A concrete strength penetration detection device
By designing a concrete strength penetration testing device with auxiliary supports and limiting devices, the problems of multiple external instruments and difficulty in judging verticality were solved, and the convenient installation of the test nail and the accuracy of the test were achieved.
Patent Information
- Application Number
- CN202511590710.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2045-11-03
AI Technical Summary
Existing concrete strength testing devices require carrying a lot of external equipment and it is difficult to intuitively determine whether the test nail is perpendicular to the wall, which makes the testing process inconvenient.
A concrete strength penetration test device was designed, comprising an auxiliary support, a protective device, an adjustment device, a limiting device, and a switching device. The vertical adjustment of the test nail and the ease of installation are achieved through elastic elements and mechanical structures.
The verticality of the test pin is adjusted by providing elastic force through auxiliary brackets and protective devices, and the limiting device simplifies the installation of the test pin, improving the convenience and accuracy of the test.
Smart Images
Figure CN121068360B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete strength testing, specifically to a concrete strength penetration testing device. Background Technology
[0002] Penetration testing of concrete mortar strength, also known as the penetration method, is an in-situ testing technique used to assess the compressive strength of concrete mortar in masonry structures. This method involves compressing a spring inside the penetration tester. When the spring is compressed to the required working degree, it automatically locks and is released at an appropriate position. The force applied by the spring drives the test pin into the concrete mortar, creating a small hole in the wall surface that does not affect the structure being tested. The depth of the hole is then measured by a depth measuring instrument, thus determining the compressive strength of the concrete mortar.
[0003] During the testing process, in order to ensure stability, the testing personnel need to press the penetration concrete mortar strength tester into contact with the concrete mortar and keep it perpendicular to the wall. However, without external support, it is difficult to intuitively know whether it is perpendicular. Furthermore, when placing the test nail, a nail tightener is needed to tighten it, and then a wrench is needed to hang the internal hook. There are many external tools required, which are troublesome to take out and not easy to carry. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a concrete strength penetration testing device, which solves the problems of requiring numerous external instruments and the inability to visually determine whether the test nail is perpendicular to the wall.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: a concrete strength penetration testing device, comprising: a protective device fixedly connected to the output end of the housing; an auxiliary support fixedly connected to the outer wall of the protective device; a test pin movably connected to the inner side of the protective device; an adjustment device movably connected to the other end of the housing; a switch device fixedly connected to both sides of the outer wall of the housing; and a limit device provided on the inner wall of the housing.
[0008] Preferably, the adjusting device includes a sliding circular plate, a threaded rod, and a rotating handle; the sliding circular plate is slidably connected to the inner wall surface of the housing via sliders on both sides; one end of the threaded rod is rotatably connected to the inner surface of the sliding circular plate; the threaded rod is threadedly connected to the inner wall surface of the housing; and the rotating handle is fixedly connected to the other end of the threaded rod.
[0009] Preferably, the limiting device includes a lever block, a sliding cylinder, an opening and closing piece, an annular dividing plate, a second spring, a first sliding rod, and a limiting block; the annular dividing plate is fixedly connected to the inner wall surface of the housing; the sliding cylinder is slidably connected to the inner wall surface of the housing; the opening and closing piece is a two-half closing structure, which is movably connected to one end of the sliding cylinder by hinges; the lever block is fixedly connected to the other end of the sliding cylinder at a position inside the housing and is slidably connected to the inner wall of the housing.
[0010] Preferably, the sliding cylinder and the actuating block are connected to each other in the inner part of the housing; one end of the first sliding rod is slidably connected to the inner surface of the sliding cylinder; the other end of the first sliding rod is fixedly connected to the side surface of the sliding circular plate; the second spring is sleeved on the outer surface of the first sliding rod; one end of the second spring is fixedly connected to the side surface of the actuating block, and the other end of the second spring is fixedly connected to the side surface of the sliding circular plate; the limiting block is fixedly connected to the outer wall surface of the actuating block located inside the housing.
