A rebound hammer for concrete detection with a probe convenient to disassemble

Abstract

The utility model discloses a rebound instrument for concrete detection convenient to detach probe relates to rebound instrument technical field, including rebound instrument, the rebound instrument bottom fixed mounting has the connecting ring, the connecting ring bottom fixed mounting has the connecting pipe, the connecting pipe outer wall rotatory mounting has the hollow screw rod, the hollow screw rod outer wall is connected with trapezoidal slide, trapezoidal slide both sides all fixed mounting has two slide column, the slide column outer wall sliding installation in the inclined groove of the guide plate inner wall opening, in the utility model, through starting motor drive driving gear rotation, and then drive driven gear and hollow screw rod rotate, make trapezoidal slide move, and slide column slides in the inclined groove of guide plate, and make two guide plates translation, drive two clamps relative movement, can directly to different model probe complete clamping, need not extra equip multiple adapter, has reduced use cost.

Description

Technical Field

[0001] This utility model relates to the field of rebound hammer technology, specifically a concrete rebound hammer with an easy-to-disassemble probe. Background Technology

[0002] In the field of concrete testing, rebound hammers are commonly used testing equipment to measure the surface hardness of concrete and then estimate its compressive strength. Among them, rebound hammers for concrete testing with easy-to-disassemble probes are widely used in practice due to their advantages such as convenient probe replacement and adaptability to various testing scenarios.

[0003] Most concrete rebound hammers with easily detachable probes use a method of directly connecting the probe to the main unit via threads. Since different types and specifications of concrete have different requirements for probe size during testing, the existing rebound hammers with detachable probes cannot be directly adapted to probes of various sizes. In order to meet the needs of using probes of different sizes, various different adapters are required. This not only increases the cost of use, but also requires users to prepare and properly store these adapters, causing many inconveniences to actual testing work.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a concrete rebound hammer with an easy-to-disassemble probe, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a concrete rebound hammer with an easy-to-disassemble probe, comprising a rebound hammer body, a connecting ring fixedly installed at the bottom of the rebound hammer body, a connecting pipe fixedly installed at the bottom of the connecting ring, a hollow screw rotatably installed on the outer wall of the connecting pipe, a trapezoidal slider connected to the outer wall of the hollow screw, a screw nut inside the trapezoidal slider, the screw nut cooperating with the hollow screw; two sliding columns fixedly installed on both sides of the trapezoidal slider, the outer walls of the sliding columns slidably installed in inclined grooves opened in the inner wall of the guide plate; a sleeve fixedly installed at the bottom of the hollow screw, two clamping plates slidably installed at the bottom of the sleeve, connecting rods fixedly installed on the side walls of the two clamping plates, and the two connecting rods respectively fixedly connected to the bottom of the two guide plates.

[0007] Preferably, a hollow lead screw is rotatably mounted on the outer wall of the connecting pipe via an external tooth slewing bearing, wherein the external teeth of the external tooth slewing bearing are driven gears; the inner ring of the external tooth slewing bearing is fixedly connected to the outer wall of the connecting pipe, and the outer ring of the external tooth slewing bearing is fixedly connected to the end of the hollow lead screw; a support plate is fixedly mounted on the outer wall of the connecting ring, a motor is fixedly mounted on the bottom of the support plate, a drive gear is fixedly mounted on the drive end of the motor, and the outer wall of the drive gear meshes with the driven gear.

[0008] Preferably, the inner walls of the two clamping plates are clamped and connected to probes, and the inner walls of the probes are slidably mounted with ejector rods. The outer walls of the ejector rods are slidably connected to the inner walls of the connecting pipes, and the inner ends of the ejector rods are engaged with the ejection mechanism inside the main body of the rebound device.

[0009] Preferably, the rebound hammer body is adapted to different models of probes according to different specifications of concrete. The outer diameter of the different probes is between 1 and 3 cm. The outer wall of each probe is in close contact with the inner wall of the clamp, and the bottom of the internal ejection rod extends beyond the bottom of the probe by a certain distance.

[0010] Preferably, the number of support plates is two.

[0011] Preferably, the inclined groove is inclined from the bottom as the axis to both ends, and the inclination angle of the inclined groove is 10 degrees.

[0012] Preferably, a rebound mechanism is provided on the inner side of the rebound device body.

