Auxiliary device for cutting concrete sample

Abstract

The utility model relates to the technical field of concrete cutting machines, and discloses an auxiliary device for cutting a concrete sample, which aims to solve the problem that the test result of a test piece is influenced by the excursion and rigid constraint of the test piece in the cutting of the concrete test piece in the prior art, and comprises a cutting frame, and guide grooves are symmetrically formed in the top surface of the cutting frame; a group of positioning frames for limiting a test piece are slidably mounted in the guide groove, a plurality of guide openings are formed in the positioning frames, guide blocks are slidably mounted in the guide openings, clamping rods are fixed to the top surfaces of the guide blocks, and supporting springs are fixedly mounted between the guide blocks and the inner walls of the guide openings. The problem that a cutting machine is difficult to adapt to concrete in different shapes is effectively solved; and the structure of the clamp is improved, so that the influence on the sample in the cutting process is reduced, the test precision is improved, and the clamp has the characteristics of high efficiency, low loss, time saving, labor saving and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete cutting machines, and particularly relates to an auxiliary device for cutting concrete specimens. Background Art

[0002] In recent years, the road industry in China has developed rapidly, with more new road construction and maintenance, and the detection of concrete is particularly important. At present, the concrete specimens for on-site sampling and indoor testing need to be cut and adjusted in size before the test to meet the test requirements.

[0003] However, the existing cutting machine devices have the following problems during the cutting process:

[0004] The problem of specimen offset is likely to occur, affecting the test results.

[0005] In addition, the force on the specimen during the cutting process is also relatively large. The existing cutting device uses rigid constraints, which is equivalent to applying a pre-pressure to the specimen and cannot release the micro-deformation generated, which will also have an adverse impact on the test results of the specimen. (Such as the cutting device for concrete block processing disclosed in CN202322937540.X), and the above technical problems cannot be solved by the existing technology. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problems of specimen offset and the influence of rigid constraints on the test results of specimens existing in the cutting of concrete specimens in the prior art, and provides an auxiliary device for cutting concrete specimens.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An auxiliary device for cutting concrete specimens, including a cutting frame, symmetric guiding grooves are opened on the top surface of the cutting frame, a set of positioning frames for limiting specimens are slidably installed in the guiding grooves, a plurality of guiding openings are opened on the positioning frames, guiding blocks are slidably installed in the guiding openings, clamping rods are fixed on the top surfaces of the guiding blocks, and supporting springs are fixedly installed between the guiding blocks and the inner walls of the guiding openings.

[0009] Further, a rubber sheet is fixed at one end of the clamping rod away from the guiding block.

[0010] Further, limiting plates are installed on both sides of the guiding groove, a plurality of limiting holes are provided on the limiting plates, and the limiting holes and the side parts of the positioning frame are connected by limiting bolts.

[0011] Further, scale lines are provided on the limiting plates.

[0012] Further, one side of the guiding block is connected with a limiting block, and a through hole is provided on the limiting block. A number of limiting holes adapted to the through holes on the limiting block are provided near the guiding opening on the positioning frame, and a limiting pin is installed in the limiting holes and the through holes.

[0013] Further, protective frames are provided at the edges of the cutting frame.

[0014] Further, the surface of the rubber sheet in contact with the specimen is an arc surface.

[0015] The utility model has the following beneficial effects compared with the prior art:

[0016] Through the design of the guiding frame and the clamping rod, the device of the utility model can be flexibly adjusted according to the shape and size of the concrete test block, ensuring that the clamping rod is in close contact with different positions of the test block, so as to realize efficient and stable clamping, solve the problem of core sample deviation caused by uneven stress of the test block, and make the cutting size of the concrete test block more accurate.

[0017] The utility model adopts a mechanism combining a clamping rod and a limiting block. The clamping rod ensures the basic stability of the test block, while the limiting block and the limiting pin further enhance the stability of the clamping, effectively avoiding the shaking of the test block during the cutting process and ensuring the stability of the guiding frame during the cutting process. The arc structure of the rubber pad of the utility model adopts elastic constraint, which can make the high-damping rubber pad fit with the specimen to the greatest extent, effectively improve the clamping effect of the fixture on the specimen, avoid the problem of core sample deviation caused by uneven stress, and release the micro-deformation generated by the specimen.

[0018] The utility model effectively solves the problem that it is difficult for the cutting machine to adapt to different shapes of concrete; it also improves the structure of the fixture, adopts elastic constraint, reduces the influence on the specimen during the cutting process, and improves the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the utility model.

[0020] Figure 2 is a schematic structural diagram of one direction of the guiding frame of the utility model.

[0021] Figure 3 is a schematic structural diagram of another direction of the guiding frame of the utility model.

[0022] Figure 4 is the utility model Figure 3 partial enlarged schematic diagram.

