Portable hammering device for rapidly detecting strength of masonry mortar

Abstract

The utility model relates to the technical field of building construction quality detection, and discloses a portable masonry mortar strength rapid detection hammering device which comprises a hammering rod, a hammering head is installed at the top of the hammering rod, an adjusting mechanism is arranged at the bottom of the hammering rod, and a handle mechanism is fixedly connected to the bottom of the adjusting mechanism. The adjusting mechanism comprises a fixing frame, the top of the fixing frame makes contact with the bottom of the hammering rod, a rotating shaft is rotationally connected to the interior of the fixing frame, an adjusting knob is slidably connected to the right side of the rotating shaft, a first bevel gear is fixedly connected to the left side of the rotating shaft, and a second bevel gear is rotationally connected to the interior of the fixing frame. According to the utility model, through simple hammering action, multiple detections can be completed in a short time, the detection efficiency is improved, and the device is particularly suitable for quickly acquiring mortar strength data in a construction site, can meet the detection requirements of different types of mortar and expands the application range.

Description

Technical Field

[0001] This utility model relates to the field of building construction quality testing technology, and in particular to a portable hammering device for rapid testing of masonry mortar strength. Background Technology

[0002] Mortar strength testing is an important task involving the strength performance testing of mortar used in masonry projects. In building construction, mortar plays a crucial role in bonding bricks and other masonry materials, and its strength directly affects the safety and stability of the masonry structure. During testing, mortar test blocks are typically prepared on-site according to regulations, cured under standard conditions to the specified age, and then pressure is applied to the test blocks using a compression testing machine to determine their compressive strength value. The strength data obtained from the test is compared with the mortar strength grade required by the design to determine whether the mortar meets the project quality requirements.

[0003] In construction engineering, core drilling and rebound hammer testing are two commonly used methods for testing concrete strength, each suitable for different scenarios. Core drilling is a semi-destructive testing technique. A cylindrical core sample is drilled from the concrete structure using a specialized drilling rig. After cutting and grinding, the compressive strength of the core sample is measured using a pressure testing machine, directly reflecting the actual strength of the concrete. Rebound hammer testing, on the other hand, is a non-destructive testing technique. A rebound hammer is used to strike the concrete surface, and the rebound value is measured and corrected for carbonation depth to estimate the concrete strength. Both methods are simple, quick, and low-cost, allowing for rapid testing over large areas.

[0004] However, core drilling requires specialized equipment for drilling and core extraction, which is cumbersome, causes significant damage to the masonry structure, and makes subsequent repair work complex. While rebound hammer testing is relatively simple, it is greatly affected by factors such as the operator's technique and the accuracy of the rebound hammer calibration, resulting in unstable data accuracy. The main drawbacks of existing technologies are their complexity, high professional requirements for operators, low testing efficiency, and the fact that some methods can cause damage to the masonry structure, affecting its safety and integrity. This is especially problematic at construction sites where the testing environment is complex and variable, and the portability and ease of operation of existing equipment fall far short of practical needs. Therefore, a portable rapid testing hammer device for masonry mortar strength is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a portable hammering device for rapid testing of masonry mortar strength. It aims to improve the problems of existing rapid testing hammering devices for masonry mortar strength that are complicated to operate, require high professional skills from testing personnel, have low testing efficiency, and cause some damage to the masonry structure, affecting the safety and integrity of the structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a portable rapid strength testing hammer device for masonry mortar, comprising a hammer rod, a hammer head mounted on the top of the hammer rod, an adjustment mechanism provided at the bottom of the hammer rod, and a handle mechanism fixedly connected to the bottom of the adjustment mechanism; the adjustment mechanism includes a fixed frame, the top of the fixed frame contacting the bottom of the hammer rod, a rotating shaft rotatably connected inside the fixed frame, an adjustment knob slidably connected to the right side of the rotating shaft, a first bevel gear fixedly connected to the left side of the rotating shaft, a second bevel gear rotatably connected inside the fixed frame, a screw fixedly connected to the top of the second bevel gear, guide components provided on both the left and right sides inside the hammer rod, and a locking component provided inside the adjustment knob.

