CN215374782U

CN215374782U - Loading mechanism of creep endurance testing machine

Info

Publication number: CN215374782U
Application number: CN202120801919.6U
Authority: CN
Inventors: 杨光
Original assignee: Changchun Kexin Test Instrument Co ltd
Current assignee: Changchun Kexin Test Instrument Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-31
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a loading mechanism of a creep endurance testing machine, which comprises a box body structure, a worm and gear assembly and a ball screw assembly, wherein the worm and gear assembly is arranged on the box body structure; the ball screw assembly is provided with a ball screw nut integrated in the box structure; the worm gear and worm assembly is provided with a worm gear in transmission with the ball screw, and a worm of the worm gear and worm assembly is in transmission with the worm gear to drive the ball screw to rotate; the worm of the worm gear assembly is configured as a power input part, and the worm gear assembly drives the ball screw to reciprocate up and down along the vertical direction through the transmission matching of the worm gear and the ball screw nut. The loading mechanism integrates the worm and gear assembly, the ball screw assembly and the anti-rotation assembly, and has simple structure and stable performance; the mechanism adopts a standardized design, has good manufacturability, reduces the production cost, has good assembly process performance, and is simple to install and convenient to maintain.

Description

Loading mechanism of creep endurance testing machine

Technical Field

The utility model relates to the technical field of material creep tests, in particular to a loading mechanism of a creep endurance testing machine.

Background

The creep endurance testing machine is the only testing machine variety needing batch configuration in a material laboratory, and as long as the laboratory needs to perform a creep endurance test, the number of the creep endurance testing machines generally configured in the same specification is more than 10. The design and production of such a tester results in a large impact on the traditional "single-stand" production model of the tester. The original processing, assembling, debugging and maintaining cost which occupies a smaller part in the selling price is obvious, and the low efficiency and the time consumption become the maximum killer of the profit. The most obvious embodiment is the loading mechanism of the creep testing machine.

The loading mechanism of the creep endurance testing machine generally adopted by current testing machine manufacturers generally comprises a worm gear speed reducer, a transmission system, a ball screw pair positioning and guiding bearing structure, a ball screw anti-rotation structure and the like, and although each part has clear functions, the structure is loose, so that the loading mechanism not only occupies a large installation area, but also occupies a large space in the axial direction. Even, some loading mechanisms may need to change the installation reference, which not only improves the processing precision, but also increases the difficulty of assembly and maintenance.

In the prior art, although the electric cylinder, the lead screw lifter and other molded products exist, the structure and the installation mode of the electric cylinder and the lead screw lifter are not suitable for the creep endurance testing machine.

Therefore, based on the above technical problems, there is a need for developing a loading mechanism suitable for the current stage creep rupture testing machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a loading mechanism of a creep and endurance testing machine, which has the advantages of stable performance, excellent process, compact structure and reduced cost.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model relates to a loading mechanism of a creep and endurance testing machine, which comprises:

a box structure;

the worm and gear assembly is integrated with the box body structure; and

a ball screw assembly assembled with the case structure and having a ball screw penetrating the case structure;

the ball screw assembly is provided with a ball screw nut integrated in the box structure;

the worm gear and worm assembly is provided with a worm gear in transmission with the ball screw, and a worm of the worm gear and worm assembly is in transmission with the worm gear to drive the ball screw to rotate;

the worm of the worm gear assembly is configured as a power input part, and the worm gear assembly drives the ball screw to reciprocate up and down along the vertical direction through the transmission matching of the worm gear and the ball screw nut.

Further, the box structure includes:

a case body having a hollow interior to form a transmission chamber; and

the upper end cover is integrated at the upper end of the box body;

the upper end cover is fixedly assembled with the box body through an upper end cover fastening bolt;

the middle part of the upper end cover is configured into a flange body protruding outwards, and the peripheral direction of the flange body is formed into an assembly body;

a first embedding space is formed on one side, facing the transmission chamber, of the flange body;

and the assembly body of the upper end cover is fixedly assembled with the box body through the upper end cover fastening bolt.

