Deep foundation pit supporting device

Abstract

The utility model belongs to the technical field of foundation pit supporting devices, and particularly provides a deep foundation pit supporting device which comprises cross beams, a supporting column, a hanging cable and a fastening mechanism, the two cross beams are fixedly installed on the inner wall of a foundation pit in parallel, positioning hanging plates are assembled on the side walls of the cross beams, the two ends of the supporting column are fixed to the side walls of the cross beams through the positioning hanging plates respectively, and the hanging cable is connected with the fastening mechanism. The supporting column is formed by splicing a plurality of sections of column bodies end to end, and the fastening mechanism is assembled at the end of any column body. The fastening mechanism comprises an inner pipe body, an outer sleeve, a holding mechanism, a wedge groove and a fastening wedge. According to the design, the fastening wedge and the push rod are integrated into the fastening mechanism, tools such as a wedge and hydraulic supporting equipment do not need to be prepared independently in the construction process, and the operation process is simplified. And through the guide structure, it can be ensured that the moving track of the fastening wedge is accurate and controllable, a standardized construction process can be formulated, and the error rate and the error range of the construction process are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit supporting devices, and in particular provides a deep foundation pit supporting device. Background Art

[0002] Foundation pit excavation is a crucial step in modern building construction. Based on the construction process, it can be categorized into various methods, including sequential, reverse, and semi-reverse methods. The sequential method is widely used due to its ease of construction and low cost. The sequential method requires extensive foundation pit support, especially in deep foundation pit excavation, where the stability of the support is crucial.

[0003] Currently, the deep foundation pit support devices in use on the market are not significantly different from conventional support devices, with the main structures of the same devices consisting of beams, pillars, wedges, and hydraulic support components. The construction process of operating the hydraulic support components to tighten the pillars and drive the wedges after the pillars are hoisted is highly dependent on worker proficiency. Large deviations are prone to occur during on-site operations, resulting in high internal stress in the pillars after welding. Furthermore, the removal of the hydraulic support components after welding is relatively cumbersome.

[0004] In summary, it is necessary to develop a deep foundation pit support device with controllable costs, relatively simplified assembly process, and conducive to standardized on-site operations. Utility Model Content

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a deep foundation pit support device, including a crossbeam, a support column, a hanging cable and a fastening mechanism, two crossbeams are fixedly installed in parallel on the inner wall of the foundation pit, and the side walls of the crossbeams are equipped with positioning hanging plates. The two ends of the support column are respectively fixed to the side walls of the crossbeams through the positioning hanging plates;

[0006] The support column is formed by connecting multiple columns end to end, and the fastening mechanism is assembled at the end of any column.

[0007] Furthermore, the fastening mechanism includes an inner tube body, an outer tube, a clamping mechanism, a wedge groove and a fastening wedge. Both tube bodies are blind tubes. The wedge groove is radially arranged on the closed side end surface of the tube body, and the closed side end surfaces of the two tube bodies are arranged facing each other. The two clamping mechanisms are respectively fixedly connected to the two ends of the outer tube. The closed side end surfaces of the two tube bodies are respectively inserted into the outer tube from the two ends of the outer tube. When the clamping mechanism is locked, it can clamp and fix the inner tube body, and the fastening wedge is inserted into the wedge groove.

[0008] Furthermore, the open side end surfaces of the tube bodies are all provided with welding seats, which can be hung on the positioning hanging plates, and the welding seats, the positioning hanging plates and the cross beams are welded and fixed in subsequent processes.

[0009] Furthermore, a reinforcing rib is axially provided at the bottom of the outer sleeve.

[0010] Furthermore, the fastening mechanism also includes a positioning pin, a positioning groove, a push rod and a support groove, and the positioning pin, positioning groove, push rod and support groove are all arranged on the closed side end surface of the tube body, wherein the position of the positioning pin corresponds to the position of the positioning groove, and the position of the push rod corresponds to the position of the support groove. When the push rod is extended, it pushes the two tube bodies away from each other, and the positioning pin is inserted into the positioning groove, limiting the relative movement direction of the two tube bodies to the axial direction.

[0011] Furthermore, a sliding groove is provided on the outer wall of the outer sleeve, and the fastening wedge is slidably assembled in the sliding groove.

[0012] Furthermore, a cover is mounted on the top of the chute, and the top of the fastening wedge passes through the cover and extends to the outside.

[0013] Furthermore, the sealing cover includes a cover body, a limiting frame and a nut, the limiting frame is arranged on the upper surface of the cover body, and the nut is located between the cover body and the limiting frame;

[0014] The limiting frame is composed of a circular ring and three supporting legs. The three supporting legs are symmetrically distributed around the circular ring, and the spacing between adjacent supporting legs is used for inserting a wrench.