[0007] The above technical solution allows for precise control of the hammering force by adjusting the position of the hammer rod, adapting to the testing needs of different types of mortar; the guide component ensures smooth movement of the hammer rod, improving testing accuracy; the locking component locks the adjustment position, ensuring stable hammering effect; and the handle mechanism facilitates user grip and operation, making the entire testing process safe, efficient, and accurate.

[0008] Further description of the above technical solution:

[0009] Both of the guide components include guide frames, which are externally slidably connected to the interior of the hammer rod. Guide grooves are provided on both the left and right sides of the interior of the hammer rod.

[0010] The above technical solution ensures the stability of the hammer rod during its up-and-down movement as the screw rotates, preventing swaying or deviation. This makes the hammering action more stable and precise, thereby improving the accuracy of strength testing results for different types of mortar.

[0011] As a further description of the above technical solution:

[0012] The locking assembly includes two locking pins, the right sides of which are fixedly connected to the left side of the adjusting knob. The right side of the fixed frame has multiple locking slots. A spring is sleeved on the outside of the rotating shaft. A limit groove is opened inside the adjusting knob. A limit plate is fixedly connected to the right side of the rotating shaft. A guide rod is fixedly connected inside the limit plate. Two sliding grooves are opened inside the adjusting knob.

[0013] The above technical solution ensures that the hammer rod will not shift due to vibration or other factors during the hammering test by precisely locking the adjustment position of the hammer rod, thus maintaining a stable hammering force, guaranteeing the reliability of the test results, and meeting the needs of precise control of hammering force for strength testing of different types of mortar.

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

[0015] The handle mechanism includes a hammer handle, the top of which is fixedly connected to the bottom of the hammer rod, and the outside of the hammer handle is provided with anti-slip texture.

[0016] Through the above technical solution, the hammer handle provides the user with a point of force, enabling the user to easily control the hammering action. The anti-slip texture increases the friction between the handle and the hand, effectively preventing the handle from slipping due to factors such as sweaty hands or uneven force during hammering, ensuring the safety of the operation process, thereby ensuring that the hammering test can be carried out stably, improving the accuracy of the test results, and meeting the actual operation needs of various mortar strength tests.

[0017] As a further description of the above technical solution:

[0018] The first bevel gear and the second bevel gear are meshed together, and the bottom of the screw is rotatably connected to the top of the fixed frame.

[0019] The above technical solution involves the meshing transmission of bevel gear one and bevel gear two, which converts the rotation of the adjustment knob into the rotation of the screw. The screw is then connected to the hammer rod by a thread to adjust the position of the hammer rod, thereby controlling the hammering force. This meets the diverse hammering force requirements of different types of mortar strength testing and ensures that the testing work can be carried out accurately and effectively.

[0020] As a further description of the above technical solution:

[0021] The guide frame is externally slidably connected to the inside of the guide groove, and the screw is externally threadedly connected to the inside of the hammer rod.

[0022] The above technical solution, through the cooperation of the guide frame and the guide groove, ensures the stability of the hammer rod during movement, avoids shaking or deviation, and improves the accuracy of hammering.

[0023] As a further description of the above technical solution:

[0024] One end of the spring is fixedly connected to the inside of the adjusting knob, and the other end of the spring is fixedly connected to the left side of the limiting plate.

[0025] Through the above technical solution: the spring utilizes its own elastic properties to provide the power to reset after adjustment, pushing the adjustment knob back to the initial locked position, so that the locking pin re-engages into the corresponding slot on the fixed frame, thereby locking the adjustment position of the hammer rod. This ensures that the hammer rod remains in the set position during subsequent hammering tests, ensuring stable hammering force, thereby improving the accuracy and reliability of the test results and meeting the needs of strength testing for different types of mortar.

