An auxiliary ramp for earthwork construction of a group of foundation pits

Abstract

The present invention discloses an auxiliary ramp for earthwork construction of a foundation pit group, which relates to the field of foundation pit construction and includes: a ramp plate formed by connecting a plurality of connecting plates; a lower support structure including a planar mounting seat and an inner mounting seat; a clamping structure including a horizontal mounting plate connected to the top of the uppermost connecting plate, a clamping seat welded to the bottom of the horizontal mounting plate, and a pre-tightening member for clamping and fixing the clamping seat, the pre-tightening member being embedded in the ground; a support assembly including a plurality of vertical support structures arranged at the bottom of the connecting plates, a horizontal support structure connecting different groups of vertical support structures, and a balance detection structure installed inside the vertical support structures, which solves the problems of poor ramp support and unstable fixation, stabilizes the middle, lower, and upper positions of the ramp plate, enables the vehicle to be stably supported during the process of transporting materials, and is more stable and safe during transportation.

Description

Technical Field

[0001] The present invention relates to an auxiliary device for foundation pit construction, in particular to an auxiliary ramp for earthwork construction of a group of foundation pits. Background Art

[0002] When constructing large buildings, the top-down construction method requires the foundation and underground structure to be constructed after the large-area foundation pit excavation is completed. A foundation pit is an excavation pit dug according to the base elevation and the plane size of the underground structure at the foundation design position or underground structure position. During the earthwork excavation process of the foundation pit and the foundation pit support construction process, it is not only necessary to transport the continuously excavated earthwork out, but also to continuously transport various construction materials in, so as to complete the foundation pit support operation synchronously when the earthwork is completed.

[0003] In the existing foundation pit construction process, the method of directly receiving materials on the foundation pit surface by wheelbarrows has been completely eliminated. Especially at the construction site of a group of foundation pits, a group of foundation pits generally consists of multiple adjacent foundation pits with different plane sizes and excavation depths. Due to the large amount of earthwork excavation in the group of foundation pits, the complex surrounding environment, the interlaced overlap between each foundation pit, and the narrow construction space on site, it is more likely to cause problems in selecting the material receiving position. Therefore, in the existing deep foundation pit projects, it is necessary to adopt the method of building a steel structure ramp and directly extending the built-in ramp to the earth surface of the central island, so that the construction machinery can directly drive from the ground to the inside of the foundation pit through the ramp to transport earthwork and materials, forming a transportation channel between the ground and the inside of the foundation pit.

[0004] However, in the actual application stage, since the middle part of the earthwork project is constructed after the capping beam is built, due to the obstruction of the capping beam, the soil ramp cannot cross the capping beam. And in the case of poor soil layer at the bottom of the foundation pit, it is impossible to directly build a high and steep soil ramp extending from the ground to the central island. Therefore, it is necessary to build a steel structure construction auxiliary structure. Under the condition of its own large weight and large construction load, it poses a great test to the entire ramp. If there is a problem with poor support, it will directly cause the entire ramp to tilt and deform, not only leading to accidents, but even possibly damaging the entire capping beam structure and causing the construction to stagnate. Summary of the Invention

[0005] The present invention provides an auxiliary ramp for earthwork construction of a group of foundation pits, which can effectively solve the above problems.

[0006] The present invention is implemented as follows:

[0007] An auxiliary ramp for earthwork construction of a group of foundation pits, comprising:

[0008] A ramp plate, one end of the ramp plate is installed on the ground, the other end of the ramp plate is installed at the position of the central island inside the foundation pit, and the ramp plate is connected by a plurality of connecting plates;

[0009] A lower support structure, the lower support structure includes a planar mounting seat connected to the bottom of the lowermost connecting plate, and an inner mounting seat locked and fixed to the bottom of the planar mounting seat and inserted into the earthwork of the central island of the foundation pit;

[0010] A clamping structure, the clamping structure includes a horizontal mounting plate connected to the top of the uppermost connecting plate, a clamping seat welded to the bottom of the horizontal mounting plate, and a pre-tightening member for clamping and fixing the clamping seat, and the pre-tightening member is embedded in the ground;

[0011] A support assembly, the support assembly includes a plurality of vertical support structures arranged at the bottom of the connecting plate, a horizontal support structure connected between different groups of vertical support structures, and a balance detection structure connected to the inner side of the vertical support structure.

[0012] As a further improvement, the connecting plates are arranged at intervals and are connected by a connecting frame at the side. The connecting frame includes a threaded column welded to the side of the connecting plate, a connecting piece locked between the two threaded columns, and a reinforcing rib piece welded to the outside of the connecting piece.

