Middle partition wall lining trolley for multi-arch tunnel

Abstract

A mid-partition lining trolley for a multi-arch tunnel comprises trolley supports which are arranged left and right, and one ends of the trolley supports are connected into a whole through a connecting beam. The lower end of each trolley support is assembled with a walking wheel through a lifting hydraulic cylinder, and the walking wheels are located on a track. Templates are arranged on the left side and the right side of the inner side of the two trolley supports, the left template and the right template are correspondingly matched with the side wall of the mid-partition wall, each of the left template and the right template comprises an upper template, a middle template and a lower template which are sequentially hinged, and demolding hydraulic cylinders are correspondingly installed on the back faces of the upper template, the middle template and the lower template; and template traction mechanisms are mounted on the left trolley bracket and the right trolley bracket and are used for pulling the middle template and the lower template. According to the mid-partition lining trolley for the multi-arch tunnel, obstacles formed by an initial supporting face can be reduced, and normal passing of the lining trolley is guaranteed.

Description

Technical Field

[0001] The utility model relates to a lining trolley, in particular to a lining trolley for a middle partition wall of a multi-arch tunnel. Background Art

[0002] The biggest difference between a multi-arch tunnel and a single-hole tunnel lies in the structure of the middle partition wall. The middle partition wall has two forms: eccentric and non-eccentric. During construction, the middle partition wall serves as the common stress point for the initial support of the first and second tunnels, and is also the common connection point for the secondary lining of the first and second tunnels, bearing part of the surrounding rock load. In recent years, in the process of lining the middle partition wall of a multi-arch tunnel, a tunnel middle partition wall lining trolley has been introduced. The middle partition wall trolley is mainly composed of a template, a trolley bracket and a walking assembly. The trolley bracket is mainly used for load bearing, and the walking assembly is used for walking. The template is designed according to the shape of the middle partition wall to be lined.

[0003] As the cross-section of the pilot tunnel in the multi-arch tunnel is relatively small, in the deformation section of the middle partition wall lining designed in the middle, the trolley template is blocked by the upper curved initial support surface and cannot pass due to the limited working space on the arch top and both sides. It is also impossible to directly make large adjustments through the hydraulic system to meet normal traffic requirements.

[0004] The patented "middle partition wall trolley" with application number "201822096449.9" adopts block-jointed assembly of templates. The working principle part mentions that the upper small template is flipped down first, then the lower side wall template is flipped up, and finally the large template is hoisted in a suspended state. However, since the upper template is basically in contact with the arc-shaped initial support surface, it is not convenient to flip the upper template directly in the actual process. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a middle partition wall lining trolley for a multi-arch tunnel, which avoids the influence of the arc-shaped initial support surface and ensures the normal passage of the lining trolley.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A trolley for lining a middle partition wall for a multi-arch tunnel comprises trolley brackets, which are arranged on the left and right and connected to form a whole at one end by a connecting beam; the lower end of each set of trolley brackets is assembled with a traveling wheel by a lifting hydraulic cylinder, and the traveling wheel is located on a track; templates are arranged on the left and right sides of the inner sides of the two trolley brackets, and the left and right templates correspond to the side walls of the middle partition wall, and the left and right templates each comprise an upper template, a middle template, and a lower template, which are hinged in sequence, and demoulding hydraulic cylinders are correspondingly installed on the backs of the upper template, the middle template, and the lower template; template pulling mechanisms are installed on the left and right trolley brackets, and the template pulling mechanisms pull the middle template and the lower template.

[0008] The upper template, the middle template and the lower template are equipped with connecting components, which are detachably connected to the template pulling mechanism or the demoulding hydraulic cylinder.

[0009] The connecting assembly includes a support block fixed on the inner side of the upper template, the middle template and the lower template, the support block is provided with a first U-shaped groove longitudinally and a second U-shaped groove transversely; a connecting rod is transversely fixedly connected with a latch rod, the output end of the connecting rod is placed in the first U-shaped groove, and the latch rod is placed in the second U-shaped groove; the support block is provided with sockets on the left and right sides above the latch rod, the U-shaped rod is inserted into the sockets, and the connecting rod is limited from moving outward.