[0011] Preferably, the switching device includes a handle, a sliding switch, a sliding bar, an inclined sliding block, a limiting rod, a second sliding rod, a first spring, a movable circular plate, and a fourth spring; the handle is fixedly connected to the outer wall of the housing; the sliding switch is slidably connected to the inner surface of the handle; the sliding bar is slidably connected to the inner surface of the handle; one end of the second sliding rod is fixedly connected to the inner surface of the sliding switch located inside the handle; the other end of the second sliding rod is slidably connected to the inner surface of the handle; the first spring is sleeved on the side surface of the second sliding rod; one end of the first spring is fixedly connected to the side surface of the sliding switch, and the other end is fixedly connected to the inner surface of the handle.
[0012] Preferably, the inclined sliding block is slidably connected to the inner surface of the handle; one end of the sliding bar is fixedly connected to the inner surface of the sliding switch; the other end of the sliding bar is slidably connected to the inclined groove of the inclined sliding block via a roller; the limiting rod is fixedly connected to the side surface of the inclined sliding block in the direction of the housing; the movable circular plate is fixedly connected to the outer wall of the limiting rod; one end of the fourth spring is fixedly connected to the side surface of the movable circular plate; and the other end of the fourth spring is fixedly connected to the inner surface of the handle.
[0013] Preferably, the protective device includes a fixed cylinder, a sliding cylinder, a support frame, a U-shaped groove, a damping rod, and auxiliary components; the fixed cylinder is fixedly connected to the output port of the housing; the sliding cylinder is sleeved on the outer wall surface of the fixed cylinder; two U-shaped grooves are respectively symmetrically fixedly connected to the outer wall surface of the fixed cylinder; the damping rod is fixedly connected to the inner wall surface of the sliding cylinder; the sliding cylinder is movably connected to the outer wall surface of the fixed cylinder through the damping rod; the support frame is fixedly connected to the outer wall surface of the sliding cylinder; the auxiliary components are located at the end of the support frame; the sliding groove positions at the bends at both ends of the U-shaped groove are oblique groove spaces that gradually narrow from the outside to the inside.
[0014] Preferably, the auxiliary component includes a third slide rod, a limiting circular plate, a third spring, and a contact circular piece; the third slide rod is slidably connected to the inner surface of the support frame; the limiting circular plate is fixedly connected to the outer wall surface of the third slide rod; the third spring is sleeved on the outer wall of the third slide rod; one end of the third spring is fixedly connected to the side surface of the limiting circular plate; and the other end of the third spring is fixedly connected to the inner surface of the support frame.
[0015] (III) Beneficial Effects
[0016] This invention provides a concrete strength penetration testing device. It has the following beneficial effects:
[0017] 1. By setting up auxiliary brackets and protective devices, the parallelism between the measuring pin and the wall can be intuitively adjusted by the elasticity provided by the third spring and the protrusion of the third slide rod, reducing inaccurate measurements caused by angular tilt. At the same time, the extension of the sliding cylinder also prevents the measuring pin from falling after popping out.
[0018] 2. By setting the lever block and opening / closing plate in the limiting device, the restriction on the test nail is released when the test nail is pushed out, which solves the problem of power loss caused by the pull of the rear spring when the test nail enters the concrete deeply during launch. At the same time, the test nail does not need to be restricted by a wrench and nail tightener when installing the test nail, thus improving the installation efficiency.
[0019] 3. The penetration strength is adjusted by moving the sliding disc through the adjustment device to adjust the compression distance of the second spring. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a concrete strength penetration testing device proposed in this invention.
[0021] Figure 2 This is a schematic diagram of the internal structure of a concrete strength penetration testing device proposed in this invention.
[0022] Figure 3This is a schematic diagram of the adjustment device structure of a concrete strength penetration test device proposed in this invention.
[0023] Figure 4 This is a schematic diagram of the limiting device structure of a concrete strength penetration testing device proposed in this invention.
[0024] Figure 5 This is a schematic diagram of the switching device structure of a concrete strength penetration testing device proposed in this invention.
