CN113123794B - Horizontal freezing pipe drawing device - Google Patents
Horizontal freezing pipe drawing device Download PDFInfo
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- CN113123794B CN113123794B CN202110333024.9A CN202110333024A CN113123794B CN 113123794 B CN113123794 B CN 113123794B CN 202110333024 A CN202110333024 A CN 202110333024A CN 113123794 B CN113123794 B CN 113123794B
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- 230000008014 freezing Effects 0.000 title claims abstract description 126
- 238000007710 freezing Methods 0.000 title claims abstract description 126
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 238000004804 winding Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 3
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- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a horizontal freezing pipe drawing device which comprises a steel wire rope, a winch, a pipe drawing device bracket, a first fixed pulley and a second fixed pulley, wherein the first fixed pulley is fixed on the steel wire rope; the first end of the pipe drawer support is abutted against the vertical surface of the underground wall structure, and the first fixed pulley is arranged on the second end of the pipe drawer support; the second fixed pulley is arranged on a flange plate of the freezer of the horizontal freezing pipe to be pulled out; one end of the steel wire rope is fixedly connected with a flange plate of the freezer of the horizontal freezing pipe to be pulled out, and the other end of the steel wire rope sequentially bypasses the first fixed pulley and the second fixed pulley and is wound on a winding drum of the winch; when the steel wire rope is tensioned and drawn to pull out the horizontal freezing pipe freezer flange plate, the pipe drawer support is pressed on the vertical surface of the underground wall structure. The stress point of the horizontal freezing pipe drawing device provided by the invention is completely separated from the scaffold and the working platform, so that the deformation and collapse of the scaffold construction platform caused by stress are avoided.
Description
Technical Field
The invention relates to the technical field of freezing pipe drawing, in particular to a horizontal freezing pipe drawing device.
Background
Municipal subway projects are generally measured by sections, according to a bidding method and a passing method, the winning bid in one unit is not more than 2 adjacent sections, a construction end well structure is arranged between different sections, and shield hoisting, lowering, receiving and launching are all carried out through end wells. In the water-containing sand zone, freezing is generally required due to geological reasons, and the freezing comprises two modes of freezing a ground vertical hole and constructing a horizontal hole at an end well, wherein horizontal freezing has the advantage of avoiding unfreezing of a frozen wall of a side wall, and the construction and pulling-out work of a freezing pipe can be carried out in the shield construction range. In recent years, a tube drawing-free technology is developed, PVC tubes are used for replacing seamless steel tubes in a shield range to be frozen, but flexible materials are easy to wind a cutter head, and certain problems exist. The current common design is horizontal freezing, and seamless steel tube materials are adopted. Therefore, the pipe drawing process is carried out according to the time node when the shield enters and exits the hole.
At present, the pipe drawing method is generally shown in fig. 1, and it should be noted that fig. 1 is a simplified diagram, only a diaphragm wall structure is used for representation, the thickness is generally about 0.9m in engineering, and a concrete structure layer (a steel-concrete structure layer is arranged on the inner side of the diaphragm wall and far away from the original soil layer, and the thickness is about 0.9 m) is omitted. The freezing pipes are in orifice pipe structures with flanges, flange structures are omitted in figure 1, distribution conditions of the freezing pipes are simplified for clarity of illustration, and other freezing pipes are indicated only by hole distribution ring diameters (dotted lines) and hole positions. In fig. 1, the fixed pulley can be replaced by a chain block or an electric block, and a winch can be omitted after the replacement, but a suspension device needs to be added, and the scaffold also comprises an inclined strut mode. The working mode of tube drawing in figure 1 is as follows: the steel wire rope is connected to the flange of the freezing pipe freezer from the winch through the fixed pulley, and after the steel wire rope is fixed through the buckle, the steel wire rope is tightened through the winch to achieve the purpose of pulling out the freezing pipe. The tube drawing method has two disadvantages as follows:
(1) has high risk: no matter the hand chain block, the electric block or the fixed pulley is directly fixed on the scaffold, the scaffold is mainly a platform which is built for high-altitude operation personnel to conveniently operate at high altitude, and if the friction resistance in a frozen wall is too large, the steel wire rope drawing force can pull the scaffold to the direction of the ground wall or even to be bent; and if the construction is carried out by matching the winch with the fixed pulley, the whole scaffold is easy to collapse once the scaffold is rolled up. Therefore, the pipe drawing mode enables constructors on the scaffold platform to have higher personal risks.
