An open-cut tunnel foundation pit support device and its usage method

Abstract

The present invention relates to the technical field of foundation pit support equipment, and particularly relates to an open-cut tunnel foundation pit support device and a using method thereof, including: a support mechanism. There are two groups of support mechanisms in total. Each group of support mechanisms includes a side platform, a sliding plate, support teeth, extension teeth, a moving component, a support component, and an indicating component. The sliding plate is slidably inserted into the side platform. The support teeth are fixedly connected to the top of the sliding plate. The extension teeth are fixedly connected to one end of the support teeth by bolts. In the present invention, during use, according to the actual distance between the opposing row piles, the number of extension teeth is increased or decreased. Then, through the spliced extension teeth, the sleeve frame can be sleeved between the two groups of support mechanisms. Then, by rotating and adjusting the worm, the rotating adjusting worm can cooperate with the adjusting worm wheel to drive the adjusting gear to rotate. The rotating adjusting gear can cooperate with the two extension teeth and the support teeth to squeeze and fit the sliding plate against the inner wall of the corresponding side platform. At this time, under the support of the limiting spring, the limiting block can closely adhere to the inner wall of the corresponding side platform.

Description

Technical Field

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

[0002] In tunnel construction, the open-cut method is used because of its small difficulty, easy quality assurance, short construction period, and low cost. At present, in the construction of underground projects at home and abroad, the open-cut method is mainly applied to the construction of large shallow-buried tunnels and the construction of suburban underground buildings, and has gradually evolved into a construction method combining cover excavation and combined open and cover excavation. Generally speaking, the open-cut method is still the main construction method in tunnel engineering construction.

[0003] However, in the prior art, during the construction process of the open-cut method, row piles are mostly arranged around the foundation pit first to ensure the stability of the soil layer around the foundation pit, and then excavation is carried out section by section downward. As the excavation depth gradually increases, due to the uneven compactness of the soil layer, as the exposed part of the top of the row piles increases, it is then easy to cause the bottom of the remaining row piles to not cooperate well with the support of the remaining soil layer, resulting in the row piles being easily affected by the water resources in the soil layer during the support process, and then tilting, which affects the overall construction. Moreover, the existing support equipment cannot be detected in time when tilting occurs, resulting in poor actual use effects 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 using method thereof that can timely detect the inclination of row piles, and at the same time can timely adjust the support state of row piles, improve the actual support effect, and ensure the actual construction effect.

[0005] The technical solution adopted by the present invention is as follows: An open-cut tunnel foundation pit support device includes: a support mechanism, two groups of the support mechanisms are provided in total, each group of the support mechanisms includes a side platform, a sliding plate, support teeth, extending teeth, a moving component, a support component, and an indicating component. The sliding plate is slidably inserted into the side platform, the support teeth are fixedly connected to the top of the sliding plate, the extending teeth are fixedly connected to one end of the support teeth through bolts, the moving component is arranged on the side platform, the support component is arranged on the side platform, and the indicating component is arranged on the sliding plate; and

[0006] a limiting mechanism, the limiting mechanism includes a sleeve frame and an adjusting gear. The sleeve frame is slidably sleeved between the outer surfaces of two support teeth, and the adjusting gear is rotatably connected to the inner bottom surface of the sleeve frame, and the adjusting gear meshes with both support teeth.

[0007] Among them, each group of the moving components includes an oil cylinder, a moving frame, a crawler wheel and a plurality of side wheels. The oil cylinder is fixedly connected to the top of the corresponding side platform. The output end of the oil cylinder slides through the corresponding side platform. The moving frame is fixedly connected to the output end of the oil cylinder. The crawler wheel is rotatably arranged inside the moving frame. A plurality of the side wheels are rotatably connected to the bottom of the moving frame at equal intervals.

