Open cut tunnel foundation pit supporting device and using method thereof

Abstract

The invention relates to the technical field of foundation pit supporting equipment, in particular to an open-cut tunnel foundation pit supporting device and a using method thereof.The open-cut tunnel foundation pit supporting device comprises two sets of supporting mechanisms, each set of supporting mechanism comprises a side table, a sliding plate, supporting teeth, extending teeth, a moving component, a supporting component and an indicating component, and the sliding plate is slidably inserted into the side table; supporting teeth are fixedly connected to the tops of the sliding plates, and extending teeth are fixedly connected to one ends of the supporting teeth through bolts. During use, the number of the extension teeth is increased or decreased according to the actual distance between the opposite row piles, then the sleeve frame can be arranged between the two supporting mechanisms in a sleeving mode through the spliced extension teeth, and then an adjusting worm is rotated, so that the rotating adjusting worm is matched with an adjusting worm gear to drive an adjusting gear to rotate; the rotating adjusting gear can be matched with the two extending teeth and the supporting teeth to extrude the sliding frame to be attached to the inner wall of the corresponding side table, and at the moment, under supporting of the limiting springs, the limiting blocks can be tightly attached to the inner wall of the corresponding side table.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit supporting equipment, and specifically relates to an open-cut tunnel foundation pit supporting device and a use method thereof. Background Art

[0002] In tunnel construction, open-cut construction is easy, easy to ensure quality, short construction period and low cost. At present, open-cut construction is mainly used in the construction of large shallow buried tunnels and suburban underground buildings in domestic and foreign underground engineering construction, and gradually evolved into a construction method combining cover excavation and open-cut and dark excavation. However, in general, open-cut construction is still the main construction method in tunnel engineering construction.

[0003] However, in the prior art, during the open excavation construction process, piles are usually arranged around the pit foundation first to ensure the stability of the soil layer around the pit foundation, and then excavated downward in sections. As the excavation depth gradually increases, due to the different compactness of the soil layer, as the exposed part of the top of the pile row increases, it is easy for the bottom of the remaining pile row to be unable to better cooperate with the support of the remaining soil layer, resulting in the pile row being easily affected by the water resources in the soil layer during the support process, and then tilting will occur, affecting the overall construction, and the existing support equipment cannot be detected in time when it is tilted, resulting in poor actual use effect of the existing support equipment. Summary of the invention

[0004] The purpose of the present invention is to provide an open-cut tunnel foundation pit support device and a method of using the device, which can timely detect the inclination of a pile row and adjust the support state of the pile row in time, thereby improving the actual support effect and ensuring the actual construction effect.

[0005] The technical solution adopted by the present invention is as follows: an open-cut tunnel foundation pit support device, comprising: a support mechanism, wherein the support mechanism is provided in two groups, each group of the support mechanism comprises a side platform, a slide plate, a support tooth, an extension tooth, a moving component, a support component and an indication component, the slide plate is slidably inserted in the side platform, the support tooth is fixedly connected to the top of the slide plate, the extension tooth is fixedly connected to one end of the support tooth by a bolt, the moving component is arranged on the side platform, the support component is arranged on the side platform, and the indication component is arranged on the slide plate; and The limiting mechanism comprises a sleeve frame and an adjusting gear, wherein the sleeve frame is slidably sleeved between the outer surfaces of the two supporting teeth, the adjusting gear is rotatably connected to the inner bottom surface of the sleeve frame, and the adjusting gear is meshed with the two supporting teeth.

[0006] Among them, each group of the moving parts includes a cylinder, a moving frame, a track wheel and a plurality of side wheels. The cylinder is fixedly connected to the top of the corresponding side platform, the output end of the cylinder slides through the corresponding side platform, the moving frame is fixedly connected to the output end of the cylinder, the track wheel is rotatably arranged inside the moving frame, and the plurality of side wheels are equidistantly rotatably connected to the bottom of the moving frame.

[0007] Among them, each group of the supporting components includes a support plate, a support block, a support rod, a base frame and a support frame. The support plate is fixedly connected to the bottom of the corresponding side platform by bolts, the support rod is slidably inserted in the outer surface of one side of the support plate, the support block is rotatably connected to one end of the support rod, the base frame is fixedly connected to the bottom of the support plate by bolts, and the support frame is slidably inserted in the inside of the base frame.

