Safety protection device for constructional engineering foundation pit

Abstract

The utility model relates to a safety protection device for a building engineering foundation pit, and belongs to the technical field of building engineering. Comprising two groups of soil retaining plates and a supporting assembly, the supporting assembly comprises a supporting cross beam, supporting legs supported at the pit bottom are arranged in the middle of the supporting cross beam, and a first steel plate force application device and a second steel plate force application device which abut against the corresponding soil retaining plates are arranged at the two ends of the supporting cross beam correspondingly; the other end of the first upper-layer inclined support and the other end of the first lower-layer inclined support are hinged to a first supporting leg and a second supporting leg which are connected with the soil retaining plate in an abutting mode respectively, and a first driver capable of changing the overturning angle of the first upper-layer inclined support and the overturning angle of the first lower-layer inclined support is arranged in the middle of the first hinge seat. The utility model has the following beneficial effects: the angle between the first upper-layer inclined support and the first lower-layer inclined support can be reduced by utilizing the first driver, and after the first supporting leg and the second supporting leg are connected with the soil retaining plate in an abutting manner, thrust is applied to the soil retaining plate, so that the soil retaining effect of the soil retaining plate is ensured.

Description

Technical Field

[0001] The utility model relates to a safety protection device for a foundation pit of a construction project, belonging to the technical field of construction engineering. Background Technique

[0002] A foundation pit of a construction project is an earth pit excavated at the designed position of the foundation according to the base elevation and the foundation plane size. Support structures should be set around the earth pit to prevent the collapse of the outer soil layer.

[0003] The utility model with the patent number 202223156380.7 discloses a support structure for a civil engineering foundation pit. The support structure for the civil engineering foundation pit includes: retaining plates and a support assembly; wherein, the retaining plates are arranged in pairs and are used for being installed in the foundation pit to support the side wall of the foundation pit; the support assembly is arranged between two retaining plates arranged in pairs, and both ends of the support assembly are respectively connected with the two retaining plates for supporting the two retaining plates; a protection assembly is arranged at the top of each retaining plate for protecting the foundation pit; a reinforcement plate is arranged at the bottom of each retaining plate. The utility model supports the side wall of the foundation pit through the retaining plates, and the protection assembly on the retaining plates can play a role in protecting the foundation pit.

[0004] The current technology has incomplete considerations and has the following drawbacks: The safety support and protection device for a foundation pit is composed of a horizontal support rod and retaining plates at both ends of the horizontal support rod. The retaining plates are abutted against the side wall of the foundation pit to achieve the support effect. However, it is found in the actual construction process that this simple horizontal support method has the problem of unstable support and poor support effect.

[0005] To solve one of the above problems, there is an urgent need for a safety protection device for a foundation pit of a construction project. Content of the Utility Model

[0006] According to the deficiencies in the above prior art, the technical problem to be solved by the present utility model is: how to make the first support foot, the second support foot and the third support foot simultaneously apply thrust to the retaining plate to ensure the soil retaining effect of the retaining plate. For this purpose, a safety protection device for a foundation pit of a construction project is provided.

[0007] The safety protection device for the foundation pit of a construction project described in the present utility model includes two retaining plates and a support assembly between the two retaining plates for supporting the retaining plates. It is characterized in that: the support assembly includes a support cross beam, a support leg for supporting on the bottom of the pit is arranged in the middle of the support cross beam, and a first steel plate force application device and a second steel plate force application device for abutting against the corresponding retaining plates are respectively arranged at both ends of the support cross beam. The first steel plate force application device includes a first hinge seat vertically connected to the support cross beam and symmetrically arranged first upper inclined supports and first lower inclined supports. The first hinge seat is vertically arranged, and the upper and lower ends of the first hinge seat are respectively hinged to the first upper inclined support and the first lower inclined support. The other ends of the first upper inclined support and the first lower inclined support are respectively hinged with a first support foot and a second support foot for abutting against the retaining plate. A first driver capable of changing the flipping angles of the first upper inclined support and the first lower inclined support is arranged in the middle of the first hinge seat, and the first driver changes the angle between the first upper inclined support and the first lower inclined support.

