Splicing type jacking pipe
By using a double-layer pipe design and limiting components for fixation, the radial offset problem of PVC top-pull pipes was solved, achieving stable connection and efficient production, and improving the stability and sealing of the pipeline system.
Patent Information
- Application Number
- CN202423069161.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing PVC top-pull pipe fittings are prone to radial misalignment, resulting in non-collinear axes and unstable connections. Furthermore, traditional production methods are energy-intensive and time-consuming.
It adopts a double-layer pipe design with an inner and outer pipe gap fit, a limiting component to fix the outer pipe, annular groove and annular limiting component nesting to restrict pipe movement, sealing ring to fill the gap, and connection method to replace snap-fit connection.
This avoids radial offset of pipe fittings, improves the stability and sealing of the piping system, and reduces production energy consumption and time.
Smart Images
Figure CN223609644U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the top -drawn pipe technical field, more particularly, relate to a spliced top pipe. BACKGROUND
[0002] In the pipe jacking construction, need to help the jacking force that the jacking equipment generates, overcome the friction of pipe and surrounding soil, and pipe is jacked into the soil according to the designed gradient, and earthwork is transported away, and after a section of pipe is completed and jacked into the soil layer, the second section of pipe continues to jacking, and its principle is to use the thrust of main jacking cylinder and pipe, relay etc., to push the tool pipe or heading machine from the construction well through the soil layer to the receiving pit, and the pipe is buried between two construction wells after the tool pipe or heading machine.
[0003] At present, the top -drawn pipe of polyolefin material is common, but the production of the top -drawn pipe of polyolefin material needs to be wound into shape, and it takes a long time and consumes a lot of energy, which is not conducive to mass production, and the top -drawn pipe of PVC material only needs to be extruded into shape using a special mold, which is short in production time and low in energy consumption, but the PVC material is brittle, and if the buckle connection is used between the pipe units, tooth collapse is easy to occur, so that radial deviation occurs between the pipe units, and the connection is not stable, and the working environment of the construction well has more moisture, and the connection between the pipe units is easy to loosen using PVC glue, and radial deviation occurs, the pipe units of the PVC top -drawn pipe in the prior art are easy to produce radial deviation, so that the axes of the pipe units are not collinear, and the stability is reduced. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the problem that the pipe units of the prior art PVC top -drawn pipe are easy to produce radial deviation, provides a spliced top pipe, avoids that the pipe units of the PVC top -drawn pipe produce radial deviation, so that the axis of the pipe unit is not collinear, and the pipe units are stably connected.
[0005] To solve the above technical problems, the utility model adopts the technical scheme that:
[0006] Provide a spliced top pipe, including a plurality of sequentially spliced pipe units, each pipe unit includes inner tube, outer tube and limiting piece, the limiting piece is installed on the outer wall of the inner tube, the outer diameter of the limiting piece is greater than the outer diameter of the inner tube, the outer tube is provided with first installation slot in one end, the outer tube is sleeved on the outside of the inner tube, the limiting piece is at least partially located in the first installation slot, the limiting piece and the inner wall of the first installation slot are in abutment, and the inner tube and the outer wall of the outer tube of adjacent pipe unit are gap fit.
[0007] The utility model discloses a spliced top pipe, in the construction process, the operator first top into the soil layer of first section pipe unit, then uses the top pipe machine and top into the second section pipe unit alignment first section pipe unit, because every pipe unit is divided into two layers of inside and outside, and the limiting piece is fixed on the inner tube outer wall, therefore limiting piece can resist the outer layer pipe, and the movement of outer tube is limited in the axial direction, therefore the operator can use the top pipe machine and hold one end of outer tube, thereby drive the inner tube and realize splicing with the last pipe unit, and the clearance fit between the inner tube and the last section pipe unit is relatively easy to install, the design of two layers of pipe material, on the one hand, the inner tube and outer tube limit each other, avoid producing radial deviation, satisfy the requirement of axial line collinear, on the other hand, the pressure-bearing capacity of top pull pipe is better, improve the stability of pipeline system, and the connecting mode between the pipe unit of top pull pipe replaces the traditional buckle connection, avoids the tooth collapse of pipe unit and causes radial deviation, and the connecting effect is more stable.