2) In technical aspect: the position distribution of freezing pipes to be pulled out is generally annular, and the blank spaces of the scaffold are square, so that when the pipes are actually pulled out, each freezing pipe cannot be aligned to a fixed pulley or a hoist attached to the scaffold along the axis, and a large eccentric distance can be generated during pipe pulling. At this time, the drawing force is required to overcome the bending moment caused by eccentricity in addition to the frictional resistance generated by the frozen wall and the diaphragm wall, thereby increasing the difficulty of drawing the pipe.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a horizontal freezing pipe drawing device, which reduces the pipe drawing difficulty by adjusting the eccentricity generated during pipe drawing, can get rid of the supporting point of a scaffold, and avoids personal safety risk possibly generated by constructors during pipe drawing.
In order to solve the technical problems, the invention provides the following technical scheme:
a horizontal freezing pipe drawing device comprises a steel wire rope, a winch, a pipe drawing device bracket, a first fixed pulley and a second fixed pulley; the first end of the pipe drawer support is abutted against the vertical surface of the underground wall structure, and the first fixed pulley is arranged on the second end of the pipe drawer support; the second fixed pulley is arranged on a flange plate of the freezer of the horizontal freezing pipe to be pulled out; one end of the steel wire rope is fixedly connected with a flange plate of a freezer of the horizontal freezing pipe to be pulled out on the underground diaphragm wall structure, and the other end of the steel wire rope sequentially rounds the first fixed pulley and the second fixed pulley and is wound on a winding drum of the winch; when the steel wire rope is tensioned and the horizontal freezing pipe freezer flange plate to be pulled out is pulled out, the pipe drawer support is tightly pressed on the vertical surface of the underground continuous wall structure. The device replaces the scaffold frame in the traditional tube drawing mode as the atress fulcrum through setting up the tube drawing device support, the personal safety risk problem that probably produces when effectively avoiding constructor tube drawing, simultaneously, can effectively eliminate through setting up tube drawing device support, first fixed pulley and second fixed pulley and wait to pull out to freeze the pipe and because of the produced eccentricity of atress when pulling out to make the level freeze the pipe and change and pull out.
In the horizontal freezing pipe drawing device, the pipe drawer support comprises a first support leg, a second support leg and a beam structure, wherein a first end of the first support leg and a first end of the second support leg are respectively abutted against a vertical surface of the underground diaphragm wall structure, and two ends of the beam structure are respectively fixedly connected with a second end of the first support leg and a second end of the second support leg; the first fixed pulley is mounted on the beam structure. In actual operation, the eccentricity in the vertical direction can be adjusted by adjusting the abutting position of the pipe drawer support on the vertical surface of the diaphragm wall structure, so that the freezing pipe and the two support legs are ensured to be positioned on the same straight line.
In the horizontal freezing pipe drawing device, the beam structure comprises a beam body and a sliding support, and the beam structure is fixedly connected with the second end of the first supporting leg and the second end of the second supporting leg through two ends of the beam body respectively; the first fixed pulley is fixedly arranged on the sliding support; the sliding support is installed on the beam body and can slide on the beam body under the action of external force, so that the sliding support is close to or far away from the joint of the first support leg and the beam body to adjust the eccentricity in the left-right direction of the horizontal freezing pipe to be removed.
In the horizontal freezing pipe drawing device, the beam body is an I-steel rail, the sliding support is a rail fixed pulley support, and the rail fixed pulley support is of a channel steel structure; the first fixed pulley is fixedly installed on the back face of the groove bottom of the channel steel structure, and limiting mechanisms for limiting the channel steel structure to move along the direction perpendicular to the sliding direction are installed on the inner sides of the two groove walls of the channel steel structure respectively.