[0015] Furthermore, the limiting frame is provided with limiting teeth around it to precisely limit the nut under the limiting frame;

[0016] The fastening wedge includes a wedge body and a screw rod. The wedge body is vertically arranged, and the screw rod is vertically assembled on the top of the wedge body. The position of the nut corresponds to the position of the screw rod, and the nut is threadedly connected to the screw rod.

[0017] Furthermore, a guide block is provided on the inner wall of the slide groove, and a guide groove is provided on the side wall of the fastening wedge. The guide block and the guide groove cooperate to provide directional guidance for the fastening wedge.

[0018] The beneficial effects of using the utility model are:

[0019] By integrating the tightening wedge and push rod into the tightening mechanism, this design simplifies the operation process by eliminating the need for separate tools such as wedges and hydraulic support equipment. Furthermore, the guide structure ensures the precise and controllable movement of the tightening wedge, facilitating the development of a standardized construction process and reducing the error rate and error range during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the fastening mechanism of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the inner tube body of the utility model;

[0023] Figure 4 This is another structural schematic diagram of the inner tube body of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the outer sleeve of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the sealing cover and the fastening wedge of the utility model;

[0026] Reference numerals include:

[0027] 1. Beam; 2. Support column; 3. Hanging rope;

[0028] 4. Fastening mechanism; 401. Inner tube body;

[0029] 402, outer sleeve; 4021, reinforcement;

[0030] 403, holding mechanism; 404, welding seat; 405, wedge groove; 406, positioning pin; 407, positioning groove; 408, push rod; 409, support groove;

[0031] 410, chute; 4101, guide block;

[0032] 411. Sealing cover; 4111. Cover body; 4112. Limiting frame; 4113. Nut; 4114. Limiting tooth;

[0033] 412, fastening wedge; 4121, wedge body; 4122, screw rod; 4123, guide groove. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings.

[0035] Reference Figures 1-6 A deep foundation pit support device includes a crossbeam 1, a support column 2, a hanging cable 3 and a fastening mechanism 4. Two crossbeams 1 are fixedly installed in parallel on the inner wall of the foundation pit. Positioning hanging plates are installed on the side walls of the crossbeams 1. The two ends of the support column 2 are respectively fixed to the side walls of the crossbeam 1 through the positioning hanging plates.

[0036] The support column 2 is formed by connecting multiple columns end to end, and the fastening mechanism 4 is assembled at the end of any column.

[0037] The fastening mechanism 4 includes an inner tube body 401, an outer tube 402, a clamping mechanism 403, a wedge groove 405 and a fastening wedge 412. The two tube bodies 401 are blind tubes. The wedge groove 405 is radially arranged on the closed side end surface of the tube body 401, and the closed side end surfaces of the two tube bodies 401 are arranged facing each other. The two clamping mechanisms 403 are respectively fixedly connected to the two ends of the outer tube 402. The closed side end surfaces of the two tube bodies 401 are respectively inserted into the outer tube 402 from the two ends of the outer tube 402. When the clamping mechanism 403 is locked, it can clamp and fix the inner tube body 401. The fastening wedge 412 is inserted into the wedge groove 405.

[0038] When the fastening wedge 412 is wedged into the wedge groove 405 , the two tube bodies 401 are pushed to axially displace in opposite directions by squeezing the inclined surface of the wedge groove 405 .

[0039] The open side end surfaces of the tube body 401 are all provided with welding seats 404 , which can be hung on the positioning hanging plate. In the subsequent process, the welding seats, the positioning hanging plate and the crossbeam 1 are welded and fixed.

[0040] A reinforcing rib 4021 is axially provided at the bottom of the outer sleeve 402 .

[0041] The fastening mechanism 4 also includes a positioning pin 406, a positioning groove 407, a push rod 408 and a support groove 409. The positioning pin 406, the positioning groove 407, the push rod 408 and the support groove 409 are all arranged on the closed side end surface of the tube body 401, wherein the position of the positioning pin 406 corresponds to the position of the positioning groove 407, and the position of the push rod 408 corresponds to the position of the support groove 409. When the push rod 408 is extended, it pushes the two tube bodies 401 away from each other, and the positioning pin 406 is inserted into the positioning groove 407, limiting the relative movement direction of the two tube bodies 401 to the axial direction.

[0042] A sliding groove 410 is defined on the outer wall of the outer sleeve 402 , and a fastening wedge 412 is slidably assembled in the sliding groove 410 .

[0043] A cover 411 is mounted on the top of the slide 410 , and a top of the fastening wedge 412 passes through the cover 411 and extends to the outside.

[0044] The cover 411 includes a cover body 4111, a limiting frame 4112 and a nut 4113. The limiting frame 4112 is provided on the upper surface of the cover body 4111, and the nut 4113 is located between the cover body 4111 and the limiting frame 4112.

