CN210426940U - Test chassis and test device provided with same - Google Patents

Abstract

The utility model provides a test chassis and be provided with test device on this chassis, wherein, test chassis includes vertical position adjustment mechanism, horizontal position adjustment mechanism and tilting mechanism, vertical position adjustment mechanism includes elevation structure and lift axle, elevation structure with the lift axle is connected, the lift axle passes through the axle bed and sets up on the rack, and with the axle bed carries out the swing joint that can rise or descend, horizontal position adjustment mechanism activity set up in on the shaft shoulder of lift axle, and can follow the lift axle rises or descends together, tilting mechanism includes swivel mount and mounting flange, the swivel mount includes rotating head and swinging boom, the rotating head set up in on the horizontal position adjustment mechanism, the swinging boom with mounting flange swing joint. This experimental chassis can overturn so that the installation of test piece, can carry out the adjustment on height and the horizontal angle, has promoted the operation convenience, still can realize the accurate location on experimental chassis.

Description

Test chassis and test device provided with same

Technical Field

The utility model relates to a break through the test equipment field, especially relate to a test chassis and be provided with test device on this chassis.

Background

At present, for some protective covers used in the fields of ships, aerospace and the like, a sample cover needs to be subjected to a burst test in the actual production process, burst test equipment is generally a specially customized large-scale test bed, and a series of impact tests need to be performed on covers with different dimensions and test parameters. Therefore, the test chassis for installing, replacing and positioning the test pieces such as the cover body is designed conveniently, stably, accurately and efficiently, and the high efficiency of the test and the accuracy of the result can be effectively guaranteed.

In the prior art, a slide rail type test chassis and a screw rod type test chassis are generally adopted. The sliding rail type test bench comprises a slidable chassis, a linear guide rail, a sliding block and other basic structures, wherein before a test, the cover body is arranged on the chassis in an upward mode and then pushed into a test position; the lead screw formula is including fixing the lead screw in the test bench outside, the chassis passes through the screw thread and installs on the lead screw, drive chassis screw in test bench through the rotating lead screw, this kind of mode is in the cantilever state because the chassis is for the lead screw center, frictional force between lead screw and the nut is great, therefore the operation is very hard during manpower rotating lead screw, even if adopt the drive mode, also can produce great energy consumption and wearing and tearing, and, because there is the clearance between lead screw and the nut, lead to the chassis to present the slope of "hanging head" formula easily, be difficult to keep the level, and the slope state becomes more and more serious along with the wearing and tearing of screw thread, finally the mounted position that leads to required bursting test and lid does not correspond, seriously influence test condition and effect.

In addition, at present, for whether the chassis is in the test center, a positioning mode of aligning and connecting by manual marking marks or pin holes is generally adopted. The positioning of the manual marking mark has the defects that the positioning accuracy is relatively dependent on the observation accuracy of naked eyes of an operator, so that the positioning accuracy is not high; the pin hole positioning has the defects that the relative positions of the parts need to be aligned in a manual mode, and in the positioning process, the sight line is shielded in the parts, so that the operation is inconvenient.

Therefore, effective innovation is needed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an experimental chassis and be provided with the test device on this chassis, this experimental chassis can overturn so that the installation of test piece, can carry out the adjustment on height and the horizontal angle, has promoted the operation convenience, still can realize the accurate location on experimental chassis, has improved experimental accuracy.

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

a test chassis comprises a vertical position adjusting mechanism, a horizontal position adjusting mechanism and a turnover mechanism, wherein the vertical position adjusting mechanism comprises a lifting structure and a lifting shaft, the lifting structure is connected with the lifting shaft, the lifting shaft is arranged on a rack through a shaft seat and movably connected with the shaft seat in a lifting or descending manner, the horizontal position adjusting mechanism is movably arranged on a shaft shoulder of the lifting shaft and can ascend or descend along with the lifting shaft, the turnover mechanism comprises a rotating frame and a mounting flange, the rotating frame comprises a rotating head and a rotating arm, the rotating head is arranged on the horizontal position adjusting mechanism, and the rotating arm is movably connected with the mounting flange;

