Hollow drum hammer for construction

Abstract

The utility model belongs to the technical field of supervision tools, and provides a hollow drum hammer for construction, which comprises a box body, a screw rod rotatably connected on the inner wall of the box body, a nut screwed on the outer side of the screw rod, a first bevel gear coaxially fixed on the screw rod, a through hole arranged on the side wall of the box body, a driving rod rotatably inserted in the through hole, and a second bevel gear coaxially fixed on the inner end of the driving rod, the second bevel gear is meshed with the first bevel gear; the protective shell is fixed to the box body, a sliding rod is arranged in the protective shell in a sliding and sleeved mode, a hammer head is arranged at the end, away from the protective shell, of the sliding rod, the sliding rod is fixed to the nut through a connecting rod, and strip-shaped windows allowing the connecting rod to penetrate through are formed in the side wall of the box body and the side wall of the protective shell. According to the hollowing hammer, the length of the hammer body can be accurately and stably adjusted, the detection requirements of different positions are met, and the length of the hammer body cannot be changed due to external force. And the sliding rod and the hammer head can be retracted into the protective shell, so that the hammer head is protected, and the detection effect is not affected even if the hammer head is not used for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of supervision tools, and particularly relates to a hollow hammer for construction. Background Art

[0002] Hollowing refers to the loose adhesion between tiles and structural layers, which can easily lead to cracking, arching, and falling off. Hollowing not only affects the appearance, but also hinders the subsequent drilling and installation of cabinets, electrical appliances, etc., posing a serious safety hazard.

[0003] The hollowing hammer is a professional tool for supervisors. It is mainly used to detect whether there are cracks, hollows, etc. on the wall paint surface of a house that has just been completed. The different sounds produced when knocking can be used to determine whether there are hollows.

[0004] Existing hollow hammers for construction are relatively simple in function. They cannot replace the hammer head or precisely adjust the length of the hammer body according to environmental requirements, making them inadequate for inspections in some environments. Furthermore, existing hollow hammers lack a protective device for the hammer head, so prolonged exposure to the elements can damage the hammer head, impacting inspection effectiveness. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a hollow hammer for construction, which can not only accurately adjust the length of the hammer body but also protect the hammer head when not in use.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a hollow hammer for construction, comprising:

[0007] A box body, an inner wall of which is rotatably connected to a screw rod, a nut is screwed onto the outer side of the screw rod, a first bevel gear is coaxially fixed to the screw rod, a through hole is provided on the side wall of the box body, a driving rod is rotatably inserted into the through hole, a second bevel gear is coaxially fixed to the inner end of the driving rod, and the second bevel gear is meshed with the first bevel gear;

[0008] A protective shell is fixed to the box body, a sliding rod is provided in the sliding sleeve of the protective shell, a hammer head is provided at the end of the sliding rod away from the protective shell, the sliding rod and the nut are fixed by a connecting rod, and strip windows for the connecting rod to pass through are provided on the side walls of the box body and the side walls of the protective shell.

[0009] Preferably, a rotating groove with a T-shaped cross-section is provided on the top wall of the box body, and a rotating block adapted to the rotating groove is coaxially fixed to the top end of the screw, and the rotating block is embedded in the rotating groove.

[0010] Preferably, an extension rod is coaxially fixed to the bottom end of the screw rod, and the first bevel gear is coaxially fixedly sleeved on the outside of the extension rod.

[0011] Preferably, the bottom end of the extension rod is rotatably connected to the bottom wall of the box body.

[0012] Preferably, limit plates are fixedly sleeved on the outer sides of both ends of the screw.

[0013] Preferably, the second bevel gear is larger than the first bevel gear.

[0014] Preferably, a rotating disk is coaxially fixed to the outer end of the driving rod.

[0015] Preferably, an annular bracket is provided on the side wall of the box body, and the driving rod is rotatably mounted on the inner side of the annular bracket through a bearing.

[0016] Preferably, a handle is fixed to the bottom end of the protective shell.

