CN219495936U - Ring stiffness testing machine - Google Patents

Abstract

The utility model discloses a ring stiffness testing machine, which relates to the technical field of testing equipment and comprises a bearing table, a pressure plate, limiting blocks and a telescopic cylinder, wherein an arc-shaped groove is formed in the middle of the upper surface of the bearing table, a plurality of groups of limiting blocks are symmetrically distributed on the inner wall of the arc-shaped groove at equal intervals, the limiting blocks are of an arc-shaped structure and are embedded in the bearing table, two groups of bosses are symmetrically arranged on the upper surface of the bearing table, a moving block is slidably arranged in the bosses, and a supporting rod is fixed on the upper surface of the moving block. The utility model has reasonable structure, can carry out multi-point positioning on the pipeline on the bearing table due to the arrangement of the limiting blocks, effectively improves the stability of the pipeline when being pressed, and the plurality of groups of limiting blocks are of arc-shaped structures, can be turned and tightly attached towards the pipeline through the extrusion blocks of the conical structures at the horizontal positions in the bearing table, and can synchronously turn and clamp the pipeline by synchronously driving the two groups of telescopic cylinders, thereby not only improving the clamping point position, but also reducing the cost of the clamp.

Description

Ring stiffness testing machine

Technical Field

The utility model relates to the technical field of test equipment, in particular to a ring stiffness testing machine.

Background

The ring stiffness is the load born by the pressure pipeline and has internal pressure and external pressure, the stiffness of the material, the member or the structure with external force is measured by the external force value required by unit deformation, the ring stiffness tester is an auxiliary device for detecting the ring stiffness of the pipe, the ring stiffness tester is widely used in the field of testers, the ring stiffness is a comprehensive parameter of the external pressure load resistance of the buried pipe, the ring stiffness detection is required to be carried out by the tester before the pipe leaves the factory for ensuring the composite use standard of the pipe, and a fixing mechanism is added on the tester for improving the test stability of the ring stiffness, but the current fixing mechanism can only be oppositely clamped by two opposite cylinders at one part of the test steel pipe, so that the limited test position range is provided, the test effect is not ideal, and the manufacturing cost of the tester is improved if a plurality of cylinders are added for fixing the pipe.

Disclosure of Invention

The utility model aims at providing a ring rigidity testing machine, can carry out the multiple spot location to the pipeline on the plummer owing to the setting of stopper, effectively promote the stability of pipeline when the pressurized to multiunit stopper is arc structure, through the extrusion piece of toper structure at plummer inside horizontal position, can be closely laminated towards the pipeline upset, the synchronous drive of two sets of telescopic cylinder, can drive the synchronous upset with multiunit stopper and with the pipeline centre gripping, not only promoted the point position of centre gripping, also reduced the cost of anchor clamps.

In order to achieve the above purpose, the present application provides the following technical solutions: the ring stiffness testing machine comprises a bearing table, a pressure plate, limiting blocks and a telescopic cylinder, wherein an arc-shaped groove is formed in the middle of the upper surface of the bearing table, a plurality of groups of limiting blocks are symmetrically distributed on the inner wall of the arc-shaped groove at equal intervals, and the limiting blocks are of an arc-shaped structure and are embedded in the bearing table;

the upper surface of the bearing table is symmetrically provided with two groups of bosses, a moving block is slidably arranged in the bosses, a supporting rod is fixed on the upper surface of the moving block, one end of the supporting rod, which is far away from the moving block, is fixedly connected with a supporting plate, the bottom end surface of the supporting plate is movably provided with a pressure plate, which is close to an arc-shaped groove of the bearing table, and a hydraulic cylinder is arranged between the pressure plate and the supporting plate;

the position of the plummer corresponding to the limiting block is provided with a notch, the notch is arranged at the equidistant part of the plummer along the length direction, a plurality of groups of extrusion blocks are arranged at the position, close to the notch, of the plummer, the extrusion blocks are of conical structures, a plurality of groups of connecting rods are connected in series between the extrusion blocks, the extrusion blocks are attached to the inner part of the limiting block, and the extrusion blocks and the connecting rods are horizontally displaced along the inner part of the plummer.

Preferably, a mounting block is integrally formed on the inner wall of the notch, and a mounting hole is formed in the mounting block.

Preferably, the rotating shafts are symmetrically welded on the outer walls of the two sides of the limiting block in a protruding mode, the rotating shafts penetrate into the mounting holes, and the limiting block is turned over by taking the connecting positions of the rotating shafts and the mounting blocks as supporting points.

Preferably, a fixing frame is fixedly arranged on the side wall of the bearing table, and a telescopic cylinder is fixedly arranged in the fixing frame in a penetrating mode.

Preferably, the telescopic end of the telescopic cylinder penetrates into the bearing table and is fixed with the connecting rods, and the telescopic cylinder drives a plurality of groups of connecting rods and the extrusion blocks to synchronously displace.

Preferably, the back of stopper has the arch, protruding and extrusion piece's outer wall laminating.

