CN214668219U - Strain type unconfined pressure tester - Google Patents

Abstract

The utility model relates to a strain type does not have lateral limit pressure test appearance, which comprises a frame, the frame upper end is equipped with the dynamometry ring, be equipped with the percentage table in the dynamometry ring, tip is contradicted with the dynamometry ring under the percentage table, tip is equipped with spacing platform under the dynamometry ring, tip is equipped with down spacing platform under the frame, the tip has set firmly the rack under the lower spacing platform, rack and frame sliding connection, tip is equipped with the axis of rotation under the frame, the intermediate position of axis of rotation has set firmly the first gear with the rack adaptation, the frame rotates and is connected with the face gear, the coaxial fixedly connected with driving motor of face gear, the axis of rotation sets firmly two second gears with face gear adaptation. The driving motor drives the face gear to rotate, and the rotating shaft can drive the rotating shaft to rotate forwards and backwards when the rotating shaft moves along the self axial direction to the two second gears to be respectively meshed with the two sides of the face gear. This application driving motor unidirectional rotation can control the feeding and the uninstallation to the sample, need not frequent just reversal, has prolonged life's effect.

Description

Strain type unconfined pressure tester

Technical Field

The application relates to the field of unconfined pressure detection equipment, in particular to a strain type unconfined pressure tester.

Background

In road construction, the pressure value that can bear when the clay bears axial pressure to the sample damage under the unrestricted condition of side direction needs to be tested for try to obtain the unconfined compressive strength of clay. The force measuring ring is a force measuring device with an elastic body being a circular ring or an elliptical ring, and the pressure value is generally measured by the force measuring ring at present.

The related art can refer to Chinese patent with publication number CN206038448U and discloses a strain control type unconfined compressive strength test device, which comprises a case internally provided with a motor and a gear, wherein an output shaft of the motor is rotationally connected with a lifting screw rod through the gear, and a lifting controller is connected with the motor through a lead and is used for controlling the automatic lifting of the lifting screw rod; the top of the lifting screw is fixedly connected with the lower bottom surface of the pressurizing plate; two ends of the upper surface of the case are respectively and vertically provided with a supporting rod, a top bearing platform is arranged between the upper parts of the two supporting rods, the lower bottom surface of the top bearing platform is connected with the top end of a pressure sensor, the bottom end of the pressure sensor is connected with the upper surface of an upper bearing plate, and the upper bearing plate is positioned at the upper end of a sample; the pressure sensor is connected with the dynamometer through a lead, and the dynamometer is connected with the data acquisition end through a lead.

Aiming at the related technologies, the inventor thinks that the experimental device needs to control the driving motor to start and stop and rotate forward and backward for many times in the process of replacing the sample to be tested after the experiment is finished so as to realize the feeding and the unloading of the sample, so that the abrasion of a motor bearing is easily increased, the aging of a coil is accelerated, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

In order to prolong service life, the application provides a strain type unconfined pressure tester.

The application provides a strain type unconfined pressure tester, adopts following technical scheme:

the utility model provides a strain type does not have lateral limit pressure test appearance, which comprises a frame, the frame upper end is equipped with the dynamometry ring, be equipped with the percentage table in the dynamometry ring, tip and dynamometry ring are contradicted under the percentage table, tip is equipped with spacing platform under the dynamometry ring, tip is equipped with down spacing platform under the frame, the tip has set firmly the rack under the spacing platform, rack and frame sliding connection, tip is equipped with the axis of rotation under the frame, the intermediate position of axis of rotation has set firmly the first gear with the rack adaptation, the frame rotates and is connected with face gear, the coaxial fixedly connected with driving motor of face gear, the axis of rotation sets firmly two second gears with face gear adaptation.

Through adopting above-mentioned technical scheme, the user arranges the sample in between upper limit station and the lower limit station, and driving motor drives face gear and rotates, and when the axis of rotation moved to two second gears meshing respectively with the both sides of face gear along self axial, can drive the positive and negative rotation of axis of rotation, and then moved about through first gear drive rack and lower limit station, realized that driving motor unidirectional rotation can control feeding and uninstallation to the sample, be favorable to increase of service life.

Optionally, the first gear is longer in length.

Through adopting above-mentioned technical scheme, when two second gears mesh with the face gear respectively, the rack all contacts with first gear all the time along width direction's both ends, is favorable to reducing wear, and then increase of service life.