According to the horizontal freezing pipe drawing device, the limiting mechanism comprises a first fixing shaft, a rail wheel, a limiting wheel and a second fixing shaft, the first end of the first fixing shaft is fixedly arranged on the inner side surface of the wall of the groove, the rail wheel is arranged on the first fixing shaft, the second fixing shaft is fixedly arranged on the second end of the first fixing shaft, and the limiting wheel is arranged on the second fixing shaft; one of wing plates of the I-shaped steel track is located between the track wheel and the groove bottom of the channel steel structure, and the limiting wheel is in clearance fit with a web plate surface of the I-shaped steel track so as to ensure that the track wheel cannot shake left and right when sliding along the track.
According to the horizontal freezing pipe drawing device, the axis of the first fixing shaft is perpendicular to the axis of the second fixing shaft.
The horizontal freezing pipe drawing device further comprises a third fixed pulley, wherein the third fixed pulley is fixedly installed on a vertical surface of the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located, or the third fixed pulley is fixedly installed on a vertical surface of the ground connection wall structure opposite to the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located (namely, on a vertical surface of the ground connection wall structure opposite to the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located); one end of the steel wire rope is fixedly connected with the flange plate of the freezer of the horizontal freezing pipe to be pulled out, and the other end of the steel wire rope sequentially bypasses the first fixed pulley, the second fixed pulley and the third fixed pulley and is wound on a winding drum of the winch. Preferably, the third fixed pulley is fixedly installed on the vertical surface of the ground connection wall structure opposite to or opposite to the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located, namely the vertical surface of the ground connection wall structure close to the winch. If the third fixed pulleys are fixedly installed on the vertical face of the ground connection wall structure where the flange plates of the horizontal freezing pipes to be pulled out are located, as the flange plates of the horizontal freezing pipes to be pulled out are distributed on the vertical face of the ground connection wall structure in an annular mode, in this case, installation of only one third fixed pulley may not be enough to adapt to pulling out of the flange plates of the horizontal freezing pipes to be pulled out. If the third fixed pulley is fixedly arranged on the opposite or opposite vertical surface of the ground connection wall structure, and the distance from the steel wire rope to the third fixed pulley after the steel wire rope is led out from the second fixed pulley is larger, the steel wire rope can adapt to the change of the relative position of the flange plate of the horizontal freezing pipe freezer to be pulled out on the vertical surface of the ground connection wall structure only by adjusting a small angle, so that only one third fixed pulley needs to be arranged on the opposite or opposite vertical surface of the ground connection wall structure.
In the horizontal freezing pipe drawing device, the pipe drawing device bracket is also provided with a fourth fixed pulley; one end of the steel wire rope is fixedly connected with the flange plate of the freezer of the horizontal freezing pipe to be pulled out, and the other end of the steel wire rope sequentially bypasses the first fixed pulley, the second fixed pulley, the fourth fixed pulley and the third fixed pulley and is wound on a winding drum of the winch.
The third fixed pulley and the fourth fixed pulley can play a role in guiding and fixing, the flange plate of the horizontal freezing pipe to be pulled out and the pipe drawer support can be fixed at a specific position through the steel wire rope, the third fixed pulley and the fourth fixed pulley by arranging the third fixed pulley and the fourth fixed pulley, so that when the horizontal freezing pipe is pulled out, the eccentricity generated on the horizontal freezing pipe is minimum, and the horizontal freezing pipe is easier to pull out.
