An integral tunnel invert block mold

Abstract

The invention relates to an integral tunnel inverted arch block mold, comprising a bottom mold, two side molds and two end molds; a plurality of groups of slide rail assemblies respectively passing through two sides of the bottom mold are arranged in the bottom mold; the bottoms of the two end molds are respectively hinged to the two ends of the bottom mold; the two side molds are respectively located on the two sides of the bottom mold, and the bottoms are both arranged on the slide rail assemblies; a pair of first convex molds and two pairs of second convex molds are respectively arranged between the two side molds; a pair of the first convex molds are both hollow structures, and are opened at both ends, and notches are respectively arranged on both sides of the butt joint; a demoulding assembly and a telescopic mold are arranged in each of the first convex molds; the demoulding assembly is slidably arranged in the first convex mold; the telescopic mold is arranged on the demoulding assembly, and can pass through the notch to fit with the surface of the second convex mold; the invention can cast and form the inverted arch block at one time by arranging the first convex mold and the two second convex molds, and arranging the telescopic mold in the first convex mold, thereby greatly improving the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of tunnels, in particular to an integral tunnel invert block mould. Background Art

[0002] The tunnel boring machine (TBM) is a systematic, intelligent, and factory-based high-efficiency tunnel excavation construction machinery that can excavate a tunnel in one go and simultaneously complete the entire process of tunnel construction, including excavation and advancement, slag transportation, ventilation and dust removal, guidance control, support lining and advance treatment, wind, water, electricity and material supply, and realizes automated monitoring, making it suitable for tunnel construction in ultra-long underground caverns.

[0003] When a tunnel boring machine is used for tunnel excavation, reinforced concrete arch blocks are lined at the bottom of the tunnel. The reinforced concrete arch blocks are prefabricated by mold casting. For example, the prior art 201921362618.7 discloses a TBM tunnel arch block lining structure, in which a first cavity and two second cavities are provided inside the arch block, which pass through the front and rear end surfaces thereof, and a water outlet is provided between the two second cavities and the first cavity. This multi-body cavity form not only reduces the weight of the arch block and saves materials, but also fully increases the water-passing cross-section, thereby ensuring the drainage capacity of the tunnel. However, this multi-body cavity form has a complex structure, which makes it impossible for the existing arch block molds to be injection molded in one piece, and they all adopt a segmented casting method, which is time-consuming and labor-intensive, and greatly reduces production efficiency. Summary of the invention

[0004] The invention aims to provide an integral tunnel invert block mould in order to overcome the deficiencies of the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an integral tunnel inverted arch block mold, comprising a bottom mold, two side molds and two end molds; the upper end surface of the bottom mold is in a concave arc shape, and a plurality of groups of slide rail assemblies passing through the two sides of the bottom mold are arranged inside; the bottoms of the two end molds are respectively hinged to the two ends of the bottom mold through hinge assemblies; the two side molds are respectively located on the two sides of the bottom mold, and the bottoms are both arranged on the slide rail assemblies; a pair of first punches and two pairs of second punches are also respectively arranged between the two side molds; the pair of the first punches and the two pairs of the second punches are symmetrically placed along the center plane of the inverted arch block, and are respectively arranged on the two side molds; the pair of the first punches are used to form a first cavity on the inverted arch block; the two The second punches are used to form two second cavities on the inverted arch block; a pair of the first punches are hollow structures with openings at both ends, and notches are respectively provided on both sides of the joint; a demoulding assembly and a telescopic mold are provided in each of the first punches; the demoulding assembly is slidably arranged in the first punch along the width direction of the bottom mold; the two telescopic molds in a pair of the first punches are opposite and staggered; the telescopic molds are arranged on the demoulding assembly and can pass through the notch to fit with the surface of the second punch to form a water outlet on the inverted arch block; first connecting holes are provided on both sides of the bottom mold and both ends of the two end molds; and second connecting holes corresponding to the first connecting holes on the bottom mold and the end mold are respectively provided on the two side molds.

[0006] Preferably, the demolding assembly includes a slide seat slidably arranged at the bottom of the first punch, two groups of slide rail units arranged on the slide seat and placed parallel to the length direction of the bottom mold, and a connecting plate connecting the two groups of slide rail units; the inner end of the telescopic mold is arranged on the connecting plate, and at least half of the telescopic mold extends out of the inner side of the slide seat.

