Knocking hammer structure for constructional engineering wall surface detection
By designing a wall inspection hammer for building engineering, and utilizing a combination structure of a rod, a striking rod, a marking block, and a striking ball, the problem of the hammer being unable to mark the location of defects was solved, achieving convenient marking and protection, and improving the ease of use and durability.
Patent Information
- Application Number
- CN202520113590.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing hammers cannot mark the location of defects after they are detected, requiring additional markers to be carried. Furthermore, marking directly with the hammer is prone to damage or breakage, making it inconvenient to use.
A wall inspection hammer for building engineering has been designed, comprising a rod, a striking rod, a marking block, and a striking ball. Through the cooperation of threaded connection and limiting block, the defect location can be marked and the length can be adjusted, and an extension is provided for protection.
It enables convenient marking of defect locations during the inspection process, protects the hammer head from damage, and enhances the flexibility and durability of use.
Smart Images

Figure CN223926367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a hammer structure for wall inspection in building engineering. Background Technology
[0002] A construction inspection hammer is a specialized tool used for construction and quality inspection. It typically consists of a hammer head and a handle. The hammer head is usually made of metal. Its main function is to determine the internal condition of a structure by striking its surface and analyzing the sound and vibration feedback. For example, it can detect defects such as hollowness, cracks, and looseness in concrete structures like walls, floors, beams, and columns. It can also be used to check for hollowness in tile adhesion and the welding quality of steel structures.
[0003] Existing hammers cannot mark the location of defects after tapping and identification, which requires additional marking items to be carried during inspection. If the hammer is used directly for marking, the hammer head at the end is easily damaged or broken, which is extremely inconvenient. Therefore, a hammer structure for wall inspection in building engineering is proposed to solve the above-mentioned problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a wall inspection hammer structure for building engineering. It has the advantages of conveniently marking the location of defects, adjustable length, and protection for the hammer. It solves the problems of existing hammers being unable to mark the location of defects after tapping and identification, which requires carrying additional marking items during inspection operations. If the hammer is used directly for marking, the end of the hammer head is easily damaged or broken, which is extremely inconvenient.
[0006] (II) Technical Solution
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A wall surface inspection hammer structure for building engineering includes a rod body, an end of which is provided with a receiving groove, a striking rod is rotatably connected to the inner wall of the receiving groove, a marking block and a striking ball are respectively assembled at both ends of the striking rod, a limiting spring is fixedly installed on the inner wall of the receiving groove, a limiting block is fixedly connected to the other end of the limiting spring and slidably connected to the inner wall of the receiving groove, a toggle block extending to the outside of the limiting block is fixedly installed on the outside of the limiting block, and an extension is slidably connected to the outside of the rod body.
[0008] The beneficial effects of this utility model are:
[0009] The wall inspection hammer structure for this building project has the advantages of conveniently marking the location of defects, adjustable length, and protection for the hammer.
[0010] Based on the above technical solution, the present invention can be further improved as follows.
[0011] Furthermore, the distance from the end of the marking block and the striking ball to the connection point between the striking rod and the receiving groove is equal, and the end of the marking block is provided with a marking engraving block.
[0012] The advantage of adopting the above-mentioned further solution is that the setting of the marking and scribing block can conveniently scribing the target point to generate defect markings.
[0013] Furthermore, the end of the striking rod is provided with a thread, and the marking block and the striking ball are connected to it through the thread at the end of the striking rod.
[0014] The advantage of adopting the above-mentioned further solution is that this arrangement allows the marker block and the hammer to be disassembled for repair or replacement when there is significant wear.
[0015] Furthermore, a limiting groove is provided at the end of the limiting block, and the marking block and the striking ball can extend into the limiting groove.
[0016] The advantage of adopting the above-mentioned further solution is that the setting of the limiting groove can conveniently limit the marking block and the striking ball, preventing them from rotating.
[0017] Furthermore, the extension includes an extension sleeve that fits over the outside of the rod body, with a locking pin threaded to the outer side of the extension sleeve that extends into it and presses against the rod body, and a tubular handle threaded to the inner side of the end of the extension sleeve.
[0018] The beneficial effect of adopting the above-mentioned further solution is that, by setting the extension part, the entire length can be extended by using the extension sleeve in conjunction with the locking pin, thereby increasing the striking coverage of the hammer.
[0019] Furthermore, the extension also includes a threaded piece fixed to the outside of the rod and located at the connection between the receiving groove and the striking rod. The inner side of the end of the tubular handle connected to the extension sleeve is provided with a threaded groove that matches the external thread of the threaded piece. There are two threaded pieces, which are symmetrically distributed on the outside of the rod.
[0020] The advantage of adopting the above-mentioned further solution is that, through this arrangement, the tubular handle can be connected to the extension sleeve while also being connected to that location via a threaded plate. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is an enlarged view of point A in the figure of this utility model;
[0023] Figure 3 This is a top view of the connection between the rod body and the threaded plate of this utility model;
[0024] Figure 4 This is a diagram showing the connection between the tubular handle and the threaded plate of this utility model.
[0025] In the diagram: 1. Rod; 2. Receiving groove; 3. Striking rod; 4. Marking block; 5. Striking ball; 6. Restricting spring; 7. Restricting block; 8. Actuating block; 9. Extension; 91. Extension sleeve; 92. Locking pin; 93. Tubular handle; 94. Threaded plate. Detailed Implementation
[0026] 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.
