Load box

Abstract

The utility model discloses a load box which comprises a lower connecting plate, an upper connecting plate and a loading unit, the loading unit comprises a shell, a piston plate and a piston rod, the shell is fixedly connected to the lower connecting plate, the piston rod is fixedly connected to the upper connecting plate, and the piston plate is located in the shell; a fixing block is arranged on the piston plate, two sets of fixing grooves are formed in the shell, and the two sets of fixing grooves are formed in the bottom and the top of the shell correspondingly; the foundation pile upper section pile can be well supported, and potential safety hazards after construction are reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of static load testing equipment for self-balancing piles of building foundations, and in particular relates to a load cell. Background Technology

[0002] A load cell is a specialized loading device used in the self-balancing method of pile foundation bearing capacity testing in the construction industry. It is a structural assembly of one or more jacks (pressure units). Load cells are generally classified into two types: those using sliding-sealed ordinary hydraulic cylinders (piston or plunger type) as working units, and those using cavity-sealed pressure units as working units.

[0003] In recent years, the self-balancing load cell technology has developed rapidly. Self-reaction load cells used for pile bearing capacity testing have been widely used, gradually replacing the surcharge testing originally used on construction sites, and the results have been excellent.

[0004] Most load cells are disposable and are not removed. After the self-reaction force balancing load cell is tested, the oil pressure in the load cell is usually released, causing the hydraulic oil inside the load cell to lose pressure and become unable to support the upper section of the foundation pile. This may cause problems such as later construction or building subsidence, leaving safety hazards. Utility Model Content

[0005] 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.

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a load cell.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a load box, including a lower connecting plate, an upper connecting plate and a loading unit, the loading unit including a shell, a piston plate and a piston rod, the shell being fixedly connected to the lower connecting plate, the piston rod being fixedly connected to the upper connecting plate, the piston plate being located inside the shell; a fixing block is provided on the piston plate, and a fixing groove is provided on the shell, the fixing groove being provided in two sets, the two sets of fixing grooves being respectively located at the bottom and top of the shell.

[0008] Furthermore, the housing is provided with protrusions, and the fixing groove is provided on the protrusions.

[0009] Furthermore, the piston plate is provided with a first movable groove, the fixed block is located in the first movable groove, and the fixed block is provided with a spring, one end of which is fixed to the inner wall of the first movable groove.

[0010] Furthermore, the piston plate is provided with a movable cavity, the movable cavity is provided with a movable plate, the movable plate is provided with a steel wire rope, and one end of the steel wire rope is fixed to the fixed block.

[0011] Furthermore, a second movable groove is provided at the bottom of the movable cavity, and a movable sleeve is provided in the second movable groove, with the movable plate abutting against the movable sleeve.

[0012] Furthermore, the movable sleeve is provided with a first slider, and the inner wall of the second movable groove is provided with a first groove for the first slider to move.

[0013] Furthermore, support blocks are provided on the inner wall of the active cavity.

[0014] Furthermore, a support rod is provided on the piston plate, with one end of the support rod rotatably connected to the piston plate.

[0015] Furthermore, a first connecting block is provided at the bottom of the piston plate, a second connecting block is provided at the bottom of the housing, one end of the support rod is rotatably connected to the first connecting block, and the other end is rotatably connected to the second connecting block; a second slider is provided on the second connecting block, and a second sliding groove is provided at the bottom of the housing for the second slider to move.

[0016] Furthermore, there are two sets of support rods, which are respectively located on the bottom sides of the piston plate; when the piston plate is at the bottom of the housing, the two sets of support rods are arranged crosswise.

[0017] The advantage of this utility model is that it provides a load box that provides support inside the load box and can effectively support the upper section of the foundation pile. Attached Figure Description

[0018] 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.

[0019] 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.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the load box in one embodiment of the present invention.

[0022] Figure 2 for Figure 1 Cross-sectional view of the load cell in the illustrated embodiment Figure 1 .

[0023] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0024] Figure 4 for Figure 1 Cross-sectional view of the load cell in the illustrated embodiment Figure 2 .

[0025] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0026] The meanings of the reference numerals in the figure are as follows:

[0027] 100. Lower connecting plate; 200. Upper connecting plate; 300. Loading unit; 301. Housing; 302. Piston rod; 303. Piston plate; 304. Protrusion; 305. Fixing groove; 306. Fixing block; 307. Spring; 308. Movable plate; 309. Support block; 310. Movable sleeve; 311. First slider; 312. First slide groove; 313. Steel wire rope; 314. Support rod; 315. First connecting block; 316. Second connecting block; 317. Second slider; 318. Second slide groove. Detailed Implementation

[0028] 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.

[0029] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0030] 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.

[0031] 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".

[0032] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0033] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1-5 As shown, a load cell includes a lower connecting plate 100, an upper connecting plate 200, and a loading unit 300. The loading unit 300 includes a housing 301, a piston plate 303, and a piston rod 302. The housing 301 is fixedly connected to the lower connecting plate 100, and the piston rod 302 is fixedly connected to the upper connecting plate 202. The piston plate 303 is located inside the housing 301. A fixing block 306 is provided on the piston plate 303, and a protrusion 304 is provided on the housing 301. The protrusion 304 has a fixing groove 305, which corresponds to the fixing block 306. The protrusion 304 has... Two sets of corresponding fixing grooves 305 are provided, with the two sets of fixing grooves 305 respectively located at the bottom and top of the shell 301; during transportation, the fixing block 306 is located in the fixing groove 305 at the bottom of the shell 301, providing the load box with a break-off function to prevent the load box from moving during transportation; after the load box is inspected, the fixing block 306 is located in the fixing groove 305 at the top of the shell 301, providing fixing force and support for the piston plate 303, thereby ensuring the load box's support force on the upper pile and reducing safety hazards after the project.

