CN215845998U

CN215845998U - Beveling machine

Info

Publication number: CN215845998U
Application number: CN202121595892.6U
Authority: CN
Inventors: 孙丽; 尚君辉; 郝敏; 刘照志
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-18
Anticipated expiration: 2031-07-14

Abstract

The disclosure relates to the technical field of pipeline groove machining, in particular to a groove machine. The beveling machine comprises: the tensioning assembly comprises a tensioning oil cylinder and a tensioning device, and the tensioning oil cylinder is in driving connection with the tensioning device so as to drive the tensioning device to be in contact with the inner wall of the pipeline when extending out, so as to tension the pipeline; and the monitoring device is coupled with the tensioning oil cylinder and is used for detecting the extension displacement b and the applied thrust F of the tensioning oil cylinder₁And based on the detected extension displacement b and the thrust force F₁Determining the tension force T of the tension component acting on the inner wall of the pipeline₁. Based on this, the groove machine can be reducedThe risk of pipeline damage is caused by excessive tension force.

Description

Beveling machine

Technical Field

The disclosure relates to the technical field of pipeline groove machining, in particular to a groove machine.

Background

The beveling machine is special equipment for beveling a pipeline before welding the pipeline, and in the working process, the beveling machine is in contact with the inner wall of the pipeline through a tensioning assembly to achieve tensioning and positioning.

In the related art, the beveling machine does not monitor the applied tension force, and the pipeline is often damaged due to the fact that the tension force is too large.

Disclosure of Invention

One technical problem to be solved by the present disclosure is: the risk that the beveling machine damages the pipeline due to the fact that the applied tension force is too large is reduced.

In order to solve the technical problem, the present disclosure provides a beveling machine, which includes:

the tensioning assembly comprises a tensioning oil cylinder and a tensioning device, and the tensioning oil cylinder is in driving connection with the tensioning device so as to drive the tensioning device to be in contact with the inner wall of the pipeline when extending out, so as to tension the pipeline; and

the monitoring device is coupled with the tensioning oil cylinder and is used for detecting the extension displacement b and the applied thrust F of the tensioning oil cylinder₁And based on the detected extension displacement b and the thrust force F₁Determining the tension force T of the tension component acting on the inner wall of the pipeline₁。

In some embodiments, the monitoring device comprises:

the oil pressure sensor is used for detecting the oil pressure in the tensioning oil cylinder, and the monitoring device determines the thrust F according to the detection result of the oil pressure sensor₁(ii) a And/or the presence of a gas in the gas,

and a displacement sensor for detecting the extension displacement b.

In some embodiments, the displacement sensor is a pull wire displacement sensor, and a pull wire of the pull wire displacement sensor is connected with the tensioning oil cylinder.

In some embodiments, the tensioning device comprises a push rod, a first end of the push rod is connected with the tensioning cylinder, and a pull wire of the pull wire displacement sensor is connected with a second end of the push rod.

In some embodiments, the monitoring device includes a guide rod, and the pull wire of the pull wire displacement sensor is connected to the second end of the push rod through the guide rod.

In some embodiments, the tensioning device packageThe tension monitoring device comprises a connecting disc, a connecting rod and a radial moving mechanism, wherein a tension oil cylinder is in driving connection with the connecting disc so as to drive the connecting disc to axially move, a first end and a second end of the connecting rod are respectively hinged with the connecting disc and the radial moving mechanism so as to drive the radial moving mechanism to radially move when the connecting disc axially moves, and the monitoring device determines tension force T based on the following formula₁：

Wherein A is the length of the connecting rod, L₀The distance between the first end of the connecting rod and the radial moving mechanism in the stretching direction of the stretching oil cylinder when the stretching starts.

In some embodiments, the beveling machine comprises a display in signal connection with the monitoring device for displaying the tension force T determined by the monitoring device₁。

In some embodiments, the tensioning device comprises:

the tensioning block is provided with a working surface, and the working surface is the surface of the tensioning block facing the inner wall of the pipeline; and

the elastic pad is arranged on the working surface of the tensioning block, so that the tensioning block is in contact with the inner wall of the pipeline through the elastic pad.

In some embodiments, the working surface is provided with a boss, and the elastic pad is provided with a groove, wherein the boss is embedded in the groove.

In some embodiments, the elastic pad comprises a first portion, a second portion and a third portion, the first portion covers the working surface, the second portion and the third portion are connected to two opposite ends of the first portion and are bent by the first portion in a direction opposite to the protruding direction of the boss, and the elastic pad is detachably connected with the tensioning block through the second portion and the third portion.

Due to the arranged monitoring device, the tension force T applied to the tension assembly can be exerted₁Monitoring is carried out, so that the risk of pipeline damage caused by overlarge tension force applied to the beveling machine is favorably reduced.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the beveling machine in the embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a tensioning mechanism in an embodiment of the disclosure.

