Measuring tool for engineering supervision

Abstract

The utility model discloses a measuring tool for engineering supervision, which relates to the technical field of constructional engineering measuring equipment and comprises a shell, a pressing plate arranged in the shell, an ejector rod in sliding connection with the shell and an impact hammer, and one side of the pressing plate is fixedly connected with a guide rod in sliding connection with the ejector rod; the surface of the shell communicates with a cavity, a first limiting clamping block connected with the pressing plate in a clamped mode is hinged to the interior of the cavity, and an elastic piece is fixedly connected between the first limiting clamping block and the cavity. The cavity is formed in the shell, the first limiting clamping block is installed in the cavity, the first limiting clamping block can be clamped when the pressing plate is not used, and when the pressing plate is used, the first limiting clamping block is limited in the cavity through insertion of the ejection block, so that the clamping end of the first limiting clamping block is prevented from entering the shell, and the pressing plate is prevented from being damaged. And the phenomenon of clamping with the pressure spring is avoided, and the normal use of the rebound apparatus is ensured.

Description

Technical Field

[0001] This utility model relates to the field of building engineering surveying equipment technology, specifically a surveying tool for engineering supervision. Background Technology

[0002] In the building engineering testing room, supervisors often use rebound hammers, which are non-destructive testing instruments used to test the compressive strength of ordinary concrete in general building structures or components. They can also be used to test the strength of rock masses.

[0003] Currently, rebound hammers still have some problems in use. For example, in traditional rebound hammers, the pressure spring is installed inside the housing, and the button used to limit the guide plate extends from the surface of the housing to the inside. During long-term use, frequent use, or external impact, the pressure spring may deform. For instance, if the rebound hammer is accidentally dropped on the ground, the pressure spring may deform due to the violent impact, causing its position inside the rebound hammer to shift and become stuck by the button. Alternatively, the parts that fix the button may become loose or damaged, causing the button's position inside the rebound hammer to change, easily interfering with the pressure spring and causing the pressure spring to become stuck. All of these issues affect the normal use of the rebound hammer. Utility Model Content

[0004] The purpose of this invention is to provide a measuring tool for engineering supervision to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a shell, a pressure plate disposed inside the shell, a top rod slidably connected to the shell, and a counterattack hammer, wherein a guide rod slidably connected to the top rod is fixedly connected to one side of the pressure plate;

[0006] The surface of the outer shell is connected to a cavity, and a first limiting block that engages with a pressure plate is hinged inside the cavity. An elastic sheet is fixed between the first limiting block and the cavity, and a top block that cooperates with the first limiting block is inserted into one side of the cavity.

[0007] In a further embodiment, a cover is screwed to one end of the outer shell, and a pressure spring is engaged between the cover and the pressure plate.

[0008] In a further embodiment, a second limiting block is hinged in the groove of the pressure plate, the second limiting block is engaged with the locking position of the counterattack hammer, and a support spring is assembled between the second limiting block and the pressure plate.

[0009] In a further embodiment, a spring is fixed between the counter-attack hammer and the outer casing, and the spring is sleeved on the surface of the top rod.

[0010] In a further embodiment, a buffer spring is internally engaged with the top rod, and the buffer spring works in conjunction with the guide rod.

[0011] In a further embodiment, the surface of the outer casing is provided with a sliding groove, and a pointer slider is slidably connected inside the sliding groove. The surface of the outer casing is coated with scale lines.

[0012] In a further embodiment, a protrusion is fitted on the side of the top block away from the first limiting block, and a pull ball is fixed to the end of the block outside the cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model has a cavity installed on the outer shell, and a first limiting block is installed inside the cavity. The first limiting block can be locked when the pressure plate is not in use. When in use, the first limiting block is restricted inside the cavity by the insertion of the top block, which prevents the locking end of the first limiting block from entering the inner shell and avoids jamming with the pressure spring, thus ensuring the normal use of the rebound spring. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a partial structural cross-sectional view of an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the cavity structure according to an embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of the top rod in an embodiment of the present utility model;

[0019] Figure 5 This is a partial structural connection diagram of an embodiment of the present utility model.

[0020] In the diagram: 1. Outer shell; 2. Pressure plate; 3. Top rod; 4. Counterattack hammer; 5. Guide rod; 6. Cavity; 7. First limiting block; 8. Elastic sheet; 9. Top block; 10. Shell cover; 11. Pressure spring; 12. Second limiting block; 13. Spring; 14. Buffer spring; 15. Sliding groove; 16. Pointer slider; 17. Scale line; 18. Protrusion; 19. Pull ball; 20. Support spring. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] A measuring tool for engineering supervision includes a housing 1, a pressure plate 2 disposed inside the housing 1, a push rod 3 slidably connected to the housing 1, and a counter-attack hammer 4. The tool is characterized in that a guide rod 5, slidably connected to the push rod 3, is fixedly connected to one side of the pressure plate 2. Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown in this application, the outer shell 1 is used for the installation of the entire internal structure of the rebound hammer, the pressure plate 2 is used to install the guide rod 5 and limit and fix the guide rod 5, and a second limiting block 12 is installed on the pressure plate 2. When the counterattack hammer 4 is compressed close to the pressure plate 2, its second limiting block 12 can engage with the engagement point of the counterattack hammer 4. The support spring 20 is installed between the pressure plate 2 and the second limiting block 12 to provide support force for the second limiting block 12 to engage the engagement point of the counterattack hammer 4. The guide rod 5 is installed on one side of the pressure plate 2 and is slidably connected to the counterattack hammer 4. The counterattack hammer 4 can reciprocate along the guide rod 5. The top rod 3 is slidably connected to the guide rod 5, and one end of the top rod 3 extends through to the outside of the outer shell 1 for contacting the building wall.