Optionally, a safety cover is fixedly arranged at the lower end of the rack, and the rack, the first gear, the second gear and the face gear are all located in the safety cover.

Through adopting above-mentioned technical scheme, the safety guard is to first gear, second gear and face gear protection, and impurity such as hack is difficult for falling into the safety guard and influences the transmission, is favorable to increase of service life.

Optionally, safety guard sliding connection has the adjusting lever, adjusting lever and axis of rotation parallel arrangement, and the adjusting lever has set firmly the fixture block of two parallels, and the fixture block all rotates with the axis of rotation to be connected, and the adjusting lever rotates and is connected with the gag lever post, and the bar hole has been seted up to the safety guard, and the bar hole level sets up, and bar hole intercommunication has two spacing holes with the gag lever post adaptation.

By adopting the technical scheme, a user can clamp the limiting rod into different limiting holes, the rotating shaft can be limited by the adjusting rod and the clamping block, the rotating shaft is not easy to accidentally move along the self axial direction during rotation, and the abrasion is reduced, so that the service life is prolonged.

Optionally, a hand wheel is fixedly arranged at one end of the rotating shaft along the length direction.

Through adopting above-mentioned technical scheme, user's accessible hand wheel control axis of rotation rotates, is convenient for zero setting, simple structure convenient operation to the percentage table.

Optionally, lower spacing platform rotates and is connected with two-way lead screw, and the equal threaded connection in both ends of two-way lead screw has the limiting plate, and spacing platform has set firmly the guide bar parallel with two-way lead screw, and two limiting plates all with guide bar sliding connection.

Through adopting above-mentioned technical scheme, two-way lead screw rotates, drives two limiting plates and moves in opposite directions or dorsad in step under the spacing of guide bar, is convenient for fix a position the sample, is favorable to improving experimental precision.

Optionally, the frame has set firmly two vertical support columns, and the frame upper end is equipped with the backup pad, and the support column upper end all has set firmly the threaded rod, two threaded rods all with backup pad sliding connection, the equal threaded connection of threaded rod has two spacing bolts, percentage table and backup pad fixed connection.

Through adopting above-mentioned technical scheme, the user rotates the height that spacing bolt can adjust the backup pad and then adjust the height of dynamometry ring and percentage table, can measure the longer sample of length, has improved the suitability.

Optionally, the force measuring ring is in threaded connection with the support plate, and the upper limiting table is in threaded connection with the force measuring ring.

Through adopting above-mentioned technical scheme, the user can dismantle the dynamometry ring of changing equidimension not, and then has improved the suitability of tester.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the face gear and the second gears, a user places a sample between the upper limit table and the lower limit table, the driving motor drives the face gear to rotate, and the rotating shaft moves along the self axial direction until the two second gears are respectively meshed with two sides of the face gear, so that the rotating shaft can be driven to rotate in the positive and negative directions, the rack and the lower limit table are driven to move up and down through the first gear, the feeding and unloading of the sample can be controlled by the unidirectional rotation of the driving motor, and the service life is prolonged;

2. through the arrangement of the safety cover, the first gear, the second gear and the face gear are protected by the safety cover, impurities such as soil fragments and the like are not easy to fall into the safety cover to influence transmission, and the service life is prolonged;

3. through setting up gag lever post and spacing hole, the user blocks the gag lever post in different spacing downtheholely, can carry out spacingly to the axis of rotation through adjusting lever and fixture block, is difficult for unexpected along self axial displacement in the axis of rotation, is favorable to reducing wearing and tearing increase of service life.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a strain type unconfined pressure tester.

Fig. 2 is a schematic view of the internal structure of the safety cover.

Description of reference numerals: 1. a frame; 2. a force measuring ring; 21. a dial indicator; 3. an upper limit table; 4. a lower limit table; 41. a rack; 42. a support shaft; 5. a rotating shaft; 51. a first gear; 52. a second gear; 6. a drive motor; 61. a face gear; 11. a safety shield; 7. an adjusting lever; 71. a clamping block; 72. a limiting rod; 111. a strip-shaped hole; 112. a limiting hole; 53. a hand wheel; 8. a bidirectional lead screw; 81. a limiting plate; 82. a guide bar; 12. a support pillar; 13. a support plate; 14. a threaded rod; 9. and a limiting bolt.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a strain type unconfined pressure tester.

