CN221303034U

CN221303034U - Detection device and pipe production line

Info

Publication number: CN221303034U
Application number: CN202322853807.7U
Authority: CN
Inventors: 王键; 邵碧波; 王玉明; 赵永凯; 胡自豪
Original assignee: Shenzhen Woer Heat Shrinkable Material Co Ltd
Current assignee: Shenzhen Woer Heat Shrinkable Material Co Ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-07-09
Anticipated expiration: 2033-10-23

Abstract

The utility model discloses a detection device and a pipe production line, wherein the detection device comprises a supporting structure, a fixing structure, a force application structure and a detection structure. The fixed knot constructs and is equipped with places the chamber, places the chamber and is used for placing tubular product. The force application structure is connected to the fixed structure and is provided with a movable rod, and one end of the movable rod movably penetrates through the placing cavity and extends towards the pipe. The detection structure is connected to the fixed structure and is arranged adjacent to the force application structure, and the detection structure is used for detecting the moving distance of the movable rod. The force application structure drives the movable rod to move towards the pipe under the drive of gravity and presses the outer wall of the pipe to deform the pipe. The technical scheme of the utility model has the advantage of conveniently and accurately measuring the ring stiffness of the self-rolling pipe.

Description

Detection device and pipe production line

Technical Field

The utility model relates to the technical field of pipe production equipment, in particular to a detection device and a pipe production line.

Background

The self-rolling sleeve is a plastic sleeve sleeved on the wire harness, is different from other tubular structures, is usually a whole piece of fabric and is rolled into the tubular structure in a spiral mode, so that personnel can conveniently protect the wire harnesses formed by the arranged wires, and the self-rolling sleeve is also convenient to bend and deform in the position.

The prior device for detecting the ring stiffness of the pipe generally presses down a certain stroke on the pipe, then observes the pipe diameter deformation degree of the pipe, the pipe diameter of the self-rolling pipe can be freely changed, the compression deformation degree is large, and the prior detection device can not accurately detect the ring stiffness of the self-rolling pipe.

Disclosure of utility model

The utility model mainly aims to provide a detection device and a pipe production line, and aims to solve the problem that the ring stiffness of a self-rolling pipe is inconvenient to detect.

To achieve the above object, the present utility model provides a detection device, comprising:

a support structure;

The fixing structure is connected with the supporting structure and provided with a placing cavity, and the placing cavity is used for placing the pipe;

The force application structure is connected to the supporting structure and is provided with a movable rod, and one end of the movable rod movably penetrates through the placing cavity and extends towards the pipe;

The detection structure is connected with the supporting structure and is arranged adjacent to the force application structure, and the detection structure is used for detecting the moving distance of the movable rod;

The movable rod is driven by gravity to move towards the pipe, and the movable rod is pressed against the outer wall of the pipe to deform the pipe.

In one embodiment, the movable bar comprises:

The compression bar is connected to the supporting structure in a sliding manner, and one end of the compression bar extends to the placing cavity; and

The carrying disc is connected to one end, far away from the placing cavity, of the pressing rod.

In one embodiment, the movable bar is provided with a mark;

The detection structure comprises:

A carriage coupled to the support structure;

The first cursor is connected to the sliding frame in a sliding way and is used for marking the initial position of the movable rod; and

And the second cursor is connected with the sliding frame in a sliding way and is used for marking the final position of the movable rod.

In an embodiment, the first cursor and the second cursor are each provided with:

the first cursor or the second cursor is sleeved on the sliding frame through the sleeve hole; and

The locking hole is communicated with the sleeve hole and used for installing the locking piece.

In one embodiment, the securing structure comprises:

the fixed block is connected to the supporting structure; and

The movable block is movably connected with the fixed block, the movable block and the fixed block are enclosed to form a clamping groove, and the clamping groove is used for clamping the pipe.

In one embodiment, the fixed block includes:

a lower support block connected to the support structure; and

The guide post is connected to the lower supporting block;

The movable block includes:

The upper support block is connected to the guide post in a sliding manner, and the lower support block and the upper support block form a clamping groove; and

The driving piece is connected with the upper supporting block and drives the upper supporting block to slide so as to expand or shrink the clamping groove.

