A variable span groove making machine for bidirectional symmetrical construction

Abstract

The present invention discloses a variable-span trough-making machine for bidirectional symmetrical construction, comprising: a main frame, a leg system, an outer rib, an inner mold system, an outer mold system, and an auxiliary crane. A cantilever beam is provided on the outer side of the main frame, the outer rib is suspended on the cantilever beam, the leg system is arranged below the main frame, the inner mold system is arranged below the main frame and is spaced apart from the leg system, and the auxiliary crane is arranged at the top of the main frame; the outer mold system comprises an outer mold, an outer mold support rod, and an outer mold walkway, the outer mold comprises a standard section template and a gradient section template, the standard section template and the gradient section template are both attached and installed on the outer rib through the outer mold support rod to form the outer contour of the aqueduct. The variable-span trough-making machine for bidirectional symmetrical construction of the present invention can realize bidirectional symmetrical construction and variable-span construction at the same time, and is suitable for construction on lines with limited equipment assembly site or variable spans.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale water conservancy aqueduct construction equipment, and in particular to a variable-span trough making machine for bidirectional symmetrical construction. Background Art

[0002] With the deepening of water conservancy construction in my country, more and more artificial ground river sections have emerged. Usually, ground rivers use aqueducts as water channels. These large-tonnage water conservancy aqueducts are made of reinforced concrete, and the piers bear the loads of water and aqueducts.

[0003] Aqueducts are used as conveying channels. They are overhead water troughs that carry water across rivers, valleys, depressions and roads. They are one of the main buildings in water conveyance projects and play a vital role in water conveyance projects. Aqueducts are divided into two types: cast-in-place and prefabricated. Prefabricated aqueducts must be hoisted, which is difficult to construct and requires an open site and convenient transportation. Cast-in-place aqueducts are high-altitude operations without terrain and traffic constraints and have wide applicability. Therefore, it is very necessary to develop an economical, practical and efficient cast-in-place aqueduct construction equipment.

[0004] Although the commonly used full-frame support method is mature and widely used, its shortcomings are also unavoidable. Because the aqueduct is large in size, the racks are divided into many blocks, and the supporting structures are staggered, a crane is needed to cooperate with a large number of people to complete the template assembly, support and disassembly processes, which invisibly increases the safety risk of construction workers working at heights. At the same time, the construction efficiency is low, wasting a lot of manpower, material resources and funds. In addition, the inner and outer templates are fixed by bolting through the trough body on both sides of the aqueduct. After the template is removed, the pulling holes will be left on both sides of the trough body, which is easy to cause corrosion of steel bars and water leakage in the later stage, resulting in unstable quality of the aqueduct.

[0005] Chinese patent CN103526697A discloses a self-propelled mobile formwork for the construction of double rectangular hydraulic aqueducts. The patent adopts a mobile formwork instead of a full-frame support, but the patent cannot be used to construct aqueducts in complex terrain, especially aqueducts involving multiple spans on one line. Summary of the invention

[0006] The object of the present invention is to provide a groove making machine capable of bidirectional construction and variable span construction.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A variable-span groove making machine for bidirectional symmetrical construction comprises: a main frame, a leg system, external ribs, an inner mold system, an outer mold system, and an auxiliary crane.

[0009] A cantilever beam is provided on the outside of the main frame, the outer rib is suspended on the cantilever beam, the outrigger system is provided below the main frame, the inner mold system is provided below the main frame and is spaced apart from the outrigger system, and the auxiliary crane is provided at the top of the main frame;

[0010] The outer mold system includes an outer mold, outer mold support rods and an outer mold walkway. The outer mold includes a standard section template and a gradient section template. The standard section template and the gradient section template are both attached and installed on the outer ribs through the outer mold support rods. The gradient section templates are spaced apart in front and back, and both ends of the standard section template are respectively connected to the gradient section template to form the outer contour of the aqueduct.

