Lifting mechanism for mounting hydraulic cylinder with widened vault

Abstract

The utility model discloses a lifting mechanism for installing a vault widened hydraulic cylinder, which comprises a first fixed pulley, a second fixed pulley, a third fixed pulley, a suspension rope, a hydraulic cylinder clamping device and a winding device, the second fixed pulley and the third fixed pulley are located on the two sides above the to-be-installed position of the hydraulic cylinder, the first fixed pulley and the second fixed pulley are of a double-grooved-wheel structure, the third fixed pulley is of a single-grooved-wheel structure, and the first fixed pulley is arranged close to the outer end of the bottom cross beam. One end of one suspension rope is connected to the winding device after bypassing the third fixed pulley, the second fixed pulley and the first fixed pulley, one end of the other suspension rope is connected to the winding device after bypassing the second fixed pulley and the first fixed pulley, and the other ends of the two suspension ropes are fixedly connected to the left side and the right side of the hydraulic cylinder clamping device respectively. The winding device is fixedly connected to a supporting sleeve arranged at the end of a longitudinal beam at the bottom of the secondary lining trolley.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for a secondary lining trolley of a single tunnel, and relates to a lifting mechanism for installing a hydraulic cylinder with a widened arch. Background Art

[0002] During the construction of a single-track railway tunnel, the cross-section of the tunnel's secondary lining will change. When widening, the second lining trolley that can be widened will be widened, mainly for the widening of the symmetrical two-half arch structure. Before widening, the hydraulic cylinder needs to be installed to the installation position, that is, the two ends of the hydraulic cylinder are respectively hinged on the single-side arch push position and the top crossbeam of the portal frame. The hydraulic cylinder can be used to move the arch toward the outside, and then the middle part of the structure can be installed to complete the widening. Since the second lining trolley of a single tunnel is a narrow and flat structure, it is time-consuming and labor-intensive to use a ladder or directly send it to the set position, and the safety during the climbing process is poor. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a lifting mechanism for installing a hydraulic cylinder with a widened arch, which saves time and labor and improves operation safety.

[0004] The technical solution adopted by the utility model is: a lifting mechanism for installing a hydraulic cylinder with a widened arch roof, comprising a first fixed pulley, a second fixed pulley, a third fixed pulley, a suspension rope, a hydraulic cylinder clamping device and a winding device, the first fixed pulley, the second fixed pulley and the third fixed pulley are respectively suspended and installed on the bottom cross beam of the arch roof structure of the second lining trolley, the second fixed pulley and the third fixed pulley are located on both sides above the hydraulic cylinder to be installed position. The first fixed pulley and the second fixed pulley adopt a double-groove pulley structure, and the third fixed pulley adopts a single-groove pulley structure. The first fixed pulley is arranged near the outer end of the bottom cross beam, and two suspension ropes are adopted, one end of which is connected to the winding device after passing through the third fixed pulley, the second fixed pulley and the first fixed pulley, and one end of the other suspension rope is connected to the winding device after passing through the second fixed pulley and the first fixed pulley. The other ends of the two suspension ropes are fixedly connected to the left and right sides of the hydraulic cylinder clamping device, and the winding device is fixedly connected to the support sleeve arranged at the end of the bottom longitudinal beam of the second lining trolley.

[0005] Furthermore, the above-mentioned hydraulic cylinder clamping device includes an upper half shell and a lower half shell, one side of the upper half shell and the lower half shell are connected by a hinge, and the other side is locked by a screw and a nut, the lower end of the screw is hinged to a U-shaped notch set on the lower half shell, the screw rotates to the U-shaped notch 2 set on the upper half shell and is locked with a nut, and high-density foam mold 1 and high-density foam mold 2 are respectively provided in the upper half shell and the lower half shell, and the high-density foam mold 1 and the high-density foam mold 2 are provided with a accommodating cavity that can elastically squeeze the hydraulic cylinder.

[0006] Furthermore, a hanging ring for hanging a suspension rope is provided on the top of the upper half shell.

[0007] Furthermore, the above-mentioned winding device includes a double-grooved winding drum, which is rotatably connected to the winding frame through a rotating shaft, and one end of the rotating shaft is extended and connected to a self-locking worm gear transmission. The input shaft of the worm gear transmission extends downward and is arranged away from the side of the support sleeve, and the input shaft is connected to a rotating handle.