[0010] The plug hole comprises a first plug-in portion and a second plug-in portion, and the first plug-in portion and the second plug-in portion are respectively located at two sides of the second U-shaped groove.

[0011] A spring is arranged in the first plug-in part, and limiting rings are fixed on the two vertical parts of the corresponding U-shaped rod. The spring presses the limiting ring, and the end of the U-shaped rod is inserted into the second plug-in part.

[0012] The template pulling mechanism comprises an electric hoist, and the other end of the electric hoist is connected with a suspension rope.

[0013] The utility model provides a partition wall lining trolley for a multi-arch tunnel, which has the following technical effects:

[0014] 1) By adopting a foldable formwork and enabling the demoulding hydraulic cylinder and the formwork pulling mechanism to be quickly disassembled or installed with the formwork through the connecting components, the formwork can be folded and lowered after demoulding to avoid obstacles with the arc-shaped initial support surface at the top, making it convenient to pass through the corresponding construction section and greatly reducing the manual removal of the formwork.

[0015] 2) By adopting the connection components, when it is necessary to replace different templates or replace the worn template, you only need to pull the U-shaped rod outward to separate the demoulding hydraulic cylinder from the template, and then quickly replace the template that meets the tunnel size to ensure the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is the front view of the utility model.

[0018] Figure 2 It is a left view of the utility model (removing part of the screw rod supported on the arc-shaped primary support surface).

[0019] Figure 3 It is a right view of the utility model (removing part of the screw rod supported on the arc-shaped primary support surface).

[0020] Figure 4This is a schematic diagram of the structure of the connecting component in the utility model (first perspective).

[0021] Figure 5 This is a schematic diagram of the structure of the connecting component in the present utility model (second viewing angle).

[0022] Figure 6 It is a cross-sectional view of the connecting component in the utility model.

[0023] Figure 7 It is a schematic diagram of the initial state of the template in the utility model.

[0024] Figure 8 It is a schematic diagram of the demoulding state of the template in the utility model.

[0025] Fig. 9 It is a schematic diagram of the folded state of the template in the present invention (in the figure, L represents the maximum distance the template moves downward).

[0026] Fig.10 It is a schematic diagram of the template descending state in the utility model.

[0027] In the figure: trolley bracket 1, connecting beam 2, lifting hydraulic cylinder 3, walking wheel 4, track 5, template 6, upper template 7, middle template 8, lower template 9, demoulding hydraulic cylinder 10, template pulling mechanism 11, connecting assembly 12, spiral support leg 13, support block 51, first U-shaped groove 52, second U-shaped groove 53, connecting rod 54, socket 55, U-shaped rod 56, spring 57, limiting ring 58, fixing rod 59, first plug-in part 55.1, second plug-in part 55.2. DETAILED DESCRIPTION

[0028] like Figure 1-2 As shown, a partition wall lining trolley for a multi-arch tunnel includes a trolley bracket 1, which is arranged on the left and right, and the end of the trolley bracket 1 close to the front is connected to form a whole through a connecting beam 2; the lower end of each set of trolley brackets 1 is assembled with the running wheel 4 through a lifting hydraulic cylinder 3, and the running wheel 4 is located on a track 5. In addition, each set of trolley brackets 1 is also configured with multiple sets of spiral legs 13 along the length direction, which can be supported on the ground or rotated and retracted. This part can be consistent with the configuration of the existing lining trolley. In addition, multiple sets of rotatable telescopic screw rods are arranged on the trolley bracket 1, and the other end of the telescopic screw rod is pressed tightly against the arc-shaped initial support surface during pouring. This part is also consistent with the prior art. In order to facilitate a clearer view of the figure, this part is not shown in the figure of this application.

[0029] Templates 6 are arranged on the left and right sides of the two vehicle brackets 1, and the left and right templates 6 correspond to the side walls of the middle partition wall. In this embodiment, the template 6 is arc-shaped, with both ends bent outward and the middle bent inward. Grouting holes / grouting holes, vibrating seats, etc. are opened on the template 6, and the configuration is inconsistent with the existing structure.

