CN211085928U

CN211085928U - Annular rubber pressure loading test bed

Info

Publication number: CN211085928U
Application number: CN201921682070.4U
Authority: CN
Inventors: 王雷; 张印; 周黎明; 司录荣; 王龙
Original assignee: Inner Mongolia First Machinery Group Corp
Current assignee: Inner Mongolia First Machinery Group Corp
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-24
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses an annular rubber pressure loading test bed, which belongs to the technical field of material mechanical property test and is a pulley mechanism with compact design, and realizes the pressure amplification of a material loading end and the displacement amplification of a deformation measuring end; and a gear selecting and releasing mechanism of the balance weight is designed to realize the adjustment of the loading pressure. The utility model relates to an annular rubber pressure loading test bed, which comprises an outer ring, an inner ring, an upper platform, a movable plate, a base, a steel wire rope, a pulley, a lever, a balancing weight, a pull rod, a guide rod, a bracket, a tension main shaft, a nut, a round nut, a linear bearing, a press hammer and annular rubber; the utility model designs a compact pulley mechanism, which realizes the pressure amplification of the material loading end and the displacement amplification of the deformation measuring end; and a gear selecting and releasing mechanism of the balance weight is designed to realize the adjustment of the loading pressure.

Description

Annular rubber pressure loading test bed

Technical Field

The utility model belongs to the technical field of the mechanical properties of material tests, a design that vehicle transmission system zhonghuan ring rubber shock-absorbing structure confronts pressure deformation capability test mechanism is related to.

Background

The elastic material has wide application in the fields of mechanical shock absorption, sealing and the like, and the mechanical property of the elastic material is also concerned. The input end and the output end of a vehicle transmission system are usually subjected to structural shock absorption and buffering by using an annular rubber structure, the mechanical property of a buffering structure also directly influences the axial displacement of the transmission system in the vehicle running process, and the mechanical property of the buffering structure is very necessary to be intuitively tested and described by adopting a simple method. The movable pulley mechanism is an extension application of a lever principle, and the application of the principle can reduce the stress of the mechanism and enhance the readability of the deformation quantity of the material, thereby realizing the quantitative description of the mechanical property of the material. Compared with the traditional hydraulic and lead screw loading mechanism, the scheme of the pulley mechanism realizes the structure simplification and the cost reduction on the premise of meeting the use requirement.

Chinese patent 201010579187.7 discloses a rack and pinion type hydraulic horizontal loading retracting mechanism, which uses a movable pulley block, a fixed pulley block and a rack and pinion mechanism to reverse the driving force provided by a hydraulic cylinder, thereby ensuring the horizontal constancy of the loading direction.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an annular rubber pressure loading test bed, which is a pulley mechanism with compact design and realizes the pressure amplification of a material loading end and the displacement amplification of a deformation measuring end; and a gear selecting and releasing mechanism of the balance weight is designed to realize the adjustment of the loading pressure.

The technical scheme of the utility model is that:

an annular rubber pressure loading test bed is characterized by comprising an outer ring, an inner ring, an upper platform, a moving disc, a base, a steel wire rope, a pulley, a lever, a balancing weight, a pull rod, a guide rod, a support, a tension main shaft, a nut, a round nut, a linear bearing, a pressing hammer and annular rubber; the upper platform is fixed on the supporting legs above the base; the periphery of the tension main shaft is provided with a linear bearing and penetrates through a central hole of the upper platform, a round nut is connected to the tension main shaft in a threaded mode and is positioned above a pressing hammer, and the pressing hammer penetrates through the upper portion of the tension main shaft; the pair of inner rings, the pair of annular rubbers and the pair of outer rings are sequentially nested back to form a group of supporting structures, and the two groups of supporting structures are fixed at two ends of the pressing hammer respectively through screws uniformly distributed in the circumferential direction; a movable disc is fixed at the lower end of the tension main shaft, and eight pulleys are uniformly distributed and fixed on the lower end surface of the movable disc in the circumferential direction; eight pulleys are uniformly distributed and fixed on the circumference of the upper surface of the base, correspond to the eight pulleys on the movable disc in position, and have the same distributed circumferential radius; the angle difference between the pulley on the base and the adjacent pulley on the movable disc is 22.5 degrees; the steel wire rope is alternately and reciprocally inserted between the pulley on the base and the pulley on the movable disc up and down; a guide rod is vertically fixed in the bracket and vertically penetrates through the five balancing weights; one end of the steel wire rope is hung on a hanging ring fixed on the base, and is sequentially bridged over a movable disc and a pulley on the base, then sequentially strides over a pulley at the lower left of the bracket from bottom to top, and then sequentially strides over a second pulley at the top of the bracket; the other end is hung on a hanging ring at the top end of the pull rod; the pull rod passes through the balancing weight.

