CN113028141B - Pipe jacking machine head torsion deviation rectifying device and deviation rectifying method thereof - Google Patents
Pipe jacking machine head torsion deviation rectifying device and deviation rectifying method thereof Download PDFInfo
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- CN113028141B CN113028141B CN202110491265.6A CN202110491265A CN113028141B CN 113028141 B CN113028141 B CN 113028141B CN 202110491265 A CN202110491265 A CN 202110491265A CN 113028141 B CN113028141 B CN 113028141B
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- torsion
- belt
- deviation
- machine head
- deviation rectifying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/10—Accessories therefor, e.g. anchors for aligning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
Abstract
The invention discloses a pipe jacking machine head torsion deviation correcting device and a deviation correcting method thereof, wherein the device is convexly arranged outside a shell of a pipe jacking machine head, the torsion deviation correcting device comprises a deviation correcting belt and a transmission wheel, the deviation correcting belt is sleeved on the transmission wheel and is driven by the rotation of the transmission wheel to drive the deviation correcting belt to perform transmission along the annular direction of the shell, the transmission wheel is driven by a driving motor to rotate, and the driving motor is arranged on the shell; and a strain sensor is arranged outside the shell. The invention adds the convex curved surface on the outer wall of the front shell of the push bench head to achieve the purpose of correcting torsion, and meanwhile, the deviation correcting device also has the tendency of relieving the torsion of the head under the condition of not starting and has the function of preventing the torsion of the head.
Description
Technical Field
The invention belongs to the field of pipe jacking equipment, and particularly relates to a pipe jacking machine head torsion deviation rectifying device and a deviation rectifying method thereof.
Background
In the pipe jacking construction process, the pipe jacking machine head is easy to twist in the cross section direction. There are many factors that cause the hair of a push bench to twist, such as: 1. when the jacking pipe is subjected to curve jacking, the resultant force of the counter forces of the soil bodies does not pass through the center of the cross section of the machine head due to the uneven counter forces of the surrounding soil bodies, so that the machine head is twisted; 2. when the jacking pipe is jacked, the rear main jacking oil cylinder is installed with flaws, so that the jacking force direction is not parallel to the axis, and the machine head is twisted; 3. the arrangement of internal facilities of the pipe jacking machine head is asymmetric, so that a single side on the left side or the right side of the machine head is overweight, and torsion is caused.
Once the head of the push bench is twisted, the quality of the push bench is easily affected. For the steel jacking pipe, because the pipe joints are connected in a welding mode, the relative sliding shearing damage of a welding interface is easily caused; meanwhile, the outward transportation speed of the excavated soil body has great influence. Therefore, especially for long-distance large-caliber pipe jacking engineering, the position of a machine head which is twisted needs to be adjusted in time, and if the machine head is developed, serious engineering accidents are caused.
At present, the torsion deviation rectifying method for the pipe jacking machine head comprises the following two methods:
firstly, the twisting is corrected by the clockwise or counterclockwise rotation of the front head cutter head, and the reverse twisting is performed by the reverse torque formed when the cutter head is twisted.
Secondly, the single-side weight is carried out in the machine head to adjust, for example, if the machine head is twisted clockwise, in order to enable the machine head to be corrected anticlockwise, the weight is carried out on the left half side of the circular machine head, so that the machine head generates anticlockwise torque, and the torsion correction effect is achieved.
The torsion correction method is a common torsion correction means in the engineering industry at present, but the torsion correction effect is slow, and the torsion correction method usually has a very small effect once the condition that the machine head is twisted greatly is met. Meanwhile, the existing pipe jacking machine head is also lack of a device for monitoring and preventing the twisting of the pipe jacking machine head, so that engineering personnel cannot predict the hidden danger that the pipe jacking machine head is twisted in advance.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the pipe jacking machine head torsion deviation rectifying device with good torsion rectifying effect and the deviation rectifying method thereof, and the device and the method are particularly suitable for large-caliber long-distance pipe jacking engineering.
