Safety protection device for building deep foundation pit

Abstract

The invention discloses a safety protection device for building a deep foundation pit, which comprises a first vertical plate, the bottom end of the side edge, close to the deep foundation pit, of the first vertical plate is hinged to the upper surface of a first fixed bottom plate, a first spring is fixedly arranged in the bottom end of the first vertical plate, and the lower end of the first spring is fixedly connected with the first fixed bottom plate; a first arc-shaped groove is formed in the side face, close to the deep foundation pit, of the first vertical plate. The bottom end, close to the side edge of the deep foundation pit, of the second vertical plate is hinged to the upper surface of the second fixing bottom plate, a second spring is fixedly arranged in the bottom end of the second vertical plate, and the lower end of the second spring is fixedly connected with the second fixing bottom plate; a column body with a circular section is arranged at the top end of the second vertical plate; the bottom end of the third vertical plate is fixedly connected with the upper surface of the third fixed bottom plate; a second arc-shaped groove is formed in the end of the side, away from the deep foundation pit, of the top end of the third fixing bottom plate. The device can quickly and efficiently buffer and decelerate the vehicle and prevent the vehicle from rushing into the deep foundation pit.

Description

Technical Field

[0001] The present invention relates to the field of deep foundation pit protection, and more specifically, to a safety protection device for building deep foundation pits. Background Art

[0002] A deep foundation pit refers to a foundation pit project with an excavation depth of more than 5 meters. During the excavation of a deep foundation pit, it is necessary to set up protective devices around the deep foundation pit or on the outer edge of the road side to avoid falling into the deep foundation pit. At present, most of the protective devices installed on the construction site are ordinary fences, which can only prevent pedestrians from falling into the deep foundation pit, but they have no effect on vehicles that stray into the deep foundation pit, and the protective effect is seriously poor. In the edge protection device of the deep foundation pit with the patent application number 202310889317.4, it is disclosed that after the vehicle hits or impacts the protective vertical plate, the flap is lifted by the driving structure, and the flap is used to push the vehicle back to form a slope, and then the vehicle is assisted to slow down, and the impact force of the vehicle is used to slow down and buffer it, effectively improving the deceleration effect, and preventing the vehicle from rushing into and falling into the deep foundation pit. Although the above patent solves the problem that the deep foundation pit uses ordinary fences and other protective devices for the protection of vehicles. The effect is poor, but under the large impact force of the vehicle, due to the L-shaped protective vertical plate and flap, it may cause certain damage to the vehicle body. Summary of the invention

[0003] The invention provides a safety protection device for a deep foundation pit of a building, which can quickly and efficiently buffer and decelerate a vehicle to prevent the vehicle from rushing into the deep foundation pit.

[0004] In order to achieve these purposes and other advantages of the present invention, the present invention provides a safety protection device for a deep foundation pit of a building, comprising: A fixed bottom plate, which is fixedly arranged on the supporting piles of the deep foundation pit; wherein the fixed bottom plate comprises a first fixed bottom plate, a second fixed bottom plate and a third fixed bottom plate arranged in sequence, and the third fixed bottom plate is close to the deep foundation pit; A first vertical plate, the bottom end of the side close to the deep foundation pit is hinged on the upper surface of the first fixed bottom plate, and a first spring is fixedly arranged inside the bottom end of the first vertical plate, and the lower end of the first spring is fixedly connected to the first fixed bottom plate; wherein a first arc-shaped groove extending along the length direction and having an arc-shaped cross section is arranged on the side of the first vertical plate close to the deep foundation pit; The second vertical plate, the bottom end of the side close to the deep foundation pit is hinged on the upper surface of the second fixed bottom plate, and a second spring is fixedly arranged inside the bottom end of the second vertical plate, and the lower end of the second spring is fixedly connected to the second fixed bottom plate; wherein, a column extending along its length direction and having a circular cross-section is arranged at the top end of the second vertical plate, when the first vertical plate is tilted toward the deep foundation pit direction and contacts with the column, one side arc surface of the column is located in the first arc-shaped groove, and the width of the first arc-shaped groove is greater than the diameter of the column, so that the column can slide along the width direction of the first arc-shaped groove; The third vertical plate has its bottom end fixedly connected to the upper surface of the third fixed bottom plate; wherein, at the top end of the third fixed bottom plate, a second arc-shaped groove extending along its length direction and having an arc-shaped cross-section is provided on the end head on the side away from the deep foundation pit, and the second vertical plate can be tilted so that the other side arc surface of the column is located in the second arc-shaped groove.