Further, the ball screw assembly includes:

the bearing structures are symmetrically assembled in the box body; and

the ball screw nut is positioned in the middle of the transmission chamber and sleeved outside the ball screw to transmit with the ball screw;

the lower part of the transmission chamber of the box body is downwards sunken to form a second embedding space;

the bearing structure located above the ball screw is embedded into the first embedding space, and the bearing structure located below the ball screw is embedded into the second embedding space.

Further, the bearing structure includes:

the bearing sleeve is sleeved outside the ball screw; and

a bearing fitted with the bearing housing;

the bearing sleeve is connected with the end face of the ball nut.

Further, the worm and gear assembly includes:

the worm wheel is sleeved on the outer side of the ball screw nut, and the lower part of the ball screw nut is fixedly assembled with the worm wheel through a ball screw nut bolt so as to rotate together with the worm wheel;

the worm is partially arranged in the box body in a penetrating manner and extends along the horizontal direction;

the worm is arranged in the box body, and the part of the worm is meshed with the worm wheel so as to drive the worm wheel to rotate;

the two end parts of the worm extend to the outside of the box body, the two ends of the worm are power input ends, and the two power input ends are respectively a motor power input end and a manual power input end;

the worm with the junction of box installs the worm bearing, just the worm bearing passes through the retaining ring spacing, the worm with the junction of box is through worm sealing washer seal installation.

Further, a sealing ring is arranged at the joint of the ball screw and the bottom of the box body;

a top washer is mounted at the joint of the ball screw and the top of the upper end cover, and the top washer is fixedly assembled with the upper end cover through a bolt;

the upper end of the ball screw is configured to be a positioning connection end connected with an external host machine table board;

and an anti-rotation assembly is integrated at the lower end of the ball screw.

Further, the anti-rotation assembly includes:

the fixing plate is fixedly assembled with the box body through bolts;

the bearing guide plate is assembled and fixed with the fixed plate and extends downwards along the vertical direction; and

the supporting plate is fixedly connected with the lower end of the ball screw at one end and is connected with the bearing guide plate in a sliding manner at the other end;

the supporting plate bearing is installed at the matched end of the supporting plate and the bearing guide plate, a guide groove is formed in the bearing guide plate along the length direction of the bearing guide plate, and the supporting plate bearing slides in the guide groove.

Further, a bottom washer is mounted at the joint of the supporting plate and the ball screw, and the bottom washer is fixedly assembled with the ball screw through a bolt;

one end, far away from the ball screw, of the supporting plate is connected with the supporting plate bearing through a shaft, and a bearing washer is arranged at the joint of the shaft and the supporting plate bearing.

In the technical scheme, the loading mechanism of the creep and endurance testing machine provided by the utility model has the following beneficial effects:

the loading mechanism integrates the worm and gear assembly, the ball screw assembly and the anti-rotation assembly, and has simple structure and stable performance; the mechanism adopts a standardized design, has good manufacturability, reduces the production cost, has good assembly process performance, and is simple to install and convenient to maintain.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram of a loading mechanism of a creep and endurance testing machine according to an embodiment of the present invention;

FIG. 2 is a top view of a worm gear assembly of a creep rupture tester loading mechanism provided in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a worm of a loading mechanism of a creep rupture tester provided in an embodiment of the present invention.

Description of reference numerals:

1. a box structure; 2. a ball screw assembly; 3. a worm gear assembly; 4. an anti-rotation component; 10. a bolt;

101. a box body; 102. a flange body; 103. an assembly body; 104. the upper end cover is fastened with a bolt; 105. a top gasket; 106. a seal ring;

201. a ball screw nut; 202. a ball screw; 203. a bearing; 204. a bearing housing;

301. a worm; 302. a worm gear; 303. a motor power input end; 304. a manual power input; 305. a worm bearing; 306. a bearing retainer ring; 307. a worm seal ring;

401. a support plate; 402. a bearing guide plate; 403. a guide groove; 404. a fixing plate; 405. a bottom gasket; 406. a pallet bearing; 407. a bearing washer; 408. a shaft.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

See fig. 1-3;

a box structure 1;

a worm gear assembly 3 integrated with the box body structure 1; and

a ball screw assembly 2 assembled with the case structure 1 and having a ball screw 202 penetrating the case structure 1;

the ball screw assembly 2 is provided with a ball screw 201 integrated in the box body structure 1;

the worm and gear assembly 3 is provided with a worm wheel 302 which is in transmission with the ball screw 201, and the worm 301 of the worm and gear assembly 3 is in transmission with the worm wheel 302 to drive the ball screw 201 to rotate;

the worm 301 of the worm gear assembly 3 is configured as a power input part, and the worm gear assembly 3 drives the ball screw 202 to reciprocate up and down in the vertical direction through the transmission cooperation of the worm wheel 302 and the ball screw 201.