[0008] Wherein, a clamping block is threadedly connected to the outer surface of each support rod, and the outer surface of one side of the clamping block is in contact with the inner surface wall of the corresponding support plate.

[0009] Wherein, a clamping rod is rotatably connected to the inner surface wall of one side of each base frame, and each clamping rod is threadedly connected to the corresponding frame.

[0010] Wherein, a slide groove is provided on the top of each slide plate, and a slide rod is fixedly connected inside each slide groove.

[0011] Among them, each group of the indicating components includes a limit frame, two limit rods, a limit block, a linkage frame, a linkage block, an indicating piece, an insert block, an insert rod, a push block and two push rods. The limit frame is fixedly connected to the top of the slide, the two limit rods are fixedly connected to the inside of the limit frame, the limit block is slidably sleeved between the outer surfaces of the two limit rods, the linkage frame is fixedly connected to the outer surface of one side of the limit block, the linkage block is slidably sleeved on the outer surface of the corresponding slide rod, the indicating piece is fixedly connected to the top of the linkage block, the insert block is fixedly connected to the bottom of the slide, the insert rod is slidably inserted in the insert block, the push block is fixedly connected to one end of the insert rod, and the two push rods are rotatably connected to one end of the push block.

[0012] Among them, the outer surface of each limit rod is slidably sleeved with a limit spring, the outer surface of each linkage block is fixedly connected to one end of the corresponding linkage frame, and the other end of each insertion rod is fixedly connected to the outer surface of the corresponding linkage block.

[0013] One end of the adjusting gear is fixedly connected to an adjusting worm wheel, the top of the sleeve frame is rotatably connected to an adjusting worm, and the adjusting worm is meshed with the adjusting worm wheel.