[0011] In some embodiments, a rotating assembly is provided between the outer rib and the cantilever beam, and the outer rib rotates relative to the cantilever beam. The outer rib controls the opening and closing of the outer mold by driving the outer mold to rotate.

[0012] In some embodiments, the main frame, the inner mold system and the outer mold system are all front-to-back symmetrical structures.

[0013] In some embodiments, the inner mold system includes an inner beam, an inner mold, a running leg, a lower running assembly, and a hanging running assembly. The inner beam is connected to the main frame, the inner mold is suspended on the inner beam, one end of the running leg is connected to the inner beam, and the other end is connected to the lower running assembly. The hanging running assembly is arranged below the main frame and is used to hang the inner mold system for running.

[0014] In some embodiments, the leg system includes a first leg, a second leg, a third leg and a fourth leg, and the first leg, the second leg, the third leg and the fourth leg are sequentially installed at the bottom of the main frame.

[0015] In some embodiments, the first leg is provided with mounting positions at the front end and the rear end of the main frame, and the fourth leg is provided with mounting positions at the front end and the rear end of the main frame.

[0016] In some embodiments, the first leg includes a first cross beam, a first column, a cross brace, and a first lifting assembly. The first cross beam is connected to the main frame. There are two first columns, which are spaced apart. The first columns include an upper column, a middle column, and a lower column. The top end of the first column is connected to the first cross beam, and the bottom end is provided with a first lifting assembly. The first lifting assembly is used to adjust the height of the first leg.

[0017] In some embodiments, the second leg includes a second cross beam, a second column, a transverse movement assembly, a longitudinal movement assembly, and a second lifting assembly. The second cross beam is connected to the main frame via the transverse movement assembly and the longitudinal movement assembly. The second leg can move longitudinally or transversely relative to the main frame. The top end of the second column is connected to the second cross beam, and a second lifting assembly is provided at the bottom end thereof. The third leg has the same structure as the second leg.

[0018] The reverse construction method of the variable-span groove making machine for bidirectional symmetrical construction of the present invention comprises:

[0019] The first step is to remove the first leg from the front guide beam and the fourth leg from the rear guide beam;

[0020] The second step is, if there is no aqueduct behind the slot making machine, the first leg is transported to the rear and installed on the rear guide beam; if there is an aqueduct behind the slot making machine, the center column of the first leg is removed, transported to the rear and installed on the rear guide beam;

[0021] The third step is to transfer the fourth leg to the front and install it on the front guide beam;

[0022] The fourth step is to adjust the reverse construction into place and then the grooving machine will carry out reverse construction.

[0023] The variable span construction method of the variable span groove making machine for bidirectional symmetrical construction of the present invention comprises:

[0024] The first step is to remove the rear end gradient section template;

[0025] The second step is to increase the number of standard section templates at the rear end of the existing standard section template when the span is changed from a small span to a large span, and to reduce the number of standard section templates at the rear end of the existing standard section template when the span is changed from a large span to a small span;

[0026] The third step is to install the disassembled rear gradient section template behind the standard section template;

[0027] The third step is to adjust the outer formwork into place and carry out the variable span construction.

[0028] The beneficial effects of the present invention are:

[0029] The modular arrangement of the outer mold of the variable-span grooving machine for bidirectional symmetrical construction of the present invention only requires increasing or decreasing the number of standard sections, and can adapt to different spans without the assistance of an external crane to achieve variable-span construction.

[0030] The main frame, outer mold system and inner mold system of the variable-span groove making machine for bidirectional symmetrical construction of the present invention are front-to-back symmetrical structures. The first leg and the fourth leg can be replaced front-to-back, and the second leg and the third leg have the same structure, so that the front-to-back exchange can be achieved without rotating the groove making machine body, thereby realizing bidirectional symmetrical construction.