[0026] As a further description of the above technical solution:

[0027] The guide rod is externally slidably connected to the inside of the groove, and the locking pin is externally slidably connected to the inside of the groove.

[0028] Through the above technical solution: the cooperation between the guide rod and the slide groove realizes the effective transmission of the rotational motion of the adjustment knob, providing a power transmission path for adjusting the position of the hammer rod; the cooperation between the locking pin and the locking groove realizes the locking and unlocking of the position of the adjustment knob, thereby accurately locking the adjustment position of the hammer rod, ensuring that the hammer rod can hammer at the set position and force during hammering detection.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, during operation, testing personnel can quickly master the technology without complex professional training. When the adjustment knob is pulled, the limiting plate slides in the limiting groove and the guide rod slides in the sliding groove, causing the locking column to disengage from the locking groove. Then, the adjustment knob can be rotated to adjust the position of the hammer rod. The whole process is simple and intuitive, greatly reducing the testing threshold. It enables testing personnel to quickly test the mortar strength in environments such as construction sites. No complex equipment or professional personnel are required. Multiple tests can be completed in a short time through simple hammering actions, improving testing efficiency. It is particularly suitable for quickly obtaining mortar strength data at construction sites and can adapt to different types of mortar testing needs, expanding the application range.

[0031] 2. In this invention, the adjusting knob is locked in place by the tight fit between the locking post and the locking slot, thus ensuring the fixed position of the hammer rod. During subsequent hammering operations, the hammer rod will not change position due to external interference or hammering vibration, ensuring that each hammering strike is accurately applied to the mortar surface with the preset force and position. This greatly guarantees the stability and consistency of the hammering effect, avoiding the problem of unstable hammering force caused by changes in the position of the hammer rod, which would affect the accuracy of the test results. This provides a solid guarantee for obtaining reliable mortar strength test data. Attached Figure Description

[0032] Figure 1This is a perspective view of a portable hammering device for rapid strength testing of masonry mortar proposed in this utility model;

[0033] Figure 2 This is a schematic diagram of the adjustment knob structure of a portable hammering device for rapid strength testing of masonry mortar proposed in this utility model;

[0034] Figure 3 This is a schematic diagram of the screw structure of a portable hammering device for rapid strength testing of masonry mortar proposed in this utility model;

[0035] Figure 4 This is a schematic diagram of the fixed frame structure of a portable hammering device for rapid strength testing of masonry mortar proposed in this utility model.

[0036] Legend:

[0037] 1. Hammering rod; 2. Hammering head; 3. Adjustment mechanism; 31. Fixing frame; 32. Rotating shaft; 33. Adjustment knob; 34. Bevel gear one; 35. Bevel gear two; 36. Screw; 37. Guide assembly; 3701. Guide frame; 3702. Guide groove; 38. Locking assembly; 3801. Locking post; 3802. Locking groove; 3803. Spring; 3804. Limiting groove; 3805. Guide rod; 3806. Slide groove; 3807. Limiting plate; 4. Handle mechanism; 41. Hammering handle; 42. Anti-slip texture. Detailed Implementation

[0038] 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.

[0039] Reference Figures 2 to 4This utility model provides an embodiment of a portable rapid strength testing device for masonry mortar, comprising a hammer rod 1, which is the core structure of the entire device for performing the hammering action. The hammer rod 1 is engraved with scales, and a hammer head 2 is mounted on the top of the hammer rod 1. The hammer head 2 directly acts on the surface of the mortar being tested. An adjustment mechanism 3 is provided at the bottom of the hammer rod 1, and a handle mechanism 4 is fixedly connected to the bottom of the adjustment mechanism 3. The adjustment mechanism 3 includes a fixed frame 31, the top of which contacts the bottom of the hammer rod 1, and a rotating shaft 32 is rotatably connected inside the fixed frame 31. An adjustment knob 33 is slidably connected to the right side of the rotating shaft 32, and a bevel gear 34 is fixedly connected to the left side of the rotating shaft 32. When the adjustment knob 33 is rotated, it can drive the rotating shaft 32 to rotate together through the guide rod 3805, thereby driving the bevel gear 34 to rotate. A bevel gear 35 is rotatably connected inside the fixed frame 31. The bevel gear 34 and the bevel gear 35 are meshed. When the bevel gear 34 rotates, the bevel gear 35 rotates along with it under the meshing action, thereby driving the screw 36 to convert the rotational motion into linear motion, thereby realizing the adjustment of the position of the hammer rod 1.