The invention provides a pipe jacking machine head torsion correcting device which is convexly arranged outside a shell of a pipe jacking machine head, wherein the torsion correcting device comprises a correcting belt and a driving wheel, the correcting belt is sleeved on the driving wheel and is driven by the rotation of the driving wheel to drive the correcting belt to perform transmission along the annular direction of the shell, the driving wheel is driven by a driving motor to rotate, and the driving motor is arranged on the shell; and a strain sensor is arranged outside the shell.
As a preferred embodiment of the torsion correcting device, a correcting groove for accommodating the torsion correcting device is formed in the outer portion of the housing, and the outer side of the correcting belt protrudes out of the notch of the correcting groove.
As a preferred embodiment of the torsion correcting device, the outer surface of the correcting belt is formed into a curved surface having a plurality of protrusions.
As a better implementation mode of the torsion correcting device, a plurality of the bulges are uniformly distributed along the circumferential direction of the correcting belt.
As a preferred embodiment of the torsion correcting device, a plurality of torsion correcting devices and strain sensors are arranged outside the housing along the circumferential direction and in a central symmetry manner.
As a preferred embodiment of the torsion correcting device, the torsion correcting device is arranged at the center-angle positions of 45 °, 135 °, 225 °, 315 ° of the housing along the circumferential direction.
As a preferred embodiment of the torsion correcting device, the strain sensors are respectively arranged at 0 °, 90 °, 180 °, and 270 ° circle center angular positions of the housing along a circumferential direction.
As a preferred embodiment of the torsion deviation rectifying device, two ends of each deviation rectifying belt are respectively wound on one of the driving wheels, an output shaft of the driving motor is coaxially connected to one of the driving wheels, and the driving motor is arranged at a side portion of the deviation rectifying groove.
As a preferred implementation mode of the torsion correcting device, a monitoring system detects the strain signal of the strain sensor in real time.
The second aspect of the invention provides a method for correcting the torsion of the push bench head, wherein the shell of the push bench head is provided with the torsion correcting device and the strain sensor, and the torsion correcting method comprises the following steps:
when the pipe jacking machine head is twisted in the annular direction, the twisting deviation correcting device is started, the driving motor drives the driving wheel to rotate so as to drive the deviation correcting belt to drive, and the driving direction of the deviation correcting belt is consistent with the twisting direction of the pipe jacking machine head;
the deviation correcting belt forms a displacement trend relative to an external soil body and is forced to rotate towards a direction opposite to a twisting direction under the action of reverse friction force of the external soil body so as to correct twisting;
and the strain sensor monitors the extrusion deformation trend of the pipe jacking machine head in the circumferential direction in the pipe jacking construction process.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the invention improves the prior conventional pipe jacking machine head, and a plurality of groups of torsion deviation rectifying devices and strain sensors are additionally arranged on the outer wall of the front shell of the machine head. The torsion correcting device can be fixed on the outer wall of the front shell under the condition of not starting, and can provide certain static friction force through contact with the surrounding soil body, so that the tendency of machine head torsion is slowed down to a certain extent. Once started, the torsion correcting device can rotate clockwise or anticlockwise, and the device has a rough surface and can generate a large friction force with an external soil body during rotation, so that the machine head is driven to reversely twist, and the purpose of correcting torsion is achieved. The strain sensor can monitor the stress state of the push bench in real time, and can forecast the possibility of torsion of the push bench in advance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic plan view of a pipe jacking machine head torsion correcting device according to an embodiment of the invention.
Fig. 2 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
FIG. 3 is a schematic perspective view of a pipe jacking machine head torsion correcting device according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of the working principle of the torsion correcting device when the push bench head of the embodiment of the present invention has clockwise torsion.
FIG. 5 is a schematic diagram of the operation principle of the single torsion correcting device in FIG. 4.
