CN210154940U

CN210154940U - Pipe ring rigidity detection equipment

Info

Publication number: CN210154940U
Application number: CN201920768069.7U
Authority: CN
Inventors: 王冰彦; 范逸波; 邱鹏
Original assignee: Jiaxing Zhongxin Engineering Testing Co Ltd
Current assignee: Jiaxing Zhongxin Engineering Testing Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-03-17
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a tubular product ring rigidity check out test set, its technical scheme main points are: the device comprises a rack, wherein the rack is connected with a detection mechanism, the detection mechanism comprises an upper pressing plate, a lower pressing plate and a cylinder, the upper pressing plate, the lower pressing plate and the cylinder are parallel, the cylinder drives the upper pressing plate to move up and down, the cylinder body of the cylinder is fixedly connected with the rack, the piston rod of the cylinder is fixedly connected with the upper pressing plate, and the lower pressing plate is fixedly connected with the rack; the lower pressing plate is connected with a centering mechanism, the centering mechanism comprises two positioning blocks, two positioning grooves are formed in the upper end of the lower pressing plate and are respectively located on two sides of the axis of the cylinder, the positioning blocks are respectively located in the positioning grooves, one ends, close to each other, of the two positioning blocks are hinged to the side walls of the positioning grooves, and one ends, far away from each other, of the two positioning blocks can rotate up and down. The utility model discloses a rational in infrastructure, utilize centering mechanism to make the sample be located check out test set's center to make the top board difficult emergence when receiving the reaction force of sample warp, thereby make the testing result keep accurate.

Description

Pipe ring rigidity detection equipment

Technical Field

The utility model belongs to tubular product check out test set, more specifically says, it relates to a tubular product ring rigidity check out test set.

Background

At present, after various pipes are finished off line, various performances of the pipes need to be tested, including hoop tensile strength, hoop rigidity and flattening tests, so as to detect whether the pipe performances meet the quality requirements. If the ring stiffness of the pipe is not enough, the pipe will generate excessive deformation or collapse, so the ring stiffness is the most important performance index for the pipe bearing external pressure. According to the national standard GB/9647-2003, the ring stiffness is measured by vertically compressing a specified pipe sample on two parallel plates according to specified conditions, so that the deformation of the pipe in the diameter direction reaches 3%, and calculating the ring stiffness according to the force causing 3% deformation measured by tests.

Because the existing testing machine is used for detecting the pipe, the pipe is difficult to be positioned at the center of the testing machine by means of visual inspection, and after a plurality of tests, the stress of the two parallel plates is unbalanced, so that the connection between the pipe and the frame of the testing machine is deformed, the two parallel plates are not parallel any more, and the detection precision of the testing machine is influenced.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a tubular product ring rigidity check out test set makes the sample be in check out test set's center, and parallel plate can keep parallel when examining, makes the result that detects keep accurate.

In order to achieve the above purpose, the utility model provides a following technical scheme: a pipe ring rigidity detection device comprises a rack, wherein the rack is connected with a detection mechanism, the detection mechanism comprises an upper pressing plate, a lower pressing plate and a cylinder, the upper pressing plate, the lower pressing plate and the cylinder are parallel, the cylinder body of the cylinder is fixedly connected with the rack, a piston rod of the cylinder is fixedly connected with the upper pressing plate, and the lower pressing plate is fixedly connected with the rack; the lower pressing plate is connected with a centering mechanism, the centering mechanism comprises two positioning blocks, two positioning grooves are formed in the upper end of the lower pressing plate, the two positioning grooves are respectively located on two sides of the axis of the cylinder, extension lines of the two positioning grooves are intersected with the axis of the cylinder, the positioning blocks are respectively located in the positioning grooves, one ends, close to each other, of the two positioning blocks are hinged to the side walls of the positioning grooves, and one ends, far away from each other, of the two positioning blocks can rotate up and down.