[0025] Figure 6 For the present invention Figure 5 Enlarged view of section A in the middle;
[0026] Figure 7 This is a schematic diagram of the switching device of a concrete strength penetration testing device proposed in this invention.
[0027] Figure 8 This is a diagram showing the overall position of the test pins in a concrete strength penetration testing device proposed in this invention.
[0028] Figure 9 This is a schematic diagram of the limiting device part of a concrete strength penetration testing device proposed in this invention.
[0029] Figure 10 This is a schematic diagram of the protective device structure of a concrete strength penetration testing device proposed in this invention.
[0030] Figure 11 This is a partial structural schematic diagram of a concrete strength penetration testing device proposed in this invention.
[0031] Figure 12 This is a schematic diagram of the auxiliary component structure of a concrete strength penetration testing device proposed in this invention.
[0032] The components include: 1. Housing; 2. Switching device; 201. Handle; 202. Slide switch; 203. Sliding bar; 204. Inclined sliding block; 205. Limiting rod; 206. Second sliding rod; 207. First spring; 208. Movable circular plate; 209. Fourth spring; 3. Adjusting device; 301. Sliding circular plate; 302. Threaded rod; 303. Rotating handle; 4. Limiting device; 401. Actuating block; 402. Sliding cylinder; 403. 404. Opening / closing plate; 405. Annular dividing plate; 406. Second spring; 407. First sliding rod; 408. Limiting block; 5. Auxiliary bracket; 6. Protective device; 601. Fixed cylinder; 602. Sliding cylinder; 603. Support frame; 604. U-shaped groove; 605. Damping rod; 606. Auxiliary component; 60601. Third sliding rod; 60602. Limiting circular plate; 60603. Third spring; 60604. Contact circular piece; 7. Test pin. Detailed Implementation
[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0034] Example: Figure 1-12 As shown, this embodiment of the invention provides a concrete strength penetration test device, including a housing 1; a protective device 6 is fixedly connected to the output end of the housing 1; an auxiliary support 5 is fixedly connected to the outer wall of the protective device 6; a test nail 7 is movably connected to the inner side of the protective device 6; an adjustment device 3 is movably connected to the other end of the housing 1; a switch device 2 is fixedly connected to both sides of the outer wall of the housing 1; and a limit device 4 is provided on the inner wall of the housing 1.
[0035] like Figure 3 As shown, the adjusting device 3 includes a sliding circular plate 301, a threaded rod 302, and a rotating handle 303; the sliding circular plate 301 is slidably connected to the inner wall surface of the housing 1 via sliders on both sides; one end of the threaded rod 302 is rotatably connected to the inner surface of the sliding circular plate 301; the threaded rod 302 is threadedly connected to the inner wall surface of the housing 1; and the rotating handle 303 is fixedly connected to the other end of the threaded rod 302.
[0036] The penetration strength can be judged by visually observing the compression distance of the second spring 405 through the scale on the surface of the threaded rod 302.
[0037] like Figure 4 , 8As shown in Figure 9, the limiting device 4 includes an actuating block 401, a sliding cylinder 402, an opening and closing piece 403, an annular dividing plate 404, a second spring 405, a first sliding rod 406, and a limiting block 407; the annular dividing plate 404 is fixedly connected to the inner wall surface of the housing 1; the sliding cylinder 402 is slidably connected to the inner wall surface of the housing 1; the opening and closing piece 403 is a two-half closing structure, which is movably connected to one end of the sliding cylinder 402 by hinges; the actuating block 401 is located inside the housing 1 and is fixedly connected to the other end of the sliding cylinder 402, and the actuating block 401 is slidably connected to the inner wall of the housing 1. The sliding cylinder 402 and the lever block 401 are connected to each other in the inner part of the housing 1; one end of the first sliding rod 406 is slidably connected to the inner surface of the sliding cylinder 402; the other end of the first sliding rod 406 is fixedly connected to the side surface of the sliding circular plate 301; the second spring 405 is sleeved on the outer surface of the first sliding rod 406; one end of the second spring 405 is fixedly connected to the side surface of the lever block 401, and the other end of the second spring 405 is fixedly connected to the side surface of the sliding circular plate 301; the limiting block 407 is fixedly connected to the outer wall surface of the lever block 401 located inside the housing 1.