The reference numbers are as follows:
a front housing-1; a deviation rectifying groove-11; a torsion deviation correcting device-2; a deviation correcting belt-21; -22, a projection; a transmission wheel 23; a strain sensor-3.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 to 5, an embodiment of the invention provides a pipe jacking machine head torsion deviation rectifying device 2, which mainly comprises a deviation rectifying belt 21, a transmission wheel 23 and a driving motor (not shown in the figure). Twist reverse deviation correcting device 2 and wholly set up in the procapsid 1 outer wall of ejector pipe aircraft nose, and twist reverse the surface of deviation correcting device 2's outside slight bulge procapsid 1 outer wall. The torsion correcting device can be relatively fixed on the outer wall of the front shell 1 under the condition of not starting, and can provide certain static friction force through contact with surrounding soil, so that the tendency of machine head torsion is slowed down to a certain extent. A deviation correcting belt 21 is annularly sleeved outside the two driving wheels 23 at the two ends to form a belt transmission mechanism, the deviation correcting belt 21 is driven to transmit by the rotation of the driving wheels 23, the axial directions of the two driving wheels 23 are parallel to the axial direction of the front shell 1, therefore, the deviation correcting belt 21 on the two driving wheels 23 can be driven to transmit along the annular direction of the front shell 1 when the two driving wheels 23 rotate. One of the two transmission wheels 23 is a driving wheel, the other is a driven wheel, the driving wheel is driven by a driving motor to rotate, the driving motor can be arranged in the front shell 1, an output shaft of the driving motor can penetrate through the front shell 1 and is coaxially connected to the driving wheel, the driving motor is started to drive the driving wheel to rotate, the deviation correcting belt 21 starts to transmit, the driving motor can adopt a motor capable of rotating in two directions, so that the rotating direction of the driving wheel can be controlled, the transmission direction of the deviation correcting belt 21 is changed, and the deviation correcting requirements under different conditions are met. When the driving motors are motors rotating in one direction, the two driving wheels are respectively connected with one driving motor, and the driving directions of the two driving motors are opposite, so that the two driving wheels are a driving wheel and a driven wheel, and the transmission of the deviation correcting belt 21 in two directions is realized.
Further, the outer surface of the deviation correcting belt 21 is formed into a curved surface having a plurality of protrusions 22, and the plurality of protrusions 22 are uniformly distributed in a circumferential direction (i.e., a driving direction) of the deviation correcting belt 21, so that the outer surface of the deviation correcting belt 21 is roughened. In case the belt 21 of rectifying is started the back, can be followed the hoop of procapsid 1 and be done in the same direction as or anticlockwise rotation, because the belt 21 of rectifying is crude on the surface, can produce great frictional force with external soil body when rotating to drive the aircraft nose and reverse twist reverse, reach the purpose of rectifying the torsion.
And the strain sensor 3 arranged on the outer wall of the front shell 1 of the push bench head can monitor the stress state of the push bench in real time and can forecast the possibility of torsion of the push bench in advance. When the aircraft nose was twisted round because of external force is about to take place, certain extrusion deformation trend appears in the casing body in the hoop, and the stress transducer 3 that sets up 1 outer wall of casing in the front can receive the signal that the transmission strain changes because of 1 outer wall of procapsid to send the torsion accident early warning to the engineering personnel, can let the engineering personnel prevent the condition emergence that the aircraft nose twistd in advance.
Preferably, a plurality of strain sensors 3 are uniformly arranged on the outer wall of the front housing 1 along the circumferential direction, and in this embodiment, the strain sensors 3 are respectively arranged at the 0 °, 90 °, 180 °, 270 ° circle center angular positions of the outer wall of the front housing along the circumferential direction. The strain signals of the strain sensors 3 are detected in real time by a monitoring system, and the monitoring system can be arranged in a push bench system or outside the field and carries out signal transmission in a wired or wireless mode.
Furthermore, a deviation rectifying groove 11 for accommodating the torsion deviation rectifying device 2 is formed in the outer wall of the front shell 1 of the push bench head, and the outer side of the deviation rectifying belt 21 protrudes out of the notch of the deviation rectifying groove 11, so that sufficient friction force can be provided when the plurality of protrusions 22 on the outer surface of the deviation rectifying belt 21 are in contact with the surrounding soil. For sandy formations, rigid materials such as stainless steel may be used for the projections 22, while for clayey formations, a more textured rubber material may be used for the projections 22.
The torsion deviation rectifying devices 2 and the deviation rectifying grooves 10 are arranged in a one-to-one correspondence manner, and in this embodiment, one torsion deviation rectifying device 2 and one deviation rectifying groove 10 are respectively arranged at the positions of the center angles of 45 °, 135 °, 225 ° and 315 ° of the outer wall of the front shell along the annular direction. And the four torsion correcting devices 2 and the four strain sensors 3 are positioned on the same ring of the front shell 1.