[0008] Among them, each group of the supporting components includes a resisting plate, a resisting block, a resisting rod, a bottom frame and a attaching frame. The resisting plate is fixedly connected to the bottom of the corresponding side platform by bolts. The resisting rod is slidably inserted into the outer surface of one side of the resisting plate. The resisting block is rotatably connected to one end of the resisting rod. The bottom frame is fixedly connected to the bottom of the resisting plate by bolts. The attaching frame is slidably inserted into the inside of the bottom frame.

[0009] Among them, a clamping block is threadedly connected to the outer surface of each of the resisting rods, and the outer surface of one side of the clamping block is in contact with the inner wall of the corresponding resisting plate.

[0010] Among them, a clamping rod is rotatably connected to the inner wall of one side of each of the bottom frames, and each of the clamping rods is threadedly connected to the corresponding attaching frame.

[0011] Among them, a sliding groove is formed in the top of each of the sliding plates, and a sliding rod is fixedly connected to the inside of each of the sliding grooves.

[0012] Among them, each group of the indicating components includes a limiting frame, two limiting rods, a limiting block, a linkage frame, a linkage block, an indicating piece, an inserting block, an inserting rod, a pushing block and two pushing rods. The limiting frame is fixedly connected to the top of the sliding plate. The two limiting rods are fixedly connected to the inside of the limiting frame. The limiting block is slidably sleeved between the outer surfaces of the two limiting rods. The linkage frame is fixedly connected to the outer surface of one side of the limiting block. The linkage block is slidably sleeved on the outer surface of the corresponding sliding rod. The indicating piece is fixedly connected to the top of the linkage block. The inserting block is fixedly connected to the bottom of the sliding plate. The inserting rod is slidably inserted into the inserting block. The pushing block is fixedly connected to one end of the inserting rod. The two pushing rods are rotatably connected to one end of the pushing block.

[0013] Among them, a limiting spring is slidably sleeved on the outer surface of each of the limiting rods. The outer surface of each of the linkage blocks is fixedly connected to one end of the corresponding linkage frame. The other end of each of the inserting rods is fixedly connected to the outer surface of the corresponding linkage block.

[0014] Among them, one end of the adjusting gear is fixedly connected with an adjusting worm gear. The adjusting worm is rotatably connected to the top of the sleeve frame. The adjusting worm is meshed with the adjusting worm gear.

[0015] A using method of an open-cut tunnel foundation pit support device includes the following steps:

[0016] S1. Inclination monitoring: According to the actual distance between adjacent row piles, the number of extended teeth is increased or decreased accordingly. Then, through the spliced extended teeth, the sleeve frame can be sleeved between two support mechanisms. Next, by rotating the adjusting worm, the rotating adjusting worm cooperating with the adjusting worm wheel can drive the adjusting gear to rotate. The rotating adjusting gear can cooperate with two extended teeth and support teeth to squeeze the sliding plate against the inner wall of the corresponding side platform. At this time, under the support of the limiting spring, the limiting block can closely adhere to the inner wall of the corresponding side platform. At this time, the limiting block cooperating with the linkage frame can move the indicating piece to a certain distance from the limiting frame, and record the position of the indicating piece at this time as the initial position. Then, as the foundation pit soil layer is gradually excavated, by increasing or decreasing the spliced abutting plates, the attaching frame can be located at the bottom of the foundation pit at this time. By rotating the clamping rod, one side of the attaching frame can closely adhere to the outer surface of the row pile body. At the same time, the abutting block is sleeved on the outer surface of the row pile support body. At the same time, by rotating the abutting rod, the abutting rod cooperating with the clamping block can support one side of the spliced abutting plate after splicing, ensuring that the abutting plate can adhere to the row pile body and synchronously tilt with the row pile body. Then, as the soil layer is continuously excavated, when the sliding plate is gradually moved downward into the foundation pit by the existing hoisting equipment, the limiting block can adhere to the inner wall of the abutting plate. Then, the limiting block can cooperate with the linkage frame and linkage block to drive the indicating piece to move along the chute direction. Then, by comparing the difference between the indicating piece and the initial position, if the indicating piece is closer to the corresponding side platform than the initial position at this time, the top of the row pile body inclines towards the inside of the foundation pit. If the indicating piece is closer to the sleeve frame than the initial position at this time, the bottom of the row pile body inclines towards the inside of the foundation pit. Then, by observing the position of the indicating piece, the inclination condition of the row pile body can be conveniently detected, and then the support adjustment of the state of the row pile body can be carried out in time;