[0038] The housing 1 has a corresponding space between the annular dividing plate 404 and the opening and closing piece 403. After the opening and closing piece 403 moves to the corresponding position, the annular dividing plate 404 opens the opening and closing piece 403, thereby releasing the limitation of the opening and closing piece 403 on the test nail 7.
[0039] like Figure 5-7As shown, the switch device 2 includes a handle 201, a slide switch 202, a sliding bar 203, an inclined sliding block 204, a limiting rod 205, a second sliding rod 206, a first spring 207, a movable circular plate 208, and a fourth spring 209. The handle 201 is fixedly connected to the outer wall of the housing 1; the slide switch 202 is slidably connected to the inner surface of the handle 201; the sliding bar 203 is slidably connected to the inner surface of the handle 201; one end of the second sliding rod 206 is fixedly connected to the inner surface of the slide switch 202 located inside the handle 201; the other end of the second sliding rod 206 is slidably connected to the inner surface of the handle 201; the first spring 207 is sleeved on the side surface of the second sliding rod 206; the first spring 209... One end of spring 207 is fixedly connected to the side surface of slide switch 202, and the other end is fixedly connected to the inner surface of handle 201. Inclined sliding block 204 is slidably connected to the inner surface of handle 201. One end of sliding bar 203 is fixedly connected to the inner surface of slide switch 202. The other end of sliding bar 203 is slidably connected to the inclined groove of inclined sliding block 204 via roller. Limiting rod 205 is fixedly connected to the side surface of inclined sliding block 204 in the direction of housing 1. Movable circular plate 208 is fixedly connected to the outer wall of limiting rod 205. One end of fourth spring 209 is fixedly connected to the side surface of movable circular plate 208. The other end of fourth spring 209 is fixedly connected to the inner surface of handle 201.
[0040] When the sliding switch 202 is pressed, the sliding bar 203 is moved, which in turn moves the inclined sliding block 204, and simultaneously pulls out the limit rod 205. When the sliding switch 202 is released, the limit rod 205 is moved back to its original position by the fourth spring 209, and at the same time the sliding bar 203 is moved back to its original position by the first spring 207.
[0041] like Figure 10-11 As shown, the protective device 6 includes a fixed cylinder 601, a sliding cylinder 602, a support frame 603, a U-shaped groove 604, a damping rod 605, and an auxiliary component 606. The fixed cylinder 601 is fixedly connected to the output port of the housing 1. The sliding cylinder 602 is sleeved on the outer wall surface of the fixed cylinder 601. Two U-shaped grooves 604 are respectively symmetrically fixedly connected to the outer wall surface of the fixed cylinder 601. The damping rod 605 is fixedly connected to the inner wall surface of the sliding cylinder 602. The sliding cylinder 602 is movably connected to the outer wall surface of the fixed cylinder 601 through the damping rod 605. The support frame 603 is fixedly connected to the outer wall surface of the sliding cylinder 602. The auxiliary component 606 is located at the end of the support frame 603. The sliding grooves at the bends at both ends of the U-shaped groove 604 are oblique grooves that gradually narrow from the outside to the inside.
[0042] The outer wall of the damping rod 605 is made of elastic material, and provides frictional damping in the turning grooves at both ends of the movable U-shaped groove 604 to fix it when the sliding cylinder 602 moves.
[0043] like Figure 12 As shown, the auxiliary component 606 includes a third slide rod 60601, a limiting circular plate 60602, a third spring 60603, and a contact circular piece 60604; the third slide rod 60601 is slidably connected to the inner surface of the support frame 603; the limiting circular plate 60602 is fixedly connected to the outer wall surface of the third slide rod 60601; the third spring 60603 is sleeved on the outer wall of the third slide rod 60601; one end of the third spring 60603 is fixedly connected to the side surface of the limiting circular plate 60602; and the other end of the third spring 60603 is fixedly connected to the inner surface of the support frame 603.