The invention improves the prior conventional pipe jacking machine head, and a plurality of groups of torsion deviation rectifying devices and strain sensors are additionally arranged on the outer wall of the front shell of the machine head. The torsion correcting device can be fixed on the outer wall of the front shell under the condition of not starting, and can provide certain static friction force through contact with surrounding soil bodies, so that the tendency of head torsion is relieved to a certain extent. Once started, the torsion correcting device can rotate clockwise or anticlockwise, and can generate larger friction force with an external soil body when rotating due to the rough surface of the device, so that the machine head is driven to reversely twist, and the purpose of correcting torsion is achieved. The strain sensor can monitor the stress state of the push bench in real time, and can forecast the possibility of torsion of the push bench in advance.
The following describes a method for using the pipe pushing jack torsion correcting device of the present invention, taking the case that the pipe pushing jack is twisted clockwise and needs to be twisted counterclockwise as an example.
(1) As shown in fig. 4, during pipe jacking, clockwise twisting of the pipe jacking head is observed. A counterclockwise rotation of the handpiece is required to return to the correct attitude.
(2) And 4 groups of torsion correcting devices are started and rotate clockwise simultaneously, so that the convex curved surface of the correcting belt 21 and the stratum generate relative displacement. As shown in fig. 5, the driving motor drives the driving wheel 23 to rotate clockwise, so that the convex curved surface of the deviation-correcting belt 21 forms a clockwise displacement trend relative to the external soil mass, and therefore the convex curved surface of the deviation-correcting belt 21 is subjected to a friction force F f The friction direction is in the counterclockwise direction. When the four groups of torsion correcting devices 2 simultaneously receive the counterclockwise friction force, a certain counterclockwise torque is formed, so that the pipe jacking machine head is driven to rotate counterclockwise, and the torsion correcting effect is achieved.
(3) The strain sensor is used for monitoring whether the machine head has the hidden trouble of torsion in real time in the pipe jacking construction process. When the aircraft nose was twisted round because of external force is about to take place, certain extrusion deformation trend appears in the casing body in the hoop, and the stress transducer who sets up the casing outer wall in the front can receive the signal that the transmission meets an emergency and changes because of the shell body. Before the aircraft nose takes place to twist reverse, can effectually send the early warning to constructor. After receiving the early warning, a constructor monitors the torsion condition of the head by observing the inclinometer arranged on the head of the push bench, and once the head is twisted at a larger angle, the torsion correcting device is started to correct the torsion.
Compared with the prior art, the pipe jacking machine head torsion deviation rectifying device and the deviation rectifying method thereof have the following advantages:
1. compared with the traditional methods such as a rotating cutter disc or a weight pressing method, the method can more effectively achieve the purpose of twist correction, particularly for large-caliber long-distance pipe jacking engineering, because the weight of the pipe jacking head is large under the condition, the traditional twist correction method is not good. Meanwhile, the deviation correcting device can also relieve the tendency of the machine head torsion under the condition of not starting, and has the function of preventing the machine head from torsion.