[0017] S2. Support adjustment: When the top of the row pile body inclines towards the inside of the foundation pit, the sliding plate is moved into the abutting plate closer to the top of the row pile body. When the bottom of the row pile body inclines towards the inside of the foundation pit, the sliding plate is moved into the abutting plate closer to the bottom of the row pile body. Then, by rotating the adjusting worm, the adjusting worm cooperating with the adjusting worm wheel and the adjusting gear can drive the extended teeth to squeeze the support teeth and the sliding plate to squeeze the corresponding position abutting plate, so that the abutting plate cooperating with the abutting rod, abutting block and row pile support body squeezes the corresponding row pile body, and then the corresponding row pile body at the corresponding position can be squeezed and adjusted, facilitating the support adjustment and restoration of the row pile body at the corresponding position. Then, by increasing or decreasing the limiting mechanism and support components, a support effect can be provided between the adjacent row pile bodies.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0019] (1) In the present invention, during use, according to the actual distance between the relative row piles, the number of extension teeth is increased or decreased. Then, through the spliced extension teeth, the sleeve frame can be sleeved between the two support mechanisms. Next, by rotating the adjusting worm, the rotating adjusting worm cooperates with the adjusting worm gear to drive the adjusting gear to rotate. The rotating adjusting gear can cooperate with the two extension teeth and the support teeth to squeeze the slide plate against the inner wall of the corresponding side platform. At this time, under the support of the limiting spring, the limiting block can closely adhere to the inner wall of the corresponding side platform. At this time, the limiting block cooperates with the linkage frame to move the indicating piece to a certain distance from the limiting frame, and record the position of the indicating piece at this time as the initial position. Then, as the pit foundation soil layer is gradually excavated, by increasing or decreasing the spliced abutting plates, the attaching frame can be located at the bottom of the pit foundation at this time. By rotating the clamping rod, one side of the attaching frame can closely adhere to the outer surface of the row pile body. At the same time, through the abutting block sleeved on the outer surface of the row pile support body, and by rotating the abutting rod, the abutting rod cooperates with the clamping block to support one side of the spliced abutting plate after splicing, ensuring that the abutting plate can adhere to the row pile body and synchronously tilt with the row pile body. Then, as the soil layer is continuously excavated, when the slide plate is gradually moved downward into the pit foundation by the existing lifting equipment, the limiting block can adhere to the inner wall of the abutting plate. Thus, the limiting block can cooperate with the linkage frame and the linkage block to drive the indicating piece to move along the direction of the sliding groove. Then, by comparing the difference between the indicating piece and the initial position, if the indicating piece is closer to the corresponding side platform than the initial position at this time, the top end of the row pile body tilts inward into the pit foundation. If the indicating piece is closer to the sleeve frame than the initial position at this time, the bottom end of the row pile body tilts inward into the pit foundation. Then, by observing the position of the indicating piece, the inclination condition of the row pile body can be conveniently detected, and then the support adjustment of the state of the row pile body can be carried out in a timely manner to ensure the safety of the actual construction.