[0007] Preferably, each group of the slide rail units includes a first bracket, a second bracket and a slide rod; the first bracket and the second bracket are both arranged on a slide seat; an upper pulley is arranged on the first bracket; a lower pulley is arranged on the second bracket; the axis of the upper pulley is parallel to the axis of the lower pulley, and the upper pulley is higher than the lower pulley, and the height difference is the diameter of the slide rod; the slide rod is located between the upper pulley and the lower pulley, and is placed horizontally along the length direction of the bottom mold; the end of the slide rod close to the lower pulley is connected to the connecting plate.

[0008] Preferably, the telescopic mold has a hollow structure and an inner end is opened.

[0009] Preferably, the second male mold is a hollow structure, and an opening is provided at the connection with the side mold.

[0010] Preferably, each of the side molds is integrally injection molded with the first punch and the two second punches.

[0011] Preferably, the outer side surface of each of the side molds and the end mold is provided with criss-crossed reinforcing ribs.

[0012] Preferably, at least two hinge assemblies are provided at each end of the bottom mold; each of the hinge assemblies includes two support plates vertically arranged at the end of the bottom mold and a limit plate arranged at the upper ends of the two support plates; a limit groove is arranged on the limit plate; a connecting rod is arranged at the bottom of the end mold; the lower end of the connecting rod passes through the limit groove and is rotatably connected to the two support plates through a support shaft.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] The present invention provides a pair of first convex molds and two pairs of second convex molds, and provides two opposite and staggered telescopic molds in the pair of first convex molds, so as to respectively form a first cavity, two second cavities and two water outlets on the inverted arch block, thereby enabling the inverted arch block to be cast and formed at one time, thereby greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0016] Attached Figure 1 It is a structural schematic diagram of the integral tunnel invert block mold of the present invention in a mold-closing state;

[0017] Attached Figure 2 It is a structural schematic diagram of the integral tunnel invert block mold of the present invention in the mold opening state;

[0018] Attached Figure 3 It is a schematic diagram of the structure of the demoulding component and the telescopic mold in the present invention;

[0019] Attached Figure 4 Based Figure 2 A partial enlarged view of point A in the middle.

[0020] Among them: 1. bottom mold; 2. side mold; 3. end mold; 4. second punch; 5. first punch; 51. notch; 6. telescopic mold; 7. hinge assembly; 71. support plate; 72. limit plate; 73. limit groove; 74. connecting rod; 8. slide rail assembly; 9. demoulding assembly; 91. slide seat; 92. slide rail unit; 921. slide rod; 922. first bracket; 923. second bracket; 924. lower pulley; 925. upper pulley; 93. connecting plate; 10. second connecting hole; 11. reinforcing rib; 12. first connecting hole. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Attached Figure 1-4The mold for the integral tunnel inverted arch block of the present invention comprises a bottom mold 1, two side molds 2 and two end molds 3; the upper end surface of the bottom mold 1 is in a concave arc shape, and four groups of slide rail assemblies 8 are arranged inside and pass through the two sides of the bottom mold 1 respectively; the bottoms of the two end molds 3 are hinged to the two ends of the bottom mold 1 through hinge assemblies 7 respectively; the two side molds 2 are respectively located on the two sides of the bottom mold 1, and the bottoms are both arranged on the slide rail assemblies 8; a pair of first punches 5 and two pairs of second punches 4 are also arranged between the two side molds 2; the pair of the first punches 5 and the two pairs of the second punches 4 are symmetrically placed along the center plane of the inverted arch block, and are respectively arranged on the two side molds 2; the pair of the first punches 5 are used to form a first cavity on the inverted arch block; the two pairs of the second punches 4 are respectively used to form two second cavities on the inverted arch block; the pair of the first punches 5 are both hollow structures, and are opened at both ends, and notches 51 are respectively arranged on both sides of the joint; each of the first punches 5 is provided with a demoulding assembly 9 and telescopic mold 6; the demoulding assembly 9 is slidably arranged in the first punch 5 along the width direction of the bottom mold 1; a pair of telescopic molds 6 in the first punch 5 are opposite and staggered; the telescopic mold 6 is arranged on the demoulding assembly 9, and can pass through the notch 51 to fit with the surface of the second punch 4, so as to form a water outlet on the inverted arch block; both sides of the bottom mold 1 and both ends of the two end molds 3 are provided with first connecting holes 12; the two side molds 2 are respectively provided with second connecting holes 10 corresponding to the first connecting holes 12 on the bottom mold 1 and the end mold 3; when closing the mold: first rotate the two end molds 3 inward; then move the two side molds 2 closer to the two sides of the bottom mold 1 along the guide rail, and when the two side molds 2 fit with the two sides of the bottom mold 1, a pair of first punches 5 on the two side molds 2 and the two pairs of second punches 4 also fit each other; then, the two demoulding components 9 in the pair of first punches 5 are moved toward the middle at the same time until the two groups of demoulding components 9 are in contact. At this time, the contact surfaces of the two groups of demoulding components 9 and the contact surfaces of the pair of first punches 5 are located in the same plane. Since the telescopic molds 6 on the two groups of demoulding components 9 are opposite and staggered, not only will there be no interference, but they can also be placed coaxially and face the notches 51 on both sides of the docking point respectively; then, the two telescopic molds 6 are driven through the notches 51 on both sides of the docking point by the two groups of demoulding components 9 respectively until they fit with the surfaces of the two pairs of second punches 4, and finally a casting cavity corresponding to the shape of the inverted arch block is formed; finally, the two side molds 2 are connected by the bolt assembly through the first connecting hole 12 and the second connecting hole 10 They are fixedly connected to the bottom mold 1 and the two end molds 3 respectively, and the mold closing action is completed; when opening the mold: first, the two sets of demoulding components 9 are used to drive the two telescopic molds 6 to retract into the pair of first convex molds 5 respectively, so as to realize the demoulding of the telescopic molds 6; then, the two demoulding components 9 in the pair of first convex molds 5 are moved outward at the same time, until the telescopic molds 6 are completely retracted and located in the first convex molds 5; then, all the bolt components connecting the first connecting holes 12 and the second connecting holes 10 are removed; then, the two side molds 2 are separated to the two sides of the bottom mold 1 along the guide rails, so as to realize the demoulding of the first convex mold 5 and the two second convex molds 4;Finally, the two end molds 3 are rotated outward to complete the mold opening action; wherein the slide rail assembly 8 is a prior art, such as the slide rail assembly recorded in a back arch block mold with patent number 201020300036.9, so its structure will not be described in detail. ;