2. According to the invention, the strain sensor is additionally arranged on the outer wall of the front shell of the pipe jacking machine head, and is used for monitoring the condition of the pipe jacking machine head in the jacking process, so that the condition of the pipe jacking machine head can be effectively reflected, engineering personnel can timely find the hidden danger of torsion of the pipe jacking machine head, and timely eliminate the hidden danger, and the quality and efficiency of pipe jacking engineering are ensured.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (6)
1. The utility model provides a push bench head twists reverse deviation correcting device which characterized in that: the torsion deviation correcting device comprises a deviation correcting belt and a driving wheel, the deviation correcting belt is sleeved on the driving wheel and is driven by the driving wheel to drive the deviation correcting belt to transmit along the annular direction of the shell, the driving wheel is driven by a driving motor to rotate, and the driving motor is arranged on the shell; a strain sensor is arranged outside the shell;
a plurality of torsion correcting devices and the strain sensors are arranged on the outer part of the shell along the annular direction in a central symmetry manner; each deviation correcting belt is sleeved on the outer sides of the two driving wheels at the two ends in a ring shape to form a belt driving mechanism, and the axial directions of the two driving wheels are parallel to the axial direction of the front shell;
the outer part of the shell is provided with a deviation rectifying groove for accommodating the torsion deviation rectifying device, the outer side of the deviation rectifying belt protrudes out of the notch of the deviation rectifying groove, the outer surface of the deviation rectifying belt is formed into a curved surface with a plurality of protrusions, and the protrusions are uniformly distributed along the circumferential direction of the deviation rectifying belt, so that the outer surface of the deviation rectifying belt is rough;
the torsion correcting device is relatively fixed on the outer wall of the front shell of the pipe jacking machine head under the condition of not starting, and provides static friction force through contact with surrounding soil bodies to slow down the torsion trend of the machine head;
after the deviation correcting belt is started, clockwise or anticlockwise rotation is carried out along the annular direction of the front shell, and the friction force generated by the deviation correcting belt and an external soil body drives the machine head to reversely twist when the deviation correcting belt rotates, so that the purpose of correcting twist is achieved.
2. The pipe push bench head torsion correcting device of claim 1, wherein: the torsion correcting devices are respectively arranged at the positions of the circle centers of 45 degrees, 135 degrees, 225 degrees and 315 degrees of the shell along the annular direction.
3. The pipe push bench head torsion correcting device of claim 2, wherein: the strain sensors are respectively arranged on the circle center angle positions of 0 degree, 90 degrees, 180 degrees and 270 degrees of the shell along the annular direction.
4. The pipe push bench head torsion correcting device of claim 1, wherein: the output shaft of the driving motor is coaxially connected with one driving wheel, and the driving motor is arranged on the side part of the deviation rectifying groove.
5. The pipe push bench head torsion correcting device of claim 1, wherein: and detecting the strain signal of the strain sensor in real time by a monitoring system.
6. A pipe jacking machine head torsion deviation rectifying method is characterized in that a shell of a pipe jacking machine head is provided with the torsion deviation rectifying device and the strain sensor, wherein the torsion deviation rectifying device and the strain sensor are as defined in any one of claims 1 to 5, and the torsion deviation rectifying method comprises the following steps:
when the pipe jacking machine head is twisted in the annular direction, the twisting deviation correcting device is started, the driving motor drives the driving wheel to rotate so as to drive the deviation correcting belt to drive, and the driving direction of the deviation correcting belt is consistent with the twisting direction of the pipe jacking machine head;
the deviation correcting belt forms a displacement trend relative to an external soil body and is forced to rotate towards a direction opposite to a twisting direction under the action of reverse friction force of the external soil body so as to correct twisting;
and the strain sensor monitors the extrusion deformation trend of the pipe jacking machine head in the circumferential direction in the pipe jacking construction process.
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| CN106050254A (en) * | 2016-07-21 | 2016-10-26 | 中铁工程装备集团隧道设备制造有限公司 | Design method for deflection correction system of hard-rock pipe pushing jack |
| CN107725892A (en) * | 2017-09-07 | 2018-02-23 | 武汉市汉阳市政建设集团公司 | The device and method in artificial jacking construction real time correction cutterhead jacking direction |
| CN108180021A (en) * | 2018-03-05 | 2018-06-19 | 安徽路鼎科技股份有限公司 | The anti-rotational wing plate of push-bench |
| CN109403995A (en) * | 2018-11-20 | 2019-03-01 | 中国铁建重工集团有限公司 | A kind of deviation correcting device of push-bench |
| CN210372292U (en) * | 2019-06-18 | 2020-04-21 | 中石化南京工程有限公司 | Protective cabin door device for drift sand section pipe jacking crossing construction |
| CN211777443U (en) * | 2020-03-24 | 2020-10-27 | 中铁工程装备集团有限公司 | Tunnel boring machine entangles and rolls and synchronous propulsion assembly device |
| CN112012757A (en) * | 2020-09-15 | 2020-12-01 | 临沂市政集团有限公司 | Muddy water balance type pipe jacking machine and construction process thereof in flowing sand stratum |
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