Simple load box with sealed guide structure

Abstract

The application discloses a simple load box with a sealed guide structure, and belongs to the field of load boxes. The simple load box comprises a lower plate, fixing columns, through holes, an upper plate, a hydraulic mechanism and a guide mechanism. The upper plate is fixedly connected to the lower plate through the fixing columns. The through holes are arranged on the axis positions of the lower plate and the upper plate. The guide mechanism is arranged on the upper side of the lower plate. The hydraulic mechanism is arranged on the upper side of the lower plate. The through holes vertically penetrate the upper plate and the lower plate and are used for passing through grouting pipes. The fixing columns are welded or fixed to the lower plate and the upper plate through threads. The hydraulic mechanism is used for injecting hydraulic oil to vertically push the lower plate and the upper plate, so that pile foundation detection work is carried out. The guide rods arranged in the guide mechanism are used for guiding the lower plate and the upper plate. The guide rods are sealed through the structure arranged in the guide mechanism, so that the guide rods are fixed by concrete and the lower plate and the upper plate when the guide rods contact the concrete during grouting before testing, and the guide rods cannot play a guiding role.

Description

Technical Field

[0001] This application relates to the field of load cells, and more specifically, to a simple load cell with a sealed guiding structure. Background Technology

[0002] The self-balancing load cell is suitable for vertical compressive static load tests and vertical tensile static load tests of bored piles, manually excavated piles, expanded diameter piles, long spiral piles, precast pipe piles, and steel pipe piles, as well as bearing capacity tests of deep foundations. During use, it is installed at the bottom or middle section of the foundation pile. The bearing capacity of the pile is tested by monitoring the deformation of the pile and the load cell during hydraulic pressurization. However, if there is no guiding structure during hydraulic pressurization, or if the guiding structure fails due to concrete solidification during grouting, the upper and lower plates of the load cell are prone to horizontal displacement during hydraulic pressurization, affecting the test results.

[0003] A simple load cell with a sealed guiding structure is now provided. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a simple load cell with a sealed guiding structure, including: a lower plate, A simple load cell with a sealed guiding structure also includes, The upper plate is fixedly connected to the lower plate by a number of fixing posts. The through hole is located at the axial position of the lower plate and the upper plate. Two guide mechanisms are provided on the upper side of the lower plate. Two hydraulic mechanisms are provided on the upper side of the lower plate. The through hole extends vertically through the upper plate and the lower plate, and the fixing post is welded or fixed to the lower plate and the upper plate by threads.

[0006] Furthermore, the guiding mechanism includes: The guide rod has two parts that are fixedly connected to the upper end face of the lower plate. The first sealing sleeve is fixedly connected to the lower end face of the upper plate. The first sealing cavity is located inside the first sealing sleeve. The upper end of the sealing plug slides into the first sealing cavity. The sealing cavity is located inside the sealing plug. The sealing ring is fixedly connected to the lower end face of the sealing plug. A sealing groove is provided on the sealing ring. The upper end of the guide rod penetrates the upper plate. The material and shape of the guide rod are set according to the actual bearing capacity required by the pile foundation and the test fluid pressure. The lower side of the sealing groove is open and the upper side is connected to the sealing plug cavity. The lower end face of the sealing ring is larger than the lower end face of the first sealing sleeve, so that when the upper end of the sealing plug is fitted into the first sealing cavity, the upper end face of the sealing ring is in close contact with the lower end face of the first sealing sleeve.

[0007] Furthermore, the guiding mechanism also includes: The sealing sleeve is fixedly connected to the upper end face of the lower plate. The positioning groove is located at the upper end of the sealing sleeve. The elastic ring plug is fitted into the positioning groove from the top and bottom. The sealing cavity is located within the sealing sleeve. The elastic ring plug is slidably connected to the sealing groove, the sealing cavity is connected to the sealing plug cavity, and the axis of the guide rod coincides with the axis of the sealing cavity.

[0008] Furthermore, the guiding mechanism also includes: The second sealing sleeve is fixedly connected to the upper end face of the upper plate. The second sealing cavity is located inside the second sealing sleeve. The second sealing cavity has an opening on its lower side that coincides with the axis of the guide rod that passes through the upper plate.

