Inverted arch trestle hydraulic oil cylinder mounting mechanism

Abstract

The utility model discloses an inverted arch trestle hydraulic oil cylinder installation mechanism which comprises a main bridge and approach bridges hinged to the two sides of the main bridge, supporting leg assemblies are arranged at the lower end of the main bridge, hydraulic oil cylinders are obliquely arranged between the main bridge and the approach bridges, and the telescopic ends of the hydraulic oil cylinders are hinged to the lower ends of the approach bridges. Rotation of the approach bridge is controlled through stretching and retracting of the hydraulic oil cylinders, and a mounting assembly used for mounting the hydraulic oil cylinders is arranged on one side of the lower end of the main bridge. The mounting assembly comprises a supporting frame, fixing plates and an annular block, one side of the supporting frame is fixedly connected with the main bridge, the fixing plates are symmetrically arranged at the lower end of the other side of the supporting frame, strip-shaped openings are formed in the fixing plates, and the opening direction of the strip-shaped openings is inclined upwards; the inverted arch trestle hydraulic oil cylinder mounting mechanism can protect the hydraulic oil cylinder from being damaged under the condition that muck exists at the bottom of a tunnel, the maintenance cost is reduced, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field, concretely is a kind of inverted arch trestle hydraulic oil cylinder installation mechanism. BACKGROUND

[0002] Inverted arch trestle in tunnel construction, since tunnel bottom is slag, approach bridge on the both sides of inverted arch trestle is contacted with slag under the action of hydraulic oil cylinder, since slag is relatively virtual, under the gravity of approach bridge itself, the position of approach bridge and slag contact will continue to sink, thereby make hydraulic oil cylinder stress, seriously scrap directly, affect construction efficiency, increase maintenance cost. SUMMARY

[0003] The utility model solves the technical problems to overcome the existing defects, provide a kind of inverted arch trestle hydraulic oil cylinder installation mechanism, in the case where tunnel bottom is slag, can protect hydraulic oil cylinder from being damaged, reduce maintenance cost, improve construction efficiency, can effectively solve the problems in background art.

[0004] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of inverted arch trestle hydraulic oil cylinder installation mechanism, including main bridge and the approach bridge articulated on the both sides thereof, the lower end of the main bridge is provided with support leg assembly, the main bridge and approach bridge are inclinedly provided with hydraulic oil cylinder between, the telescopic end of the hydraulic oil cylinder is articulated with the lower end of approach bridge, approach bridge is rotated by the telescopic control of the hydraulic oil cylinder, the lower end of the main bridge one side is provided with the installation assembly for installing hydraulic oil cylinder;

[0005] The installation assembly includes support frame, fixed plate and annular block, one side of the support frame is fixedly connected with the main bridge, the other side lower end of the support frame is symmetrically provided with fixed plate, strip-shaped opening is provided on the fixed plate, the opening direction of the strip-shaped opening is inclined upward, long circular through-hole that is matched with strip-shaped opening is provided on the annular block, threaded hole is provided on the annular block and fixed plate, and they are connected by bolt between the two, and the long circular through-hole on the annular block coincides with strip-shaped opening.

[0006] The hydraulic oil cylinder is arranged between the two fixed plates, and short shaft is symmetrically arranged on the outer side of the hydraulic oil cylinder, and the short shaft passes through the long circular through-hole and strip-shaped opening.

[0007] As a preferred technical scheme of the utility model, reinforcing rib plate is arranged between the fixed plate and the support frame.

[0008] As a preferred technical scheme of the utility model, limit nut is fixed between the short shaft and the outer side of the hydraulic oil cylinder, and the size of the limit nut is greater than the size of the long circular through-hole.

[0009] As a preferred technical scheme of the utility model, the hydraulic oil cylinder is provided with a hydraulic lock.

[0010] As a preferred technical scheme of the utility model, the length of the long circular hole corresponds to the sinking depth of the approach bridge on the slag.