[0013] As a further improvement, a buffer structure is arranged in the gap between the connecting plates. The buffer structure includes a guide rail locked to the bottom of the connecting plate, a sliding adaptor plate slidably mounted on the guide rail, a return spring connected between the sliding adaptor plate and the vertical support structure, and an elastic arc frame arranged on the side of the sliding adaptor plate away from the return spring. Both sides of the elastic arc frame are respectively closely attached between two adjacent connecting plates.

[0014] As a further improvement, the planar mounting seat includes a planar plate fitting on the earthwork plane, a fitting cavity arranged at the center of the planar plate and opening upward, and a plurality of outer cavity pipes welded to the bottom of the planar plate. The fitting cavity is mounted on the bottom of the lowermost connecting plate, and the inner mounting seat is inserted into the outer cavity pipe and is matched by a screw.

[0015] As a further improvement, the inner mounting seat includes an inner cavity pipe inserted and fitted into the outer cavity pipe, an inner embedding frame for mounting the inner cavity pipe, a plurality of supporting rods welded to the outside of the inner embedding frame, a mounting shaft threadedly connected to the bottom of the inner embedding frame, and an engaging stud head embedded in the inner side of the inner embedding frame.

[0016] As a further improvement, the inner embedding frame includes a first ring connected to the inner cavity pipe, a positioning ring located inside the first ring, a second ring located outside the first ring, and knife strips for connecting the first ring, the positioning ring, and the second ring. The knife strips are inclined and point to the inside of the foundation pit.

[0017] As a further improvement, the clamping seat includes a vertical plate welded to the bottom of the horizontal mounting plate, and a clamping tube integrally formed at the bottom of the vertical plate. The pre-tightening member includes a split pipe clamp that cooperates with the clamping tube, a stabilizing seat welded to the outside of the split pipe clamp, and an embedded seat welded to the bottom of the stabilizing seat. The split pipe clamp includes a mating pipe cavity for accommodating the clamping tube, and a mating groove opened on the outside of the split pipe clamp for accommodating the vertical plate. The mating pipe cavity communicates with the mating groove.

[0018] As a further improvement, the length of the vertical plate is shorter than that of the split pipe clamp. Threads are provided on both sides of the split pipe clamp. The clamping structure further includes an outer clamping column engaged on the threads. The outer clamping column includes a stud portion engaged with the split pipe clamp, a screw head integrally formed with the stud portion, and a screw groove portion opened on the screw head.

[0019] As a further improvement, the vertical support structure is a number of support rods. The support rods are arranged in pairs at the bottom of the connecting plate. The balance detection structure includes a detector seat body cantilevered below the gap between the connecting plates, a tension rod extending from the detector seat body to the four support rods, a sensor glued to the connection position between the tension rod and the support rod, and a signal transmitter installed inside the detector seat body. The signal transmitter is electrically connected to the sensor, and the sensors are electrically connected to each other.

[0020] As a further improvement, the horizontal support structure includes a transverse connecting rod connected to the lower half of the support rods, and an inclined connecting rod connected to the upper half of the support rods.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention respectively sets three different mounting structures at the lower end position, the upper end position, and the middle position of the ramp plate, so as to stabilize the middle, lower, and upper positions of the ramp plate, enabling the vehicle to be stably supported during the process of transporting materials, and being more stable and safe during transportation. Specifically as follows:

[0023] At the top position of the ramp plate, first, the pre-tightening member is pre-embedded underground in a pre-embedded manner to ensure the stability of the pre-tightening member through the pre-embedded method. Then, the clamping seat is installed at the position of the pre-tightening member, and the horizontal mounting plate is connected and fixed to the connecting plate. Since the horizontal mounting plate is directly welded to the clamping seat, when the horizontal mounting plate is stressed, the force will be distributed to the entire ground. Moreover, on the basis of the above, the horizontal mounting plate itself also needs to be nailed into the ground with steel nails, thereby fixing the connection of the upper end position of the ramp plate more firmly through the protection at both ends.

[0024] At the bottom of the ramp plate, since there is a central island in the center of the foundation pit, the ramp plate is directly connected to the central island. Vehicles need to pass through the central island to go up and down the ramp plate to transport materials back and forth. Therefore, the stability of its bottom directly affects the entire ramp. Thus, the present invention provides a group of inner mounting seats buried deep into the central island. As vehicles pass through the central island, the inner mounting seats with a larger coverage area will be gradually pressed downward, making it more stable. Before use, the flat mounting seat also needs to be connected to the inner mounting seat. Since the flat mounting seat is connected to the lowermost connecting plate, when the lowermost connecting plate is pressed, it will gradually press the flat mounting seat and the inner mounting seat downward. And because the coverage areas of the flat mounting seat and the inner mounting seat gradually increase, it will be more stable and less likely to shake downward, ensuring the stability of the entire ramp bottom.