Fig. 3 is a schematic view of a combined structure of the tensioning block and the elastic pad in the embodiment of the disclosure.

Fig. 4 is a schematic structural diagram of a tensioning block in an embodiment of the disclosure.

Fig. 5 is a schematic structural diagram of an elastic pad according to an embodiment of the disclosure.

Fig. 6 is a schematic view of the arrangement of the tension block and the elastic pad on the tension disc in the embodiment of the disclosure.

Fig. 7 is a mechanical model diagram of the tensioning assembly at the beginning of tensioning.

Fig. 8 is a mechanical model diagram of the tensioning assembly when tensioning is completed.

Fig. 9 is a schematic control diagram according to an embodiment of the disclosure.

Description of reference numerals:

100. a beveling machine; 10. a tensioning mechanism; 101. a connecting cylinder; 102. a tensioning assembly; 103. a tensioning device; 104. a radial movement mechanism; 20. a cutting mechanism; 201. a main shaft; 202. a cutting disk; 30. a feed mechanism; 40. a monitoring device; 401. a guide bar; 402. a displacement sensor; 403. an oil pressure sensor; 404. a controller; 405. a pull wire displacement sensor; 50. a display;

1. a tensioning block; 11. a working surface; 12. a boss; 13. a bevel; 15. a threaded hole;

2. an elastic pad; 21. a first portion; 22. a second portion; 23. a third portion; 24. a groove; 25. connecting holes;

3. a tensioning oil cylinder;

4. a push rod;

5. a connecting disc;

6. a connecting rod;

7. a tensioning disc;

8. a top rod;

91. a bolt; 92. a first gasket; 93. a second gasket;

x, a first direction; y, second direction.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without any inventive step, are intended to be within the scope of the present disclosure.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are presented only for the convenience of describing and simplifying the disclosure, and in the absence of a contrary indication, these directional terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present disclosure.

In addition, technical features involved in different embodiments of the present disclosure described below may be combined with each other as long as they do not conflict with each other.

In the pipeline construction of the industries such as petroleum and chemical engineering, the pipelines are often welded by adopting a single-side welding double-side forming or inner welding machine root welding process, and before welding, a groove is usually required to be processed on the pipelines.

The beveling machine is a special device for beveling a pipeline before welding, belongs to a movable small-sized numerical control machining center and is mainly used for field construction.

Fig. 1 and fig. 2 show the structures of the beveling machine and the tensioning mechanism thereof in the embodiment of the disclosure.

For ease of understanding, the basic structure of the beveling machine will be described first with reference to fig. 1.

Referring to fig. 1, beveling machine 100 generally includes a tensioning mechanism 10, a cutting mechanism 20, and a feeding mechanism 30.

The cutting mechanism 20 is used for cutting a pipe to form a groove, and includes a spindle 201 and a cutting disc 202, the cutting disc 202 is sleeved outside the spindle 201, and a cutting knife (not shown) is disposed on the cutting disc 202, and the cutting mechanism 20 cuts the pipe by the cutting knife to obtain the groove. The axial, radial and circumferential directions of the main shaft 201 coincide with the axial, radial and axial directions of the pipe, respectively.

The feeding mechanism 30 is in driving connection with the cutting mechanism 20 for realizing the feeding of the cutting mechanism 20 so as to enable the cutting mechanism 20 to reach a proper cutting position.

The tensioning mechanism 10 is located on one axial side of the spindle 201, is connected to one end of the spindle 201, which is far away from the feeding mechanism 30, and is used for tensioning and positioning the pipeline, so as to realize firm contact between the beveling machine 100 and the pipeline, and facilitate the cutting of the pipeline by the cutting mechanism 20.

When the beveling of the pipeline needs to be cut, the beveling machine 100 is firstly placed inside the pipeline, then the pipeline is tensioned by the tensioning mechanism 10, and the cutting mechanism 20 is used for cutting to obtain the beveling. It can be seen that the tensioning mechanism 10 is an important component of the beveling machine 100.

Next, the basic structure of the tension mechanism 10 will be described with reference to fig. 1 to 2.

Referring to fig. 1, the tensioning mechanism 10 includes a connecting cylinder 101 and a tensioning assembly 102. The connecting cylinder 101 is connected to an end of the main shaft 201 remote from the feed mechanism 30, and has a hollow interior with a central axis collinear with a central axis of the main shaft 201. The tensioning assembly 102 is disposed at an axial end of the connecting cylinder 101. As shown in fig. 1, in some embodiments, the tensioning mechanism 10 includes two tensioning assemblies 102, and the two tensioning assemblies 102 are disposed at two axial ends of the connecting cylinder 101. The tensioning assembly 102 comprises a tensioning oil cylinder 3 and a tensioning device 103, and the tensioning device 103 comprises a push rod 4, a connecting disc 5, a connecting rod 6, a tensioning disc 7 and a radial moving mechanism 104.