[0009] The diameter of the guide rod is smaller than the diameter of the sealing cavity, the sealing plug cavity, and the second sealing cavity.

[0010] Furthermore, the hydraulic mechanism includes: The hydraulic cylinder is fixedly connected to the upper end face of the lower plate. The hydraulic rod is located inside the hydraulic cylinder and its upper end is fixedly connected to the upper plate. The oil pipe is fixedly connected to the upper plate. The lower end of the oil pipe passes through the hydraulic rod and is located inside the hydraulic cylinder.

[0011] Furthermore, the two hydraulic cylinders are connected by a pipe.

[0012] Furthermore, a simple load cell with a sealed guiding structure also includes, The weight reduction groove is provided with four grooves located on the lower plate and the upper plate.

[0013] The beneficial effects of this application are as follows: It provides a simple load box with a sealed guiding structure, which guides the lower plate and the upper plate through the guide rod provided in the guiding mechanism, and seals the guide rod through the structure provided in the guiding mechanism, so as to prevent the guide rod from contacting the concrete and being fixed to the lower plate and the upper plate by the concrete during grouting before the test, thus preventing it from playing a guiding role. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0015] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0016] In the attached diagram: Figure 1 This is an overall schematic diagram based on an embodiment of this application; Figure 2 yes Figure 1 Top view; Figure 3 This is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the hydraulic mechanism; Figure 4 This is a structural schematic diagram of a part of an embodiment, mainly showing the first sealing sleeve structure; Figure 5 This is a structural schematic diagram of a part of an embodiment, mainly showing the sealing plug structure; Figure 6 This is a structural schematic diagram of a part of the embodiment, mainly showing the sealing sleeve structure.

[0017] Figure label: 11. Lower plate; 12. Fixed column; 13. Upper plate; 14. Hydraulic cylinder; 15. Hydraulic rod; 16. Oil pipe; 17. First sealing sleeve; 18. First sealing cavity; 19. Second sealing sleeve; 20. Hydraulic mechanism; 21. Second sealing cavity; 22. Sealing plug; 23. Sealing plug cavity; 24. Sealing groove; 25. Sealing sleeve; 26. Positioning groove; 27. Elastic ring plug; 28. Sealing cavity; 30. Guide mechanism; 31. Guide rod; 32. Through hole; 33. Weight reduction groove; 34. Sealing ring. Detailed Implementation

[0018] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0019] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0020] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0021] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0022] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Reference Figures 1-6 A simple load cell with a sealed guiding structure includes: a lower plate 11, fixed columns 12, through holes 32, an upper plate 13, a hydraulic mechanism 20, and a guiding mechanism 30. The upper plate 13 is fixedly connected to the lower plate 11 by several fixed columns 12. The through holes 32 are located at the axial position of the lower plate 11 and the upper plate 13. Two guiding mechanisms 30 are located on the upper side of the lower plate 11, and two hydraulic mechanisms 20 are located on the upper side of the lower plate 11. The through holes 32 penetrate the upper plate 13 and the lower plate 11 vertically for grouting pipes to pass through. The fixed columns 12 are welded or fixed to the lower plate 11 and the upper plate 13 by threads. The hydraulic mechanism 20 is used to inject hydraulic oil to push the lower plate 11 and the upper plate 13 up and down, thereby performing pile foundation testing.

[0024] The guiding mechanism 30 includes: a first sealing sleeve 17, a first sealing cavity 18, a sealing plug 22, a sealing ring 34, a sealing plug cavity 23, a sealing groove 24, a sealing tube sleeve 25, a positioning groove 26, an elastic ring plug 27, a sealing tube cavity 28, and a guide rod 31. The guide rod 31 has two parts fixedly connected to the upper end face of the lower plate 11. The first sealing sleeve 17 is fixedly connected to the lower end face of the upper plate 13. The first sealing cavity 18 is located inside the first sealing sleeve 17. The upper end of the sealing plug 22 slides into the first sealing cavity 18. The sealing plug cavity 23 is located inside the sealing plug 22. The sealing ring 34 is fixedly connected to the lower end face of the sealing plug 22. The sealing groove 24 is located in the sealing tube cavity 28. Ring 34, wherein the upper end of the guide rod 31 passes through the upper plate 13, and the guide rod 31 can guide the movement of the lower plate 11 and the upper plate 13 under force to avoid horizontal displacement. The material and shape of the guide rod 31 are set according to the actual bearing capacity required by the pile foundation and the test fluid pressure. The sealing groove 24 is open on the lower side and communicates with the sealing plug cavity 23 on the upper side. The lower end face of the sealing ring 34 is larger than the lower end face of the first sealing sleeve 17, so that when the upper end of the sealing plug 22 is fitted into the first sealing cavity 18, the upper end face of the sealing ring 34 is in close contact with the lower end face of the first sealing sleeve 17, preventing concrete from entering the first sealing cavity 18 during grouting.