[0005] Preferably, the safety protection device for building a deep foundation pit further comprises an elastic blocking component, which is arranged at the end of the first fixed bottom plate away from the deep foundation pit and located on the side of the first vertical plate, and the elastic blocking component specifically comprises: A first elongated groove, which is arranged along the length direction of the first fixed bottom plate; A third spring, which is provided in plurality and is arranged in the first elongated groove at equal intervals, one end of the third spring is fixedly connected to the bottom wall of the first elongated groove and is retracted in the vertical direction; A horizontal plate, which is arranged above the third springs and fixedly connected to the other ends of the plurality of third springs; a first air bag disposed above the horizontal plate; A plurality of pairs of fixing blocks, each pair of fixing blocks is respectively arranged on two opposite side walls of the first elongated groove, each pair of fixing blocks corresponds to one of the third springs, and are respectively located on two sides of the third spring; A plurality of pairs of fixing ropes, each pair of fixing ropes corresponds to a pair of fixing blocks, each fixing rope corresponds to a fixing block, each fixing rope comprises a rope body and a hook arranged at the lower end of the rope body, the upper end of the rope body is fixed on the lower surface of the horizontal plate, wherein when the hook at the lower end of the rope body is hooked on the fixing block, the third spring can be compressed.

[0006] Preferably, the safety protection device for building deep foundation pits further comprises: A first support assembly is disposed between the first vertical plate and the second vertical plate, wherein the first support assembly specifically comprises; A first slideway, which is horizontally arranged between the first fixed bottom plate and the second fixed bottom plate, and the direction of the first slideway is perpendicular to the length direction of the first fixed bottom plate and the second fixed bottom plate; A fourth spring, whose compression direction is the same as that of the first slideway, and one end of the fourth spring is fixedly connected to the side of the second fixed bottom plate away from the deep foundation pit; A first sliding block is slidably disposed in the first slideway, and the other end of the fourth spring is fixedly connected to the first sliding block; A first tilting rod, one end of which is hinged to the side of the first vertical plate close to the deep foundation pit, and the other end of which is hinged to the first sliding block, and when the first vertical plate is tilted, the lower end of the first tilting rod drives the first sliding block to compress the fourth spring; A second support assembly is disposed between the second vertical plate and the third vertical plate, wherein the second support assembly specifically comprises; A second slideway, which is horizontally arranged between the second fixed bottom plate and the third fixed bottom plate, and the direction of the second slideway is perpendicular to the length direction of the second fixed bottom plate and the third fixed bottom plate; a fifth spring, whose compression direction is the same as that of the second slideway, and one end of the fifth spring is fixedly connected to the side of the third fixed bottom plate away from the deep foundation pit; a second sliding block, which is slidably disposed in the second slideway, and the other end of the fifth spring is fixedly connected to the second sliding block; The second tilting rod has one end hinged to the side of the second vertical plate close to the deep foundation pit and the other end hinged to the second slider. When the second vertical plate tilts, the lower end of the second tilting rod drives the second slider to compress the fifth spring.

[0007] Preferably, the safety protection device for building a deep foundation pit further includes a second airbag, which is arranged on the side of the first vertical plate away from the deep foundation pit, wherein the outer surfaces of the first airbag and the second airbag are wavy.

