Adjustable support frame for spillway tunnel excavation

Abstract

The utility model relates to a spillway support frame technical field, especially a kind of adjustable support frame of spillway tunnel body excavation, including two supporting members, the supporting member includes first support and two second supports, the cross section of first support and two second supports are all I-shaped structure, the both sides of first support inner wall are all provided with sliding slot, and the positioning plate end part is respectively with second support inner wall sliding fit. In the utility model, the first support of upper supporting member is placed in preset position, two second supports are placed in the both ends of first support, the positioning plate is moved by respectively sliding slider, the positioning plate of the both ends of first support is slid into second support, first support is supported by two second supports, the manpower used for supporting first support is saved, the number of installation personnel in narrow space is reduced, the difficulty of alignment is reduced, splicing time is shortened, collision interference when many people operate is avoided, installation efficiency is improved and safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spillway tunnel support frame technology, and more specifically, to an adjustable support frame for spillway tunnel excavation. Background Technology

[0002] Adjustable support frames for spillway excavation are temporary or permanent support structures used to support the tunnel body, prevent surrounding rock collapse, and flexibly adjust support parameters according to changes in geological conditions. In spillway excavation projects, the support frame is a core facility ensuring construction safety; its installation efficiency and structural stability directly affect project progress and operational safety.

[0003] Traditional spillway support frames typically employ a modular structure, composed of multiple support units assembled together. Taking a common "arched" support frame as an example, installation requires at least several workers working together. Workers must lift the first support frame, then move the second supports on either side, aligning the ends of the two second supports with the ends of the first support frame, and securing them together with bolts or clips. However, the interior space of spillways is narrow, especially in small and medium-sized spillways where the clear width is often small. When multiple workers are working simultaneously, the operating space is severely limited, increasing the risk of collisions and interference. This not only reduces installation efficiency but also increases the safety risk of accidental impacts. Utility Model Content

[0004] Based on the aforementioned technical problems regarding the traditional split-type support frame requiring multiple workers to coordinate the splicing within the narrow space of the spillway, resulting in limited operating space, easy interference, low installation efficiency, and high safety risks, this utility model proposes an adjustable support frame for spillway excavation.

[0005] This utility model proposes an adjustable support frame for the excavation of spillway tunnels, which includes two support components, each of which includes two positioning plates, a first bracket, and two second brackets.

[0006] The cross-sections of the first support and the two second supports are both I-shaped structures, and the inner walls of the first support are provided with grooves on both sides.

[0007] The ends of the positioning plates are slidably engaged with the inner wall of the second bracket, and the positioning plates are slidably connected to the inner wall of the slide groove. The outer walls of the positioning plates are all fixedly connected with sliders. The outer walls of the first bracket are all provided with multiple sliding holes, and the sliders are slidably connected to the inner walls of the sliding holes.

[0008] Preferably, the end of the first bracket and the end of the two second brackets that are close to each other are fixedly connected with a second connecting ear, and a reserved hole is reserved between the second connecting ear and the first bracket. The end of the positioning plate passes through the reserved hole and is slidably connected to it.

[0009] Preferably, the ends of the first bracket and the two second brackets that are close to each other are fixedly connected with second connecting ears, and the two first connecting ears on the first bracket and the two second connecting ears on the first bracket and the two second connecting ears on the second bracket are fixed together by bolts.

[0010] Preferably, the adjustable support frame further includes multiple support members, each of which has a rotating shaft engaged at both ends. A hinge is fixedly connected to the outer wall of the rotating shaft. The hinges at both ends of the support member located at the upper and lower positions are fixedly connected to the inner wall of the first bracket, and the hinges at both ends of the support member located at the lateral positions are fixedly connected to the second bracket.

[0011] Preferably, the support includes a turntable, and two threaded sleeves are fixedly connected to the inner wall of the turntable, and each threaded sleeve has a screw threadedly connected to its inner wall.

[0012] Preferably, each screw end is fixedly connected to a clamp, and each clamp has a groove on its outer wall, which engages with the rotating shaft.

[0013] Preferably, the outer circumference of the turntable has multiple insertion holes.

[0014] Preferably, the adjustable support frame also includes two jacks, and the ends of the second support are fixedly connected to a base plate, with the two ends of the jacks respectively contacting the base plate.