correspondingly, the shaft seat comprises an upper shaft seat and a lower shaft seat, copper sleeves are arranged on the inner sides of the upper shaft seat and the lower shaft seat, the installation and movement stability of the lifting shaft is improved through the upper shaft seat and the lower shaft seat, and the copper sleeves can further provide guidance for the lifting shaft to ascend or descend;

correspondingly, the lifting structure comprises a speed reducing motor, a transmission shaft, a gear and a rack, the speed reducing motor is in driving connection with the transmission shaft, the transmission shaft is connected with the gear through a flat key, the gear is in meshing transmission connection with the rack, the rack is fixedly arranged on the lifting shaft, and the lifting shaft is lifted or lowered through the meshing transmission of the rack and the gear;

correspondingly, the vertical position adjusting mechanism further comprises a controller and a limit switch, the limit switch is arranged on the rack and electrically connected with the controller, the controller is electrically connected with the speed reducing motor, and the lifting stroke of the vertical position adjusting mechanism is controlled through the limit switch;

correspondingly, the horizontal position adjusting mechanism comprises a roller bearing, an adjusting washer and a locking nut, an upper roller bearing and a lower roller bearing are arranged on the lifting shaft at intervals, the locking nuts are respectively arranged on the upper side of the roller bearing above and the lower side of the roller bearing below, the adjusting washer is arranged between the locking nut and the roller bearing, the roller bearing is axially positioned through the locking nut, and the limiting accuracy of the locking nut on the roller bearing is improved through the adjusting washer;

correspondingly, the rotating head is of an annular structure, a radially raised retaining shoulder is arranged in the middle of the inner annular side of the rotating head, bearing mounting holes are respectively formed in the inner annular sides of the rotating head above and below the retaining shoulder, the bearing mounting holes are used for accommodating outer rings of roller bearings, and the retaining shoulder is clamped into the space between the two roller bearings, so that on one hand, the retaining shoulder can ensure that the rotating head cannot slide off the roller bearings, and on the other hand, the retaining shoulder can also be matched with a locking nut to axially position the roller bearings;

correspondingly, the tail end of the rotating arm is rotatably connected with the mounting flange through a pin hole and a pin shaft;

correspondingly, a plurality of mounting holes are formed in the mounting flange and used for mounting a test piece;

correspondingly, the rotating arm and the rack are correspondingly provided with an upper positioning block and a lower positioning block, the lower positioning block is provided with a notch, the notch is of a Y-shaped structure, the upper part of the Y-shaped structure is a guide port, the lower part of the Y-shaped structure is a positioning groove, preferably, the width of the positioning groove is equal to that of the upper positioning block, and the flaring structure of the guide port is convenient for guiding the upper positioning block into the positioning groove, so that the positioning of the rotating frame is realized;

correspondingly, the rotating arm is also provided with a stop block, and the stop block can prevent the mounting flange from being turned over by mistake;

correspondingly, the test chassis further comprises a limiting block, the limiting block is arranged on the rack, is positioned on one side of the rotating frame and is used for limiting the limit position of the rotating frame when the rotating frame is screwed in;

correspondingly, the limiting block is provided with a buffer rubber pad, and after the limiting block and the rotating frame are in limiting collision, the collision between the limiting block and the rotating frame is buffered.

A test device with the chassis comprises a rack, two layers of columns, linear guide rails, buffers, lifting eye screws, an electric hoist, electromagnetic chucks and punch assemblies, wherein the rack is provided with the columns, the linear guide rails and the buffers on the upper layer of the rack;

correspondingly, the drift subassembly includes slider, weight chassis, counter weight, connecting rod, drift and force sensor, the weight chassis passes through slider slidable set up in on the linear guide, in set up on the weight chassis the counter weight, weight chassis downside sets up the connecting rod, the connecting rod lower extreme sets up the drift, in the inside setting of drift force sensor.