In one embodiment, the driving member includes:

The rotary rod seat is connected with the guide post and is arranged close to the upper supporting block; and

The rotary rod, one end spiral connection of rotary rod in the rotary rod seat, the other end with go up the supporting shoe and be connected.

In an embodiment, the lower support block and/or the upper support block is provided with an elastic member;

And/or the supporting structure is provided with a level indicator.

In an embodiment, the force application structure further comprises a linear bearing, the linear bearing is connected to the supporting structure, the linear bearing is provided with a sliding hole, and the sliding hole is located above the placing cavity; the movable rod is connected with the sliding hole in a sliding way, and one end of the movable rod extends to the placing cavity.

The utility model also provides a pipe production line, which comprises the following steps:

A production device that produces a sheet into a tube; and

Any one of the detection devices detects the ring stiffness of the pipe.

According to the technical scheme, the pipe is firstly fixed to the placing cavity of the fixed structure by adopting the detection device with the movable rod. The movable rod of the force application structure can move in the placing cavity, the movable rod presses the pipe under the driving of gravity to deform the outer wall of the pipe, and the ring stiffness of the pipe can be visually compared according to the gravity and the stroke of the movable rod. The device makes the ring rigidity of measuring the self-winding pipe simpler and more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model 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, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a detecting device according to the present utility model;

FIG. 2 is a side view of the detection device of the present utility model;

FIG. 3 is a schematic structural view of a force applying structure and a detecting structure of the detecting device of the present utility model;

FIG. 4 is a schematic view of the supporting structure of the detecting device according to the present utility model;

FIG. 5 is a schematic view of a fixing structure of the detecting device according to the present utility model;

Fig. 6 is a schematic structural view of a fixing structure of the detecting device according to another aspect of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that all directional indicators such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model is provided, and the detection device includes a support structure, a fixing structure 1, a force applying structure 2, and a detection structure 3. The fixed structure 1 is connected to the supporting structure and is provided with a placing cavity 101, and the placing cavity 101 is used for placing pipes. The force application structure 2 is connected to the supporting structure and is provided with a movable rod 23, and one end of the movable rod 23 movably penetrates through the placing cavity 101 and extends towards the pipe. The detecting structure 3 is connected to the supporting structure and disposed adjacent to the force applying structure 2, and the detecting structure 3 is used for detecting the moving distance of the movable rod 23. The force application structure 2 drives the movable rod 23 to move towards the pipe under the drive of gravity and presses the outer wall of the pipe to deform the pipe.

Specifically, the support structure includes a base 11 and a bracket 21. The fixing structure 1 is provided with a placing cavity 101, and the placing cavity 101 has the clamping or limiting function, so that the self-rolling pipe can be placed on the fixing structure 1, and the self-rolling pipe cannot generate pure displacement motion except deformation even if being pressed by the outside. The force application structure 2 is provided with a pressure generating part, namely a movable rod 23 on the force application structure 2, and the movable rod 23 can move to press the self-coiled pipe under the driving of gravity. The movable rod 23 applies force to the self-winding pipe from top to bottom, and the force application structure 2 is also connected above the fixed structure 1, so that the movable rod 23 can move up and down conveniently. The detection structure 3 can detect the stroke of a certain movement of the movable rod 23.

With the present embodiment, with the detection device with the movable rod 23, the tube is first fixed to the placement cavity 101 of the fixed structure 1. The movable rod 23 of the force application structure 2 can move in the placing cavity 101, the movable rod 23 presses the pipe under the driving of gravity to deform the outer wall of the pipe, and the ring stiffness of the pipe can be visually compared according to the gravity and the stroke of the movable rod 23. The device makes the ring rigidity of measuring the self-winding pipe simpler and more convenient.

Referring to fig. 1 to 6, an embodiment of the present utility model is provided, in which the force application structure 2 further includes a linear bearing 22. The linear bearing 22 is connected to the support structure, the linear bearing 22 being provided with a sliding hole located above the placement cavity 101. The movable rod 23 is slidably connected to the slide hole, and one end thereof extends to the placement chamber 101.