[0031] The variable-span grooving machine for bidirectional symmetrical construction of the present invention does not need to set up temporary construction access roads on the line during construction, and does not need to be equipped with temporary supports, lifting cranes, etc. It has high work efficiency, low cost, few environmental requirements, low environmental pollution, and strong safety. It is suitable for construction on lines with limited equipment assembly sites or variable spans. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a variable-span groove making machine for bidirectional symmetrical construction according to an embodiment of the present invention;

[0033] Figure 2 This is a main frame front view of an embodiment of the present invention;

[0034] Figure 3 A side view of the main frame of an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a first leg according to an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of a second leg according to an embodiment of the present invention;

[0037] Figure 6 is a schematic diagram of a fourth leg according to an embodiment of the present invention;

[0038] Figure 7 It is a side sectional view of a casting state of a variable-span trough making machine for bidirectional symmetrical construction according to an embodiment of the present invention;

[0039] Figure 8 It is a side cross-sectional view of a variable-span slotting machine for bidirectional symmetrical construction in a through-hole state according to an embodiment of the present invention;

[0040] Fig. 9 Schematic diagram of the outer mold of an embodiment of the present invention;

[0041] Fig.10 Schematic diagram of an auxiliary crane according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings.

[0043] The variable-span groove making machine for bidirectional symmetrical construction according to the embodiment of the present invention comprises: a main frame 1 , a leg system, an outer rib 2 , an inner mold system 9 , an outer mold system 3 , and an auxiliary crane 8 .

[0044] Specifically, Figure 1-Figure 3As shown, the main frame 1 includes two main beams 11, two front guide beams 12, and two rear guide beams 13. The main beam 11 is a box-type main beam, and the two main beams 11 are distributed in parallel and at intervals. The two front guide beams 12 are respectively fixedly connected to the front ends of the main beams 11, and the two rear guide beams 13 are respectively connected to the rear ends of the main beams 11. A plurality of connecting beams 14 are provided between the main beams 11, between the front guide beams 12, and between the rear guide beams 13. Cantilever beams 15 are also provided on both sides of the main beam 11, and the cantilever beams 15 are distributed correspondingly to the connecting beams 14.

[0045] like Figure 7 As shown, there are two outer ribs 2, which are correspondingly suspended on the cantilever beam 15. A rotating assembly 21 is provided between the outer rib 2 and the cantilever beam 15. The rotating assembly 21 is a cylinder, which is used to drive the outer rib 2 to rotate along the hanging point. The outer rib 2 is attached with an outer mold system 3.

[0046] like Figure 7 , Fig. 9 As shown, the outer mold system 3 includes an outer mold 32, an outer mold support rod 31 and an outer mold walkway 33. The outer mold 32 includes a standard section 321 and a gradient section 322. The gradient section 322 is located at the front and rear ends of the outer mold, and the standard section 321 is located between the two gradient sections 322. The outer mold 32 is fixedly connected to the inner side of the outer rib 2 through the outer mold support rod 31 to form the outer contour of the aqueduct.

[0047] like Figure 7 , Figure 8 As shown, the inner mold system 9 includes an inner beam 91, an inner mold 92, a running leg 93, a hanging running assembly 95, and a lower running assembly 96. The inner beam 91 is connected to the main frame 1 through an inner beam suspension rod 94. The inner mold 92 is suspended below the inner beam. The running leg 93 is installed on the inner beam 91 through a pin shaft. The running legs are divided into two groups and are symmetrically distributed on both sides of the inner beam 91. The running legs are slidably matched with the inner beam 91, and the lower running assembly 96 is installed at the bottom thereof. The lower running assembly is a roller. The inner mold 92 is provided with a movable block section below the lower running assembly 96. When running through a hole is required, a running track assembly 97 is laid under the inner cavity of the cast aqueduct, and the movable block section is opened at the same time, and the running leg 93 moves downward until the lower running assembly 96 is matched with the running track assembly 97. The top end of the hanging running component 95 is slidably matched with the main frame 1, and the bottom end is connected to the inner beam 91, which is used for hanging the inner mold system 9 through the hole in the precast span.