[0008] Preferably, the safety protection device for building a deep foundation pit is provided with a second elongated groove on the upper surface of the first fixed bottom plate, the first vertical plate is arranged in the second elongated groove, a first hinge seat is arranged in the second elongated groove, the first vertical plate is hinged to the first hinge seat at the bottom end of the side close to the deep foundation pit, wherein the second elongated groove is arc-shaped away from the side wall of the deep foundation pit.

[0009] Preferably, the safety protection device for building a deep foundation pit is provided with a third elongated groove on the upper surface of the second fixed bottom plate, the second vertical plate is arranged in the third elongated groove, a second hinged seat is arranged in the third elongated groove, the second vertical plate is hinged to the second hinged seat at the bottom end of the side close to the deep foundation pit, wherein the third elongated groove is arc-shaped away from the side wall of the deep foundation pit.

[0010] Preferably, in the safety protection device for building a deep foundation pit, a first square groove extending along the length direction of the first vertical plate is provided inside the bottom end of the first vertical plate, and a plurality of the first springs are arranged at equal intervals in the first square groove; a second square groove extending along the length direction of the second vertical plate is provided inside the bottom end of the second vertical plate, and a plurality of the second springs are arranged at equal intervals in the first square groove, wherein the height of the first vertical plate is higher than the height of the second vertical plate, the height of the second vertical plate is higher than the height of the third vertical plate, and the length of the second spring is shorter than the length of the first spring.

[0011] Preferably, in the safety protection device for building a deep foundation pit, the length of the first inclined rod is greater than the length of the second inclined rod.

[0012] The present invention has at least the following beneficial effects: First, since the present invention sequentially arranges a first vertical plate, a second vertical plate and a third vertical plate, the first vertical plate and the second vertical plate are respectively connected to the first fixed bottom plate and the second fixed bottom plate in a hinged manner, the third vertical plate is fixed to the third fixed bottom plate, and a first spring is fixedly arranged inside the bottom end of the first vertical plate, and a second spring is fixedly arranged inside the bottom end of the second vertical plate. Therefore, the first vertical plate can lean against the second vertical plate when tilted, and the second vertical plate can lean against the third vertical plate when tilted. The first spring can be stretched to pull back the first vertical plate, and the second spring can be stretched to pull back the second vertical plate, thereby buffering the vehicle. Since the third vertical plate is fixed and has a certain height, it can also prevent the vehicle from crossing the three vertical plates. The present invention slows down the vehicle speed through three-level buffering, which greatly improves the buffering effect.

[0013] Second, the present invention also provides an elastic blocking component, which can further compress the third spring when the wheel of the vehicle presses on the first airbag and the horizontal plate. When the third spring is further compressed, the hook at the lower end of the rope can break away from the fixed block. When the third spring is not restricted by the rope, the compressed spring rebounds and stretches, and the first airbag and the horizontal plate rise, so that the first airbag presses against the bottom of the vehicle, thereby further decelerating the vehicle.