[0035] Specifically, the piston plate 303 is provided with a first movable groove, the fixing block 306 is located in the first movable groove, the fixing block 306 is provided with a spring 307, and one end of the spring 307 is fixed to the inner wall of the first movable groove.

[0036] The piston plate 303 is provided with a movable cavity, the movable cavity is provided with a movable plate 308, the inner wall of the movable cavity is provided with a support block 309, the movable plate 308 is provided with a steel wire rope 313, and one end of the steel wire rope 313 is fixedly connected to the fixed block 306.

[0037] The bottom of the movable cavity is provided with a second movable groove, and a movable sleeve 310 is provided in the second movable groove. The movable plate 308 abuts against the movable sleeve 310. A first slider 311 is provided on the movable sleeve 310, and a first sliding groove 312 is provided on the inner wall of the second movable groove for the first slider 311 to move. The first slider 311 and the first sliding groove 312 cooperate to limit the movement distance and trajectory of the movable sleeve 310, so that the movable sleeve 310 can still maintain the sealing of the second movable groove when it moves.

[0038] When hydraulic oil is injected into the housing 301 through the oil pipe, the hydraulic oil fills the bottom space of the housing 301 and enters the movable sleeve 310. The hydraulic oil pushes the movable sleeve 310 to move, and the movable sleeve 310 pushes the movable plate 308 to move. The wire rope 313 pulls the fixed block 306 to move into the first movable groove. The fixed block 306 disengages from the fixed groove 305 at the bottom of the housing 301. The hydraulic oil acts on the piston plate 303 to push the piston plate 303 to move for testing.

[0039] Furthermore, a support rod 314 is provided on the piston plate 303, and one end of the support rod 314 is rotatably connected to the piston plate 303.

[0040] Specifically, the piston plate 303 has a first connecting block 315 at the bottom, the housing 301 has a second connecting block 316 at the bottom, one end of the support rod 314 is rotatably connected to the first connecting block 315, and the other end is rotatably connected to the second connecting block 316; the second connecting block 316 has a second slider 317, and the housing 301 has a second groove 318 at the bottom for the second slider 317 to move.

[0041] There are two sets of support rods 314, which are respectively located on the bottom sides of the piston plate 303; when the piston plate 303 is at the bottom of the housing 301, the two sets of support rods 314 are arranged crosswise.

[0042] When the piston plate 303 is raised, it drives the support rod 314 to rotate. The support rod 314 then drives the second connecting block 316 to move. When the fixing block 306 moves to the fixing groove 305 at the top of the housing 301, the support rod 314 flips to a vertical position. The two sets of support rods 314 provide support force to the piston plate 303 from both sides of the piston plate 303. They cooperate with the fixing block 306 to fix the piston plate 303 at the top of the housing 301. Even if the hydraulic oil in the housing 301 is removed, the position of the piston plate 303 can be maintained, providing a good support effect for the upper pile and effectively reducing safety hazards after the project.

[0043] 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 utility model involved in the embodiments of this disclosure is not limited to the 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 features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A load cell, comprising a lower connecting plate, an upper connecting plate, and a loading unit, wherein the loading unit comprises a housing, a piston plate, and a piston rod, the housing being fixedly connected to the lower connecting plate, the piston rod being fixedly connected to the upper connecting plate, and the piston plate being located within the housing; characterized in that: The piston plate is provided with a fixing block, and the housing is provided with a fixing groove. There are two sets of fixing grooves, which are respectively located at the bottom and top of the housing.

2. The load cell of claim 1, wherein: The housing is provided with a protrusion, and the fixing groove is provided on the protrusion.

3. The load cell of claim 1, wherein: The piston plate is provided with a first movable groove, the fixed block is located in the first movable groove, and the fixed block is provided with a spring, one end of which is fixedly connected to the inner wall of the first movable groove.

4. The load cell of claim 3, wherein: The piston plate is provided with a movable cavity, the movable cavity is provided with a movable plate, and the movable plate is provided with a steel wire rope, one end of which is fixed to the fixed block.

5. The load cell of claim 4, wherein: The bottom of the movable cavity is provided with a second movable groove, and a movable sleeve is provided in the second movable groove. The movable plate abuts against the movable sleeve.

6. The load cell of claim 5, wherein: The movable sleeve is provided with a first slider, and the inner wall of the second movable groove is provided with a first groove for the first slider to move.

7. The load cell of claim 4, wherein: The inner wall of the movable cavity is provided with a support block.

8. The load cell according to claim 1, characterized in that: The piston plate is provided with a support rod, one end of which is rotatably connected to the piston plate.

9. The load cell of claim 8, wherein: The piston plate has a first connecting block at its bottom, and the housing has a second connecting block at its bottom. One end of the support rod is rotatably connected to the first connecting block, and the other end is rotatably connected to the second connecting block. The second connecting block has a second slider, and the housing has a second groove at its bottom for the second slider to move.

10. The load cell of claim 9, wherein: The support rods are provided in two sets, and the two sets of support rods are respectively provided on the bottom sides of the piston plate; when the piston plate is at the bottom of the housing, the two sets of support rods are arranged crosswise.

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