[0008] Preferably, the first driver includes a first guide post vertically connected to the first hinge seat, a first sliding sleeve sleeved on the first guide post and slidable along the length direction of the first guide post. First adjusting connecting rods and second adjusting connecting rods are respectively hinged on both sides of the first sliding sleeve. The other ends of the first adjusting connecting rod and the second adjusting connecting rod are respectively hinged to the first upper inclined support and the first lower inclined support. It also includes a left sleeve inserted and connected to the end of the first guide post. A left jack is fixed at the end of the left sleeve, a third support foot is installed at the telescopic end of the left jack, and the right end of the left sleeve abuts against the first sliding sleeve.

[0009] Preferably, the cross section of the first guide post is rectangular, and the inner holes of the first sliding sleeve and the left sleeve are rectangular holes and are all slidably matched with the outer wall of the first guide post. While ensuring sliding, rotation is avoided.

[0010] Preferably, the second steel plate force application device includes a second hinge seat vertically connected to the support cross beam and symmetrically arranged second upper inclined supports and second lower inclined supports. The second hinge seat is vertically arranged, and the upper and lower ends of the second hinge seat are respectively hinged to the second upper inclined support and the second lower inclined support. The other ends of the second upper inclined support and the second lower inclined support are respectively hinged with a fourth support foot and a fifth support foot for abutting against the retaining plate. A second driver capable of changing the flipping angles of the second upper inclined support and the second lower inclined support is arranged in the middle of the second hinge seat, and the second driver changes the angle between the second upper inclined support and the second lower inclined support.

[0011] The operation mode of the second steel plate force application device is the same as that of the first steel plate force application device. The second steel plate force application device applies a thrust force to the retaining plate to ensure the retaining effect of the retaining plate.

[0012] Preferably, the second driver includes a second guide post vertically connected to the second hinge seat, a second sliding sleeve sleeved on the second guide post and slidable along the length direction of the second guide post. Third adjusting connecting rods and fourth adjusting connecting rods are respectively hinged on both sides of the second sliding sleeve. The other ends of the third adjusting connecting rod and the fourth adjusting connecting rod are respectively hinged to the second upper inclined support and the second lower inclined support. It also includes a right sleeve inserted and connected to the end of the second guide post. A right jack is fixed at the end of the right sleeve. A sixth support foot is installed at the telescopic end of the right jack. The left end of the right sleeve abuts against the second sliding sleeve.

[0013] The operation mode of the second driver is the same as that of the first driver. The fourth support foot, the fifth support foot and the sixth support foot simultaneously apply a thrust force to another group of retaining plates to ensure the retaining effect of the retaining plates.

[0014] Preferably, two groups of clamping plates are arranged at intervals on the first hinge seat. The end of the support cross beam is located between the two groups of clamping plates and is connected by bolts, so that the first hinge seat can be separated relative to the support cross beam, which is convenient for replacing support cross beams of different lengths to be applicable to foundation pits of different widths in construction projects.

[0015] Preferably, two groups of support legs are arranged at intervals along the length direction of the support cross beam, which is convenient for effectively supporting and initially positioning the support cross beam.

[0016] Preferably, two groups of lifting lugs are arranged at intervals along the length direction of the support cross beam, which cooperate with a crane to realize the hoisting of the support cross beam.

[0017] Preferably, the retaining plate is a steel plate, and the retaining effect is stable.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] For the safety protection device for the construction project foundation pit of the utility model, a support cross beam with a suitable length is selected as required, and the first steel plate force application device and the second steel plate force application device are assembled with the support cross beam on site. After the construction project foundation pit is excavated and formed, the construction of the retaining plate is carried out first. At the same time, the support cross beam and related components are transported into the foundation pit by a crane. The first driver can be used to make the angle between the first upper inclined support and the first lower inclined support smaller. After the first support foot and the second support foot are abutted against the retaining plate, a thrust force is applied to the retaining plate to ensure the retaining effect of the retaining plate.

