Supporting device for foundation pit engineering

Abstract

The utility model discloses a supporting device for foundation pit engineering, which comprises a bottom groove, first supporting rods are symmetrically arranged on two outer sides of the bottom groove, a guide frame is assembled in the bottom groove, an adjusting plate is attached to the guide frame, and the adjusting plate is linked with a threaded sleeve which is arranged in the guide frame and ascends and descends along the guide frame; second supporting rods are arranged on the two sides of the adjusting plate, the ends of the first supporting rods and the ends of the second supporting rods are hinged to side supporting plates, sliding rails are arranged on the outer sides of the side supporting plates, sliding grooves are slidably connected to the outer sides of the sliding rails, and base plates for driving the fixing cones are arranged on the outer sides of the sliding grooves. The first supporting rods form a parallelogram and are matched with the second supporting rods to form a trapezoid, so that the problem that the side supporting plates incline and shake is effectively solved, the base plate and the side face of the supporting foundation pit form positioning through the fixing cones, the base plate is effectively prevented from moving downwards in the operation process, and the problem that supporting points slide downwards is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of support in foundation pit construction, in particular to a support device used for foundation pit engineering. Background Art

[0002] The foundation pit is an earth pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Before excavation, the excavation plan should be determined based on geological and hydrological data and the conditions of nearby buildings on site, and waterproofing and drainage work should be done well. If the excavation is not deep, the side slope can be used to make the earth slope stable. The slope size is determined according to relevant construction regulations. If the excavation is deeper and there are buildings nearby, the foundation pit wall support method and shotcrete wall protection method can be used. Large foundation pits can even use underground continuous walls and column-type bored pile interlocking methods to prevent the outer soil layer from collapsing. If there is no impact on nearby buildings, the well point method can be used to lower the groundwater level and slope open excavation can be adopted. In cold areas, natural cold air freezing method can be used for excavation, etc. At the same time, in order to prevent the collapse of the side walls of the foundation pit, foundation pit support devices are usually used to support the walls.

[0003] In the publication (announcement) number: CN217896525U, the publication (announcement) date: 2022-11-25, a support device for an underground foundation pit of a construction project is proposed in the prior art, including a base and a side support plate, the mounting plate is vertically mounted in the middle position of the top of the base, a screw is arranged at the top of the mounting plate, the bottom end of the screw is movably connected to the top surface of the base, the outer surface of the screw is spirally connected with a threaded sleeve, the surface of the threaded sleeve is symmetrically provided with a second mounting seat, the top surface of the base is located on both sides of the mounting plate and the first mounting seat is installed, and a stepping motor is arranged at one end of the screw. The utility model is convenient for simultaneously supporting both sides of the foundation pit by setting a side support plate, a first mounting seat, a second mounting seat, a third mounting seat, a fourth mounting seat, a first support rod, a second support rod, a screw and a threaded sleeve. This method is simple to operate, and is convenient for adjusting the distance between the two side support plates according to the width of the foundation pit, and is convenient for simultaneously supporting the pit walls on both sides of the foundation pit, thereby improving its support effect.

[0004] However, in the above-mentioned prior art, the side support plate is directly connected by the first support rod and the second support rod, which causes the side support plate to have the problem of deflection and shaking. At the same time, when supporting, the side support plate will move downward and expand outward for support, resulting in displacement of the support position and the initial position. Therefore, a support device for foundation pit engineering is proposed to optimize the above-mentioned prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a supporting device for foundation pit engineering to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A supporting device for foundation pit engineering, comprising:

[0008] Bottom trough,

[0009] The first support rods are symmetrically arranged on both outer sides of the bottom groove, and a guide frame is installed in the bottom groove, an adjustment plate is attached to the guide frame, and the adjustment plate is linked with a threaded sleeve in the guide frame that is lifted and lowered along the guide frame;

[0010] A second support rod is provided on both sides of the adjustment plate, the ends of the first support rod and the second support rod are hinged to the side support plate, a slide rail is provided on the outer side of the side support plate, a slide groove is slidably connected to the outer side of the slide rail, and a pad for driving the fixed cone is provided on the outer side of the slide groove.