The tensioning oil cylinder 3 is arranged inside the connecting cylinder 101 and is in driving connection with the tensioning device 103, so that when the tensioning oil cylinder extends out, the tensioning device 103 is driven to contact with the inner wall of the pipeline to tension the pipeline. Specifically, the expansion direction of the tensioning cylinder 3 is along the axial direction of the connecting cylinder 101 and the main shaft 201, and the output end (i.e. the end of the cylinder rod of the tensioning cylinder 3, that is, the end of the tensioning cylinder 3 located outside the cylinder barrel) of the tensioning cylinder 3 is connected to the push rod 4, so that when the tensioning cylinder 3 expands and contracts, the push rod 4 can be driven to move along the axial direction of the connecting cylinder 101 and the main shaft 201. It will be understood that the axial movement along the connecting cylinder 101 and the main shaft 201 is also the axial movement along the pipe, and may be referred to as axial movement hereinafter.

The push rod 4 penetrates through the connecting disc 5 and the tensioning disc 7 and is fixedly connected with the connecting disc 5, so that the connecting disc 5 can be driven to axially move when the push rod 4 axially moves. One end of the push rod 4 connected with the tensioning oil cylinder 3 is called as a first end of the push rod 4. The other end of the push rod 4 opposite to the first end is referred to as a second end of the push rod 4.

The connecting disc 5 is arranged on the push rod 4, and the central axis is collinear with the central axes of the connecting cylinder 101 and the main shaft 201, in other words, the axial direction, the radial direction and the circumferential direction of the connecting disc 5 are consistent with the axial direction, the radial direction and the circumferential direction of the connecting cylinder 101, the main shaft 201 and the pipeline.

The tension disc 7 is arranged at the axial end part of the connecting cylinder 101, and the central axis is collinear with the central axes of the connecting cylinder 101 and the main shaft 201, in other words, the axial direction, the radial direction and the circumferential direction of the connecting disc 5 are consistent with the axial direction, the radial direction and the circumferential direction of the connecting cylinder 101, the main shaft 201 and the pipeline. The tensioning disc 7 is provided with a plurality of openings which are arranged at intervals along the circumferential direction. One radial movement mechanism 104 is disposed in each opening. The radial moving mechanism 104 can move along the radial direction of the tension disc 7 (i.e. can move along the radial direction of the pipeline, and may be simply referred to as radial moving), and comprises a push rod 8 and a tension block 1. The push rod 8 extends along the radial direction of the tension disc 7, so that the push rod 8 can move along the radial direction of the tension disc 7. The first end of each ejector rod 8 is provided with a tensioning block 1, so that the ejector rods 8 can drive the tensioning blocks 1 to move together along the radial direction. The tensioning block 1 is a part of the tensioning mechanism 10 for contacting the inner wall of the pipeline, or the tensioning mechanism 10 contacts the inner wall of the pipeline through the tensioning block 1. The second end of each ejector rod 8 is hinged to one connecting rod 6, and meanwhile, the other end of each connecting rod 6 is hinged to the connecting disc 5, so that the first end and the second end of each connecting rod 6 are hinged to the connecting disc 5 and the radial moving mechanism 104 respectively, at the moment, the connecting rods 6 can drive the radial moving mechanisms 104 to move radially when the connecting discs 5 move axially, radial movement of the ejector rods 8 and the tensioning blocks 1 is achieved, the tensioning blocks 1 can move towards the inner wall of the pipeline until being abutted against the inner wall of the pipeline, and tensioning of the pipeline is completed.

Based on the arrangement, when the tensioning oil cylinder 3 stretches, the push rod 4 can be pushed and pulled to drive the connecting disc 5 to axially move, so that the connecting rod 6 swings, the push rod 8 is pushed to radially move, the tensioning block 1 is driven to radially move, and the tensioning block 1 radially extends out or retracts to be in contact with or not in contact with the inner wall of the pipeline. When the tensioning oil cylinder 3 extends out, the tensioning block 1 extends out along the radial direction, the tensioning block 1 can be in contact with the inner wall of the pipeline to tension the pipeline, and the beveling machine 100 is in firm contact with the pipeline so as to stably cut the pipeline.

In the process, the push rod 4, the connecting disc 5, the connecting rod 6, the tensioning disc 7 and the ejector rod 8 can convert the telescopic motion of the tensioning oil cylinder 3 into the radial movement of the tensioning block 1, so that the conversion from small axial force to large radial force is realized.