Referring to fig. 1, a strain type unconfined pressure tester comprises a frame 1, wherein the frame 1 is made of solid metal and has a long service life; the upper end of the rack 1 is provided with a force measuring ring 2, a dial indicator 21 is arranged in the force measuring ring 2, the lower end of the force measuring ring 2 is provided with an upper limit platform 3, the lower side of the upper limit platform 3 is provided with a lower limit platform 4, the upper limit platform 3 and the lower limit platform 4 are positioned on the same straight line in the vertical direction, a user places a sample on the lower limit platform 4 during testing, controls the lower limit platform 4 to move upwards, and performs axial extrusion on the sample by matching with the upper limit platform 3, reads the numerical value of the dial indicator 21, and performs a non-lateral limit pressure test.

Referring to fig. 1, frame 1 includes the base, and the user arranges the base in the plane and supports frame 1 wholly, and base fixed mounting has two vertical support columns 12, and two support columns 12 are located the both sides of base edge width direction respectively, and backup pad 13 is installed to 1 upper end of frame, and backup pad 13 level sets up, and support column 12 upper end has all set firmly threaded rod 14, and backup pad 13 sets up two through-holes with 14 adaptations of threaded rod, and two threaded rod 14 pass two through-holes respectively and extend to backup pad 13 upper end.

Referring to fig. 1, two threaded rods 14 are both slidably connected with a support plate 13, a user manually adjusts the support plate 13 to a proper height, the threaded rods 14 are both in threaded connection with two limiting bolts 9, the two limiting bolts 9 are respectively positioned at the upper side and the lower side of the support plate 13, and the user screws the limiting bolts 9 to be abutted against the upper end face and the lower end face of the support plate 13, so as to fix the position of the support plate 13 in the vertical direction; the lower tip fixed mounting has the connecting plate under backup pad 13, and percentage table 21 and the lower tip fixed connection of connecting plate further make backup pad 13 fixed back, the difficult emergence of distance from the base of percentage table 21 changes.

Referring to fig. 1, a vertical first threaded shaft is fixedly installed in the middle of the lower end of a supporting plate 13, a first threaded hole matched with the first threaded shaft is formed in the upper end of a force measuring ring 2, a user manually inserts the first threaded shaft into the first threaded hole, then the force measuring ring 2 is screwed, the force measuring ring 2 is fixed on the supporting plate 13, the lower end of a dial indicator 21 is abutted against the force measuring ring 2, and when the force measuring ring 2 deforms, a contact of the dial indicator 21 is jacked to drive a pointer of the dial indicator 21 to rotate.

Referring to fig. 1, tip fixed mounting and second threaded shaft under the force measuring ring 2, go up spacing platform 3 and offer the second screw hole with second threaded shaft adaptation, the user injects the second threaded shaft in the second threaded hole, then rotates and goes up spacing platform 3, and then fixes spacing platform 3 on force measuring ring 2, and the spacing of spacing platform 3 and base is unchangeable all the time before the test.

Referring to fig. 1, the user is manual to arrange columniform sample in down on spacing platform 4, and spacing platform 4 rotates down and is connected with two-way lead screw 8, and two-way lead screw 8 has the handle along length direction's one end fixed mounting, and the manual turning handle of user can drive two-way lead screw 8 and rotate, and spacing platform 4 and equal threaded connection have limiting plate 81 down are extended at two-way lead screw 8's both ends, and the screw thread at two-way lead screw 8 both ends sets up in the reverse direction.

Referring to fig. 1, limiting table fixed mounting has guide bar 82, guide bar 82 is located two-way lead screw 8 below and is parallel with two-way lead screw 8, tip all with guide bar 82 sliding connection under two limiting plate 81, limiting plate 81 can not take place to rotate along two-way lead screw 8 under the limiting displacement of guide bar 82, and then realize that two-way lead screw 8 rotate and drive two limiting plate 81 and be close to the removal each other, two limiting plate 81 all are the arc, promote the sample from the sample both sides to 4 intermediate positions of limiting table.

Referring to fig. 1, after a sample is clamped by two limiting plates 81, the central axis of the sample coincides with the central axes of the lower limiting table 4 and the upper limiting table 3, and the stress point of the sample is not easy to deviate from the central position of the sample, which is beneficial to improving the detection precision; at this moment, the control handle of the user rotates reversely, and the two limiting plates 81 are driven by the bidirectional screw 8 to move reversely to be separated from the position between the upper limiting table 3 and the lower limiting table 4.