The fourth fixed pulley can play a role in adjusting the trend or the angle of the steel wire rope so as to ensure the stability of the tube extractor bracket during extraction besides the guiding function. For example: because the flange plates of the horizontal freezing pipes to be pulled out are annularly distributed on the vertical surface of the ground-linked wall structure, under the condition that only one third fixed pulley is installed on the vertical surface of the ground-linked wall structure, the situation that a steel wire rope does not generate large eccentricity after being led out from the second fixed pulley can not be ensured to bypass the third fixed pulley, and therefore the fourth fixed pulley is arranged, the steel wire rope can firstly bypass the fourth fixed pulley after being led out from the second fixed pulley and then bypass the third fixed pulley, and the stability of the bracket of the cupping device can be ensured to be better. In addition, when the third fixed pulley is installed on the ground connection wall structure opposite to the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located (namely, installed on the vertical surface of the ground connection wall structure opposite to the ground connection wall structure where the flange plate of the horizontal freezing pipe freezer to be pulled out is located), the distance from the steel wire rope to the third fixed pulley after being led out from the second fixed pulley is large, the steel wire rope can adapt to the change of the relative position of the flange plate of the horizontal freezing pipe freezer to be pulled out on the vertical surface of the ground connection wall structure only by adjusting a small angle, and the fourth fixed pulley does not need to be arranged at this time.
In the horizontal freezing pipe drawing device, the first supporting leg and the second supporting leg are seamless steel pipes with the diameter phi of 63.5-76mm and the length of 4 m.
According to the horizontal freezing pipe drawing device, the fixed connection position of the steel wire rope and the flange plate of the horizontal freezing pipe freezer to be drawn out and the installation position of the second fixed pulley are symmetrical relative to the axis of the horizontal freezing pipe, so that the pipe drawer support can be ensured to be vertical to the vertical surface of the ground connection wall structure.
The technical scheme of the invention achieves the following beneficial technical effects:
(1) according to the invention, the tube drawing device bracket is arranged in the horizontal freezing tube drawing device to replace a scaffold in the traditional tube drawing mode as a stress fulcrum, so that the problem of personal safety risk caused by deformation and collapse of the scaffold possibly generated when a constructor pulls out a tube is effectively avoided; in addition, the tube drawing device bracket, the first fixed pulley and the second fixed pulley can effectively eliminate the eccentricity generated by stress when the freezing tube to be drawn is drawn, so that the horizontal freezing tube is easier to be drawn.
(2) The horizontal freezing pipe drawing device takes seamless steel pipes with the diameter of phi 63.5-76mm and the length of 4m as a first supporting leg and a second supporting leg of a pipe drawer support, and can adjust the eccentricity in the vertical direction by adjusting the abutting positions of the first supporting leg and the second supporting leg of the pipe drawer support on the vertical surface of the diaphragm wall structure in the actual pipe drawing operation process; through with first fixed pulley fixed mounting on sliding support to install sliding support on beam structure's crossbeam body, make sliding support slide on the crossbeam body under the exogenic action, thereby make sliding support close on or keep away from the junction of first landing leg and crossbeam body, can adjust from this and wait to pull out the level and freeze the epaxial eccentricity in the left and right sides of pipe.
(3) The horizontal freezing pipe drawing device is also provided with a rail fixed pulley support which is of a channel steel structure, and limiting mechanisms for limiting the channel steel structure to move along the direction perpendicular to the sliding direction are respectively arranged on the inner sides of two channel walls of the channel steel structure, so that the rail wheel can not shake left and right when sliding along the rail. In addition, the horizontal freezing tube drawing device can be further provided with a third fixed pulley and a fourth fixed pulley which play a role in guiding and fixing, and the third fixed pulley and the fourth fixed pulley can be used for fixing a horizontal freezing tube to be drawn and a tube drawing device bracket at a specific position through the guiding effects of the steel wire rope, the third fixed pulley and the fourth fixed pulley, so that the eccentricity generated on the horizontal freezing tube is minimum when the horizontal freezing tube is drawn, and the horizontal freezing tube is easier to be drawn.
(4) In the actual operation of the horizontal freezing pipe drawing device, the fixed connection position of the steel wire rope and the flange plate of the horizontal freezing pipe freezer to be drawn out and the installation position of the second fixed pulley are symmetrical about the axis of the horizontal freezing pipe, so that the pipe drawer support can be effectively ensured to be vertical to the vertical surface of the diaphragm wall structure.