[0044] To determine whether the measuring nail 7 is at a 90° angle to the wall, observe whether the end of the third slide rod 60601 moves out of the support frame 603. You can paint a conspicuous color around the third slide rod 60601 for easy observation. The bottom surface of the contact disc 60604 and the bottom surface of the sliding cylinder 602 are on the same horizontal line.
[0045] Working principle: Insert the test pin 7 into the fixed cylinder 601. Then, after the rear end of the test pin 7 is inserted into the bottom of the opening and closing piece 403, continue to press inward while moving the lever block 401 in the direction of the test pin 7. The rear end of the rotating handle 303 is pressed against the body to provide support, thereby moving the lever block 401 to the position of the limiting rod 205. Then, under the action of the fourth spring 209, the limiting rod 205 slides through the inclined surface of the limiting block 407 into the limiting block 407. The lever block 401 is limited in the hole of the part. When the sliding cylinder 402 moves, it drives the opening and closing plate 403 to move. Through the compression of the internal space of the housing 1, the opening and closing plate 403 presses the test nail 7 to limit the test nail 7. The test nail 7 is moved into the housing 1 by the backward movement of the lever block 401. Then, the sliding cylinder 602 is rotated and moved towards the tip of the test nail 7 and rotated again. The friction damping through the contact between the sliding groove inclined surface on the U-shaped groove 604 and the damping rod 605 is achieved. Keep the sliding cylinder 602 stationary, then extend it a certain distance so that the contact disc 60604 contacts the wall. Align the outlet hole of the test nail 7 on the sliding cylinder 602 with the concrete and observe whether the end of the third sliding rod 60601 slides out of the support frame 603 to roughly determine whether the test nail 7 is perpendicular to the wall. Then, press the sliding switch 202 simultaneously to move the sliding bar 203. The roller on the sliding bar 203 and the inclined surface below the inclined sliding block 204 drive the inclined sliding block 204 and the limiting rod 205 to the side, thereby releasing the limit on the lever block 401. Then, the movement of the lever block 401 and the sliding cylinder 402 drives the test nail 7 to move. When the opening and closing plate 403 moves to the position of the annular dividing plate 404, the opening and closing plate 403 opens to release the limit on the test nail 7, allowing the test nail 7 to move freely and impact the concrete wall to leave a hole. Then, use a measuring instrument to measure the depth of the hole.
[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A concrete strength penetration testing device, comprising a housing (1), characterized in that: The output end of the housing (1) is fixedly connected to a protective device (6); an auxiliary bracket (5) is fixedly connected to the outer wall of the protective device (6); a test nail (7) is movably connected to the inner side of the protective device (6); an adjustment device (3) is movably connected to the other end of the housing (1); a switch device (2) is fixedly connected to both sides of the outer wall of the housing (1); a limiting device (4) for launching and limiting the test nail (7) is provided on the inner wall of the housing (1), the limiting device (4) includes a lever block (401), a sliding cylinder (402), an opening and closing plate (403), and an annular dividing plate (404). The housing consists of a second spring (405), a first sliding rod (406), and a limiting block (407); the annular dividing plate (404) is fixedly connected to the inner wall surface of the housing (1); the sliding cylinder (402) is slidably connected to the inner wall surface of the housing (1); the opening and closing piece (403) is a two-half closing structure, which is movably connected to one end of the sliding cylinder (402) by hinges; the annular dividing plate (404) is located on the side of the opening and closing piece (403) away from the second spring (405); the lever block (401) is located inside the housing (1), fixedly connected to the other end of the sliding cylinder (402), and levers... The block (401) is slidably connected to the inner wall of the housing (1); the adjusting device (3) includes a sliding circular plate (301), a threaded rod (302), and a rotating handle (303); the sliding circular plate (301) is slidably connected to the inner wall surface of the housing (1) via sliders on both sides; one end of the threaded rod (302) is rotatably connected to the inner surface of the sliding circular plate (301); the threaded rod (302) is threadedly connected to the inner wall surface of the housing (1); the rotating handle (303) is fixedly connected to the other end of the threaded rod (302); the sliding cylinder (402) and the lever block (401) are located in the housing (1). The inner part is through; one end of the first sliding rod (406) is slidably connected to the inner surface of the sliding cylinder (402); the other end of the first sliding rod (406) is fixedly connected to the side surface of the sliding disc (301); the second spring (405) is sleeved on the outer surface of the first sliding rod (406); one end of the second spring (405) is fixedly connected to the side surface of the lever block (401), and the other end of the second spring (405) is fixedly connected to the side surface of the sliding disc (301); the limiting block (407) is fixedly connected to the outer wall surface of the lever block (401) located inside the housing (1).
