Tunnel assembly type supporting lagging jack and connecting device thereof

Abstract

The utility model discloses a tunnel assembly type supporting lagging jack and a connecting device thereof. The tunnel assembly type supporting lagging jack comprises two limiting shells, a supporting device and a movable device. The limiting shell abuts against the two vertically-connected tunnel I-shaped steel sections. The supporting device is arranged on the limiting shell through the multiple movable devices and fixes the two vertically-connected tunnel I-shaped steel sections. The supporting device comprises a supporting rod, a hard spring, a connecting pipe and a supporting block; one end of the supporting rod is connected with the movable device through a connecting pipe, a plurality of hard springs are arranged at the other end of the supporting rod, a plurality of supporting blocks are arranged at the other ends of the hard springs, and friction layers are arranged on the surfaces of the supporting blocks and abut against the tunnel rock wall; the position of the tunnel I-shaped steel can be determined, the supporting and fixing functions of I-shaped steel connection on a tunnel engineering construction site are achieved, it is guaranteed that the upper I-shaped steel and the lower I-shaped steel reach the preset positions, connection on the construction site is facilitated, safety and stability in the construction process are guaranteed, and the requirement for tunnel construction quality is met.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel assembled support arch frame and a connecting device thereof. Background Art

[0002] During tunnel construction, steel arches are required for initial support. The strength of the steel arches is directly related to the overall quality of tunnel construction. Steel arches are generally fabricated on-site, requiring multiple sections of I-beams to be connected in sequence according to the tunnel's outline dimensions. Existing tunnel projects often encounter difficulties in stacking I-beams into their intended positions, making it difficult to insert bolts into the drilled holes of the upper and lower I-beams for fastening. In some cases, welding is used to connect the two I-beams because bolts are difficult to connect. This can lead to problems such as poor construction workmanship, resulting in accidents such as the I-beam tipping over or collapsing. This can affect the safety and stability of the construction process, adversely impacting both construction quality and schedule. Utility Model Content

[0003] The utility model provides a tunnel assembled support arch frame and its connection device, so as to overcome the technical problem that during the tunnel construction process, the I-beams cannot be stacked to the specified position for fixed connection, resulting in the difficulty of fixing the I-beams in the construction project, thus causing safety problems and failing to meet the tunnel construction quality standards.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A tunnel assembled support arch frame and its connecting device, comprising: two limiting shells, a supporting device and a movable device;

[0006] The limiting shell is in contact with the two tunnel I-beams connected up and down; the supporting device is provided on the limiting shell through a plurality of movable devices, and is used to fix the two tunnel I-beams connected up and down;

[0007] The support device includes a support rod, a hard spring, a connecting tube and a support block; one end of the support rod is connected to the movable device through a plurality of the connecting tubes, the other end of the support rod is provided with a plurality of the hard springs, the other ends of the plurality of the hard springs are provided with a plurality of the support blocks, and the surfaces of the plurality of the support blocks are provided with a friction layer, which abuts against the tunnel rock wall through the friction layer.

[0008] Furthermore, it also includes a limiting hole, a spring and a pressing button;

[0009] The plurality of limiting holes are respectively arranged on the tube walls at both ends of the connecting tube and on one end of the support rod connected to the connecting tube. The spring is arranged in the cavity of the connecting tube and is perpendicular to the connecting tube. Press buttons are provided at both ends of the spring, and the press buttons pass through the limiting holes and are connected to the support rod or other connecting tubes.

[0010] Furthermore, the upper surfaces of the inner sides of the two limiting shells are respectively in contact with the upper surfaces of the lower wing plates of the upper tunnel I-beam, the lower surfaces of the inner sides of the two limiting shells are respectively in contact with the lower surfaces of the upper wing plates of the lower tunnel I-beam, and the side surfaces of the inner sides of the two limiting shells are respectively in contact with the two side surfaces of the short sides of the lower wing plates of the upper tunnel I-beam and the upper wing plates of the lower tunnel I-beam, thereby fixing the two sections of tunnel I-beams.

[0011] Furthermore, it also includes a plurality of support sleeves; the plurality of support sleeves are arranged at the other end of the support rod, and the hard spring is arranged in the support sleeve and connected to the support rod.

[0012] Furthermore, the plurality of movable devices are provided on the sides of the two limiting housings facing the tunnel rock wall; the movable devices include a rotating shaft and a housing;

[0013] The rotating shaft passes through the connecting pipe and the housing to connect the connecting pipe with the movable device.

[0014] Furthermore, the two limiting shells are provided with a plurality of fixing slots, and fixing screws pass through the fixing slots to fix the positions of the two limiting shells.