Drawings
FIG. 1 is a schematic drawing of a prior art horizontal freezing tube;
FIG. 2 is a schematic view of the working principle of the horizontal freezing tube extractor of the present invention;
FIG. 3 is a schematic view of the working principle of the horizontal freezing tube extractor of the present invention;
FIG. 4 is a front view of a beam structure of the horizontal freezing tube drawer of the present invention;
FIG. 5 is a schematic view of the mounting positions of the first fixed sheave and the fourth fixed sheave on the tubing extractor housing of the present invention.
The reference numbers in the figures denote: 1-a ground wall structure; 2-removing the horizontal freezing pipe freezer flange plate; 3-a tube extractor stand; 4-a steel wire rope; 5-a first fixed pulley; 6-i-beam rail; 7-a second fixed pulley; 8-a winch; 9-rail fixed pulley support; 10-a first fixed shaft; 11-a rail wheel; 12-a spacing wheel; 13-a second fixed shaft; 14-a third fixed pulley; 15-fourth fixed pulley.
Detailed Description
Fig. 2 and fig. 3 are schematic diagrams respectively illustrating the working principle of two horizontal frozen tube extractors enumerated in the present invention, fig. 4 is a front view of a beam structure of the horizontal frozen tube extractor of the present invention, and fig. 5 is a schematic diagram illustrating the mounting positions of the first fixed pulley and the fourth fixed pulley on the tube extractor bracket of the present invention.
Example 1
As shown in fig. 2 and 5, the horizontal freezing pipe drawing device of the present embodiment includes a steel wire rope 4, a winch 8, a pipe drawer support 3, a first fixed pulley 5, a second fixed pulley 7, a third fixed pulley 14 and a fourth fixed pulley 15; the first end of the tube drawing device bracket 3 is propped against the vertical surface of the diaphragm wall structure 1, and the first fixed pulley 5 is fixedly arranged on the second end of the tube drawing device bracket 3; the second fixed pulley 7 is fixedly arranged on the flange 2 of the freezer of the horizontal freezing pipe to be pulled out; the third fixed pulley 14 is fixedly arranged on the vertical surface of the ground connection wall structure 1 where the flange plate 2 of the horizontal freezing pipe freezer to be pulled out is positioned; the fourth fixed pulley 15 is fixedly arranged on the tube drawing device bracket 3; one end of the steel wire rope 4 is of a steel hook structure, and is fixedly connected with a horizontal freezing pipe freezer flange 2 to be pulled out through an orifice pipe flange hooking a freezing pipe, and the other end of the steel wire rope 4 sequentially rounds a first fixed pulley 5, a second fixed pulley 7, a fourth fixed pulley 15 and a third fixed pulley 14 and is wound on a winding drum of a winch 8; the fixed connection part of the steel wire rope 4 and the horizontal freezing pipe freezer flange 2 to be pulled out and the fixed installation part of the second fixed pulley 7 are symmetrical about the axis of the horizontal freezing pipe, so that the pipe drawer support can be vertical to the vertical surface of the ground connection wall structure when the steel wire rope is tensioned. When the steel wire rope 4 is tensioned and drawn to pull out the horizontal freezing pipe freezer flange 2 to be pulled out, the pipe drawer bracket 3 is pressed on the vertical surface of the underground continuous wall structure 1 and is vertical to the vertical surface of the underground continuous wall structure 1. This embodiment replaces the scaffold frame in the traditional tube drawing mode as the atress fulcrum through setting up the tube drawing ware support, effectively avoids constructor probably to produce when the tube drawing warp, collapses the personal safety risk that causes because of the scaffold frame, simultaneously, can effectively eliminate through setting up tube drawing ware support, first fixed pulley and second fixed pulley and wait to pull out the eccentricity that freezes the pipe and produce because of pulling the pulling force when pulling out to make the level freeze the pipe and change and pull out. The third fixed pulley and the fourth fixed pulley play a role in guiding and fixing, and the horizontal freezing pipe to be pulled out and the pipe drawer support can be fixed at a specific position through the steel wire rope, the third fixed pulley and the fourth fixed pulley by arranging the third fixed pulley and the fourth fixed pulley, so that the eccentricity generated on the horizontal freezing pipe is minimum when the horizontal freezing pipe is pulled out, and the horizontal freezing pipe is more easily pulled out.