2. The concrete strength penetration test device according to claim 1, characterized in that: The switching device (2) includes a handle (201), a sliding switch (202), a sliding bar (203), an inclined sliding block (204), a limiting rod (205), a second sliding rod (206), a first spring (207), a movable circular plate (208), and a fourth spring (209); the handle (201) is fixedly connected to the outer wall of the housing (1); the sliding switch (202) is slidably connected to the inner surface of the handle (201); the sliding bar (203) is slidably connected to the inner surface of the handle (201); one end of the second sliding rod (206) is fixedly connected to the inner surface of the sliding switch (202) located inside the handle (201); the other end of the second sliding rod (206) is slidably connected to the inner surface of the handle (201); the first spring (207) is sleeved on the side surface of the second sliding rod (206); One end of the first spring (207) is fixedly connected to the side surface of the slide switch (202), and the other end is fixedly connected to the inner surface of the handle (201); the inclined sliding block (204) is slidably connected to the inner surface of the handle (201); one end of the sliding bar (203) is fixedly connected to the inner surface of the slide switch (202); the other end of the sliding bar (203) is slidably connected to the inclined groove of the inclined sliding block (204) via a roller; the limiting rod (205) is fixedly connected to the side surface of the inclined sliding block (204) in the direction of the housing (1); the movable circular plate (208) is fixedly connected to the outer wall of the limiting rod (205); one end of the fourth spring (209) is fixedly connected to the side surface of the movable circular plate (208); the other end of the fourth spring (209) is fixedly connected to the inner surface of the handle (201).
3. The concrete strength penetration test device according to claim 1, characterized in that: The protective device (6) includes a fixed cylinder (601), a sliding cylinder (602), a support frame (603), a U-shaped groove (604), a damping rod (605), and an auxiliary component (606); the fixed cylinder (601) is fixedly connected to the output port of the housing (1); the sliding cylinder (602) is sleeved on the outer wall surface of the fixed cylinder (601); two U-shaped grooves (604) are provided, respectively symmetrically fixedly connected to the outer wall surface of the fixed cylinder (601); The damping rod (605) is fixedly connected to the inner wall surface of the sliding cylinder (602); the sliding cylinder (602) is movably connected to the outer wall surface of the fixed cylinder (601) through the damping rod (605); the support frame (603) is fixedly connected to the outer wall surface of the sliding cylinder (602); the auxiliary component (606) is set at the end position of the support frame (603); the sliding groove position at both ends of the U-shaped groove (604) is an oblique groove space that gradually narrows from the outside to the inside.
4. The concrete strength penetration test device according to claim 3, characterized in that: The auxiliary component (606) includes a third slide rod (60601), a limiting circular plate (60602), a third spring (60603), and a contact disc (60604); the third slide rod (60601) is slidably connected to the inner surface of the support frame (603); the limiting circular plate (60602) is fixedly connected to the outer wall surface of the third slide rod (60601); the third spring (60603) is sleeved on the outer wall of the third slide rod (60601); one end of the third spring (60603) is fixedly connected to the side surface of the limiting circular plate (60602); the other end of the third spring (60603) is fixedly connected to the inner surface of the support frame (603); the contact disc (60604) is fixedly connected to the end position of the third slide rod (60601) located in the direction of the tip of the test pin (7).
Citation Information
Patent Citations
Penetration type concrete mortar strength detector
CN119064189A
Concrete quality detector
CN222439508U