[0040] A screw 36 is fixedly connected to the top of bevel gear 35. When the adjusting knob 33 drives the rotating shaft 32 to rotate, bevel gear 34 rotates accordingly. Through meshing with bevel gear 35, the rotational motion of the rotating shaft 32 is transmitted to bevel gear 35, thereby driving the screw 36 to rotate. The bottom of the screw 36 is rotatably connected to the top of the fixed frame 31. The external thread of the screw 36 is connected to the inside of the hammer rod 1. When the screw 36 rotates, due to the action of the thread, the hammer rod 1 will move up and down along the axis of the screw 36, thereby realizing the adjustment of the initial position of the hammer rod 1. The hammer rod 1 is equipped with guide components 37 on both the left and right sides inside. Each guide component 37 includes a guide frame 3701. The two guide frames 3701 are slidably connected to the inside of the hammer rod 1. Guide grooves 3702 are opened on both the left and right sides inside the hammer rod 1. The guide frames 3701 are slidably connected to the inside of the guide grooves 3702. The guide grooves 3702 ensure that the guide frames 3701 can effectively guide the hammer rod 1 and guide the hammer rod 1 to move up and down smoothly. The adjusting knob 33 is equipped with a locking component 38 inside.

[0041] Specifically, by pulling the adjustment knob 33, the limiting plate 3807 and guide rod 3805 are activated, causing the locking pin 3801 to disengage from the locking slot 3802. At this time, rotating the adjustment knob 33 drives the rotating shaft 32 with the help of the guide rod 3805, which in turn drives the bevel gear 34 to rotate. Through the meshing transmission of bevel gear 34 and bevel gear 35, the screw 36 is driven to rotate. The screw 36 is connected to the hammer rod 1 by a thread, causing the hammer rod 1 to move up and down along the axis. At the same time, the guide frame 3701 in the guide assembly 37 slides in the guide groove 3702 to ensure the smooth movement of the hammer rod 1, thereby adjusting the initial position of the hammer rod 1 and accurately controlling the hammering force. After the adjustment is completed, the locking assembly 38 can lock the position of the hammer rod 1 to ensure the stability and consistency of the hammering effect, and ultimately meet the needs of strength testing of different types of mortar.

[0042] Reference Figure 1 , Figure 2 and Figure 4 The locking component 38 includes two locking posts 3801, the right sides of which are fixedly connected to the left side of the adjusting knob 33. The right side of the fixing frame 31 has multiple slots 3802. By selecting different slots 3802, the user can precisely set the initial position of the hammer rod 1, thereby adjusting the hammering force to meet the needs of different types of mortar testing. The locking posts 3801 are externally slidably connected to the inside of the slots 3802. When the user pulls the adjusting knob 33, the locking posts 3801 are subjected to external force. The conical head disengages from the slot 3802, at which point the user can freely rotate the adjustment knob 33. A spring 3803 is sleeved on the outside of the rotating shaft 32. One end of the spring 3803 is fixedly connected to the inside of the adjustment knob 33, and the other end of the spring 3803 is fixedly connected to the left side of the limit plate 3807. The main function of the spring 3803 is to provide a reset elastic force after the user releases the adjustment knob 33, so that the adjustment knob 33 can automatically return to the locked position, and the locking post 3801 re-engages into the slot 3802.