[0045] The limiting frame 4112 is composed of a circular ring and three legs. The three legs are symmetrically distributed around the circular ring, and the distance between adjacent legs is sufficient for the insertion of a wrench.

[0046] Limiting teeth 4114 are provided around the limiting frame 4112 to precisely limit the nut 4113 under the limiting frame 4112;

[0047] The fastening wedge 412 includes a wedge body 4121 and a screw rod 4122 . The wedge body 4121 is vertically arranged, and the screw rod 4122 is vertically assembled on the top of the wedge body 4121 . The position of the nut 4113 corresponds to the position of the screw rod 4122 , and the nut 4113 is threadedly connected to the screw rod 4122 .

[0048] Preferably, the wedge body 4121 of the fastening wedge 412 is a three-pronged structure, and correspondingly, the wedge groove 405 is a three-pronged staggered shape.

[0049] A guide block 4101 is provided on the inner wall of the slide groove 410 , and a guide groove 4123 is provided on the side wall of the fastening wedge 412 . The guide block 4101 and the guide groove 4123 cooperate to provide directional guidance for the fastening wedge 412 .

[0050] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scope based on the concept of the present invention. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of the present invention.

Claims

1. A deep foundation pit support device, characterized by: It includes a crossbeam, a support column, a hanging rope and a fastening mechanism. The two crossbeams are fixedly installed on the inner wall of the foundation pit in parallel. The side walls of the crossbeams are equipped with positioning hanging plates. The two ends of the support column are respectively fixed to the side walls of the crossbeams through the positioning hanging plates. The support column is formed by connecting multiple columns end to end, and the fastening mechanism is assembled at the end of any column.

2. A deep foundation pit support device according to claim 1, characterized in that: The fastening mechanism includes an inner tube body, an outer tube, a clamping mechanism, a wedge groove and a fastening wedge. Both tube bodies are blind tubes. The wedge groove is radially arranged on the closed side end surface of the tube body, and the closed side end surfaces of the two tube bodies are arranged opposite to each other. The two clamping mechanisms are respectively fixedly connected to the two ends of the outer tube. The closed side end surfaces of the two tube bodies are respectively inserted into the outer tube from the two ends of the outer tube. When the clamping mechanism is locked, it can clamp and fix the inner tube body, and the fastening wedge is inserted into the wedge groove.

3. The deep foundation pit support device according to claim 2, characterized in that: The open side end surfaces of the tube body are all provided with welding seats, which can be hung on the positioning hanging plate. In the subsequent process, the welding seats, the positioning hanging plate and the crossbeam are welded and fixed.

4. A deep foundation pit support device according to claim 2, characterized in that: A reinforcing rib is axially arranged on the bottom of the outer sleeve.

5. The deep foundation pit support device according to claim 1, characterized in that: The fastening mechanism also includes a positioning pin, a positioning groove, a push rod and a support groove. The positioning pin, positioning groove, push rod and support groove are all arranged on the closed side end surface of the tube body, wherein the position of the positioning pin corresponds to the position of the positioning groove, and the position of the push rod corresponds to the position of the support groove. When the push rod is extended, it pushes the two tube bodies away from each other. The positioning pin is inserted into the positioning groove, and the relative movement direction of the two tube bodies is limited to the axial direction.

6. The deep foundation pit support device according to claim 2, characterized in that: A sliding groove is provided on the outer wall of the outer sleeve, and the fastening wedge is slidably assembled in the sliding groove.

7. The deep foundation pit support device according to claim 6, characterized in that: The top of the chute is equipped with a cover, and the top of the fastening wedge penetrates the cover and extends to the outside.

8. The deep foundation pit support device according to claim 7, characterized in that: The sealing cover comprises a cover body, a limiting frame and a nut, wherein the limiting frame is arranged on the upper surface of the cover body, and the nut is located between the cover body and the limiting frame; The limit frame is composed of a ring and three legs, the three legs are symmetrically distributed around the ring, and the spacing between adjacent legs is for inserting a wrench; The fastening wedge includes a wedge body and a screw rod. The wedge body is vertically arranged, and the screw rod is vertically assembled on the top of the wedge body. The position of the nut corresponds to the position of the screw rod, and the nut is threadedly connected to the screw rod.

9. The deep foundation pit supporting device according to claim 8, characterized in that: Limiting teeth are arranged around the limiting frame to accurately limit the nut under the limiting frame.

10. A deep foundation pit supporting device according to any one of claims 6 to 9, characterized in that: A guide block is provided on the inner wall of the slide groove, and a guide groove is provided on the side wall of the fastening wedge. The guide block and the guide groove cooperate to provide a directional guiding effect on the fastening wedge.

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