Adjustable composite lower die supporting device

Abstract

The utility model discloses an adjustable composite lower die supporting device which comprises a trolley, a lower die supporting plate and a supporting assembly, the lower die supporting plate is provided with a supporting frame, the trolley is provided with a pin hole base corresponding to the supporting frame, the pin hole base is provided with a plurality of first pin holes, and the supporting frame can be selectively connected with one of the first pin holes. The height of the lower die supporting plate is adjusted; the side face of the lower die supporting plate is further connected with a supporting assembly, the trolley is provided with a supporting base corresponding to the supporting assembly, and the supporting assembly obliquely supports the lower die supporting plate through the supporting base. One end of the supporting assembly is hinged to the lower die supporting plate, and the other end of the supporting assembly is hinged to the supporting base. Through the staggered design of the corresponding composite lower die and the design of the supporting assembly, the top cement pouring plugging device can efficiently adapt to top cement pouring plugging of various complex tunnels.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to an adjustable composite lower formwork support device. Background Technology

[0002] In the construction of tunnel lining trolleys, both ends require formwork closure (by sealing the grout poured on top using end-cap templates). End-cap templates typically consist of a fixed lower formwork support device and a telescopic upper formwork support device. While this design is stable, it also presents some problems. For example, a waterstop is embedded between the lower and upper formwork support devices. The thickness of this waterstop may vary. The solution is to use the telescopic upper formwork to coordinate with the lower formwork support device to press the waterstop. However, the telescopic stroke of the upper formwork support device is limited, and the fixed lower formwork cannot adjust its height (gap) in conjunction with the telescopic upper formwork. When the waterstop is thick, its installation becomes difficult. This problem makes existing lower formwork support devices unsuitable for different tunnel pouring and sealing conditions. Furthermore, the support system corresponding to the lower formwork support device in existing end-cap templates is usually a single inclined support, which cannot be flexibly adjusted according to the specific height of the lower formwork support device. Therefore, existing support components may become unsuitable after the height of the lower formwork support device changes.

[0003] Therefore, based on the aforementioned problems, it is necessary to improve the existing lower mold support device. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable composite lower mold support device to solve the various limitations mentioned above.

[0005] This utility model is achieved through the following technical solution:

[0006] An adjustable composite lower mold support device includes a trolley, a lower mold support plate, and a support assembly. The lower mold support plate is provided with a support frame, and the trolley is provided with a pin hole base corresponding to the support frame. The pin hole base is provided with a plurality of first pin holes, and the support frame can selectively connect to one of the multiple first pin holes. The support assembly is also connected to the side of the lower mold support plate, and the trolley is provided with a support base corresponding to the support assembly. The support assembly tilts to support the lower mold support plate through the support base. One end of the support assembly is hinged to the lower mold support plate, and the other end is hinged to the support base.

[0007] In general, the lower formwork support plate is used in conjunction with the upper formwork support plate (polymer plug plate) to seal the grouting annular surface of the tunnel top. The bottom of the lower formwork support plate is hinged to the trolley via a first support pin. The side of the lower formwork support plate is also inclined with a support component for pressing against the lower formwork support plate. In addition, multiple first pin holes are provided on the pin hole base. The lower formwork support plate can control the height difference between its top surface and the top surface of the adjacent lower formwork support plate according to the corresponding first pin holes to complete the sealing of the irregular top of the tunnel.

[0008] Preferably, the support assembly includes a support rod and a support hinge. The support rod is disposed at the bottom of the support hinge, which is hinged to a support base. A first lead screw is also disposed on the support base corresponding to the support hinge, and a threaded hole is provided on the support base corresponding to the first lead screw. The first lead screw is coupled to the support base through the threaded hole, and its end abuts against the support hinge. The first lead screw supports and pushes the support hinge, thereby supporting and pushing the support rod, thus controlling the posture of the corresponding lower mold support plate. The support hinge includes a first limiting member and a second limiting member. The first limiting member is disposed on top of the second limiting member, and the second limiting member has a second limiting portion inclinedly disposed thereon, selectively used to lift the first limiting member. The first limiting member has a first limiting portion inclinedly disposed thereon. By setting the first and second limiting members, the support rod can cooperate with either the first or second limiting member to support the lower mold support plates of different heights.