[0014] A method for using an open-cut tunnel foundation pit support device comprises the following steps: S1. Inclination monitoring: according to the actual relative distance between the piles, the number of extension teeth is increased or decreased, and then the sleeve frame can be sleeved between the two sets of support mechanisms through the spliced ​​extension teeth, and then the adjusting worm is rotated to make the rotating adjusting worm cooperate with the adjusting worm wheel to drive the adjusting gear to rotate, and the rotating adjusting gear can cooperate with the two extension teeth and the supporting teeth to squeeze the sliding frame to fit the inner wall of the corresponding side platform. At this time, under the support of the limit spring, the limit block can be close to the inner wall of the corresponding side platform. At this time, the limit block cooperates with the linkage frame to move the indicator piece to a certain distance from the limit frame, and the position of the indicator piece at this time is recorded as the initial position. Then, as the pit foundation soil layer is gradually excavated, the spliced ​​abutment plates are increased or decreased to make the frame be located at the bottom of the pit foundation at this time. By rotating the clamping rod, one side of the frame can be closely fitted to the outer surface of the pile row body, and at the same time, the abutment block is sleeved on the pile row support body. The outer surface of the plate is simultaneously supported by rotating the support rod so that the support rod cooperates with the card block to support one side of the support plate after splicing, ensuring that the support plate can fit the pile row body and tilt synchronously with the pile row body. Then, as the soil layer is continuously excavated, the slide plate can be gradually moved to the bottom of the pit foundation through the existing lifting equipment. During this process, the limit block can fit the inner wall of the support plate, so that the limit block can cooperate with the linkage frame and the linkage block to drive the indicator piece to move along the slide groove direction. Then, by comparing the difference between the indicator piece and the initial position, if the indicator piece is closer to the corresponding side platform relative to the initial position at this time, the top of the pile row body tilts toward the inside of the pit foundation. If the indicator piece is closer to the sleeve frame relative to the initial position at this time, the bottom end of the pile row body tilts toward the inside of the pit foundation. Then, by observing the position of the indicator piece, the tilt of the pile row body can be conveniently detected, and the support adjustment of the pile row body state can be carried out in time. S2. Support adjustment: when the top of the pile row body tilts toward the inside of the pit foundation, the slide plate is moved toward the inside of the abutment plate near the top of the pile row body; when the bottom of the pile row body tilts toward the inside of the pit foundation, the slide plate is moved toward the inside of the abutment plate near the bottom of the pile row body, and then the adjusting worm is rotated so that the adjusting worm cooperates with the adjusting worm wheel and the adjusting gear to drive the extending teeth to squeeze the supporting teeth and the slide plate to squeeze the abutment plate at the corresponding position, so that the abutment plate cooperates with the abutment rod, the abutment block and the pile row support body to squeeze the corresponding pile row body, and then the pile row body at the corresponding position can be squeezed and adjusted, so as to facilitate the support adjustment and recovery of the pile row body at the corresponding position, and then the support effect can be provided between the relative pile row bodies by increasing or decreasing the limit mechanism and the supporting components.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In the present invention, when in use, the number of extension teeth is increased or decreased according to the actual relative distance between the pile rows, and then the sleeve frame can be sleeved between the two groups of support mechanisms through the spliced ​​extension teeth, and then the rotating adjustment worm is rotated to make the rotating adjustment worm cooperate with the adjustment worm wheel to drive the adjustment gear to rotate, and the rotating adjustment gear can cooperate with the two extension teeth and the support teeth to squeeze the sliding frame to fit the inner wall of the corresponding side platform. At this time, under the support of the limit spring, the limit block can be closely attached to the inner wall of the corresponding side platform. At this time, the limit block cooperates with the linkage frame to move the indicator piece to a certain distance from the limit frame, and the position of the indicator piece at this time is recorded as the initial position. Then, as the pit foundation soil layer is gradually excavated, the spliced ​​abutment plates are increased or decreased to make the frame be located at the bottom of the pit foundation at this time. By rotating the clamping rod, one side of the frame can be closely attached to the outer surface of the pile row body, and at the same time, the abutment block is sleeved on the outer surface of the pile row support body. At the same time, by rotating the support rod, the support rod and the card block can be used to support one side of the support plate after splicing, ensuring that the support plate can fit the pile row body and tilt synchronously with the pile row body. Then, with the continuous excavation of the soil layer, the slide plate can be gradually moved to the bottom of the pit foundation through the existing lifting equipment. During this process, the limit block can fit the inner wall of the support plate, so that the limit block can cooperate with the linkage frame and the linkage block to drive the indicator piece to move along the slide groove direction, and then by comparing the difference between the indicator piece and the initial position, if the indicator piece is closer to the corresponding side platform relative to the initial position at this time, the top of the pile row body tilts toward the inside of the pit foundation; if the indicator piece is closer to the frame relative to the initial position at this time, the bottom end of the pile row body tilts toward the inside of the pit foundation, and then by observing the position of the indicator piece, the inclination of the pile row body can be conveniently detected, and then the support adjustment of the pile row body state can be carried out in time to ensure the safety of actual construction.

[0016] (2) In the present invention, when the top of the pile row body is inclined toward the inside of the pit foundation, the slide plate is moved toward the inside of the abutment plate near the top of the pile row body. When the bottom of the pile row body is inclined toward the inside of the pit foundation, the slide plate is moved toward the inside of the abutment plate near the bottom of the pile row body. Then, by rotating the adjusting worm, the adjusting worm cooperates with the adjusting worm wheel and the adjusting gear to drive the extending teeth to squeeze the supporting teeth and the slide plate to squeeze the abutment plate at the corresponding position. Then, the abutment plate cooperates with the abutment rod, the abutment block and the pile row support body to squeeze the corresponding pile row body. Then, the pile row body at the corresponding position can be squeezed and adjusted, which is convenient for the support adjustment and recovery of the pile row body at the corresponding position. Then, by increasing or decreasing the limit mechanism and the supporting components, an efficient support effect can be provided between the relative pile row bodies, thereby ensuring efficient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the present invention when in use; Figure 2 It is a first perspective stereogram of the present invention; Figure 3 It is a second viewing angle stereogram of the present invention; Figure 4 It is a cutaway stereogram of the present invention from a first viewing angle; Figure 5 It is a cutaway perspective view of the support mechanism of the present invention; Figure 6 It is a cross-sectional and expanded stereoscopic view of the support mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of part A in the middle; Figure 8 For the present invention Figure 6 Enlarged view of part B; Fig. 9 For the present invention Figure 6 Enlarged view of part C in the middle; Fig.10 For the present invention Figure 6 Enlarged view of part D in the middle; Fig.11 For the present invention Figure 6 Enlarged view of part E in the middle; Fig.12 For the present invention Figure 6 Enlarged view of part F in the middle; Fig.13 It is a sectional stereoscopic view of the limiting mechanism of the present invention.

