Foundation pit retaining wall movable protection device

Abstract

The utility model relates to the technical field of building construction, and particularly discloses a foundation pit retaining wall movable type protective device which comprises a protective cover, a fixing plate is installed at the bottom of the protective cover, a first fixing base and a second fixing base are installed on the two sides of the outer portion of the fixing plate respectively, and two symmetrical supporting frames and universal wheels are installed on the rear side of the fixing plate respectively. First mounting discs are mounted at the top ends of the inner sides of the two supporting frames, connecting rods are movably connected to the interiors of the two supporting frames, pulling plates are mounted at one ends of the two connecting rods, springs are mounted on the inner sides of the two supporting frames, and a plurality of sets of balls are arranged in the first mounting discs and the second mounting discs; the device can be hung on the surface of a retaining wall and can move to different positions along the retaining wall through cooperation of a plurality of sets of balls and two universal wheels, the operation mode is simple and convenient, the safety coefficient is high, the protection area of the protection plate can be adjusted, and the protection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a movable protective device for foundation pit retaining walls. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. For shallow excavations, slope protection can be used to stabilize the soil slope, with the slope determined according to relevant construction regulations. For deeper excavations or those near adjacent buildings, excavation pit wall support methods, shotcrete wall protection methods, and even large excavation pits may employ methods such as diaphragm walls and interlocking column-type bored piles to prevent the outer soil layer from collapsing.

[0003] Currently, when cleaning shotcrete walls in existing foundation pits, tarpaulins are usually used to cover the walls that do not need to be shotcreted to prevent unnecessary pollution. However, tarpaulins are usually fixed to the wall during use, and it is inconvenient to move the tarpaulins when it is necessary to cover the adjacent walls later, which causes inconvenience to the workers and reduces work efficiency. To address this, we propose a movable protective device for foundation pit retaining walls. Utility Model Content

[0004] The purpose of this utility model is to provide a movable protective device for foundation pit retaining walls, in order to solve the problem mentioned in the background art that when cleaning shotcrete retaining walls in foundation pits, tarpaulins are usually used to cover the wall surfaces that do not need to be shotcreted to prevent unnecessary pollution. However, tarpaulins are usually fixed to the wall surface during use, and it is inconvenient to move the tarpaulin when it is necessary to cover the adjacent wall surface later, which causes inconvenience to the workers and reduces work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a movable protective device for a foundation pit retaining wall, comprising a protective cover, a fixing plate installed at the bottom of the protective cover, a first fixing seat and a second fixing seat respectively installed on the outer sides of the fixing plate, two symmetrical support frames and casters respectively installed on the rear side of the fixing plate, a first mounting plate installed at the top inner side of each of the two support frames, a connecting rod movably connected inside each of the two support frames, a pull plate installed at one end of each of the two connecting rods, a second mounting plate installed at the other end of each of the two connecting rods, a spring installed inside each of the two support frames, several sets of ball bearings arranged inside the first and second mounting plates, a motor installed inside the protective cover, and the tops of the first and second fixing seats respectively... The system is rotatably connected by a first synchronous pulley and a second synchronous pulley. A synchronous belt is fitted around the outside of both the first and second synchronous pulleys. A lead screw is movably connected to the inside of both the first and second fixed seats via bearings. A movable seat is movably connected to the outside of both lead screws. A limit plate is installed on one side of the outside of both movable seats. A limit groove is opened on one side of the inside of both the first and second fixed seats. A connecting frame is installed at the bottom of both movable seats. A mounting frame is installed at the bottom of both connecting frames. A protective plate is installed on the top of the mounting frame. The protective plate is located inside the fixed plate. Connecting plates are installed on both sides of the outside of the protective plate. Connecting grooves are opened on both sides of the inside of the fixed plate. A scraper is installed at one bottom end of the fixed plate. A control device is installed at the top of the protective cover.

[0006] The diameter of the pull plate is larger than the diameter of the connecting rod, and the pull plate is located on the outside of the support frame.

[0007] The spring is located outside the connecting rod, and one end of the spring is connected to the second mounting plate.

[0008] The motor's power drive end is connected to the first synchronous pulley, and the tops of the two lead screws are connected to the first and second synchronous pulleys, respectively.

[0009] The limiting plate is located inside the limiting groove and has a sliding connection structure.

[0010] The bottom ends of the two connecting brackets pass through and extend to the bottom of the first and second fixing seats, respectively.

[0011] The connecting plate is slidably connected inside the connecting groove, one side of the scraper is inclined, and one end of the scraper is in contact with one side of the protective plate.