Specifically, this embodiment discloses a loading mechanism suitable for creep endurance testing machine, wherein, this loading mechanism mainly includes worm gear subassembly 3, ball screw subassembly 2 and box structure 1, and wherein worm gear subassembly 3 is as the input part of power, and it rotates through worm 301 drive worm wheel 302 to ball screw 202 that drives ball screw subassembly 2 moves along vertical direction, thereby realizes the loading. The box structure 1 is an assembly structure of the ball screw assembly 2 and the worm gear assembly 3.

Preferably, the box structure 1 in this embodiment includes:

a case 101 hollow inside to form a transmission chamber; and

an upper end cover integrated at the upper end of the box body 101;

the upper end cover is fixedly assembled with the box body 101 through an upper end cover fastening bolt 104;

the middle part of the upper end cover is configured as a flange body 102 protruding outwards, and the peripheral direction of the flange body 102 is formed into an assembly body 103;

a first embedding space is formed on one side, facing the transmission chamber, of the flange body 102;

the upper end cover assembly 103 is fixedly assembled with the box body 101 through an upper end cover fastening bolt 104.

The specific structure of the case structure 1 is defined in detail here, and it comprises a case 101 and an upper end cap fitted on the upper end of the case 101. In addition, the upper end cover of the embodiment adopts a double-flange spigot positioning structure, and an assembly body 103 of the upper end cover is fixedly assembled with a corresponding position of the box body 101 through an upper end cover fastening bolt 104.

Preferably, the ball screw assembly 2 in the present embodiment includes:

a bearing structure symmetrically assembled in the case 101; and

the ball screw 201 is positioned in the middle of the transmission chamber and sleeved outside the ball screw 202 to transmit with the ball screw 202;

the lower part of the transmission chamber of the box body 101 is recessed downwards to form a second embedding space;

the bearing structure located above the ball screw 201 is fitted into the first fitting space, and the bearing structure located below the ball screw 201 is fitted into the second fitting space.

Wherein, bearing structure includes:

a bearing housing 204 sleeved outside the ball screw 202; and

a bearing 203 fitted with a bearing housing 204;

the bearing sleeve 204 is connected to an end surface of the ball nut 201.

Here, the structure of the ball screw assembly 2 is defined in detail, wherein the ball screw assembly 2 has a ball screw 202 penetrating the housing 101 and extending in the vertical direction, and a ball screw 201 driven by the ball screw 202 to drive the ball screw 202 to move in the vertical direction, and at the same time, two sets of bearing structures are arranged in the housing 101, the bearings 203 of the bearing structures adopt radial thrust bearings, the two bearing structures are symmetrically arranged, and support the worm wheel 302, the ball screw 201 to rotate, and bear the axial force generated by the movement of the ball screw 202, namely, the test force and the snapping anti-vibration force.

Preferably, the worm and gear assembly 3 in the present embodiment includes:

the worm wheel 302 is sleeved on the outer side of the ball screw 201, and the lower part of the ball screw 201 is fixedly assembled with the worm wheel 302 through a ball screw bolt so as to rotate together with the worm wheel 302;

a worm 301 partially penetrating the case 101 and extending in the horizontal direction;

the worm 301 is arranged in the box body 101, and the worm gear 302 is meshed with the worm 301 to drive the worm gear 302 to rotate;

two end parts of the worm 301 extend to the outside of the box body 101, two ends of the worm 301 are power input ends, and the two power input ends are respectively a motor power input end 303 and a manual power input end 304;

a worm bearing 305 is installed at the joint of the worm 301 and the box body 101, the worm bearing 305 is limited by a bearing retainer 306, and the joint of the worm 301 and the box body 101 is installed in a sealing mode through a worm sealing ring 307.