[0008] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model fixes the hydraulic cylinder to be installed on the hydraulic cylinder clamping device, and suspends the hydraulic cylinder clamping device on the suspension rope, and the hydraulic cylinder is lifted by winding the winding device, which greatly improves the operational safety, saves time and effort, adopts double-rope lifting, and has better lifting stability. The double-groove wheel structure does not affect the mutual suspension process, and the hydraulic cylinder is placed with a hydraulic cylinder clamping device to play a protective role, avoiding damage by impact during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the lifting mechanism installation structure for installing the hydraulic cylinder for widening the arch;

[0010] Figure 2 It is a schematic diagram of the cross-sectional structure of the hydraulic cylinder clamping device;

[0011] Figure 3 It is a schematic diagram of the winding device from a top view;

[0012] Figure 4 It is a schematic diagram of the front structure of the winding device. DETAILED DESCRIPTION

[0013] The invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1: Figures 1 to 4 As shown, a lifting mechanism for installing a hydraulic cylinder with a widened arch comprises a first fixed pulley 3, a second fixed pulley 2, a third fixed pulley 1, a suspension rope 4, a hydraulic cylinder clamping device 5 and a winding device 6. The first fixed pulley 3, the second fixed pulley 2 and the third fixed pulley 1 are respectively suspended and installed on the bottom crossbeam 7 of the second lining trolley arch structure. The second fixed pulley 2 and the third fixed pulley 1 are located on both sides above the position where the hydraulic cylinder is to be installed. The first fixed pulley 3 and the second fixed pulley 2 adopt a double-groove pulley structure, and the third fixed pulley 1 adopts a single The sheave structure, the first fixed pulley 3 is arranged near the outer end of the bottom cross beam 7, and two suspension ropes 4 are used, one end of one suspension rope 4 is passed around the third fixed pulley 1, the second fixed pulley 2 and the first fixed pulley 3 and then connected to the winding device 6, and the other end of the other suspension rope 4 is passed around the second fixed pulley 2 and the first fixed pulley 3 and then connected to the winding device 6, the other ends of the two suspension ropes 4 are fixedly connected to the left and right sides of the hydraulic cylinder clamping device 5 respectively, and the winding device 6 is fixedly connected to the support sleeve 9 provided at the end of the bottom longitudinal beam of the second lining trolley 8.

[0015] In order to facilitate the placement of the hydraulic cylinder, the hydraulic cylinder clamping device 5 includes an upper half shell 501 and a lower half shell 502. One side of the upper half shell 501 and the lower half shell 502 is connected by a hinge 503, and the other side is locked by a screw 504 and a nut 505. The lower end of the screw 504 is hinged to the U-shaped notch 1 506 set on the lower half shell 502, and the screw 504 is rotated to the U-shaped notch 2 507 set on the upper half shell 501 and locked with a nut 505. A high-density foam mold 1 508 and a high-density foam mold 2 509 are respectively provided in the upper half shell 501 and the lower half shell 502. The high-density foam mold 1 508 and the high-density foam mold 2 509 are provided with a accommodating cavity 510 that can elastically squeeze the hydraulic cylinder. The hydraulic cylinder is installed in the half structure, and loading and unloading are convenient and quick, and the locking is reliable and stable. The high-density foam mold is used to elastically clamp the hydraulic cylinder. On the one hand, it plays an elastic buffering role, and on the other hand, it is more conducive to stability on the clamping device, thereby improving lifting stability.

[0016] In order to facilitate the installation of the suspension rope on the clamping device, a hanging ring 511 for hanging the suspension rope 4 is provided on the top of the upper half shell 501. The hanging ring is bolted to the suspension rope or the suspension rope is connected to the anti-slip hook and then hung. The operation is convenient and quick. A counterweight block is bolted to the end of the suspension rope, which is convenient for loading and unloading. In addition, the counterweight block increases the descent speed during the descent of the suspension rope and also plays a role in preventing the suspension rope from slipping off.

[0017] In order to realize the gradual self-locking lifting, the winding device 6 includes a double-grooved winding drum 601, which is connected to the winding frame 602 through a rotating shaft, and one end of the rotating shaft is extended and connected to a self-locking worm gear transmission 603. The input shaft of the worm gear transmission 603 extends downward and is arranged away from the side of the support sleeve 9. The input shaft is connected to a rotating handle 604. The winding drum is driven to rotate by rotating the self-locking worm gear transmission to loosen the suspension rope or wind up the suspension rope, which can be realized at any time. It is self-locking, easy and quick to operate, and the vertically arranged rotating handle is easy to operate. The worm gear transmission 603 includes a worm wheel 605, a worm 606 and a housing 607. The worm wheel 605 is horizontally connected to the housing 607. The worm 606 meshing with the worm wheel is vertically connected to the housing 607 at both ends and one end is extended and fixedly connected to the rotating handle 604. The wheel axle and the rotating shaft of the worm wheel 605 are an integrated structure. The winding frame 602 is a U-shaped groove structure, and one end is fixedly connected to the housing by screws.