Specifically, the bracket 21 is composed of a square tube, a bracket body is formed above the fixed structure 1, a through hole is penetrated in the bracket 21, and a linear bearing 22 is installed at the through hole. The sliding hole of the linear bearing 22 is slidably connected with the movable rod 23. The movable rod 23 preferably has an integral number of international units of weight, or the weight is such that it applies an integral number of forces under the force of gravity, conveniently as a force application criterion.

Further, the movable rod 23 has a limit projection, and the travel of the movable rod 23 is limited by the linear bearing 22 so that the movable rod cannot slip off the linear bearing 22.

With this embodiment, the movable rod 23 is pulled up, and then the self-rolling tube is placed on the placement chamber 101. The movable rod 23 is then fixed in a position above the self-winding tube or just abutting the self-winding tube, in a first position. The movable rod 23 is abutted downwards against the self-rolling pipe under the gravity, and the outer wall of the self-rolling pipe is deformed due to the gravity born by the movable rod 23, so that the cross section of the self-rolling pipe is changed from a circular shape to an elliptical shape. When the force between the movable rod 23 and the self-rolling tube is balanced, the position of the movable rod 23 is the second position. The detecting structure 3 can detect the stroke between the first position and the second position, thereby judging the ring stiffness of the self-rolling pipe according to the stroke.

Referring to fig. 1 to 6, the present utility model proposes an embodiment, in which the movable rod 23 includes a pressing rod 231 and a carrying disc 233. The compression bar 231 is slidably connected to the support structure, and one end of the compression bar 231 extends to the placement cavity 101. The carrier plate 233 is connected to an end of the compression bar 231 remote from the placement cavity 101, and the carrier plate 233 is used for loading standard components.

Specifically, the compression bar 231 is a vertical straight bar and is slidably connected to the linear bearing 22, one end of the compression bar is located on one side of the linear bearing 22 and extends into the placement cavity 101, the other end of the compression bar extends to the other side of the linear bearing 22, and is located on the upper side of the linear bearing 22, and the end is connected to the carrier disc 233. The carrier tray 233 has a receiving area for receiving standard components.

Further, the total mass of the compression bar 231 and the carrier disc 233 is an integer, so that the calculation is convenient; the standard may be a weight or some other item having a standard weight.

With the present embodiment, if the degree of deformation of the self-rolling tube is small when the movable lever 23 applies force to the self-rolling tube. The pressure exerted by the movable bar 23 on the self-rolling tube can be increased by placing a weight on the carrier plate 233. Thereby obtaining more obvious deformation and being more beneficial to detecting the ring stiffness of the self-rolling pipe. Preferably, the movable rod 23 and a weight of an appropriate mass are used as standard force for detection. If the deformation is too large, the weight can be lightened, and if the deformation is too small, the weight can be increased, so that the detection range is larger.

In connection with fig. 1 to 6, an embodiment of the utility model is proposed, said movable bar 23 being provided with a marking. The detecting structure 3 slides the carriage 31, the first cursor 32 and the second cursor 33. The carriage 31 is connected to the support structure. The first cursor 32 is slidably connected to the carriage 31 for marking the initial position of the movable rod 23. The second cursor 33 is slidingly coupled to the carriage 31 for marking the final position of the movable bar 23.

Specifically, the movable bar 23 is colored with a height mark 232. The position of the movable lever 23 is determined by the mark 232. The carriage 31 and the pressing lever 231 are disposed in parallel. The first cursor 32 has a sheet-like structure and has a horizontal direction indication function, and the second cursor 33 also has a sheet-like structure and has a horizontal direction indication function. The first cursor 32 and the second cursor 33 are both slidingly coupled to the carriage 31, so as to indicate the position of the movable bar 23.

Further, the movable rod 23 is provided with an annular groove as a mark 232, and the sheet-shaped parts of the first cursor 32 and the second cursor 33 can be clamped into the annular groove to serve as a limit to improve the accuracy of measurement, and can also limit the displacement of the movable rod 23 so that the movable rod can be fixed at a position which does not interfere with the placement cavity 101 before force application.