When the tensioning cylinder 3 extends to the right position, tensioning is completed, and at this time, the sum of the pressures applied to the inner wall of the pipeline by all the radial moving mechanisms 104 (specifically, the tensioning blocks 1) of the tensioning device 103 is the tensioning force T of the tensioning assembly 102 acting on the inner wall of the pipeline₁. Tension force T₁If too large, the pipeline is easily damaged. In particular, the inner walls of some pipelines (such as oil and gas pipelines) are provided with anticorrosive coatings and tension force T₁When the size of the pipeline is too large, the anticorrosive coating is easily damaged, so that the anticorrosive failure is caused, the service life and the normal use of the pipeline are influenced, and even safety accidents can be caused.

In the related art, the beveling machine does not have a tension force monitoring function, the controllability of the tension force is poor, and quantitative display cannot be performed, so that an over-tension phenomenon often occurs in the tension process, and the pipeline is damaged due to the over-tension.

In view of the above situation, the embodiment of the present disclosure analyzes the working principle of the tensioning assembly 102, and improves the structure of the beveling machine 100 based on the analysis result, so that the beveling machine 100 has a tensioning force monitoring function, so as to reduce the risk of pipeline damage caused by an excessive tensioning force.

First, based on the tensioning principle of the tensioning assembly 102, a mechanical model as shown in fig. 7 and 8 is established without considering friction force, dead weight and the like.

As can be known from the working principle of the tensioning assembly 102, during the tensioning process, the first end of the connecting rod 6 moves axially along with the output end of the tensioning cylinder 3, the second end of the connecting rod 6 moves radially along with the radial moving mechanism 104, and the length of the connecting rod 6 remains unchanged and is always a, so that the right-angled triangle mechanical model shown in fig. 7 and 8 is abstracted, where fig. 7 is a mechanical model diagram of the tensioning assembly at the beginning of tensioning, and fig. 8 is a mechanical model diagram of the tensioning assembly at the completion of tensioning. It can be understood that, at the beginning of tensioning, the tensioning oil cylinder 3 does not extend, the tensioning block 1 does not contact with the inner wall of the pipeline, and the thrust force applied by the tensioning oil cylinder 3F₀And the pressure T applied by the tensioning device 103 to the pipeline₀(i.e., the tension force applied by the tension assembly 102) can be considered to be 0; when the tensioning is finished, the tensioning oil cylinder 3 extends in place, the tensioning block 1 is in contact with the inner wall of the pipeline, and the thrust applied by the tensioning oil cylinder 3 and the pressure applied by the tensioning device 103 to the pipeline are respectively counted as F₁And T₁。

In fig. 7 and 8, from the structural size perspective, the hypotenuse of the right triangle corresponds to the length a of the connecting rod 6, and the axial cathetus of the right triangle corresponds to the axial distance between the first end of the connecting rod 6 and the radial movement mechanism 104 (i.e. the axial distance between the first end and the second end of the connecting rod 6), which is respectively counted as L at the beginning and the end of tensioning₀And L₁The included angle between the hypotenuse and the axial cathetus of the right triangle is alpha at the beginning and the end of the tension respectively₀And alpha₁. Wherein, as shown in fig. 8, if the extension displacement of the tensioning cylinder 3 from the beginning of tensioning to the completion of tensioning is b, L is₁＝L₀-b。

Meanwhile, from the stress perspective, in fig. 8, the axial right-angle side of the right triangle corresponds to the acting force applied to the first end of the single connecting rod 6 when tensioning is completed, and the acting force is the thrust F applied by the tensioning cylinder 3₁Is/are as follows

Is that

The radial sides of the right triangle correspond to the pressure applied to the pipeline by the single radial moving mechanism 104 when the tensioning is completed, and the tensioning force T applied by the tensioning assembly 102₁Is/are as follows

Is that

Wherein N is the number of the radial moving mechanisms 104 in the tensioning device 103.

Therefore, it is not only easy to useAs can be seen from the geometric relationship of fig. 8,

thus, the tension force T exerted by the tension assembly 102₁The calculation formula of (2) is as follows:

wherein, A is the length of the connecting rod 6; l is₀The distance between the first end of the connecting rod 6 and the radial moving mechanism 104 in the stretching direction of the stretching oil cylinder 3 when the stretching starts; b is the extended displacement of the tensioning oil cylinder 3 from the beginning of tensioning to the completion of tensioning; f₁The thrust applied by the tensioning oil cylinder 3 when tensioning is finished.

Since in the above formula (1), A and L₀All belong to structural parameters and can be predetermined, therefore, the tension force T is calculated based on the formula (1)₁When only b and F need to be determined₁The size of these two variables.