In this embodiment, the tube drawer support 3 includes a first leg, a second leg and a beam structure, a first end of the first leg and a first end of the second leg respectively abut against a vertical surface of the diaphragm wall structure 1, and two ends of the beam structure are respectively fixedly connected with a second end of the first leg and a second end of the second leg; the first fixed pulley 5 is mounted on the beam structure. The first supporting leg and the second supporting leg are both seamless steel pipes with the diameter of 76mm and the length of 4 m. In the actual operation process, the eccentricity in the vertical direction can be adjusted by adjusting the abutting position of the tube drawing device bracket on the vertical surface of the diaphragm wall structure, so that the freezing tube and the two supporting legs are ensured to be positioned on the same straight line.
As shown in fig. 4, the beam structure includes a beam body and a sliding bracket, and the beam structure is respectively fixedly connected to the second end of the first leg and the second end of the second leg through the two ends of the beam body; the first fixed pulley 5 is fixedly arranged on the sliding bracket; the sliding support is installed on the crossbeam body to the sliding support can slide on the crossbeam body under the exogenic action, so that the sliding support closes on or keeps away from the junction of first landing leg and crossbeam body, adjusts the eccentricity of waiting to pull out on the horizontal direction of freezing the pipe. The beam body is an I-shaped steel rail 6, the sliding support is a rail fixed pulley support 9, and the rail fixed pulley support is of a channel steel structure; the first fixed pulley 5 is fixedly installed on the back face of the bottom of the groove steel structure, and limiting mechanisms for limiting the movement of the groove steel structure in the direction perpendicular to the sliding direction are installed on the inner sides of the two groove walls of the groove steel structure respectively. The limiting mechanism comprises a first fixing shaft 10, a rail wheel 11, a limiting wheel 12 and a second fixing shaft 13, wherein the first end of the first fixing shaft 10 is fixedly arranged on the inner side surface of the wall of the groove, the rail wheel 11 is arranged on the first fixing shaft 10, and the axis of the first fixing shaft 10 is vertical to the axis of the second fixing shaft 13; the second fixed shaft 13 is fixedly arranged on the second end of the first fixed shaft 10, and the limiting wheel 12 is arranged on the second fixed shaft 13; one wing plate of the I-shaped steel rail 6 is located between the rail wheel 11 and the groove bottom of the channel steel structure, and the limiting wheel 12 is in clearance fit with the web plate surface of the I-shaped steel rail 6 so as to ensure that the rail wheel cannot shake left and right when sliding along the rail.
The working principle is as follows: when the freezing pipe to be pulled out is pulled out, the first ends of the first supporting leg and the second supporting leg of the pipe puller support are firstly abutted against the vertical surface of the underground continuous wall structure 1 where the flange plate 2 of the freezing pipe to be pulled out is located, and the abutting positions of the first supporting leg and the second supporting leg on the vertical surface of the underground continuous wall structure 1 are in axial symmetry distribution relative to the fixed connection position of the freezing pipe to be pulled out and the underground continuous wall structure 1. And then hooking one end of the steel wire rope with a steel hook structure on an orifice pipe flange of the freezing pipe, so that one end head of the steel wire rope is fixedly connected with the horizontal freezing pipe freezer flange 2 to be pulled out, then sequentially winding the other end of the steel wire rope 4 around the first fixed pulley 5, the second fixed pulley 7, the fourth fixed pulley 15 and the third fixed pulley 14 and winding the other end of the steel wire rope 4 on a winding drum of a winch 8, wherein the fixed connection part of the steel wire rope 4 and the horizontal freezing pipe freezer flange 2 to be pulled out is symmetrical to the fixed installation part of the second fixed pulley 7 about the axis of the horizontal freezing pipe. The steel wire rope is tensioned through the winch, so that the pipe drawer support is perpendicular to the vertical face of the underground continuous wall structure 1, under the pulling action of the steel wire rope, the sliding support slides on the beam body to drive the first fixed pulley 5 to a position where the eccentricity of the horizontal freezing pipe to be pulled out is minimum, the pulling force on the steel wire rope is continuously increased through the winch, and the horizontal freezing pipe to be pulled out can be pulled out.