Alternatively, a horizontal plane structure may be provided on the movable lever 23, the displacement of which in the vertical direction is measured by a distance sensor.

With this embodiment, the movable rod 23 is pulled up, and then the self-rolling tube is placed on the placement chamber 101. At this time, the movable rod 23 is fixed to a certain position above the self-winding pipe, or a position just abutting against the self-winding pipe is a first position, the first cursor 32 is slid so that the first cursor 32 is clamped into the position of the mark 232 of the movable rod 23, and the first cursor 32 is fixed after the mark 232. After the standard component is put into, the weight of the movable rod 23 is increased, the movable rod can downwards abut against the self-rolling pipe, and the outer wall of the self-rolling pipe deforms due to the gravity born by the movable rod 23. When the force between the movable rod 23 and the self-winding pipe is balanced, the position of the movable rod 23 is the second position, and the second cursor 33 is slid at the moment so that the second cursor 33 is clamped into the position of the mark 232 of the movable rod 23, and the second cursor 33 is fixed after the mark 232. The distance between the first cursor 32 and the second cursor 33 is detected, so that the loop rigidity of the self-rolling pipe is judged according to the stroke.

Referring to fig. 1 to 6, an embodiment of the present utility model is provided, in which the first cursor 32 and the second cursor 33 are provided with a socket and a locking hole. The first cursor 32 or the second cursor 33 is sleeved on the sliding frame 31 through a trepanning. The locking hole is communicated with the sleeve hole and is used for installing the locking piece.

Specifically, the first cursor 32 and the second cursor 33 each include a sheet-like structure and a tubular structure, which is sleeved on the carriage 31 through a trepanning of the tubular structure. The wall of the sleeve hole is also provided with a locking hole, the locking piece is a locking screw, and the sheet structure is fixed on the sliding frame 31 by matching the locking hole with the locking screw.

Further, the locking screw has a handle or butterfly handle to facilitate the loosening or locking of the first cursor 32 or the second cursor 33.

With this embodiment, when the first cursor 32 or the second cursor 33 needs to be slid, the locking screw is loosened to enable the sleeve hole to be in clearance fit with the sliding frame 31, and when the first cursor 32 or the second cursor 33 reaches the first position or the second position, the locking screw is tightened to fix the first cursor 32 or the second cursor 33.

Referring to fig. 1 to 6, the present utility model proposes an embodiment, in which the fixed structure 1 includes a fixed block 12 and a movable block 13. The fixed block 12 is attached to the support structure. The movable block 13 is movably connected with the fixed block 12, the movable block 13 and the fixed block 12 are enclosed to form a clamping groove 102, and the clamping groove 102 is used for clamping the pipe.

Specifically, the fixed block 12 is connected to the base 11, the movable block 13 is movably connected to the fixed block 12, and the movable block 13 and the fixed block 12 enclose a clamping groove 102.

Alternatively, the connection between the fixed block 12 and the movable block 13 may be a sliding connection or a rotating connection, so that the clamping groove 102 is reduced to clamp the pipe when the fixed block 12 and the movable block 13 are close, and the clamping groove 102 is enlarged to unclamp the pipe when the fixed block 12 or the movable block 13 is far away.

Optionally, the fixed block 12 and the movable block 13 may be provided with grooves adapted to the tubing, so that the tubing can be clamped more tightly when clamped, and the original shape of the tubing can be maintained as much as possible, so that the final detection result is prevented from being influenced by deformation of the tubing due to overlarge clamping force.

Further, the fixing structure 1 may include a pair of fixed blocks 12 and movable blocks 13, where the pair of fixed blocks 12 and movable blocks 13 form two clamping grooves 102, the two clamping grooves 102 respectively clamp two ends of the pipe, a platform is disposed between the two clamping grooves 102, and the two clamping grooves 102 and a bearing surface of the platform form a placing cavity 101. The fixed structure 1 may further include only one fixed block 12 and one movable block 13, which form one clamping groove 102 to clamp one end of the pipe, and the other end is limited only by a limiting block, and it is understood that the pressure applied by the movable rod 23 is downward, so that the limiting block only needs to limit the pipe and can not move left and right in the horizontal direction and move downward in the vertical direction, for example, a semicircular groove is designed for placing the pipe.