According to the analysis result, referring to fig. 1 and fig. 9, in the beveling machine 100 according to the embodiment of the present disclosure, a monitoring device 40 is provided, and the monitoring device 40 is coupled with the tensioning cylinder 3 and is used for detecting the extension displacement b and the applied thrust force F of the tensioning cylinder 3₁And based on the detected extension displacement b and the thrust force F₁Determining the tension force T of the tension assembly 102 acting on the inner wall of the pipeline₁。

Because the monitoring device 40 has the tensioning cylinder extension displacement detection function and the tensioning cylinder thrust detection function, the extension displacement b and the applied thrust F of the tensioning cylinder 3 can be detected₁Thus, the measured extension displacement b and the thrust force F are measured₁Substituting into the above formula (1) to obtain the tension force T₁Realize the tension force T₁And (4) determining.

It can be seen that based on the monitoring device 40, the beveling machine 100 has a tension force monitoring function, so that the tension force T is prevented from occurring conveniently₁Too large to reduce the corrosion resistance of the pipeline and the upper anticorrosive coatingThe tension force is too large and the tension is damaged.

In order to provide the monitoring device 40 with the function of detecting the extending displacement of the tension oil rod, referring to fig. 1, in some embodiments, the monitoring device 40 includes a displacement sensor 402, and the displacement sensor 402 is used for detecting the extending displacement b. As an example, referring to fig. 1-2 and fig. 9, in some embodiments, the displacement sensor 402 is a pull wire displacement sensor 405, and a pull wire of the pull wire displacement sensor 405 is connected to the tensioning cylinder 3. Specifically, as shown in fig. 1, the pull wire of the pull wire displacement sensor 405 is connected to the second end of the push rod 4. More specifically, as shown in fig. 1, the monitoring device 40 includes a guide rod 401, and the pull wire of the pull wire displacement sensor 405 is connected to the second end of the push rod 4 through the guide rod 401.

Based on the displacement sensor 402, the extension displacement b of the tensioning cylinder 3 can be conveniently detected, and the extension displacement detection function of the tensioning oil rod of the monitoring device 40 is realized. Particularly, when the displacement sensor 402 is the pull wire displacement sensor 405, the pull wire displacement sensor 405 (also called a pull wire displacement sensor) is a linear displacement sensor with compact structure, large measurement range and high precision, so that the accurate detection of the extension displacement b of the tensioning cylinder 3 is more conveniently realized, and the installation on the beveling machine 100 is more suitable.

And further set up guide arm 401 and realize acting as go-between displacement sensor 405 and the coupling between the tight hydro-cylinder 3 that rises, the benefit lies in, is convenient for install the displacement sensor 405 that acts as go-between in the outside of main shaft 201, conveniently carries out dismouting maintenance to the displacement sensor 405 that acts as go-between. Under the condition that the guide rod 401 is not arranged, the length of a pull wire is influenced, the displacement sensor 402 adopting the pull wire displacement sensor 405 needs to be arranged inside the main shaft 201, and the pull wire can be connected to the second end of the push rod 4. As shown in fig. 1, under the condition that the guide rod 401 is provided, the guide rod 401 may be disposed inside the main shaft 201, one end of the guide rod 401 is connected to the second end of the push rod 4, and the other end of the guide rod 401 extends to a position close to the main shaft 201 and near the end far away from the tensioning cylinder 3, at this time, the displacement sensor 402 using the pull wire displacement sensor 405 is no longer limited to be disposed inside the main shaft 201, but may be disposed outside the main shaft 201. Meanwhile, the guide rod 401 can guide the extending direction of the stay wire in the tensioning process, so that the coaxiality of the stay wire and the tensioning oil cylinder 3 is improved, and the detection accuracy is improved.

In addition, in order to provide the monitoring device 40 with the tension cylinder thrust detection function, referring to fig. 9, in some embodiments, the monitoring device 40 includes an oil pressure sensor 403, the oil pressure sensor 403 is used for detecting the oil pressure in the tension cylinder 3, and the monitoring device 40 determines the thrust force F according to the detection result of the oil pressure sensor 403₁. Therefore, the thrust F applied to the tensioning oil cylinder 3 can be conveniently realized by monitoring the oil pressure of the tensioning oil cylinder 3₁The detection of (2) realizes the thrust detection function of the tensioning cylinder of the monitoring device 40.

In the foregoing embodiments, referring to fig. 9, the thrust force F is determined based on the measured oil pressure₁And on the basis of the measured extension displacement b and thrust force F₁To determine the tension force T₁May be performed by the controller 404 of the beveling machine 100. During operation, the displacement sensor 402 and the hydraulic pressure sensor 403 both transmit the detection results to the controller 404, and the controller 404 transmits the detection results to the controller 404 according to the hydraulic pressure and the thrust force F₁The tension force T is obtained by calculation according to the relation between the tension force T and the formula (1)₁Realize the tension force T₁And (4) determining.

