Portable masonry joint grinder

Abstract

The utility model relates to the technical field of polisher, disclose a kind of portable masonry mortar joint polisher, including lithium battery cabin, the upper surface of lithium battery cabin is fixedly connected with polisher drive part, the outside of polisher drive part is provided with pressure holding switch, the outside of polisher drive part is fixedly connected with guide rod by support, the top output end of polisher drive part is fixedly connected with rotary cylinder, the inside bottom surface of rotary cylinder is fixedly connected with spring, the top of spring is fixedly connected with installation cylinder, the inside of installation cylinder is inserted with magnetic block, the upper surface of magnetic block is fixedly connected with abrasive head. In the utility model, rotary cylinder, spring, installation cylinder, magnetic block, sliding assembly, support ring and bearing cooperation are set, so that abrasive head can be polished up and down floating, better with mortar joint is adhered, avoid to cause excessive wear and tear or damage to masonry and mortar joint, simultaneously, abrasive head is installed using the way of magnetic plug, so that abrasive head can be quickly replaced.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, and in particular to a portable masonry mortar joint grinding machine. Background Technology

[0002] In the strength testing of masonry mortar in building construction, rebound testing or penetration testing are commonly used methods. However, in order to improve the accuracy of the test data, the mortar joints of the masonry need to be treated before these tests to make the surface of the mortar joints smooth. The mortar joints of masonry are generally narrow, about one centimeter wide. Special tools are needed to improve the efficiency of the grinding process when treating the mortar joints.

[0003] In practice, there are two main methods: one is to use small grinding stones for manual grinding, which is extremely inefficient and difficult to meet the needs of large-scale testing; the other is to use an angle grinder to grind the masonry and mortar joints as a whole, which can achieve a certain grinding effect, but greatly increases the workload and may cause unnecessary damage to the masonry. Therefore, a portable masonry mortar joint grinding machine is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a portable masonry mortar joint grinding machine, which aims to improve the problems of low efficiency and large workload in the existing masonry mortar joint grinding methods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a portable masonry mortar joint grinding machine, comprising a lithium battery compartment, a grinding machine drive unit fixedly connected to the upper surface of the lithium battery compartment, a pressure switch provided on the outer side of the grinding machine drive unit, a guide rod fixedly connected to the outer side of the grinding machine drive unit via a bracket, a rotating cylinder fixedly connected to the top output end of the grinding machine drive unit, a spring fixedly connected to the inner bottom surface of the rotating cylinder, a mounting cylinder fixedly connected to the top end of the spring, a magnetic block inserted into the interior of the mounting cylinder, a grinding head fixedly connected to the upper surface of the magnetic block, a sliding component provided on the outer side of the mounting cylinder, the sliding component being used to guide and limit the movement of the mounting cylinder, a support ring fixedly connected to the upper part of the grinding machine drive unit via a bracket, and a bearing fixedly connected to the interior of the support ring.

[0006] As a further description of the above technical solution:

[0007] The mounting cylinder is internally inserted into the rotating cylinder, and the interior of the mounting cylinder has a hexagonal groove structure.

[0008] As a further description of the above technical solution:

[0009] The sliding assembly includes a slider, which is fixedly connected to the outside of the mounting cylinder, and the inner wall surface of the mounting cylinder is provided with a groove.

[0010] As a further description of the above technical solution:

[0011] The slider is slidably connected to the inside of the groove.

[0012] As a further description of the above technical solution:

[0013] The rotating cylinder is fixedly connected to the inside of the bearing, and the pressure switch is electrically connected to the grinding machine drive unit.

[0014] As a further description of the above technical solution:

[0015] The guide rod and the support ring are also fixedly connected by a bracket.

[0016] As a further description of the above technical solution:

[0017] The rotating cylinder has a groove on its lower front side, and a turntable is installed inside the groove. A screw is fixedly connected to the upper surface of the turntable.

[0018] As a further description of the above technical solution:

[0019] The upper end of the screw passes through the rotating cylinder, and the front end of the turntable protrudes from the groove.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the grinding head can float up and down for grinding by means of a rotating cylinder, spring, mounting cylinder, magnetic block, sliding component, support ring and bearing, so as to better fit the mortar joint and avoid excessive wear or damage to the masonry and mortar joint. At the same time, the grinding head is installed by magnetic plugging and unplugging, so that the grinding head can be quickly replaced. The guide rod can guide and limit the grinding head movement, improve the movement stability and improve the preparation efficiency before inspection. In addition, the structure is simple and the overall weight is light, which can be easily held by hand, further improving the convenience of operation.

[0022] 2. In this utility model, the grinding head can be locked and the floating function of the grinding head can be turned off according to the user's needs by using the groove, turntable and screw. The operation is simple and the overall adaptability of the grinding machine is improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a portable masonry mortar joint grinding machine proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the drive unit of a portable masonry mortar joint grinding machine proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the rotating cylinder of a portable masonry joint grinding machine proposed in this utility model;

[0026] Figure 4 This is a schematic cross-sectional view of the front part of the rotating cylinder of a portable masonry joint grinding machine proposed in this utility model.