[0025] Relative to the middle position of the ramp plate, the present invention not only provides a vertical support structure at the bottom of the ramp plate and a horizontal support structure between the vertical support structures, but also provides a balance detection structure between the vertical support structures. The balance detection structure detects the force conditions at various positions on the vertical support structure. Once the phenomenon of unbalanced force appears at two parallel points, it indicates that the ramp has a fault, and construction can be stopped in time for adjustment, which can avoid rollover accidents and damage to the crown beam caused by accidents during transportation, thereby making the foundation pit construction safer.

[0026] The ramp of the present invention is not an integral structure. For the convenience of transportation and installation, it is composed of multiple connecting plates. The connection between the connecting plates will affect the stability when the vehicle is moving. In this regard, the present invention provides a connecting frame between two connecting plates. The connecting frame is mainly connected to the outside of the connecting plates, and two connecting plates are pulled by connecting pieces and reinforcing rib pieces, so that the two connecting plates are kept at a level, making it more unobstructed for the vehicle to drive.

[0027] On the basis of the above, the middle position between two connecting plates is still hollow. In this regard, the present invention provides a buffer structure between two connecting plates, and elastic arc frames are arranged on the inner sides of the two connecting plates. When the two connecting plates are vibrating horizontally under pressure, the vibration force can be dispersed to the elastic arc frames and transmitted downward through the elastic arc frames. At the same time, the elastic arc frames themselves can swing adaptively and can also deform and reset even when affected by external forces.

[0028] During the installation of the lower support structure, first, the inner mounting base needs to be installed. First, the meshing column head is driven into the interior of the central island through drilling equipment to form a fixation, forming a deep and stable structure. Then, the exposed inner cavity tube is mated with the outer cavity tube of the planar mounting base, so that the planar mounting base is firmly installed at the position where the central island is exposed. Finally, the planar mounting base is connected to the lowermost connecting plate to complete the stable installation, achieving deep stabilization of the connecting plate. When the vehicle drives onto the connecting plate, the entire lower support structure is not prone to deviation.

[0029] During the driving-in process of the inner mounting base, due to the relatively cohesive nature of the soil itself, if the inner mounting base is a solid plate-like structure, the difficulty of driving it in is relatively large. Therefore, in the present invention, the inner mounting base is set as a structure of multiple rings, and the connection structure between the multiple rings is set as knife strips. Then, whether during the pressing-in or drilling process, the resistance received by the inner mounting base is relatively small. After the embedding process is completed, the continuously incoming and outgoing vehicles will cause the soil to solidify again, without affecting the stability of the entire central island.

[0030] In the fixing process of the top of the ramp of the present invention, the method of pre-embedding pre-tightening parts is adopted. The pre-tightening parts are buried underground, so that the embedded seat, the stabilizing seat, and the opening and closing pipe clamps in the pre-tightening parts are all located inside the ground. Then, the side-insertion and embedding method is adopted to fix the entire clamping seat and the horizontal mounting plate to the ground in a side-insertion manner. Finally, the horizontal mounting plate is secondarily fixed by nailing, thereby completing the fixation of the top of the ramp. The side-insertion cooperation makes it not easy for the pre-tightening parts and the clamping seat to become detached, and the difficulty of installation and construction does not increase too much.

[0031] However, the cooperation between the cooperation groove of the opening and closing pipe clamp and the vertical plate of the clamping seat still brings certain potential hazards to the stability of the entire clamping structure. In this regard, the present invention also provides outer clamping columns on both sides of the clamping structure, and the entire clamping seat is tightly locked on the pre-tightening parts by means of locking at both ends. Even if the clamping seat is partially deformed after the ramp plate is subjected to excessive pressure, it will not directly affect the cooperation effect between the clamping seat and the pre-tightening parts.

[0032] During the driving process of the vehicle, not only is its own self-weight heavy, but also when fully loaded with earth and stone, the overall weight is even greater. If the driver leans towards one end for a long time during driving or there are too many vehicles driving on the ramp at the same time, it will have a great impact on the entire ramp board. In severe cases, it may even cause the ramp board to tip over. In response to this, the present invention further proposes to connect the sensors of the balance detection structure to the support rods to monitor the information of the four support rods. Since the four sensors are arranged in pairs at the bottom of the connecting plate, with two sensors at both ends of the bottom of one connecting plate, the pressures received by the four support rods can be compared simultaneously. It can not only monitor the pressures continuously received by the two connecting plates, but also compare the pressures received on both sides of the connecting plate, so as to judge whether the force phenomena on both sides of the connecting plate are balanced. Moreover, it can also compare the pressures on the same side of the two connecting plates to analyze the force conditions of the connecting plate under various phenomena, keeping the state of the entire ramp within the controllable range at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0034] Figure 1 FIG. is a schematic structural diagram of an auxiliary ramp for foundation pit group earthwork construction provided by the present invention installed in a foundation pit.