Through adopting above-mentioned technical scheme, after placing the sample on the holding down plate, upwards rotate the same angle respectively with two locating pieces, make two locating pieces all can with sample lateral wall butt, the axis of sample and the axis of cylinder are crossing this moment, the reaction force that the sample that the holding down plate received was applyed is located the middle part of top board this moment, make the junction of top board and cylinder piston rod can not produce the deformation, top board and holding down plate can keep parallel to make the result that detects can not receive the influence.

The utility model discloses further set up to: centering mechanism still includes two guide blocks of being connected with the holding down plate and two connecting rods with guide block and locating piece connection, the guide way has all been seted up to the locating slot bottom surface, the guide block is put and is slided with the guide way, the one end and the guide block upper end of connecting rod are articulated, the other end and the locating piece lower extreme of connecting rod are articulated.

By adopting the technical scheme, after the positioning block is rotated upwards, the rotating angle of the positioning block is detected by measuring the moving distance of the guide block, so that the rotating angles of the two positioning blocks are more convenient to measure.

The utility model discloses further set up to: the lower end of the lower pressing plate is fixedly connected with a fixed block, the fixed block is sleeved with a guide block, the guide block slides up and down along the fixed block, two opposite side faces of the guide block are hinged with guide rods, the other end of each guide rod is hinged with the lower end of the guide block, communicating grooves are formed in the lower ends of the guide grooves in a penetrating mode, and the guide rods are arranged in the communicating grooves to move.

Through adopting above-mentioned technical scheme, utilize guide block and guide rod to make two locating pieces rotate simultaneously, and the turned angle of two locating pieces can keep the same to it is more accurate to make centering mechanism's location effect.

The utility model discloses further set up to: the fixed block has cup jointed the spring, the upper end and the lower extreme butt of holding down plate of spring, the lower extreme and the guide block upper end butt of spring work as when the locating piece is in the horizontality, the pin joint of connecting rod and locating piece is located between pin joint and the guide block of locating piece and constant head tank.

By adopting the technical scheme, the downward elastic force is applied to the guide block by the spring, so that the two positioning blocks are driven to rotate upwards, the positioning is not required to be manually rotated upwards, and the using process of the centering mechanism is more convenient.

The utility model discloses further set up to: two sliding grooves are formed in the side wall of the lower pressing plate and are respectively communicated with the positioning groove, a limiting groove is formed in the side wall, close to the sliding groove, of the positioning block, a limiting rod is connected to the sliding groove in a sliding mode, and the limiting rod can be arranged in the limiting groove in an inserting mode.

The utility model discloses further set up to: the sliding groove is perpendicular to the positioning groove, and the end faces, far away from the positioning block, of the limiting rods are fixedly connected with a pushing rod.

Through adopting above-mentioned technical scheme, utilize the catch bar can remove two gag lever posts simultaneously to reduced the time that the removal gag lever post need be spent, reduced the time that the preparation step needs before detecting, increased the efficiency that the sample detected.

The utility model discloses further set up to: the limiting rod is provided with a wedge-shaped surface on the end surface close to the positioning block.

Through adopting above-mentioned technical scheme, utilize the wedge to reduce the area of gag lever post towards the spacing groove to make the gag lever post change and insert the spacing inslot.

The utility model discloses further set up to: and a glass fiber reinforced plastic coating is arranged at the contact position of the guide block and the guide groove.

Through adopting above-mentioned technical scheme, utilize glass steel coating to reduce the frictional force between guide block and the guide way to make the removal process of guide block more laborsaving.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model uses the centering mechanism to make the axis of the sample intersect with the axis of the cylinder, so that the reaction force exerted by the sample on the upper pressure plate is positioned in the middle of the upper pressure plate, the joint of the upper pressure plate and the piston rod of the cylinder is not easy to deform, and the upper pressure plate and the lower pressure plate can keep parallel, thereby the detection result is not influenced;

2. the guide block and the guide rod are utilized to enable the two positioning blocks to rotate at the same angle, so that the positioning result is more accurate.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic diagram of the present embodiment showing a centering mechanism;

fig. 3 is an enlarged view of a portion a of fig. 2.

