Flexible array type trestle landing leg suitable for tunnel arc inverted arch face

Abstract

The utility model discloses a flexible array type trestle support leg adapted to an arc-shaped inverted arch surface of a tunnel, which is supported on two sides of the inverted arch surface of the tunnel and consists of a lifting driving part and a flexible array support boot mounted at the bottom of the lifting driving part, a plurality of hydraulic rods arranged in a honeycomb shape are installed in hydraulic cabin shells of the flexible array supporting shoes, the flexible supporting shoes are hinged to the bottoms of the hydraulic rods, and the hydraulic rods drive the flexible supporting shoes to be tightly attached to the tunnel inverted arch face so that the trestle supporting legs can be supported on the tunnel inverted arch face. The flexible array supporting shoe has the advantages that the distance measuring sensor carried by the flexible array supporting shoe can accurately measure an inverted arch arc-shaped surface at a landing point of an inverted arch trestle leg, and can be used for accurately controlling the expansion and contraction amount of a hydraulic rod of the flexible array supporting shoe; the flexible array supporting boot is in a separated honeycomb shape and can be changed according to the shape of the arc-shaped face of the inverted arch, so that the flexible array supporting boot is completely attached to the arc-shaped face of the inverted arch, stress is uniform, and the hidden danger of side turning of the trestle is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a flexible array type trestle supporting leg adapted to a tunnel arc-shaped inverted arch surface. Background Art

[0002] In tunnel excavation, in order to ensure that the lane line in and out of the face is not interrupted during the invert concrete construction, a hydraulic self-propelled invert trestle is used. The hydraulic self-propelled invert trestle has adjustable hydraulic legs, which often sink under vehicle load, which not only affects the invert construction, but also may cause accidents.

[0003] Patents CN202753915U, CN202703549U and CN215104589U all have flat support boots, while the inverted arch in the tunnel is an arc-shaped surface. The support boots of the inverted arch trestle legs cannot fit completely, and the force is uneven, which poses a safety hazard of the trestle overturning. Usually, multiple square timbers or wedge-shaped steel pads are used for support, which have poor integration with the trestle support boots and the inverted arch surface, and easily cause the square timber or wedge-shaped steel pad to shift. At the same time, the use of multiple square timbers or wedge-shaped steel pads requires manpower support, which is time-consuming and labor-intensive and cannot be precisely controlled. Summary of the invention

[0004] The purpose of the utility model is to provide a flexible array type trestle leg that adapts to the curved inverted arch surface of the tunnel based on the above-mentioned deficiencies of the prior art. The utility model is composed of a lifting drive part and a flexible array support shoe. The flexible array support shoe can completely fit the curved inverted arch surface of the tunnel, thereby eliminating the hidden danger of the trestle tipping over.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A flexible array type trestle leg adapted to the curved inverted arch surface of a tunnel, the trestle leg being installed on both sides of the tunnel inverted arch surface, the trestle leg being composed of a lifting drive part and a flexible array support boot installed at the bottom of the lifting drive part, a plurality of hydraulic rods arranged in a honeycomb shape being installed in the hydraulic compartment shell of the flexible array support boot, a flexible support boot being hinged at the bottom of the hydraulic rod, and the hydraulic rod driving the flexible support boot to be tightly attached to the tunnel inverted arch surface so that the trestle leg is supported on the tunnel inverted arch surface.

[0007] The hydraulic compartment shell is divided into a hydraulic pipe cluster chamber and a hydraulic distribution chamber by a partition plate. The top of the hydraulic rod is installed on the partition plate. Hydraulic pipes are arranged in the hydraulic pipe cluster chamber. One end of the hydraulic pipe passes through the hydraulic pipe hole on the partition plate to be connected with the hydraulic rod in the hydraulic distribution chamber, and the other end extends to the outside of the hydraulic compartment shell through the cluster pipe hole on the hydraulic compartment shell.

[0008] A plurality of distance measuring sensors are arranged on both sides of the bottom of the partition plate.

[0009] The lifting drive unit comprises a hydraulic cylinder and a leg cover, the base of the hydraulic cylinder is fixed on the hydraulic cabin shell, and the telescopic rod is connected to the leg cover.

[0010] The hydraulic rods are connected via hydraulic thin-wall plates.

[0011] A conical ball joint seat is installed at the bottom of the hydraulic rod, and a conical ball joint matched with the conical ball joint seat is installed at the top of the flexible support shoe.