[0027] In the embodiments, by Figure 1-4 The present invention discloses a wall inspection hammer structure for building engineering. The present invention includes a rod body 1, a receiving groove 2 at one end of the rod body 1, a striking rod 3 rotatably connected to the inner wall of the receiving groove 2, a marking block 4 and a striking ball 5 respectively assembled at both ends of the striking rod 3, a limiting spring 6 fixedly installed on the inner wall of the receiving groove 2, a limiting block 7 slidably connected to the other end of the limiting spring 6, a toggle block 8 extending to the outside of the limiting block 7 fixedly installed on the outside of the limiting block 7, and an extension 9 slidably connected to the outside of the rod body 1.
[0028] Specifically, the marking block 4 and the striking ball 5 are assembled with the striking rod 3 by means of threaded assembly.
[0029] Furthermore, the distance from the end of the marker block 4 and the striking ball 5 to the connection point between the striking rod 3 and the receiving groove 2 is equal, and the end of the marker block 4 is provided with a marking block.
[0030] Furthermore, the end of the striking rod 3 is provided with threads, and the marking block 4 and the striking ball 5 are connected to it through the threads at the end of the striking rod 3.
[0031] Furthermore, a limiting groove is provided at the end of the limiting block 7, and the marking block 4 and the striking ball 5 can extend into the limiting groove.
[0032] Under normal conditions, the limiting block 7 is pushed by the limiting spring 6 to connect with the end of the marking block 4 or the striking ball 5, so that the striking rod 3 cannot rotate. When it is necessary to adjust the end, the limiting block 7 can be moved by the toggle block 8 to disengage it from the marking block 4 or the striking ball 5, so that the striking rod 3 can be rotated to the other end located outside the receiving groove 2, thereby completing the conversion between detection and marking.
[0033] Furthermore, the extension 9 includes an extension sleeve 91 that is sleeved on the outside of the rod body 1. The outer side of the extension sleeve 91 is threaded with a locking pin 92 that extends into it and presses against the rod body 1. The inner side of the end of the extension sleeve 91 is threaded with a tubular handle 93.
[0034] Furthermore, the extension 9 also includes a threaded piece 94 fixed to the outside of the rod body 1 and located at the connection between the receiving groove 2 and the striking rod 3. The inner side of the end of the tubular handle 93 connected to the extension sleeve 91 is provided with a threaded groove that matches the external thread of the threaded piece 94. There are two threaded pieces 94, which are symmetrically distributed on the outside of the rod body 1.
[0035] Under normal conditions, the position of the extension sleeve 91 is locked by the locking pin 92, keeping it at a certain length. When the length needs to be adjusted, the locking pin 92 can be loosened so that it is no longer pressed against the rod body 1. At this time, the position of the extension sleeve 91 can be adjusted. After the adjustment is completed, the position can be locked again by the locking pin 92.
[0036] Meanwhile, after the inspection and marking are completed, the tubular handle 93 can be removed and then connected by the threaded plate 94. At this time, the tubular handle 93 can cover the striking rod 3 at its end and the marking block 4 and striking ball 5 at its end, preventing damage to the marking block 4 and striking ball 5 during walking or other conditions.
[0037] Working principle:
[0038] When using this device, the overall length can be adjusted directly through the extension 9, and the hammer 5 can be adjusted to the front end. At this time, you can start hammering directly to confirm the location of the building defect. After the location of the building defect is determined, the hammer rod 3 can be adjusted again so that the marking block 4 is at the front end. At this time, the defect point can be marked. After the marking is completed, the tubular handle 93 can be connected to the threaded plate 94 to give it a certain protective performance.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A construction engineering wall detection hammer structure comprising a rod body (1), characterized in that: The end of the rod body (1) is provided with a containing groove (2), the inner wall of the containing groove (2) is rotationally connected with a knocking rod (3), the two ends of the knocking rod (3) are respectively equipped with a mark block (4) and a knocking ball (5), the inner wall of the containing groove (2) is fixedly installed with a limiting spring (6), the other end of the limiting spring (6) is fixedly connected with a limiting block (7) which is slidingly connected with the inner wall of the containing groove (2), the outer side of the limiting block (7) is fixedly installed with a poking block (8) which extends to the outside, the outer side of the rod body (1) is slidingly connected with an extending piece (9).
2. A construction engineering wall surface detection hammering hammer structure according to claim 1, characterized in that: The end of the mark block (4) and the knocking ball (5) is equal to the distance from the connection point of the knocking rod (3) and the containing groove (2), the end of the mark block (4) is provided with a mark marking block.
3. A construction engineering wall surface detection hammering hammer structure according to claim 1, characterized in that: The end of the knocking rod (3) is provided with a thread, the mark block (4) and the knocking ball (5) are connected with the knocking rod (3) through the thread at the end of the knocking rod (3).
4. A construction engineering wall surface detection hammering hammer structure according to claim 1, characterized in that: The end of the limiting block (7) is provided with a limiting groove, the mark block (4) and the knocking ball (5) can extend to the inside of the limiting groove.
5. A construction engineering wall detection hammering hammer structure according to claim 1, characterized in that: The extending piece (9) comprises an extending sleeve rod (91) which is sleeved on the outer side of the rod body (1), the outer side of the extending sleeve rod (91) is threadedly connected with a locking pin (92) which extends to the inside and is extruded with the rod body (1), the end of the extending sleeve rod (91) is threadedly connected with a tubular handle (93) on the inner side.
6. A construction engineering wall detection hammering hammer structure according to claim 5, characterized in that: The extending piece (9) further comprises a threaded sheet (94) which is fixed to the outer side of the rod body (1) and is located at the connecting position of the containing groove (2) and the knocking rod (3), the inner side of one end of the tubular handle (93) and the extending sleeve rod (91) is provided with a thread groove which is matched with the thread on the outer side of the threaded sheet (94), the number of the threaded sheets (94) is two and they are symmetrically distributed on the outer side of the rod body (1).