Concrete surface crack grinding angle grinder

Abstract

The utility model relates to the field of concrete angle grinders, and discloses a concrete surface crack grinding angle grinder which comprises a telescopic rod, an angle grinding assembly is hinged to the upper end of the telescopic rod, a hinge block is connected to the lower end of the angle grinding assembly in a sliding mode, an inner rod is hinged to the middle of the hinge block, and a positioning groove is connected to the outer portion of the inner rod in a sliding mode. A telescopic assembly is slidably connected into the positioning groove, a connecting block is fixedly connected to the lower portion of the positioning groove, a sliding ring is fixedly connected to the left portion of the connecting block, and two clamping rods are slidably connected into the connecting block. The clamping rods at the two ends are pressed to be retracted into the connecting blocks, the connecting blocks can slide to drive the fixing grooves and the inner rods to slide, so that the hinge blocks can extrude the main body to rotate for angle adjustment, repeated lifting is not needed, and the main body can be at a labor-saving angle when used for lifting.

Description

Technical Field

[0001] The utility model relates to the field of concrete angle grinders, in particular to an angle grinder for grinding cracks on concrete surfaces. Background Art

[0002] Cracks may appear in concrete during use. These cracks not only affect the appearance, but may also affect the performance and durability of the concrete. Therefore, cracks on the concrete surface need to be repaired and treated to ensure the safety and stability of the structure.

[0003] After searching, Chinese patent announcement number: CN208961712U discloses a telescopic handle angle grinder, comprising an angle grinder body (1) and a handle (2), wherein the handle (2) is a telescopic rod, comprising an inner rod (21) and an outer cylinder (22) matched therewith, the depth of the outer cylinder (22) is less than the length of the inner rod (21), and the outer cylinder (22) slides linearly along the axial direction of the inner rod (21) for linearly adjusting the length of the telescopic rod; the inner rod (21) and the outer cylinder (22) are locked and fixed by a fastener (23); the extended end of the inner rod (21) is fixedly connected to the side or tail of the angle grinder body (1); the utility model effectively solves the problem that it is difficult to grind the concrete surface of the roof of a building and a high wall with an existing angle grinder due to its high height.

[0004] In the above technology, although the height can be adjusted to facilitate lifting the angle grinder body to different positions for grinding cracks, when using it, it is necessary to first slide the body down to a suitable height for adjusting the angle, then fix the body, and then lift it again. This method makes the operation more complicated and not conducive to use. Therefore, a concrete surface crack grinding angle grinder is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides an angle grinder for grinding cracks on a concrete surface, aiming to improve the problem of complicated angle adjustment in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an angle grinder for grinding cracks on a concrete surface, comprising a telescopic rod, the upper end of the telescopic rod is hinged with an angle grinding assembly, the lower end of the angle grinding assembly is slidably connected with a hinge block, the middle of the hinge block is hinged with an inner rod, the outer part of the inner rod is slidably connected with a positioning groove, the inner part of the positioning groove is slidably connected with the telescopic assembly, the lower part of the positioning groove is fixedly connected with a connecting block, the left part of the connecting block is fixedly connected with a sliding ring, the inner part of the connecting block is slidably connected with a clamping rod, the clamping rod is provided with two groups, and the two groups of clamping rods are elastically connected by a spring.

[0007] As a further description of the above technical solution:

[0008] The telescopic assembly comprises a card block, which is provided with two groups. The two groups of card blocks are elastically connected via a second spring. The outside of the card block contacts a release rod, and the middle of the release rod is slidably connected with a T-shaped block.

[0009] As a further description of the above technical solution:

[0010] The angle grinding assembly comprises an articulated seat, the upper end of which is fixedly connected to a main body, and the lower part of which is hinged inside the upper end of a telescopic rod.

[0011] As a further description of the above technical solution:

[0012] The upper part of the hinge block is slidably connected to the inside of the lower end of the main body, and the outer parts of the connection block and the sliding ring are both slidably connected to the inside of the lower end of the telescopic rod.

[0013] As a further description of the above technical solution:

[0014] The left end of the clamping rod is slidably connected to the inside of the lower end of the telescopic rod, and the two ends of the spring 1 are respectively fixedly connected to the outside of the side ends of the two groups of clamping rods.

[0015] As a further description of the above technical solution:

[0016] The outside of the clamping block is slidably connected to the inside of the lower end of the inner rod and the inside of the positioning groove, and the two ends of the second spring are respectively fixedly connected to the outside of the side ends of the two groups of clamping blocks.

[0017] As a further description of the above technical solution:

[0018] The side portion of the release rod is slidably connected inside the side end of the positioning groove.

[0019] As a further description of the above technical solution:

[0020] The side portion of the T-block is fixedly connected to the outside of the side end of the positioning groove.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by pressing the clamping rods at both ends to retract them into the interior of the connecting block, the connecting block can be slid to drive the fixed groove and the inner rod to slide so that the hinge block can be squeezed to rotate the main body for angle adjustment, so there is no need for repeated lifting, and it can be at a more labor-saving angle when lifted for use.