[0018] Markings in the figure: 1. Support mechanism; 101. Moving frame; 102. Track wheel; 103. Side wheel; 104. Cylinder; 105. Side platform; 106. Slide plate; 107. Support tooth; 108. Extension tooth; 109. Limit frame; 110. Limit rod; 111. Limit spring; 112. Limit block; 113. Linking frame; 114. Linking block; 115. Indicator sheet; 116. Insert block; 117. Insert rod; 118. Push block; 119. Push rod; 120. Abutment plate; 121. Abutment rod; 122. Abutment block; 123. Clamp block; 124. Base frame; 125. Clamp rod; 126. Sticking frame; 2. Limit mechanism; 201. Frame; 202. Adjusting gear; 203. Adjusting worm wheel; 204. Adjusting worm; 3. Pile row body; 4. Pile row support body. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] For example, please refer to Figure 1-Figure 4 , an open-cut tunnel foundation pit supporting device, consisting of a supporting mechanism 1 and a limiting mechanism 2.

[0021] The details are as follows: See also Figure 5-Figure 12, the support mechanism 1 is provided with two groups, each group of the support mechanism 1 includes a side platform 105, a slide plate 106, a support tooth 107, an extension tooth 108, a moving part, a support part and an indication part, the slide plate 106 is slidably inserted into the side platform 105, the support tooth 107 is fixedly connected to the top of the slide plate 106, the extension tooth 108 is fixedly connected to one end of the support tooth 107 by bolts, the moving part is arranged on the side platform 105, the support part is arranged on the side platform 105, and the indication part is arranged on the slide plate 106, each group of moving parts includes a cylinder 104, a moving frame 101, a track wheel 102 and a plurality of side wheels 103, the cylinder 104 is fixedly connected to the top of the corresponding side platform 105, and the output end of the cylinder 104 slides through the corresponding side platform 1 05, the mobile frame 101 is fixedly connected to the output end of the oil cylinder 104, the crawler wheel 102 is rotatably arranged inside the mobile frame 101, and multiple side wheels 103 are equidistantly rotatably connected to the bottom of the mobile frame 101. Each group of supporting components includes a support plate 120, a support block 122, a support rod 121, a base frame 124 and a support frame 126. The support plate 120 is fixedly connected to the bottom of the corresponding side platform 105 by bolts, and the support rod 121 is slidably inserted in the outer surface of one side of the support plate 120. The support block 122 is rotatably connected to one end of the support rod 121. The base frame 124 is fixedly connected to the bottom of the support plate 120 by bolts, and the support frame 126 is slidably inserted in the base frame 124. The outer surface of each support rod 121 is threadedly connected with a block 123, and the outer surface of one side of the block 123 is connected to the corresponding The inner surface wall of the plate 120 should be fitted, and the inner surface wall of one side of each base frame 124 is rotatably connected with a clamping rod 125, each clamping rod 125 and the corresponding sticking frame 126 are threadedly connected, a slide groove is opened on the top of each slide plate 106, and a slide rod is fixedly connected inside each slide groove. Each group of indicating components includes a limit frame 109, two limit rods 110, a limit block 112, a linkage frame 113, a linkage block 114, an indicating piece 115, an insert block 116, an insert rod 117, a push block 118 and two push rods 119. The limit frame 109 is fixedly connected to the top of the slide plate 106, the two limit rods 110 are fixedly connected to the inside of the limit frame 109, the limit block 112 is slidably sleeved between the outer surfaces of the two limit rods 110, and the linkage frame 113 is fixedly connected Connected to the outer surface of one side of the limit block 112, the linkage block 114 is slidably sleeved on the outer surface of the corresponding slide rod, the indicator sheet 115 is fixedly connected to the top of the linkage block 114, the plug block 116 is fixedly connected to the bottom of the slide plate 106, the plug rod 117 is slidably inserted inside the plug block 116, the push block 118 is fixedly connected to one end of the plug rod 117, and the two push rods 119 are rotatably connected to one end of the push block 118. A limit spring 111 is slidably sleeved on the outer surface of each limit rod 110, and the outer surface of each linkage block 114 is fixedly connected to one end of the corresponding linkage frame 113, and the other end of each plug rod 117 is fixedly connected to the outer surface of the corresponding linkage block 114. Under the support of the limit spring 111, the limit block 112 can be close to the inner wall of the corresponding side platform 105.At this time, the limit block 112 cooperates with the linkage frame 113 to move the indicator piece 115 to a certain distance from the limit frame 109, and the position of the indicator piece 115 at this time is recorded as the initial position. Then, as the pit foundation soil