[0035] Figure 2 FIG. is a schematic side view structural diagram of an auxiliary ramp for foundation pit group earthwork construction provided by the present invention.

[0036] Figure 3 FIG. is a schematic structural diagram of a connecting frame and a buffer structure provided by the present invention.

[0037] Figure 4 FIG. is a schematic structural diagram of a lower support structure provided by the present invention.

[0038] Figure 5 FIG. is a schematic top view structural diagram of an inner embedding frame provided by the present invention.

[0039] Figure 6 FIG. is a schematic structural diagram of a clamping structure provided by the present invention.

[0040] Figure 7 FIG. is a schematic structural diagram of a pre-tightening member and an outer clamping column provided by the present invention.

[0041] Figure 8 FIG. is a schematic top view structural diagram of a balance detection structure provided by the present invention. DETAILED DESCRIPTION

[0042] In order to make the embodiments of the present invention, all belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0043] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as referring to the purpose, technical solutions and advantages of the methods. To be clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementations obtained by ordinary technicians in this field without creative work explicitly or implicitly indicate the relative importance or implicitly indicate the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0044] Reference Figures 1 to 8 As shown, an auxiliary ramp for earthwork construction of a foundation pit group includes: a ramp plate 10, one end of the ramp plate 10 is installed on the ground, the other end of the ramp plate 10 is installed at the central island position inside the foundation pit, and the ramp plate 10 is connected by a plurality of connecting plates 11;

[0045] A lower support structure 20, the lower support structure 20 comprises a plane mounting seat 21 connected to the bottom of the lowermost connecting plate 11, and an inner layer mounting seat 22 which is locked and fixed to the bottom of the plane mounting seat 21 and plugged into the earthwork of the central island of the foundation pit;

[0046] A clamping structure 30, the clamping structure 30 comprises a horizontal mounting plate 31 connected to the top of the uppermost connecting plate 11, a clamping seat 32 welded to the bottom of the horizontal mounting plate 31, and a pre-tightening member 33 for clamping and fixing the clamping seat 32, wherein the pre-tightening member 33 is pre-buried in the ground;

[0047] A support assembly 40 includes a plurality of vertical support structures disposed at the bottom of the connecting plate 11, a horizontal support structure 42 connected between different groups of vertical support structures, and a balance detection structure 43 connected to the inner side of the vertical support structure.

[0048] In this embodiment, the ramp plate 10 is made of an alloy plate structure. The ramp plate 10 is connected by a number of connecting plates 11, which can be quickly installed and disassembled, and is widely used in foundation pit groups with different depths and lengths, and can be quickly transferred for use.

[0049] Since the span between the starting point and the ending point of the ramp plate 10 is relatively long, it is necessary to process the front, middle, and rear positions during installation. Therefore, in this embodiment, three different installation structures are respectively provided at the lower end position, the top position, and the middle position of the ramp plate 10, so as to stabilize the middle, lower, and upper positions of the ramp plate 10, enabling the vehicle to receive stable support during the process of transporting materials, and making the transportation more stable and safe. Specifically, as follows:

[0050] At the top position of the ramp plate 10, first, the pre-embedding method is adopted. The pre-tightening part 33 is pre-embedded underground first to ensure the stability of the pre-tightening part 33 through the pre-embedding method. Then, the clamping seat 32 is installed at the position of the pre-tightening part 33, and then the horizontal installation plate 31 is connected and fixed to the connecting plate 11. Since the horizontal installation plate 31 and the clamping seat 32 are directly welded, when the horizontal installation plate 31 is stressed, the force will be distributed to the entire ground. Moreover, on the basis of the above, the horizontal installation plate 31 itself also needs to be nailed into the ground with steel nails, so that the upper fixed position of the ramp plate 10 is connected more firmly through the protection at both ends.