[0020] For the safety protection device for building engineering foundation pits described in the present utility model, it is necessary to manually adjust the elongation of the left jack until the third support foot abuts against the retaining plate. When the left jack continues to elongate, the length of the first guiding column inserted into the left sleeve is increased. The left sleeve pushes the first sliding sleeve to slide towards the first hinge seat. The first adjusting link and the second adjusting link respectively pull the first upper inclined support and the first lower inclined support, making the angle between the first upper inclined support and the first lower inclined support smaller until the first support foot, the second support foot and the retaining plate are in contact. At this time, the first support foot, the second support foot and the third support foot simultaneously apply a thrust to the retaining plate to ensure the retaining effect of the retaining plate.

[0021] For the safety protection device for building engineering foundation pits described in the present utility model, two groups of clamping plates are arranged at intervals on the first hinge seat. The end of the support cross beam is located between the two groups of clamping plates and is connected by bolts, so that the first hinge seat can be separated from the support cross beam, which is convenient for replacing support cross beams of different lengths to be applicable to building engineering foundation pits of different widths. Brief Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 It is a schematic structural diagram of the present utility model;

[0024] Figure 2 It is an external structural diagram of the first steel plate applying force device of the present utility model;

[0025] Figure 3 It is a partial internal display diagram of the first steel plate applying force device of the present utility model;

[0026] In the figure: 1. Support cross beam; 2. Retaining plate; 3. Support leg; 4. Suspension ear; 5. First hinge seat; 6. First guiding column; 7. First sliding sleeve; 8. First upper inclined support; 9. First lower inclined support; 10. First adjusting link; 11. Second adjusting link; 12. First support foot; 13. Second support foot; 14. Left sleeve; 15. Left jack; 16. Third support foot. Detailed Description of the Embodiments

[0027] The following further describes the present utility model with reference to the drawings: The following further illustrates the present utility model through specific embodiments, but it is not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present utility model.

[0028] Example 1, as Figure 1-2 shown, the safety protection device for a building engineering foundation pit includes two retaining plates 2 and a support assembly between the two retaining plates 2 for supporting the retaining plates 2. The support assembly includes a support cross beam 1. A support leg 3 that supports on the bottom of the pit is arranged in the middle of the support cross beam 1. First steel plate force application devices and second steel plate force application devices that are respectively in contact with the corresponding retaining plates 2 are arranged at both ends of the support cross beam 1. The first steel plate force application device includes a first hinge seat 5 vertically connected to the support cross beam 1 and symmetrically arranged first upper inclined supports 8 and first lower inclined supports 9. The first hinge seat 5 is vertically arranged, and the upper and lower ends of the first hinge seat 5 are respectively hinged to the first upper inclined support 8 and the first lower inclined support 9. The other ends of the first upper inclined support 8 and the first lower inclined support 9 are respectively hinged with a first support foot 12 and a second support foot 13 that are in contact with the retaining plate 2. A first driver capable of changing the flipping angles of the first upper inclined support 8 and the first lower inclined support 9 is arranged in the middle of the first hinge seat 5. The first driver changes the angle between the first upper inclined support 8 and the first lower inclined support 9.

[0029] Select a support cross beam 1 with a suitable length as required, and assemble the first steel plate force application device and the second steel plate force application device with the support cross beam 1 on site. After the building engineering foundation pit is excavated and formed, first construct the retaining plate 2. At the same time, use a crane to transfer the support cross beam 1 and related components into the foundation pit. The first driver can be used to make the angle between the first upper inclined support 8 and the first lower inclined support 9 smaller. After the first support foot 12 and the second support foot 13 are in contact with the retaining plate 2, a thrust is applied to the retaining plate 2 to ensure the soil retaining effect of the retaining plate 2.