[0015] Furthermore, the length of one side where the two limiting shells abut against the upper surface of the lower wing plate of the upper tunnel I-beam is the same as that of the lower wing plate of the upper tunnel I-beam, and the length of one side where the two limiting shells abut against the lower surface of the upper wing plate of the lower tunnel I-beam is smaller than the other side.

[0016] Beneficial effect: The utility model provides a tunnel assembled support arch frame and its connecting device. By designing a limit shell to abut against the tunnel I-beam, the position of the tunnel I-beam can be determined. By designing a supporting device and a movable device, the length of the supporting device can be lengthened and abutted against the tunnel rock wall on the rear side of the tunnel I-beam through the friction layer, ensuring that the supporting device is stably attached to the rock wall, meeting the supporting and fixing functions of the I-beam connection at the tunnel engineering construction site, ensuring that the upper and lower sections of the I-beam reach the predetermined position, and facilitating connection at the construction site; at the same time, the device also reduces the probability of accidents such as rollover and collapse of the I-beam during construction to a certain extent by fixing the I-beam, thereby ensuring the safety and stability of the construction process and meeting the requirements of tunnel construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is an overall structural diagram of a tunnel assembled support arch frame and its connecting device provided by the utility model;

[0019] Figure 2 A structural diagram of the support device provided by the utility model;

[0020] Figure 3 This is a front view of the utility model when in use;

[0021] Figure 4 This is a side view of the utility model when in use;

[0022] Figure 5 This is a structural diagram of the movable device provided by the utility model.

[0023] In the figure, 1. limiting housing; 2. movable device; 3. support rod; 4. support sleeve; 5. hard spring; 6. connecting pipe; 7. support block; 8. fixing screw; 9. limiting hole; 10. tunnel I-beam; 11. fixing groove; 21. rotating shaft; 22. housing; 61. spring; 62. push button; 71. friction layer. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 shall fall within the scope of protection of the present invention.

[0025] This embodiment provides a tunnel assembled support arch frame and its connection device, such as Figure 1 As shown, it includes: two limiting shells 1, a supporting device and a movable device 2;

[0026] The limiting housing 1 is in contact with the two tunnel I-beams 10 connected up and down; the supporting device is provided on the limiting housing 1 through a plurality of movable devices 2, and is used to fix the two tunnel I-beams 10 connected up and down;

[0027] The support device includes a support rod 3, a hard spring 5, a connecting tube 6 and a support block 7; one end of the support rod 3 is connected to the movable device 2 through multiple connecting tubes 6, and the other end of the support rod 3 is provided with multiple hard springs 5, and the other end of the multiple hard springs 5 ​​is provided with multiple support blocks 7, and the surfaces of the multiple support blocks 7 are provided with a friction layer 71, which abuts against the tunnel rock wall through the friction layer 71.

[0028] Specifically, the device is provided with two limiting shells, and the side in contact with the tunnel I-beam is respectively provided with holes of the same size as the left and right wing plates of the tunnel I-beam, the lower surfaces inside the holes of the two limiting shells abut against the lower surfaces of the upper wing plates of the lower tunnel I-beam, and the side surfaces inside abut against the side surfaces of the upper wing plates of the lower tunnel I-beam, a fixing groove is provided on the limiting shell, and the positions of the two limiting shells are fixed by screws passing through the fixing groove; a movable device is provided on the side of the limiting shell opposite to the tunnel rock wall, and a supporting device is provided on the movable device, and the supporting device is connected to the supporting rod and the supporting block by setting a plurality of connecting pipes, so that the supporting device can be fixed on the rock wall at different distances from the supporting device. The positions of the limiting shell and the tunnel I-beam are fixed; a plurality of hard springs are provided on the support rod, and in this embodiment, the number of hard springs is 4. The provision of hard springs can reduce the pressure exerted on the support device by the rock wall; a friction layer is provided on the support block, and the friction layer contacts the rock wall, which can increase the friction force and ensure that the support device is stably fixed to the rock wall; after the position of the lower I-beam is determined, the upper I-beam is placed between the two limiting shells by a crane, and abutted against the lower I-beam, and the limiting shell is fixed to the upper I-beam with screws passing through the upper fixing groove, which reduces the possibility of misalignment of the upper and lower I-beams and ensures the stability of the I-beam connection process.

[0029] In a specific embodiment, Figure 2 As shown, it also includes a limiting hole 9, a spring 61 and a pressing button 62;

[0030] The plurality of limiting holes 9 are respectively arranged on the tube walls at both ends of the connecting tube 6 and on one end of the support rod 3 connected to the connecting tube 6. The spring 61 is arranged in the cavity of the connecting tube 6 and is perpendicular to the connecting tube 6. Press buttons 62 are provided at both ends of the spring 61. The press buttons 62 pass through the limiting holes 9 and are connected to the support rod 3 or other connecting tubes 6.

