Wedge-shaped steel cushion block of trestle landing leg
By installing wedge-shaped steel pads on the tunnel arch surface and using a combined structure of connecting rods, damping ball hinges and oblique jacks, the problem of uneven stress caused by square wood pads is solved, and the uniform stress and safety performance of the trest legs are improved.
Patent Information
- Application Number
- CN202420754837.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In the prior art, square wooden pads are used for the legs of the arched trestle in the tunnel, resulting in uneven stress, which can easily cause safety hazards of instability and rollover of the trestle.
A wedge-shaped steel pad is designed to be installed on both sides of the tunnel arch surface. Through a combined structure of connecting rods, damping ball hinges and oblique jacks, the wedge-shaped steel pad is ensured to fit the tunnel arch surface, and the wedge-shaped steel pad is driven to rotate along the circumferential direction of the tunnel arch surface through the oblique jack to achieve uniform stress on the legs.
By adding wedge-shaped steel pads, we ensure uniform stress on the legs of the trestle, improve the safety performance of the trestle and eliminate the hidden danger of trestle instability.
Smart Images
Figure CN222810814U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel inverts, in particular to a wedge-shaped steel cushion block for a trestle leg. Background Art
[0002] The promotion of movable inverted arch trestle has solved the problem that the excavation and support construction of the heading face and the construction of the inverted arch on the traditional trestle cannot be carried out at the same time (the tools and equipment for the construction of the heading face can pass through the upper part of the trestle, and the construction of the lower part is not affected, providing a comfortable and spacious environment for the construction workers at the lower part of the trestle); at the same time, the labor force involved has been reduced by half, and the construction production efficiency has been increased by 30%.
[0003] At present, the legs of the inverted arch trestle in the tunnel are supported on the curved inverted arch surface. Previously, multiple square timbers were used for support. The overall bonding of the square timbers was poor and the pads were uneven, which could easily cause uneven force and shift of the square timbers, resulting in instability of the trestle. Therefore, there is a safety hazard of the trestle overturning.
[0004] Therefore, a wedge-shaped steel pad for a trestle leg that can solve the above-mentioned problem is needed. Summary of the invention
[0005] The utility model aims to provide a wedge-shaped steel pad for a trestle leg according to the above-mentioned deficiencies of the prior art. After the wedge-shaped steel pad is added, the trestle leg can be fully and evenly stressed and the wedge-shaped steel pad will not shift, thereby ensuring the stability of the trestle.
[0006] The purpose of this utility model is achieved by the following technical solutions:
[0007] A wedge-shaped steel pad for a trestle leg, the wedge-shaped steel pads are respectively installed on both sides of a tunnel invert surface, a connecting rod is provided on the wedge-shaped steel pad, one end of the connecting rod is connected to the top of the wedge-shaped steel pad through a damping ball joint, and the other end is fixedly connected to the bottom surface of a steel plate, the connecting rod is connected to the wedge-shaped steel pad through an oblique jack, and the trestle leg is fixed on the top surface of the steel plate.
[0008] The base of the oblique jack is hinged to the wedge-shaped steel pad, and the telescopic rod is hinged to the connecting rod.
[0009] The oblique jack drives the wedge-shaped steel pad to rotate along the circumferential direction of the tunnel invert surface.
[0010] The shape of the bottom of the wedge-shaped steel pad is matched with the shape of the tunnel invert surface.
[0011] The steel plate is arranged horizontally, and the trestle legs are arranged perpendicular to the steel plate.
[0012] The trestle legs are vertical jacks.
[0013] The utility model has the advantages that after the wedge-shaped steel pads are added to the trestle legs, the legs are evenly stressed, the use safety of the trestle is improved, and the hidden danger of instability of the trestle is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the installation of the wedge-shaped steel pad of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the wedge-shaped steel pad of the utility model. DETAILED DESCRIPTION
[0016] 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:
[0017] like Figure 1~2 As shown, the marks in the figure represent respectively:
[0018] Wedge-shaped steel pad 1, connecting rod 2, damping ball joint 3, steel plate 4, oblique jack 5, vertical jack 6, tunnel 7.
[0019] Example: Figure 1~2 As shown, this embodiment relates to a wedge-shaped steel pad for a trestle leg. The wedge-shaped steel pad 1 is respectively installed on both sides of the inverted arch surface of the tunnel 7. The shape of the bottom of the wedge-shaped steel pad 1 is adapted to the shape of the inverted arch surface of the tunnel 7, so that the bottom of the wedge-shaped steel pad 1 fits the inverted arch surface of the tunnel 7 to ensure the stability of the trestle leg. A connecting rod 2 is provided on the wedge-shaped steel pad 1. One end of the connecting rod 2 is connected to the top of the wedge-shaped steel pad 1 through a damping ball joint 3, and the other end is fixedly connected to the bottom of a steel plate 4. The steel plate 4 is horizontally arranged. The arrangement of the damping ball joint 3 allows the wedge-shaped steel pad 1 to rotate to a certain extent, ensuring that the bottom of the wedge-shaped steel pad 1 fits the inverted arch surface of the tunnel 7.
[0020] like Figure 1~2 As shown, the connecting rod 2 is connected to the wedge-shaped steel pad 1 through the oblique jack 5, the base of the oblique jack 5 is hinged to the wedge-shaped steel pad 1, and the telescopic rod is hinged to the connecting rod 2. By adjusting the length of the oblique jack 5, the position of the wedge-shaped steel pad 1 can be adjusted, that is, the oblique jack 5 drives the wedge-shaped steel pad 1 to rotate along the circumferential direction of the inverted arch surface of the tunnel 7, and the oblique jack 5 can support the connecting rod 2. Trestle legs are fixed on the top surface of the steel plate 4. In this embodiment, the trestle legs are vertical jacks 6, and the trestle legs are arranged perpendicular to the steel plate 4.
[0021] The beneficial technical effect of this embodiment is that after the wedge-shaped steel pads are added to the pier legs, the legs are evenly stressed, the safety performance of the pier is improved, and the hidden danger of instability of the pier is eliminated.
[0022] 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 wedge-shaped steel pad for a trestle leg, characterized in that: The wedge-shaped steel pads are respectively installed on both sides of the tunnel invert surface. A connecting rod is provided on the wedge-shaped steel pad. One end of the connecting rod is connected to the top of the wedge-shaped steel pad through a damping ball joint, and the other end is fixedly connected to the bottom surface of the steel plate. The connecting rod is connected to the wedge-shaped steel pad through an oblique jack, and the trestle legs are fixed on the top surface of the steel plate.
2. A wedge-shaped steel pad for a trestle leg according to claim 1, characterized in that: The base of the oblique jack is hinged to the wedge-shaped steel pad, and the telescopic rod is hinged to the connecting rod.
3. A wedge-shaped steel pad for a trestle leg according to claim 2, characterized in that: The oblique jack drives the wedge-shaped steel pad to rotate along the circumferential direction of the tunnel invert surface.
4. The wedge-shaped steel pad for a trestle leg according to claim 1, characterized in that: The shape of the bottom of the wedge-shaped steel pad is matched with the shape of the tunnel invert surface.
5. The wedge-shaped steel pad for a trestle leg according to claim 1, characterized in that: The steel plate is arranged horizontally, and the trestle legs are arranged perpendicular to the steel plate.
6. The wedge-shaped steel pad for a trestle leg according to claim 1, characterized in that: The trestle legs are vertical jacks.