[0030] Example 2, as Figure 1-3As shown in the figure, the safety protection device for the foundation pit of a building project includes two retaining plates 2 and a support assembly between the two retaining plates 2 for supporting the retaining plates 2. The support assembly includes a support cross beam 1. A support leg 3 that supports on the bottom of the pit is arranged in the middle of the support cross beam 1. A first steel plate force application device and a second steel plate force application device that are in contact with the corresponding retaining plates 2 are respectively arranged at both ends of the support cross beam 1. The first steel plate force application device includes a first hinge seat 5 vertically connected to the support cross beam 1 and symmetrically arranged first upper inclined supports 8 and first lower inclined supports 9. The first hinge seat 5 is arranged vertically, and the upper and lower ends of the first hinge seat 5 are respectively hinged to the first upper inclined support 8 and the first lower inclined support 9. The other ends of the first upper inclined support 8 and the first lower inclined support 9 are respectively hinged to a first support foot 12 and a second support foot 13 that are in contact with the retaining plate 2. A first driver capable of changing the flipping angles of the first upper inclined support 8 and the first lower inclined support 9 is arranged in the middle of the first hinge seat 5. The first driver changes the angle between the first upper inclined support 8 and the first lower inclined support 9.

[0031] Further, the first driver includes a first guide post 6 vertically connected to the first hinge seat 5, a first sliding sleeve 7 sleeved on the first guide post 6 and slidable along the length direction of the first guide post 6. First adjusting connecting rods 10 and second adjusting connecting rods 11 are respectively hinged to both sides of the first sliding sleeve 7. The other ends of the first adjusting connecting rod 10 and the second adjusting connecting rod 11 are respectively hinged to the first upper inclined support 8 and the first lower inclined support 9. It also includes a left side sleeve 14 inserted and connected to the end of the first guide post 6. A left side jack 15 is fixed to the end of the left side sleeve 14. A third support foot 16 is installed at the telescopic end of the left side jack 15. The right end of the left side sleeve 14 abuts against the first sliding sleeve 7. It is necessary to manually adjust the left side jack 15 to extend until the third support foot 16 abuts against the retaining plate 2. When the left side jack 15 continues to extend, the length of the first guide post 6 inserted into the left side sleeve 14 is increased. The left side sleeve 14 pushes the first sliding sleeve 7 to slide towards the first hinge seat 5. The first adjusting connecting rod 10 and the second adjusting connecting rod 11 respectively pull the first upper inclined support 8 and the first lower inclined support 9, so that the angle between the first upper inclined support 8 and the first lower inclined support 9 becomes smaller until the first support foot 12 and the second support foot 13 are in contact with the retaining plate 2. At this time, the first support foot 12, the second support foot 13 and the third support foot 16 simultaneously apply a thrust to the retaining plate 2 to ensure the soil retaining effect of the retaining plate 2.

[0032] Further, the cross section of the first guide post 6 is rectangular, and the inner holes of the first sliding sleeve 7 and the left side sleeve 14 are rectangular holes and are all slidably matched with the outer wall of the first guide post 6. While ensuring sliding, rotation is avoided.

[0033] Further, the second steel plate force application device includes a second hinge seat vertically connected to the support cross beam, and symmetrically arranged second upper inclined supports and second lower inclined supports. The second hinge seat is vertically arranged, and the upper and lower ends of the second hinge seat are respectively hinged to the second upper inclined support and the second lower inclined support. The other ends of the second upper inclined support and the second lower inclined support are respectively hinged with a fourth support foot and a fifth support foot that are in contact with the retaining plate. A second driver capable of changing the flipping angles of the second upper inclined support and the second lower inclined support is arranged in the middle of the second hinge seat, and the second driver changes the angle between the second upper inclined support and the second lower inclined support.