layer is gradually excavated, the support frame 126 can be located at the bottom of the pit foundation at this time by adding or reducing the splicing support plate 120. By rotating the clamping rod 125, one side of the support frame 126 can be closely attached to the outer surface of the pile row body 3. At the same time, the support block 122 is sleeved on the outer surface of the pile row support body 4. At the same time, by rotating the support rod 121, the support rod 121 cooperates with the clamping block 123 to support one side of the support plate 120 after splicing, ensuring that the support plate 120 can fit the pile row body 3 and synchronously tilt with the pile row body 3. Then, as the soil layer is continuously excavated, During the process of gradually moving the slide plate 106 to the bottom of the pit foundation by the existing lifting equipment, the limit block 112 can fit the inner wall of the abutment plate 120, so that the limit block 112 can cooperate with the linkage frame 113 and the linkage block 114 to drive the indicator piece 115 to move along the slide groove direction, and then by comparing the difference between the indicator piece 115 and the initial position, if the indicator piece 115 is closer to the corresponding side platform 105 relative to the initial position at this time, the top of the pile row body 3 tilts toward the inside of the pit foundation; if the indicator piece 115 is closer to the sleeve frame 201 relative to the initial position at this time, the bottom end of the pile row body 3 tilts toward the inside of the pit foundation, and then by observing the position of the indicator piece 115, the inclination of the pile row body 3 can be conveniently detected, and then the support adjustment of the pile row body 3 state can be carried out in time to ensure the stability of the pile row body 3. To ensure the safety of actual construction, when the top of the pile row body 3 tilts toward the inside of the pit foundation, the slide plate 106 is moved toward the inside of the abutment plate 120 close to the top of the pile row body 3. When the bottom of the pile row body 3 tilts toward the inside of the pit foundation, the slide plate 106 is moved toward the inside of the abutment plate 120 close to the bottom of the pile row body 3. Then, by rotating the adjusting worm 204, the adjusting worm 204 cooperates with the adjusting worm wheel 203 and the adjusting gear 202 to drive the extending teeth 108 to squeeze the supporting teeth 107 and the slide plate 106 to squeeze the abutment plate 120 at the corresponding position, so that the abutment plate 120 cooperates with the abutment rod 121, the abutment block 122 and the pile row support body 4 to squeeze the corresponding pile row body 3, thereby squeezing and adjusting the pile row body 3 at the corresponding position, so as to facilitate the support of the pile row body 3 at the corresponding position. Adjust and restore, and then by increasing or decreasing the limit mechanism 2 and the supporting components, an efficient support effect can be provided for the relative pile row body 3, ensuring efficient construction. Under the support of the moving frame 101, the track wheel 102 cooperates with the side wheel 103 to enable the supporting mechanism 1 to move along the top of the pile row body 3, thereby facilitating the support detection and processing of the pile row body 3 at different positions. By controlling the start cylinder 104, the height of the side platform 105 can be adjusted, so that the side platform 105 can meet the use of the pile row body 3 in different pre-embedded states. Through the insertion rod 117, the push rod 119 cooperates with the push block 118 to drive the linkage block 114 to move before the limit block 112, so that the position of the slide plate 106 can be adjusted in advance, so that the equipment can better perform support adjustment; See also Fig.13 The limiting mechanism 2 includes a sleeve frame 201 and an adjusting gear 202. The sleeve frame 201 is slidably sleeved between the outer surfaces of the two supporting teeth 107. The adjusting gear 202 is rotatably connected to the inner bottom surface of the sleeve frame 201. The adjusting gear 202 and the two supporting teeth 107 are meshed. One end of the adjusting gear 202 is fixedly connected to an adjusting worm wheel 203. The top of the sleeve frame 201 is rotatably connected to an adjusting worm 204. The adjusting worm 204 and the adjusting worm wheel 203 are meshed. According to the actual distance between the relative pile rows, the number of the extending teeth 108 is increased or decreased, and then the sleeve frame 201 can be sleeved between the two groups of supporting mechanisms 1 through the spliced ​​extending teeth 108. Then, by rotating the adjusting worm 204, the rotating adjusting worm 204 cooperates with the adjusting worm wheel 203 to drive the adjusting gear 202 to rotate. The rotating adjusting gear 202 can cooperate with the two extending teeth 108 and the supporting teeth 107 to squeeze the sliding frame to fit the inner wall of the corresponding side platform 105.