Preferably, two guide rods are vertically fixed inside the bracket; sequentially penetrating two guide rods through five balancing weights and the top sleeve and then inserting the guide rods into two blind holes in the base; the support is fixed on the base.

Preferably, the matching part of the side surface of the pull rod and the balancing weight is provided with a through hole, and the adjusting pin can penetrate through the side holes of the balancing weight and the pull rod to complete the fixation of the relative position of the balancing weight and the pull rod.

Preferably, the device also comprises a lever in the shape of L, the end part of the short right-angle edge of the lever is hinged with 2 top sleeves through a pin shaft, and the roller is arranged at the right angle of the lever in the shape of L by the pin shaft.

Preferably, the weight block has a plurality.

Preferably, the bearing further comprises a gland, and the gland is screwed into a threaded hole in the top of the upper platform and is positioned above the linear bearing.

Preferably, the side surface of the guide rod is marked with scales, and the position of the balancing weight is read through the scales on the guide rod.

Preferably, the upper platform is welded in parallel to the four legs of the base.

Preferably, the pulley is fixed by a pulley block.

Preferably, the second pulley at the top of the bracket has two.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the pair of inner rings 2, the pair of annular rubbers 25 and the pair of outer rings 1 of the utility model are sequentially nested back to form a group of supporting structures, the upper platform 3 is contacted with the outer rings 1 by the side surfaces of the semi-cylinders, and the use working condition of the buffer rubber structure in the vehicle is completely reproduced;

2. the utility model uses sixteen pulley assemblies 9 which are distributed on the movable disk 4 and the base 5, the steel wire rope 8 is inserted on the two groups of pulley assemblies 9 in a reciprocating way, the pulling force in the steel wire rope 8 is amplified by sixteen times and then acts on the annular rubber 25 between the press hammer 22 and the upper platform 3, and the stress requirement of the mechanism is reduced;

3. the pulley mechanism formed by the sixteen pulley assemblies 9 of the utility model amplifies the deformation of the annular rubber 25 by sixteen times and reflects the amplified deformation to the displacement of the pull rod 14 and the balancing weight 13, scales are carved on the guide rod 15, and the position of the balancing weight 13 can be directly read through the scales on the guide rod 15;

4. the lever 10, the roller 11 and the top sleeve 24 of the utility model form a labor-saving lever mechanism, which is convenient for releasing the balance weight;

5. the balancing weights 13 of the utility model are five in total, and the adjustment of the number of the balancing weights 13 on the pull rod 14 can be conveniently realized through the adjusting pin 12, thereby realizing the adjustment of the loading force;

6. the utility model discloses simple structure is reliable, and the commonality is good.

A compact pulley mechanism is designed to realize the pressure amplification of a material loading end and the displacement amplification of a deformation measuring end; and a gear selecting and releasing mechanism of the balance weight is designed to realize the adjustment of the loading pressure.

The utility model discloses can be applied to the compressive property test of multiple elastic material annular appearance piece, can realize the multiple spot test in certain loading force scope, provide simple and feasible new approach for annular rubber buffer structure's mechanical properties test.