[0034] The operation mode of the second steel plate force application device is the same as that of the first steel plate force application device. The second steel plate force application device applies a thrust to the retaining plate 2 to ensure the retaining effect of the retaining plate 2.

[0035] Further, the second driver includes a second guide post vertically connected to the second hinge seat, and a second sliding sleeve sleeved on the second guide post and slidable along the length direction of the second guide post. Third adjustment connecting rods and fourth adjustment connecting rods are respectively hinged on both sides of the second sliding sleeve. The other ends of the third adjustment connecting rod and the fourth adjustment connecting rod are respectively hinged to the second upper inclined support and the second lower inclined support. It also includes a right side sleeve inserted and connected to the end of the second guide post. A right side jack is fixed at the end of the right side sleeve, and a sixth support foot is installed at the telescopic end of the right side jack. The left end of the right side sleeve abuts against the second sliding sleeve.

[0036] The operation mode of the second driver is the same as that of the first driver. The fourth support foot, the fifth support foot and the sixth support foot simultaneously apply a thrust to another group of retaining plates to ensure the retaining effect of the retaining plate 2.

[0037] Further, two groups of clamping plates are arranged at intervals on the first hinge seat 5. The end of the support cross beam 1 is located between the two groups of clamping plates and is connected by bolts, so that the first hinge seat 5 can be separated from the support cross beam 1, which is convenient for replacing support cross beams 1 with different lengths to be applicable to foundation pits of building projects with different widths.

[0038] Further, two groups of support legs 3 are arranged at intervals along the length direction of the support cross beam 1, which is convenient for the preliminary positioning of the support cross beam 1.

[0039] Further, two groups of lifting lugs 4 are arranged at intervals along the length direction of the support cross beam 1, which cooperate with a crane to realize the hoisting of the support cross beam 1.

[0040] Further, the retaining plate 2 is made of steel plate, and the retaining effect is stable.

[0041] For the safety protection device for building engineering foundation pits described in the present utility model, a support crossbeam with a suitable length is selected as needed, and the first steel plate force application device and the second steel plate force application device are assembled with the support crossbeam on-site. After the building engineering foundation pit is excavated and formed, the construction of the retaining plate is carried out first. At the same time, the support crossbeam and related components are transported into the foundation pit by a crane. The angle between the first upper inclined support and the first lower inclined support can be made smaller by using the first driver. After the first support foot and the second support foot are in contact with the retaining plate, a thrust is applied to the retaining plate to ensure the soil retaining effect of the retaining plate.

[0042] For the safety protection device for building engineering foundation pits described in the present utility model, it is necessary to manually adjust the left jack to extend until the third support foot abuts against the retaining plate. When the left jack continues to extend, the length of the first guide post inserted into the left sleeve is increased, and the left sleeve pushes the first sliding sleeve to slide towards the first hinge seat. The first adjustment link and the second adjustment link respectively pull the first upper inclined support and the first lower inclined support, making the angle between the first upper inclined support and the first lower inclined support smaller until the first support foot and the second support foot are in contact with the retaining plate. At this time, the first support foot, the second support foot and the third support foot simultaneously apply a thrust to the retaining plate to ensure the soil retaining effect of the retaining plate.

[0043] For the safety protection device for building engineering foundation pits described in the present utility model, two groups of clamping plates are arranged at intervals on the first hinge seat. The end of the support crossbeam is located between the two groups of clamping plates and is connected by bolts, so that the first hinge seat can be separated from the support crossbeam, which is convenient for replacing support crossbeams with different lengths to be applicable to building engineering foundation pits with different widths.

[0044] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

[0045] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art of this technology field.