[0014] Third, the present invention further provides a first support assembly and a second support assembly. The first support assembly can not only support the first vertical plate to make it more stable, but also prevent the first vertical plate from tilting when it is about to tilt, thereby further cushioning the vehicle.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side structure of the safety protection device for a deep foundation pit of a building according to the present invention; Figure 2 It is a schematic structural diagram of the safety protection device for a deep foundation pit of a building according to the present invention after being impacted by a vehicle; Figure 3 It is a schematic structural diagram of the elastic stopping component in the safety protection device for building deep foundation pits of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0018] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0019] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0020] like Figure 1~Figure 3 As shown, an embodiment of the present invention provides a safety protection device for a deep foundation pit of a building, comprising: A fixed bottom plate, which is fixedly arranged on the supporting piles of the deep foundation pit; wherein the fixed bottom plate comprises a first fixed bottom plate 1, a second fixed bottom plate 2 and a third fixed bottom plate 3 arranged in sequence, and the third fixed bottom plate 3 is close to the deep foundation pit; The first vertical plate 4, whose bottom end near the side of the deep foundation pit is hinged on the upper surface of the first fixed bottom plate 1, and a first spring 420 is fixedly arranged inside the bottom end of the first vertical plate 4, and the lower end of the first spring 420 is fixedly connected to the first fixed bottom plate 1; wherein, a first arc-shaped groove 410 extending along its length direction and having an arc-shaped cross section is arranged on the side of the first vertical plate 4 near the deep foundation pit; The second vertical plate 5, whose side bottom end close to the deep foundation pit is hinged on the upper surface of the second fixed bottom plate 2, and a second spring 520 is fixedly arranged inside the bottom end of the second vertical plate 5, and the lower end of the second spring 520 is fixedly connected to the second fixed bottom plate 2; wherein, a column 510 extending along its length direction and having a circular cross-section is arranged at the top end of the second vertical plate 5, when the first vertical plate 4 is inclined toward the deep foundation pit direction and contacts the column 510, one side arc surface of the column 510 is located in the first arc groove 410, and the width of the first arc groove 410 is greater than the diameter of the column 510, so that the column 510 can slide along the width direction of the first arc groove 410; The third vertical plate 6 has its bottom end fixedly connected to the upper surface of the third fixed base plate 3; wherein, at the top end of the third fixed base plate 3, a second arc-shaped groove 610 extending along its length direction and having an arc-shaped cross-section is provided on the end head on the side away from the deep foundation pit, and the second vertical plate 5 can be tilted so that the other side arc surface of the column 510 is located in the second arc-shaped groove 610.

[0021] In the above-mentioned embodiment, the height of the three vertical plates and the spacing between the three vertical plates are not specifically limited in this embodiment, and can be specifically limited according to actual conditions. Preferably, the height of the first vertical plate 4 is preferably 1.5 to 2.5 meters, and can also exceed 2.5 meters. The height of the second vertical plate 5 and the third vertical plate 6 is adjusted according to the spacing between them, so that when the first vertical plate 4 is tilted toward the deep foundation pit and contacts the column 510, the arc surface of one side of the column 510 is located in the first arc groove 410, at this time, the arc surface of one side of the column 510 contacts the lower side wall of the first arc groove 410, and the width of the first arc groove 410 is greater than the diameter of the column 510. When the second vertical plate 5 tilts toward the third vertical plate 6, the column 510 can slide along the width direction of the first arc groove 410; when the arc surface of the other side of the column 510 is located in the second arc groove 610, the column 510 contacts the upper side wall of the first arc groove 410. The length of the three vertical plates is greater than or equal to 2.5 meters, so the first vertical plates 4, the second vertical plates 5 and the third vertical plates 6 are spliced ​​in sequence, and the adjacent vertical plates at the corners can be made to have a certain angle, so as to protect the deep foundation pit. Since support piles or other support devices must be set when digging a deep foundation pit, it is best to fix the fixed bottom plate on the support piles by bolts 10 to ensure its stability.

[0022] In the above embodiment, since the first vertical plate 4, the second vertical plate 5 and the third vertical plate 6 are arranged in sequence, the first vertical plate 4 and the second vertical plate 5 are respectively connected to the first fixed bottom plate 1 and the second fixed bottom plate 2 in a hinged manner, the third vertical plate 6 is fixed on the third fixed bottom plate 3, and a first spring 420 is fixedly arranged inside the bottom end of the first vertical plate, and a second spring 520 is fixedly arranged inside the bottom end of the second vertical plate. Therefore, the first vertical plate 4 can be tilted to lean on the second vertical plate 5, and the second vertical plate 5 can be tilted to lean on the third vertical plate 6. The first spring 420 is stretched to pull back the first vertical plate 4, and the second spring 520 is stretched to pull back the second vertical plate 5, thereby buffering the vehicle. Since the third vertical plate 6 is fixed and has a certain height, it can also prevent the vehicle from crossing the three vertical plates. Therefore, the embodiment of the present invention slows down the vehicle speed through three-level buffering, which greatly improves the buffering effect.