[0023] Furthermore, the demolding assembly 9 includes a slide seat 91 slidably arranged at the bottom of the first punch 5, two groups of slide rail units 92 arranged on the slide seat 91 and placed in parallel along the length direction of the bottom mold 1, and a connecting plate 93 connecting the two groups of slide rail units 92; the inner end of the telescopic mold 6 is arranged on the connecting plate 93, and half of the telescopic mold 6 extends out of the inner side of the slide seat 91; when the mold is closed: since the two groups of demolding assemblies 9 are respectively located on both sides of the joint of a pair of first punches 5, and the notch 51 is arranged at the joint of a pair of first punches 5, half of the telescopic mold 6 extends out of the inner side of the slide seat 91, and this eccentric structure can make the two telescopic molds 6 in a pair of first punches 5 coaxially placed.

[0024] Furthermore, each group of the slide rail units 92 includes a first bracket 922, a second bracket 923 and a slide bar 921; the first bracket 922 and the second bracket 923 are both arranged on the slide seat 91 On the top; the first bracket 922 is provided with an upper pulley 925; the second bracket 923 is provided with a lower pulley 924; the axis of the upper pulley 925 is parallel to the axis of the lower pulley 924, and the upper pulley 925 is higher than the lower pulley 924, and the height difference is the diameter of the slide bar 921; the slide bar 921 is located between the upper pulley 925 and the lower pulley 924, and is placed horizontally along the length direction of the bottom mold 1; the end of the slide bar 921 close to the lower pulley 924 is connected to the connecting plate 93; when working: because the lower pulley 924 is lower than the upper pulley 925, and the end of the slide bar 921 close to the lower pulley 924 is connected to the connecting plate 93, under the gravity of the telescopic mold 6, the other end of the slide bar 921 will tilt upwards, but because the upper pulley 925 is provided, it can play a limiting role, and finally the slide bar 921 is placed horizontally.

[0025] Furthermore, the telescopic mold 6 is of a hollow structure, which is convenient for reducing the weight of the telescopic mold 6, not only facilitating the driving of the demoulding assembly 9, but also reducing the production cost; the inner end of the telescopic mold 6 is opened to facilitate casting.

[0026] Furthermore, the second punch 4 is of a hollow structure, which not only reduces the weight of the second punch 4 but also reduces the production cost; the connection between the second punch 4 and the side mold 2 is open to facilitate casting.

[0027] Furthermore, each of the side molds 2 is integrally injection molded with the first punch 5 and the two second punches 4, which not only makes the overall structure more solid but also facilitates manufacturing.