In this embodiment, the beam structure can be made of steel pipes or adjusted by using finished rails, and the rail wheels 11 and the limiting wheels 12 are made of PVC or steel, so as to adjust the eccentricity in the left and right directions of the horizontal freezing pipe to be pulled out; when the device is used in an actual field, the common gravity of the tube drawing device bracket 3, the steel wire rope 4, the first fixed pulley 5, the fourth fixed pulley 15 and the cross beam structure is limited, and the eccentricity in the upper and lower aspects of the tube drawing device bracket is not influenced basically or only slightly influenced within an acceptable range; in this embodiment, the third fixed pulley 14 may also be fixedly installed on the elevation of the diaphragm wall structure 1 adjacent to the winch 8 (as shown in fig. 3), and the position of the third fixed pulley 14 only needs to avoid the scaffold and does not affect the construction, which is not too high. The key points of the invention lie in adjusting the eccentricity of the horizontal freezing pipe to be pulled out when being subjected to the pulling force and getting rid of the situation that the scaffold is taken as a fulcrum, the horizontal freezing pipe pulling device of the embodiment can make the stress point completely separated from the scaffold and the working platform in the use process, and the deformation and the collapse of the scaffold construction platform caused by stress are avoided.
Example 2
As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the third fixed pulley 14 is arranged on the vertical surface of the ground connection wall structure opposite to the ground connection wall structure 1 where the horizontal freezing pipe freezer flange 2 to be pulled out is arranged (namely, on the vertical surface of the ground connection wall structure opposite to the ground connection wall structure 1 where the horizontal freezing pipe freezer flange 2 to be pulled out is arranged), and only the first fixed pulley 5 is arranged on the pipe drawer support 3, and the fourth fixed pulley 15 is not arranged. The distance from the steel wire rope 4 to the third fixed pulley 14 after the steel wire rope 4 is led out from the second fixed pulley 7 is larger, and the steel wire rope 4 can adapt to the change of the relative position of the flange plate 2 of the horizontal freezing pipe freezer to be pulled out on the vertical surface of the underground diaphragm wall structure 1 only by adjusting a small angle, so that the fourth fixed pulley 15 is not needed. Compared with the embodiment 1, the structure of the embodiment is simpler, the number of the fixed pulleys needing to be installed is the least, and the horizontal freezing pipe pulling-out function can be well achieved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (10)
1. A horizontal freezing pipe drawing device comprises a steel wire rope (4) and a winch (8), and is characterized by further comprising a pipe drawing device bracket (3), a first fixed pulley (5) and a second fixed pulley (7); the first end of the pipe extractor bracket (3) is propped against the vertical surface of the underground wall structure (1), and the first fixed pulley (5) is arranged on the second end of the pipe extractor bracket (3); the second fixed pulley (7) is arranged on a flange plate (2) of the freezer of the horizontal freezing pipe to be pulled out; one end of the steel wire rope (4) is fixedly connected with a flange plate (2) of a horizontal freezing pipe freezer to be pulled out on the underground diaphragm wall structure (1), and the other end of the steel wire rope (4) sequentially rounds the first fixed pulley (5) and the second fixed pulley (7) and is wound on a winding drum of the winch (8); when the steel wire rope (4) is tensioned and the horizontal freezing pipe freezer flange plate (2) to be pulled out is pulled out, the pipe drawer support (3) is pressed on the vertical surface of the underground wall structure (1).
2. A horizontal freezing pipe pulling apparatus according to claim 1, wherein the pipe puller support (3) comprises a first leg, a second leg and a beam structure, wherein a first end of the first leg and a first end of the second leg respectively abut against the vertical surface of the diaphragm wall structure (1), and two ends of the beam structure are fixedly connected with a second end of the first leg and a second end of the second leg respectively; the first fixed pulley (5) is mounted on the beam structure.