[0012] The advantages of the utility model are:

[0013] (1) The distance measuring sensor carried by the flexible array support shoe can accurately measure the arc surface of the inverted arch at the landing point of the inverted arch trestle leg, which can be used to accurately control the extension and retraction of the hydraulic rod of the flexible array support shoe;

[0014] (2) The flexible array support shoe is a separated honeycomb shape, which can be changed according to the shape of the arc surface of the inverted arch, so that the flexible array support shoe can completely fit the arc surface of the inverted arch, and the force is evenly distributed, eliminating the risk of the trestle rolling over;

[0015] (3) Intelligent ranging and hydraulically driven flexible array support boots eliminate the cost of manual support, which is safe and efficient;

[0016] (4) The flexible array support boots are used to accurately adjust and control the horizontality of the trestle and the verticality of the trestle legs in real time, ensuring the stability of the trestle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the trestle legs of the utility model;

[0018] Figure 2 for Figure 1 Cross-section of the middle AA;

[0019] Figure 3 for Figure 1 Cross-section of the middle BB;

[0020] Figure 4 for Figure 1 Cross-section of the middle CC;

[0021] Figure 5 It is a distance measurement schematic diagram of the trestle legs of the utility model;

[0022] Figure 6 It is a schematic diagram of the utility model of the trestle legs adapting to the curved invert surface of the tunnel;

[0023] like Figures 1 to 6 As shown, the marks in the figure represent respectively:

[0024] 1. Trestle legs, 2. Tunnel invert surface;

[0025] 11. Lifting drive unit, 12. Flexible array support shoe;

[0026] 111. Outrigger jacket, 112. Hydraulic cylinder;

[0027] 121. Hydraulic compartment shell, 122. Partition plate, 123. Hydraulic pipe cluster chamber, 124. Hydraulic distribution chamber, 125. Hydraulic pipe hole, 126. Hydraulic pipe, 127. Cluster pipe hole, 128. Hydraulic thin-walled plate, 129. Hydraulic rod, 1210. Conical ball joint seat, 1211. Conical ball joint, 1212. Flexible support boot, 1213. Distance measuring sensor. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0029] Example: Figures 1 to 6 As shown, this embodiment relates to a flexible array type trestle leg that adapts to the curved arch surface of the tunnel. The trestle leg 1 is supported on both sides of the tunnel arch surface 2. The trestle leg 1 consists of a lifting drive part 11 and a flexible array support boot 12 installed at the bottom of the lifting drive part 11. The flexible array support boot 12 can completely fit the tunnel arch surface 2, thereby eliminating the hidden danger of the trestle tipping over.

[0030] like Figures 1 to 6 As shown, the lifting drive unit 11 includes a hydraulic cylinder 112 and a leg cover 111. The base of the hydraulic cylinder 112 is fixed on the flexible array support boot 12 (hydraulic cabin shell 121), and the telescopic rod is connected to the leg cover 111. The hydraulic cylinder 112 drives the leg cover 111 to perform lifting and lowering movements through the telescopic rod thereon, thereby adjusting the height of the pier leg 1.