[0023] In one specific embodiment, the safety protection device for building a deep foundation pit further includes an elastic blocking component 7, which is arranged at the end of the first fixed bottom plate 1 away from the deep foundation pit and located on the side of the first vertical plate 4. The elastic blocking component 7 specifically includes: A first long strip groove 720, which is arranged along the length direction of the first fixed bottom plate 1; A plurality of third springs 710 are provided and are arranged in the first elongated groove 720 at equal intervals. One end of the third spring 710 is fixedly connected to the bottom wall of the first elongated groove 720 and is retracted in the vertical direction; A horizontal plate 730, which is disposed above the third springs 710 and fixedly connected to the other ends of the plurality of third springs 710; A first air bag 740, which is disposed above the horizontal plate 730; A plurality of pairs of fixing blocks 750, each pair of fixing blocks 750 is respectively disposed on two opposite side walls of the first elongated groove 720, each pair of fixing blocks 750 corresponds to one of the third springs 710, and is respectively located on two sides of the third spring 710; A plurality of pairs of fixing ropes, each pair of fixing ropes corresponds to a pair of fixing blocks 750, each fixing rope corresponds to a fixing block 750, each fixing rope comprises a rope body 760 and a hook 770 arranged at the lower end of the rope body 760, the upper end of the rope body 760 is fixed on the lower surface of the horizontal plate 730, wherein when the hook 770 at the lower end of the rope body 760 is hooked on the fixing block 750, the third spring 710 can be compressed.

[0024] In the above embodiment, when the vehicle rushes onto the first fixed bottom plate 1 and the front of the vehicle impacts the three vertical plates, when the wheels of the vehicle press on the first airbag 740 and the horizontal plate 730, the third spring 710 can be further compressed. When the third spring 710 is further compressed, the upper end of the rope drops, so that the rope changes from a tight state to a loose state. At this time, the hook 770 at the lower end of the rope moves downward under the action of gravity and can be separated from the fixed block 750. A circle of hook grooves 780 is provided on the fixed block 750 to facilitate the hook 770 to hook the fixed block. When the wheel leaves the first airbag 740 and the horizontal plate 730, the third spring 710 is no longer restricted by the rope, and the compressed third spring 710 rebounds and stretches, and the first airbag 740 and the horizontal plate 730 rise, so that the first airbag 740 presses against the bottom of the vehicle. The provision of the first airbag 740 will not cause damage to the bottom of the vehicle, and also increase the friction between the horizontal plate 730 and the bottom of the vehicle, so that the vehicle can be further decelerated. It should be noted that, in the specific setting, when the hook 770 of the rope is hung on the fixed block 750, the third spring 710 must be compressed, and when the third spring 710 resumes its extension, the first airbag 740 and the horizontal plate 730 must be pressed against the bottom of the vehicle. Therefore, the height of the third spring 710 and the thickness of the horizontal plate 730 can be set according to the height from the upper surface of the first fixed bottom plate 1 to the bottom plate of an ordinary vehicle, and no specific limitation is given here.