[0011] Furthermore, the guide frame is an inverted U-shaped frame fixed on the bottom groove and forming an enclosure cavity, and a threaded rod fixed in the bottom groove and located in the middle of the inverted U-shaped frame is threadedly connected to a threaded sleeve integrally formed on the adjustment plate.

[0012] Furthermore, the guide frame forms an assembly cavity at the top of the threaded rod, and a driving mechanism for driving the threaded rod to rotate to drive the lifting threaded sleeve is arranged in the assembly cavity, and a motor for driving the driving mechanism to move is fixed on the outside of the guide frame.

[0013] Furthermore, the driving mechanism is a worm gear assembly, the threaded rod is arranged cocentrically with the worm wheel in the worm gear, and the worm wheel is externally driven and meshed with the worm.

[0014] Furthermore, a bearing portion is formed above the inverted U-shaped frame, and the motor for driving the worm to rotate is fixedly disposed on the bearing portion.

[0015] Furthermore, two guide rods fixed in the bottom groove are symmetrically arranged in the enclosure cavity, and the adjustment plate is slidably connected to the two guide rods.

[0016] Furthermore, both outer sides of the bottom groove extend to form an assembly portion, and the assembly portion on each side is provided with at least two first support rods parallel to each other.

[0017] Furthermore, a locking bolt is provided on the side support plate, and the locking bolt passes through the slide rail and is tightly pressed against the slide groove.

[0018] Furthermore, a fixing bolt passes through the end of the slide groove, and a fixing screw hole matching the fixing bolt is provided on the backing plate.

[0019] Furthermore, the bottom groove forms an assembly groove, and the assembly groove has a height of at least 50 mm.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model can drive the adjustment plate to slide up and down along the guide rod through the threaded rod and the threaded sleeve, so that the side support plate is expanded outward through the cooperation of the first support rod and the second support rod. The plurality of first support rods form a parallelogram and cooperate with the second support rod to form a trapezoid, thereby effectively avoiding the problem of the side support plate tilting and shaking. The pad is positioned with the side of the supporting foundation pit through the fixed cone. Through the setting of the slide rail and the slide groove, the pad and the side support plate form a sliding connection relationship, thereby effectively avoiding the pad downward displacement during operation and avoiding the problem of the support point sliding down.

[0022] 2. The utility model drives the worm to rotate through a motor, and the worm drives the threaded rod to rotate through a worm wheel, thereby forming a self-locking effect.

[0023] 3. The utility model can lock the positional relationship between the slide groove and the slide rail after support by setting the locking bolt, so that the side support plate and the pad are fixed.

[0024] 4. The utility model can limit the movement on both sides of the slide groove by setting the fixing bolts to prevent the slide groove and the slide rail from slipping.

[0025] 5. The utility model can replace the pad by disassembling the fixing bolts and the pad, so that pads of different sizes can be replaced to meet different support requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0027] Figure 1 The utility model is a structural schematic diagram of a supporting device for foundation pit engineering provided by the utility model.

[0028] Figure 2 This is an assembly diagram of the slide rail, slide groove and locking bolt provided by the utility model.

[0029] Figure 3 This is a structural schematic diagram of the adjustment plate provided by the utility model.

[0030] Figure 4 The utility model is provided with a worm gear and a worm gear assembly diagram on a guide frame.