[0031] like Figures 1 to 6As shown, the flexible array support boot 12 includes a hydraulic cabin shell 121, a partition plate 122, a hydraulic pipe 126, a hydraulic rod 129, a flexible support boot 1212 and a ranging sensor 1213. The lower end of the hydraulic cabin shell 121 is open, and the hydraulic cabin shell 121 is divided into a hydraulic pipe cluster chamber 123 and a hydraulic distribution chamber 124 by the partition plate 122. A plurality of hydraulic rods 129 arranged in a honeycomb shape are installed in the hydraulic distribution chamber 124. The hydraulic rods 129 are connected to each other by hydraulic thin-walled plates 128, and the tops of the hydraulic rods 129 are installed on the partition plate 122. A hydraulic pipe 126 is arranged in the hydraulic pipe cluster chamber 123. One end of the hydraulic pipe 126 passes through the hydraulic pipe hole 125 on the partition plate 122 and is connected to the hydraulic rod 129 in the hydraulic distribution chamber 124. The other end of the hydraulic pipe 126 extends to the outside of the hydraulic compartment shell 121 through the cluster pipe hole 127 on the hydraulic compartment shell 121 and is connected to the hydraulic system. The hydraulic rod 129 is controlled by the hydraulic system (the hydraulic system controls the flow direction of the hydraulic oil), thereby realizing the extension and retraction of the hydraulic rod 129. A conical ball hinge seat 1210 is installed at the bottom of the hydraulic rod 129, and a conical ball hinge 1211 matched with the conical ball hinge seat 1210 is installed at the top of the flexible support shoe 1212, thereby realizing the hinge connection between the hydraulic rod 129 and the flexible support shoe 1212. The hydraulic rod 129 can drive the flexible support shoe 1212 to be close to the tunnel inverted arch surface 2, so that the trestle leg 1 is supported on the tunnel inverted arch surface 2. In this embodiment, a plurality of distance measuring sensors 1213 are provided on both sides of the bottom of the partition plate 122. The distance measuring sensors 1213 are arranged toward the tunnel arch surface 2. The distance measuring sensors 1213 can accurately measure the distance between the landing point of the trestle leg and the bottom of the flexible array support boot 12 (i.e., the distance between the tunnel arch surface 2 and the bottom of the flexible support boot 1212), and can be used to accurately control the extension and retraction amount of the hydraulic rod 129 of the flexible array support boot 12, thereby ensuring that the flexible support boot 1212 is tightly attached to the tunnel arch surface 2.

[0032] The beneficial technical effects of this embodiment are:

[0033] (1) The distance measuring sensor carried by the flexible array support shoe can accurately measure the arc surface of the inverted arch at the landing point of the inverted arch trestle leg, which can be used to accurately control the extension and retraction of the hydraulic rod of the flexible array support shoe;

[0034] (2) The flexible array support shoe is a separated honeycomb shape, which can be changed according to the shape of the arc surface of the inverted arch, so that the flexible array support shoe can completely fit the arc surface of the inverted arch, and the force is evenly distributed, eliminating the risk of the trestle rolling over;

[0035] (3) Intelligent ranging and hydraulically driven flexible array support boots eliminate the cost of manual support, which is safe and efficient;

[0036] (4) The flexible array support boots are used to accurately adjust and control the horizontality of the trestle and the verticality of the trestle legs in real time, ensuring the stability of the trestle.

[0037] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A flexible array type trestle leg adapted to the curved invert surface of a tunnel, characterized in that: The trestle legs are supported on both sides of the tunnel invert surface. The trestle legs are composed of a lifting drive part and a flexible array support boot installed at the bottom of the lifting drive part. A plurality of hydraulic rods arranged in a honeycomb shape are installed in the hydraulic compartment shell of the flexible array support boot. A flexible support boot is hinged at the bottom of the hydraulic rod. The hydraulic rod drives the flexible support boot to be tightly attached to the tunnel invert surface so that the trestle legs are supported on the tunnel invert surface.

2. The flexible array type trestle legs adapted to the curved invert surface of a tunnel according to claim 1, characterized in that: The hydraulic compartment shell is divided into a hydraulic pipe cluster chamber and a hydraulic distribution chamber by a partition plate. The top of the hydraulic rod is installed on the partition plate. Hydraulic pipes are arranged in the hydraulic pipe cluster chamber. One end of the hydraulic pipe passes through the hydraulic pipe hole on the partition plate to be connected with the hydraulic rod in the hydraulic distribution chamber, and the other end extends to the outside of the hydraulic compartment shell through the cluster pipe hole on the hydraulic compartment shell.

3. The flexible array type trestle legs adapted to the curved invert surface of a tunnel according to claim 2, characterized in that: A plurality of distance measuring sensors are arranged on both sides of the bottom of the partition plate.

4. The flexible array type trestle legs adapted to the curved invert surface of a tunnel according to claim 1, characterized in that: The lifting drive unit comprises a hydraulic cylinder and a leg cover, the base of the hydraulic cylinder is fixed on the hydraulic cabin shell, and the telescopic rod is connected to the leg cover.

5. The flexible array type trestle legs adapted to the curved invert surface of a tunnel according to claim 1, characterized in that: The hydraulic rods are connected via hydraulic thin-wall plates.

6. The flexible array type trestle legs adapted to the curved invert surface of a tunnel according to claim 1, characterized in that: A conical ball joint seat is installed at the bottom of the hydraulic rod, and a conical ball joint matched with the conical ball joint seat is installed at the top of the flexible support shoe.

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