3. The horizontal freezing pipe drawing device according to claim 2, wherein the beam structure comprises a beam body and a sliding support, and the beam structure is fixedly connected with the second end of the first leg and the second end of the second leg through two ends of the beam body respectively; the first fixed pulley (5) is fixedly arranged on the sliding support; the sliding support is installed on the cross beam body, and the sliding support can slide on the cross beam body under the action of external force, so that the sliding support is close to or far away from the connection position of the first supporting leg and the cross beam body.
4. The horizontal freezing pipe drawing device according to claim 3, wherein the beam body is an I-steel rail (6), the sliding support is a rail fixed pulley support (9), and the rail fixed pulley support is a channel steel structure; the first fixed pulley (5) is fixedly installed on the back face of the groove bottom of the channel steel structure, and limiting mechanisms for limiting the channel steel structure to move along the direction perpendicular to the sliding direction are installed on the inner sides of the two groove walls of the channel steel structure respectively.
5. The tube drawing device for the horizontal freezing tube according to claim 4, wherein the limiting mechanism comprises a first fixed shaft (10), a rail wheel (11), a limiting wheel (12) and a second fixed shaft (13), the first end of the first fixed shaft (10) is fixedly installed on the inner side surface of the wall of the groove, the rail wheel (11) is installed on the first fixed shaft (10), the second fixed shaft (13) is fixedly installed on the second end of the first fixed shaft (10), and the limiting wheel (12) is installed on the second fixed shaft (13); one of wing plates of the I-shaped steel track (6) is located between the rail wheel (11) and the groove bottom of the channel steel structure, and the limiting wheel (12) is in clearance fit with a web plate surface of the I-shaped steel track (6).
6. A horizontal freezing tube drawing device according to claim 5, wherein the axis of the first stationary shaft (10) and the axis of the second stationary shaft (13) are perpendicular to each other.
7. The horizontal freezing pipe drawing device according to any one of claims 1 to 6, wherein the horizontal freezing pipe drawing device further comprises a third fixed pulley (14), the third fixed pulley (14) is fixedly installed on a vertical face of the underground diaphragm wall structure (1) where the horizontal freezing pipe freezer flange plate (2) to be drawn out is located, or the third fixed pulley (14) is fixedly installed on a vertical face of the underground diaphragm wall structure opposite to the underground diaphragm wall structure (1) where the horizontal freezing pipe freezer flange plate (2) to be drawn out is located; one end of the steel wire rope (4) is fixedly connected with the flange plate (2) of the horizontal freezing pipe freezer to be pulled out, and the other end of the steel wire rope (4) sequentially rounds the first fixed pulley (5), the second fixed pulley (7) and the third fixed pulley (14) and is wound on a winding drum of the winch (8).
8. A horizontal freezing tube drawing device according to claim 7, wherein a fourth fixed pulley (15) is further mounted on the tube drawing device bracket (3); one end of the steel wire rope (4) is fixedly connected with the flange plate (2) of the horizontal freezing pipe freezer to be pulled out, and the other end of the steel wire rope (4) sequentially bypasses the first fixed pulley (5), the second fixed pulley (7), the fourth fixed pulley (15) and the third fixed pulley (14) and is wound on a winding drum of the winch (8).
9. A horizontal freezing pipe drawing device according to any one of claims 3 to 6, wherein said first leg and said second leg are both seamless steel pipes having a diameter of 63.5 to 76mm and a length of 4 m.
10. The horizontal freezing pipe drawing device according to any one of claims 1 to 6, wherein the fixed connection position of the steel wire rope (4) and the flange plate (2) of the horizontal freezing pipe freezer to be drawn out and the installation position of the second fixed pulley (7) are symmetrical about the axis of the horizontal freezing pipe.
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| CN202110333024.9A CN113123794B (en) | 2021-03-29 | 2021-03-29 | Horizontal freezing pipe drawing device |
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| CN202110333024.9A CN113123794B (en) | 2021-03-29 | 2021-03-29 | Horizontal freezing pipe drawing device |
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| CN113123794B true CN113123794B (en) | 2022-08-05 |
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