Auxiliary supporting device for mounting tunnel steel arch

Abstract

The utility model discloses an auxiliary supporting device for mounting a tunnel steel arch. The auxiliary supporting device comprises a first supporting arm and a second supporting arm, according to the tunnel steel arch mounting auxiliary supporting device, the inner side of a vertical supporting pipe is slidably connected with an extending supporting rod matched with the vertical supporting pipe, fixed connecting bases are symmetrically arranged on the two sides of the upper portion of the extending supporting rod, first supporting arms are hinged to the bottoms of the fixed connecting bases, and second supporting arms are hinged to the upper ends of the first supporting arms; one end of the second supporting arm is hinged to the fixed connecting base, the top ends of the extending supporting rod and the first supporting arm are both in threaded connection with threaded rods, the top ends of the threaded rods are rotationally connected with U-shaped clamping supports, a tunnel steel arch is jointly supported on the three U-shaped clamping supports, and vertical supporting is formed through the vertical supporting pipe and the extending supporting rod. The fixed connecting base is matched with the first supporting arm and the second supporting arm to form side edge supporting, so that three-head supporting can be formed through the three U-shaped clamping supports, and the tunnel steel arch is stably supported.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an auxiliary support device for installing a tunnel steel arch frame. Background Art

[0002] During tunnel construction, steel arch installation is a crucial step in supporting the rock mass during tunnel excavation. As the tunnel's primary load-bearing structure, steel arch installation is a crucial step in the process. Due to various factors, existing steel arch installation methods typically rely on manual fixing and auxiliary support devices for tension support.

[0003] The existing auxiliary support device uses a telescopic rod structure with adjustable length, with a U-shaped bracket connected to the top and a supporting base plate connected to the bottom, to assist in supporting the tunnel steel arch frame. However, it was found during use that the above-mentioned existing technology only has one support point, resulting in poor support stability for the tunnel steel arch frame. Therefore, a tunnel steel arch frame installation auxiliary support device is proposed to optimize the above-mentioned existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel steel arch installation auxiliary support device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The invention relates to an auxiliary support device for installing a tunnel steel arch frame, comprising a vertical support tube, wherein the inner side of the vertical support tube is slidably connected with an extension support rod adapted thereto, the extension support rod is fixedly installed with the vertical support tube by a first fixing bolt, and adjustment holes for the first fixing bolt to pass through are opened at equal distances on the extension support rod, the first fixing bolt passes through the extension support rod and the vertical support tube at the same time and is threadedly connected with a nut, a circular hole for the corresponding first fixing bolt to pass through is opened on the vertical support tube, fixed connection seats are symmetrically provided on both sides of the upper part of the extension support rod, and the corresponding adjustment holes on the two fixed connection seats are jointly penetrated by a second fixing bolt, and the fixed connection A circular hole for the second fixing bolt to pass through is opened on the seat, and the second fixing bolt passes through the fixed connecting seat and the extended support rod at the same time and is threadedly connected to a nut. The bottom of the fixed connecting seat is hingedly connected to the first support arm, and the upper end of the first support arm is hingedly connected to the second support arm. One end of the second support arm is hinged to the fixed connecting seat, and the top ends of the extended support rod and the first support arm are both threadedly connected to the threaded rod, and the top ends of the threaded rod are rotatably connected to the U-shaped bracket. The three U-shaped brackets jointly support the tunnel steel arch frame, and the top side wall of the threaded rod is fixedly connected to the auxiliary rotating rod. The auxiliary rotating rod is vertically arranged to the threaded rod, and the threaded rod can be conveniently rotated by the auxiliary rotating rod.

[0007] As a further solution of the present invention: a disconnect notch is provided at the bottom of the first support arm, and the end faces of the first support arm corresponding to the disconnect notch are fixedly connected with threaded columns, the threads of the threaded columns are opposite, and a threaded sleeve is commonly sleeved on the outer side of the threaded column, and the inner sides of the two ends of the threaded sleeve are respectively provided with internal threads that are threadedly connected to the corresponding threaded columns.

[0008] As a further solution of the present invention: the bottom end of the vertical support tube is fixedly connected to a bottom plate.

[0009] As a further solution of the present invention: the bottom of the vertical support tube is symmetrically hinged with an auxiliary leg, the inner side of the auxiliary leg is slidably connected with an extension leg that is compatible with it, the end of the auxiliary leg is provided with a cavity for inserting and slidingly connecting the extension leg, and the bottom end of the extension leg is hinged with a pad foot.