Referring to fig. 1 and 2, a supporting shaft 42 is fixedly installed at the lower end of the lower limiting table 4, a vertical rack 41 is fixedly installed on the supporting shaft 42, a safety cover 11 is fixedly installed on the base, the lower ends of the supporting shaft 42 and the rack 41 extend into the safety cover 11, a rotating shaft 5 is rotatably connected in the safety cover 11, one end of the rotating shaft 5 in the length direction extends out of the safety cover 11 and is fixedly installed with a hand wheel 53, and a user manually rotates the hand wheel 53 to drive the rotating shaft 5 to rotate.

Referring to fig. 1 and 2, a first gear 51 is fixedly mounted at the middle position of the rotating shaft 5 along the length direction, the first gear 51 rotates along with the rotating shaft 5 synchronously, the rack 41 is meshed with the first gear 51, the supporting shaft 42 is connected with the rack 1 in a sliding manner, the supporting shaft 42 is driven to slide along the vertical direction, the distance between the upper limiting table 3 and the lower limiting table 4 is adjusted, the upper end and the lower end of a sample are tightly propped against the upper limiting table 3 and the lower limiting table 4 respectively, when the pointer of the dial indicator 21 is about to rotate, the hand wheel 53 is stopped to rotate by a user, and the dial indicator 21 is zeroed manually by the user at the moment.

Referring to fig. 1 and 2, 11 sliding connection of safety guard has adjusting lever 7, adjusting lever 7 and 5 parallel arrangement of axis of rotation, gag lever post 72 is installed to adjusting lever 7, gag lever post 72 along vertical direction with 7 rotation of adjusting lever be connected and with adjusting lever 7 mutually perpendicular, safety guard 11 sets up horizontally bar hole 111, gag lever post 72 extends outside safety guard 11 through bar hole 111, user manual control gag lever post 72 slides in bar hole 111, can drive adjusting lever 7 along self axial slip.

Referring to fig. 1 and 2, two parallel fixture blocks 71 are fixedly mounted on the adjusting rod 7, a clamping groove matched with the fixture block 71 is formed in the rotating shaft 5, the fixture blocks 71 correspond to the clamping grooves one by one, the two fixture blocks 71 are respectively clamped into the corresponding clamping grooves, when the adjusting rod 7 slides, the rotating shaft 5 is driven to move along the self axial direction, the driving motor 6 horizontally arranged is fixedly mounted at the lower end of the rack 1, an output shaft of the driving motor 6 extends into the safety cover 11, a face gear 61 is fixedly mounted on the output shaft of the driving motor, a user starts the driving motor 6, and the face gear 61 is driven to rotate.

Referring to fig. 1 and 2, the output shaft of the driving motor 6 and the rotating shaft 5 are located at the same height, the rotating shaft 5 is fixedly provided with two second gears 52 matched with the face gear 61, the two second gears 52 are respectively located at two sides of the first gear 51, the distance between the two second gears 52 is smaller than the diameter of the face gear 61, when the rotating shaft 5 moves to a position where one of the second gears 52 is meshed with the face gear 61, the face gear 61 drives the rotating shaft 5 to rotate through the corresponding second gear 52, the fixture block 71 is rotatably connected with the rotating shaft 5 through the clamping groove, the length of the first gear 51 is longer, at this time, the first gear 51 is still meshed with the rack 41, and then the rack 41 drives the supporting shaft 42 and the lower limiting table 4 to ascend, so as to test sample feeding.

Referring to fig. 1 and 2, the strip-shaped hole 111 is communicated with two limit holes 112 adapted to the limit rod 72, and a user controls the limit rod 72 to be clamped into the corresponding limit hole 112 in the rotation process of the rotating shaft 5, so that the rotating shaft 5 is not easy to move axially and is less worn; after the sample is broken, the user manually rotates the limiting rod 72 out of the corresponding limiting hole 112, then controls the limiting rod 72 to move towards the other end of the strip-shaped hole 111, the adjusting rod 7 and the fixture block 71 drive the rotating shaft 5 to move along the self axial direction, when the other second gear 52 is meshed with the face gear 61, the user clamps the limiting rod 72 into the other limiting hole 112, at the moment, the face gear 61 rotates, the rotating shaft 5 is driven to rotate reversely by the second gear 52, and then the rack 41 is driven to move downwards by the first gear 51, so that the lower limiting table 4 descends, the next test is ready to be carried out, the lower limiting table 4 can be controlled to ascend and descend by the unidirectional rotation of the driving motor 6, the driving motor 6 does not need to rotate forwards and backwards frequently, and the service life is prolonged.