[0020] (2) In the present invention, when the top end of the row pile body tilts inward into the pit foundation, the slide plate is moved into the abutting plate closer to the top end of the row pile body. When the bottom end of the row pile body tilts inward into the pit foundation, the slide plate is moved into the abutting plate closer to the bottom end of the row pile body. Then, by rotating the adjusting worm, the adjusting worm cooperates with the adjusting worm gear and the adjusting gear to drive the extension teeth to squeeze the support teeth and the slide plate to squeeze the corresponding position abutting plate, so that the abutting plate cooperates with the abutting rod, the abutting block and the row pile support body to squeeze the corresponding row pile body, and then the corresponding row pile body at the corresponding position can be squeezed and adjusted, facilitating the support adjustment and restoration of the row pile body at the corresponding position. Then, by increasing or decreasing the limiting mechanism and the support components, an efficient support effect can be provided between the relative row pile bodies to ensure the efficient progress of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional view of the present invention during use;

[0022] Figure 2 is a first perspective three-dimensional view of the present invention;

[0023] Figure 3 It is the second - perspective three - dimensional view of the present invention;

[0024] Figure 4 It is the first - perspective sectional three - dimensional view of the present invention;

[0025] Figure 5 It is the sectional three - dimensional view of the support mechanism of the present invention;

[0026] Figure 6 It is the sectional unfolded three - dimensional view of the support mechanism of the present invention;

[0027] Figure 7 It is of the present invention Figure 6 Enlarged view of part A;

[0028] Figure 8 It is of the present invention Figure 6 Enlarged view of part B;

[0029] Figure 9 It is of the present invention Figure 6 Enlarged view of part C;

[0030] Figure 10 It is of the present invention Figure 6 Enlarged view of part D;

[0031] Figure 11 It is of the present invention Figure 6 Enlarged view of part E;

[0032] Figure 12 It is of the present invention Figure 6 Enlarged view of part F;

[0033] Figure 13 It is the sectional three - dimensional view of the limit mechanism of the present invention.

[0034] Markings in the figure: 1. Support mechanism; 101. Moving frame; 102. Crawler wheel; 103. Side wheel; 104. Oil 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. Linkage frame; 114. Linkage block; 115. Indicator piece; 116. Insert block; 117. Insert rod; 118. Push block; 119. Push rod; 120. Counter - board; 121. Counter - rod; 122. Counter - block; 123. Clamping block; 124. Bottom frame; 125. Clamping rod; 126. Attachment frame; 2. Limit mechanism; 201. Sleeve frame; 202. Adjusting gear; 203. Adjusting worm gear; 204. Adjusting worm; 3. Sheet - pile body; 4. Sheet - pile support body. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0036] Embodiment. Please refer to Figures 1 - 4 , an open-cut tunnel foundation pit support device, which is composed of a support mechanism 1 and a limit mechanism 2.

[0037] Specifically described as follows:

[0038] Please refer to Figures 5 - 12, there are two sets of support mechanisms 1 in total. Each set of support mechanism 1 includes a side platform 105, a sliding plate 106, a support tooth 107, an extension tooth 108, a moving component, a support component, and an indicating component. The sliding plate 106 is slidably inserted into the side platform 105. The support tooth 107 is fixedly connected to the top of the sliding plate 106. The extension tooth 108 is fixedly connected to one end of the support tooth 107 by bolts. The moving component is arranged on the side platform 105, the support component is arranged on the side platform 105, and the indicating component is arranged on the sliding plate 106. Each set of moving components includes an oil cylinder 104, a moving frame 101, a crawler wheel 102, and a plurality of side wheels 103. The oil cylinder 104 is fixedly connected to the top of the corresponding side platform 105. The output end of the oil cylinder 104 slidably penetrates the corresponding side platform 105. The moving frame 101 is fixedly connected to the output end of the oil cylinder 104. The crawler wheel 102 is rotatably arranged inside the moving frame 101. A plurality of side wheels 103 are rotatably connected to the bottom of the moving frame 101 at equal intervals. Each set of support components includes a resisting plate 120, a resisting block 122, a resisting rod 121, a bottom frame 124, and a pasting frame 126. The resisting plate 120 is fixedly connected to the bottom of the corresponding side platform 105 by bolts. The resisting rod 121 is slidably inserted into the outer surface of one side of the resisting plate 120. The resisting block 122 is rotatably connected to one end of the resisting rod 121. The bottom frame 124 is fixedly connected to the bottom of the resisting plate 120 by bolts. The pasting frame 126 is slidably inserted into the bottom frame 124. A clamping block 123 is threadedly connected to the outer surface of each resisting rod 121. The outer surface of one side of the clamping block 123 is in contact with the inner wall of the corresponding resisting plate 120. A clamping rod 125 is rotatably connected to the inner wall of one side of each bottom frame 124. Each clamping rod 125 and the corresponding pasting frame 126 are threadedly connected. A chute is formed on the top of each sliding plate 106. A sliding rod is fixedly connected to the inside of each chute. Each set of indicating components includes a limiting frame 109, two limiting rods 110, a limiting block 112, a linkage frame 113, a linkage block 114, an indicating piece 115, an inserting block 116, an inserting rod 117, a pushing block 118, and two pushing rods 119. The limiting frame 109 is fixedly connected to the top of the sliding plate 106. The two limiting rods 110 are both fixedly connected to the inside of the limiting frame 109. The limiting block 112 is slidably sleeved between the outer surfaces of the two limiting rods 110. The linkage frame 113 is fixedly connected to the outer surface of one side of the limiting block 112. The linkage block 114 is slidably sleeved on the outer surface of the corresponding sliding rod. The indicating piece 115 is fixedly connected to the top of the linkage block 114. The inserting block 116 is fixedly connected to the bottom of the sliding plate 106. The inserting rod 117 is slidably inserted into the inserting block 116. The pushing block 118 is fixedly connected to one end of the inserting rod 117. The two pushing rods 119 are both rotatably connected to one end of the pushing block 118. A limiting spring 111 is slidably sleeved on the outer surface of each limiting rod 110. The outer surface of each linkage block 114 and one end of the corresponding linkage frame 113 are fixedly connected. The other end of each inserting rod 117 and the outer surface of the corresponding linkage block 114 are fixedly connected. Under the support of the limiting spring 111, the limiting block 112 can closely adhere to the inner wall of the corresponding side platform 105.At this time, the limit block 112 and the linkage frame 113 can cooperate to move the indicating piece 115 to a certain distance from the limit frame 109. Record the position of the indicating piece 115 at this time as the initial position. Then, as the pit foundation soil layer is gradually excavated, by increasing or decreasing the splicing abutting plate 120, the attaching frame 126 can be located at the bottom of the pit foundation at this time. By rotating the clamping rod 125, one side of the attaching frame 126 can be closely attached to the outer surface of the row pile body 3. At the same time, the abutting block 122 is sleeved on the outer surface of the row pile support body 4. At the same time, by rotating the abutting rod 121, the abutting rod 121 and the clamping block 123 can cooperate to support one side of the splicing abutting plate 120, ensuring that the abutting plate 120 can be attached to the row pile body 3 and synchronously tilt with the row pile body 3. Then, as the soil layer is continuously excavated, when the sliding plate 106 is gradually moved downward into the pit foundation by the existing hoisting equipment, the limit block 112 can be attached to the inner wall of the abutting plate 120. Then, the limit block 112 can cooperate with the linkage frame 113 and the linkage block 114 to drive the indicating piece 115 to move along the chute direction. 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 than the initial position at this time, the top of the row pile body 3 inclines into the pit foundation. If the indicating piece 115 is closer to the sleeve frame 201 than the initial position at this time, the bottom of the row pile body 3 inclines into the pit foundation. Then, by observing the position of the indicating piece 115, the inclination condition of the row pile body 3 can be conveniently detected. Then, the support adjustment of the state of the row pile body 3 can be carried out in time to ensure the safety of the actual construction. When the top of the row pile body 3 inclines into the pit foundation, then by moving the sliding plate 106 into the inner part of the abutting plate 120 close to the top of the row pile body 3. When the bottom of the row pile body 3 inclines into the pit foundation, move the sliding plate 106 into the inner part of the abutting plate 120 close to the bottom of the row pile body 3. Then, by rotating and adjusting the worm 204, the adjusting worm 204 can cooperate with the adjusting worm gear 203 and the adjusting gear 202 to drive the extending tooth 108 to squeeze the supporting tooth 107 and the sliding plate 106 to squeeze the corresponding position of the abutting plate 120, so that the abutting plate 120 cooperates with the abutting rod 121, the abutting block 122 and the row pile support body 4 to squeeze the corresponding row pile body 3. Then, the corresponding row pile body 3 at the corresponding position can be squeezed and adjusted, facilitating the support adjustment and restoration of the row pile body 3 at the corresponding position. Then, by increasing or decreasing the limit mechanism 2 and the supporting components, an efficient supporting effect can be provided between the opposite row pile bodies 3, ensuring the efficient progress of the construction. Under the support of the moving frame 101, the crawler wheels 102 cooperate with the side wheels 103 to enable the support mechanism 1 to move along the top of the row pile body 3. Then, it is convenient to carry out the support detection and treatment of the row pile body 3 at different positions. By controlling the starting oil cylinder 104, the height of the side platform 105 can be adjusted, so that the side platform 105 can meet the use of the row pile body 3 in different embedded states. Through the insertion rod 117, the push rod 119 and the push block 118 can cooperate to drive the linkage block 114 to move ahead of the limit block 112. Then, the position of the sliding plate 106 can be adjusted in advance, enabling the equipment to better carry out the support adjustment;