[0022] The following is a detailed description of a method for using an open-cut tunnel foundation pit support device provided by an embodiment of the present invention, and the method for using the device comprises the following steps: Step 1, tilt monitoring: according to the actual distance between the relative pile rows, the number of the extension teeth 108 is increased or decreased, and then the sleeve frame 201 can be sleeved between the two sets of support mechanisms 1 through the spliced ​​extension teeth 108, and then the rotating adjustment worm 204 is made to cooperate with the adjustment worm wheel 203 to drive the adjustment gear 202 to rotate, and the rotating adjustment gear 202 can cooperate with the two extension teeth 108 and the support teeth 107 to squeeze the slide frame to fit the inner wall of the corresponding side platform 105. At this time, under the support of the limit spring 111, the sliding frame 201 is pressed against the inner wall of the corresponding side platform 105. The support is lowered so that the limit block 112 can be closely attached to the inner wall of the corresponding side platform 105. At this time, the limit block 112 cooperates with the linkage frame 113 to move the indicator piece 115 to a certain distance from the limit frame 109, and the position of the indicator piece 115 at this time is recorded as the initial position. Then, as the soil layer of the pit foundation is gradually excavated, the support frame 126 can be located at the bottom of the pit foundation at this time by adding or removing the splicing support plate 120. By rotating the clamping rod 125, one side of the support frame 126 can be closely attached to the outer surface of the pile row body 3. At the same time, the support block 122 is sleeved on the pile row support The outer surface of the main body 4 is rotated at the same time, so that the supporting rod 121 can cooperate with the card block 123 to support one side of the supporting plate 120 after splicing, ensuring that the supporting plate 120 can fit the pile row body 3, and the pile row body 3 is synchronously tilted. Then, as the soil layer is continuously excavated, the slide plate 106 can be gradually moved to the bottom of the pit foundation through the existing lifting equipment. During this process, the limit block 112 can fit the inner wall of the supporting plate 120, so that the limit block 112 can cooperate with the linkage frame 113 and the linkage block 114 to drive the indicator piece 115 along The indicator piece 115 moves in the direction of the slide groove, and then by comparing the difference between the indicator piece 115 and the initial position, if the indicator piece 115 is closer to the corresponding side platform 105 relative to the initial position at this time, the top of the pile row body 3 tilts toward the inside of the pit foundation; if the indicator piece 115 is closer to the sleeve frame 201 relative to the initial position at this time, the bottom of the pile row body 3 tilts toward the inside of the pit foundation, and then by observing the position of the indicator piece 115, the tilting state of the pile row body 3 can be conveniently detected, and then the support adjustment of the state of the pile row body 3 can be carried out in time to ensure the safety of the actual construction; Step 2, support adjustment: when the top of the pile row body 3 is tilted toward the inside of the pit foundation, the slide plate 106 is moved toward the inside of the abutment plate 120 close to the top of the pile row body 3. When the bottom end of the pile row body 3 is tilted toward the inside of the pit foundation, the slide plate 106 is moved toward the inside of the abutment plate 120 close to the bottom end of the pile row body 3. Then, by rotating the adjusting worm 204, the adjusting worm 204 cooperates with the adjusting worm wheel 203 and the adjusting gear 202 to drive the extending teeth 108 to squeeze the supporting teeth 107 and the slide plate 106 to squeeze the abutment plate 120 at the corresponding position, so that the abutment plate 120 cooperates with the abutment rod 121, the abutment block 122 and the pile row support body 4 to squeeze the corresponding pile row body 3, and then the pile row body 3 at the corresponding position can be squeezed and adjusted, which is convenient for the support adjustment and recovery of the pile row body 3 at the corresponding position. Then, by increasing or decreasing the limit mechanism 2 and the supporting components, an efficient support effect can be provided between the relative pile row bodies 3 to ensure efficient construction.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An open-cut tunnel foundation pit support device, characterized in that: include: A support mechanism (1), wherein the support mechanism (1) is provided in two groups, each group of the support mechanism (1) comprises a side platform (105), a slide plate (106), a support tooth (107), an extension tooth (108), a moving component, a support component and an indication component, the slide plate (106) is slidably inserted into the side platform (105), the support tooth (107) is fixedly connected to the top of the slide plate (106), the extension tooth (108) is fixedly connected to one end of the support tooth (107) by a bolt, the moving component is provided on the side platform (105), the support component is provided on the side platform (105), and the indication component is provided on the slide plate (106); and A limiting mechanism (2), the limiting mechanism (2) comprising a sleeve frame (201) and an adjusting gear (202), the sleeve frame (201) being slidably sleeved between the outer surfaces of two supporting teeth (107), the adjusting gear (202) being rotatably connected to the inner bottom surface of the sleeve frame (201), and the adjusting gear (202) and the two supporting teeth (107) being meshed.