[0023] 2. In the utility model, by pressing the release rods at both ends, the inner rod can slide relative to the fixed groove, so that the telescopic rod can slide easily when adjusting the height, thereby increasing the simplicity of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main body of an angle grinder for grinding cracks on a concrete surface proposed by the utility model;

[0025] Figure 2 A schematic diagram of an angle grinding assembly of an angle grinder for grinding cracks on a concrete surface proposed by the utility model;

[0026] Figure 3 A schematic cross-sectional view of a telescopic rod of an angle grinder for grinding cracks on a concrete surface proposed by the utility model;

[0027] Figure 4 A schematic diagram of an inner rod of an angle grinder for grinding cracks on a concrete surface proposed by the utility model;

[0028] Figure 5 A schematic diagram of a clamping rod of an angle grinder for grinding cracks on a concrete surface proposed by the utility model;

[0029] Figure 6 The utility model is a schematic diagram of a clamping block of an angle grinder for grinding cracks on a concrete surface.

[0030] Legend:

[0031] 1. Telescopic rod; 2. Connecting block; 3. Main body; 4. Inner rod; 5. Positioning groove; 6. Sliding ring; 7. Articulated seat; 8. Articulated block; 9. Release rod; 10. T-block; 11. Clamping rod; 12. Spring 1; 13. Clamping block; 14. Spring 2. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: an angle grinder for grinding cracks on a concrete surface, comprising a telescopic rod 1, the telescopic rod 1 can be adjusted in height by telescoping, and a threaded hole is provided at the side end, so that the bolt can clamp and fix it to a fixed height, the upper end of the telescopic rod 1 is hinged with an angle grinding assembly, and the angle grinding assembly comprises an articulated seat 7, the articulated seat 7 limits the main body 3 to be able to rotate only relative to the telescopic rod 1, the upper end of the articulated seat 7 is fixedly connected with the main body 3, the main body 3 is the angle grinder body, and can grind concrete cracks for convenient filling and repairing, the lower part of the articulated seat 7 is hinged inside the upper end of the telescopic rod 1, and the lower end of the angle grinding assembly slides It is connected with an articulated block 8, which is T-shaped and is restricted by the main body 3 to only slide relatively horizontally within a fixed distance. The upper part of the articulated block 8 is slidably connected to the inside of the lower end of the main body 3. The middle of the articulated block 8 is hinged with an inner rod 4, and the inner rod 4 is L-shaped, which can facilitate the main body 3 to rotate to a predetermined angle. The outer sliding connection of the inner rod 4 is provided with a positioning groove 5, and the positioning groove 5 can limit the position of the inner rod 4 so that it can only slide relatively vertically within a fixed distance. The vertical sliding of the inner rod 4 can squeeze the articulated block 8 to slide inside the main body 3 so that the main body 3 can rotate to adjust the angle, thereby eliminating the need to repeatedly lift the main body 3 and increasing the ease of operation.

[0034] Reference Figure 1 , Figure 3 and Figure 5 The inner sliding connection of the positioning groove 5 is provided with a telescopic assembly, and the lower part of the positioning groove 5 is fixedly connected with a connecting block 2. The connecting block 2 can limit the relative fixation of the positioning groove 5. The outer parts of the connecting block 2 and the sliding ring 6 are both slidably connected to the lower end of the telescopic rod 1. The connecting block 2 and the sliding ring 6 are limited by the telescopic rod 1 to only slide vertically so that the positioning groove 5 can slide up and down to drive the inner rod 4 to slide so that the angle of the main body 3 can be adjusted. The left part of the connecting block 2 is fixedly connected with the sliding ring 6. The inner sliding connection of the connecting block 2 is provided with a clamping rod 11. The clamping rod 11 is U-shaped, and the connecting block 2 can be clamped at different positions to make the angle of the main body 3 different. The clamping rod 11 is provided with two groups. The two groups of clamping rods 11 are elastically connected by a spring 12. The spring 12 squeezes the clamping rods 11 at both ends so that the clamping rods 11 at both ends can slide out and be fixed in a clamping state. The outer left end of the clamping rod 11 is slidably connected to the lower end of the telescopic rod 1, and the two ends of the spring 12 are respectively fixedly connected to the outer side ends of the two groups of clamping rods 11.