[0013] Preferably, the inner wall of the clamp is provided with a rubber pad, and the surface of the rubber pad is provided with an integrally formed anti-slip texture.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The starting motor drives the drive gear to rotate, which in turn drives the driven gear and the hollow screw to rotate, causing the trapezoidal slider to move. The sliding column slides in the inclined groove of the guide plate, causing the two guide plates to move horizontally, which in turn drives the two clamping plates to move relative to each other. It can directly clamp different types of probes without the need for multiple adapters, thus reducing the cost of use. 2. When it is necessary to replace the probe with a different model to adapt to the testing of concrete of different specifications, simply start the motor in reverse. The two clamps will move in opposite directions to release the current probe. After removing it, install the new probe according to the above installation procedure and continue testing. This replacement method saves time, improves testing efficiency, and can better meet the needs of frequent probe replacement in actual testing work. Attached Figure Description

[0015] Figure 1 A schematic diagram of the front structure of a concrete rebound hammer with an easily detachable probe; Figure 2 A cross-sectional schematic diagram of a concrete rebound hammer with an easily detachable probe. Figure 3 This is an enlarged structural diagram of the disassembly assembly of a concrete rebound hammer for easy probe disassembly. Figure 4 This is a schematic diagram of the bottom structure of the disassembly assembly of a concrete rebound hammer for easy probe disassembly.

[0016] In the diagram: 1. Main body of the rebound hammer; 2. Guide plate; 201. Trapezoidal slider; 202. Hollow lead screw; 203. Driven gear; 204. Motor; 205. Inclined groove; 206. Connecting rod; 207. Clamping plate; 208. Support plate; 209. Sliding column; 210. Drive gear; 211. Sleeve; 3. Probe; 301. Ejector rod; 4. Connecting ring; 5. Connecting pipe. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4 This utility model provides a technical solution: including a rebounder body 1, characterized in that: a connecting ring 4 is fixedly installed at the bottom of the rebounder body 1, a connecting pipe 5 is fixedly installed at the bottom of the connecting ring 4, a hollow screw 202 is rotatably installed on the outer wall of the connecting pipe 5, a trapezoidal slider 201 is connected to the outer wall of the hollow screw 202, the trapezoidal slider 201 has a screw nut inside, the screw nut cooperates with the hollow screw 202; two sliding columns 209 are fixedly installed on both sides of the trapezoidal slider 201, the outer wall of the sliding column 209 is slidably installed in the inclined groove 205 opened in the inner wall of the guide plate 2, a sleeve 211 is fixedly installed at the bottom of the hollow screw 202, two clamping plates 207 are slidably installed at the bottom of the sleeve 211, connecting rods 206 are fixedly installed on the side walls of the two clamping plates 207, and the two connecting rods 206 are respectively fixedly connected to the bottom of the two guide plates 2.

[0019] like Figure 2 and Figure 3 As shown, a hollow lead screw 202 is rotatably mounted on the outer wall of the connecting pipe 5 via an external tooth slewing bearing. The external teeth of the external tooth slewing bearing are driven gears 203. The inner ring of the external tooth slewing bearing is fixedly connected to the outer wall of the connecting pipe 5, and the outer ring of the external tooth slewing bearing is fixedly connected to the end of the hollow lead screw 202. A support plate 208 is fixedly mounted on the outer wall of the connecting ring 4. A motor 204 is fixedly mounted on the bottom of the support plate 208. A drive gear 210 is fixedly mounted on the drive end of the motor 204. The outer wall of the drive gear 210 meshes with the driven gear 203.

[0020] like Figure 2 and Figure 3 As shown, the probe 3 is clamped and connected to the inner wall of the two clamping plates 207. The ejector rod 301 is slidably installed on the inner wall of the probe 3. The outer wall of the ejector rod 301 is slidably connected to the inner wall of the connecting pipe 5, and the inner end of the ejector rod 301 is engaged with the ejection mechanism inside the main body 1 of the rebound device.

[0021] The rebound hammer body 1 is fitted with different models of probes 3 according to different specifications of concrete. The outer diameter of the different probes 3 is between 1 and 3 cm. The outer wall of each probe 3 is in close contact with the inner wall of the clamping plate 207, and the bottom of the internal ejection rod 301 extends beyond the bottom of the probe 3 by a certain distance. Figure 2 As shown.

[0022] like Figure 3 As shown, there are two support plates 208.