[0031] Specifically, one end of the connecting pipe is smaller in diameter than the other end, both ends of the plurality of connecting pipes and the support rod are connected with the connecting pipes and are provided with two limiting holes; the smaller end is inserted into the larger end of the other connecting pipe to be connected; the two ends of the spring are welded with the pressing buttons respectively, the limiting hole is smaller in diameter than the pressing button, the spring is contracted, and then the pressing button is clamped in the two limiting holes of the smaller end of the connecting pipe; the pressing button is clamped in the limiting hole of the larger end of the connecting pipe or the support rod to be connected, and several connecting pipes and support rods are connected to support and fix on the rock wall of any shape.

[0032] In specific embodiments, as shown in Figure 1 and Figure 3 the upper surfaces of the inner sides of the two limiting housings 1 respectively abut the upper surfaces of the lower flanges of the upper tunnel I-beams 10, the lower surfaces of the inner sides of the two limiting housings 1 respectively abut the lower surfaces of the upper flanges of the lower tunnel I-beams 10, and the side surfaces of the inner sides of the two limiting housings 1 respectively abut the two side surfaces of the short sides of the lower flanges of the upper tunnel I-beams 10 and the upper flanges of the lower tunnel I-beams 10, thereby fixing the two sections of tunnel I-beams 10.

[0033] In the embodiment, the limiting housings are placed on the two sides of the tunnel I-beams and abut the two sides of the web plates of the tunnel I-beams, the limiting housings are connected with the I-beams by being arranged, and the left and right housings are fixed by the embedding action of the fixing grooves and the fixing screws, which to some extent prevents the misalignment of the upper and lower sections of I-beams and ensures the stability of the I-beam connection process.

[0034] In specific embodiments, as shown in Figure 2 the embodiment further comprises a plurality of support sleeves 4; the plurality of support sleeves 4 are arranged at the other end of the support rod 3, and the hard springs 5 are arranged in the support sleeves 4 and connected with the support rod 3.

[0035] In the embodiment, the support sleeves are arranged outside the hard springs, so that even if the stress received by the support device is greater than the elastic force of the spring, the support sleeves can still support the support blocks and prevent the spring from deforming too much to affect the support system.

[0036] In specific embodiments, as shown in Figure 4 and Figure 5 the plurality of movable devices 2 are arranged on the side of the two limiting housings 1 facing the tunnel rock wall; the movable device 2 comprises a rotating shaft 21 and a housing 22;

[0037] the rotating shaft 21 passes through the connecting pipe 6 and the housing 22 to connect the connecting pipe 6 with the movable device.

[0038] Specifically, in this embodiment, a through hole is provided on the connecting tube connected to the movable device, which passes through the wall of the connecting tube. The connecting tube is placed on the outer shell of the movable device, and the rotating shaft passes through the through hole on the outer shell of the movable device and the through hole on the connecting tube to fix the connecting tube to the movable device.

[0039] In a specific embodiment, the two limiting shells 1 are provided with a plurality of fixing grooves 11, and the fixing screws 8 pass through the fixing grooves 11 to fix the positions of the two limiting shells 1; the length of one side of the two limiting shells 1 abutting the upper surface of the lower wing plate of the upper tunnel I-beam 10 is the same as the lower wing plate of the upper tunnel I-beam 10, and the length of one side of the two limiting shells 1 abutting the lower surface of the upper wing plate of the lower tunnel I-beam 10 is smaller than the other side.

[0040] In this embodiment, the fixing grooves are threaded grooves. Two threaded grooves are provided at the position where the limit housing abuts against the waist plate of the upper tunnel I-beam, and two threaded grooves are provided at the position where the limit housing abuts against the two sides of the upper wing plate of the lower tunnel I-beam. The limit housing is fixed to the upper and lower connected tunnel I-beams by passing the fixing screws through the threaded grooves.

[0041] The length of one side of the limit housing is smaller than the other side, such as Figure 3 As shown, the unconnected parts are fixedly connected with the upper and lower tunnel I-beams by fixing screws, which ensures the stability of the I-beam connection process and avoids the rollover accident of the lower I-beam that may be caused during the installation of the I-beam.