[0039] Please refer to Figure 13 Figure 13 , the limit mechanism 2 includes a sleeve frame 201 and an adjusting gear 202. The sleeve frame 201 is slidably sleeved between the outer surfaces of two support teeth 107. The adjusting gear 202 is rotatably connected to the inner bottom surface of the sleeve frame 201. The adjusting gear 202 meshes with both support teeth 107. One end of the adjusting gear 202 is fixedly connected to an adjusting worm gear 203. The top of the sleeve frame 201 is rotatably connected to an adjusting worm 204. The adjusting worm 204 meshes with the adjusting worm gear 203. According to the actual distance between the opposite row piles, the number of extension teeth 108 is increased or decreased. Then, through the spliced extension teeth 108, the sleeve frame 201 can be sleeved between the two support mechanisms 1. By rotating the adjusting worm 204, the rotating adjusting worm 204 can drive the adjusting gear 202 to rotate in cooperation with the adjusting worm gear 203. The rotating adjusting gear 202 can cooperate with the two extension teeth 108 and the support teeth 107 to squeeze and fit the sliding plate 106 against the inner wall of the corresponding side platform 105.

[0040] The following is a detailed description of the usage method of an open-cut tunnel foundation pit support device provided by an embodiment of the present invention. The usage method includes the following steps:

[0041] Step 1. Inclination monitoring: According to the actual distance between adjacent row piles, increase or decrease the number of extension teeth 108. Then, through the spliced extension teeth 108, the sleeve frame 201 can be sleeved between the two support mechanisms 1. Next, rotate the adjusting worm 204, so that the rotating adjusting worm 204 and the adjusting worm gear 203 can drive the adjusting gear 202 to rotate. The rotating adjusting gear 202 can cooperate with the two extension teeth 108 and the support teeth 107 to squeeze and fit the slide plate 106 against the inner wall of the corresponding side platform 105. At this time, supported by the limit spring 111, the limit block 112 can closely adhere to the inner wall of the corresponding side platform 105. At this time, the limit block 112 and the linkage frame 113 can move the indicating piece 115 to a certain distance from the limit frame 109, and record the position of the indicating piece 115 at this time as the initial position. Then, as the foundation pit soil layer is gradually excavated, by increasing or decreasing the spliced abutting plate 120, the attaching frame 126 can be located at the bottom of the foundation pit at this time. By rotating the clamping rod 125, one side of the attaching frame 126 can closely adhere to the outer surface of the row pile body 3. At the same time, the abutting block 122 is sleeved on the outer surface of the row pile support body 4. At the same time, by rotating the abutting rod 121, the abutting rod 121 and the clamping block 123 can support one side of the spliced abutting plate 120 after splicing, ensuring that the abutting plate 120 can adhere to the row pile body 3 and synchronously present an inclined state with the row pile body 3. Then, as the soil layer is continuously excavated, when the slide plate 106 is gradually moved downward into the foundation pit by the existing hoisting equipment, the limit block 112 can adhere to the inner wall of the abutting plate 120. Then, the limit block 112 can cooperate with the linkage frame 113 and the linkage block 114 to drive the indicating piece 115 to move along the chute direction. 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 than the initial position at this time, the top of the row pile body 3 inclines towards the inside of the foundation pit. If the indicating piece 115 is closer to the sleeve frame 201 than the initial position at this time, the bottom of the row pile body 3 inclines towards the inside of the foundation pit. Then, by observing the position of the indicating piece 115, the inclination condition of the row pile body 3 can be conveniently detected, and then the support adjustment of the state of the row pile body 3 can be carried out in time to ensure the safety of the actual construction;