[0023] like Figure 3 As shown, the inclined groove 205 is inclined from the bottom axis to both ends, and the inclination angle of the inclined groove 205 is 10 degrees.

[0024] The rebound mechanism is provided on the inner side of the rebounder body 1.

[0025] The inner wall of the clamp 207 is provided with a rubber pad, and the surface of the rubber pad has an integrally formed anti-slip texture.

[0026] Different types of concrete require different probes 3 for testing. This design allows a single rebound hammer body 1 to be compatible with multiple probes 3 without the need for a dedicated connection device for each probe 3, thus enhancing the versatility and applicability of the rebound hammer body 1.

[0027] Please see Figure 2 , Figure 3 This utility model provides a technical solution: a concrete rebound hammer for easy probe disassembly, including a support plate 208 fixedly installed on the outer wall of the connecting ring 4, and a motor 204 fixedly installed at the bottom of the support plate 208. By controlling the start and stop of the motor 204, the hollow screw 202 can be automatically rotated, thereby driving the clamping plate 207 to quickly complete relative or opposite movement, completing the installation and disassembly of the probe 3, simplifying the operation process.

[0028] Please see Figure 1 , Figure 2 This utility model provides a technical solution: a concrete rebound hammer for easy probe disassembly, comprising two clamping plates 207 with probes 3 clamped and connected to the inner walls. Since the probes 3 can be adapted to different models according to different specifications of concrete, a catapult rod 301 is slidably installed on the inner wall of the probes 3, and the outer diameter of different probes 3 is between 1 and 3 cm, which can meet the needs of various common concrete testing scenarios. The outer wall of the catapult rod 301 is slidably connected to the inner wall of the connecting pipe 5 and is engaged with the catapult mechanism inside the rebound hammer body 1, ensuring that the initial position and catapult stroke of the catapult rod 301 remain relatively stable when changing different models of probes 3, thereby ensuring the accurate transmission and release of catapult energy. The outer walls of different probes 3 can fit and abut against the inner wall of the clamping plates 207, and the bottom of the inner catapult rod 301 extends beyond the bottom of the probe 3 by a certain distance.

[0029] Please see Figure 3 This utility model provides a technical solution: a concrete rebound hammer for easy probe disassembly, including two support plates 208. Compared with a single support plate 208, the force acting on the guide plate 2 can be more evenly distributed. The outer walls of the two support plates 208 are slidably connected to the inner top wall of the guide plate 2. During the operation of the equipment, whether it is subjected to its own weight, the inertial force generated by the movement, or the force applied by the outside, the two support plates 208 can jointly bear these forces, avoiding structural damage or deformation due to excessive local stress. The inclined groove 205 is inclined from the bottom axis to both ends, and the inclination angle of the inclined groove 205 is 10 degrees.

[0030] Please see Figure 2 , Figure 4 This utility model provides a technical solution: a concrete testing rebound hammer with easy-to-disassemble probe, including a rebound mechanism provided on the inner wall of the rebound hammer body 1, so the material of the rebound hammer body 1 is stainless steel; the inner wall of the clamping plate 207 is provided with a rubber pad, the rubber pad is soft and has good elasticity and cushioning performance. When the clamping plate 207 clamps the probe 3, the rubber pad can avoid direct rigid contact between the clamping plate 207 and the probe 3, prevent damage to the surface of the probe 3 due to excessive clamping force, and play a role in protecting the probe 3. At the same time, the surface of the rubber pad is provided with an integrally formed anti-slip texture.