[0011] Compared with the prior art, the utility model has the beneficial effects that: the hydraulic oil cylinder mounting mechanism of the inverted arch approach bridge is reasonable in design and ingenious in conception, the two ends of the hydraulic oil cylinder are limited in the long circular hole of the annular block through the short shaft, when the approach bridge moves down on the slag surface, the hydraulic oil cylinder moves along the long circular hole, so that the hydraulic oil cylinder is not stressed, damage to the hydraulic oil cylinder is avoided, construction efficiency is improved, and maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the approach bridge falling process of the utility model;

[0013] Figure 2 It is Figure 1 It is an enlarged schematic view of A in the middle;

[0014] Figure 3 It is a structure schematic view of the mounting assembly;

[0015] Figure 4 It is a structure schematic view of the fixed plate;

[0016] Figure 5 It is a structure schematic view of the annular block;

[0017] Figure 6 It is a structure schematic view of the hydraulic oil cylinder.

[0018] In the drawing: 1 main bridge, 2 approach bridge, 3 leg assembly, 4 hydraulic oil cylinder, 5 mounting assembly, 51 support frame, 52 fixed plate, 53 strip opening, 54 annular block, 55 long circular hole, 56 reinforcing rib plate, 6 short shaft, 7 limit nut. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments (for the convenience of description and understanding, the following is described from the top to the bottom). Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. Figure 1

[0020] Please refer to Figures 1-6 ​The utility model provides a technical scheme: a hydraulic oil cylinder installation mechanism of inverted arch trestle, including main bridge 1 and the approach bridge 2 articulated on both sides thereof, the lower end of main bridge 1 is provided with a supporting leg assembly for supporting main bridge 1, a hydraulic oil cylinder 4 is provided between main bridge 1 and approach bridge 2 in an inclined manner, the telescopic end of hydraulic oil cylinder 4 is articulated with the lower end of approach bridge 2, and the rotation of approach bridge 2 is controlled by the telescoping of hydraulic oil cylinder 4, which facilitates vehicle traffic,

[0021] One side of the lower end of main bridge 1 is provided with an installation assembly 5 for installing hydraulic oil cylinder 4, the installation assembly 5 comprises a support frame 51, a fixed plate 52 and an annular block 54, one side of the support frame 51 is fixedly connected with main bridge 1, the other side of the support frame 51 is provided with a fixed plate 52 at the lower end in a symmetrical manner, a strip-shaped opening 53 is formed in the fixed plate 52, the opening direction of the strip-shaped opening 53 is inclined upward, a long circular through hole 55 adapted to the strip-shaped opening 53 is formed in the annular block 54, threaded holes are formed in the annular block 54 and the fixed plate 52, and the annular block 54 and the fixed plate 52 are connected by bolts, the annular block 54 and the fixed plate 52 are conveniently disassembled and assembled by the bolt connection, and during assembly, the long circular through hole 55 in the annular block 54 is ensured to coincide with the strip-shaped opening 53.

[0022] Hydraulic oil cylinder 4 is arranged between the two fixed plates 52, and short shafts 6 are symmetrically arranged on the outer side of hydraulic oil cylinder 4, the short shafts 6 pass through the long circular through hole 55 and the strip-shaped opening 53, hydraulic oil cylinder 4 is provided with a hydraulic lock, the hydraulic lock can fix hydraulic oil cylinder 4 at the upper end position of the long circular through hole 55, after the end of approach bridge 2 is placed on the surface of the muck, the approach bridge 2 sinks on the surface of the muck due to its own gravity, the short shafts 6 on the two sides of hydraulic oil cylinder 4 move downward along the length direction of the long circular through hole 55 until the bottom of the long circular through hole 55, at this time, the end of approach bridge 2 no longer sinks, and hydraulic oil cylinder 4 is not stressed in the whole process, so that damage to hydraulic oil cylinder 4 is avoided.