Preferably, a screw rod is rotatably installed in the boss, the screw rod penetrates through the moving block to be in threaded connection with the moving block, and a motor for driving the screw rod to rotate is installed in the bearing table.

In summary, the utility model has the technical effects and advantages that:

1. the utility model has reasonable structure, can carry out multi-point positioning on the pipeline on the bearing table thanks to the arrangement of the limiting blocks, effectively improves the stability of the pipeline when being pressed, and the plurality of groups of limiting blocks are of arc-shaped structures, can be turned and tightly attached towards the pipeline through the extrusion blocks of the conical structures at the horizontal positions in the bearing table, and can drive the plurality of groups of limiting blocks to synchronously turn to clamp the pipeline by synchronous driving of the two groups of telescopic cylinders, thereby not only improving the clamping point position, but also reducing the cost of the clamp;

2. through setting up mobilizable pressure board on the plummer, support cooperation through movable block and boss makes pressure board have mobilizable effect to can carry out the test to the scope to the pipeline under the condition that does not remove the pipeline, promote the effect of test.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a ring stiffness tester;

FIG. 2 is a schematic view of a partial perspective structure of a ring stiffness tester;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

FIG. 4 is a schematic view of a partial perspective structure of a limiting block and an extrusion block;

in the figure: 1. a carrying platform; 2. a telescopic cylinder; 3. a support rod; 4. a support plate; 5. a hydraulic cylinder; 6. a limiting block; 7. a screw rod; 8. a pressure plate; 9. a moving block; 10. a boss; 11. a rotation shaft; 12. a notch; 13. extruding a block; 14. a mounting block; 15. a connecting rod; 16. a protrusion; 17. and a fixing frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to the ring stiffness testing machine shown in fig. 1 and 2, a bearing table 1, a pressure plate 8, limiting blocks 6 and a telescopic cylinder 2 are arranged, wherein an arc-shaped groove is formed in the middle of the upper surface of the bearing table 1, a plurality of groups of limiting blocks 6 are symmetrically distributed on the inner wall of the arc-shaped groove at equal intervals, and the limiting blocks 6 are of an arc-shaped structure and are embedded in the bearing table 1; the upper surface symmetry of plummer 1 is equipped with two sets of bosss 10, the inside slidable mounting of boss 10 has movable block 9, the upper surface fixed of movable block 9 has bracing piece 3, one end fixedly connected with backup pad 4 that movable block 9 was kept away from to the bracing piece 3, the bottom face activity of backup pad 4 sets up the pressure plate 8 that is close to towards the arc recess of plummer 1, install pneumatic cylinder 5 between pressure plate 8 and the backup pad 4, screw rod 7 is installed in the internal rotation of boss 10, screw rod 7 passes movable block 9 and threaded connection with it, the internally mounted of plummer 1 has the pivoted motor of drive screw rod 7. The motor drives the screw rod 7 to rotate forwards and reversely, the moving block 9 horizontally moves along the inside of the boss 10, the hydraulic cylinder 5 stretches out to drive the pressure plate 8 to move towards the pipeline to apply pressure to the pipeline, and the ring stiffness test of the pipeline is realized.

Referring to fig. 3, a notch 12 is formed in the bearing table 1 corresponding to the position of the limiting block 6, the notch 12 is formed in an equidistant portion of the bearing table 1 along the length direction, a plurality of groups of extrusion blocks 13 are arranged in the bearing table 1 near the notch 12, the plurality of groups of extrusion blocks 13 are in a conical structure, a plurality of groups of connecting rods 15 are connected in series between the extrusion blocks 13 and the limiting block 6, and the plurality of groups of extrusion blocks 13 and the connecting rods 15 are horizontally displaced along the inner portion of the bearing table 1. The inner wall of the notch 12 is integrally provided with a mounting block 14, and the mounting block 14 is provided with a mounting hole. Since the extrusion block 13 has a tapered structure, the closer to one end of the large diameter, the greater the swing angle of the stopper 6 until the stopper 6 clamps the pipe.

Referring to fig. 4, the rotation shafts 11 are symmetrically welded on the outer walls of the two sides of the limiting block 6 in a protruding mode, the rotation shafts 11 penetrate into the installation holes, the limiting block 6 is turned over by taking the connection positions of the rotation shafts 11 and the installation blocks 14 as supporting points, a fixing frame 17 is fixedly installed on the side wall of the bearing table 1, a telescopic cylinder 2 is fixedly arranged in the fixing frame 17 in a penetrating mode, the telescopic end of the telescopic cylinder 2 penetrates into the bearing table 1 and is fixed with the connecting rod 15, the telescopic cylinder 2 drives a plurality of groups of connecting rods 15 and the extrusion blocks 13 to synchronously displace, the back of the limiting block 6 is provided with protrusions 16, and the protrusions 16 are attached to the outer wall of the extrusion blocks 13. Through the synchronous drive of two sets of flexible cylinders 2, can drive synchronous upset with multiunit stopper 6 and with the pipeline centre gripping, not only promoted the point position of centre gripping, also reduced the cost of anchor clamps to can be according to the diameter adjustment flexible cylinder 2's of pipeline extension scope, make the control of the travel distance of extrusion piece 13, thereby the upset scope of stopper 6 changes, adapts to not unidimensional pipeline.

