Empty drum hammer for engineering supervision

Abstract

The utility model relates to a hollowing hammer for engineering supervision. The hollowing hammer comprises a handle (10) and a hammer head (11), a connecting shell (21), a sleeve (22) is rotatably arranged in the connecting shell (21), a knocking rod (23) is slidably sleeved with the sleeve (22), one end of the knocking rod (23) extends out of the connecting shell (21) and is fixed to the hammer head (11), a lifting pin (24) is fixed to the other end of the knocking rod (23), and the lifting pin (24) makes contact with a wavy surface (25) at the end of the sleeve (22) and slides along the wavy surface (25), so that the knocking rod (23) vibrates in the axial direction; the sleeve (22) and the wavy surface (25) at the end of the sleeve (22) rotate, the lifting pin (24) always makes contact with the wavy surface (25) and slides along the wavy surface (25), the knocking rod (23) and the hammer head (11) are driven to vibrate in the axial direction, the mode that a detector manually swings the handle (10) is replaced, the wall is automatically knocked to detect hollowing, wrist fatigue and aching pain caused by long-term use of the detector are avoided, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection, in particular to a hollow drum hammer for engineering supervision. Background Art

[0002] Wall hollowing detection is a building inspection method, mainly used to detect whether there is hollowing on the wall. "Hollowing" refers to the gap between the wall and ceiling decoration layer (plastering or pasting tiles) and the structural layer (concrete or brick wall) due to loose pasting and bonding, commonly known as "two layers of skin". The hollowing phenomenon may be caused by many reasons, such as poor construction quality, improper material selection, environmental impact, etc. The hollow wall may affect the stability of the building and may cause cracks and other problems, so it should be inspected and repaired in time. When detecting whether the wall is hollow, a hollowing hammer is often used to knock on the wall. The wall is perceived by hearing whether there is hollowing on the wall. If the wall is hollow, the knocking sound will be hollower than that of a solid wall. The hollowing hammers currently on the market require the inspector to manually swing the handle to swing the hammer head to knock on the wall. Long-term use will cause fatigue and soreness in the inspector's wrist, which is inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing hollowing hammer requires the inspector to manually swing the handle to swing the hammer head to knock the wall surface. Long-term use will cause fatigue and soreness in the wrist of the inspector, which is inconvenient to use.

[0004] In order to solve the above problems, the utility model provides a hollow hammer for engineering supervision, including a hammer head arranged at the top of a handle, a connecting shell is installed at the top of the handle, a sleeve is rotatably provided in the connecting shell, a knocking rod is slidably sleeved in the sleeve, one end of the knocking rod extends out of the connecting shell and is fixed to the hammer head, and a push pin is fixed to the other end of the knocking rod, the push pin contacts the wave surface of the end of the sleeve and slides along it, so that the knocking rod vibrates axially.

[0005] The hollow drum hammer for engineering supervision provided by the utility model also has the following technical features:

[0006] The wave surface includes the end surface of the sleeve and multiple groups of groove surfaces evenly arranged along the circumference of the sleeve. The ejector pin contacts the end surface of the sleeve and the groove surface and slides along them.

[0007] The groove surface includes a vertical surface, a parallel surface, and an inclined surface which are arranged in sequence relative to the end surface of the sleeve. One end of the vertical surface is connected to the end surface of the sleeve, the other end of the vertical surface is connected to one end of the parallel surface, the other end of the parallel surface is connected to one end of the inclined surface, and the other end of the inclined surface is connected to the end surface of the sleeve.

[0008] The other end of the knocking rod is fixed to one side of the connecting disk, one side of the connecting disk is fixed to one end of the push pin, the other end of the push pin contacts the wavy surface of the sleeve end and slides along it, the other side of the connecting disk is fixed to one end of the compression spring, and the other end of the compression spring is fixed to the connecting shell.

[0009] A moving hole is provided on one side of the connecting shell close to the hammer head, a knocking rod is slidably sleeved in the moving hole, a key slot is provided on the knocking rod, a key corresponding to the key slot is provided in the moving hole, and the key is fixed to the connecting shell.

[0010] A motor is fixed in the connecting shell, the output shaft of the motor is fixed to the gear, the gear is meshed with the gear ring, and the gear ring is fixed on the outer circumferential surface of the sleeve.

[0011] A wave surface is arranged on one end surface of the sleeve, and the other end surface is fixed to a connecting ring, and the connecting ring is rotatably connected to the connecting shell.

[0012] A mounting hole is provided on one side of the connection shell away from the hammer head, a mounting box is fixed in the mounting hole, and a plurality of spring sheets are fixed in the circumference of the mounting box for mounting and clamping the paintbrush.

[0013] The outer circumferential surface of the handle is provided with anti-skid patterns, the top end of the handle is slidably connected with a telescopic rod, and the top end of the telescopic rod is fixed to the connecting shell.