[0008] Further, the outer wall of the inner tube is provided with a groove, the limiting piece is installed in the groove, and the two ends of the limiting piece in the axial direction are in abutment with the inner wall of the groove. The two ends of the limiting piece in the axial direction abut against the inner wall of the groove, limiting the movement of the limiting piece in the axial direction, and the limiting piece itself can be fixed. Therefore, part of the limiting piece higher than the groove is installed in the first installation groove and abuts against the outer tube, limiting the movement of the outer tube in the axial direction. The limiting piece is installed in the groove, and the installation stability of the limiting piece is better, and the limiting piece does not move relative to the inner tube.
[0009] Further, the groove is an annular groove, and the limiting piece is annular, and the limiting piece is nested in the annular groove. The limiting piece is annular, and the groove is also annular. The limiting piece is nested outside the groove, so it can limit the movement of the limiting piece in the radial direction, and the stability is better. At the same time, the annular limiting piece has a larger contact area with the outer tube than the block-shaped limiting piece, can withstand greater pressure of the outer tube, and has higher strength.
[0010] Further, the outer tube is provided with a second installation groove at an end away from the first installation groove in the axial direction, and the inner wall of the second installation groove is in clearance fit with the limiting piece of the adjacent pipe unit. The limiting piece is partially installed in the second installation groove of the adjacent pipe unit, so that the splicing between the two adjacent pipe units is more firm.
[0011] Further, the two ends of the outer tube of each pipe unit are in abutment with the outer tubes of two adjacent pipe units respectively, and the two ends of the inner tube of each pipe unit are in abutment with the inner tubes of two adjacent pipe units respectively. The contact area of the two adjacent pipe units in the axial direction is increased, and the pressure-bearing capacity of the entire top pull pipe in the axial direction is enhanced.
[0012] Further, the inner tube is divided into a fixed segment and a splicing segment by the limiting piece in the axial direction, the fixed segment is connected with the outer tube, the splicing segment is gap-fitted with the outer tube of the adjacent pipe unit, and the length of the fixed segment in the axial direction is longer than the length of the splicing segment in the axial direction. The contact area between the inner tube and the outer tube of the same pipe unit is larger, and the stability between the inner tube and the outer tube and the radial pressure bearing capacity are better.
[0013] Further, the outer wall of the splicing segment is fixed with a sealing ring, and the sealing ring is used for sealing between two adjacent pipe units. Since the inner tube is gap-fitted with the outer tube of the adjacent pipe unit, the sealing ring is compressed during the splicing of the two adjacent pipe units, and the fitting gap between the two pipe units is filled, thereby improving the sealing performance of the pipeline.
[0014] Further, the material of the sealing ring is rubber. The rubber has high elasticity, so it can be deformed by being pressed by the two pipe units, and the rubber has good waterproof performance, thereby ensuring the sealing performance between the two adjacent pipe units.
[0015] Further, the materials of the inner tube and the outer tube are both PVC materials. Compared with the polyolefin material used in the traditional top-pulling pipe, the PVC material has higher modulus, and under the same caliber specification, the PVC building block type pipe has higher ring stiffness than the ordinary polyolefin top-pulling pipe. Meanwhile, the PVC building block type pipe is directly formed by extrusion molding, which can greatly save the processing time of winding molding compared with the polyolefin top-pulling pipe, thereby reducing the energy consumption cost of the machine.
[0016] Further, the material of the limiting piece is iron. Since the limiting piece needs to bear a large pressure applied by the outer tube, if the strength of the limiting piece is low, brittle fracture may occur. The limiting piece made of iron has high strength and can bear a larger pressure.
[0017] Compared with the prior art, the utility model has the advantages that:
[0018] 1. The limiting piece can resist the outer tube and limit the movement of the outer tube in the axial direction, so that pushing one end of the outer tube can drive the inner tube to be spliced with the previous pipe unit. The design of the two-layer pipe material can prevent the radial deviation between the inner tube and the outer tube, meet the requirement of the axial line being collinear, and improve the stability of the pipeline system. The connection mode between the top-pulling pipe units replaces the traditional buckle connection, avoids the radial deviation caused by the collapse of the pipe unit, and has more stable connection effect.