[0051] At the bottom end position of the ramp plate 10, since there is a central island in the center of the foundation pit and the ramp plate 10 is directly connected to the central island, the vehicle needs to pass through the central island to get on and off the ramp plate 10 to transport materials back and forth. Therefore, the stability of its bottom end directly affects the entire ramp. Therefore, the present invention provides a group of inner installation seats 22 buried deep into the central island. As the vehicles on the central island pass by, the inner installation seats 22 with a larger coverage area will be gradually pressed downward, making it more stable. Before use, the flat installation seat 21 also needs to be connected to the inner installation seat 22. Since the flat installation seat 21 is connected to the lowermost connecting plate 11, when the lowermost connecting plate 11 is stressed, it will gradually press the flat installation seat 21 and the inner installation seat 22 downward. And since the coverage range of the flat installation seat 21 and the inner installation seat 22 gradually increases, it will be more stable and not easy to shake as it goes downward, ensuring the stability of the entire ramp bottom.

[0052] Relative to the middle position of the ramp plate 10, the present invention not only provides a vertical support structure at the bottom of the ramp plate 10 and a horizontal support structure 42 between the vertical support structures, but also provides a balance detection structure 43 between the vertical support structures. The balance detection structure 43 detects the force conditions at various positions on the vertical support structure. Once the force is unbalanced at two parallel points, it indicates that the ramp has a fault, and the construction can be stopped in time for adjustment, which can avoid rollover accidents and damage to the crown beam caused by accidents during transportation, thus making the foundation pit construction safer.

[0053] As mentioned above, the ramp plate 10 is a segmented structure, and the ramp is not an integral structure. For the convenience of transportation and installation, it is composed of a plurality of connecting plates 11. The connection between the connecting plates 11 will affect the stability of the vehicle during travel. Therefore, the connecting plates 11 are arranged at intervals, and the sides are connected by a connecting frame 12. The connecting frame 12 includes a threaded post 121 welded to the side of the connecting plate 11, a connecting piece 122 locked between the two threaded posts 121, and a reinforcing rib piece 123 welded to the outside of the connecting piece 122. The connecting frame 12 is mainly connected to the outside of the connecting plate 11. The two connecting plates 11 are pulled by the connecting piece 122 and the reinforcing rib piece 123, so that the two connecting plates 11 are kept at a level, making the vehicle travel more smoothly. And the reinforcing rib piece 123 can stabilize the connecting piece 122, making the connecting piece 122 not easily break.

[0054] The connection between the two connecting plates 11 is not simply a lateral connection. On the basis of the above, the middle position between the two connecting plates 11 is still hollow. For this, a buffer structure 13 is arranged in the gap between the two connecting plates 11. The buffer structure 13 includes a guide rail 131 locked at the bottom of the connecting plate 11, a sliding adaptor plate 132 slidably mounted on the guide rail 131, a return spring 133 connected between the sliding adaptor plate 132 and the vertical support structure, and an elastic arc frame 134 arranged on the side of the sliding adaptor plate 132 away from the return spring 133. The two sides of the elastic arc frame 134 are respectively closely attached between the adjacent two connecting plates 11. The present invention arranges the buffer structure 13 between the two connecting plates 11 and arranges the elastic arc frame 134 on the inner side of the two connecting plates 11. The elastic arc frame 134 has a certain elasticity. When the two connecting plates 11 are vibrating horizontally under pressure, the vibration force can be dispersed to the elastic arc frame 134 and transmitted downward through the elastic arc frame 134. At the same time, the elastic arc frame 134 itself can perform adaptive swaying, and can deform and reset even when affected by external forces.

[0055] Therefore, the bottom of the connecting plate 11 is not only supported by the vertical support structure, but also there are connecting frames 12 and buffer structures 13 between the connecting plates 11. Moreover, the head and tail ends of the connecting plate 11 are fixed to the clamping structure 30 through the lower support structure 20, enabling the entire ramp plate 10 to be continuously and stably supported during use. As an auxiliary equipment for the foundation pit, it can not only achieve rapid transfer, but also quickly form a stable structure after rapid erection, rather than just for show.