[0014] The utility model has the following beneficial effects: the wavy surface of the sleeve and its end portion rotates, and the top pin is always in contact with the wavy surface and slides along it, driving the knocking rod and the hammer head to vibrate axially, thereby replacing the manual swinging handle of the inspector, automatically knocking on the wall to detect hollow drums, avoiding wrist fatigue and soreness of the inspector caused by long-term use, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial cross-sectional view of the axonometric drawing of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of

[0017] Figure 3 It is a schematic diagram of the structure of the sleeve;

[0018] Figure 4 for Figure 2 Axonometric drawing from another perspective. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0020] like Figures 1 to 4As shown, the utility model of the hollow drum hammer for engineering supervision includes a hammer head 11 arranged at the top of the handle 10, and a connecting shell 21 is installed at the top of the handle 10. A sleeve 22 is rotatably provided in the connecting shell 21, and a knocking rod 23 is slidably sleeved in the sleeve 22. One end of the knocking rod 23 extends out of the connecting shell 21 and is fixed to the hammer head 11, and a push pin 24 is fixed to the other end of the knocking rod 23. The push pin 24 contacts with the wave surface 25 at the end of the sleeve 22 and slides along it, so that the knocking rod 23 vibrates axially.

[0021] The sleeve 22 of the utility model and the wavy surface 25 at its end rotate, and the top pin 24 is always in contact with the wavy surface 25 and slides along it, driving the knocking rod 23 and the hammer head 11 to vibrate axially, so as to replace the manual swinging handle 10 of the inspector, and automatically knock on the wall to detect hollow drums, thereby avoiding wrist fatigue and soreness of the inspector caused by long-term use, and is easy to use.

[0022] Preferably, see Figure 2 , 3 The wave surface 25 includes the end surface of the sleeve 22 and multiple groups of groove surfaces 26 evenly arranged along the circumference of the sleeve 22. The ejector pin 24 contacts the end surface of the sleeve 22 and the groove surface 26 and slides along them.

[0023] Preferably, see Figure 2 , 3 The groove surface 26 includes a vertical surface 27, a parallel surface 27, and an inclined surface 29 which are arranged in sequence relative to the end surface of the sleeve 22. One end of the vertical surface 27 is connected to the end surface of the sleeve 22, the other end of the vertical surface 27 is connected to one end of the parallel surface 27, the other end of the parallel surface 27 is connected to one end of the inclined surface 29, and the other end of the inclined surface 29 is connected to the end surface of the sleeve 22.

[0024] The sleeve 22 of the utility model and the wavy surface 25 on its end surface rotate, the ejector pin 24 slides along the end surface of the sleeve 22, and suddenly drops through the vertical surface 27 to contact the parallel surface 27, driving the knocking rod 23 and the hammer head 11 to rapidly vibrate axially to achieve the knocking action, and the ejector pin 24 then slides slowly along the inclined surface 29 to the end surface of the sleeve 22, forming a cycle, and performing the next knocking action.

[0025] Preferably, the other end of the knocking rod 23 is fixed to one side of the connecting disk 31, one side of the connecting disk 31 is fixed to one end of the push pin 24, the other end of the push pin 24 contacts the wavy surface 25 at the end of the sleeve 22 and slides along it, the other side of the connecting disk 31 is fixed to one end of the compression spring 32, and the other end of the compression spring 32 is fixed to the connecting shell 21.

[0026] Preferably, see Figure 2 , 4A moving hole 33 is formed on one side of the connecting shell 21 close to the hammer head 11 , and a knocking rod 23 is slidably mounted in the moving hole 33 . A key slot 34 is formed on the knocking rod 23 , and a key 35 corresponding to the key slot 34 is formed in the moving hole 33 . The key 35 is fixed to the connecting shell 21 .

[0027] Through the above arrangement, the utility model realizes that the knocking rod 23 can only slide along the connecting shell 21 but cannot rotate.

[0028] Preferably, a motor 41 is fixed in the connecting shell 21 , an output shaft of the motor 41 is fixed to a gear 42 , the gear 42 is meshed with a gear ring 43 , and the gear ring 43 is fixed to the outer circumferential surface of the sleeve 22 .

[0029] The handle 10 is provided with a control module, a power module, etc. of the motor 41 , and a switch is provided on the handle 10 for controlling the start and stop of the motor 41 .

[0030] Preferably, a wave surface 25 is provided on one end surface of the sleeve 22 , and the other end surface is fixed to a connecting ring 36 , and the connecting ring 36 is rotatably connected to the connecting shell 21 .

[0031] Preferably, a mounting hole 51 is formed on a side of the connecting shell 21 away from the hammer head 11 , a mounting box 52 is fixed in the mounting hole 51 , and a plurality of spring sheets 53 are fixed in the circumference of the mounting box 52 for mounting and clamping a paintbrush.