Drawings

FIG. 1 is a three-dimensional block diagram of the present invention;

fig. 2 is a partial cross-sectional view of the compressed region of the annular rubber 25 of the present invention;

fig. 3 is a layout view of the pulley assembly 9 on the movable plate 4 of the present invention;

FIG. 4 is a cross-sectional view of the load weight adjustment area of the present invention;

fig. 5 shows the lever 10 of the present invention in a raised state;

fig. 6 shows the state of the lever 10 of the present invention pressed downward

Fig. 7 is a deployment diagram of the pulley mechanism.

In the figure, 1, outer ring; 2. an inner ring; 3. an upper platform; 4. a movable tray; 5. a base; 6. a hoisting ring; 7. hooking; 8. a wire rope; 9. a pulley assembly; 10. a lever; 11. a roller; 12. an adjustment pin; 13. a balancing weight; 14. a pull rod; 15. a guide bar; 16. a support; 17. a tension main shaft; 18. a nut; 19. a round nut; 20. a linear bearing; 21. a gland; 22. pressing a hammer; 23. a pin shaft; 24. jacking and sleeving; 25. an annular rubber; 26. and (4) screws. 27 second pulley assembly.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

The purpose of the utility model is realized like this, combine the figure to explain as follows:

1. an annular rubber pressure loading test bed comprises 26 parts, namely an outer ring 1, an inner ring 2, an upper platform 3, a moving disc 4, a base 5, a hanging ring 6, a hook 7, a steel wire rope 8, a pulley assembly 9, a lever 10, a roller 11, an adjusting pin 12, a balancing weight 13, a pull rod 14, a guide rod 15, a support 16, a tension main shaft 17, a nut 18, a round nut 19, a linear bearing 20, a bearing gland 21, a press hammer 22, a pin shaft 23, a top sleeve 24, an [ experimental object ] annular rubber 25 and a screw 26.

The upper platform 3 is welded on the four support legs of the base 5 in parallel; the tension main shaft 17 and the upper platform 3 form a moving pair through a linear bearing 20, and a gland 21 is screwed into a threaded hole in the top of the upper platform 3 to tightly press the linear bearing 20; the round nut 19 fixes the pressing hammer 22 on the upper part of the tension main shaft 17 through threaded connection; the pair of inner rings 2, the pair of annular rubbers 25 and the pair of outer rings 1 are sequentially nested back to form a group of supporting structures, and the two groups of supporting structures are respectively fixed at two ends of the pressing hammer 22 through screws 26 which are uniformly distributed in the circumferential direction. The upper platform 3 contacts with the outer ring 1 by a semi-cylindrical side face, and the use working condition of the buffer rubber structure in the vehicle is completely reproduced.

2. The lower end of the tension main shaft 17 is fixed with the movable disc 4 through a nut 18, and eight pulley assemblies 9 are uniformly distributed and fixed on the lower end face of the movable disc 4 in the circumferential direction. The pulley assembly 9 includes a pulley and a pulley holder.

3. 3 the upper surface of the base 5 is correspondingly fixed with eight pulley assemblies 9 at the corresponding positions of the eight pulley assemblies on the movable disk 4, the distributed circumferential radiuses of the upper and lower pulley assemblies 9 are equal, the circumferential angles are different by 22.5 degrees [ the circumferential angles of the upper and lower corresponding pulleys are different by 22.5 degrees ], and a hanging ring 6 is fixed in the eight pulley assemblies 9 near the leftmost pulley by processing a threaded hole. The lifting ring 6 is connected with a steel wire rope.

The steel wire rope 8 is inserted on the two groups of pulley assemblies 9 in a reciprocating way, so that the upper and lower groups of pulley assemblies 9 form a labor-saving mechanism. The tension in the steel wire rope 8 is amplified by 16 times and then acts on the tension main shaft 17, and meanwhile, the deformation quantity of the tested sample piece is amplified by 16 times and then reflected on the displacement of the tail end of the steel wire rope 8.