[0023] The meanings of the reference numerals are as follows: 1. cutting frame; 2. connecting arm; 3. cutting machine body; 4. positioning frame; 5. limiting block; 6. limiting hole; 7. limiting pin; 8. guiding port; 9. guiding block; 10. clamping rod; 11. vertical plate; 12. rubber sheet; 13. guiding groove; 14. limiting bolt; 15. scale line; 16. control panel; 17. supporting spring; 18. limiting plate; 19. protective frame. Detailed implementation manners

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation manners. Embodiment

[0025] As Figure 1-2 shown, a cutting assistance device for concrete specimens includes a cutting frame 1. Protective frames 19 are provided at the edges of the cutting frame 1. A vertical plate 11 is fixed on one side of the top of the cutting frame 1. A connecting arm 2 is further provided on the vertical plate 11. A cutting machine body 3 is installed at the end of the connecting arm 2 away from the vertical plate 11. A control panel 16 is provided on the vertical plate 11. (The connecting arm 2 can slide back and forth, left and right on the vertical plate 11. The control panel 16 is used to control the opening and closing of the cutting machine body 3 and the sliding of the connecting arm 2. This part is prior art and not an innovation point of this patent)

[0026] Guiding grooves 13 are symmetrically formed on the top surface of the cutting frame 1. A positioning frame 4 for limiting specimens is slidably installed in the guiding grooves 13. Limiting plates 18 (the limiting plates 18 are welded to the cutting frame 1) are installed on both sides of the guiding grooves 13. Scale lines 15 are provided on the limiting plates 18 and can be used to measure the size of the specimens. A plurality of limiting holes (the spacing between the plurality of limiting holes can be set to be relatively dense) are provided on the limiting plates 18. The limiting holes are connected to the side part of the positioning frame 4 through limiting bolts 14. A plurality of guiding ports 8 are formed on the positioning frame 4. A guiding block 9 is slidably installed in the guiding ports 8. A clamping rod 10 is welded and fixed to the top surface of the guiding block 9. A rubber sheet 12 is fixed at the end of the clamping rod 10 away from the guiding block 9. A supporting spring 17 is fixedly installed between the guiding block 9 and the inner wall of the guiding port 8.

[0027] In this embodiment, the surface of the rubber sheet 12 in contact with the specimen is an arc surface.

[0028] In use, a concrete test block can be placed at a position on the top surface of the cutting frame 1 between the two guiding frames 4. Subsequently, the guiding frames 4 can be pushed to slide along the guiding grooves 13. As the two guiding frames 4 slide, when the clamping rods 10 on the guiding frames 4 come into contact with the concrete test block, according to the shape of the concrete test block, the clamping rods 10 at different positions can contact different positions of the concrete test block, and the guiding blocks 9 can be driven to slide in the guiding openings 8 according to the positions, so that the clamping rods 10 can be tightened against the concrete test block, ensuring the stability of the concrete test block. After clamping the test piece, the limit bolt 14 is screwed into the limit plate 18 to lock the position of the guiding frame 4, and then the concrete test block can be cut. Embodiment

[0029] Based on Embodiment 1, in this embodiment, a limit block 5 is welded to one side of the top of the guiding block 9. A through hole is provided on the limit block 5, and a number of limit holes 6 adapted to the through holes on the limit block 5 are provided on the positioning frame 4 near the guiding opening 8. The limit holes 6 and the through holes are used to install a limit pin 7.

[0030] In this embodiment, after locking the position of the guiding frame 4, to prevent possible displacement during the cutting process, after the limit pin 7 is inserted into the through hole on the limit block 5 and the limit hole 6, the positions of the guiding block 9 and the clamping rod 10 are limited, so that the rubber sheet 12 on the clamping rod 10 is tightened against the test piece, and displacement during the cutting process can be avoided.

Claims

1. A concrete sample cutting auxiliary device, comprising a cutting frame (1), characterized in that: The top surface of the cutting frame (1) is symmetrically provided with guide grooves (13), a group of positioning frames (4) for limiting the position of the test piece are slidably installed in the guide grooves (13), a plurality of guide openings (8) are provided on the positioning frame (4), a guide block (9) is slidably installed in the guide opening (8), a clamping rod (10) is fixed to the top surface of the guide block (9), a rubber sheet (12) is fixed to the end of the clamping rod (10) away from the guide block (9), and a support spring (17) is fixedly installed between the guide block (9) and the inner wall of the guide opening (8).

2. A concrete sample cutting auxiliary device according to claim 1, characterized in that: Limiting plates (18) are installed on both sides of the guide groove (13), and a plurality of limiting holes are provided on the limiting plates (18). The limiting holes are connected to the side of the positioning frame (4) via limiting bolts (14).

3. The concrete sample cutting auxiliary device according to claim 2 is characterized in that: The limit plate (18) is provided with scale lines (15).

4. A concrete sample cutting auxiliary device according to claim 1 or 3, characterized in that: One side of the guide block (9) is connected to a limit block (5), and a through hole is provided on the limit block (5). A plurality of limit holes (6) matching the through holes on the limit block (5) are provided on the positioning frame (4) near the guide opening (8), and the limit holes (6) and the through holes are used to install limit pins (7).

5. The concrete sample cutting auxiliary device according to claim 4 is characterized in that: The edges of the cutting frame (1) are each provided with a protective frame (19).

6. The concrete sample cutting auxiliary device according to claim 1 is characterized in that: The surface of the rubber sheet (12) in contact with the test piece is an arc-shaped surface.

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