[0025] In one specific embodiment, the safety protection device for building deep foundation pits further includes: A first support assembly 8 is disposed between the first vertical plate 4 and the second vertical plate 5, wherein the first support assembly 8 specifically comprises; A first slideway 830, which is horizontally arranged between the first fixed bottom plate 1 and the second fixed bottom plate 2, and the direction of the first slideway 830 is perpendicular to the length direction of the first fixed bottom plate 1 and the second fixed bottom plate 2; A fourth spring 840, whose compression direction is the same as that of the first slideway 830, and one end of the fourth spring 840 is fixedly connected to the side of the second fixed base plate 2 away from the deep foundation pit; A first sliding block 820, which is slidably disposed in the first slideway 830, and the other end of the fourth spring 840 is fixedly connected to the first sliding block 820; A first tilting rod 810, one end of which is hinged to the side of the first vertical plate 4 close to the deep foundation pit, and the other end of which is hinged to the first sliding block 820. When the first vertical plate 4 tilts, the lower end of the first tilting rod 810 drives the first sliding block 820 to compress the fourth spring 840; A second support assembly 9, which is disposed between the second vertical plate 5 and the third vertical plate 6, wherein the second support assembly 9 specifically comprises; A second slideway 940, which is horizontally arranged between the second fixed bottom plate 2 and the third fixed bottom plate 3, and the direction of the second slideway 940 is perpendicular to the length direction of the second fixed bottom plate 2 and the third fixed bottom plate 3; A fifth spring 930, whose compression direction is the same as that of the second slideway 940, and one end of the fifth spring 930 is fixedly connected to the side of the third fixed base plate 3 away from the deep foundation pit; A second slider 920, which is slidably disposed in the second slideway 940, and the other end of the fifth spring 930 is fixedly connected to the second slider 920; The second tilting rod 910 has one end hinged to the side of the second vertical plate 5 close to the deep foundation pit, and the other end hinged to the second slider 920. When the second vertical plate 5 tilts, the lower end of the second tilting rod 910 drives the second slider 920 to compress the fifth spring 930.

[0026] The length of the first tilting rod 810 is greater than the length of the second tilting rod 910 .

[0027] In the above embodiment, when there is no vehicle or the like impacting the first vertical plate 4 and the second vertical plate 5, the first inclined plate and the second inclined rod 910 can support the first vertical plate 4 and the second vertical plate 5, and under the action of the first spring 420 and the fourth spring 840, the stability of the first vertical plate 4 is ensured, and under the action of the second spring 520 and the fifth spring 930, the stability of the second vertical plate 5 is ensured. When the vehicle impacts the first vertical plate 4 and the first vertical plate 4 tilts, since both ends of the first inclined rod 810 are hinged, the two ends of the first inclined rod 810 rotate, so that the lower end of the first inclined rod 810 drives the first slider 820 to slide along the slideway to compress the fourth spring 840, but the reverse force of the fourth spring 840 will also prevent the fourth spring 840 from being compressed by the first slider 820, so the setting of the first support assembly 8 can buffer the impact of the vehicle to a certain extent and reduce the speed of the vehicle. The function of the second support assembly 9 is the same as that of the first support assembly 8, which will not be repeated here.

[0028] In one specific embodiment, the safety protection device for building a deep foundation pit further includes a second airbag 13, which is arranged on the side of the first vertical plate 4 away from the deep foundation pit, wherein the outer surfaces of the first airbag 740 and the second airbag 13 are wavy. The second airbag 13 can play a buffering role and also provide a certain degree of protection for the front of the vehicle.

[0029] In one specific embodiment, the safety protection device for building a deep foundation pit is provided with a second elongated groove 110 on the upper surface of the first fixed bottom plate 1, the first vertical plate 4 is arranged in the second elongated groove 110, a first hinge seat 11 is arranged in the second elongated groove 110, the first vertical plate 4 is hinged to the first hinge seat 11 at the bottom end of the side close to the deep foundation pit, wherein the second elongated groove 110 is arc-shaped away from the side wall of the deep foundation pit. A third elongated groove 210 is provided on the upper surface of the second fixed bottom plate 2, the second vertical plate 5 is arranged in the third elongated groove 210, a second hinge seat 12 is arranged in the third elongated groove 210, the second vertical plate 5 is hinged to the second hinge seat 12 at the bottom end of the side close to the deep foundation pit, wherein the third elongated groove 210 is arc-shaped away from the side wall of the deep foundation pit.