[0027] Legend:

[0028] 1. Lithium battery compartment; 2. Grinding machine drive unit; 3. Holding switch; 4. Guide rod; 5. Rotating cylinder; 6. Spring; 7. Mounting cylinder; 8. Magnetic block; 9. Grinding head; 10. Sliding assembly; 101. Slider; 102. Slide groove; 11. Support ring; 12. Bearing; 13. Groove; 14. Turntable; 15. Screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-2 This utility model provides an embodiment of a portable masonry mortar joint grinding machine, including a lithium battery compartment 1, in which a lithium battery is installed. A grinding machine drive unit 2 is fixedly connected to the upper surface of the lithium battery compartment 1. The grinding machine drive unit 2 is electrically connected to the lithium battery, providing power to the grinding machine drive unit 2. A pressure switch 3 is provided on the outside of the grinding machine drive unit 2, and the pressure switch 3 is electrically connected to the grinding machine drive unit 2. The user can start the grinding machine drive unit 2 by pressing the pressure switch 3 and stop the grinding machine drive unit 2 by releasing the pressure switch 3. The grinding machine is made of lightweight and sturdy materials for the outer shell and internal structural components, thereby reducing the overall weight and making it easy to carry. The above structures are all existing technologies in the field and will not be described in detail here.

[0031] Two guide rods 4 are fixedly connected to the outer side of the grinding machine drive unit 2 via a bracket. The two guide rods 4 are located on the left and right sides of the grinding machine drive unit 2, respectively. They can play a guiding and supporting role during the grinding process, ensuring that the grinding surface is uniform and flat. When the machine moves on the masonry surface, the guide rods 4 finally contact the masonry surface, limiting the vertical floating range of the grinding machine and ensuring that the grinding head 9 grinds the mortar joints to a consistent depth, thereby improving the grinding quality. A rotating cylinder 5 is fixedly connected to the top output end of the grinding machine drive unit 2. When the grinding machine drive unit 2 is started, it can drive the rotating cylinder 5 to rotate.

[0032] Reference Figures 2-4 A spring 6 is fixedly connected to the bottom surface of the inner cavity of the rotating cylinder 5, and a mounting cylinder 7 is fixedly connected to the top of the spring 6. When the mounting cylinder 7 moves downward, it compresses the spring 6, generating elastic potential energy. The elastic deformation of the spring 6 allows the mounting cylinder 7 to float up and down. The mounting cylinder 7 is inserted into the interior of the rotating cylinder 5, and the rotating cylinder 5 can initially limit the mounting cylinder 7, reducing the risk of the mounting cylinder 7 shifting. The interior of the mounting cylinder 7 has a hexagonal groove structure, and a magnetic block 8 is inserted into the interior of the mounting cylinder 7. A grinding head 9 is fixedly connected to the upper surface of the magnetic block 8. The sample adopts a hexagonal structure. When the magnetic block 8 is inserted into the installation cylinder 7, it is automatically limited by the hexagonal shape, preventing the magnetic block 8 from rotating relative to the installation cylinder 7. At the same time, the installation cylinder 7 is made of iron material. When the magnetic block 8 is inserted into the installation cylinder 7, it can be magnetically limited, so that the rotating cylinder 5 can stably drive the magnetic block 8 and the grinding head 9 to rotate, so as to achieve stable grinding. Furthermore, if the user pulls the grinding head 9 upward, it can directly move the grinding head 9 and the magnetic block 8 upward out of the installation cylinder 7, releasing the magnetic limit and facilitating replacement.

[0033] A support ring 11 is fixedly connected to the upper part of the grinding machine drive unit 2 via a bracket. The guide rod 4 is also fixedly connected to the support ring 11 via a bracket. A bearing 12 is fixedly connected inside the support ring 11. The rotating cylinder 5 is fixedly connected to the inside of the bearing 12. The rotating cylinder 5 is rotatably connected to the inside of the support ring 11 via the bearing 12. At this time, the support ring 11 can support and limit the outside of the rotating cylinder 5, thereby improving the stability of the rotating cylinder 5 when it rotates.

[0034] A sliding assembly 10 is provided on the outer side of the mounting cylinder 7. The sliding assembly 10 includes a slider 101, which is fixedly connected to the outer side of the mounting cylinder 7. A groove 102 is provided on the inner wall surface of the mounting cylinder 7. When the mounting cylinder 7 moves, it can drive the slider 101 to move synchronously. The slider 101 is slidably connected to the inside of the groove 102. The slider 101 can move up and down inside the groove 102. Through the cooperation of the slider 101 and the groove 102, the movement of the mounting cylinder 7 can be further guided and limited to prevent the mounting cylinder 7 from detaching from the inside of the rotating cylinder 5. At the same time, when the rotating cylinder 5 rotates, it can drive the mounting cylinder 7 to rotate more stably, thereby improving the grinding stability of the grinding head 9.