Description of the drawings: 1. a frame; 2. a detection mechanism; 21. an upper pressure plate; 22. a lower pressing plate; 221. positioning a groove; 222. a guide groove; 223. a communicating groove; 224. a sliding groove; 23. a cylinder; 24. a limiting rod; 241. a wedge-shaped surface; 25. a push rod; 3. a centering mechanism; 31. positioning blocks; 311. a limiting groove; 32. a guide block; 321. a glass fiber reinforced plastic coating; 33. a connecting rod; 34. a fixed block; 35. a guide block; 36. a guide rod; 37. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

A pipe ring rigidity detection device is shown in figure 1 and comprises a rack 1, wherein the rack 1 is connected with a detection mechanism 2, the detection mechanism 2 comprises an upper pressing plate 21, a lower pressing plate 22 and a cylinder 23 for driving the upper pressing plate 21 to move up and down, the lower pressing plate 22 is fixed with the rack 1 through bolts, a cylinder body of the cylinder 23 is fixed at the upper end of the rack 1 through bolts, and a piston rod of the cylinder penetrates through the rack 1 and is fixed with the upper pressing plate 21 through bolts. The lower press plate 22 is connected with a centering mechanism 3 for limiting the position of the sample, and the centering mechanism 3 comprises two rectangular positioning blocks 31. Two rectangular positioning grooves 221 are formed in the upper end of the lower pressing plate 22, the two positioning grooves 221 are located on two sides of the axis of the air cylinder 23 respectively, and the extension lines of the two positioning grooves intersect with the axis of the air cylinder 23. The two positioning blocks 31 are respectively located in the positioning groove 221, one ends of the two positioning blocks, which are close to each other, are hinged to the side wall of the positioning groove 221, the hinge axes of the two positioning blocks are horizontally arranged, the distances between the hinge axes of the two positioning blocks and the axis of the cylinder 23 are equal, and when the positioning blocks 31 are in a horizontal state, the upper end surfaces of the positioning blocks and the upper end surfaces of the lower pressing plates 22 are located on the same plane. After placing the sample on holding down plate 22, upwards rotate the same angle respectively with two locating pieces 31, make two locating pieces 31 all can with the sample lateral wall butt, the axis of sample and the axis of cylinder 23 are crossing this moment, the reaction force that the sample that upper plate 21 received was applyed this moment is located the middle part of upper plate 21, makes the junction of upper plate 21 and cylinder 23 piston rod can not produce the deformation, upper plate 21 and holding down plate 22 can keep being parallel, thereby make the result of detection can not influenced.

As shown in fig. 2, since it is troublesome to rotate the positioning block 31 and detect the rotation angle thereof, the centering mechanism 3 further includes two guide blocks 32 connected to the lower press plate 22 and two connecting rods 33 connecting the guide blocks 32 to the positioning block 31. The bottom surfaces of the positioning grooves 221 are respectively provided with a guide groove 222 with a cross-shaped longitudinal section, the two side walls of the lower press plate 22 are penetrated through by the guide grooves 222, and the guide block 32 is arranged in the guide grooves 222 to slide. One end of the connecting rod 33 is hinged to the upper end face of the guide block 32, the other end of the connecting rod is hinged to the lower end face of the positioning block 31, and when the positioning block 31 is in a horizontal state, a hinge point of the positioning block 31 and the connecting rod 33 is located between a hinge point of the positioning block 31 and the positioning groove 221 and the guide block 32. After the positioning block 31 is rotated upward, the angle of rotation of the positioning block 31 is detected by measuring the distance moved by the guide block 32, thereby facilitating the measurement of the angle of rotation of the two positioning blocks 31.