[0030] The difference is that the left and right templates 6 both include an upper template 7, a middle template 8, and a lower template 9, and the hinge point or segment between the upper template 7 and the middle template 8 is located at the edge of the inner bend or a little above it. This makes it easy to move vertically downward without obstacles after folding. The hinge point or segment between the middle template 8 and the lower template 9 is located at the bottom, making the lower template 9 smaller, so that the lower template 9 can be completely turned over and folded to a vertically upward state in a limited space.

[0031] The hinge points between the upper template 7, the middle template 8, and the lower template 9 are also arranged on the side close to the corresponding trolley bracket 1, and the three are hinged to each other in sequence. Multiple groups of demoulding hydraulic cylinders 10 are hinged on the left and right trolley brackets 1, and the multiple groups of demoulding hydraulic cylinders 10 are assembled and connected with the upper template 7, the middle template 8, and the lower template 9 correspondingly, so as to support the upper template 7, the middle template 8, and the lower template 9 to achieve mold closing and demoulding. In addition, the left and right trolley brackets 1 are equipped with a template pulling mechanism 11, which pulls the middle template 8 and the lower template 9.

[0032] In order to realize the rapid disassembly between the demoulding hydraulic cylinder 10, the template pulling mechanism 11 and the template 6, a connecting assembly 12 is installed on the upper template 7, the middle template 8 and the lower template 9, and the connecting assembly 12 is detachably connected to the template pulling mechanism 11 or the demoulding hydraulic cylinder 10. This facilitates the rapid replacement of the template or the folding operation of the template after demoulding.

[0033] like Figure 4-6 As shown, the connecting assembly 12 includes a support block 51 fixed to the inner side of the upper template 7, the middle template 8, and the lower template 9, and a first U-shaped groove 52 is longitudinally provided on the support block 51, and a second U-shaped groove 53 is transversely provided on the support block 51. A fixing rod 59 is fixed at the output end of the demoulding hydraulic cylinder 10 and the end of the template pulling mechanism 11, and a latch rod 54 is transversely fixedly connected to the fixing rod 59. The fixing rod 59 is placed in the first U-shaped groove 52 of the support block 51, and the latch rod 54 is placed in the second U-shaped groove 53 of the support block 51. There are jacks 55 on the left and right sides above the connecting rod 54 in the support block 51, and the U-shaped rod 56 is inserted into the jack 55, and the outward movement of the connecting rod 54 is limited, and the connecting rod 54 remains in a rotatable state.

[0034] like Figure 6 As shown, the plug hole 55 includes a first plug-in portion 55.1 and a second plug-in portion 55.2, which are respectively located on both sides of the second U-shaped groove 53. A spring 57 is provided in the first plug-in portion 55.1, and a limit ring 58 is fixed on the two vertical parts of the corresponding U-shaped rod 56. The spring 57 squeezes the limit ring 58 so that the end of the U-shaped rod 56 is inserted into the second plug-in portion 55.2.

[0035] like Figure 6As shown, when the U-shaped rod 56 is inserted into the second plug-in portion 55.2, the U-shaped rod 56 restricts the connecting rod 54 from moving outward, so that the output end of the demoulding hydraulic cylinder 10 or one end of the template pulling mechanism 11 remains connected to the template 6 and can rotate.

[0036] When the U-shaped rod 56 is pulled outward, the end of the U-shaped rod 56 is disengaged from the second plug-in portion 55.2 and retracted into the first plug-in portion 55.1. The fixing rod 59 can be taken out like this, so that the demoulding hydraulic cylinder 10 or the template pulling mechanism 11 is quickly disengaged from the template 6.

[0037] The template pulling mechanism 11 here includes an electric hoist, and the other end of the electric hoist is connected to a lifting rope, and the end of the lifting rope is fixedly connected to the fixing rod 59 in the connecting component 12.

[0038] Working principle and process:

[0039] 1) When a certain section of the middle partition wall is poured and needs to be demoulded, the demoulding hydraulic cylinder 10 is controlled to shrink a small amount so that the left and right templates 6 are retracted and separated from the molding surface. Figure 7-8 described.