The present embodiment further describes the structure of the worm and gear assembly 3, wherein the worm 301 extends to the outside of the box 101, one end is a motor power input end 303, and the other end is a manual power input end 304; when the host computer of the motor power input end 303 is powered off accidentally, the operator uses the manual power input end 304 to unload the motor manually.

The worm 301 of this embodiment is engaged with the inner worm wheel 302 to drive the worm wheel 302 to rotate, and the thread rolling nut 201 is fixedly connected with the worm wheel 302, so that the inner ball nut 201 rotates along with the worm wheel 302, thereby driving the ball screw 202 to move in the vertical direction.

Preferably, in this embodiment, a sealing ring 106 is installed at a connection position of the ball screw 202 and the bottom of the box 101;

a top washer 105 is arranged at the joint of the ball screw 202 and the top of the upper end cover, and the top washer 105 is fixedly assembled with the upper end cover through a bolt 10;

the upper end of the ball screw 202 is configured as a positioning connection end for connection with an external host table;

the lower end of the ball screw 202 is integrated with an anti-rotation assembly 4.

Wherein, above-mentioned anti-rotation component 4 includes:

a fixing plate 404 assembled and fixed with the box 101 through a bolt 10;

a bearing guide plate 402 assembled and fixed with the fixing plate 404 and extending downward in the vertical direction; and

a supporting plate 401, one end of which is fixedly connected with the lower end of the ball screw 202 and the other end of which is slidably connected with a bearing guide plate 402;

a supporting plate bearing 406 is mounted at one end of the supporting plate 401 matched with the bearing guide plate 402, a guide groove 403 is formed in the bearing guide plate 402 along the length direction of the bearing guide plate, and the supporting plate bearing 406 slides in the guide groove 403.

In addition, a bottom washer 405 is installed at the joint of the supporting plate 401 and the ball screw 202, and the bottom washer 405 is fixedly assembled with the ball screw 202 through a bolt 10;

the end of the supporting plate 401 far away from the ball screw 202 is connected with a supporting plate bearing 406 through a shaft 408, and a bearing washer 407 is arranged at the joint of the shaft 408 and the supporting plate bearing 406.

The anti-rotation component 4 capable of preventing the rotation of the ball screw 202 is further limited, and in order to realize the up-and-down movement of the ball screw 202, the rotation of the ball screw needs to be avoided, so the anti-rotation component 4 is designed below, and meanwhile, in order to realize the guiding of the movement of the ball screw 202 along the vertical direction, the ball screw 202 moves in a certain range and track, the supporting plate bearing 406 and the bearing guide plate 402 form guiding, and the supporting plate bearing 406 can be embedded into and slide in the guide groove 403 of the bearing guide plate 402, so that the guiding and limiting are realized for the ball screw 202.

Meanwhile, as a further preferable technical solution, two microswitches may be additionally installed in the guide groove 403 of this embodiment, and used as an electrical limit for the moving stroke of the ball screw 202, so as to protect the application safety of the loading mechanism.

the loading mechanism integrates the worm and gear assembly 3, the ball screw assembly 2 and the anti-rotation assembly 4 into a whole, and has simple structure and stable performance; the mechanism adopts a standardized design, has good manufacturability, reduces the production cost, has good assembly process performance, and is simple to install and convenient to maintain.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims

1. Creep rupture test machine loading mechanism, its characterized in that, this loading mechanism includes:

a box structure (1);

a worm gear assembly (3) integrated with the box structure (1); and a ball screw assembly (2) assembled with the box structure (1) and having a ball screw (202) penetrating through the box structure (1);

the ball screw assembly (2) is provided with a ball screw nut (201) integrated in the box body structure (1);

the worm gear-worm assembly (3) is provided with a worm gear (302) in transmission with the ball screw (201), and a worm (301) of the worm gear-worm assembly (3) is in transmission with the worm gear (302) to drive the ball screw (201) to rotate;

the worm (301) of the worm and gear assembly (3) is configured as a power input part, and the worm and gear assembly (3) drives the ball screw (202) to reciprocate up and down in the vertical direction through the transmission matching of the worm wheel (302) and the ball screw nut (201).