[0048] The main frame 1, the outer ribs 2, the outer mold system 3 and the inner mold system 9 are all front-to-back symmetrical structures.

[0049] The leg system includes a first leg 4, a second leg 5, a third leg 6 and a fourth leg 7. Figure 5As shown, the first leg includes a first crossbeam 41, a first column 42, a cross brace 43, and a first lifting assembly 44. The first crossbeam 41 is installed on the front guide beam 12. There are two first columns 42, which are parallel and spaced at both ends of the first crossbeam. The first column has three sections, namely an upper column, a middle column and a lower column. The cross brace is arranged between the two upper columns and between the two lower columns. A first lifting assembly 44 is also arranged at the bottom end of the lower column. The first lifting assembly 44 is a lifting cylinder used to adjust the height of the first leg. The corresponding position of the rear guide beam 13 is also provided with a mounting position for the first leg 4. When the grooving machine is in forward construction, the first leg 4 is installed on the front guide beam 12. When the grooving machine is in reverse construction, the first leg is installed on the rear guide beam 13.

[0050] like Figure 6 As shown, the second leg 5 includes a longitudinal movement component 51, a transverse movement component 53, a second cross beam 54, a second column 55, and a second lifting component 56. The longitudinal movement component 51 is a longitudinal movement oil cylinder, the top of which is slidably matched with the main frame 1, and the bottom of which is fixedly connected to the transverse movement component 53. The transverse movement component 53 is a transverse movement oil cylinder, the bottom of which is fixedly connected to the second cross beam 54. The second leg 5 can achieve longitudinal or transverse movement relative to the main frame 1 through the longitudinal movement component 51 and the transverse movement component 53. A hanging component 52 is also provided on the second cross beam 54. The top of the hanging component is slidably matched with the main frame 1, and the bottom is fixedly connected to the second cross beam 54, which is used to hang the second leg 5 on the main frame 1 when passing through the hole by itself. There are two second columns 55, which are respectively arranged at the bottom ends of the second cross beam 54. The bottom end of the second column 55 is provided with a second lifting component 56, which is a lifting oil cylinder and is used to adjust the height of the whole machine.

[0051] The third leg 6 has the same structure as the second leg 5 .

[0052] like Figure 7 As shown, there are two fourth legs 7, both of which are single column legs, the top ends of which are fixedly connected to the two sides of the rear end of the rear guide beam 13, and the bottom ends of which are provided with a first running wheel box. The fourth leg 7 is an unloaded leg when the groove making machine is running through the hole.

[0053] The auxiliary crane 8 includes a frame 81, a second running wheel box 82, and an electric hoist 83. The frame 81 and the main frame 1 are slidably matched through the second running wheel box 82, and an electric hoist 83 is provided on one side of the frame 81. The auxiliary crane is used to disassemble and assemble the front guide beam 12 at the end of the span, and is also used to adjust the installation position of the standard section 321 and the gradual section 322 during the variable span construction.

[0054] According to the invention, the variable span groove making machine for bidirectional symmetrical construction, the hole passing and casting method thereof comprises the following steps:

[0055] In the first step, the inner beam suspension rod 94 is removed, the second leg 5 and the third leg 6 are lowered, the main frame 1 carrying the outer mold 32 is lowered for demoulding, the outer rib 2 is rotated outward, and the outer mold 32 is opened;

[0056] In the second step, the auxiliary crane 8 moves to the top of the third leg, and the longitudinal movement assembly 51 of the second leg 5 and the third leg 6 pushes the main beam 11 to move forward longitudinally by 22 meters, and the auxiliary crane 8 moves backward synchronously and is always located above the third leg 6;