[0042] The process of using this device is as follows:

[0043] During the construction process, first support a tunnel I-beam on the ground and fix it well, then install the left and right limit shells on both sides of the lower tunnel I-beam respectively, and screw the fixing screws into the threaded grooves under the limit shells for fixing; weld the push button on the spring, press the push button to install it on the connecting pipe, insert the connecting pipe into the support rod until the overall length can be fixed on the rock wall at a suitable angle, stop the connection, support the two support devices on the rock wall through the friction layer, and fix the support devices; use a crane to put the upper tunnel I-beam into the middle of the limit shells on both sides, abut against the lower tunnel I-beam, install the fixing screws in the threaded grooves above the limit shells, and fix the position of the upper tunnel I-beam; after fixing, screw the fixing screws on the upper structure 7, and then remove the hook of the crane; after fixing, screw the fixing screws into the lower tunnel I-beam to fix the two tunnel I-beams in connection;

[0044] After the connection is completed, press the hard spring to retract the support rod, remove the support device and the connecting pipe, unscrew the fixing screws in the upper and lower limit housings, remove the left and right limit housings, and complete the fixation of the tunnel I-beam;

[0045] This device can meet the support and fixing functions of the I-beam connection at the tunnel construction site, ensuring that the upper and lower sections of the I-beam reach the predetermined position, which is convenient for connection at the construction site; at the same time, this device also fixes the I-beam, thereby reducing the probability of accidents such as rollover and collapse of the I-beam during construction to a certain extent, thereby ensuring the safety and stability of the construction process.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tunnel assembled support arch and its connecting device, characterized in that: include: Two limiting shells (1), a supporting device and a movable device (2); The limiting housing (1) abuts against two tunnel I-steels (10) connected above and below; The supporting device is provided on the limiting housing (1) via a plurality of the movable devices (2) and is used to fix two sections of tunnel I-steel (10) connected up and down; The support device comprises a support rod (3), a hard spring (5), a connecting pipe (6) and a support block (7); one end of the support rod (3) is connected to the movable device (2) through a plurality of the connecting pipes (6); the other end of the support rod (3) is provided with a plurality of the hard springs (5); the other ends of the plurality of the hard springs (5) are provided with a plurality of the support blocks (7); the surfaces of the plurality of the support blocks (7) are provided with a friction layer (71), and the friction layer (71) is used to abut against the tunnel rock wall.

2. A tunnel assembled support arch and its connecting device according to claim 1, characterized in that: It also includes a limiting hole (9), a spring (61) and a pressing button (62); The plurality of limiting holes (9) are respectively arranged on the tube walls at both ends of the connecting tube (6) and on one end of the supporting rod (3) connected to the connecting tube (6); the spring (61) is arranged in the cavity of the connecting tube (6) and is perpendicular to the connecting tube (6); pressing buttons (62) are provided at both ends of the spring (61); the pressing buttons (62) pass through the limiting holes (9) and are connected to the supporting rod (3) or other connecting tubes (6).

3. The tunnel assembled support arch and its connecting device according to claim 1, characterized in that: The upper surfaces of the inner sides of the two limiting shells (1) are respectively in contact with the upper surfaces of the lower wing plates of the upper tunnel I-beam (10), the lower surfaces of the inner sides of the two limiting shells (1) are respectively in contact with the lower surfaces of the upper wing plates of the lower tunnel I-beam (10), and the side surfaces of the inner sides of the two limiting shells (1) are respectively in contact with the two side surfaces of the short sides of the lower wing plates of the upper tunnel I-beam (10) and the upper wing plates of the lower tunnel I-beam (10), thereby fixing the two sections of the tunnel I-beam (10).

4. The tunnel assembled support arch and its connecting device according to claim 1, characterized in that: It also includes a plurality of support sleeves (4); the plurality of support sleeves (4) are arranged at the other end of the support rod (3); the hard spring (5) is arranged in the support sleeve (4) and is connected to the support rod (3).

5. The tunnel assembled support arch and its connecting device according to claim 1, characterized in that: The plurality of movable devices (2) are arranged on one side of the two limiting housings (1) facing the tunnel rock wall; the movable devices (2) include a rotating shaft (21) and a housing (22); The rotating shaft (21) passes through the connecting pipe (6) and the housing (22) to connect the connecting pipe (6) with the movable device.

6. The tunnel assembled support arch and its connecting device according to claim 1, characterized in that: The two position-limiting shells (1) are provided with a plurality of fixing slots (11), and fixing screws (8) pass through the fixing slots (11) to fix the positions of the two position-limiting shells (1).

7. The tunnel assembled support arch and its connecting device according to claim 3, characterized in that: The length of one side where the two limiting shells (1) abut against the upper surface of the lower wing plate of the upper tunnel I-beam (10) is the same as the lower wing plate of the upper tunnel I-beam (10), and the length of one side where the two limiting shells (1) abut against the lower surface of the upper wing plate of the lower tunnel I-beam (10) is smaller than the other side.

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