4. The support 16 is fixed on one side of the base 5, the support 16 is hollow, 2 guide rods 15 are vertically fixed, and the 2 guide rods 15 penetrate through five balancing weights 13 and a top sleeve 24 respectively. The top sleeve 24 limits the bottom end of the balancing weight; the side surface of the guide rod 15 is marked with scales, and the position of the balancing weight 13 can be directly read through the scales on the guide rod 15.

5. The lever 10 is in an L shape, the end part of the short right-angle edge of the lever is hinged with the two jacking sleeves 24 through a pin shaft 23, the right-angle peak is hinged with the roller 11 through the pin shaft 23, the lever 10, the pin shaft 23, the roller 11 and the jacking sleeves 24 form a labor-saving lever mechanism, and the long right-angle edge of the lever 10 is pressed down to jack up the balancing weight 13 by taking the contact point of the roller 11 and the base 5 as a fulcrum, so that the balance weight is released.

6. The top threaded hole of the pull rod 14 is fixed with a hanging ring, the side surface of the pull rod is matched with five balancing weights 13 to form through holes correspondingly, and the adjusting pin 12 penetrates through one of the five through holes of the balancing weights 13 and the pull rod 14 to complete the fixation of the relative positions of the balancing weights 13 and the pull rod 14. A certain balancing weight 13 is connected with the pull rod 14, so that the quantity of the balancing weights 13 on the pull rod 14 can be conveniently adjusted, and the adjustment of the loading force is realized.

7. Two ends of the steel wire rope 8 are tightly pressed with two hooks 7, one end of the steel wire rope is hung on a hanging ring 6 fixed on the base 5, the middle of the steel wire rope is crossed and connected with the movable plate 4 and sixteen pulley assemblies 9 on the base 5 in a crossing manner, the pulley assemblies 9 on the left lower side of the support 16 are crossed from bottom to top, the pulley assemblies 9 on the left upper corner and the top of the support 16 are sequentially crossed from top to bottom, and the hook 7 on the other end is hung on the hanging ring 6 on the top end of the pull rod 14.

The pulley assemblies 9 under the movable disc 4 are crossed from bottom to top, and then the pulley assemblies 9 under the base d are crossed and crossed over the movable disc 4 and sixteen pulley assemblies 9 on the base 5 from top to bottom; and the second pulley assemblies cross the top part from top to bottom.

One, the utility model discloses an assembly step

1. Referring to fig. 2, the upper platform 3 is welded to four legs of the base 5; the linear bearing 20 is placed in the center hole of the upper platform, and the gland 21 is screwed in to fix the linear bearing 20 firmly.

2. Referring to fig. 1 and 2, a pair of inner rings 2, a pair of annular rubbers 25 and a pair of outer rings 1 are sequentially nested back to form a group of support structures, then the two groups of support structures are respectively fixed at two ends of a press hammer 22 through screws 26 which are uniformly distributed in the circumferential direction, and finally the press hammer 22 is placed into an inner hole of a linear bearing 20 and is pressed tightly through a round nut 19, so that the outer rings 1 are guaranteed to be aligned with the semi-annular support of an upper platform 3.

3. Referring to fig. 1 and 4, two guide rods 15 are inserted into two blind holes on a base 5 after sequentially passing through five balancing weights 13 and a top sleeve 24, a support 16 is fixed on the base 5 by screws to ensure that a hole at the top of the support 16 is correctly matched with the guide rods 15, a roller 11 is arranged at a right angle of an L-shaped lever 10 by a pin shaft 23, the end part of the short side of the lever 10 is hinged with the top sleeve 24 by the pin shaft 23, a hanging ring is screwed into a threaded hole at the upper end of a pull rod 14, the pull rod 14 is inserted into central holes of the five balancing weights 13 from top to bottom, and the pull rod 14 and the balancing weights 13 are fixed by an adjusting pin 12 after aligning the side hole positions of.