The utility model has the advantages that:

1) the height and the horizontal position of the test chassis are adjusted by arranging the vertical position adjusting mechanism and the horizontal position adjusting mechanism, on one hand, the labor cost is greatly reduced, and the degree of mechanization and the test efficiency are improved, on the other hand, the rotating frame is arranged on the roller bearing and rotates by virtue of the roller bearing, so that the rotating frame can be rotated to the outside of the rack to mount a test piece, the operation safety of an operator is ensured, the problem of 'head drop' caused by the fact that the rotating frame is in a cantilever state due to the fact that the rotating frame deviates from the center of the screw rod is solved, and the precision of the rotating frame when the rotating frame is screwed into a test position is greatly improved;

2) the mounting flange is rotatably connected with the rotating frame through the pin shaft, the forward mounting of the test piece can be realized through rotating the mounting flange, the test piece is mounted on the lower side of the mounting flange without the need of leaning over and looking backwards by operators, and the convenience and the efficiency of operation are improved;

3) by arranging the upper positioning block and the lower positioning block, the rotating frame is ensured to rotate to an accurate test position, and the test accuracy is ensured;

4) the lifting stroke and the horizontal rotation stroke of the rotating frame are limited through the limit switch and the limit block respectively, and collision and damage caused by lifting or excessive rotation between parts are avoided.

Drawings

Fig. 1 is a schematic structural diagram of a test chassis according to an embodiment of the present invention;

fig. 2 is a schematic view of an installation structure of a test chassis according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an upper positioning block and a lower positioning block according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a testing apparatus provided with the chassis according to an embodiment of the present invention;

in the figure:

101. an upper shaft seat; 102. a lower shaft seat;

201. a limit switch; 202. a reduction motor; 203. a motor bracket; 204. a drive shaft, 205, a gear; 206. a rack; 207. a lifting shaft;

301. a roller bearing; 302. an adjusting washer; 303. locking the nut;

401. rotating the head; 402. a shoulder block; 403. a rotating arm; 404. a pin shaft; 405. a stopper; 406. an upper positioning block; 407. a lower positioning block; 408. a limiting block;

501. installing a flange; 502. mounting holes;

601. a rack; 602. a column; 603. a linear guide rail; 604. a buffer; 605. a lifting eye screw; 606. An electric hoist; 607. an electromagnetic chuck; 608. a slider; 609. a weight chassis; 610. counterweight weights; 611. A connecting rod; 612. a punch;

701. a cover body.

Detailed Description

As shown in fig. 1 and 2, in one embodiment of the present invention, a test chassis includes a vertical position adjusting mechanism, a horizontal position adjusting mechanism, and a turnover mechanism;

the vertical position adjusting mechanism comprises a limit switch 201, a controller, a lifting structure and a lifting shaft 207, the lifting structure further comprises a speed reducing motor 202, a transmission shaft 204, a gear 205 and a rack 206, the limit switch 201 is arranged on the rack 601, the limit switch 201, the controller and the speed reducing motor 202 are sequentially and electrically connected, the speed reducing motor 202 is fixedly installed through a motor support 203, the speed reducing motor 202 is in driving connection with the transmission shaft 204, the transmission shaft 204 is connected with the gear 205 through a flat key, the gear 205 is in meshing transmission connection with the rack 206, the rack 206 is fixedly arranged on the lifting shaft 207, through the meshing transmission of the rack 206 and the gear 205, the lifting or descending movement of the lifting shaft 207 is realized, and the lifting stroke of the lifting shaft 207 is controlled through the limit switch 201. The lifting shaft 207 is arranged on the rack 601 through a shaft seat, and is movably connected with the shaft seat in a lifting or descending manner, the shaft seat comprises an upper shaft seat 101 and a lower shaft seat 102, copper sleeves are arranged on the inner sides of the upper shaft seat 101 and the lower shaft seat 102, the mounting stability of the lifting shaft 207 is improved through the upper shaft seat 101 and the lower shaft seat 102, and the copper sleeves can further provide guidance for the lifting or descending of the lifting shaft 207;

the horizontal position adjusting mechanism comprises a roller bearing 301, an adjusting washer 302 and a locking nut 303, an upper roller bearing 301 and a lower roller bearing 301 are arranged on the lifting shaft 207 at intervals, the locking nut 303 is arranged on the upper side of the roller bearing 301 above and on the lower side of the roller bearing 301 below respectively, the adjusting washer 302 is arranged between the locking nut 303 and the roller bearing 301, the roller bearing 301 is axially positioned through the locking nut 303, and the limiting accuracy of the locking nut 303 on the roller bearing 301 is improved through the adjusting washer 302;