[0010] As a further solution of the present invention: the side wall of the auxiliary leg is threadedly connected with a first threaded handle, one end of the first threaded handle is inserted into the inner side of the auxiliary leg and rests on the outer wall of the extended leg, and a threaded hole for threaded connection of the first threaded handle is opened on the auxiliary leg.

[0011] As a further solution of the present invention: the end of the auxiliary support leg is hinged with a connecting rod, the connecting rod is hinged on the sliding sleeve, the sliding sleeve is arranged on the outside of the vertical support tube, the top circumference of the sliding sleeve is threadedly connected to the second threaded handle, and the sliding sleeve is provided with a threaded hole for threaded connection of the second threaded handle, one end of the second threaded handle is inserted into the sliding sleeve and rests on the outer wall of the vertical support tube.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model forms a vertical support through a vertical support tube and an extended support rod, and forms a side support through a fixed connecting seat in conjunction with a first support arm and a second support arm, so that a three-head support can be formed through three U-shaped brackets, so that the tunnel steel arch frame is stably supported.

[0014] The extended support rod of the utility model can slide in the vertical support tube, and can be locked and fixed in conjunction with the first fixing bolt and the adjustment hole, so that the support height can be quickly adjusted. At the same time, the fixed connecting seat is assembled and installed in combination through the second fixing bolt and the adjustment hole. The installation height can be quickly adjusted by selecting the adjustment hole, and the U-shaped bracket is further pressed against the tunnel steel arch frame by rotating the threaded rod to form a supporting effect. There is no need to rotate the threaded rod for a long time, so that the installation auxiliary support device has the function of rapid height adjustment.

[0015] The utility model enables the length of the first support arm to be adjusted through the cooperation of the threaded sleeve and the threaded column, and the inclination angle of the first support arm can be adjusted with the cooperation of the second support arm, thereby controlling the supporting direction of the first support arm.

[0016] The utility model supports the vertical support tube through the bottom plate, and simultaneously forms auxiliary support through the opened auxiliary support legs, the extended support legs and the padding feet, thereby increasing the support stability of the vertical support tube.

[0017] The extended support leg of the utility model can be retracted in the auxiliary support leg, and the auxiliary support leg can be brought close to the side of the vertical support tube by sliding of the sliding sleeve, thereby forming a storage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of an auxiliary support device for installing a tunnel steel arch frame.

[0019] Figure 2 This is an enlarged view of A in the auxiliary support device for installing a tunnel steel arch.

[0020] Figure 3 A cross-sectional view of an extended support rod in an auxiliary support device for installing a tunnel steel arch frame.

[0021] Figure 4 A diagram showing a U-shaped bracket used in an auxiliary support device for installing a tunnel steel arch frame.

[0022] In the figure: 1. Vertical support tube; 2. Extended support rod; 3. First fixing bolt; 4. Adjustment hole; 5. Fixed connecting seat; 6. Second fixing bolt; 7. First support arm; 8. Second support arm; 9. Threaded rod; 10. U-shaped bracket; 11. Auxiliary rotating rod; 12. Threaded column; 13. Threaded sleeve; 14. Base plate; 15. Auxiliary support leg; 16. Extended support leg; 17. Pad foot; 18. First threaded handle; 19. Connecting rod; 20. Sliding sleeve; 21. Second threaded handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 4In the embodiment of the present invention, a tunnel steel arch installation auxiliary support device includes a vertical support tube 1, the inner side of the vertical support tube 1 is slidably connected with an extension support rod 2 adapted thereto, the extension support rod 2 is fixedly installed with the vertical support tube 1 by a first fixing bolt 3, and the extension support rod 2 is provided with adjustment holes 4 for the first fixing bolt 3 to pass through at equal distances. The first fixing bolt 3 passes through the extension support rod 2 and the vertical support tube 1 at the same time and is threadedly connected with a nut, and the vertical support tube 1 is provided with a circular hole for the corresponding first fixing bolt 3 to pass through. Fixed connecting seats 5 are symmetrically provided on both sides of the upper part of the extension support rod 2, and the corresponding adjusting holes 4 on the two fixed connecting seats 5 are commonly penetrated by a second fixing bolt 6, and the fixed connection A circular hole for the second fixing bolt 6 to pass through is opened on the seat 5. The second fixing bolt 6 passes through the fixed connection seat 5 and the extended support rod 2 at the same time and is threadedly connected with a nut. The bottom of the fixed connection seat 5 is hinged with a first support arm 7, and the upper end of the first support arm 7 is hinged with a second support arm 8. One end of the second support arm 8 is hinged to the fixed connection seat 5. The top ends of the extended support rod 2 and the first support arm 7 are both threadedly connected with a threaded rod 9. The top ends of the threaded rod 9 are rotatably connected with a U-shaped bracket 10. The three U-shaped brackets 10 jointly support the tunnel steel arch frame. The top side wall of the threaded rod 9 is fixedly connected with an auxiliary rotating rod 11. The auxiliary rotating rod 11 is vertically arranged to the threaded rod 9, and the threaded rod 9 can be conveniently rotated by the auxiliary rotating rod 11.