[0035] Reference Figure 1 , Figure 4 and Figure 6The telescopic assembly includes a card block 13, which can be clamped at different positions inside the positioning groove 5 so that the inner rod 4 is fixed relative to the positioning groove 5 and slides up and down at the same time. The outer side of the card block 13 is slidably connected to the lower end of the inner rod 4 and the inner side of the positioning groove 5. The card block 13 can limit the position of the inner rod 4. The card block 13 is provided with two groups, and the two groups of card blocks 13 are elastically connected by a spring 14. The spring 14 can squeeze to fix the card block 13 in a clamped state. The two ends of the spring 14 are respectively fixedly connected to the two groups of card blocks 1 3, the outside of the block 13 is in contact with the release rod 9, the release rod 9 is composed of a long rod and a plurality of blocks fixed at the side ends. The blocks are squeezed to make the block 13 slide into the inner rod 4 to release the limit, so that the inner rod 4 can slide with the telescopic rod 1, and the side of the release rod 9 is slidably connected to the inside of the side end of the positioning groove 5, and the middle inside of the release rod 9 is slidably connected with a T-block 10, which limits the release rod 9 to slide horizontally only within a fixed distance, and the side of the T-block 10 is fixedly connected to the outside of the side end of the positioning groove 5.

[0036] Working principle: Press the release rod 9 at both ends to make the block squeeze the card block 13 to slide into the inner rod 4 to squeeze the spring 2 14, then slide the telescopic rod 1, the telescopic rod 1 drives the upper end hinge seat 7 to slide up, the hinge seat 7 drives the main body 3 to slide up, the main body 3 drives the hinge block 8 to slide up, the hinge block 8 slides up and drives the inner rod 4 to slide up to a suitable height and then release the release rod 9. At this time, the spring 2 14 squeezes the card blocks 13 at both ends to slide into the positioning groove 5 so that the release rod 9 slides outward until it is restricted by the T-block 10 and cannot slide, and then the bolts are rotated and clamped at the same time to make the telescopic rod 1 is fixed, and then the clamping rod 11 is squeezed toward the middle, the clamping rod 11 slides into the interior of the connecting block 2, squeezing the spring 12, and then the connecting block 2 is slid up and down, the connecting block 2 drives the sliding ring 6 and the positioning groove 5 to slide up and down, the positioning groove 5 drives the clamping block 13 and the inner rod 4 to slide up and down, and the inner rod 4 drives the hinge block 8 to slide up and down. At this time, the main body 3 is squeezed and rotated to a suitable position along the center of the side end of the hinge seat 7, and then the clamping rod 11 is released. At this time, the spring 12 squeezes the clamping rods 11 at both ends to slide into the lower part of the telescopic rod 1 to fix it, and the main body 3 is started for grinding.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An angle grinder for grinding cracks on a concrete surface, comprising a telescopic rod (1), characterized in that: The upper end of the telescopic rod (1) is hinged with an angle grinding assembly, the lower end of the angle grinding assembly is slidably connected with a hinge block (8), the middle of the hinge block (8) is hinged with an inner rod (4), the outer part of the inner rod (4) is slidably connected with a positioning groove (5), the inner part of the positioning groove (5) is slidably connected with the telescopic assembly, the lower part of the positioning groove (5) is fixedly connected with a connecting block (2), the left part of the connecting block (2) is fixedly connected with a sliding ring (6), the inner part of the connecting block (2) is slidably connected with a clamping rod (11), the clamping rod (11) is provided with two groups, and the two groups of clamping rods (11) are elastically connected by a spring (12).

2. The angle grinder for grinding cracks on concrete surface according to claim 1, characterized in that: The telescopic assembly comprises a clamping block (13), wherein the clamping block (13) is provided with two groups, and the two groups of the clamping blocks (13) are elastically connected via a second spring (14); the outside of the clamping block (13) contacts a release rod (9), and the middle of the release rod (9) is slidably connected to a T-shaped block (10).

3. The angle grinder for grinding cracks on concrete surface according to claim 1, characterized in that: The angle grinding assembly comprises an articulated seat (7), the upper end of which is fixedly connected to a main body (3), and the lower part of which is hinged inside the upper end of the telescopic rod (1).

4. The angle grinder for grinding cracks on concrete surface according to claim 1, characterized in that: The upper part of the hinge block (8) is slidably connected to the inside of the lower end of the main body (3), and the outer parts of the connection block (2) and the sliding ring (6) are both slidably connected to the inside of the lower end of the telescopic rod (1).

5. The angle grinder for grinding cracks on concrete surface according to claim 1, characterized in that: The left end of the clamping rod (11) is slidably connected to the inside of the lower end of the telescopic rod (1), and the two ends of the spring 1 (12) are respectively fixedly connected to the outside of the side ends of the two groups of clamping rods (11).

6. The angle grinder for grinding cracks on concrete surface according to claim 2, characterized in that: The outside of the clamping block (13) is slidably connected to the inside of the lower end of the inner rod (4) and the inside of the positioning groove (5), and the two ends of the second spring (14) are respectively fixedly connected to the outside of the side ends of the two groups of clamping blocks (13).

7. The angle grinder for grinding cracks on concrete surface according to claim 2, characterized in that: The side portion of the release rod (9) is slidably connected inside the side end of the positioning groove (5).

8. The angle grinder for grinding cracks on concrete surface according to claim 2, characterized in that: The side portion of the T-shaped block (10) is fixedly connected to the outside of the side end of the positioning groove (5).

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