tilting mechanism includes swivel mount and mounting flange 501, and the swivel mount includes rotating head 401, swinging boom 403 and dog 405, and rotating head 401 is the loop configuration, sets up radial bellied fender shoulder 402 in the inboard middle part of the annular of rotating head 401, and the annular inboard that is located rotating head 401 of keeping off shoulder 402 top and below sets up the bearing mounting hole respectively, and the bearing mounting hole is used for holding the outer lane that sets up roller bearing 301, keeps off in shoulder 402 card income two roller bearing 301's interval. The tail end of the rotating arm 403 is rotatably connected with the mounting flange 501 through the pin hole and the pin shaft 404, the reversible state of the mounting flange 501 is controlled through the angle of the rotating stop block 405, when the stop block 405 is stopped on the mounting flange 501, the mounting flange 501 can be prevented from being turned over by mistake, and when the stop block 405 is screwed out of the mounting flange 501, the mounting flange 501 can be rotated freely. The mounting flange 501 is provided with a plurality of mounting holes 502 for mounting a test piece, and for convenience of description, in this embodiment, the test piece is provided as a cover 701;

in order to accurately send the cover body 701 to the center of the burst test, as shown in fig. 3, an upper positioning block 406 and a lower positioning block 407 are correspondingly disposed on the rotating arm and the rack 601, for example, the upper positioning block 406 may be a protrusion disposed on the lower side of the rotating frame, a Y-shaped notch is disposed on the lower positioning block 407, the upper portion of the Y-shape is a guide opening, the lower portion of the Y-shape is a positioning groove, and a flaring structure of the guide opening facilitates guiding the upper positioning block 406 into the positioning groove, so as to improve the guiding and positioning effect. In addition, in order to limit the limit position of the rotating frame when the rotating frame is screwed in, a limit block 408 is further arranged on the rack 601, the limit block 408 is positioned at one side of the rotating frame, and further, a buffer rubber pad can be further arranged on the limit block 408, so that the limit collision between the limit block 408 and the rotating frame is buffered after the limit collision occurs.

As shown in fig. 4, the testing apparatus provided with the chassis comprises, in addition to the aforementioned testing chassis, a rack 601, a column 602, a linear guide 603, a buffer 604, an eye screw 605, an electric block 606, an electromagnetic chuck 607 and a punch assembly, wherein the punch assembly further comprises a slide block 608, a weight chassis 609, a counterweight 610, a connecting rod 611, a punch 612 and a force sensor. The rack 601 is provided with two layers, a vertical column 602, a linear guide rail 603 and a buffer 604 are arranged on the upper layer of the rack 601, the linear guide rail 603 is arranged at the center of the vertical column 602, a plurality of buffers 604 are uniformly arranged around the linear guide rail 603 and between the vertical column 602 and the linear guide rail 603, an upper beam is arranged at the upper end of the vertical column 602, a lifting bolt 605 is arranged at the center of the upper beam, an electric hoist 606 is suspended below the lifting bolt 605, an electromagnetic chuck 607 is arranged below the electric hoist 606, a counterweight 610 is arranged below the electromagnetic chuck 607, the counterweight 610 is arranged on a counterweight chassis 609, the counterweight chassis 609 is slidably arranged on the linear guide rail 603 through a sliding block 608, a connecting rod 611 is arranged at the lower side of the counterweight chassis 609, a punch 612 is arranged at the lower end of the connecting rod 611, a force sensor is arranged.

According to one embodiment, the following implementation can be obtained:

firstly, the cover body is assembled or replaced on the test chassis

The device is positioned at the test position shown in fig. 1 → the speed reducing motor 202 drives the rotating frame to ascend to a preset position → the rotating frame is manually dragged to be outwards screwed out of the rack 601 around the lifting shaft 207 → the locking state of the stop block 405 to the mounting flange 501 is released and the mounting flange 501 is rotated 180 degrees → the speed reducing motor 202 drives the rotating frame to descend and is parked on a specific height or a supporting column → the cover body 701 is installed on the mounting flange 501 → the speed reducing motor 202 drives the rotating frame to ascend to the preset position → the mounting flange 501 is rotated 180 degrees and is locked by the stop block 405 → the rotating frame is manually pushed to be inwards screwed into the rack 601 around the lifting shaft 207 until the cover body hits on the stop block 408 → the speed reducing motor 202 drives the rotating frame to descend and is corrected and limited by the matching of the upper positioning block 406 and the lower.