[0031] Working principle: Insert the ejector rod 301 on the probe 3 into the connecting tube 5 and engage it with the ejector mechanism inside the main body 1 of the rebound hammer (the engagement structure of different models of ejector rod 301 is consistent). At this time, the start motor 204 drives the drive gear 210 to rotate, which in turn drives the driven gear 203 and the hollow screw 202 to rotate. The rotation of the hollow screw 202 causes the trapezoidal slider 201 to move upward. At this time, the sliding pins 209 on both sides of the trapezoidal slider 201 slide in the inclined groove 205 of the guide plate 2, causing the two guide plates 2 to move horizontally, which in turn drives the two clamping plates 207 to move relative to each other. Different models of probe 3 with an outer diameter between 1 and 3 cm are clamped between the two clamping plates 207. Then, align the bottom of the main body 1 of the rebound hammer with the concrete. To test the concrete surface, ensure that the ejector rod 301 at the bottom of the probe 3 is aligned with the test surface. Press the main body 1 of the rebound hammer to activate its internal rebound mechanism, which will eject the ejector rod 301 toward the concrete test surface. This will measure the surface hardness of the concrete and calculate the compressive strength to complete the test. When it is necessary to replace the probe 3 with a different model to adapt to the test of different specifications of concrete, start the motor 204 in reverse to make the drive gear 210 rotate in reverse, which will drive the driven gear 203 and the hollow screw 202 to rotate in reverse. The trapezoidal slider 201 will move downward, and the sliding column 209 will slide in reverse in the inclined groove 205. The two guide plates 2 will move in opposite directions, and the two clamping plates 207 will move in opposite directions to release the current probe 3. After removing it, install the new probe 3 according to the above installation procedure to continue the test.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A concrete rebound hammer for easy probe disassembly, comprising a rebound hammer body (1), characterized in that: The rebound instrument body (1) is fixedly installed with a connecting ring (4) at the bottom. The connecting ring (4) is fixedly installed with a connecting pipe (5) at the bottom. A hollow screw (202) is rotatably installed on the outer wall of the connecting pipe (5). A trapezoidal slider (201) is connected to the outer wall of the hollow screw (202). The trapezoidal slider (201) has a screw nut inside. The screw nut cooperates with the hollow screw (202). Two sliding columns (209) are fixedly installed on both sides of the trapezoidal slider (201). The outer wall of the sliding column (209) is slidably installed in the inclined groove (205) opened on the inner wall of the guide plate (2). A sleeve (211) is fixedly installed at the bottom of the hollow screw (202). Two clamping plates (207) are slidably installed at the bottom of the sleeve (211). A connecting rod (206) is fixedly installed on the side wall of the two clamping plates (207). The two connecting rods (206) are fixedly connected to the bottom of the two guide plates (2) respectively.

2. A concrete rebound hammer with an easily detachable probe as described in claim 1, characterized in that: A hollow lead screw (202) is rotatably mounted on the outer wall of the connecting pipe (5) via an external tooth slewing bearing. The external teeth of the external tooth slewing bearing are driven gears (203). The inner ring of the external tooth slewing bearing is fixedly connected to the outer wall of the connecting pipe (5), and the outer ring of the external tooth slewing bearing is fixedly connected to the end of the hollow lead screw (202). A support plate (208) is fixedly mounted on the outer wall of the connecting ring (4). A motor (204) is fixedly mounted at the bottom of the support plate (208). A drive gear (210) is fixedly mounted on the drive end of the motor (204), and the outer wall of the drive gear (210) meshes with the driven gear (203).

3. A concrete rebound hammer with an easily detachable probe as described in claim 2, characterized in that: The inner walls of the two clamping plates (207) are clamped and connected to the probe (3). The inner wall of the probe (3) is slidably installed with the ejector rod (301). The outer wall of the ejector rod (301) is slidably connected to the inner wall of the connecting pipe (5), and the inner end of the ejector rod (301) is engaged with the ejection mechanism inside the rebound instrument body (1).

4. A concrete rebound hammer with an easily detachable probe as described in claim 3, characterized in that: The main body (1) of the rebound hammer is adapted to different models of probes (3) according to different specifications of concrete. The outer diameter of the different probes (3) is between 1 and 3 cm. The outer wall of the different probes (3) is in close contact with the inner wall of the clamp (207) and the bottom of the internal ejection rod (301) extends beyond the bottom of the probe (3) by a certain distance.

5. A concrete rebound hammer with an easily detachable probe as described in claim 4, characterized in that: The number of the support plates (208) is two.

6. A concrete rebound hammer with an easily detachable probe as described in claim 5, characterized in that: The inclined groove (205) is inclined from the bottom axis to both ends, and the inclination angle of the inclined groove (205) is 10 degrees.

7. A concrete rebound hammer with an easily detachable probe as described in claim 6, characterized in that: The rebound mechanism is provided on the inner side of the rebound device body (1).

8. A concrete rebound hammer with an easily detachable probe as described in claim 7, characterized in that: The inner wall of the clamp (207) is provided with a rubber pad, and the surface of the rubber pad is provided with an integrally formed anti-slip texture.

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