As shown in fig. 3, when the centering mechanism 3 is used to define the position of the sample, the two positioning blocks 31 need to be rotated separately, and an error may occur in the rotation angle of the two positioning blocks 31. Therefore, the lower end of the lower pressing plate 22 is welded with a rectangular fixing block 34, the fixing block 34 is sleeved with a guide block 35, and the guide block 35 can slide up and down along the fixing block 34. Two opposite side surfaces of the guide block 35 are hinged with a guide rod 36, and the other end of the guide rod 36 is hinged with the lower end of one guide block 32. The bottom surfaces of the guide grooves 222 are provided with communication grooves 223, through which the guide rods 36 pass and slide in the communication grooves 223. The two positioning blocks 31 can be rotated simultaneously by the guide block 35 and the guide rod 36, and the rotation angles of the two positioning blocks 31 can be kept the same, so that the positioning effect of the centering mechanism 3 is more accurate.

As shown in fig. 3, when the centering mechanism 3 is used to position a sample, the positioning block 31 needs to be manually rotated upward, and the position of the positioning block 31 still needs to be manually limited when the upper platen 21 moves downward, so that the positioning block 31 abuts against the sidewall of the sample, and after the upper platen 21 and the lower platen 22 simultaneously clamp the sample, the positioning block 31 can be rotated into the positioning groove 221, which is troublesome in the positioning process. Therefore, the spring 37 is fitted to the fixed block 34, the upper end of the spring 37 abuts against the lower end of the lower platen 22, and the lower end of the spring 37 abuts against the upper end of the guide block 35. The spring 37 is used for applying downward elastic force to the guide block 35, so that the two positioning blocks 31 are driven to rotate upwards, manual positioning is not needed to rotate upwards, and the using process of the centering mechanism 3 is more convenient.

As shown in fig. 2, since only the upper pressing plate 21 and the lower pressing plate 22 can contact with the sample during the sample detection, the positioning block 31 needs to be manually rotated to a horizontal state against the elastic force of the spring 37, and the using process of the centering mechanism 3 is troublesome at this time. Therefore, the side wall of the lower press plate 22 not provided with the guide groove 222 is provided with two sliding grooves 224, and the sliding grooves 224 are respectively communicated with one positioning groove 221. All slide in the groove 224 and be connected with a gag lever post 24, locating piece 31 has all seted up spacing groove 311 near the lateral wall in groove 224 that slides, and the one end of gag lever post 24 can be inserted and arrange in spacing groove 311. The position of the positioning block 31 is limited by the limiting rod 24, and the position of the positioning block 31 does not need to be limited manually when a sample is detected, so that the detection process of the sample is more convenient.

As shown in fig. 2, when the position of the positioning block 31 is limited by using the two limiting rods 24, the two limiting rods 24 need to be inserted into the limiting grooves 311, and at this time, the two limiting rods 24 need to be moved twice, which increases the time required before detection and reduces the detection efficiency. Therefore, the pushing rod 25 is welded on the end face of the limiting rod far away from the positioning block 31, and the two limiting rods 24 can be moved simultaneously by using the pushing rod 25, so that the time spent on moving the limiting rods 24 is reduced, the time required by the preparation step before detection is reduced, and the sample detection efficiency is improved.

In order to facilitate the process of inserting the limiting rod 24 into the limiting groove 311, as shown in fig. 2, wedge surfaces 241 are disposed on the end surfaces of the limiting rod 24 close to the positioning block 31, and the areas of the limiting rod 24 facing the limiting groove 311 are reduced by the wedge surfaces 241, so that the limiting rod 24 is more easily inserted into the limiting groove 311.

In order to reduce the friction between the guide block 32 and the guide groove 222 and to facilitate the sliding process of the guide block 32, as shown in fig. 3, a glass fiber reinforced plastic coating 321 is disposed at a position where the guide block 32 contacts the guide groove 222, and the friction between the guide block 32 and the guide groove 222 is reduced by using the glass fiber reinforced plastic coating 321, so that the moving process of the guide block 32 is more labor-saving.