[0015] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0016] In this device, the first bracket of the upper support is placed in a preset position, and two second brackets are placed at both ends of the first bracket. By sliding the sliders respectively, the positioning plates are moved and the positioning plates at both ends of the first bracket are slid into the second brackets. The first bracket is supported by the two second brackets, which saves manpower used to support the first bracket, reduces the number of installers in narrow spaces, reduces alignment difficulty, shortens splicing time, avoids collision interference when multiple people are operating, improves installation efficiency and reduces safety risks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the support component of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first support of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the positioning plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the second connecting ear of this utility model;

[0022] Figure 6 This is a schematic diagram of the installation structure of the turntable of this utility model;

[0023] Figure 7 This is a schematic diagram of the internal structure of the turntable of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the card head of this utility model.

[0025] In the diagram: 1. Support component; 101. First bracket; 102. Second bracket; 103. Base plate; 104. Sliding hole; 105. Sliding block; 106. Positioning plate; 107. Slide groove; 108. First connecting ear; 109. Second connecting ear; 110. Reserved hole; 2. Jack; 3. Turntable; 4. Insertion hole; 5. Screw sleeve; 6. Screw; 7. Collar; 8. Slot; 9. Rotating shaft; 10. Hinge seat. Detailed Implementation

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1-5 As shown, an adjustable support frame for the excavation of a spillway tunnel includes two support components 1. Each support component 1 includes two positioning plates 106, a first support 101, and two second supports 102.

[0028] The cross-sections of the first support 101 and the two second supports 102 are both I-shaped structures, and the inner walls of the first support 101 are provided with grooves 107 on both sides.

[0029] The ends of the positioning plates 106 are slidably engaged with the inner wall of the second bracket 102, and the positioning plates 106 are slidably connected to the inner wall of the slide groove 107. The outer walls of the positioning plates 106 are all fixedly connected with sliders 105. The outer walls of the first bracket 101 are all provided with multiple sliding holes 104, and the sliders 105 are slidably connected to the inner walls of the sliding holes 104.

[0030] The first bracket 101 of the upper support component 1 is placed in a preset position, and two second brackets 102 are placed at both ends of the first bracket 101. By sliding the sliders 105 respectively, the positioning plates 106 are moved to slide into the second brackets 102. The first bracket 101 is supported by the two second brackets 102, which saves the manpower required to support the first bracket 101, reduces the difficulty of manual alignment, and solves the problem of limited operation of traditional split-type supports in narrow spaces where multiple people work together.

[0031] The I-shaped cross-section structure enhances the deformation resistance of the support frame, ensuring support stability.

[0032] like Figures 1-5 As shown, the end of the first bracket 101 and the end of the two second brackets 102 that are close to each other are fixedly connected with second connecting ears 109. A reserved hole 110 is reserved between the second connecting ears 109 and the first bracket 101. The end of the positioning plate 106 passes through the reserved hole 110 and is slidably connected to it.

[0033] The first bracket 101 and the two second brackets 102 are each fixedly connected to a second connecting ear 109 at their respective ends. The two first connecting ears 108 on the first bracket 101 and the two second brackets 102 are fixed together by bolts. The two second connecting ears 109 on the first bracket 101 and the two second brackets 102 are also fixed together by bolts.

[0034] The first connecting ear 108 and the second connecting ear 109 are fixed by bolts, which improves the connection strength between the first support 101 and the second support 102, prevents the support frame from coming loose when under stress, and adapts to the high-pressure environment of the spillway.

[0035] like Figures 6-8 As shown, the adjustable support frame also includes multiple support members. Both ends of the support members are snapped with rotating shafts 9. The outer wall of the rotating shafts 9 is fixedly connected with hinge seats 10. The hinge seats 10 at both ends of the support members located in the upper and lower positions are fixedly connected to the inner wall of the first bracket 101, and the hinge seats 10 at both ends of the support members located in the side positions are fixedly connected to the second bracket 102.

[0036] The support component includes a turntable 3, and two threaded sleeves 5 are fixedly connected to the inner wall of the turntable 3. Each of the threaded sleeves 5 has a threaded rod 6 connected to its inner wall.

[0037] Each end of the screw 6 is fixedly connected to a clamp 7, and each clamp 7 has a groove 8 on its outer wall, which engages with the rotating shaft 9.

[0038] The turntable 3, the screw sleeve 5, and the screw rod 6 form a telescopic support component. The support length can be adjusted by rotating the turntable, thereby providing strong support for the support component 1.

[0039] The outer wall of the turntable 3 has multiple insertion holes 4.

[0040] like Figure 1 As shown, the adjustable support frame also includes two jacks 2, and the ends of the second support 102 are fixedly connected to the base plate 103, with the two ends of the jacks 2 in contact with the base plate 103 respectively.