[0012] This utility model has at least the following beneficial effects:

[0013] When in use, this device can be hung on the surface of the retaining wall. With the cooperation of several sets of ball bearings and two universal wheels, it can move to different positions along the retaining wall. The operation is simple and convenient, with a high safety factor. In addition, the protective area of ​​the protective plate can be adjusted to improve the protective effect, making it highly applicable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a rear view of the structure of this utility model;

[0016] Figure 3 This is an internal structural diagram of the present invention;

[0017] Figure 4 For practical purposes Figure 3 A magnified view of A in the middle.

[0018] In the diagram: 1. Protective cover; 2. Fixing plate; 3. First fixing seat; 4. Second fixing seat; 5. Support frame; 6. First mounting plate; 7. Connecting rod; 8. Pull plate; 9. Second mounting plate; 10. Spring; 11. Caster wheel; 12. Motor; 13. First synchronous pulley; 14. Second synchronous pulley; 15. Synchronous belt; 16. Lead screw; 17. Moving seat; 18. Limiting plate; 19. Limiting groove; 20. Connecting frame; 21. Mounting frame; 22. Protective plate; 23. Connecting plate; 24. Connecting groove; 25. Scraper; 26. Control device; 27. Ball bearing. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1 to 4This utility model provides a technical solution: a movable protective device for a foundation pit retaining wall, including a protective cover 1, a fixing plate 2 installed at the bottom of the protective cover 1, a first fixing seat 3 and a second fixing seat 4 respectively installed on the outer sides of the fixing plate 2, two symmetrical support frames 5 and casters 11 respectively installed on the rear side of the fixing plate 2, a first mounting plate 6 installed at the top inner side of each of the two support frames 5, a connecting rod 7 movably connected inside each of the two support frames 5, and a pull plate 8 installed at one end of each of the two connecting rods 7, the diameter of the pull plate 8 being larger than the diameter of the connecting rod 7, and the pull plate 8 being located on the outer side of the support frame 5. The other end of each connecting rod 7 is equipped with a second mounting plate 9. Springs 10 are installed on the inner sides of both support frames 5. The springs 10 are located outside the connecting rod 7, and one end of each spring 10 is connected to the second mounting plate 9. Several sets of ball bearings 27 are provided inside both the first mounting plate 6 and the second mounting plate 9. A motor 12 is installed inside the protective cover 1. A first synchronous pulley 13 and a second synchronous pulley 14 are rotatably connected to the tops of the first fixed seat 3 and the second fixed seat 4, respectively. The power drive end of the motor 12 is connected to the first synchronous pulley 13. The outer surfaces of the first synchronous pulley 13 and the second synchronous pulley 14 are jointly fitted with… The synchronous belt 15, the first fixed seat 3, and the second fixed seat 4 are all internally connected to lead screws 16 via bearings. The tops of the two lead screws 16 are respectively connected to the first synchronous pulley 13 and the second synchronous pulley 14. The outside of each lead screw 16 is movably connected to a movable seat 17. A limit plate 18 is installed on one side of the outside of each movable seat 17. A limit groove 19 is opened on one side of the inside of each of the first fixed seat 3 and the second fixed seat 4. The limit plate 18 is located inside the limit groove 19 and is a sliding connection structure. A connecting frame 20 is installed at the bottom of each of the two movable seats 17. The bottom ends of the two connecting frames 20 are respectively through... It extends to the bottom of the first fixed seat 3 and the second fixed seat 4. The bottom ends of the two connecting frames 20 are jointly equipped with a mounting frame 21. The top of the mounting frame 21 is equipped with a protective plate 22. The protective plate 22 is located inside the fixed plate 2. The outer sides of the protective plate 22 are equipped with connecting plates 23. The inner sides of the fixed plate 2 are provided with connecting grooves 24. The connecting plates 23 are slidably connected inside the connecting grooves 24. A scraper 25 is installed at one bottom end of the fixed plate 2. One side of the scraper 25 is inclined, and one end of the scraper 25 is in contact with one side of the protective plate 22. A control device 26 is installed at the top of the protective cover 1.

[0022] When the workers hang the two support frames 5 on the concrete wall at the foundation pit, they first pull the pull plate 8 outwards. The pull plate 8 drives the second mounting plate 9 to move through the connecting rod 7. At this time, the spring 10 is in a compressed state. Then, the two support frames 5 are hung on the wall. Several sets of ball bearings 27 set at the bottom of the two first mounting plates 6 are in contact with the top of the wall, and the two casters 11 are in contact with the surface of the wall that needs to be protected. Then, the pull plate 8 is released. The setting of the spring 10 allows the ball bearings 27 set on one side of the second mounting plate 9 to fit against concrete walls of different widths, so that the device will not easily tilt and improve the stability of the device. When the device needs to be moved later, the position of the whole device can be moved by the cooperation of several sets of ball bearings 27 set on one side of the first mounting plate 6 and the second mounting plate 9 and the two casters 11.