[0028] Furthermore, the outer side surface of each of the side molds 2 and the end molds 3 is provided with criss-crossed reinforcing ribs 11, which can improve the strength of the side molds 2 and the end molds 3, effectively avoid deformation of the side molds 2 and the end molds 3 after casting, and improve product quality.

[0029] Furthermore, two hinge assemblies 7 are provided at each end of the bottom mold 1; each of the hinge assemblies 7 includes two support plates 71 vertically arranged at the end of the bottom mold 1, and a limit plate 72 arranged at the upper ends of the two support plates 71; a limit groove 73 is provided on the limit plate 72; a connecting rod 74 is provided at the bottom of the end mold 3; the lower end of the connecting rod 74 passes through the limit groove 73 and is rotatably connected with the two support plates 71 through a support shaft; when the mold is opened: under the action of the limit groove 73, the connecting rod 74 can only rotate outward at a fixed angle, which is safer.

[0030] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. An integral tunnel invert block mold, characterized in that: It comprises a bottom mold, two side molds and two end molds; the upper end surface of the bottom mold is in a concave arc shape, and a plurality of groups of slide rail assemblies passing through the two sides of the bottom mold are arranged inside; the bottoms of the two end molds are respectively hinged to the two ends of the bottom mold through hinge assemblies; the two side molds are respectively located on the two sides of the bottom mold, and the bottoms are both arranged on the slide rail assemblies; a pair of first convex molds and two pairs of second convex molds are also respectively arranged between the two side molds; the pair of the first convex molds and the two pairs of the second convex molds are symmetrically placed along the center plane of the inverted arch block, and are respectively arranged on the two side molds; the pair of the first convex molds are used to form a first cavity on the inverted arch block; the two pairs of the second convex molds are respectively used to form two second cavities on the inverted arch block; A pair of the first punches are both hollow structures with openings at both ends, and notches are respectively provided on both sides of the joints; a demoulding assembly and a telescopic mold are provided in each of the first punches; the demoulding assembly is slidably provided in the first punch along the width direction of the bottom mold; the two telescopic molds in a pair of the first punches are opposite and staggered; the telescopic molds are provided on the demoulding assembly and can pass through the notch to fit with the surface of the second punch to form a water outlet on the inverted arch block; first connecting holes are provided on both sides of the bottom mold and at both ends of the two end molds; and second connecting holes corresponding to the first connecting holes on the bottom mold and the end mold are respectively provided on the two side molds.

2. The integral tunnel invert block mold according to claim 1, characterized in that: The demoulding assembly includes a slide seat slidably arranged at the bottom of the first punch, two groups of slide rail units arranged on the slide seat and placed parallel to the length direction of the bottom mold, and a connecting plate connecting the two groups of slide rail units; the inner end of the telescopic mold is arranged on the connecting plate, and at least half of the telescopic mold extends out of the inner side of the slide seat.

3. The integral tunnel invert block mold according to claim 2, characterized in that: Each group of the slide rail units includes a first bracket, a second bracket and a slide bar; the first bracket and the second bracket are both arranged on a slide seat; an upper pulley is arranged on the first bracket; a lower pulley is arranged on the second bracket; the axis of the upper pulley is parallel to the axis of the lower pulley, and the upper pulley is higher than the lower pulley, and the height difference is the diameter of the slide bar; the slide bar is located between the upper pulley and the lower pulley, and is placed horizontally along the length direction of the bottom mold; the end of the slide bar close to the lower pulley is connected to the connecting plate.

4. The integral tunnel invert block mold according to claim 3, characterized in that: The telescopic mold is a hollow structure with an inner end opening.

5. The integral tunnel invert block mold according to any one of claims 1 to 4, characterized in that: The second male mold is a hollow structure, and the connection between the second male mold and the side mold is open.

6. The integral tunnel invert block mold according to claim 5, characterized in that: Each of the side molds is integrally injection molded with the first convex mold and the two second convex molds.

7. The integral tunnel invert block mold according to claim 6, characterized in that: The outer side surface of each of the side molds and the end mold is provided with reinforcing ribs arranged in a crisscross pattern.

8. The integral tunnel invert block mold according to claim 7, characterized in that: At least two hinge assemblies are provided at each end of the bottom mold; each of the hinge assemblies includes two support plates vertically arranged at the end of the bottom mold and a limit plate arranged at the upper ends of the two support plates; a limit slot is arranged on the limit plate; a connecting rod is arranged at the bottom of the end mold; the lower end of the connecting rod passes through the limit slot and is rotatably connected to the two support plates through a support shaft.

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