[0009] Preferably, the support assembly includes a lead screw assembly. The lead screw assembly includes a second lead screw and a third lead screw, which are coaxially connected by a nut connector. The nut connector has threaded holes at both ends for coupling the second and third lead screws. The coaxial connection of the second and third lead screws via the nut connector allows the second or third lead screw to move closer or further apart when the nut connector rotates, enabling the lead screw assembly to extend or retract, thus facilitating adjustment of the lower mold support plate's posture.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0011] 1. The composite lower mold support device involved in this utility model has a corresponding upper mold support device (polymer plug plate). A waterstop is set between the composite lower mold support device and the corresponding upper mold support device. The thickness of the waterstop will be different according to different tunnel pouring requirements. When the thickness of the waterstop is thicker, the support frame of the lower mold support plate of this utility model is connected to the first pin hole below the pin hole base. The bottom of the corresponding support rod is set into the limiting part of the second limiting part of the support hinge seat (after the lower mold support plate is set below, the support rod is too long. Flipping open the first limiting part and setting the support rod into the second limiting part can make the support hinge seat and the support rod adapt to the height difference of the lower mold support plate). This makes the lower mold support device of this utility model more adaptable to different construction tunnel pouring (adapting to different thicknesses of waterstop) and different tunnel grouting scenarios.

[0012] 2. In this utility model, the support hinge seat is provided with an inclined first limiting member and a second limiting member. The first limiting member and the second limiting member are respectively provided with a first limiting part and a second limiting part. The support rod can be matched with the height of the lower mold support plate to set its bottom in the first limiting part or the second limiting part. In addition, an inclined support first lead screw is provided below the second limiting member. The thrust of the first lead screw can be better transmitted to the support rod, indirectly extending the service life of the lead screw. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a front view structural diagram of an embodiment;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the first posture in the embodiment;

[0016] Figure 3 for Figure 2 Detailed diagram of point A in the middle;

[0017] Figure 4 for Figure 2 Detailed diagram of point B in the middle;

[0018] Figure 5 for Figure 2 Detailed diagram of point C in the middle;

[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the second posture in the embodiment;

[0020] Figure 7 for Figure 6 Detailed diagram of point D in the middle;

[0021] Figure 8 for Figure 6 Detailed diagram of point E in the middle;

[0022] Figure 9 A schematic diagram of the supporting hinge structure;

[0023] Figure 10 A schematic diagram of the supporting hinge structure;

[0024] Figure 11 This is a schematic diagram of the lead screw assembly structure;

[0025] The reference numerals in the attached drawings represent: 1-Trolley, 2-Lower mold support plate, 3-Support assembly, 4-First support pin, 5-Support rod, 6-Pin hole base, 7-Support frame, 8-First pin hole, 9-Second support pin, 10-Support base, 11-Third support pin, 12-First lead screw, 13-Support hinge, 14-Snap-fit ​​part, 15-Extension part, 16-First limiting part, 17-Second pin hole, 18-First limiting component, 19-Second limiting component, 20-Second lead screw, 21-Third lead screw, 22-Nut connector, 23-Second limiting part. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] Example 1

[0028] like Figures 1 to 10 As shown, Embodiment 1 relates to an adjustable composite lower mold support device, including a lower mold support plate 2 and a support assembly 3. Multiple lower mold support plates 2 are arranged sequentially around the annular surface of the end of a trolley 1 for grouting and sealing the gap between the trolley 1 and the upper rock strata. Each lower mold support plate 2 has a support frame 7, and the trolley 1 has a corresponding pin hole base 6. The support frame 7 is connected to the pin hole base 6 via a second support pin 9. A support rod 5 is also connected to the side of the lower mold support plate 2. The top of the support rod 5 is connected to a corresponding pin hole on the side of the lower mold support plate 2 via a first support pin 4. The support rod 5 supports the lower mold support plate 2 for sealing and grouting (cement grout). The support rod 5 is inclined, and its bottom is connected to a support hinge seat 13.