[0040] 2) After the template 6 is demoulded, one end of the demoulding hydraulic cylinder 10 connected with the middle template 8 and the lower template 9 is disassembled, and the fixing rod 59 of the template pulling mechanism 11 is assembled with the supporting block 51 on the middle template 8 and the lower template 9. Figure 8 shown.

[0041] 3) The electric hoist in one set of template pulling mechanism 11 first lifts and turns the lower template 9, and then the electric hoist in another set of template pulling mechanism 11 pulls the middle template 8 upward and turns it to a certain angle. Fig. 9 shown.

[0042] 4) After the lifting hydraulic cylinder 3 on the trolley support 1 is slightly raised, loosen the locking nut at the corresponding position and the spiral support leg 13 under the platform beam, and then control the lifting hydraulic cylinder 3 to shrink and descend, so that the top of the upper template 7 is separated from the upper arc-shaped initial support surface by a certain distance. In this way, the lining trolley can move forward smoothly after demoulding without any obstacles.

[0043] 5) Remove the wooden wedges or car stoppers at the running wheels of the lining trolley, and operate the lining trolley forward to move to the next parking strip lining position, and start the lining trolley operation according to the reverse procedure.

Claims

1. A lining trolley for a middle partition wall of a multi-arch tunnel, characterized in that: The invention comprises a trolley support (1), which is arranged on the left and right and connected to form a whole at one end by a connecting beam (2); the lower end of each set of trolley supports (1) is assembled with a travel wheel (4) by a lifting hydraulic cylinder (3), and the travel wheel (4) is located on a track (5); templates (6) are arranged on the left and right sides of the inner sides of the two trolley supports (1), and the left and right templates (6) are matched with the side walls of the middle partition wall, and the left and right templates (6) each comprise an upper template (7), a middle template (8), and a lower template (9), and the upper template (7), the middle template (8), and the lower template (9) are hinged in sequence, and demoulding hydraulic cylinders (10) are installed on the back sides of the upper template (7), the middle template (8), and the lower template (9); and template pulling mechanisms (11) are installed on the left and right trolley supports (1), and the template pulling mechanisms (11) pull the middle template (8) and the lower template (9).

2. The intermediate partition wall lining trolley for a multi-arch tunnel according to claim 1, characterized in that: The upper template (7), the middle template (8) and the lower template (9) are equipped with a connecting assembly (12), and the connecting assembly (12) is detachably connected to the template pulling mechanism (11) or the demoulding hydraulic cylinder (10).

3. The intermediate partition wall lining trolley for a multi-arch tunnel according to claim 2, characterized in that: The connecting assembly (12) comprises a support block (51) fixed to the inner sides of the upper template (7), the middle template (8) and the lower template (9); the support block (51) is provided with a first U-shaped groove (52) in the longitudinal direction and a second U-shaped groove (53) in the transverse direction; a fixing rod (59) is transversely fixedly connected to a latch rod (54); the output end of the fixing rod (59) is placed in the first U-shaped groove (52), and the latch rod (54) is placed in the second U-shaped groove (53); and insertion holes (55) are provided on the left and right sides above the latch rod (54) in the support block (51); the U-shaped rod (56) is inserted into the insertion hole (55), and the outward movement of the latch rod (54) is limited.

4. The intermediate partition wall lining trolley for a multi-arch tunnel according to claim 3, characterized in that: The plug hole (55) comprises a first plug-in portion (55.1) and a second plug-in portion (55.2), and the first plug-in portion (55.1) and the second plug-in portion (55.2) are respectively located on two sides of the second U-shaped groove (53).

5. The intermediate partition wall lining trolley for a multi-arch tunnel according to claim 4, characterized in that: A spring (57) is provided in the first plug-in portion (55.1), and limiting rings (58) are fixed on the two vertical portions of the corresponding U-shaped rod (56). The spring (57) presses the limiting ring (58), and the end of the U-shaped rod (56) is inserted into the second plug-in portion (55.2).

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