The working principle of the utility model is as follows:

when in use, firstly, a pipeline needing ring stiffness test is placed into a groove on the bearing table 1, then the telescopic cylinder 2 is started, the telescopic cylinder 2 stretches out to drive the connecting rod 15 and the extrusion block 13 to synchronously move, the connecting rod 15 and the extrusion block 13 horizontally displace in the bearing table 1, along with the transverse movement of the extrusion block 13 with a conical structure, the contact surface between the extrusion block 13 and the bulge 16 at the back of the limiting block 6 is continuously changed, because the extrusion block 13 is of a conical structure, when the extrusion block 13 is closer to one end with a large diameter, the swinging angle of the limiting block 6 is larger until the limiting block 6 clamps the pipeline, the limiting block 6 is symmetrically distributed on two sides of the pipeline in an arc structure, and a plurality of groups of limiting blocks 6 can be driven to synchronously overturn to clamp the pipeline through synchronous driving of two groups of telescopic cylinders 2, not only promoted the position of centre gripping, also reduced the cost of anchor clamps, and can be according to the diameter adjustment telescopic cylinder 2's of pipeline extension scope, make the travel distance's of extrusion piece 13 control, thereby the upset scope of stopper 6 changes, adapt to not unidimensional pipeline, after stopper 6 atress is tight towards the pipeline, can carry out rigidity test to the different positions of pipeline through pressure plate 8, forward rotation through motor drive lead screw 7, the reversal, the inside horizontal migration of movable block 9 along boss 10, hydraulic cylinder 5 stretches out and drives pressure plate 8 and remove towards the pipeline and exert pressure to the pipeline, realize the ring rigidity test to the pipeline, if damage, deformation appear after the pressure of pipeline receives the test, the hardness demand is not satisfied.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The ring stiffness testing machine comprises a bearing table (1), a pressure plate (8), limiting blocks (6) and a telescopic cylinder (2), and is characterized in that an arc-shaped groove is formed in the middle of the upper surface of the bearing table (1), a plurality of groups of limiting blocks (6) are symmetrically distributed on the inner wall of the arc-shaped groove at equal intervals, and the limiting blocks (6) are of an arc-shaped structure and are embedded in the bearing table (1);

the bearing table is characterized in that two groups of bosses (10) are symmetrically arranged on the upper surface of the bearing table (1), a moving block (9) is slidably arranged in the bosses (10), a supporting rod (3) is fixed on the upper surface of the moving block (9), one end, far away from the moving block (9), of the supporting rod (3) is fixedly connected with a supporting plate (4), a pressure plate (8) close to an arc-shaped groove of the bearing table (1) is movably arranged on the bottom end surface of the supporting plate (4), and a hydraulic cylinder (5) is arranged between the pressure plate (8) and the supporting plate (4);

notch (12) have been seted up to the position that corresponds stopper (6) on plummer (1), the length direction equidistance part of plummer (1) is followed to notch (12), the inside of plummer (1) is close to notch (12) department and is equipped with multiunit extrusion piece (13), multiunit extrusion piece (13) are the toper structure and establish ties between have multiunit connecting rod (15), extrusion piece (13) laminate with the inside of stopper (6), and multiunit extrusion piece (13), connecting rod (15) are along the inside horizontal displacement of plummer (1).

2. A machine for testing loop stiffness as claimed in claim 1, wherein: the inner wall of the notch (12) is integrally provided with a mounting block (14), and the mounting block (14) is provided with a mounting hole.

3. A machine for testing loop stiffness as claimed in claim 2, wherein: the two side outer walls of the limiting block (6) are symmetrically welded with rotating shafts (11) in a protruding mode, the rotating shafts (11) penetrate into the installation holes, and the limiting block (6) is turned over by taking the connection positions of the rotating shafts (11) and the installation blocks (14) as supporting points.

4. A machine for testing loop stiffness as claimed in claim 1, wherein: a fixing frame (17) is fixedly arranged on the side wall of the bearing table (1), and a telescopic cylinder (2) is fixedly arranged in the fixing frame (17) in a penetrating mode.

5. The ring stiffness tester of claim 4, wherein: the telescopic end of the telescopic cylinder (2) penetrates into the bearing table (1) and is fixed with the connecting rods (15), and the telescopic cylinder (2) drives the plurality of groups of connecting rods (15) and the extrusion blocks (13) to synchronously displace.

6. A machine for testing loop stiffness as claimed in claim 1, wherein: the back of the limiting block (6) is provided with a bulge (16), and the bulge (16) is attached to the outer wall of the extrusion block (13).

7. A machine for testing loop stiffness as claimed in claim 1, wherein: the inside rotation of boss (10) is installed lead screw (7), lead screw (7) pass movable block (9) and threaded connection with it, the internally mounted of plummer (1) has drive lead screw (7) pivoted motor.