[0025] Vertical support is formed by the vertical support tube 1 and the extended support rod 2, and side support is formed by the fixed connecting seat 5 in conjunction with the first support arm 7 and the second support arm 8, so that a three-head support can be formed through three U-shaped brackets 10, so that the tunnel steel arch frame is stably supported.

[0026] The extended support rod 2 can slide in the vertical support tube 1, and can be locked and fixed in conjunction with the first fixing bolt 3 and the adjustment hole 4, so as to quickly adjust the support height. At the same time, the fixed connecting seat 5 is assembled and installed in conjunction with the adjustment hole 4 through the second fixing bolt 6. The installation height can be quickly adjusted by selecting the adjustment hole 4. The U-shaped bracket 10 is further pressed against the tunnel steel arch frame by rotating the threaded rod 9 to form a supporting effect. There is no need to rotate the threaded rod 9 for a long time, so that this installation auxiliary support device has the function of rapid height adjustment.

[0027] A disconnect notch is provided at the bottom of the first support arm 7, and the end faces of the first support arm 7 corresponding to the disconnect notch are fixedly connected with threaded columns 12. The threads of the threaded columns 12 are opposite, and a threaded sleeve 13 is commonly sleeved on the outer side of the threaded column 12. The inner sides of both ends of the threaded sleeve 13 are respectively provided with internal threads threadedly connected to the corresponding threaded column 12.

[0028] The length of the first support arm 7 can be adjusted through the cooperation of the threaded sleeve 13 and the threaded column 12 , and the inclination angle of the first support arm 7 can be adjusted with the cooperation of the second support arm 8 , thereby controlling the support direction of the first support arm 7 .

[0029] The bottom end of the vertical support tube 1 is fixedly connected to a bottom plate 14 .

[0030] An auxiliary leg 15 is symmetrically hinged at the bottom of the vertical support tube 1, and an extension leg 16 that matches it is slidably connected to the inner side of the auxiliary leg 15. A cavity is provided at the end of the auxiliary leg 15 for inserting and slidingly connecting the extension leg 16, and a pad foot 17 is hinged at the bottom end of the extension leg 16.

[0031] The side wall of the auxiliary leg 15 is threadedly connected to a first threaded handle 18. One end of the first threaded handle 18 is inserted into the inner side of the auxiliary leg 15 and rests on the outer wall of the extended leg 16. A threaded hole for the first threaded handle 18 to be threadedly connected is opened on the auxiliary leg 15.

[0032] The end of the auxiliary support leg 15 is hinged with a connecting rod 19, and the connecting rod 19 is hinged on the sliding sleeve 20. The sliding sleeve 20 is arranged on the outside of the vertical support tube 1. The top circumference of the sliding sleeve 20 is threadedly connected to a second threaded handle 21. The sliding sleeve 20 is provided with a threaded hole for threaded connection of the second threaded handle 21. One end of the second threaded handle 21 is inserted into the sliding sleeve 20 and rests on the outer wall of the vertical support tube 1.

[0033] The vertical support tube 1 is supported by the bottom plate 14 , and auxiliary support is formed by the open auxiliary legs 15 , the extended legs 16 and the pads 17 , thereby increasing the support stability of the vertical support tube 1 .

[0034] The extended legs 16 can be retracted in the auxiliary legs 15 , and the sliding sleeves 20 can slide the auxiliary legs 15 close to the sides of the vertical support tubes 1 , thereby forming a storage effect.