[0041] The jack 2 supports the bottom plate 103, providing additional support to the support frame. The support force can be dynamically adjusted according to the pressure in the tunnel, further enhancing the stability of the support and reducing the risk of collapse.

[0042] Working principle: First, place the first bracket 101 of the upper support component 1 in the preset position, and place the two second brackets 102 at both ends of the first bracket 101. By sliding the sliders 105 respectively, the positioning plates 106 are moved, and the positioning plates 106 at both ends of the first bracket 101 are slid into the second brackets 102. The first bracket 101 is supported by the two second brackets 102, saving the manpower required to support the first bracket 101.

[0043] Place the first bracket 101 of the lower support component 1 in the preset position, place the two second brackets 102 at both ends of the first bracket 101, and fix the first connecting ear 108 and the second connecting ear 109 that fit together with each other by bolts.

[0044] If the support range of the support frame needs to be adjusted, the round rod is inserted into the insertion hole 4, and the screw sleeve 5 is rotated by rotating the turntable 3, so that the screw 6 moves spirally along the screw sleeve 5, thereby changing the overall length of the support member, and thus supporting the second support 102 at the upper and lower positions, as well as the first support 101 at the upper and lower positions.

[0045] The slot 8 of the clamp 7 engages with the rotating shaft 9, ensuring a stable connection between the support and the bracket. The jack 2 supports the base plate 103, enhancing the overall load-bearing capacity of the support frame and adapting to the pressure requirements of the spillway tunnel.

[0046] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An adjustable support frame for excavating a spillway tunnel, comprising two support components (1), characterized in that: The support component (1) includes The first support (101) and two second supports (102) have I-shaped cross sections. The inner walls of the first support (101) are provided with grooves (107) on both sides. Two positioning plates (106) are provided. The ends of the positioning plates (106) are slidably engaged with the inner wall of the second bracket (102). The positioning plates (106) are slidably connected to the inner wall of the slide groove (107). The outer wall of each positioning plate (106) is fixedly connected with a slider (105). The outer wall of the first bracket (101) is provided with multiple sliding holes (104). The slider (105) is slidably connected to the inner wall of the sliding hole (104).

2. The adjustable support frame for the excavation of the spillway tunnel as described in claim 1, characterized in that: The first bracket (101) end and the two second brackets (102) are respectively fixedly connected with a second connecting ear (109) at the end of the bracket (101). A reserved hole (110) is reserved between the second connecting ear (109) and the first bracket (101). The end of the positioning plate (106) passes through the reserved hole (110) and is slidably connected to it.

3. The adjustable support frame for the excavation of the spillway tunnel as described in claim 1, characterized in that: The first bracket (101) end and the two second brackets (102) are respectively fixedly connected with a second connecting ear (109) at the end of the first bracket (101) and the two second brackets (102). The two first connecting ears (108) on the first bracket (101) and the two second connecting ears (109) on the first bracket (101) and the two second connecting ears (109) on the second bracket (102) are fixed together by bolts.

4. The adjustable support frame for excavation of spillway tunnel as described in claim 3, characterized in that: It also includes multiple support members, each of which is fitted with a rotating shaft (9) at both ends. The outer wall of the rotating shaft (9) is fixedly connected with a hinge seat (10). The hinge seats (10) at both ends of the support member located at the upper and lower positions are fixedly connected to the inner wall of the first bracket (101), and the hinge seats (10) at both ends of the support member located at the side positions are fixedly connected to the second bracket (102).

5. The adjustable support frame for spillway excavation according to claim 4, characterized in that: The support includes a turntable (3), and two threaded sleeves (5) are fixedly connected to the inner wall of the turntable (3). Each threaded sleeve (5) has a threaded rod (6) connected to its inner wall.

6. The adjustable support frame for spillway excavation according to claim 5, characterized in that: Each end of the screw (6) is fixedly connected to a clamp (7), and the outer wall of the clamp (7) is provided with a groove (8), which is engaged with the rotating shaft (9).

7. The adjustable support frame for spillway excavation according to claim 5, characterized in that: The turntable (3) has multiple insertion holes (4) on its outer circumference.

8. The adjustable support frame for excavation of spillway tunnel as described in claim 1, characterized in that: It also includes two jacks (2), and the ends of the second bracket (102) are fixedly connected to the base plate (103), and the two ends of the jacks (2) are in contact with the base plate (103) respectively.

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