Concrete preformed hole bush hammer

Abstract

The utility model provides a concrete preformed hole bush hammer, belongs to the technical field of bush hammers, and solves the problem that an existing preformed hole bush hammer does not have a dust removal function. The polishing device comprises a shell, a motor is arranged in the shell and connected with a rotating shaft, the end of the rotating shaft is connected with a polishing head, at least two guide holes are formed in the shell, movable rods are movably arranged in the guide holes, the ends, located in the guide holes, of the movable rods are connected with piston blocks, and springs are arranged at the ends, away from the movable rods, of the piston blocks. The end, away from the piston block, of the movable rod is connected with a suction cover movably arranged on the rotating shaft in a sleeving mode, the suction cover communicates with a suction hose, and the suction hose is connected with a suction pump. When the grinding head grinds and scabs the preformed hole, the suction cover keeps covering the preformed hole in an attached mode under the action of the spring, the suction pump sucks dust in the preformed hole through the suction hose, the dust is prevented from diffusing out of the preformed hole, and it is guaranteed that the construction environment is clean and tidy, and the health of operators is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of scarifiers, and particularly relates to a scarifier for concrete reserved holes. Background Art

[0002] A scarifier is a mechanical device specifically used to process the surface of hard materials such as concrete. The scarifier chisels the concrete surface to increase the surface roughness and adhesion.

[0003] Traditional scarifiers can only process relatively flat surfaces and are not applicable to some holes. In the prior art, a scarifier that can chisel the reserved holes of concrete has been designed. For example, the patent with the publication number CN217531409U discloses a hole scarifying device for building construction, which includes a base. A chute is opened on the upper surface of the base. A lead screw is fixedly arranged in the chute. A slider is slidably arranged in the chute. A through hole is arranged in the middle of the slider. The slider is sleeved outside the lead screw through the through hole. An installation seat is fixedly arranged on the slider. A rotating hole is opened on the installation seat. A scarifying mechanism for scarifying the holes in building construction is rotatably arranged in the rotating hole. A driving mechanism for driving the scarifying mechanism to work is arranged on one side of the installation seat, and a drill is movably connected to the driving mechanism. The beneficial effects are: simple structure, convenient to use, reducing the manual labor amount, being able to uniformly scarify the hole wall, adapting to various on-site requirements, ensuring the integrity of the bonding materials such as concrete and mortar, improving the bonding strength, and ensuring the project quality. However, during the scarifying process, a large amount of dust will be generated, which will affect the environment of the construction area, and the health of the operators will also be affected after inhaling the dust. Therefore, it is necessary to design a reserved hole scarifier that can remove dust. Content of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a scarifier for concrete reserved holes. When the grinding head grinds and chisels the reserved hole, the suction hood is kept in close contact with the reserved hole under the action of the spring. The suction pump sucks the dust in the reserved hole through the suction hose, avoiding the diffusion of dust from the reserved hole, ensuring the cleanliness of the construction environment and the health of the operators is not affected.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A concrete reserved hole roughening machine, including a housing, a motor is arranged in the housing, the motor is connected to a rotating shaft that penetrates through the housing, the end of the rotating shaft is connected to a grinding head, at least two guiding holes are opened in the housing along the length direction of the rotating shaft, a movable rod is movably arranged in the guiding holes, one end of the movable rod located in the guiding hole is connected to a piston block that is in sliding contact with the guiding hole, a spring is arranged at one end of the piston block away from the movable rod, the end of the movable rod away from the piston block is connected to a suction hood that is movably sleeved on the rotating shaft, the suction hood is communicated with a suction hose, and the suction hose is connected to a suction pump arranged on the housing.

[0007] Preferably, a filter screen covering the pipe orifice of the suction hose is arranged on the inner side of the suction hood.

[0008] Preferably, bristles are connected to one end face of the rotating shaft close to the grinding head.

[0009] Preferably, a sound-absorbing layer is arranged on the inner wall of the suction hood.

[0010] Preferably, a mounting sleeve is fixedly arranged on the grinding head, a screw rod that radially movably penetrates through the mounting sleeve and the rotating shaft is arranged on the mounting sleeve, and a nut is threadedly connected to the screw rod.

[0011] Preferably, several protruding parts are arranged on the end face of the grinding head away from the rotating shaft.

[0012] Preferably, a handle for grasping is arranged on the housing.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] When the grinding head grinds and roughens the reserved hole, the suction hood is kept in close contact with and covers the reserved hole under the action of the spring, and the suction pump sucks the dust in the reserved hole through the suction hose, avoiding the diffusion of dust from the reserved hole, ensuring the cleanliness of the construction environment and the health of the operators is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram provided by the embodiments of the present utility model.

[0017] Description of the Drawings: 1 - outer shell; 2 - handle; 3 - motor; 4 - suction pump; 5 - suction hose; 6 - guide hole; 7 - spring; 8 - piston block; 9 - movable rod; 10 - rotating shaft; 11 - nut; 12 - suction hood; 13 - sound-absorbing layer; 14 - filter screen; 15 - bristles; 16 - grinding head; 17 - protrusion; 18 - mounting sleeve; 19 - screw; 20 - concrete wall; 21 - reserved hole. Detailed Implementation Manner

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0020] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0021] The following will be combined with Figure 1 to describe the present utility model in detail.