[0019] 2. The annular groove and the annular limiting piece are arranged, so that the limiting piece is tightly sleeved on the outer portion of the inner tube and has better stability.
[0020] 3. The sealing ring is arranged, the sealing ring can be compressed, and the matching gap between the two pipe units is filled, so that the sealing performance of the pipeline is improved. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 Fig. 1 is a structural schematic diagram of an embodiment 1 of a spliced top pipe;
[0022] Figure 2 Fig. 2 is a structural schematic diagram of an embodiment 2 of a spliced top pipe;
[0023] Figure 3 Fig. 3 is a partial enlarged view of the A position of Fig. 1; Figure 2
[0024] Fig. 4 is a structural schematic diagram of an embodiment 3 of a spliced top pipe. Figure 4 In the drawings: 100, inner pipe; 110, groove; 120, spliced section; 121, sealing ring; 130, fixed section; 200, outer pipe; 210, first mounting groove; 220, second mounting groove; 300, limiting piece; 310, protruding block.
[0025] DETAILED DESCRIPTION
[0026] The utility model will be further described below in combination with specific embodiments. Among them, the drawings are only used for example description, and the representation is only a schematic diagram, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures in the drawings and their description can be omitted.
[0027] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore the positional relationship description in the drawings is only used for example description, and cannot be understood as the limitation of the patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0028] Embodiment one
[0029] A spliced top pipe, such as Figure 1 and Figure 3 As shown, the pipe jacking machine comprises a plurality of sequentially spliced pipe units, each of which comprises an inner pipe 100, an outer pipe 200 and a limiting piece 300, the outer wall of the inner pipe 100 is provided with an annular groove 110, the limiting piece 300 is annular, the limiting piece 300 is nested in the groove 110, the two ends of the limiting piece 300 in the axial direction are in abutment with the inner wall of the groove 110, the outer diameter of the limiting piece 300 is greater than the outer diameter of the inner pipe 100, one end of the outer pipe 200 is provided with a first mounting groove 210, the first mounting groove 210 is an annular groove, the outer pipe 200 is sleeved on the outside of the inner pipe 100, the limiting piece 300 is located in the first mounting groove 210, the two ends of the part of the limiting piece 300 extending out of the groove 110 are in abutment with the inner wall of the first mounting groove 210 and the outer pipe 200 of the adjacent pipe unit respectively, and the inner pipe 100 and the outer pipe 200 of the adjacent pipe unit are in clearance fit.
[0030] The working principle of the embodiment is as follows:
[0031] The utility model discloses a splicing type jacking pipe, because the limiting piece 300 is annular, the groove 110 is also annular, and the limiting piece 300 is nested on the outside of the groove 110, therefore the annular groove 110 can limit the movement of the limiting piece 300 in the radial direction and the axial direction, the fixing of the limiting piece 300 is realized, in the construction process, the operator first jacks the first pipe unit into the soil layer, then uses the pipe jacking machine to align the second pipe unit and jacks into the first pipe unit, because each pipe unit is divided into two layers of inner and outer, the limiting piece 300 can abut against the outer layer pipe and limit the movement of the outer pipe 200 in the axial direction, therefore the operator can use the pipe jacking machine to jack against one end of the outer pipe 200, thereby driving the inner pipe 100 to splice with the previous pipe unit, the inner pipe 100 and the previous pipe unit are in clearance fit, and it is relatively easy to install, the connecting mode between the pipe units replaces the traditional buckle connection, avoids the collapse of the pipe material, the connecting effect is more stable, simultaneously, the design of the two layers of pipe materials makes the pressure-bearing capacity of the pipe jacking machine better, and the stability of the pipeline system is improved.