2. The open-cut tunnel foundation pit support device according to claim 1, characterized in that: Each group of the moving parts comprises an oil cylinder (104), a moving frame (101), a track wheel (102) and a plurality of side wheels (103); the oil cylinder (104) is fixedly connected to the top of a corresponding side platform (105); the output end of the oil cylinder (104) slides through the corresponding side platform (105); the moving frame (101) is fixedly connected to the output end of the oil cylinder (104); the track wheel (102) is rotatably arranged inside the moving frame (101); and the plurality of side wheels (103) are rotatably connected to the bottom of the moving frame (101) at equal distances.

3. The open-cut tunnel foundation pit support device according to claim 2, characterized in that: Each group of the supporting components comprises a support plate (120), a support block (122), a support rod (121), a bottom frame (124) and a support frame (126); the support plate (120) is fixedly connected to the bottom of the corresponding side platform (105) by bolts; the support rod (121) is slidably inserted into the outer surface of one side of the support plate (120); the support block (122) is rotatably connected to one end of the support rod (121); the bottom frame (124) is fixedly connected to the bottom of the support plate (120) by bolts; and the support frame (126) is slidably inserted into the inside of the bottom frame (124).

4. The open-cut tunnel foundation pit support device according to claim 3, characterized in that: A clamping block (123) is threadedly connected to the outer surface of each of the abutting rods (121), and an outer surface of one side of the clamping block (123) is in contact with the inner wall of the corresponding abutting plate (120).

5. The open-cut tunnel foundation pit support device according to claim 4, characterized in that: A clamping rod (125) is rotatably connected to the inner surface wall of one side of each base frame (124), and each clamping rod (125) is threadedly connected to the corresponding mounting frame (126).

6. The open-cut tunnel foundation pit support device according to claim 5, characterized in that: A slide groove is provided on the top of each slide plate (106), and a slide rod is fixedly connected inside each slide groove.

7. The open-cut tunnel foundation pit support device according to claim 6, characterized in that: Each group of indicating components comprises a limit frame (109), two limit rods (110), a limit block (112), a linkage frame (113), a linkage block (114), an indicating sheet (115), an insert block (116), an insert rod (117), a push block (118) and two push rods (119); the limit frame (109) is fixedly connected to the top of the slide plate (106); the two limit rods (110) are fixedly connected to the inside of the limit frame (109); the limit block (112) is slidably sleeved on the outside of the two limit rods (110). The linkage frame (113) is fixedly connected to the outer surface of one side of the limit block (112), the linkage block (114) is slidably sleeved on the outer surface of the corresponding slide rod, the indicator sheet (115) is fixedly connected to the top of the linkage block (114), the insertion block (116) is fixedly connected to the bottom of the slide plate (106), the insertion rod (117) is slidably inserted into the inside of the insertion block (116), the push block (118) is fixedly connected to one end of the insertion rod (117), and the two push rods (119) are both rotatably connected to one end of the push block (118).