[0030] In the above embodiment, the second long strip groove 110 is arc-shaped away from the side wall of the deep foundation pit so that the first vertical plate 4 is not restricted when rotating, and the third long strip groove 210 is arc-shaped away from the side wall of the deep foundation pit so that the second vertical plate 5 is not restricted when rotating. The third vertical plate can be directly fixed to the upper surface of the third fixed bottom plate, or a fourth long strip groove can be provided on the third fixed bottom plate, and the third vertical plate is fixed in the fourth long strip groove.

[0031] In one specific embodiment, the safety protection device for building a deep foundation pit is provided with a first square groove 430 extending along the length direction of the first vertical plate 4 inside the bottom end of the first vertical plate 4, and a plurality of first springs 420 are arranged at equal intervals in the first square groove 430; a second square groove 530 extending along the length direction of the second vertical plate 5 is provided inside the bottom end of the second vertical plate 5, and a plurality of second springs 520 are arranged at equal intervals in the first square groove 430, wherein the height of the first vertical plate 4 is higher than the height of the second vertical plate 5, the height of the second vertical plate 5 is higher than the height of the third vertical plate 6, and the length of the second spring 520 is shorter than the length of the first spring 420.

[0032] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0033] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A safety protection device for a deep foundation pit of a building, characterized in that: include: A fixed bottom plate, which is fixedly arranged on the supporting piles of the deep foundation pit; wherein the fixed bottom plate comprises a first fixed bottom plate, a second fixed bottom plate and a third fixed bottom plate arranged in sequence, and the third fixed bottom plate is close to the deep foundation pit; A first vertical plate, the bottom end of the side close to the deep foundation pit is hinged on the upper surface of the first fixed bottom plate, and a first spring is fixedly arranged inside the bottom end of the first vertical plate, and the lower end of the first spring is fixedly connected to the first fixed bottom plate; wherein a first arc-shaped groove extending along the length direction and having an arc-shaped cross section is arranged on the side of the first vertical plate close to the deep foundation pit; The second vertical plate, the bottom end of the side close to the deep foundation pit is hinged on the upper surface of the second fixed bottom plate, and a second spring is fixedly arranged inside the bottom end of the second vertical plate, and the lower end of the second spring is fixedly connected to the second fixed bottom plate; wherein, a column extending along its length direction and having a circular cross-section is arranged at the top end of the second vertical plate, when the first vertical plate is tilted toward the deep foundation pit direction and contacts with the column, one side arc surface of the column is located in the first arc groove, and the width of the first arc groove is greater than the diameter of the column, so that the column can slide along the width direction of the first arc groove; The third vertical plate has its bottom end fixedly connected to the upper surface of the third fixed bottom plate; wherein, at the top end of the third fixed bottom plate, a second arc-shaped groove extending along its length direction and having an arc-shaped cross-section is provided on the end head on the side away from the deep foundation pit, and the second vertical plate can be tilted so that the other side arc surface of the column is located in the second arc-shaped groove.

2. The safety protection device for building deep foundation pit according to claim 1, characterized in that: It also includes an elastic blocking component, which is arranged at the end of the first fixed bottom plate away from the deep foundation pit and located on the side of the first vertical plate, and the elastic blocking component specifically includes: A first elongated groove, which is arranged along the length direction of the first fixed bottom plate; A third spring, which is provided in plurality and is arranged in the first elongated groove at equal intervals, one end of the third spring is fixedly connected to the bottom wall of the first elongated groove and is retracted in the vertical direction; A horizontal plate, which is arranged above the third springs and fixedly connected to the other ends of the plurality of third springs; a first air bag disposed above the horizontal plate; A plurality of pairs of fixing blocks, each pair of fixing blocks is respectively arranged on two opposite side walls of the first elongated groove, each pair of fixing blocks corresponds to one of the third springs, and are respectively located on two sides of the third spring; A plurality of pairs of fixing ropes, each pair of fixing ropes corresponds to a pair of fixing blocks, each fixing rope corresponds to a fixing block, each fixing rope comprises a rope body and a hook arranged at the lower end of the rope body, the upper end of the rope body is fixed on the lower surface of the horizontal plate, wherein when the hook at the lower end of the rope body is hooked on the fixing block, the third spring can be compressed.