The controller 404 may include a memory and a processor coupled to the memory, the processor configured to perform the fan speed control methods of the embodiments based on instructions stored in the memory.

The memory may be a high-speed RAM memory or a non-volatile memory (non-volatile memory), for example. The memory may also be a memory array. The storage may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor may be a central processing unit CPU, or an application Specific Integrated circuit asic, or one or more Integrated circuits configured to implement the control method of the vehicle of the embodiments.

In addition, in each of the above embodiments, the determined tension force T is convenient for the worker to know in time₁Size and action accordingly, referring to fig. 9, beveling machine 100 may further include display 50. The display 50 is in signal connection with the monitoring device 40 and is used for displaying the tensioning force T determined by the monitoring device 40₁. Specifically, as shown in fig. 9, the display 50 is electrically connected to the controller 404 to realize signal connection with the monitoring device 40, so that when the controller 404 calculates the tension force T₁The calculation result may be transmitted to the display 50 and displayed by the display 50.

Because the display 50 can realize the visual display of the magnitude of the tension force, the operation can be observed by the staff conveniently, the staff can know whether the tension force is too large in time and take measures in time when the tension force is too large, and therefore, the pipeline damage caused by the too large tension force can be prevented more effectively.

It can be seen that, based on the foregoing embodiments, the beveling machine 100 of the present disclosure has a tension monitoring function, has the characteristics of strong tension controllability and digital display, is beneficial to preventing an excessive tension, reduces the risk of pipeline damage caused by an excessive tension applied to the beveling machine 100, and particularly can reduce the damage of the excessive tension to the anticorrosive coating on the inner wall of the pipeline.

In addition, the pipeline and the upper anticorrosive coating thereof can be damaged due to overlarge tension force and also can be damaged due to collision of the tension block 1.

In the related art, the tensioning block 1 is generally in direct contact with the inner wall of the pipeline. Because the tensioning block 1 is generally a steel structural member, the hardness is high, and the tensioning force is generally high, the tensioning block 1 directly contacts with the inner wall of the pipeline, so that the inner wall of the pipeline is easily collided, and the pipeline and the anticorrosive coating on the pipeline are damaged.

Aiming at the above situation, the embodiment of the present disclosure further improves the structure of the tensioning device 103 to reduce the risk of pipeline damage caused by the collision of the tensioning block 1.

Fig. 1-6 schematically illustrate the construction of beveling machine 100 of the present disclosure.

Referring to fig. 1 to 6, in some embodiments of the present disclosure, the tensioning device 103 includes not only the tensioning block 1 but also the elastic pad 2 (e.g., a rubber pad), in this case, the radial moving mechanism 104 includes not only the ram 8 and the tensioning block 1 but also the elastic pad 2. The elastic pad 2 is arranged on the working surface 11 of the tensioning block 1, so that the tensioning block 1 is in contact with the inner wall of the pipeline through the elastic pad 2. Wherein, the working surface 11 of the tensioning block 1 is the surface of the tensioning block 1 facing the inner wall of the pipeline. It will be understood that the working surface 11 is also the surface of the tensioning block 1 facing away from the center of the tensioning assembly (i.e. the center of the tensioning disc 7) and is also the surface of the tensioning block 1 located radially outside the pipe.

Through set up the cushion 2 on tight piece 1 that rises for tight piece 1 no longer directly contacts with the pipeline inner wall, but can contact with the pipeline inner wall through cushion 2. Because different from the tensioning block 1, the elastic pad 2 has smaller hardness, elasticity and deformation, so that the collision to the inner wall of the pipeline can be reduced, the risk of damage to the inner wall of the pipeline caused by the collision of the tensioning block 1 is reduced, the damage to the inner wall of the pipeline by the beveling machine 100 can be reduced, and particularly the damage to an anticorrosive coating on the inner wall of the pipeline by the tensioning mechanism 10 can be reduced.

In order to further reduce damage to the inner wall of the pipe, referring to fig. 3-5, in some embodiments, the working surface 11 is provided with a boss 12, and the elastic pad 2 covers the boss 12. As shown in fig. 4, the boss 12 protrudes outward from the working surface 11 (i.e., away from the center of the tension disk 7), and extends along the first direction X from one end of the working surface 11 to the other end of the working surface 11. The first direction X is a direction along the axial direction of the pipe, that is, the first direction X is along the axial direction of the pipe, that is, along the axial direction of the tension disc 7.

Based on the above arrangement, when the pipeline is tensioned, the surface of the elastic pad 2 facing the inner wall of the pipeline is not contacted with the inner wall of the pipeline integrally, but only covers the part of the boss 12 supported by the boss 12 to be contacted with the pipeline, and because the contact area of the elastic pad 2 and the inner wall of the pipeline is reduced, the collision damage to the inner wall of the pipeline and the anticorrosive coating on the inner wall is reduced.