[0029] The support hinge 13 includes a first limiting member 18 and a second limiting member 19. The first limiting member 18 is disposed above the second limiting member 19. The second limiting member 19 has a second limiting portion 23 inclinedly disposed and selectively used to lift the first limiting member 18. A first limiting portion 16 is inclinedly disposed above the first limiting member 18. The first limiting portion 16 is a recessed portion and is inclinedly disposed. The bottom of the support rod 5 is connected to the first limiting portion 16. The first limiting member 18 and the bottom-disposed second limiting member 19 are connected through the same second pin hole 17. The second limiting member 19 is hinged to the corresponding support base 10 of the trolley 1 via the second pin hole 17 and the third support pin 11. The support base 10 is also coupled to the bottom of the second limiting member 19 with a first lead screw 12. The first lead screw 12 is coupled to the threaded hole corresponding to the support base 10. The upper end of the first lead screw 12 abuts against the second limiting member 19. The first lead screw 12 tilts to support the second limiting member 19. Rotation of the first lead screw 12 can drive the second limiting member 19 to move, thereby controlling the position change of the first limiting member 18 on it and further adjusting the posture of the support rod 5. In a preferred embodiment, the support rod 5, the first limiting part 16, and the first lead screw 12 tilt to the same side, so that the thrust of the first lead screw 12 can be better transmitted to the support rod 5.

[0030] To facilitate the sealing of the gap between the tunnel rock strata and the trolley 1, Embodiment 1 can be configured in two postures. The first posture (e.g.) Figure 2 When the embedded waterstop is relatively thin, it is sealed by using the corresponding upper mold support plate. The second approach (e.g.) Figure 6 When the corresponding embedded waterstop is relatively thin, it is used in conjunction with the corresponding upper formwork support plate to complete the sealing and sealing of the grouting on the top of the tunnel.

[0031] It is worth mentioning that when the support frame 7 of the lower mold support plate 2 is hinged to the first pin hole 8 near the upper part of the pin hole base 6 (i.e., each lower mold support plate 2 is set according to the first posture), the bottom of the support rod 5 is set in the limiting part of the first limiting member 18 of the support hinge seat 13. The first lead screw 12 supports the second limiting member 19, and the second limiting member 19 supports the first limiting member 18, thereby supporting the support rod 5. When the support frame 7 of the lower mold support plate 2 is hinged to the first pin hole 8 near the lower part of the pin hole base 6 (i.e., each lower mold support plate 2 is set according to the second posture), the distance between the support rod 5 and the hinge seat 13 is shortened, and the support rod 5 cannot be set on the first limiting member 18 (the distance is too short). The support hinge seat 13 flips forward the first limiting member 18, and sets the support rod 5 in the second limiting part 23 of the second limiting member 19 (e.g., ...). Figure 7 The first lead screw 12 supports the second limiting member 19, which in turn supports the support rod 5. Through the setting of the support hinge seat 13 and the pin hole base 6, the lower mold support plate 2 can flexibly raise and lower its height and maintain the stability of the support.

[0032] Example 2

[0033] To further enable the lower mold support plate 2 to be raised and lowered and to adapt to different sealing surfaces (embedded waterstops of different thicknesses), Embodiment 2, based on Embodiment 1, further improves the pin hole base 6. The pin hole base 6 is provided with multiple first pin holes 8 corresponding to the lower mold support plate 2. The distance from the multiple first pin holes 8 to the end face of the trolley 1 is the same. The support frame 7 of the lower mold support plate 2 can be hinged to any one of the multiple first pin holes 8. Hinging the support frame 7 to different first pin holes 8 on the corresponding pin hole base 6 will change the relative position of the lower mold support plate 2 and the trolley 1 (see...). Figure 4 and Figure 8 This allows each lower formwork support plate 2 to be spliced ​​together as it is being constructed (for embedded waterstops of different thicknesses), improving the construction tolerance for different tunnel pouring and sealing, and enabling timely manual disassembly and assembly, thus improving work efficiency.