[0056] At the lower end of the ramp plate 10 is a central island structure, and the central island is the earthwork piled up. In order to prevent the ramp plate 10 from gradually sinking into the earthwork after installation, it is necessary to increase the contact area between the entire ramp plate 10 and the central island. Therefore, in this case, a lower support structure 20 is installed at the bottom of the ramp plate 10. The lower support structure 20 is divided into a planar mounting base 21 and an inner mounting base 22. The planar mounting base 21 includes a planar plate 211 that fits on the earthwork plane, a mating cavity 212 provided at the center of the planar plate 211 and opening upward, and a plurality of outer cavity tubes 213 welded to the bottom of the planar plate 211. The mating cavity 212 is installed at the bottom of the lowermost connecting plate 11. The inner mounting base 22 is inserted into the outer cavity tubes 213 and is fitted through a screw 214. The inner mounting base 22 includes an inner cavity tube 221 inserted and fitted into the outer cavity tubes 213, an inner embedding frame 222 for mounting the inner cavity tube 221, a plurality of support rods 223 welded to the outer side of the inner embedding frame 222, a mounting shaft 224 threadedly connected to the bottom of the inner embedding frame 222, and an engaging stud head 225 embedded in the inner side of the inner embedding frame 222. During the installation process of the lower support structure 20, first, the inner mounting base 22 needs to be installed. First, the engaging stud head 225 is driven into the interior of the central island through a drilling device until it cannot shake, forming a deep and stable structure. Then, the exposed inner cavity tube 221 is mated with the outer cavity tubes 213 of the planar mounting base 21, so that the planar mounting base 21 is firmly installed at the position where the central island is exposed. Finally, the planar mounting base 21 and the lowermost connecting plate 11 are connected to complete the stable installation, achieving the deep and stable connection of the connecting plate 11, and making it difficult for the entire lower support structure 20 to deviate when the vehicle drives onto the connecting plate 11.

[0057] In the process of driving the inner layer mounting seat 22, due to the relatively dense earthwork itself, if the inner layer mounting seat 22 is a solid plate-shaped structure, it is difficult to drive it in. Therefore, the embedded frame 222 includes a first ring 2221 connected to the inner cavity tube 221, a positioning ring 2222 located on the inner side of the first ring 2221, a second ring 2223 located on the outer side of the first ring 2221, and a knife strip 2224 for connecting the first ring 2221, the positioning ring 2222, and the second ring 2223. The knife strip 2224 is tilted to point to the inside of the foundation pit. In the present invention, the inner layer mounting seat 22 is arranged as a structure of multiple rings. The hollow rings increase the area while reducing the resistance. The connection structure between the multiple rings is the setting of the knife strip 2224. Therefore, whether in the process of pressing in or drilling in, the inner layer mounting seat 22 is subjected to less resistance. After the embedding process is completed, the vehicles that continuously drive back and forth will make the earthwork dense again, which will not affect the stability of the entire center island.

[0058] The top of the ramp plate 10 is a ground foundation, which serves as a connection area between the ramp plate 10 and the ground. A clamping structure 30 is set on the top of the ramp plate 10. The clamping structure 30 includes a clamping seat 32. The clamping seat 32 includes a vertical plate 321 welded to the bottom of the horizontal mounting plate 31, and a clamping tube 322 integrally formed at the bottom of the vertical plate 321. The pre-tightening member 33 includes an opening and closing tube clamp 331 matched with the clamping tube 322, a stabilizing seat 332 welded on the outside of the opening and closing tube clamp 331, and an embedded seat 333 welded at the bottom of the stabilizing seat 332. The opening and closing tube clamp 331 includes a matching tube cavity 3311 for accommodating the clamping tube 322, which is opened on the outside of the opening and closing tube clamp 331 and used for The matching groove 3312 that accommodates the vertical plate 321, and the matching tube cavity 3311 is communicated with the matching groove 3312. During the fixing process at the top of the ramp, the pre-tightening member 33 is first embedded in the ground, so that the embedded seat 333, the stabilizing seat 332, and the opening and closing pipe clamp 331 in the pre-tightening member 33 are all located inside the ground, and then the side-entry embedding method is adopted to fix the entire clamping seat 32 and the horizontal mounting plate 31 on the ground in a side-insertion manner, and finally the horizontal mounting plate 31 is fixed for the second time by nailing, thereby completing the fixation of the top of the ramp. The side-insertion coordination makes it difficult for the pre-tightening member 33 and the clamping seat 32 to fall off, and the difficulty of installation and construction is not increased too much.

[0059] However, the cooperation between the fitting groove 3312 of the opening and closing pipe clamp 331 and the vertical plate 321 of the clamping seat 32 still poses certain potential risks to the stability of the entire clamping structure 30. In response to this, the present invention further proposes that the length of the vertical plate 321 is shorter than that of the opening and closing pipe clamp 331. Threads 3313 are provided on both sides of the opening and closing pipe clamp 331. The clamping structure 30 further includes an outer clamping column 34 engaged with the threads 3313. The outer clamping column 34 includes a stud portion 341 engaged with the opening and closing pipe clamp 331, a screw head portion 342 integrally formed with the stud portion 341, and a screw groove portion 343 formed on the screw head portion 342. Outer clamping columns 34 are also provided on both sides of the clamping structure 30. The entire clamping seat 32 is tightly locked on the pre-tightening member 33 by means of locking at both ends. Even if the clamping seat 32 is partially deformed after the ramp plate 10 is subjected to excessive pressure, it will not directly affect the cooperation effect between the clamping seat 32 and the pre-tightening member 33.