Wherein the shape of the boss 12 is not limited. As an example, as shown in fig. 4, the surface of the boss 12 is curved. In this case, the portion of the elastic pad 2 covering the boss 12 may also be arc-shaped, which conforms to the arc shape of the inner wall of the pipeline, so as to be in tight contact with the inner wall of the pipeline, and achieve a better tensioning effect.

Meanwhile, the number of the bosses 12 is not limited, and may be one, two or more. When the boss 12 quantity is at least two, the cushion 2 can all contact with the pipeline inner wall in each boss 12 department, and the contact point increases, is favorable to realizing more steady tight effect of rising. For example, referring to fig. 3 and 4, in some embodiments, two bosses 12 are provided on the working surface 11, and the two bosses 12 are spaced apart in the second direction Y. Wherein the second direction Y is parallel to the working surface 11 and perpendicular to the axial direction of the pipe, that is to say, the second direction Y is parallel to the working surface 11 and perpendicular to the first direction X. At the moment, in the tensioning process, the elastic pad 2 can be in contact with the inner wall of the pipeline at the two bosses 12, and the tensioning effect is more stable and reliable.

In addition, referring to fig. 4, in some embodiments, at least one end of the boss 12 in the first direction X is provided with a slope 13, and a top end of the slope 13 is gradually inclined toward the other end of the boss 12 with respect to a bottom end. For example, as shown in fig. 4, in some embodiments, both ends of the boss 12 in the first direction X are provided with inclined surfaces 13, and both the inclined surfaces 13 are inclined toward the middle of the boss 12 in the first direction X.

The inclined plane 13 has the advantage that the boss 12 can be prevented from colliding with the inner wall of the pipeline in the process that the tensioning mechanism 10 enters and exits the pipeline.

In the above embodiments, in order to make the elastic pad 2 better cover the boss 12, referring to fig. 3 and 5, the elastic pad 2 may be provided with a groove 24. The grooves 24 correspond one-to-one to the bosses 12. The boss 12 is nested in the groove 24. When the surface of the boss 12 is curved, the inner wall of the groove 24 is also curved. When the number of bosses 12 is two, the number of grooves 24 is also two.

Based on the groove 24, the elastic pad 2 can be tightly coated on the boss 12, so that the elastic pad 2 is more convenient to contact with the inner wall of the pipeline, and a better tensioning effect is realized.

As a structural form of the elastic pad 2 in the foregoing embodiments, referring to fig. 3 and 5, the elastic pad 2 includes a first portion 21, and the first portion 21 is covered on the working surface 11. In the embodiment where the elastic pad 2 is provided with the groove 24, the groove 24 is provided on the first portion 21.

And, with continued reference to fig. 3 and 5, in some embodiments, the elastic pad 2 includes not only the first portion 21, but also the second portion 22 and the third portion 23. The second portion 22 and the third portion 23 are connected to two opposite ends of the first portion 21 along the second direction Y, and both the first portion 21 and the third portion are bent in a direction opposite to the protruding direction of the boss 12, that is, both the first portion 21 and the third portion are bent in a direction close to the center of the tension disc 7. At this time, the elastic pad 2 can cover the working surface 11 of the tensioning block 1 through the first portion 21, and can also cover the surfaces (also referred to as side surfaces for short) of the tensioning block 1 on the two sides of the working surface 11 through the second portion 22 and the third portion 23, so that the connection between the elastic pad 2 and the tensioning block 1 is conveniently realized.

For example, referring to fig. 3-5, in some embodiments, the second portion 22 and the third portion 23 are connected to the tensioning block 1 by a threaded connection. Specifically, as shown in fig. 3 to 5, in some embodiments, the tensioning block 1 is provided with threaded holes 15 on both surfaces of the working surface 11. Each side surface of the tensioning block 1 is provided with two threaded holes 15 arranged at intervals along the first direction X. Correspondingly, the second part 22 and the third part 23 are provided with connecting holes 25, and the connecting holes 25 correspond to the threaded holes 15 one by one. And a bolt 91 and other threaded connectors penetrate through the connecting hole 25 and the threaded hole 15 to connect the second part 22 and the third part 23 with two side surfaces of the tensioning block 1 respectively. More specifically, a gasket is disposed between the bolt 91 and the side surface of the tension block 1, for example, as shown in fig. 3, in some embodiments, two gaskets are disposed between the bolt 91 and the side surface of the tension block 1, namely a first gasket 92 and a second gasket 93, so that a firmer connection between the elastic pad 2 and the tension block 1 can be achieved.

