to be connected in the described guide rod (5) with a rhizoid bar.