[0060] During the driving process of the vehicle, not only is its own self-weight large, but also when fully loaded with earth and stone, the overall weight is even greater. If the driver leans towards one end for a long time during the driving process or there are too many vehicles driving on the ramp at the same time, it will have a great impact on the entire ramp plate 10. In severe cases, it may even cause the ramp plate 10 to tip over. In response to this, the vertical support structure is a number of support rods 411. The support rods 411 are arranged in groups of two at the bottom of the connecting plate 11 respectively, and the connecting plate 11 is supported in a segmented manner. Moreover, the support rods 411 are arranged near the intervals between the connecting plates 11. In order to determine the supporting performance of the support rods 411, the balance detection structure 43 includes a detector seat body 431 cantilevered below the gap between the connecting plates 11, a tie rod 432 extending from the detector seat body 431 to the four support rods 411, a sensor 433 adhesively bonded to the connection position between the tie rod 432 and the support rod 411, and a signal transmitter 434 installed inside the detector seat body 431. The signal transmitter 434 is electrically connected to the sensor 433, and the sensors 433 are electrically connected to each other. First, the detector seat body 431 is cantilevered to avoid the elastic arc frame 134 and prevent interference between the two. The setting of the tie rod 432 is to stabilize the support rods 411 at different positions to a certain extent, so that there is a certain connection between the support rods 411 and they will not be unable to support alone.

[0061] Secondly, the present invention further proposes to connect the sensor 433 of the balance detection structure 43 to the support rod 411 to monitor the information of the four support rods 411. Since the four support rods are arranged in pairs at the bottom of the connecting plate 11, two support rods are arranged at both ends of the bottom of one connecting plate 11. By comparing the pressures received by the four support rods 411 at the same time, not only can the pressures continuously received by the two connecting plates 11 be monitored, but also the pressures received by both sides of the connecting plate 11 can be compared, so as to judge whether the force phenomena on both sides of the connecting plate 11 are balanced. Moreover, the pressures on the same side of the two connecting plates 11 can be compared to analyze the force conditions of the connecting plate 11 under various phenomena, so that the state of the entire ramp is always within the controllable range.

[0062] In this embodiment, the sensor 433 is a pressure sensor, which can always monitor the state of the support rod 411. For example, when the pressures detected by the two sensors 433 on the same side are different, it may indicate that the height of the previous connecting plate 11 and the subsequent connecting plate 11 is uneven, or the front and rear support rods 411 have become unbalanced. When the pressures detected by the sensors 433 on the same horizontal plane are different, it may indicate that the vehicle has an extremely obvious direction deviation at this time and is extremely close to a certain direction. Then the sensor 433 needs to send a signal to the driver end of the vehicle to timely remind the driver to drive in the middle, so as to avoid the rollover or uneven force phenomenon of the ramp plate 10.

[0063] To ensure the stability of the support rod 411, a horizontal support structure 42 is provided between the support rods 411. The horizontal support structure 42 includes a transverse connecting rod 421 connected to the lower half positions of the support rods 411, and an inclined connecting rod 422 connected to the upper half positions of the support rods 411. Through the two different support methods, the support rod 411 is not prone to skew after installation. It should be emphasized that both the support rod 411 and the horizontal support structure 42 need to avoid the crown beam during the setting process to avoid affecting the original foundation pit structure.