Based on above-mentioned setting, detachably is connected between cushion 2 and the tight piece 1 that rises, and the convenience is when needs, for example when cushion 2 wears to damage, changes cushion 2.

Moreover, in the above arrangement, the elastic pad 2 and the tensioning block 1 are not directly connected at the working surface 11, but are connected at two sides of the working surface 11 along the second direction Y, and since the space at two sides of the working surface 11 is relatively larger than the space above the working surface 11, the operation of connecting the elastic pad 2 and the tensioning block 1 is more convenient.

Simultaneously, adopt threaded connection spare to realize the connection of dismantling between cushion 2 and the tight piece 1 that rises, the structure is comparatively simple, and the cost is lower, and the operation is comparatively simple, and can realize the firm installation of cushion 2 on the tight piece 1 that rises, effectively reduces cushion 2's the risk of droing.

The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims

1. A beveling machine (100), comprising:

the tensioning assembly (102) comprises a tensioning oil cylinder (3) and a tensioning device (103), wherein the tensioning oil cylinder (3) is in driving connection with the tensioning device (103) so as to drive the tensioning device (103) to be in contact with the inner wall of the pipeline when extending out, and tensioning is carried out on the pipeline; and

a monitoring device (40) coupled with the tensioning oil cylinder (3) and used for detecting the extension displacement b and the applied thrust F of the tensioning oil cylinder (3)₁And based on said detected extension displacement b and said thrust force F₁Determining the tension force T of the tension component (102) acting on the inner wall of the pipeline₁。

2. The beveling machine (100) of claim 1, wherein the monitoring device (40) comprises:

the oil pressure sensor (403) is used for detecting the oil pressure in the tensioning oil cylinder (3), and the monitoring device (40) determines the oil pressure according to the detection result of the oil pressure sensor (403)The thrust force F₁(ii) a And/or the presence of a gas in the gas,

a displacement sensor (402) for detecting the extension displacement b.

3. The beveling machine (100) according to claim 2, wherein the displacement sensor (402) is a stay wire displacement sensor (405), and a stay wire of the stay wire displacement sensor (405) is connected with the tensioning cylinder (3).

4. The beveling machine (100) according to claim 3, wherein the tensioning device (103) comprises a push rod (4), a first end of the push rod (4) is connected with the tensioning cylinder (3), and a pull wire of the pull wire displacement sensor (405) is connected with a second end of the push rod (4).

5. Beveler (100) according to claim 4, characterized in that the monitoring device (40) comprises a guide rod (401), the pull wire of the pull wire displacement sensor (405) being connected to the second end of the push rod (4) by means of the guide rod (401).

6. The beveling machine (100) according to claim 1, wherein the tensioning device (103) comprises a connecting disc (5), a connecting rod (6) and a radial moving mechanism (104), the tensioning cylinder (3) is in driving connection with the connecting disc (5) to drive the connecting disc (5) to move axially, a first end and a second end of the connecting rod (6) are respectively hinged to the connecting disc (5) and the radial moving mechanism (104) to drive the radial moving mechanism (104) to move radially when the connecting disc (5) moves axially, and the monitoring device (40) determines the tensioning force T based on the following formula₁：

Wherein A is the length of the connecting rod (6) and L₀The first end of the connecting rod (6) and the radial moving mechanism (104) are arranged in the tensioning oil cylinder at the beginning of tensioning(3) Distance in the telescoping direction.

7. Beveling machine (100) according to any one of claims 1 to 6, wherein the beveling machine (100) comprises a display (50), the display (50) being in signal connection with the monitoring device (40) for displaying the tensioning force T determined by the monitoring device (40)₁。

8. Beveling machine (100) according to any one of claims 1-6, wherein the tensioning device (103) comprises:

the pipeline tensioning device comprises a tensioning block (1) and a pipeline, wherein the tensioning block (1) is provided with a working surface (11), and the working surface (11) is the surface of the tensioning block (1) facing the inner wall of the pipeline; and

the elastic pad (2) is arranged on the working surface (11) of the tensioning block (1), so that the tensioning block (1) is in contact with the inner wall of the pipeline through the elastic pad (2).

9. Beveling machine (100) according to claim 8, characterized in that said working surface (11) is provided with a boss (12) and said elastic pad (2) is provided with a groove (24), said boss (12) being embedded in said groove (24).

10. Beveling machine (100) according to claim 8, characterized in that the elastic pad (2) comprises a first portion (21), a second portion (22) and a third portion (23), the first portion (21) covering the work surface (11), the second portion (22) and the third portion (23) being connected to opposite ends of the first portion (21) and both bent by the first portion (21) in a direction opposite to the direction in which the bosses (12) on the work surface (11) protrude, the elastic pad (2) being detachably connected to the tensioning block (1) through the second portion (22) and the third portion (23).