[0032] Embodiment two
[0033] The embodiment is a second embodiment of a splicing type jacking pipe, Figure 2 and 3As shown, the pipe assembly comprises a plurality of pipe units connected in sequence, each pipe unit comprising an inner pipe 100, an outer pipe 200 and a limiting piece 300, the outer wall of the inner pipe 100 is provided with an annular groove 110, the limiting piece 300 is annular, the limiting piece 300 is nested in the groove 110, the two ends of the limiting piece 300 in the axial direction are in abutment with the inner wall of the groove 110, the outer diameter of the limiting piece 300 is greater than the outer diameter of the inner pipe 100, the two ends of the outer pipe 200 are respectively provided with a first mounting groove 210 and a second mounting groove 220, the first mounting groove 210 and the second mounting groove 220 are both annular grooves, the outer pipe 200 is sleeved on the outside of the inner pipe 100, the limiting piece 300 is partially located in the first mounting groove 210 and partially located in the second mounting groove 220 of the adjacent pipe unit, the two ends of the limiting piece 300 extending out of the groove 110 are in abutment with the inner wall of the first mounting groove 210 and the inner wall of the second mounting groove 220 of the adjacent pipe unit, respectively, the inner pipe 100 is in clearance fit with the inner wall of the outer pipe 200 of the adjacent pipe unit, the two ends of the outer pipe 200 of each pipe unit are in abutment with the outer pipes 200 of the two adjacent pipe units, respectively, and the two ends of the inner pipe 100 of each pipe unit are in abutment with the inner pipes 100 of the two adjacent pipe units, respectively.
[0034] The working principle of the embodiment is as follows:
[0035] The limiting piece 300 is partially mounted in the second mounting groove 220 of the adjacent pipe unit, so that the connection between the two adjacent pipe units is more firm. The two ends of the outer pipe 200 of each pipe unit are in abutment with the outer pipes 200 of the two adjacent pipe units, respectively, and the two ends of the inner pipe 100 of each pipe unit are in abutment with the inner pipes 100 of the two adjacent pipe units, respectively, thereby increasing the contact area of the two adjacent pipe units in the axial direction and enhancing the pressure-bearing capacity of the whole in the axial direction.
[0036] The remaining features and working principles of the embodiment are consistent with those of embodiment 1.
[0037] Embodiment three
[0038] The third embodiment of the embodiment is a spliced pipe, as shown in Figure 1 and Figure 4As shown, the device includes several sequentially connected pipe units. Each pipe unit includes an inner pipe 100, an outer pipe 200, and a limiting member 300. The limiting member 300 includes four protrusions 310 evenly distributed circumferentially. The limiting member 300 is fixed to the outer wall of the inner pipe 100. In this embodiment, the limiting member 300 is fixed by welding. Other fixing methods include threaded connection, integral molding, etc. The outer pipe 200 has four first mounting grooves 210 and four second mounting grooves 220 corresponding to the protrusions 310 at both ends. The outer pipe 200 is fitted onto the inner pipe 100. Externally, part of the protrusion 310 is located in the first mounting groove 210, and the other part is located in the second mounting groove 220 of the adjacent pipe unit. The two ends of the protrusion 310 abut against the inner wall of the first mounting groove 210 and the inner wall of the second mounting groove 220 of the adjacent pipe unit, respectively. The inner tube 100 is clearance-fitted with the inner wall of the outer tube 200 of the adjacent pipe unit. The two ends of the outer tube 200 of each pipe unit abut against the outer tubes 200 of two adjacent pipe units, respectively. The two ends of the inner tube 100 of each pipe unit abut against the inner tubes 100 of two adjacent pipe units, respectively.
[0039] In this embodiment, the limiting member 300 uses four protrusions 310, each of which abuts against the inner wall of a first mounting groove 210, which can also limit the outer tube 200 and prevent the outer tube from moving axially.
[0040] The remaining features and working principles of this embodiment are consistent with those of Embodiments 1 and 2.