[0057] Step 3: The third leg 6 is vacated, moves to the rear of the second leg 5 and supports it, the second leg 5 is vacated, moves to the rear of the first leg 4 and supports it, and the auxiliary crane 8 moves forward to the top of the third leg 6;

[0058] In the fourth step, the longitudinal moving assembly 51 of the second leg 5 and the third leg 6 pushes the main beam 11 to move forward 23 meters, the hole is completed, the second leg 5 and the third leg 6 are raised, the whole machine is adjusted to the beam making elevation, the outer mold is closed, the web and bottom plate steel bars are tied at the standard section 321, the outer rib tie rod is installed, the inner beam is driven by the hanging running assembly 95 and the lower running assembly 96 and carries the inner mold forward 45 meters, the inner beam hanging rod 94 is installed, the running leg 93 is moved up, the inner mold movable block section is closed to the casting state, the end mold is installed, and the casting begins. After the casting is completed, the first step to the fourth step are repeated until the entire aqueduct casting is completed.

[0059] When the variable span groove making machine for bidirectional symmetrical construction needs to be constructed in reverse, the following steps are required:

[0060] The first step is to remove the first leg 4 from the front guide beam 12;

[0061] The second step is to remove the fourth leg 7 from the rear guide beam 13;

[0062] The third step is, if there is no aqueduct at the rear, transfer the first leg 4 and install it on the corresponding installation position of the rear guide beam 13; if there is an aqueduct at the rear, remove the middle column of the first leg 4 and install the first leg on the corresponding installation position of the rear guide beam 13;

[0063] In the fourth step, the whole machine is turned around and the subsequent through-hole pouring operation can be carried out normally.

[0064] When the variable span groove making machine for bidirectional symmetrical construction needs to change span from a large span to a small span, it only needs to remove part of the standard section 321 and splice the remaining outer molds to achieve small span construction. When the variable span construction is from a small span to a large span, it only needs to add the standard section outer molds to achieve large span construction.

[0065] This embodiment does not impose any formal limitation on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0066] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0067] If the words "first", "second", etc. are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only to facilitate the description of the present invention and simplify the description. Unless otherwise stated, the above words have no special meaning.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A variable span groove making machine for bidirectional symmetrical construction, comprising: A main frame, an outrigger system, an outer rib, an inner mold system, an outer mold system, and an auxiliary crane. A cantilever beam is provided on the outer side of the main frame, and the outer rib is suspended on the cantilever beam. The outrigger system is provided below the main frame. The inner mold system is provided below the main frame and is spaced apart from the outrigger system. The auxiliary crane is provided at the top of the main frame. The invention is characterized in that the outer mold system comprises an outer mold, an outer mold support rod and an outer mold walkway, the outer mold comprises a standard section template and a gradient section template, the standard section template and the gradient section template are both attached and installed on the outer rib through the outer mold support rod, the gradient section template is spaced apart in front and back, and the two ends of the standard section template are respectively connected to the gradient section template to form the outer contour of the aqueduct; The leg system comprises a first leg, a second leg, a third leg and a fourth leg, wherein the first leg, the second leg, the third leg and the fourth leg are sequentially mounted at the bottom of the main frame; The first leg is provided with mounting positions at the front end and the rear end of the main frame, and the fourth leg is provided with mounting positions at the front end and the rear end of the main frame; The third supporting leg has the same structure as the second supporting leg.

2. The variable-span groove making machine for bidirectional symmetrical construction according to claim 1 is characterized in that: A rotating assembly is provided between the outer rib and the cantilever beam, and the outer rib rotates relative to the cantilever beam. The outer rib drives the outer mold to rotate to control the opening and closing of the outer mold.

3. The variable-span groove making machine for bidirectional symmetrical construction according to claim 2 is characterized in that: The main frame, the inner mold system and the outer mold system are all front-to-back symmetrical structures.