[0064] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An auxiliary ramp for earthwork construction of a foundation pit group, characterized in that, it includes: A ramp plate (10), one end of the ramp plate (10) is installed on the ground, and the other end of the ramp plate (10) is installed at the center island position inside the foundation pit. The ramp plate (10) is connected by a number of connecting plates (11); A lower bracing structure (20), the lower bracing structure (20) includes a planar mounting seat (21) connected to the bottom of the lowermost connecting plate (11), and an inner mounting seat (22) locked and fixed to the bottom of the planar mounting seat (21) and inserted into the earthwork of the foundation pit center island; A clamping structure (30), the clamping structure (30) includes a horizontal mounting plate (31) connected to the top of the uppermost connecting plate (11), a clamping seat (32) welded to the bottom of the horizontal mounting plate (31), and a pre-tightening member (33) for clamping and fixing the clamping seat (32). The pre-tightening member (33) is embedded in the ground; A support assembly (40), the support assembly (40) includes a number of vertical support structures arranged at the bottom of the connecting plate (11), a horizontal support structure (42) connected between different groups of vertical support structures, and a balance detection structure (43) connected to the inner side of the vertical support structure; The planar mounting seat (21) includes a planar plate (211) attached to the earthwork plane, a mating cavity (212) provided at the center of the planar plate (211) and opening upward, and a number of outer cavity tubes (213) welded to the bottom of the planar plate (211). The mating cavity (212) is installed at the bottom of the lowermost connecting plate (11), and the inner mounting seat (22) is inserted into the outer cavity tube (213) and matched by a screw (214); The inner mounting seat (22) includes an inner cavity tube (221) inserted and mated into the outer cavity tube (213), an inner embedding frame (222) for installing the inner cavity tube (221), a number of support rods (223) welded to the outside of the inner embedding frame (222), a mounting shaft (224) threadedly connected to the bottom of the inner embedding frame (222), and a meshing stud head (225) embedded in the inner side of the inner embedding frame (222); The inner embedding frame (222) includes a first ring (2221) connected to the inner cavity tube (221), a positioning ring (2222) located inside the first ring (2221), a second ring (2223) located outside the first ring (2221), and knife strips (2224) for connecting the first ring (2221), positioning ring (2222), and second ring (2223). The knife strips (2224) are inclined towards the inside of the foundation pit.

2. The auxiliary ramp for earthwork construction of a foundation pit group according to claim 1, characterized in that, The connecting plates (11) are arranged at intervals and are connected by a connecting frame (12) on the side. The connecting frame (12) includes a threaded column (121) welded to the side of the connecting plate (11), a connecting piece (122) locked between the two threaded columns (121), and a reinforcing rib piece (123) welded to the outside of the connecting piece (122).

3. A kind of auxiliary ramp for earthwork construction of a foundation pit group according to claim 2 characterized in that A buffer structure (13) is arranged in the gap between the connecting plates (11). The buffer structure (13) includes a guide rail (131) locked to the bottom of the connecting plate (11), a sliding adaptor plate (132) slidably installed on the guide rail (131), a return spring (133) connected between the sliding adaptor plate (132) and the vertical support structure, and an elastic arc frame (134) arranged on the side of the sliding adaptor plate (132) away from the return spring (133). The two sides of the elastic arc frame (134) are respectively closely attached between two adjacent connecting plates (11).

4. A kind of auxiliary ramp for earthwork construction of a foundation pit group according to claim 1 characterized in that The clamping seat (32) includes a vertical plate (321) welded to the bottom of the horizontal mounting plate (31), and a clamping pipe (322) integrally formed at the bottom of the vertical plate (321). The pre-tightening member (33) includes a split pipe clamp (331) cooperating with the clamping pipe (322), a stabilizing seat (332) welded to the outside of the split pipe clamp (331), and an embedded seat (333) welded to the bottom of the stabilizing seat (332). The split pipe clamp (331) includes a mating pipe cavity (3311) for accommodating the clamping pipe (322), and a mating groove (3312) opened on the outside of the split pipe clamp (331) for accommodating the vertical plate (321). The mating pipe cavity (3311) communicates with the mating groove (3312).

5. A kind of auxiliary ramp for earthwork construction of a foundation pit group according to claim 4 characterized in that The length of the vertical plate (321) is shorter than that of the split pipe clamp (331). Threads (3313) are provided on both sides of the split pipe clamp (331). The clamping structure (30) further includes an outer clamping column (34) engaged with the threads (3313). The outer clamping column (34) includes a stud portion (341) engaged with the split pipe clamp (331), a screw head portion (342) integrally formed with the stud portion (341), and a screw groove portion (343) opened on the screw head portion (342).

6. A kind of auxiliary ramp for earthwork construction of a foundation pit group according to claim 1 characterized in that The vertical support structure is a number of support rods (411). The support rods (411) are arranged in groups of two at the bottom of the connecting plate (11). The balance detection structure (43) includes a detector seat body (431) that is cantilevered below the gap between the connecting plate (11) and the connecting plate (11). A tie rod (432) extending from the detector seat body (431) to the four support rods (411), a sensor (433) glued to the connection position between the tie rod (432) and the support rod (411), and a signal transmitter (434) installed inside the detector seat body (431). The signal transmitter (434) is electrically connected to the sensor (433), and the sensors (433) are electrically connected to each other.

7. An auxiliary ramp for earthwork construction of a foundation pit group according to claim 6, characterized in that the horizontal support structure (42) includes a transverse connecting rod (421) connected to the lower half of the support rods (411) and the support rods (411), and an inclined connecting rod (422) connected to the upper half of the support rods (411) and the support rods (411).

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