8. The open-cut tunnel foundation pit support device according to claim 7, characterized in that: The outer surface of each limit rod (110) is slidably sleeved with a limit spring (111), the outer surface of each linkage block (114) is fixedly connected to one end of the corresponding linkage frame (113), and the other end of each insertion rod (117) is fixedly connected to the outer surface of the corresponding linkage block (114).

9. The open-cut tunnel foundation pit support device according to claim 8, characterized in that: One end of the adjusting gear (202) is fixedly connected to an adjusting worm wheel (203), and the top of the sleeve frame (201) is rotatably connected to an adjusting worm (204), and the adjusting worm (204) is meshed with the adjusting worm wheel (203).

10. A method for using an open-cut tunnel foundation pit support device, characterized in that: The device is applied to an open-cut tunnel foundation pit support device as described in claim 9, comprising the following steps: S1. Tilt monitoring: according to the actual distance between the relative pile rows, the number of the extension teeth (108) is increased or decreased, and then the sleeve frame (201) can be sleeved between the two sets of support mechanisms (1) through the spliced ​​extension teeth (108). Then, by rotating the adjustment worm (204), the rotating adjustment worm (204) cooperates with the adjustment worm wheel (203) to drive the adjustment gear (202) to rotate. The rotating adjustment gear (202) can cooperate with the two extension teeth (108) and the support teeth (107) to press the sliding frame to fit the inner wall of the corresponding side platform (105). At this time, the limit spring (111) Under the support of the side platform (105), the limit block (112) can be closely attached to the inner wall of the corresponding side platform (105). At this time, the limit block (112) cooperates with the linkage frame (113) to move the indicator piece (115) to a certain distance from the limit frame (109), and the position of the indicator piece (115) at this time is recorded as the initial position. Then, as the soil layer of the pit foundation is gradually excavated, the support plate (120) is added or removed to enable the support frame (126) to be located at the bottom of the pit foundation at this time. By rotating the clamping rod (125), one side of the support frame (126) can be closely attached to the outer surface of the pile row body (3). At the same time, the support block (122) is sleeved The support plate (120) is provided on the outer surface of the pile row support body (4), and the support rod (121) is rotated so that the support rod (121) can cooperate with the clamping block (123) to support one side of the support plate (120) after splicing, so as to ensure that the support plate (120) can fit the pile row body (3) and synchronously tilt with the pile row body (3). Then, as the soil layer is continuously excavated, the slide plate (106) can be gradually moved to the bottom of the pit foundation through the existing lifting equipment. During this process, the limit block (112) can fit the inner wall of the support plate (120), so that the limit block (112) can cooperate with the linkage frame (113) and the linkage block (113). 14) driving the indicating piece (115) to move along the direction of the slide groove, and then by comparing the difference between the indicating piece (115) and the initial position, if the indicating piece (115) is closer to the corresponding side platform (105) relative to the initial position, the top end of the pile row body (3) is tilted toward the inside of the pit foundation, and if the indicating piece (115) is closer to the sleeve frame (201) relative to the initial position, the bottom end of the pile row body (3) is tilted toward the inside of the pit foundation, and then by observing the position of the indicating piece (115), the tilting condition of the pile row body (3) can be conveniently detected, and then the support adjustment of the state of the pile row body (3) can be carried out in time; S2. Support adjustment: When the top of the pile row body (3) tilts toward the inside of the pit foundation, the slide plate (106) is moved toward the inside of the abutment plate (120) near the top of the pile row body (3); when the bottom of the pile row body (3) tilts toward the inside of the pit foundation, the slide plate (106) is moved toward the inside of the abutment plate (120) near the bottom of the pile row body (3), and the adjusting worm (204) is rotated so that the adjusting worm (204) cooperates with the adjusting worm wheel (203) and the adjusting gear (202) to drive the extension The extended teeth (108) squeeze the supporting teeth (107) and the slide plate (106) squeeze the corresponding position push plate (120), so that the push plate (120) cooperates with the push rod (121), the push block (122) and the pile row support body (4) to squeeze the corresponding pile row body (3), thereby being able to squeeze and adjust the pile row body (3) at the corresponding position, facilitating the support adjustment and recovery of the pile row body (3) at the corresponding position, and thereby providing a support effect between the relative pile row bodies (3) by increasing or decreasing the limit mechanism (2) and the support component.

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