The implementation principle of a strain type unconfined pressure tester in the embodiment of the application is as follows: a user starts the driving motor 6 to drive the face gear 61 to rotate, the manual control limiting rod 72 slides in the strip-shaped hole 111 to drive the adjusting rod 7 to slide along the self axial direction, and further drive the rotating shaft 5 to move along the self axial direction, when the rotating shaft 5 moves until one of the second gears 52 is meshed with the face gear 61, the face gear 61 drives the rotating shaft 5 to rotate through the corresponding second gear 52, the fixture block 71 is rotationally connected with the rotating shaft 5 through the clamping groove, the first gear 51 is long, at the moment, the first gear 51 is still meshed with the rack 41, and further the support shaft 42 and the lower limiting table 4 are driven to ascend through the rack 41, so that a test sample is fed for testing; after the sample is broken, the user controls the limiting rod 72 to move towards the other end of the strip-shaped hole 111, when the rotating shaft 5 is driven to move to the other second gear 52 to be meshed with the face gear 61, the face gear 61 drives the rotating shaft 5 to rotate reversely through the second gear 52, and then the rack 41 is driven to move downwards through the first gear 51, so that the lower limiting table 4 descends, the next test is ready to be carried out, the lower limiting table 4 can be controlled to ascend and descend through the unidirectional rotation of the driving motor 6, the driving motor 6 does not need to rotate forwards and backwards frequently, and the service life is prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a strain gauge does not have lateral limit pressure test appearance, includes frame (1), its characterized in that: frame (1) upper end is equipped with dynamometry ring (2), be equipped with percentage table (21) in dynamometry ring (2), the tip is contradicted with dynamometry ring (2) under percentage table (21), tip is equipped with upper limit platform (3) under dynamometry ring (2), tip is equipped with down limit platform (4) under frame (1), lower tip has set firmly rack (41) down, rack (41) and frame (1) sliding connection, tip is equipped with axis of rotation (5) under frame (1), the intermediate position of axis of rotation (5) has set firmly first gear (51) with rack (41) adaptation, frame (1) rotates and is connected with face gear (61), the coaxial fixedly connected with driving motor (6) of face gear (61), axis of rotation (5) have set firmly two second gear (52) with face gear (61) adaptation.

2. The strain type unconfined pressure tester as claimed in claim 1, wherein: the first gear (51) is long in length.

3. The strain type unconfined pressure tester as claimed in claim 1, wherein: the lower end of the rack (1) is fixedly provided with a safety cover (11), and the rack (41), the first gear (51), the second gear (52) and the face gear (61) are all positioned in the safety cover (11).

4. The strain type unconfined pressure tester as claimed in claim 3, wherein: safety guard (11) sliding connection has adjusting lever (7), adjusting lever (7) and axis of rotation (5) parallel arrangement, and adjusting lever (7) have set firmly fixture block (71) of two parallels, and fixture block (71) all rotate with axis of rotation (5) and are connected, and adjusting lever (7) are rotated and are connected with gag lever post (72), and bar hole (111) have been seted up in safety guard (11), and bar hole (111) level sets up, and bar hole (111) intercommunication has two spacing holes (112) with gag lever post (72) adaptation.

5. The strain type unconfined pressure tester as claimed in claim 1, wherein: and a hand wheel (53) is fixedly arranged at one end of the rotating shaft (5) along the length direction.

6. The strain type unconfined pressure tester as claimed in claim 1, wherein: lower spacing platform (4) rotate and are connected with two-way lead screw (8), the equal threaded connection in both ends of two-way lead screw (8) has limiting plate (81), and spacing platform sets firmly guide bar (82) parallel with two-way lead screw (8), and two limiting plate (81) all with guide bar (82) sliding connection.

7. The strain type unconfined pressure tester as claimed in claim 1, wherein: frame (1) has set firmly two vertical support columns (12), and frame (1) upper end is equipped with backup pad (13), and threaded rod (14) have all set firmly in support column (12) upper end, and two threaded rod (14) all with backup pad (13) sliding connection, threaded rod (14) equal threaded connection have two spacing bolt (9), percentage table (21) and backup pad (13) fixed connection.

8. The strain type unconfined pressure tester as claimed in claim 7, wherein: the force measuring ring (2) is in threaded connection with the supporting plate (13), and the upper limiting table (3) is in threaded connection with the force measuring ring (2).

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