Claims

1. A safety protection device for a foundation pit of a construction project, comprising two sets of retaining plates and a support assembly between the two sets of retaining plates for supporting the retaining plates, characterized in that: The support assembly includes a supporting beam, a supporting leg supported on the bottom of the pit is provided in the middle of the supporting beam, and a first steel plate force-applying device and a second steel plate force-applying device that abut against the corresponding earth retaining plate are respectively provided at two ends of the supporting beam, the first steel plate force-applying device includes a first hinge seat vertically connected to the supporting beam and a symmetrically arranged first upper inclined support and a first lower inclined support, the first hinge seat is vertically arranged, and the upper and lower ends of the first hinge seat are respectively hingedly connected to the first upper inclined support and the first lower inclined support, the other ends of the first upper inclined support and the first lower inclined support are respectively hingedly connected to the first supporting foot and the second supporting foot that abut against the earth retaining plate, a first driver that can change the flipping angle of the first upper inclined support and the first lower inclined support is provided in the middle of the first hinge seat, and the first driver changes the angle between the first upper inclined support and the first lower inclined support.

2. The safety protection device for foundation pit of construction engineering according to claim 1 is characterized in that: The first driver includes a first guide column vertically connected to the first hinge seat, a first sliding sleeve mounted on the first guide column and slidable along the length direction of the first guide column, a first adjusting link and a second adjusting link are hinged on both sides of the first sliding sleeve, the other ends of the first adjusting link and the second adjusting link are hingedly connected to the first upper inclined support and the first lower inclined support respectively, and also includes a left sleeve plug-in connected to the end of the first guide column, a left jack is fixed to the end of the left sleeve, a third supporting foot is installed at the telescopic end of the left jack, and the right end of the left sleeve is abutted against the first sliding sleeve.

3. The safety protection device for foundation pit of construction engineering according to claim 2 is characterized in that: The cross section of the first guide column is rectangular, and the inner holes of the first sliding sleeve and the left sleeve are rectangular holes, and both slide in cooperation with the outer wall of the first guide column.

4. The safety protection device for construction engineering foundation pit according to claim 3 is characterized in that: The second steel plate force application device includes a second hinged seat vertically connected to the supporting crossbeam and a symmetrically arranged second upper inclined support and a second lower inclined support. The second hinged seat is vertically arranged, and the upper and lower ends of the second hinged seat are respectively hingedly connected to the second upper inclined support and the second lower inclined support. The other ends of the second upper inclined support and the second lower inclined support are respectively hingedly connected to the fourth supporting foot and the fifth supporting foot abutting the retaining plate. A second driver capable of changing the flipping angle of the second upper inclined support and the second lower inclined support is arranged in the middle part of the second hinged seat, and the second driver changes the angle between the second upper inclined support and the second lower inclined support.

5. The safety protection device for foundation pit of construction engineering according to claim 4 is characterized in that: The second driver includes a second guide column vertically connected to the second hinge seat, a second sliding sleeve mounted on the second guide column and slidable along the length direction of the second guide column, a third adjusting link and a fourth adjusting link are hinged on both sides of the second sliding sleeve, the other ends of the third adjusting link and the fourth adjusting link are hingedly connected to the second upper inclined support and the second lower inclined support respectively, and also includes a right sleeve plugged in and connected to the end of the second guide column, a right jack is fixed to the end of the right sleeve, a sixth supporting foot is installed at the telescopic end of the right jack, and the left end of the right sleeve is abutted against the second sliding sleeve.

6. The safety protection device for foundation pit of construction engineering according to claim 5 is characterized in that: Two groups of clamping plates are arranged at intervals on the first hinge seat, and the end of the supporting crossbeam is located between the two groups of clamping plates and connected by bolts.

7. The safety protection device for foundation pit of construction engineering according to claim 6 is characterized in that: Two groups of supporting legs are arranged at intervals along the length direction of the supporting crossbeam.

8. The safety protection device for foundation pit of construction engineering according to claim 7 is characterized in that: Two groups of lifting ears are arranged at intervals along the length direction of the supporting crossbeam.

9. The safety protection device for foundation pit of construction engineering according to claim 8, characterized in that: The retaining plate is a steel plate.

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