The working principle is as follows:

when detecting the sample, the pushing rod 25 moves towards the direction far away from the lower pressing plate 22, so that the limiting rod 24 is separated from the limiting groove, the positioning blocks 31 rotate upwards under the action of the elastic force exerted by the spring 37, then the sample is placed between the two positioning blocks 31, the starting cylinder 23 drives the upper pressing plate 21 to descend, the upper pressing plate 21 drives the sample to move towards the lower pressing plate 22, and the upper pressing plate 21 and the lower pressing plate 22 clamp the sample together. At this time, the guide block 35 is moved upward, so that the two positioning blocks 31 are rotated into the positioning groove 221, the push rod 25 is moved, the stopper is inserted into the limiting groove 311, and the ring stiffness of the sample can be detected.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a tubular product ring rigidity check out test set, includes frame (1), its characterized in that: the detection mechanism (2) is connected to the rack (1), the detection mechanism (2) comprises an upper pressing plate (21), a lower pressing plate (22) and a cylinder (23) for driving the upper pressing plate (21) to move up and down in parallel, the cylinder body of the cylinder (23) is fixedly connected with the rack (1), the piston rod of the cylinder (23) is fixedly connected with the upper pressing plate (21), and the lower pressing plate (22) is fixedly connected with the rack (1); lower plate (22) are connected with centering mechanism (3), centering mechanism (3) include two locating pieces (31), two constant head tanks (221) have been seted up to lower plate (22) upper end, two constant head tanks (221) are located the both sides of cylinder (23) axis respectively and the extension line between them all intersects with cylinder (23) axis, locating piece (31) are located constant head tank (221) respectively, two the one end that locating piece (31) are close to each other all articulates with constant head tank (221) lateral wall, two the one end that locating piece (31) kept away from each other can rotate from top to bottom.

2. The pipe ring stiffness detecting device according to claim 1, wherein: centering mechanism (3) still include two guide block (32) of being connected with holding down plate (22) and two connecting rods (33) of being connected guide block (32) and locating piece (31), guide way (222) have all been seted up to constant head tank (221) bottom surface, guide block (32) are put and are slided in guide way (222), the one end and the guide block (32) upper end of connecting rod (33) are articulated, the other end and the locating piece (31) lower extreme of connecting rod (33) are articulated.

3. The pipe ring stiffness detecting device according to claim 2, wherein: lower clamp plate (22) lower extreme fixedly connected with fixed block (34), guide block (35) have been cup jointed in fixed block (34), slide from top to bottom along fixed block (34) guide block (35), the relative both sides face of guide block (35) all articulates there is guide rod (36), the guide rod (36) other end is articulated with guide block (32) lower extreme respectively, intercommunication groove (223) have all been run through to guide groove (222) lower extreme, it removes in intercommunication groove (223) to place guide rod (36).

4. The pipe ring stiffness detecting device according to claim 3, wherein: fixed block (34) have cup jointed spring (37), the upper end and the holding down plate (22) lower extreme butt of spring (37), the lower extreme and guide block (35) upper end butt of spring (37), work as when locating piece (31) is in the horizontality, the pin joint of connecting rod (33) and locating piece (31) is located between pin joint and the guide block (32) of locating piece (31) and constant head tank (221).

5. The pipe ring stiffness detecting device according to claim 1, wherein: two sliding grooves (224) are formed in the side wall of the lower pressing plate (22), the sliding grooves (224) are communicated with the positioning groove (221) respectively, a limiting groove (311) is formed in the side wall, close to the sliding grooves (224), of the positioning block (31), the limiting rod (24) is connected to the sliding grooves (224) in a sliding mode, and the limiting rod (24) can be inserted into the limiting groove (311).

6. The pipe ring stiffness detecting device according to claim 5, wherein: the sliding groove (224) is perpendicular to the positioning groove (221), and the end faces, far away from the positioning block (31), of the limiting rods (24) are fixedly connected with a push rod (25) together.

7. The pipe ring stiffness detecting device according to claim 5, wherein: the end faces, close to the positioning blocks (31), of the limiting rods (24) are provided with wedge-shaped faces (241).

8. The pipe ring stiffness detecting device according to claim 2, wherein: and a glass fiber reinforced plastic coating (321) is arranged at the position where the guide block (32) is contacted with the guide groove (222).