Second, test flow of test device

The electric hoist 606 drives the electromagnetic chuck 607 to adsorb the punch assembly to rise to a designated height, the electromagnetic chuck 607 charges and demagnetizes, the punch assembly is released to freely fall along the linear guide rail 603, the cover body 701 arranged below is broken, the force sensor arranged inside the punch 612 measures the impact force between the punch 612 and the cover body 701, and after the breaking action is completed, the punch assembly falls on the buffer 604 to buffer until the punch assembly stops moving.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The utility model provides an experimental chassis, includes vertical position adjustment mechanism, horizontal position adjustment mechanism and tilting mechanism, its characterized in that: the vertical position adjusting mechanism comprises a lifting structure and a lifting shaft, the lifting structure is connected with the lifting shaft, the lifting shaft is arranged on the rack through a shaft seat and movably connected with the shaft seat in a lifting or descending mode, the horizontal position adjusting mechanism is movably arranged on a shaft shoulder of the lifting shaft and can ascend or descend along with the lifting shaft, the turnover mechanism comprises a rotating frame and a mounting flange, the rotating frame comprises a rotating head and a rotating arm, the rotating head is arranged on the horizontal position adjusting mechanism, and the rotating arm is movably connected with the mounting flange.

2. A test chassis according to claim 1, wherein: the shaft seat comprises an upper shaft seat and a lower shaft seat, and copper sleeves are arranged on the inner sides of the upper shaft seat and the lower shaft seat.

3. A test chassis according to claim 1, wherein: the lifting structure comprises a speed reducing motor, a transmission shaft, a gear and a rack, the speed reducing motor is in driving connection with the transmission shaft, the transmission shaft is connected with the gear through a flat key, the gear is in meshing transmission connection with the rack, and the rack is fixedly arranged on the lifting shaft.

4. A test chassis according to claim 1, wherein: the vertical position adjusting mechanism further comprises a controller and a limit switch, the limit switch is arranged on the rack and electrically connected with the controller, the controller is electrically connected with the speed reducing motor, and the vertical position adjusting mechanism is controlled to lift through the limit switch.

5. A test chassis according to claim 1, wherein: the horizontal position adjusting mechanism comprises roller bearings, adjusting washers and locking nuts, an upper roller bearing and a lower roller bearing are arranged on the lifting shaft at intervals, the locking nuts are arranged on the upper sides of the roller bearings above and the lower sides of the roller bearings below, and the adjusting washers are arranged between the locking nuts and the roller bearings.

6. A test chassis according to claim 1, wherein: the rotary head is of an annular structure, a radially raised retaining shoulder is arranged in the middle of the inner side of the annular of the rotary head, and bearing mounting holes are formed in the inner side of the annular of the rotary head and located above and below the retaining shoulder.

7. A test chassis according to claim 1, wherein: the rotary arm and the rack are correspondingly provided with an upper positioning block and a lower positioning block, a notch is arranged on the lower positioning block and is of a Y-shaped structure, the upper part of the Y-shaped structure is a guide opening, and the lower part of the Y-shaped structure is a positioning groove.

8. A test chassis according to claim 1, wherein: the rotating arm is also provided with a stop block.

9. A test chassis according to claim 1, wherein: the test chassis further comprises a limiting block, the limiting block is arranged on the rack and located on one side of the rotating frame, and a buffer rubber pad is arranged on the limiting block.

10. A test rig provided with a test chassis according to any of claims 1-9, characterized in that: except that including the foregoing experimental chassis, still include rack, stand, linear guide, buffer, eyebolt, electric block, electromagnet and drift subassembly, the rack is provided with two-layerly, the upper strata of rack sets up stand, linear guide and buffer, in the stand center sets up linear guide, centers on linear guide just is located the stand with the equipartition sets up a plurality of between the linear guide the buffer, the stand upper end is provided with the upper beam, in the upper beam central point puts and sets up eyebolt, in the eyebolt below hangs electric block, in the electric block below sets up electromagnet, in the electromagnet below sets up drift subassembly, the lower floor of rack is used for holding experimental chassis.

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