[0017] Preferably, the hammer head is fixed with a rotary block with external threads, the top end of the sliding rod is provided with a mounting opening with internal threads, and the rotary block is screwed to the mounting opening.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model provides a hollow hammer for construction. By rotating the drive rod, the second bevel gear can be driven to rotate, which in turn drives the first bevel gear to rotate, which in turn drives the screw to rotate, and then drives the nut to move along the screw, which in turn drives the sliding rod to move, thereby adjusting the extension length of the sliding rod, and thus adjusting the hammer body length of the hollow hammer, which can meet the detection requirements of different positions. Moreover, the adjustment process of the hammer body length is precise and stable, and will not change arbitrarily due to external forces, and the measurement effect is more accurate. In addition, when the hollow hammer is not needed, the driving rod is rotated in the opposite direction, so that the sliding rod and the hammer head are retracted into the protective shell, which can protect the hammer head and will not affect the detection effect even if it is not used for a long time.

[0020] 2. The utility model provides a hollow hammer for construction, in which the rotary block is connected to the mounting port through a thread, and the hammer head can be removed by rotating the rotary block, which is very convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A front view structural diagram of a hollow drum hammer for construction provided by an embodiment of the utility model;

[0022] Figure 2 A schematic cross-sectional view of a construction hollow hammer housing and a protective shell provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the three-dimensional structure of a hammer head of a hollow hammer for construction provided by an embodiment of the utility model;

[0024] Figure 4 A schematic side view of a strip window and related parts of a hollow hammer for construction provided by an embodiment of the present utility model;

[0025] Figure 5 A schematic front view of the structure of a rotating block and related parts of a hollow drum hammer for construction provided by an embodiment of the present utility model;

[0026] Figure 6 A schematic front view of the structure of a ring bracket and related parts of a hollow drum hammer for construction provided by an embodiment of the present utility model;

[0027] Figure 7 The present invention is a schematic side view of the structure of a ring-shaped bracket of a hollow hammer for construction provided by an embodiment of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Box body; 201. Drive rod; 202. Rotating disk; 203. Second bevel gear; 204. First bevel gear; 205. Extension rod; 206. Limit plate; 207. Screw; 208. Nut; 209. Ring bracket; 210. Connecting rod; 3. Protective shell; 401. Sliding rod; 402. Hammer; 403. Rotating block; 404. Mounting port; 5. Rotating block; 6. Strip window; 7. Handle. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.

[0031] It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integrated structures. Those skilled in the art will understand the specific meanings of such terms in this patent based on specific circumstances.

[0032] Example 1

[0033] This embodiment provides a hollow hammer for construction, comprising:

[0034] Box 1, see Figure 1-2The housing 1 can be a strip-shaped structure and is arranged vertically. A screw rod 207 is rotatably connected to its inner wall. The screw rod 207 is also arranged vertically. A nut 208 is screwed to the outer side of the screw rod 207. The screw rod 207 is coaxially fixed to the first bevel gear 204. A through hole is provided on the side wall of the housing 1. A drive rod 201 is rotatably inserted into the through hole. That is, the drive rod 201 can rotate in the through hole. The drive rod 201 is arranged horizontally. The inner end of the drive rod 201 extends to the inside of the housing 1, and the outer end extends to the outside of the housing 1. The inner end of the drive rod 201 is coaxially fixed to the second bevel gear 203, which meshes with the first bevel gear 204.

[0035] The protective shell 3 is fitted and fixed to the box body 1. The protective shell 3 can be a strip-shaped structure and is arranged vertically. The top of the protective shell 3 is open. The sliding sleeve in the protective shell 3 is provided with a sliding rod 401, that is, the sliding rod 401 can slide vertically, and the sliding rod 401 can slide out from the top opening of the protective shell 3. The sliding rod 401 is provided with a hammer head 402 at the end away from the protective shell 3. The hammer head 402 is used for knocking detection. The sliding rod 401 and the nut 208 are fixed by the connecting rod 210. For example, the side wall of the bottom end of the sliding rod 401 is fixed to the connecting rod 210, and the connecting rod 210 is fixed to the side wall of the nut 208, so that the sliding rod 401 can be extended as much as possible. The side walls of the box body 1 and the protective shell 3 are both provided with strip windows 6 for the connecting rod 210 to pass through. See Figure 4 The strip window 6 can be adapted to the connecting rod 210, and the strip window 6 can limit the connecting rod 210, thereby improving the stability of the connecting rod 210 when it moves up and down.