4. The variable-span groove making machine for bidirectional symmetrical construction according to claim 3 is characterized in that: The inner mold system includes an inner beam, an inner mold, a running leg, a lower running assembly, and a hanging running assembly. The inner beam is connected to the main frame, and the inner mold is suspended on the inner beam. One end of the running leg is connected to the inner beam, and the other end is connected to the lower running assembly. The hanging running assembly is arranged below the main frame and is used to hang the inner mold system for running.

5. The variable-span groove making machine for bidirectional symmetrical construction according to claim 4 is characterized in that: The first leg includes a first crossbeam, a first column, a cross brace, and a first lifting assembly. The first crossbeam is connected to the main frame. There are two first columns, which are spaced apart. The first columns include an upper column, a middle column, and a lower column. The top end of the first column is connected to the first crossbeam, and the bottom end is provided with a first lifting assembly. The first lifting assembly is used to adjust the height of the first leg.

6. The variable-span groove making machine for bidirectional symmetrical construction according to claim 5, characterized in that: The second leg includes a second crossbeam, a second column, a transverse movement assembly, a longitudinal movement assembly, and a second lifting assembly. The second crossbeam is connected to the main frame through the transverse movement assembly and the longitudinal movement assembly. The second leg can move longitudinally or transversely relative to the main frame. The top end of the second column is connected to the second crossbeam, and the bottom end thereof is provided with a second lifting assembly.

7. According to the variable-span groove making machine for bidirectional symmetrical construction according to claim 6, the hole-passing and pouring method thereof comprises: The first step is to remove the inner beam hanger, lower the height of the second and third legs, lower the main frame carrying the outer mold to demould, rotate the outer ribs outward, and open the outer mold; In the second step, the auxiliary crane moves to the top of the third leg, and the longitudinal movement components of the second leg (5) and the third leg push the main beam (11) to move forward longitudinally by 22 meters, and the auxiliary crane moves backward synchronously and is always located above the third leg; Step 3: The third leg is freed from the air, and the crane moves to the rear of the second leg and supports it. The second leg is freed from the air, and the crane moves to the rear of the first leg and supports it. The auxiliary crane moves forward to the top of the third leg. In the fourth step, the longitudinal movement components of the second and third legs push the main beam forward 23 meters, the hole is completed, the second and third legs are raised, the whole machine is adjusted to the beam making elevation, the outer mold is closed, the web and bottom plate steel bars are tied at the standard section, the outer rib tie rods are installed, the inner beam is driven by the hanging running assembly and the lower running assembly and carries the inner mold forward 45 meters, the inner beam hanging rod is installed, the running legs are moved up, the inner mold movable block section is closed to the pouring state, the end mold is installed, and pouring begins; After pouring is completed, repeat steps one to four until the entire aqueduct is poured.

8. The variable-span groove making machine for bidirectional symmetrical construction according to claim 6, characterized in that: The reverse construction method and variable span construction method include: When the variable span slotting machine for bidirectional symmetrical construction needs to be processed at the rear, reverse construction is required, including: The first step is to remove the first leg from the front guide beam and the fourth leg from the rear guide beam; The second step is, if there is no aqueduct behind the slot making machine, the first leg is transported to the rear and installed on the rear guide beam; if there is an aqueduct behind the slot making machine, the center column of the first leg is removed, transported to the rear and installed on the rear guide beam; The third step is to transfer the fourth leg to the front and install it on the front guide beam; The fourth step is to adjust the reverse construction to the right position and then the groove making machine will perform reverse construction; When the span of the aqueduct changes, the variable span trench making machine for bidirectional symmetrical construction needs to be constructed with variable span, including: The first step is to remove the rear end gradient section template; The second step is to increase the number of standard section templates at the rear end of the existing standard section template when the span is changed from a small span to a large span, and to reduce the number of standard section templates at the rear end of the existing standard section template when the span is changed from a large span to a small span; The third step is to install the disassembled rear gradient section template behind the standard section template; The third step is to adjust the outer formwork into place and carry out the variable span construction.

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