Through this embodiment, will be from the both ends centre gripping of reelpipe for when movable rod 23 is applied force to the reelpipe, the reelpipe can not produce the removal of roll or other off tracking, thereby can obtain more accurate measuring result. If the platform just bears the self-rolling pipe, the deformation of the self-rolling pipe is reflected in the change of the pipe type, and if the platform does not bear the self-rolling pipe, namely, the self-rolling pipe is in a suspension state, the deformation of the self-rolling pipe is reflected in the change of the pipe type and the disturbance degree of the whole self-rolling pipe. It will be appreciated that when the movable rod 23 is forced from the middle of the self-rolling tube, since the two ends of the self-rolling tube are clamped, the force is applied from the middle of the self-rolling tube to the lower the force applied by the movable rod 23, the smaller the degree of the lower the axial rigidity of the self-rolling tube, the smaller the variation of the tube shape, and the greater the ring rigidity of the self-rolling tube. Therefore, if the platform just bears the self-rolling tube, the ring rigidity can be measured (when the self-rolling tube with the platform support measures the ring rigidity, the tube shape change is more obvious than that of the self-rolling tube without the platform support), and if the platform does not bear the self-rolling tube, not only the ring rigidity of the self-rolling tube, but also the rigidity in the axial direction of the self-rolling tube can be measured. Both modes can be used for judging the rigidity of the self-rolling pipe and can be set according to requirements.

Referring to fig. 1 to 6, an embodiment of the present utility model is provided, in which the movable rod 23 or the carriage 31 is provided with a scale.

Specifically, the mark 232 of the movable lever 23 serves as the 0 point of the scale. Which extends up one scale line. Or a scale is provided on the carriage 31 along the length direction thereof.

Alternatively, if the initial position of the movable lever 23 is fixed. That is, when the fixing structure 1 is designed to detect different self-coiled pipes, the fixing structure 1 is abutted against the self-coiled pipes at the same height, only one vernier can be arranged, because the first position of the movable rod 23 is unchanged at the moment, and when the movable rod 23 is positioned at the first position, the vernier just indicates the 0 point of the graduated scale on the movable rod 23, and the graduated scale extends upwards. When the movable bar 23 is lowered, the cursor just indicates the height of the second position.

Through this embodiment, conveniently measure or judge the stroke of movable rod 23 through the scale, conveniently judge the ring rigidity of self-coiling pipe.

Referring to fig. 1 to 6, the present utility model proposes an embodiment, in which the fixing block 12 includes a lower supporting block 121 and a guide post 122. The lower support block 121 is connected to the support structure. The guide post 122 is connected to the lower support block 122. The movable block 13 includes an upper support block 131 and a driving member. The upper support block 131 is slidably connected to the guide post 122, and the lower support block 121 and the upper support block 131 form the clamping groove 102. The driving member is connected to the upper supporting block 131, and drives the upper supporting block 131 to slide so as to expand or contract the clamping groove.

Specifically, the two sides of the lower supporting block 121 are provided with the guide posts 122, the two sides of the upper supporting block 131 are provided with holes, and the upper supporting block 131 and the lower supporting block 121 are sleeved on the guide posts 122 in a sleeved mode, so that the upper supporting block 131 and the lower supporting block 121 are enclosed to form the clamping groove 102. The upper support block 131 is connected with a driving member, which can control the upper support block 131 and the lower support block 121 to approach or separate.

With this embodiment, the upper support block 131 is lifted up along the guide post 122, and the holding groove 102 is lifted up. Allowing the self-winding pipe to pass through the clamping groove 102 and then lowering the upper support block 131 and clamping the self-winding pipe together with the lower support block 121. When the self-rolling tube is clamped, the overlapped portion of the self-rolling tube is positioned below, i.e., abuts against the lower support block 121. So that the movable rod 23 cannot generate complete tubular deformation of the self-rolling tube due to the gap abutting against the self-rolling tube.