[0031] In the figure: 1. bottom groove; 2. inverted guide frame; 3. guide rod; 4. adjustment plate; 5. threaded rod; 6. threaded sleeve; 7. first support rod; 8. second support rod; 9. side support plate; 10. slide rail; 11. slide groove; 12. pad; 13. fixing cone; 14. worm gear; 15. worm; 16. motor; 17. locking bolt; 18. fixing bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-4 As described, see Figure 1-4 In an embodiment of the utility model, a support device for foundation pit engineering includes a bottom groove 1, an inverted U-shaped frame 2 is fixedly connected inside the bottom groove 1, and a retaining cavity is formed on the lower side thereof, and two guide rods 3 are symmetrically and parallelly fixedly connected to the inner side of the inverted U-shaped frame 2, and the bottom ends of the guide rods 3 are fixedly connected to the bottom groove 1. At this time, the two guide rods 3 can be protected through the retaining cavity to reduce the influence of the outside world. An adjustment plate 4 is slidably connected to the guide rods 3, and a lifting lug is symmetrically fixedly connected to the adjustment plate 4. The device can be lifted and placed by a lifting device. A through hole is provided on the adjustment plate 4 for the guide rod 3 to pass through and slide. Both sides of the adjustment plate 4 slide in contact with the inner wall of the inverted U-shaped frame 2, and a threaded rod 5 is rotatably connected between the middle part of the inverted U-shaped frame 2 and the bottom groove 1. The outer side of the threaded rod 5 is threadedly connected to a threaded sleeve 6 that matches it. In this embodiment, the threaded sleeve 6 can also be integrally arranged on the adjustment plate 4, and the threaded sleeve 6 is fixedly penetrated. Through the adjusting plate 4, four first support rods 7 are symmetrically hinged on both sides of the inverted U-shaped frame 2 in parallel, two second support rods 8 are symmetrically hinged on both sides of the adjusting plate 4, the second support rods 8 and the first support rods 7 are arranged in an "eight" shape, and the ends of the first support rods 7 and the second support rods 8 are jointly hinged with a side support plate 9, and a slide rail 10 is fixedly connected to the side support plate 9 at an equal distance, and a slide groove 11 adapted thereto is slidably connected to the outer side of the slide rail 10, and a pad 12 is commonly provided on the outer side of the corresponding slide groove 11, and a fixed cone 13 is evenly fixedly connected to the pad 12.

[0034] The threaded rod 5 cooperates with the threaded sleeve 6 to drive the adjustment plate 4 to slide up and down along the guide rod 3, so that the side support plate 9 can be expanded outward through the cooperation of the first support rod 7 and the second support rod 8. Multiple first support rods 7 form a parallelogram and cooperate with the second support rods 8 to form a trapezoid, thereby effectively avoiding the problem of tilting and shaking of the side support plate 9. The pad 12 is positioned with the side of the supporting foundation pit through the fixed cone 13. Through the setting of the slide rail 10 and the slide groove 11, the pad 12 and the side support plate 9 form a sliding connection relationship, thereby effectively avoiding the downward displacement of the pad 12 during operation and avoiding the problem of the support point sliding down.

[0035] The top outer side of the threaded rod 5 is fixedly connected with a worm wheel 14, and the outer side of the worm wheel 14 is provided with a worm 15 that is in transmission engagement with the worm wheel 14, and the worm 15 is rotatably connected to the inner side of the inverted U-shaped frame 2. A motor 16 is fixedly installed at the side wall of the U-shaped frame 2 corresponding to the worm 15, and the output end of the motor 16 is fixedly connected to the worm 15. The motor 16 is externally connected to a power supply and a switch. In this embodiment, the load-bearing part can be directly formed above the inverted U-shaped frame 2, and the motor 16 is fixedly provided on the load-bearing part at this time to ensure stability.

[0036] The worm 15 is driven to rotate by the motor 16 , and the worm 15 drives the threaded rod 5 to rotate through the worm wheel 14 , thereby forming a self-locking effect.

[0037] The side support plate 9 is provided with locking bolts 17 threadedly connected at even distances corresponding to the slide rail 10. The locking bolts 17 penetrate the slide rail 10 and are tightly pressed against the slide groove 11. The side support plate 9 is provided with threaded holes for the locking bolts 17 to be threadedly connected, and the slide rail 10 is provided with through holes for the locking bolts 17 to penetrate.

[0038] By setting the locking bolts 17 , the positional relationship between the slide groove 11 and the slide rail 10 can be locked after support, so that the side support plate 9 and the pad 12 are fixed.

[0039] The ends of the slide groove 11 are penetrated by fixing bolts 18, which are inserted into the pad 12 and threadedly connected to the pad 12. The slide groove 11 is provided with a through hole for the fixing bolts 18 to pass through, and the pad 12 is provided with a threaded hole for the fixing bolts 18 to be threadedly connected.