4. Referring to fig. 1 and 7, the rest of the pulley assembly 9 and the hanging ring 6 are fixed on the corresponding positions of the base 5 and the bracket 16 by screws; the hooks 7 are pressed at two ends of a steel wire rope 8, the hook 7 at one end is hung on a lifting lug fixed on the base 5, the middle of the hook is crossed over sixteen pulley assemblies 9 on the moving platform and the base 5 in a crossing manner, the hook crosses over the pulley assembly 9 at the lower left of the support 16 from bottom to top, and then sequentially crosses over two second pulley assemblies at the upper left corner and the top of the support 16 from top to bottom; and finally, hanging the hook 7 at the other end on a hanging ring at the top end of the pull rod 14.

Second, the utility model discloses an operation mode

1. Referring to fig. 5 and 6, the lever 10 is pressed down to jack up the counterweight, the adjusting pin 12 is inserted into the matching hole of the uppermost counterweight block 13 and the pull rod 14, and the lever 10 is released slowly to complete one-time loading; and reading the scale value of the uppermost balancing weight 13 on the guide rod 15, and recording the scale and the corresponding balancing weight.

2. The lever 10 is pressed down, the adjusting pin 12 is inserted into the matching hole of the second balancing weight block 13 (counted from top to bottom) and the pull rod 14, the step 1 is repeated, five times of loading are completed, and five groups of data are recorded.

Thirdly, the utility model discloses a theory of operation

The inner ring 2, the annular rubber 25, the outer ring 1 and the upper platform 3 are matched with each other, and the use working condition of the buffer rubber structure in the vehicle is reproduced.

The press hammer 22, the tension main shaft 17, the movable platform and eight pulley assemblies 9 fixed on the movable platform are used as a whole body which is mutually fixed, and form a sliding pair with the upper platform 3 through a linear bearing 20; eight pulley assemblies 9 on the base 5 and pulley assemblies 9 on the movable disc 4 are arranged on the circumference with the same radius at intervals of 22.5 degrees, the steel wire rope 8 is inserted in the upper and lower groups of pulley assemblies 9 in a reciprocating manner, sixteen times of tensile force in the steel wire rope 8 is amplified and then acts on the annular rubber 25 between the press hammer 22 and the upper platform 3, and meanwhile, sixteen times of deformation amount of the annular rubber 25 is amplified and reflected on the displacement of the tail end of the steel wire rope 8.

Five balancing weights 13 are stacked and form a moving pair with 2 guide rods 15; a through hole is drilled on the side surface of the pull rod 14 and the counterweight block 13 in a matching way; the pull rod 14 penetrates through the middle of the five stacked clump weights 13 and the through hole on the side surface of the clump weight 13 and the through hole on the side surface of the adjusting pin 12, so that the clump weights 13 and the adjusting pin 12 are fixed, and the lower the position where the adjusting pin 12 is selectively inserted is, the greater the pulling force borne by the pull rod 14 is, so that the five clump weights 13 and the pull rod 14 form gravity loading of five gears; a steel wire rope 8 crosses over a pulley assembly 9 fixed on a support 16 and a base 5 and is connected with the top end of a pull rod 14 through a hanging ring 6 and a hook 7, so that the conversion of the gravity of a balancing weight 13 to the pull force on a pull main shaft 17 is realized; meanwhile, the displacement of the tail end of the steel wire rope 8 is converted into the displacement relative to the guide rod 15, and can be read through scales on the guide rod 15.

The two jacking sleeves 24 respectively form a cylindrical pair with the two guide rods 15, form a rotating pair with the L-shaped lever 10 through the pin shaft 23, form a roller 11 through the pin shaft 23 at the right angle point of the L-shaped lever 10, form a line-surface contact pair with the upper plane of the base 5 through the roller 11, and press the long handle end of the lever 10 downwards, so that the jacking sleeves 24 can jack up the balancing weight 13 to move upwards on the guide rods 15, the steel wire rope 8 is loosened, and the adjustment of loading weight is facilitated.

All equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An annular rubber pressure loading test bed is characterized by comprising an outer ring (1), an inner ring (2), an upper platform (3), a moving disc (4), a base (5), a steel wire rope (8), a pulley, a lever (10), a balancing weight (13), a pull rod (14), a guide rod (15), a support (16), a tension main shaft (17), a nut (18), a round nut (19), a linear bearing (20), a press hammer (22) and annular rubber (25);

the upper platform (3) is fixed on the supporting legs above the base (5); the periphery of the tension main shaft (17) is provided with a linear bearing (20) and penetrates through a central hole of the upper platform (3), a round nut (19) is connected to the tension main shaft (17) in a threaded manner and is positioned above a pressing hammer (22), and the pressing hammer (22) penetrates through the upper part of the tension main shaft (17);

the pair of inner rings (2), the pair of annular rubbers (25) and the pair of outer rings (1) are sequentially nested back to form a group of supporting structures, and the two groups of supporting structures are respectively fixed at two ends of the press hammer (22) through screws (26) which are uniformly distributed in the circumferential direction;

the lower end of the tension main shaft (17) is fixed with a movable disc (4), and eight pulleys are uniformly distributed and fixed on the lower end surface of the movable disc (4) in the circumferential direction; eight pulleys are uniformly distributed and fixed on the circumference of the upper surface of the base (5), correspond to the eight pulleys on the movable disc (4) in position, and are distributed with equal circumferential radius; the angle difference between the pulley on the base and the adjacent pulley on the movable disc (4) is 22.5 degrees;

the pulley of the steel wire rope (8) on the base and the pulley on the movable disc (4) are alternately inserted up and down in a reciprocating way; a guide rod (15) is vertically fixed in the support (16), and the guide rod (15) vertically penetrates through the five balancing weights (13); one end of the steel wire rope is hung on a hanging ring fixed on the base (5), and is sequentially bridged over a pulley on the movable disc and the base, then sequentially strides over a pulley at the lower left of the bracket (16) from bottom to top, and then sequentially strides over a second pulley at the top of the bracket (16); the other end is hung on a hanging ring at the top end of the pull rod (14); the pull rod (14) passes through the balancing weight (13).

2. An annular rubber pressure loading test bed according to claim 1, characterized in that two guide rods (15) are vertically fixed inside the bracket (16); two guide rods sequentially penetrate through the five balancing weights and the top sleeve (24) and then are inserted into two blind holes in the base (5); the bracket (16) is fixed on the base.

3. The annular rubber pressure loading test bed according to claim 1, wherein a through hole is formed at a matching position of the side surface of the pull rod (14) and the balancing weight (13), and an adjusting pin can penetrate through side holes of the balancing weight (13) and the pull rod (14) to complete fixing of the relative position of the balancing weight (13) and the pull rod (14).

4. An annular rubber pressure loading test bed as claimed in claim 2, further comprising a lever (10) in the shape of L, wherein the end of the short right-angle edge is hinged with 2 top sleeves (24) through a pin shaft (23), and the roller is installed at the right angle of the lever in the shape of L through the pin shaft.

5. An annular rubber pressure loading test bed according to claim 3, characterized in that the balancing weight (13) is provided in plurality.

6. An annular rubber pressure loading test bed according to claim 1, characterized in that, the test bed further comprises a gland (21), and a threaded hole of the gland (21) screwed into the top of the upper platform (3) is positioned above the linear bearing (20).

7. The annular rubber pressure loading test bed according to claim 1, wherein scales are engraved on the side surface of the guide rod (15), and the position of the balancing weight (13) is read through the scales on the guide rod (15).

8. The annular rubber pressure loading test bed of claim 1, wherein the upper platform is welded in parallel to the four legs of the base.

9. The annular rubber pressure loading test bed of claim 1, wherein the pulley is fixed by a pulley seat.

10. The annular rubber pressure loading test bed of claim 1, wherein the second pulley at the top of the bracket has two.