Referring to fig. 1 to 6, an embodiment of the present utility model is provided, in which the driving member includes a lever seat 132 and a lever 133. The rotary rod seat 132 is connected to the guide post 122 and disposed near the upper support block 131. One end of the rotary rod 133 is spirally connected to the rotary rod seat 132, and the other end is connected to the upper supporting block 131.

Specifically, the rotary rod seat 132 has a block structure, two sides of the rotary rod seat 132 are fixedly connected to the guide posts 122, the rotary rod seat 132, the two guide posts 122 and the lower support block 121 enclose a frame, and the upper support block 131 is slidably connected to the guide posts 122 so as to slide in the frame. A threaded hole is formed in the middle of the rotary rod seat 132, threads are formed in the circumferential surface of the rotary rod 133, the rotary rod 133 can move up and down through rotation by cooperation of the threaded hole and the threaded hole, one end of the rotary rod 133 is connected with the upper supporting block 131, and the upper supporting block 131 is driven to move up and down.

With the present embodiment, the upper supporting block 131 is driven to move up by twisting the rotating rod 133 to enlarge the clamping groove 102, and after the pipe is inserted into the clamping groove 102, the upper supporting block 131 is driven to move down by twisting the rotating rod 133 to reduce the clamping groove 102, thereby clamping the pipe.

Referring to fig. 1 to 6, an embodiment of the present utility model is provided, in which the lower support block 121 and/or the upper support block 131 are provided with elastic members. The support structure 11 is provided with a level indicator 111.

Specifically, the elastic piece is also provided with a groove which is adapted to the pipe shape of the self-rolling pipe. The base 11 is provided with a level indicator 111.

Further, the anti-slip lines are arranged in the grooves, so that when the self-rolling pipe is arranged in the grooves, the position of the movable rod 23 for pressing the self-rolling pipe can enable the two ends of the self-rolling pipe to be stable and motionless even if the position is offset a little. The four corners of the base 11 are provided with height-adjustable foot supports. The level indicator 111 is engaged to level the horizontal position of the base 11 so that the direction of movement of the movable bar 23 and the direction of gravity remain constant.

By this embodiment, the elastic member and the level indicator 111 are designed. Let movable rod 23 can be with accurate butt from the reelpipe of gravity direction, and from the reelpipe be difficult to produce the skew under the condition of pressurized, and then keep the deformation that the tubular produced, can not lead to the second position of movable rod 23 not original position because of the skew, lead to misjudgement from the ring rigidity of reelpipe.

The utility model also provides a pipe production line, which comprises a production device and a detection device, wherein the specific structure of the detection device refers to the embodiment, and the detection device adopts all the technical schemes of all the embodiments, so that the detection device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted. Wherein the production device produces the sheet into a pipe. The detection device detects the ring stiffness of the pipe.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A detection device for detecting the ring stiffness of a pipe, the detection device comprising:

a support structure;

2. The detection apparatus according to claim 1, wherein the movable lever includes:

3. The detection device according to claim 1, wherein the movable rod is provided with a marker;

The detection structure comprises:

the sliding frame is connected to the supporting structure;

4. A detection device according to claim 3, wherein the first cursor and the second cursor are each provided with:

5. The detection apparatus according to any one of claims 1 to 4, wherein the fixing structure includes:

the fixed block is connected to the supporting structure; and

6. The apparatus according to claim 5, wherein the fixed block comprises:

a lower support block connected to the support structure; and

The guide post is connected to the lower supporting block;

The movable block includes:

The upper support block is connected to the guide post in a sliding manner, and the lower support block and the upper support block form the clamping groove; and

7. The detection apparatus according to claim 6, wherein the driving member includes:

8. The device according to claim 7, wherein the lower support block and/or the upper support block is provided with an elastic member;

And/or the supporting structure is provided with a level indicator.

9. The device according to claim 1, wherein the force application structure further comprises a linear bearing connected to the support structure, the linear bearing being provided with a sliding hole, the sliding hole being located above the placement cavity; the movable rod is connected with the sliding hole in a sliding way, and one end of the movable rod extends to the placing cavity.

10. A pipe production line, characterized in that it comprises:

A production device that produces a sheet into a tube; and

The detection device according to any one of claims 1 to 9, which detects the ring stiffness of the pipe.