[0025] The guiding mechanism 30 further includes: a sealing sleeve 25, a positioning groove 26, an elastic ring plug 27, and a sealing cavity 28. The sealing sleeve 25 is fixedly connected to the upper end face of the lower plate 11. The positioning groove 26 is provided at the upper end of the sealing sleeve 25. The elastic ring plug 27 is fitted into the positioning groove 26. The sealing cavity 28 is provided in the sealing sleeve 25. The elastic ring plug 27 is slidably connected to the sealing groove 24. By sliding the elastic ring plug 27 into the sealing groove 24, concrete can be prevented from entering the sealing cavity 28 during grouting. The sealing cavity 28 is connected to the sealing plug cavity 23. The axis of the guide rod 31 coincides with the axis of the sealing cavity 28.

[0026] The guiding mechanism 30 further includes a second sealing sleeve 19 and a second sealing cavity 21. The second sealing sleeve 19 is fixedly connected to the upper end face of the upper plate 13, and the second sealing cavity 21 is located inside the second sealing sleeve 19. The lower side of the second sealing cavity 21 is open and coincides with the axis of the guide rod 31 that passes through the upper plate 13. The second sealing sleeve 19 can prevent concrete from contacting and solidifying on the guide rod 31 during grouting, thus preventing the guide rod 31 from failing its guiding function.

[0027] The diameter of the guide rod 31 is smaller than the diameter of the sealing cavity 28, the sealing plug cavity 23, and the second sealing cavity 21.

[0028] The hydraulic mechanism 20 includes a hydraulic cylinder 14, a hydraulic rod 15, and an oil pipe 16. The hydraulic cylinder 14 is fixedly connected to the upper end face of the lower plate 11. The hydraulic rod 15 is disposed inside the hydraulic cylinder 14 and its upper end is fixedly connected to the upper plate 13. The oil pipe 16 is fixedly connected to the upper plate 13. The lower end of the oil pipe 16 passes through the hydraulic rod 15 and is located inside the hydraulic cylinder 14. Hydraulic oil is injected through the oil pipe 16, which can push the hydraulic rod 15 and the lower plate 11 to move vertically, thereby performing detection work.

[0029] The two hydraulic cylinders 14 are connected by a pipe.

[0030] The load box also includes four weight reduction grooves 33 provided on the lower plate 11 and the upper plate 13, wherein the weight reduction grooves 33 are used to reduce the weight of the lower plate 11 and the upper plate 13.

[0031] Work or installation process: Before use, the user first fixes the column cage to the lower plate 11 and the upper plate 13 respectively, inserts the concrete guide pipe through the through hole 32, and connects the oil pipe 16 to the hydraulic press. In use, the column cage, lower plate 11, and upper plate 13 are inserted into the pre-drilled pile foundation hole, and grouting is carried out through the concrete guide pipe. During grouting, the elastic ring plug 27 and the sealing groove 24 cooperate to prevent concrete from entering the sealing cavity 28, the sealing plug 22 and the first sealing cavity 18 cooperate to prevent concrete from entering the sealing plug cavity 23, and the second sealing sleeve 19 prevents concrete from entering the second sealing cavity 21, thus achieving a seal and avoiding affecting the guiding function of the guide rod 31. During testing, hydraulic oil is injected into the oil pipe 16 by a hydraulic press, which can apply vertical pressure to the upper plate 13 and the lower plate 11. The bearing capacity of the pile foundation is then tested by the amount of pile deformation under pressure and the amount of displacement of the upper plate 13 and the lower plate 11. The guide rod 31 can guide the displacement of the upper plate 13 and the lower plate 11 to avoid horizontal displacement from affecting the test results. After the test was completed, concrete was injected into the second sealing sleeve 19 for grouting reinforcement, so that the experimental pile foundation met the usage requirements.