3. The safety protection device for building deep foundation pit according to claim 1, characterized in that: Also includes: A first support assembly is disposed between the first vertical plate and the second vertical plate, wherein the first support assembly specifically comprises; A first slideway, which is horizontally arranged between the first fixed bottom plate and the second fixed bottom plate, and the direction of the first slideway is perpendicular to the length direction of the first fixed bottom plate and the second fixed bottom plate; A fourth spring, whose compression direction is the same as that of the first slideway, and one end of the fourth spring is fixedly connected to the side of the second fixed bottom plate away from the deep foundation pit; A first sliding block is slidably disposed in the first slideway, and the other end of the fourth spring is fixedly connected to the first sliding block; A first tilting rod, one end of which is hinged to the side of the first vertical plate close to the deep foundation pit, and the other end of which is hinged to the first sliding block, and when the first vertical plate is tilted, the lower end of the first tilting rod drives the first sliding block to compress the fourth spring; A second support assembly is disposed between the second vertical plate and the third vertical plate, wherein the second support assembly specifically comprises; A second slideway, which is horizontally arranged between the second fixed bottom plate and the third fixed bottom plate, and the direction of the second slideway is perpendicular to the length direction of the second fixed bottom plate and the third fixed bottom plate; a fifth spring, whose compression direction is the same as that of the second slideway, and one end of the fifth spring is fixedly connected to the side of the third fixed bottom plate away from the deep foundation pit; a second sliding block, which is slidably disposed in the second slideway, and the other end of the fifth spring is fixedly connected to the second sliding block; The second tilting rod has one end hinged to the side of the second vertical plate close to the deep foundation pit and the other end hinged to the second slider. When the second vertical plate tilts, the lower end of the second tilting rod drives the second slider to compress the fifth spring.

4. The safety protection device for building deep foundation pit according to claim 2, characterized in that: It also includes a second airbag, which is arranged on the side of the first vertical plate away from the deep foundation pit, wherein the outer surfaces of the first airbag and the second airbag are wavy.

5. The safety protection device for building deep foundation pit according to claim 1, characterized in that: A second elongated groove is arranged on the upper surface of the first fixed base plate, the first vertical plate is arranged in the second elongated groove, a first hinge seat is arranged in the second elongated groove, the first vertical plate is hinged to the first hinge seat at the bottom end of the side close to the deep foundation pit, wherein the second elongated groove is arc-shaped away from the side wall of the deep foundation pit.

6. The safety protection device for building deep foundation pit according to claim 1, characterized in that: A third elongated groove is arranged on the upper surface of the second fixed base plate, the second vertical plate is arranged in the third elongated groove, a second hinge seat is arranged in the third elongated groove, the second vertical plate is hinged to the second hinge seat at the bottom end of the side close to the deep foundation pit, wherein the third elongated groove is arc-shaped away from the side wall of the deep foundation pit.

7. The safety protection device for building deep foundation pit according to claim 1, characterized in that: A first square groove extending along the length direction of the first vertical plate is arranged inside the bottom end of the first vertical plate, and a plurality of first springs are arranged at equal intervals in the first square groove; a second square groove extending along the length direction of the second vertical plate is arranged inside the bottom end of the second vertical plate, and a plurality of second springs are arranged at equal intervals in the first square groove, wherein the height of the first vertical plate is higher than that of the second vertical plate, the height of the second vertical plate is higher than that of the third vertical plate, and the length of the second spring is shorter than that of the first spring.

8. The safety protection device for building deep foundation pit according to claim 3, characterized in that: The length of the first tilting rod is greater than the length of the second tilting rod.

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