[0035] The working principle of this utility model is:

[0036] When in use, the device is placed under the tunnel steel arch frame that needs to be supported through the bottom plate 14. At this time, the sliding sleeve 20 is slid, and the auxiliary support leg 15 is spread open by the connecting rod 19, and further tightened and fixed by the second threaded handle 21. At this time, the extended support leg 16 is pulled out from the auxiliary support leg 15, so that the pad 17 is against the ground. At this time, the extended support leg 16 is fixed by rotating the first threaded handle 18, so that the bottom of the vertical support pipe 1 forms a stable support. At this time, the extended support rod 2 is pulled upward so that the U-shaped support rod 2 connected to the top of the extended support rod 2 is The bracket 10 quickly approaches the tunnel steel arch frame, and is further locked and fixed by cooperating with the adjustment hole 4 through the first fixing bolt 3. The threaded sleeve 13 is further rotated to control the inclination angle of the first support arm 7 with the cooperation of the threaded column 12. At the same time, a suitable adjustment hole 4 is selected, and the fixed connection seat 5 is fixed by the second fixing bolt 6, so that the U-shaped bracket 10 connected to the end of the first support arm 7 is close to the tunnel steel arch frame. At this time, the threaded rod 9 is further rotated through the auxiliary rotating rod 11, so that the U-shaped bracket 10 presses the tunnel steel arch frame tightly to form an auxiliary support effect.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tunnel steel arch installation auxiliary support device, comprising a vertical support tube (1), characterized in that: The inner side of the vertical support tube (1) is slidably connected to an extension support rod (2) adapted thereto. The extension support rod (2) is fixedly mounted to the vertical support tube (1) via a first fixing bolt (3). Adjustment holes (4) for the first fixing bolt (3) to pass through are provided at equal intervals on the extension support rod (2). The first fixing bolt (3) passes through the extension support rod (2) and the vertical support tube (1) at the same time and is then threadedly connected to a nut. Fixed connection seats (5) are symmetrically provided on both sides of the upper portion of the extension support rod (2). The corresponding adjustment holes (4) on the two fixed connection seats (5) are jointly penetrated by a second fixing bolt (4). The fixed bolt (6) and the second fixed bolt (6) simultaneously penetrate the fixed connection seat (5) and the extended support rod (2) and are then threadedly connected to a nut. The bottom of the fixed connection seat (5) is hinged with a first support arm (7). The upper end of the first support arm (7) is hinged with a second support arm (8). One end of the second support arm (8) is hinged with the fixed connection seat (5). The top ends of the extended support rod (2) and the first support arm (7) are both threadedly connected to a threaded rod (9). The top end of the threaded rod (9) is rotatably connected to a U-shaped bracket (10). The top side wall of the threaded rod (9) is fixedly connected to an auxiliary rotating rod (11).

2. The tunnel steel arch installation auxiliary support device according to claim 1, characterized in that: The bottom of the first support arm (7) is provided with a disconnected notch, and the end faces of the first support arm (7) corresponding to the disconnected notch are fixedly connected with threaded columns (12), the threads of the threaded columns (12) are opposite, and the outer sides of the threaded columns (12) are jointly sleeved with threaded sleeves (13), and the inner sides of the two ends of the threaded sleeves (13) are respectively provided with internal threads threadedly connected to the corresponding threaded columns (12).

3. The tunnel steel arch installation auxiliary support device according to claim 1, characterized in that: The bottom end of the vertical support tube (1) is fixedly connected to a bottom plate (14).

4. The tunnel steel arch installation auxiliary support device according to claim 1, characterized in that: The bottom of the vertical support tube (1) is symmetrically hinged with an auxiliary leg (15), the inner side of the auxiliary leg (15) is slidably connected with an extension leg (16) adapted thereto, and the bottom end of the extension leg (16) is hinged with a pad foot (17).

5. The tunnel steel arch installation auxiliary support device according to claim 4, characterized in that: The side wall of the auxiliary leg (15) is threadedly connected to a first threaded handle (18), and one end of the first threaded handle (18) is inserted into the inner side of the auxiliary leg (15) and abuts against the outer wall of the extension leg (16).

6. The tunnel steel arch installation auxiliary support device according to claim 4, characterized in that: The end of the auxiliary support leg (15) is hinged with a connecting rod (19), which is hinged on a sliding sleeve (20). The sliding sleeve (20) is arranged on the outside of the vertical support tube (1). The top circumference of the sliding sleeve (20) is connected to a second threaded handle (21) through a threaded connection. One end of the second threaded handle (21) is inserted into the sliding sleeve (20) and abuts against the outer wall of the vertical support tube (1).

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