[0032] After the wall surface is knocked with the hammer head 11 and hollows are detected, the handle 10 is rotated and the hollows are marked with a paintbrush in the installation box 52, which is convenient for use.

[0033] Preferably, the outer circumferential surface of the handle 10 is provided with anti-slip grooves 12 , and the top end of the handle 10 is slidably connected to a telescopic rod 13 , and the top end of the telescopic rod 13 is fixed to the connecting shell 21 .

[0034] Among them, multiple groups of telescopic rods 13 can be arranged between the handle 10 and the connecting shell 21 to make the hollow drum hammer have a longer use distance. Its structure is the existing technology and will not be repeated here.

[0035] The working principle of the utility model is as follows:

[0036] The inspector holds the handle 10, installs the clamping brush through the installation box 52 and the spring sheet 53, and unfolds the telescopic rod 13; starts the motor 41, and the output shaft of the motor 41 drives the gear 42 to rotate, drives the gear ring 43 and the sleeve 22 to rotate, and the push pin 24 is always in contact with the wave surface 25 and slides along it. Specifically, the push pin 24 slides along the end surface of the sleeve 22, and under the action of the compression spring 32, it suddenly drops through the vertical surface 27 to contact the parallel surface 27, driving the knocking rod 23 and the hammer head 11 to vibrate axially rapidly to achieve the knocking action, and the push pin 24 then slides slowly along the inclined surface 29 to the end surface of the sleeve 22, forming a cycle for the next knocking action; the utility model can replace the manual swinging handle 10 of the inspector, automatically knock on the wall to detect hollow drums, avoid wrist fatigue and soreness of the inspector caused by long-term use, and is easy to use; when hollow drums are detected, the motor 41 is turned off, and the hollow drum is marked with a brush for easy use.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A hollow hammer for engineering supervision, comprising a hammer head (11) arranged at the top of a handle (10), characterized in that: A connecting shell (21) is installed at the top of the handle (10), a sleeve (22) is rotatably provided in the connecting shell (21), a knocking rod (23) is slidably sleeved in the sleeve (22), one end of the knocking rod (23) extends out of the connecting shell (21) and is fixed to the hammer head (11), and a top pin (24) is fixed to the other end of the knocking rod (23), and the top pin (24) contacts and slides along a wave surface (25) at the end of the sleeve (22), so that the knocking rod (23) vibrates axially.

2. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: The wave surface (25) includes an end surface of the sleeve (22) and multiple groups of groove surfaces (26) evenly arranged along the circumference of the sleeve (22). The ejector pin (24) contacts the end surface of the sleeve (22) and the groove surface (26) and slides along them.

3. The hollow drum hammer for engineering supervision according to claim 2, characterized in that: The groove surface (26) comprises a vertical surface (27), a parallel surface (27), and an inclined surface (29) which are arranged in sequence relative to the end surface of the sleeve (22); one end of the vertical surface (27) is connected to the end surface of the sleeve (22); the other end of the vertical surface (27) is connected to one end of the parallel surface (27); the other end of the parallel surface (27) is connected to one end of the inclined surface (29); and the other end of the inclined surface (29) is connected to the end surface of the sleeve (22).

4. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: The other end of the knocking rod (23) is fixed to one side of the connecting disk (31), one side of the connecting disk (31) is fixed to one end of the ejector pin (24), the other end of the ejector pin (24) contacts the wavy surface (25) at the end of the sleeve (22) and slides along the wavy surface (25), the other side of the connecting disk (31) is fixed to one end of the compression spring (32), and the other end of the compression spring (32) is fixed to the connecting shell (21).

5. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: A moving hole (33) is provided on one side of the connecting shell (21) close to the hammer head (11), a knocking rod (23) is slidably mounted in the moving hole (33), a key slot (34) is provided on the knocking rod (23), a key (35) corresponding to the key slot (34) is provided in the moving hole (33), and the key (35) is fixed to the connecting shell (21).

6. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: A motor (41) is fixed inside the connecting shell (21); an output shaft of the motor (41) is fixed to a gear (42); the gear (42) is meshed with a gear ring (43); and the gear ring (43) is fixed to the outer circumferential surface of the sleeve (22).

7. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: A wave surface (25) is provided on one end surface of the sleeve (22), and the other end surface is fixed to a connecting ring (36), and the connecting ring (36) is rotatably connected to the connecting shell (21).

8. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: A mounting hole (51) is provided on a side of the connection shell (21) away from the hammer head (11), a mounting box (52) is fixed in the mounting hole (51), and a plurality of spring sheets (53) are fixed in the circumference of the mounting box (52) for mounting and clamping a paintbrush.

9. The hollow drum hammer for engineering supervision according to claim 1, characterized in that: The outer circumferential surface of the handle (10) is provided with anti-slip grooves (12), the top end of the handle (10) is slidably connected to a telescopic rod (13), and the top end of the telescopic rod (13) is fixed to the connecting shell (21).

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