[0042] Step 2. Support adjustment: When the top end of the row pile body 3 inclines towards the inside of the foundation pit, the slide plate 106 is moved into the abutment plate 120 near the top end of the row pile body 3. When the bottom end of the row pile body 3 inclines towards the inside of the foundation pit, the slide plate 106 is moved into the abutment plate 120 near the bottom end of the row pile body 3. Then, by rotating the adjusting worm 204, the adjusting worm 204 cooperates with the adjusting worm gear 203 and the adjusting gear 202 to drive the extending tooth 108 to squeeze the supporting tooth 107 and the slide plate 106 to squeeze the corresponding position of the abutment plate 120, so that the abutment plate 120 cooperates with the abutment rod 121, the abutment block 122 and the row pile support body 4 to squeeze the corresponding row pile body 3, and then the row pile body 3 at the corresponding position can be squeezed and adjusted, which is convenient for the support adjustment and restoration of the row pile body 3 at the corresponding position. Furthermore, by increasing or decreasing the limiting mechanism 2 and the supporting components, an efficient supporting effect can be provided between the relative row pile bodies 3, ensuring the efficient progress of the construction.

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall 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), the adjusting gear (202) and the two supporting teeth (107) being meshed, each group of the supporting components comprising 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) being fixedly connected to the bottom of the corresponding side platform (105) by bolts, the The push rod (121) is slidably inserted into the outer surface of one side of the push plate (120), the push block (122) is rotatably connected to one end of the push rod (121), the base frame (124) is fixedly connected to the bottom of the push plate (120) by bolts, and the sticking frame (126) is slidably inserted into the inside of the base frame (124), and each of the push rods (121) is threadedly connected to a clamping block (123) on the outer surface, and the outer surface of one side of the clamping block (123) is in contact with the inner surface wall of the corresponding push plate (120), and each of the inner surface walls of one side of the base frame (124) is rotatably connected to a clamping rod (125), and each of the clamping rods (125) and the corresponding sticking frame ( 126) are all threadedly connected, each of the slide plates (106) is provided with a slide groove at the top, each of the slide grooves is fixedly connected with a slide rod, each group of the 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 The block (112) is slidably mounted between the outer surfaces 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 mounted 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 mounted inside 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).

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: 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).

4. The open-cut tunnel foundation pit support device according to claim 3, 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).

5. 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 4, 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 slide plate (106) to fit the inner wall of the corresponding side platform (105). At this time, the limit spring ( 111), 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 sheet (115) to a certain distance from the limit frame (109), and the position of the indicator sheet (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, so that the support frame (126) can 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 on the outer surface of the pile row support body (4), and at the same time, by rotating the support rod (121), the support rod (121) cooperates with the clamping block (123) to be spliced ​​to support one side of the support plate (120), 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, 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 ( 114) drives 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) tilts toward the inside of the pit foundation; 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) tilts 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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