[0035] Reference Figure 4 The rotating cylinder 5 has a groove 13 on its lower front side. A turntable 14 is installed inside the groove 13. The front end of the turntable 14 protrudes from the groove 13. A screw 15 is fixedly connected to the upper surface of the turntable 14. The upper end of the screw 15 passes through the rotating cylinder 5. When the user rotates the turntable 14, the screw 15 can rotate synchronously. The screw 15 is located below the mounting cylinder 7. When the screw 15 rotates, it can move linearly up and down relative to the rotating cylinder 5. When the screw 15 moves up and fits against the bottom of the mounting cylinder 7, the mounting cylinder 7 can be locked, so that the mounting cylinder 7 can no longer float up and down. This allows the grinding head 9 to float or lock according to the user's needs, making the operation simple.

[0036] Working principle: The operator holds the grinder, places the guide rod 4 on the masonry surface, aligns the grinder head 9 with the mortar joint to be ground, presses the holding switch 3 to start the grinder drive unit 2, and the grinder head 9 begins to rotate and grind the mortar joint. During the grinding process, the guide rod 4 can guide and limit the movement of the grinder head 9 to ensure the smooth movement of the grinder. At the same time, the grinder head 9 can float up and down relative to the rotating cylinder 5 under the action of the mounting cylinder 7 and the spring 6, so that the grinder head 9 can automatically adjust its position according to the height of the mortar joint surface for efficient grinding. When it is necessary to replace the grinder head 9, simply pull up the grinder head 9 to pull the magnetic block 8 away from the magnetic limit inside the mounting cylinder 7, and the grinder head 9 can be directly removed. Then, insert the magnetic block 8 at the bottom of the new grinder head 9 into the mounting cylinder 7 to complete the installation. The structure is simple and the operation is convenient.

[0037] When the user needs to lock the grinding head 9, they can directly rub and rotate the turntable 14 to drive the screw 15 upward, so that the screw 15 is in contact with the bottom surface of the mounting cylinder 7, and the slider 101 is in contact with the top surface of the slide groove 102, quickly locking the mounting cylinder 7 and turning off the floating function of the grinding head 9.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable masonry mortar joint grinding machine, comprising a lithium battery compartment (1), characterized in that: A grinding machine drive unit (2) is fixedly connected to the upper surface of the lithium battery compartment (1). A pressure switch (3) is provided on the outside of the grinding machine drive unit (2). A guide rod (4) is fixedly connected to the outside of the grinding machine drive unit (2) via a bracket. A rotating cylinder (5) is fixedly connected to the top output end of the grinding machine drive unit (2). A spring (6) is fixedly connected to the bottom surface inside the rotating cylinder (5). An installation cylinder (7) is fixedly connected to the top of the spring (6). A magnetic block (8) is inserted inside the installation cylinder (7). A grinding head (9) is fixedly connected to the upper surface of the magnetic block (8). A sliding component (10) is provided on the outside of the installation cylinder (7). The sliding component (10) is used to guide and limit the movement of the installation cylinder (7). A support ring (11) is fixedly connected to the top of the grinding machine drive unit (2) via a bracket. A bearing (12) is fixedly connected inside the support ring (11).

2. The portable masonry mortar joint grinding machine according to claim 1, characterized in that: The mounting cylinder (7) is inserted into the interior of the rotating cylinder (5), and the interior of the mounting cylinder (7) is configured with a hexagonal groove structure.

3. The portable masonry mortar joint grinding machine according to claim 1, characterized in that: The sliding assembly (10) includes a slider (101), which is fixedly connected to the outside of the mounting cylinder (7), and the inner wall surface of the mounting cylinder (7) is provided with a groove (102).

4. A portable masonry mortar joint grinding machine according to claim 3, characterized in that: The slider (101) is internally slidably connected to the groove (102).

5. A portable masonry mortar joint grinding machine according to claim 1, characterized in that: The rotating cylinder (5) is internally fixedly connected to the bearing (12), and the pressure switch (3) is electrically connected to the grinding machine drive unit (2).

6. A portable masonry mortar joint grinding machine according to claim 1, characterized in that: The guide rod (4) and the support ring (11) are also fixedly connected by a bracket.

7. A portable masonry mortar joint grinding machine according to claim 1, characterized in that: The rotating cylinder (5) has a groove (13) on the lower side of its front side. A turntable (14) is provided inside the groove (13), and a screw (15) is fixedly connected to the upper surface of the turntable (14).

8. A portable masonry mortar joint grinding machine according to claim 7, characterized in that: The upper end of the screw (15) passes through the rotating cylinder (5), and the front end of the turntable (14) protrudes from the groove (13).

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