[0018] During use: operate the rotary handle to lower the suspension rope connected to the hydraulic cylinder clamping device close to the ground and connect it, then place the hydraulic cylinder into the hydraulic cylinder clamping device and fix it, slowly operate the rotary handle to slowly lift the hydraulic cylinder to the set position, manually hinge the two ends of the hydraulic cylinder to the double-ear seat set on the front side of the top cross beam and the double-ear seat set at the end of the lower sliding beam of the arch. After installation is completed, loosen and remove the hydraulic cylinder clamping device, operate the rotary handle, lower the hydraulic cylinder clamping device to the ground and remove it, connect it to the counterweight block, lift the suspension rope to the set position, and complete the hydraulic cylinder lifting operation. When the trolley is widened and the hydraulic cylinder needs to be lowered again, lower the suspension rope connected to the counterweight block to the ground, connect the hydraulic cylinder clamping device, lift it to the set position, install it on the hydraulic cylinder, loosen the two hinges of the hydraulic cylinder, operate the rotary handle, lower the hydraulic cylinder to the ground, and complete the lowering operation of the hydraulic cylinder.

[0019] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A lifting mechanism for installing a hydraulic cylinder with a widened arch, characterized in that: The invention comprises a first fixed pulley (3), a second fixed pulley (2), a third fixed pulley (1), a suspension rope (4), a hydraulic cylinder clamping device (5) and a winding device (6); the first fixed pulley (3), the second fixed pulley (2) and the third fixed pulley (1) are respectively suspended and installed on the bottom crossbeam (7) of the arch structure of the second lining trolley; the second fixed pulley (2) and the third fixed pulley (1) are located on both sides above the position where the hydraulic cylinder is to be installed; the first fixed pulley (3) and the second fixed pulley (2) adopt a double-groove pulley structure; the third fixed pulley (1) adopts a single-groove pulley structure; the first fixed pulley (3) Arranged near the outer end of the bottom crossbeam (7), two suspension ropes (4) are used, one end of one suspension rope (4) is passed around the third fixed pulley (1), the second fixed pulley (2) and the first fixed pulley (3) and then connected to the winding device (6), and the other end of the other suspension rope (4) is passed around the second fixed pulley (2) and the first fixed pulley (3) and then connected to the winding device (6), the other ends of the two suspension ropes (4) are respectively fixedly connected to the left and right sides of the hydraulic cylinder clamping device (5), and the winding device (6) is fixedly connected to the support sleeve (9) provided at the end of the bottom longitudinal beam of the second lining trolley (8).

2. The lifting mechanism for installing a hydraulic cylinder with a widened dome according to claim 1, characterized in that: The hydraulic cylinder clamping device (5) comprises an upper half shell (501) and a lower half shell (502), wherein one side of the upper half shell (501) and the lower half shell (502) are connected by a hinge (503), and the other side is locked by a screw rod (504) and a nut (505), wherein the lower end of the screw rod (504) is hinged to a U-shaped notch 1 (506) provided on the lower half shell (502), and the screw rod (504) is rotated to a U-shaped notch 2 (507) provided on the upper half shell (501) and is locked by a nut (505), and a high-density foam mold 1 (508) and a high-density foam mold 2 (509) are respectively provided in the upper half shell (501) and the lower half shell (502), and the high-density foam mold 1 (508) and the high-density foam mold 2 (509) are provided with an accommodating cavity (510) capable of elastically squeezing the hydraulic cylinder.

3. The lifting mechanism for installing a hydraulic cylinder with a widened dome according to claim 1, characterized in that: A hanging ring (511) for hanging a suspension rope (4) is provided on the top of the upper half shell (501).

4. The lifting mechanism for installing a hydraulic cylinder with a widened dome according to claim 1, characterized in that: The winding device (6) comprises a double-grooved winding drum (601), which is rotatably connected to a winding frame (602) via a rotating shaft, and one end of the rotating shaft extends outward and is connected to a self-locking worm gear transmission (603). The input shaft of the worm gear transmission (603) extends downward and is arranged away from the side of the support sleeve (9), and the input shaft is connected to a rotating handle (604).

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