[0032] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A simple load cell with a sealed guiding structure, comprising: Lower plate (11) Its features are: A simple load cell with a sealed guiding structure also includes, The upper plate (13) is fixedly connected to the lower plate (11) by a number of fixing posts (12). A through hole (32) is provided at the axial position of the lower plate (11) and the upper plate (13). The guide mechanism (30) has two parts located on the upper side of the lower plate (11). The hydraulic mechanism (20) has two parts located on the upper side of the lower plate (11). The through hole (32) extends through the upper plate (13) and the lower plate (11) vertically, and the fixing post (12) is welded or fixed to the lower plate (11) and the upper plate (13) by threads.

2. A simplified load cell with a sealed guiding structure according to claim 1, characterized in that: The guiding mechanism (30) includes, The guide rod (31) has two parts that are fixedly connected to the upper end face of the lower plate (11). The first sealing sleeve (17) is fixedly connected to the lower end face of the upper plate (13). The first sealing cavity (18) is located inside the first sealing sleeve (17). The upper end of the sealing plug (22) slides into the first sealing cavity (18). The sealing cavity (23) is located inside the sealing plug (22). The sealing ring (34) is fixedly connected to the lower end face of the sealing plug (22). A sealing groove (24) is provided on the sealing ring (34). The upper end of the guide rod (31) passes through the upper plate (13). The material and shape of the guide rod (31) are set according to the actual bearing capacity required by the pile foundation and the test liquid pressure. The lower side of the sealing groove (24) is open and the upper side is connected to the sealing plug cavity (23). The lower end face of the sealing ring (34) is larger than the lower end face of the first sealing sleeve (17), so that when the upper end of the sealing plug (22) is fitted into the first sealing cavity (18), the upper end face of the sealing ring (34) is close to the lower end face of the first sealing sleeve (17).

3. A simplified load cell with a sealed guiding structure according to claim 2, characterized in that: The guiding mechanism (30) also includes, The sealing sleeve (25) is fixedly connected to the upper end face of the lower plate (11). The positioning groove (26) is provided at the upper end of the sealing sleeve (25). The elastic ring plug (27) is fitted into the positioning groove (26) from the top and bottom. The sealing cavity (28) is provided in the sealing sleeve (25). The elastic ring plug (27) is slidably connected to the sealing groove (24), the sealing cavity (28) is connected to the sealing plug cavity (23), and the axis of the guide rod (31) coincides with the axis of the sealing cavity (28).

4. A simplified load cell with a sealed guiding structure according to claim 3, characterized in that: The guiding mechanism (30) also includes, The second sealing sleeve (19) is fixedly connected to the upper end face of the upper plate (13). The second sealing cavity (21) is located inside the second sealing sleeve (19). The second sealing cavity (21) has an opening on its lower side and coincides with the axis of the guide rod (31) that passes through the upper plate (13).

5. A simplified load cell with a sealed guiding structure according to claim 4, characterized in that: The diameter of the guide rod (31) is smaller than the diameter of the sealing cavity (28), the sealing plug cavity (23), and the second sealing cavity (21).

6. A simplified load cell with a sealed guiding structure according to claim 1, characterized in that: The hydraulic mechanism (20) includes, The hydraulic cylinder (14) is fixedly connected to the upper end face of the lower plate (11). The hydraulic rod (15) is located inside the hydraulic cylinder (14) and its upper end is fixedly connected to the upper plate (13). The oil pipe (16) is fixedly connected to the upper plate (13). The lower end of the oil pipe (16) passes through the hydraulic rod (15) and is located inside the hydraulic cylinder (14).

7. A simplified load cell with a sealed guiding structure according to claim 6, characterized in that: The two hydraulic cylinders (14) are connected by a pipe.

8. A simplified load cell with a sealed guiding structure according to claim 1, characterized in that: A simple load cell with a sealed guiding structure also includes, The weight reduction groove (33) is provided with four on the lower plate (11) and the upper plate (13).

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