[0023] In order to increase the overall firmness of the installation assembly 5, reinforcing rib plates 56 are arranged between the fixed plate 52 and the support frame 51.

[0024] In order to prevent axial displacement of hydraulic oil cylinder 4 during falling, limit nuts 7 are fixed between the short shafts 6 and the outer side of hydraulic oil cylinder 4, and the size of the limit nuts 7 is greater than the size of the long circular through hole 55.

[0025] In use: the initial position of the hydraulic cylinder 4 is in the upper end of the long circular hole 55 in the annular block 54, and the position is kept by the hydraulic lock of the hydraulic cylinder 4; when the hydraulic cylinder 4 is retracted to make the approach bridge 2 rotate until the one end of the approach bridge 2 falls on the surface of the slag, the approach bridge 2 continues to sink for a distance due to the gravity; at this time, the hydraulic lock is opened after the hydraulic cylinder 4 is started; in the sinking process of the approach bridge 2, the hydraulic cylinder 4 moves downward along the length direction of the long circular hole 55 in the annular block 54; in the process, the hydraulic cylinder 4 moves downward together with the approach bridge 2, so that the hydraulic cylinder 4 is not stressed, thereby protecting the hydraulic cylinder 4 from being damaged.

[0026] The utility model can protect the hydraulic cylinder 4 from being damaged, reduce the maintenance link of the hydraulic cylinder 4, improve construction efficiency and reduce maintenance cost.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An inverted arch trestle hydraulic oil cylinder mounting mechanism, comprising a main bridge (1) and approach bridges (2) hinged on both sides of the main bridge (1), the lower end of the main bridge (1) is provided with a support leg assembly, a hydraulic oil cylinder (4) is obliquely arranged between the main bridge (1) and the approach bridge (2), the telescopic end of the hydraulic oil cylinder (4) is hinged with the lower end of the approach bridge (2), and the rotation of the approach bridge (2) is controlled through the telescopic control of the hydraulic oil cylinder (4), characterized in that: The lower end side of the main bridge (1) is provided with a mounting assembly (5) for mounting a hydraulic oil cylinder (4); The mounting assembly (5) comprises a support frame (51), a fixed plate (52) and an annular block (54), one side of the support frame (51) is fixedly connected with the main bridge (1), the other side of the support frame (51) is symmetrically provided with a fixed plate (52) at the lower end, the fixed plate (52) is provided with a strip-shaped opening (53), the opening direction of the strip-shaped opening (53) is inclined upward, the annular block (54) is provided with an oblong through hole (55) matched with the strip-shaped opening (53), the annular block (54) and the fixed plate (52) are both provided with threaded holes, and the two are connected by bolts, the oblong through hole (55) on the annular block (54) coincides with the strip-shaped opening (53); The hydraulic oil cylinder (4) is arranged between the two fixed plates (52), and the outer side of the hydraulic oil cylinder (4) is symmetrically provided with a short shaft (6), the short shaft (6) passes through the oblong through hole (55) and the strip-shaped opening (53).

2. The hydraulic cylinder mounting mechanism for an inverted arch trestle according to claim 1, characterized in that: The fixed plate (52) and the support frame (51) are provided with a reinforcing rib plate (56) therebetween.

3. The hydraulic cylinder mounting mechanism for an inverted arch trestle according to claim 1, characterized in that: The short shaft (6) and the outer side of the hydraulic oil cylinder (4) are fixedly provided with a limiting nut (7), the size of the limiting nut (7) is larger than the size of the oblong through hole (55).

4. The hydraulic cylinder mounting mechanism for an inverted arch trestle according to claim 1, characterized in that: The hydraulic oil cylinder (4) is provided with a hydraulic lock.

5. The hydraulic cylinder mounting mechanism for an inverted arch trestle according to claim 1, characterized in that: The length of the oblong through hole (55) corresponds to the sinking depth of the approach bridge (2) in the muck.

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