[0034] Example 3

[0035] To further enhance the waterproofing effect of the lower formwork support plate 2, adjacent lower formwork support plates 2 are interlocked at their adjacent edges. The lower formwork support plate 2 extends to form extensions 15 at both ends near the sealing surface (the contact ends with the adjacent lower formwork support plate 2 on both sides). The two ends (the contact ends) of adjacent lower formwork support plates 2 correspond to the extensions 15 of the adjacent lower formwork support plate 2, forming tightly fitting interlocking parts 14. The interlocking parts 14 are L-shaped, and the surface of the extensions 15 is engaged at the bend of the L-shaped interlocking parts 14, allowing the interlocking parts 14 to compress and lock the extensions 15 of the adjacent lower formwork support plates 2, completing the staggered overlap. This method effectively increases the sealing contact surface of the overlap joint, further enhancing the waterproofing effect. Furthermore, the staggered overlap of the lower formwork support plates 2 is sequentially installed along the circumference of the tunnel top. When the concrete pouring requires flipping the lower formwork support plate 2, the lower formwork support plate 2 with the fastening part 14 can be flipped first, so that there will be no negative interference between the multiple lower formwork support plates 2 installed along the tunnel dome, which will affect the construction efficiency.

[0036] Example 4

[0037] The difference from Embodiment 1 is that the support component 3 in Embodiment 4 uses a lead screw assembly (see...). Figure 11The lead screw assembly includes a second lead screw 20 and a third lead screw 21, which are coaxially connected by a nut connector 22. The nut connector 22 has threaded holes at both ends for coupling the second lead screw 20 and the third lead screw 21. Rotating the nut connector 22 allows the second lead screw 20 and the third lead screw 21 to move away from or closer to each other (i.e., rotating the nut connector 22 allows the lead screw assembly to extend or shorten). The upper end of the lead screw assembly is hinged to the side of the lower mold support plate 2, and its lower end abuts or is hinged to the support base 10. When the lower mold support plate 2 needs to be adjusted, the operator adjusts the length of the lead screw assembly by rotating the nut connector 22 to tighten or disassemble the lower mold support plate 2. This simplifies the structure of the lower mold support device, facilitating transportation and installation.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjustable compound mold support device comprising a trolley (1), a mold support plate (2) and a support assembly (3), characterized in that, The lower mold support plate (2) is provided with a support frame (7), the trolley (1) is provided with a pin hole base (6) corresponding to the support frame (7), the pin hole base (6) is provided with a plurality of first pin holes (8), the support frame (7) can be selectively connected with one of the plurality of first pin holes (8) to adjust the height of the lower mold support plate (2); the lower mold support plate (2) is also connected with a support assembly (3), the trolley (1) is provided with a support base (10) corresponding to the support assembly (3), the support assembly (3) supports the lower mold support plate (2) by the support base (10); one end of the support assembly (3) is hinged to the lower mold support plate (2), and the other end thereof is hinged to the support base (10).

2. An adjustable compound under mold support apparatus as described in claim 1, wherein, The support assembly (3) comprises a support rod (5) and a support hinge base (13).

3. An adjustable compound under mold support apparatus as described in claim 2 wherein, The support rod (5) is arranged above the support hinge base (13), the support hinge base (13) is hinged to the support base (10), the support base (10) is further provided with a first lead screw (12) corresponding to the support hinge base (13), the support base (10) is provided with a threaded hole corresponding to the first lead screw (12), the first lead screw (12) is coupled to the support base (10) through the threaded hole, and the end of the first lead screw (12) abuts against the bottom of the support hinge base (13).

4. An adjustable compound under mold support apparatus as described in claim 3 wherein, The support hinge base (13) comprises a first limiting piece (18) and a second limiting piece (19), the first limiting piece (18) is arranged above the second limiting piece (19), the second limiting piece (19) is obliquely provided with a second limiting portion (23) and is selectively used for jacking up the first limiting piece (18), and the first limiting piece (18) is obliquely provided with a first limiting portion (16).

5. An adjustable compound under mold support apparatus as described in claim 1 wherein, The support assembly (3) comprises a lead screw assembly.

6. An adjustable compound under mold support apparatus as described in claim 5 wherein, The lead screw assembly comprises a second lead screw (20) and a third lead screw (21), the second lead screw (20) and the third lead screw (21) are coaxially connected through a nut connecting piece (22), and the nut connecting piece (22) is provided with threaded holes at both ends, which can be coupled to the second lead screw (20) and the third lead screw (21).

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