[0043] The adjustment knob 33 has a limiting groove 3804 inside, which limits the axial displacement range of the limiting plate 3807 inside the adjustment knob 33. The limiting plate 3807 is fixedly connected to the right side of the rotating shaft 32. The function of the limiting plate 3807 is to limit the axial displacement range of the adjustment knob 33 on the rotating shaft 32 and prevent the adjustment knob 33 from disengaging from the rotating shaft 32 during adjustment. A guide rod 3805 is fixedly connected inside the limiting plate 3807. The function of the guide rod 3805 is to transmit the rotational motion of the adjustment knob 33 to the rotating shaft 32 when the adjustment knob 33 is rotated, thereby driving the bevel gear 34 to rotate. The adjustment knob 33 has two sliding grooves 3806 inside, and the guide rod 3805 is slidably connected to the inside of the sliding grooves 3806. The sliding grooves 3806 can provide a smooth sliding channel for the guide rod 3805.

[0044] Specifically, when the user pulls the adjustment knob 33, the adjustment knob 33 can rotate freely; one end of the spring 3803, which is sleeved on the rotating shaft 32, is connected to the inside of the adjustment knob 33, and the other end is connected to the left side of the limiting plate 3807. After the adjustment knob 33 is released, the spring 3803 provides a restoring force to return the adjustment knob 33 to its original position, and the locking pin 3801 re-engages into the locking groove 3802; the limiting groove 3804 inside the adjustment knob 33 cooperates with the limiting plate 3807 fixed on the right side of the rotating shaft 32 to limit the adjustment. The knob 33 moves axially, and at the same time, the guide rod 3805 inside the limiting plate 3807 slides in the sliding groove 3806 inside the adjusting knob 33, transmitting the rotation of the adjusting knob 33 to the rotating shaft 32 to drive the bevel gear 34 to rotate. Through the cooperation of the locking pin 3801 and different locking grooves 3802, the initial position of the hammer rod 1 is precisely set, realizing the adjustment of the hammering force to meet different mortar testing requirements, and ensuring the safety and stability of the adjustment process. After the adjustment is completed, the position of the hammer rod 1 can be locked to ensure the hammering effect.

[0045] Reference Figures 1 to 2 The handle mechanism 4 includes a hammer handle 41, which is the part that the user holds to perform hammering operations. The top of the hammer handle 41 is fixedly connected to the bottom of the hammer rod 1. The hammer handle 41 has anti-slip texture 42 on its outer surface. The anti-slip texture 42 can increase the friction between the user's hand and the handle, preventing the handle from slipping due to sweaty hands or other reasons during hammering, thus improving the safety of operation.

[0046] Specifically, when conducting the test, the user holds the hammer handle 41 and applies force with their hand to move the entire device, thereby causing the hammer head 2 at the top of the hammer rod 1 to hammer the mortar surface. The anti-slip texture 42 on the outside of the hammer handle 41 increases the friction between the user's hand and the handle, effectively preventing the handle from slipping due to sweaty hands or other factors during the hammering process. This greatly improves the safety of the operation, allowing the user to complete the hammering action stably and safely, and ensuring the smooth progress of the testing process.

[0047] Working Principle: When using this portable mortar strength rapid testing hammer device, first select the appropriate hammering force according to the type of mortar being tested. Then, pull the adjusting knob 33 to cause displacement, allowing it to slide outside the rotating shaft 32. This causes the limiting plate 3807 to slide inside the limiting groove 3804, and the guide rod 3805 to slide inside the sliding groove 3806. This compresses the spring 3803, causing the locking pin 3801 to disengage from the locking groove 3802. Rotating the adjusting knob 33 then drives the bevel gear 34 to rotate via the guide rod 3805 and the rotating shaft 32. The meshing connection between bevel gear 34 and bevel gear 35 causes bevel gear 35 to rotate, which in turn drives... When the moving screw 36 rotates, the hammer rod 1 can be moved upward by the threaded connection between the screw 36 and the hammer rod 1, thereby adjusting the initial position of the hammer rod 1 to achieve the required hammering force. Then, the adjustment knob 33 can be released, and the spring force of the spring 3803 can cause the locking pin 3801 to reset, thereby locking into the inside of the locking slot 3802 in different positions, thus locking the position of the hammer rod 1. Then, the hammer handle 41 can be held, and the hammer head 2 can be placed vertically on the mortar surface, keeping the hammer handle 41 perpendicular to the ground. Then, the mortar surface can be struck quickly and forcefully, causing the hammer head 2 to generate impact. After hammering, the change of the scale above the hammer head 2 can be observed, and the rebound height of the hammer head 2 can be recorded. Then, the corresponding mortar strength value can be found by comparing it with the preset standard curve.