[0041] Example 4
[0042] This embodiment is a fourth embodiment of a spliced pipe jacking system. This embodiment is similar to Embodiment 1, except that, as shown in the following... Figure 2 As shown, the inner tube 100 is divided into a splicing section 120 and a fixed section 130 along the axial direction with the limiting member 300 as the dividing point. The fixed section 130 is connected to the outer tube 200. The splicing section 120 is clearance-fitted with the outer tube 200 of the adjacent pipe fitting unit. The axial length of the fixed section 130 is longer than the axial length of the splicing section 120. A sealing ring 121 is fixed on the outer wall of the splicing section 120. In this embodiment, the sealing ring 121 is made of rubber, but it can also be made of other highly elastic waterproof materials. The sealing ring 121 is used for sealing between two adjacent pipe fitting units. The inner tube 100 and the outer tube 200 are both made of PVC, and the limiting member 300 is made of iron.
[0043] The working principle of this embodiment is as follows:
[0044] Since the inner tube 100 and the outer tube 200 of the adjacent pipe unit are in a clearance fit, the sealing ring 121 is compressed during the splicing of two adjacent pipe units, filling the fit gap between the two pipe units, improving the sealing of the pipeline, and the PVC material has a higher modulus than the traditional polyolefin material used in the top-pulling pipe, so that the PVC building block type pipe has higher ring stiffness than the ordinary polyolefin top-pulling pipe under the same caliber specification, the PVC building block type pipe is directly extruded by a die, compared with the polyolefin top-pulling pipe, the processing time of winding forming can be greatly saved, and the machine energy consumption cost is reduced, the limiting piece 300 made of iron has high strength and can withstand greater pressure, and brittle fracture is avoided.
[0045] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the present application.
[0046] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A spliced pipe, characterized by The application relates to a pipe unit which comprises a plurality of pipe units which are connected in sequence, each pipe unit comprising an inner pipe (100), an outer pipe (200) and a limiting piece (300), the limiting piece (300) being installed on the outer wall of the inner pipe (100), the outer diameter of the limiting piece (300) being larger than the outer diameter of the inner pipe (100), one end of the outer pipe (200) being provided with a first installation groove (210), the outer pipe (200) being sleeved on the outer portion of the inner pipe (100), the limiting piece (300) being at least partially located in the first installation groove (210), the limiting piece (300) abutting against the inner wall of the first installation groove (210), and the inner pipe (100) and the inner wall of the outer pipe (200) of the adjacent pipe unit being gap-fitted.
2. A spliced pipe according to claim 1, wherein, The outer wall of the inner pipe (100) is provided with a groove (110), the limiting piece (300) is installed in the groove (110), and the two ends of the limiting piece (300) in the axial direction abut against the inner wall of the groove (110) at the same time.
3. A spliced pipe according to claim 2, wherein, The groove (110) is an annular groove, and the limiting piece (300) is annular, and the limiting piece (300) is nested in the annular groove.
4. The spliced pipe of claim 1, wherein, The outer pipe (200) is provided with a second installation groove (220) at one end which is axially away from the first installation groove (210), and the inner wall of the second installation groove (220) and the limiting piece (300) of the adjacent pipe unit are gap-fitted.
5. A spliced pipe according to claim 4, wherein, The two ends of the outer pipe (200) of each pipe unit abut against the outer pipes (200) of two adjacent pipe units respectively, and the two ends of the inner pipe (100) of each pipe unit abut against the inner pipes (100) of two adjacent pipe units respectively.
6. A spliced pipe according to claim 1, wherein The inner pipe (100) is divided into a splicing section (120) and a fixing section (130) in the axial direction with the limiting piece (300) as a dividing point, the fixing section (130) is connected with the outer pipe (200), the splicing section (120) is gap-fitted with the outer pipe (200) of the adjacent pipe unit, and the length of the fixing section (130) in the axial direction is longer than the length of the splicing section (120) in the axial direction.
7. A spliced pipe according to claim 6, wherein, The outer wall of the splicing section (120) is fixed with a sealing ring (121), and the sealing ring (121) is used for sealing between two adjacent pipe units.
8. A spliced pipe according to claim 7, wherein, The material of the sealing ring (121) is rubber.
9. A spliced pipe according to any one of claims 1 to 8, wherein, The materials of the inner pipe (100) and the outer pipe (200) are PVC materials.
10. A spliced pipe according to any one of claims 1 to 8, wherein, The material of the limiting piece (300) is iron.