[0040] By setting the fixing bolts 18, the movement limit can be set on both sides of the slide groove 11 to prevent the slide groove 11 and the slide rail 10 from slipping. At the same time, the fixing bolts 18 and the pad 12 can be disassembled to replace the pad 12, so that pads 12 of different sizes can be replaced to adapt to different support requirements.

[0041] The working principle of the utility model is:

[0042] When in use, first place the device at the position requiring support through the lifting ear. At this time, connect the motor 16 to the power supply and start it. The motor 16 drives the threaded rod 5 to rotate through the cooperation of the worm gear 14 and the worm 15. The rotating threaded rod 5 drives the adjustment plate 4 to descend along the guide rod 3 through the threaded sleeve 6, so that the cooperation of the second support rod 8 and the first support rod 7 pushes the side support plate 9 outward. The height of the pad 12 is adjusted by the setting of the slide rail 10 and the slide groove 11 to control the support position until the pad 12 drives the fixing cone 13 to be inserted into the side wall of the foundation pit. At this time, the motor 16 continues to work and the support pad 12 is pressed against the side wall of the foundation pit. At this time, tighten the locking bolt 17 so that the slide rail 10 and the slide groove 11 are fixed to complete the foundation pit support operation. The fixing bolt 18 can be removed before use to replace the appropriate pad 12 for installation to adapt to support operations of different sizes.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support device for foundation pit engineering, characterized in that: include, Bottom trough, The first support rods are symmetrically arranged on both outer sides of the bottom groove, and a guide frame is installed in the bottom groove, an adjustment plate is attached to the guide frame, and the adjustment plate is linked with a threaded sleeve in the guide frame that is lifted and lowered along the guide frame; A second support rod is provided on both sides of the adjustment plate, the ends of the first support rod and the second support rod are hinged to the side support plate, a slide rail is provided on the outer side of the side support plate, a slide groove is slidably connected to the outer side of the slide rail, and a pad for driving the fixed cone is provided on the outer side of the slide groove.

2. A supporting device for foundation pit engineering according to claim 1, characterized in that: The guide frame is an inverted U-shaped frame fixed on the bottom groove and forming an enclosure cavity. The threaded rod fixed in the bottom groove and located in the middle of the inverted U-shaped frame is threadedly connected with a threaded sleeve integrally formed on the adjustment plate.

3. A supporting device for foundation pit engineering according to claim 2, characterized in that: The guide frame forms an assembly cavity at the top of the threaded rod, and a driving mechanism for driving the threaded rod to rotate to drive the lifting threaded sleeve is arranged in the assembly cavity. A motor for driving the driving mechanism to move is fixed on the outside of the guide frame.

4. A supporting device for foundation pit engineering according to claim 3, characterized in that: The driving mechanism is a worm gear assembly, the threaded rod is arranged cocentrically with the worm wheel in the worm gear, and the worm wheel is externally driven and meshed with the worm.

5. A supporting device for foundation pit engineering according to claim 4, characterized in that: A bearing portion is formed above the inverted U-shaped frame, and the motor for driving the worm to rotate is fixedly arranged on the bearing portion.

6. A supporting device for foundation pit engineering according to claim 2, characterized in that: Two guide rods fixed in the bottom groove are symmetrically arranged in the enclosure cavity, and the adjustment plate is slidably connected to the two guide rods.

7. A supporting device for foundation pit engineering according to claim 1, characterized in that: Both outer sides of the bottom groove extend to form an assembly portion, and the assembly portion on each side is provided with at least two first support rods parallel to each other.

8. A supporting device for foundation pit engineering according to claim 1, characterized in that: The side support plate is provided with a locking bolt, and the locking bolt passes through the slide rail and abuts against the slide groove.

9. A supporting device for foundation pit engineering according to claim 1, characterized in that: The end of the slide groove is provided with a fixing bolt penetrating therethrough, and the backing plate is provided with a fixing screw hole matching the fixing bolt.

10. A supporting device for foundation pit engineering according to claim 1, characterized in that: The bottom groove forms an assembly groove, and the assembly groove has a height of at least 50 mm.

Images