[0023] After the device is placed, when the protective plate 22 needs to be extended, the operator starts the motor 12 through the control device 26. The power drive end of the motor 12 drives the first synchronous wheel 13 to rotate. The first synchronous wheel 13 drives the second synchronous wheel 14 to rotate through the synchronous belt 15. The first synchronous wheel 13 and the second synchronous wheel 14 drive the lead screw 16 installed at the bottom to rotate. At this time, the limiting plate 18 and the limiting groove 19 make the two moving seats 17 move linearly inside the first fixed seat 3 and the second fixed seat 4 respectively. Both moving seats 17 drive the mounting frame 21 to move downward through the connecting frame 20 installed at the bottom. The mounting frame 21 then drives the protective plate 22 to move inside the fixed plate 2 until the protective plate 22 moves downward to the appropriate protective position. Then the motor 12 stops operating. At this time, the protective plate 22 can perform the protective function. This device has a wide range of applications and the adjustment method is simple and convenient.

[0024] Example 2

[0025] like Figures 1 to 4 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that the connection plate 23 and the connection groove 24 prevent the protective plate 22 from detaching from the interior of the fixed plate 2. When the protected plate 22 is stored after protection, the power drive end of the motor 12 rotates in the opposite direction to move the protective plate 22 into the interior of the fixed plate 2. When the protective plate 22 is moved, since one side of the scraper 25 is in contact with the protective surface of the protective plate 22, the scraper 25 can scrape off the concrete adhering to the outer protective surface of the protective plate 22, thus having a cleaning effect.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable protective device for a foundation pit retaining wall, comprising a protective cover (1), characterized in that: A fixing plate (2) is installed at the bottom of the protective cover (1). A first fixing seat (3) and a second fixing seat (4) are respectively installed on the outer sides of the fixing plate (2). Two symmetrical support frames (5) and casters (11) are respectively installed on the rear side of the fixing plate (2). A first mounting plate (6) is installed on the top inner side of each of the two support frames (5). A connecting rod (7) is movably connected inside each of the two support frames (5). A pull plate (8) is installed at one end of each of the two connecting rods (7). The other end of each of the connecting rods (7) is equipped with a second mounting plate (9). Springs (10) are installed on the inner sides of both support frames (5). Several sets of ball bearings (27) are arranged inside the first mounting plate (6) and the second mounting plate (9). A motor (12) is installed inside the protective cover (1). A first synchronous pulley (13) and a second synchronous pulley (14) are rotatably connected to the tops of the first fixed seat (3) and the second fixed seat (4), respectively. A synchronous belt (15) is fitted around the outside of the first synchronous pulley (13) and the second synchronous pulley (14). A lead screw (16) is movably connected to the inside of both the first fixed seat (3) and the second fixed seat (4) via bearings. Movable seats (17) are movably connected to the outside of both lead screws (16). Limit plates (18) are installed on one side of the outside of both movable seats (17). Limit grooves (19) are opened on one side of the inside of both the first fixed seat (3) and the second fixed seat (4). A connecting frame is installed at the bottom of both movable seats (17). (20) The bottom ends of the two connecting frames (20) are jointly equipped with a mounting frame (21). The top of the mounting frame (21) is equipped with a protective plate (22). The protective plate (22) is located inside the fixed plate (2). The outer sides of the protective plate (22) are equipped with connecting plates (23). The inner sides of the fixed plate (2) are provided with connecting grooves (24). The bottom end of the fixed plate (2) is equipped with a scraper (25). The top of the protective cover (1) is equipped with a control device (26).

2. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The diameter of the pull plate (8) is larger than the diameter of the connecting rod (7), and the pull plate (8) is located on the outside of the support frame (5).

3. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The spring (10) is located outside the connecting rod (7), and one end of the spring (10) is connected to the second mounting plate (9).

4. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The power drive end of the motor (12) is connected to the first synchronous pulley (13), and the tops of the two lead screws (16) are respectively connected to the first synchronous pulley (13) and the second synchronous pulley (14).

5. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The limiting plate (18) is located inside the limiting groove (19) and is a sliding connection structure.

6. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The bottom ends of the two connecting brackets (20) respectively penetrate and extend to the bottom of the first fixing seat (3) and the second fixing seat (4).

7. The movable protective device for foundation pit retaining walls according to claim 1, characterized in that: The connecting plate (23) is slidably connected inside the connecting groove (24), one side of the scraper (25) is inclined, and one end of the scraper (25) is in contact with one side of the protective plate (22).

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