[0048] 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 strength rapid detection hammering device, comprising a hammering rod (1), characterized in that: The hammer rod (1) is equipped with a hammer head (2) at the top and an adjustment mechanism (3) is provided at the bottom of the hammer rod (1). A handle mechanism (4) is fixedly connected to the bottom of the adjustment mechanism (3). The adjustment mechanism (3) includes a fixed frame (31), the top of which is in contact with the bottom of the hammer rod (1). A rotating shaft (32) is rotatably connected inside the fixed frame (31). An adjustment knob (33) is slidably connected to the right side of the rotating shaft (32). A bevel gear (34) is fixedly connected to the left side of the rotating shaft (32). A bevel gear (35) is rotatably connected inside the fixed frame (31). A screw (36) is fixedly connected to the top of the bevel gear (35). Guide components (37) are provided on both the left and right sides inside the hammer rod (1). A locking component (38) is provided inside the adjustment knob (33).

2. The portable hammering device for rapid strength testing of masonry mortar according to claim 1, characterized in that: Both of the guide components (37) include guide frames (3701), and the two guide frames (3701) are externally slidably connected to the inside of the hammer rod (1). Guide grooves (3702) are provided on the left and right sides of the inside of the hammer rod (1).

3. The portable masonry mortar strength rapid detection hammering device according to claim 1, characterized in that: The locking assembly (38) includes two locking pins (3801), the right sides of which are fixedly connected to the left side of the adjusting knob (33). The right side of the fixed frame (31) has multiple locking slots (3802). The outside of the rotating shaft (32) is fitted with a spring (3803). The inside of the adjusting knob (33) has a limiting groove (3804). The right side of the rotating shaft (32) is fixedly connected to a limiting plate (3807). The inside of the limiting plate (3807) is fixedly connected to a guide rod (3805). The inside of the adjusting knob (33) has two sliding grooves (3806).

4. The portable hammering device for rapid strength testing of masonry mortar according to claim 1, characterized in that: The handle mechanism (4) includes a hammer handle (41), the top of which is fixedly connected to the bottom of the hammer rod (1), and the outside of the hammer handle (41) is provided with anti-slip texture (42).

5. The portable hammering device for rapid strength testing of masonry mortar according to claim 4, characterized in that: The first bevel gear (34) and the second bevel gear (35) are meshed together, and the bottom of the screw (36) is rotatably connected to the top of the fixed frame (31).

6. The portable hammering device for rapid strength testing of masonry mortar according to claim 2, characterized in that: The guide frame (3701) is externally slidably connected to the inside of the guide groove (3702), and the screw (36) is externally threadedly connected to the inside of the hammer rod (1).

7. A portable hammering device for rapid testing of masonry mortar strength according to claim 3, characterized in that: One end of the spring (3803) is fixedly connected to the inside of the adjusting knob (33), and the other end of the spring (3803) is fixedly connected to the left side of the limiting plate (3807).

8. A portable hammering device for rapid strength testing of masonry mortar according to claim 3, characterized in that: The guide rod (3805) is externally slidably connected to the inside of the groove (3806), and the locking post (3801) is externally slidably connected to the inside of the groove (3802).

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