[0022] Embodiment

[0023] A concrete reserved hole roughening machine includes a housing 1. A motor 3 is arranged in the housing 1. The motor 3 is connected to a rotating shaft 10 that penetrates through the housing 1. The end of the rotating shaft 10 is connected to a grinding head 16. At least two guiding holes 6 are opened in the housing 1 along the length direction of the rotating shaft 10. A movable rod 9 is movably arranged in the guiding holes 6. One end of the movable rod 9 located in the guiding hole 6 is connected to a piston block 8 that is in sliding contact with the guiding hole 6. A spring 7 is arranged at one end of the piston block 8 away from the movable rod 9. The end of the movable rod 9 away from the piston block 8 is connected to a suction hood 12 that is movably sleeved on the rotating shaft 10. The suction hood 12 is communicated with a suction hose 5. The suction hose 5 is connected to a suction pump 4 arranged on the housing 1.

[0024] Wherein the piston block 8 prevents the movable rod 9 from moving out of the guiding hole 6. The motor 3 drives the grinding head 16 to rotate through the rotating shaft 10. The grinding head 16 is inserted into the reserved hole 21 on the concrete wall 20 and contacts the inner wall of the reserved hole 21 to achieve grinding and roughening. During the process of the grinding head 16 extending into the reserved hole 21, the suction hood 12 fits on the surface of the concrete wall 20, and the suction hood 12 compresses the spring 7 through the movable rod 9, so as to maintain the fitting state. At the same time, the suction pump 4 sucks the dust in the reserved hole 21 through the suction hose 5 to prevent the dust from diffusing out of the reserved hole 21.

[0025] A filter screen 14 is arranged inside the suction hood 12 and covers the pipe orifice of the suction hose 5. The filter screen 14 can filter the dust to prevent the dust from entering the suction hose 5 and causing blockage.

[0026] One end face of the rotating shaft 10 close to the grinding head 16 is connected with a brush 15. When the grinding head 16 extends out of the hole, the brush 15 fits on the filter screen 14. At this time, by rotating the rotating shaft 10, the dust attached to the filter screen 14 can be brushed off to ensure the smoothness of the filter screen 14.

[0027] The filter screen 14 is arranged below the rotating shaft 10 to prevent the rotating shaft 10 from contacting and wearing the suction hose 5, and the filter screen 14 is close to the rotating shaft 10, so as to shorten the length of the brush 15 and prevent the brush 15 from being too long and affecting the insertion of the grinding head 16 into the reserved hole 21.

[0028] An acoustic absorption layer 13 is arranged on the inner wall of the suction hood 12. The acoustic absorption layer 13 can absorb the noise generated during the grinding process and reduce the influence of the noise on the operator.

[0029] An installation sleeve 18 is fixedly arranged on the grinding head 16. A screw rod 19 that penetrates through the installation sleeve 18 and the rotating shaft 10 radially is arranged on the installation sleeve 18. A nut 11 is threadedly connected to the screw rod 19. The grinding head 16 is sleeved on the end of the rotating shaft 10 through the installation sleeve 18, and the installation sleeve 18 is fixed by the cooperation of the screw rod 19 and the nut 11, which is convenient for replacing a new grinding head 16 subsequently.

[0030] The end face of the grinding head 16 away from the rotating shaft 10 is provided with several protrusions 17. The provision of the protrusions 17 can grind the end face of the reserved hole 21, increasing the chiseling effect.

[0031] A handle 2 for grasping is provided on the housing 1. The handle 2 can facilitate the operator to pick up the chiseling machine for chiseling operation.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete reserved hole roughening machine, comprising a housing (1), a motor (3) is arranged in the housing (1), the motor (3) is connected to a rotating shaft (10) that penetrates through the housing (1), and a grinding head (16) is connected to the end of the rotating shaft (10), characterized in that, At least two guiding holes (6) are formed in the housing (1) along the length direction of the rotating shaft (10). A movable rod (9) is movably arranged in the guiding holes (6). One end of the movable rod (9) located in the guiding holes (6) is connected with a piston block (8) that is in sliding contact with the guiding holes (6). A spring (7) is arranged at the end of the piston block (8) far away from the movable rod (9). One end of the movable rod (9) far away from the piston block (8) is connected with a suction hood (12) that is movably sleeved on the rotating shaft (10). The suction hood (12) is communicated with a suction hose (5), and the suction hose (5) is connected with a suction pump (4) arranged on the housing (1).

2. The concrete reserved hole roughening machine according to claim 1, characterized in that, A filter screen (14) covering the nozzle of the suction hose (5) is arranged on the inner side of the suction hood (12).

3. The concrete reserved hole roughening machine according to claim 2, characterized in that, A brush hair (15) is connected to one end face of the rotating shaft (10) close to the grinding head (16).

4. The concrete reserved hole roughening machine according to claim 1, characterized in that, A sound-absorbing layer (13) is arranged on the inner wall of the suction hood (12).

5. A concrete reserved hole roughening machine according to claim 1, characterized in that, An installation sleeve (18) is fixedly arranged on the grinding head (16). A screw rod (19) that radially movably penetrates through the installation sleeve (18) and the rotating shaft (10) is arranged on the installation sleeve (18). A nut (11) is threadedly connected to the screw rod (19).

6. The concrete reserved hole roughening machine according to claim 1, characterized in that, Several protruding parts (17) are arranged on the end face of the grinding head (16) far away from the rotating shaft (10).

7. A concrete reserved hole roughening machine according to claim 1, characterized in that, A handle (2) for grasping is arranged on the housing (1).

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