[0036] Based on the above structure, since the sliding rod 401 is slidably connected to the protective shell 3, that is, the sliding rod 401 can only move vertically, and the sliding rod 401 and the nut 208 are fixed by the connecting rod 210, that is, the nut 208 can also only move vertically, similar to the principle of the screw transmission mechanism, the nut 208 can be driven up and down by rotating the screw 207.

[0037] Since the second bevel gear 203 is meshed with the first bevel gear 204, rotating the drive rod 201 can drive the second bevel gear 203 to rotate, thereby driving the first bevel gear 204 to rotate, and driving the screw rod 207 to rotate, and then driving the nut 208 to move up and down along the screw rod 207, driving the sliding rod 401 to move up and down, thereby adjusting the extension length of the sliding rod 401, and then adjusting the hammer length of the hollow hammer to meet the detection requirements of different positions. Moreover, the adjustment process of the hammer length is precise and stable, and will not change arbitrarily due to external forces, resulting in more accurate measurement results. For example, in some other embodiments, a telescopic rod can be used to control the length of the hammer, but the length of a conventional telescopic rod cannot be kept stable and is easily changed after being struck, resulting in less accurate detection results.

[0038] In addition, when the hollow hammer is not needed, the driving rod 201 can be rotated in the opposite direction to retract the sliding rod 401 and the hammer head 402 into the protective shell 3, which can protect the hammer head 402 and will not affect the detection effect even if it is not used for a long time.

[0039] In this embodiment, a rotating disk 202 is coaxially fixed to the outer end of the driving rod 201. By manually turning the rotating disk 202, the driving rod 201 can be rotated, which is convenient for the staff to operate.

[0040] To improve hammer length adjustment efficiency, in this embodiment, the second bevel gear 203 is larger than the first bevel gear 204. This allows the first bevel gear 204 to rotate faster when the second bevel gear 203 is rotated, thereby increasing the rotation rate of the screw 207. This avoids the need to rotate the drive rod 201 excessively when adjusting the hammer length, which would result in lower adjustment efficiency. This not only allows for precise and stable hammer length adjustment, but also ensures efficient adjustment.

[0041] In order to improve the stability of the driving rod 201, see Figure 6-7 In this embodiment, an annular bracket 209 is fixedly provided on the inner wall of the box body 1, and a rotation hole is penetrated through the annular bracket 209. The driving rod 201 is rotatably installed in the rotation hole of the annular bracket 209 through a bearing. In this way, the annular bracket 209 can limit the driving rod 201, improve the stability of the driving rod 201, and make the driving rod 201 rotate stably. At the same time, the stability of the second bevel gear 203 can also be improved.

[0042] In order to be able to flexibly replace the hammer head 402, see Figure 1 、 Figure 3 In this embodiment, the hammer head 402 is fixed with a screw block 403 with external threads, and the top of the sliding rod 401 is provided with a mounting hole 404 with internal threads, and the screw block 403 is screwed to the mounting hole 404. The hammer head 402 can be removed by rotating the screw block 403, which is very convenient to operate.

[0043] In order to make the screw 207 rotate stably in the box body 1, see Figure 5 In this embodiment, an embedded rotating groove with a T-shaped cross-section is opened on the inner top wall of the box body 1, and a rotating block 5 adapted to the rotating groove is coaxially fixed to the top of the screw 207. The cross-section of the rotating block 5 is also a T-shaped structure. The rotating block 5 is embedded in the rotating groove, that is, the rotating block 5 can rotate in the rotating groove.