2. The creep rupture tester loading mechanism of claim 1, wherein the case structure (1) comprises:

a case (101) having a hollow interior to form a transmission chamber; and an upper end cover integrated at the upper end of the box body (101);

the upper end cover is fixedly assembled with the box body (101) through an upper end cover fastening bolt (104);

the middle part of the upper end cover is configured to be a flange body (102) protruding outwards, and an assembly body (103) is formed in the axial direction of the flange body (102);

a first embedding space is formed on one side, facing the transmission chamber, of the flange body (102);

and an assembly body (103) of the upper end cover is fixedly assembled with the box body (101) through the upper end cover fastening bolt (104).

3. The creep-endurance testing machine loading mechanism according to claim 2, wherein the ball screw assembly (2) comprises:

a bearing structure symmetrically assembled in the box body (101); the ball screw nut (201) is located in the middle of the transmission chamber and sleeved outside the ball screw (202) to be transmitted with the ball screw (202);

the lower part of the transmission chamber of the box body (101) is sunken downwards to form a second embedding space;

the bearing structure located above the ball screw nut (201) is embedded in the first embedding space, and the bearing structure located below the ball screw nut (201) is embedded in the second embedding space.

4. The creep rupture tester loading mechanism of claim 3, wherein the bearing structure comprises:

the bearing sleeve (204) is sleeved outside the ball screw (202); and

a bearing (203) cooperating with the bearing housing (204);

the bearing sleeve (204) is connected with the end face of the ball nut (201).

5. The creep-endurance testing machine loading mechanism according to claim 4, wherein the worm gear assembly (3) comprises:

the worm wheel (302) is sleeved on the outer side of the ball screw nut (201), and the lower part of the ball screw nut (201) is fixedly assembled with the worm wheel (302) through a ball screw nut bolt so as to rotate together with the worm wheel (302);

a worm (301) which is partially arranged in the box body (101) in a penetrating way and extends along the horizontal direction;

the worm (301) is arranged in the box body (101) and is meshed with the worm wheel (302) to drive the worm wheel (302) to rotate;

two end parts of the worm (301) extend to the outside of the box body (101), two ends of the worm (301) are power input ends, and the two power input ends are respectively a motor power input end (303) and a manual power input end (304);

worm (301) with worm bearing (305) are installed to the junction of box (101), just worm bearing (305) are spacing through bearing collar (306), worm (301) with the junction of box (101) is through worm sealing washer (307) seal installation.

6. The creep rupture tester loading mechanism according to claim 3, wherein a sealing ring (106) is installed at the joint of the ball screw (202) and the bottom of the box body (101);

a top washer (105) is mounted at the joint of the ball screw (202) and the top of the upper end cover, and the top washer (105) is fixedly assembled with the upper end cover through a bolt (10);

the upper end of the ball screw (202) is configured as a positioning connection end connected with an external host machine table;

and an anti-rotation component (4) is integrated at the lower end of the ball screw (202).

7. The creep-endurance testing machine loading mechanism according to claim 6, wherein the anti-rotation assembly (4) comprises:

a fixing plate (404) which is fixedly assembled with the box body (101) through a bolt (10);

a bearing guide plate (402) which is fixedly assembled with the fixing plate (404) and extends downwards along the vertical direction; and

the supporting plate (401) is fixedly connected with the lower end of the ball screw (202) at one end and is in sliding connection with the bearing guide plate (402) at the other end;

the supporting plate bearing (406) is installed at one end, matched with the bearing guide plate (402), of the supporting plate (401), a guide groove (403) is formed in the bearing guide plate (402) along the length direction of the bearing guide plate, and the supporting plate bearing (406) slides in the guide groove (403).

8. The creep rupture tester loading mechanism according to claim 7, characterized in that a bottom washer (405) is installed at the joint of the supporting plate (401) and the ball screw (202), and the bottom washer (405) is assembled and fixed with the ball screw (202) through a bolt (10);

one end, far away from the ball screw (202), of the supporting plate (401) is connected with the supporting plate bearing (406) through a shaft (408), and a bearing gasket (407) is arranged at the joint of the shaft (408) and the supporting plate bearing (406).