[0044] The bottom end of the screw rod 207 is coaxially fixed with an extension rod 205, and the first bevel gear 204 is coaxially fixedly sleeved on the outside of the extension rod 205. Interference between the extension rod 205 and the first bevel gear 204 can be avoided.

[0045] The bottom end of the extension rod 205 is rotatably connected to the bottom wall of the box body 1 in the same manner as the top end of the screw rod 207 is rotatably connected to the top wall of the box body 1. In other words, both the upper and lower ends of the screw rod 207 have rotation support structures, allowing the screw rod 207 to rotate stably in the box body 1.

[0046] Among them, the outer sides of both ends of the screw rod 207 are fixedly sleeved with a limit plate 206. The limit plate 206 can prevent the nut 208 from separating from the screw rod 207.

[0047] Finally, in this embodiment, a handle 7 is fixed to the bottom end of the protective shell 3, and the handle 7 can be fixedly connected to the protective shell 3 and the box body 1 at the same time. The handle 7 is convenient for the staff to hold the hollow hammer, and the operation is more flexible.

[0048] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.

[0049] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, specific orientation structure, or operation. Therefore, they should not be construed as limiting this utility model. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0050] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hollow hammer for construction, characterized in that: include: A box body (1) is provided with a screw rod (207) rotatably connected to its inner wall, a nut (208) is screwed to the outer side of the screw rod (207), a first bevel gear (204) is coaxially fixed to the screw rod (207), a through hole is provided on the side wall of the box body (1), a driving rod (201) is rotatably inserted into the through hole, a second bevel gear (203) is coaxially fixed to the inner end of the driving rod (201), and the second bevel gear (203) is meshed with the first bevel gear (204); A protective shell (3) is fixed to the box body (1); a sliding rod (401) is provided in a sliding sleeve inside the protective shell body (3); a hammer head (402) is provided at one end of the sliding rod (401) away from the protective shell body (3); the sliding rod (401) and the nut (208) are fixed via a connecting rod (210); and strip windows (6) for the connecting rod (210) to pass through are provided on the side walls of the box body (1) and the side walls of the protective shell body (3).

2. A hollow hammer for construction according to claim 1, characterized in that: The inner top wall of the box body (1) is provided with a rotating groove with a T-shaped cross section, and a rotating block (5) adapted to the rotating groove is coaxially fixed to the top end of the screw rod (207), and the rotating block (5) is embedded in the rotating groove.

3. A hollow hammer for construction according to claim 2, characterized in that: An extension rod (205) is coaxially fixed to the bottom end of the screw rod (207), and the first bevel gear (204) is coaxially fixedly sleeved on the outside of the extension rod (205).

4. A hollow hammer for construction according to claim 3, characterized in that: The bottom end of the extension rod (205) is rotatably connected to the inner bottom wall of the box body (1).

5. A hollow hammer for construction according to claim 4, characterized in that: Limiting plates (206) are fixedly sleeved on the outer sides of both ends of the screw rod (207).

6. A hollow hammer for construction according to claim 1, characterized in that: The second bevel gear (203) is larger in size than the first bevel gear (204).

7. A hollow hammer for construction according to claim 1, characterized in that: A rotating disk (202) is coaxially fixed to the outer end of the driving rod (201).

8. A hollow hammer for construction according to claim 1, characterized in that: An annular bracket (209) is provided on the side wall of the box body (1), and the driving rod (201) is rotatably mounted on the inner side of the annular bracket (209) via a bearing.

9. A hollow hammer for construction according to claim 1, characterized in that: A handle (7) is fixed to the bottom end of the protective shell (3).

10. A hollow hammer for construction according to claim 1, characterized in that: The hammer head (402) is fixed with a rotary block (403) with external threads, and the top end of the sliding rod (401) is provided with a mounting opening (404) with internal threads, and the rotary block (403) is screwed to the mounting opening (404).

Images