[0024] Furthermore, a spring 13 is fixedly connected between the counter-attack hammer 4 and the outer casing 1. The spring 13 is sleeved on the surface of the push rod 3. A buffer spring 14 is snapped into the inside of the push rod 3. The buffer spring 14 works in conjunction with the guide rod 5. A sliding groove 15 is provided on the surface of the outer casing 1. A pointer slider 16 is slidably connected inside the sliding groove 15. The surface of the outer casing 1 is coated with scale lines 17. A casing cover 10 is screwed to one end of the outer casing 1. A pressure spring 11 is snapped between the casing cover 10 and the pressure plate 2. Figure 1 , Figure 2 and Figure 4As shown, the impact spring 13 is installed inside the outer casing 1, and the other end of the impact spring 13 is fixed to the counterattack hammer 4. The impact spring 13 provides the impact force to the counterattack hammer 4. When the user contacts the top rod 3 with the wall, the rebound device is pressed, and the top rod 3 retracts into the rebound device, driving the counterattack hammer 4 to move towards one end of the rebound device. The counterattack hammer 4 squeezes the pressure plate 2. The pressure spring 11 is installed between the pressure plate 2 and the casing cover 10. The casing cover 10 is screwed onto one end of the outer casing 1. The casing cover 10 and the pressure plate 2 fix the pressure spring 11 inside the outer casing 1. The pressure plate 2 is subjected to... When the pressure spring 11 is compressed, and the other end of the second limiting block 12 on the pressure plate 2 contacts the cover 10, the second limiting block 12 is compressed and rotates around the hinge. As a result, the locking end of the second limiting block 12 disengages from the locking point of the counterattack hammer 4. Under the pull of the spring spring 13, the counterattack hammer 4 rebounds and impacts the top rod 3. During the repeated rebound of the counterattack hammer 4, it touches the pointer slider 16 inside the sliding groove 15, which drives the support slider to move so that it can record the corresponding value in conjunction with the scale line 17.

[0025] The surface of the outer shell 1 is connected to a cavity 6. Inside the cavity 6, a first limiting block 7 is hinged and engages with a pressure plate 2. An elastic sheet 8 is fixed between the first limiting block 7 and the cavity 6. A top block 9, which cooperates with the first limiting block 7, is inserted into one side of the cavity 6. Figure 1 and Figure 3 As shown, cavity 6 is installed on the surface of outer shell 1 and communicates with the inner cavity of outer shell 1. Cavity 6 is used to install and fix the first limiting block 7. Elastic sheet 8 is installed between the first limiting block 7 and cavity 6. Elastic sheet 8 provides elastic support for the first limiting block 7, so that the snap-fit ​​end of the first limiting block 7 enters the cavity 6 of outer shell 1 through the opening. When pressure spring 11 is compressed, pressure plate 2 can snap-fit ​​with the snap-fit ​​part of the first limiting block 7. Top block 9 is inserted into the insertion slot of cavity 6 to limit the first limiting block 7. When the rebound spring needs to be used, top block 9 is moved into the cavity 6 so that one end of top block 9 contacts the first limiting block 7 and pushes it up to prevent the snap-fit ​​part of the first limiting block 7 from entering the inner cavity of outer shell 1 and avoiding interference with pressure spring 11, which would cause pressure spring 11 to be stuck and affect the normal use of rebound spring.

[0026] Furthermore, a protrusion 18 is fitted on the side of the top block 9 away from the first limiting block 7, and a pull ball 19 is fixedly connected to the end of the block outside the cavity 6, such as... Figure 1 and Figure 3 As shown, the protrusion 18 is installed inside the cavity 6 and located on one end of the top block 9, used to limit the top block 9. When the top block 9 is pulled out of the cavity 6, it prevents the top block 9 from being pulled out of the cavity 6. The pull ball 19 is installed on the end of the top block 9 outside the cavity 6, making it convenient for the operator to pull the top block 9 to move it inside the cavity 6.

[0027] Brief description of the usage process: A first limiting block 7 is installed inside the cavity 6. When the rebound spring is in use, the top block 9 is inserted into the cavity 6. The top block 9 supports the first limiting block 7 and restricts the first limiting block 7 inside the cavity 6, preventing the locking end of the first limiting block 7 from entering the interior of the outer shell 1 and avoiding jamming with the pressure spring 11, thus ensuring the normal use of the rebound spring. When the rebound spring is not in use, the top block 9 is pulled out. At this time, the top block 9 no longer limits the first limiting block 7, and the locking end of the first limiting block 7 enters the inner cavity of the outer shell 1 to limit the pressure plate 2.

[0028] 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 measuring tool for engineering supervision, comprising a housing (1), a pressure plate (2) disposed inside the housing (1), a top rod (3) slidably connected to the housing (1), and a counter-attack hammer (4), characterized in that: One side of the pressure plate (2) is fixedly connected to a guide rod (5) that is slidably connected to the top rod (3); The surface of the outer shell (1) is connected to a cavity (6). The cavity (6) is hinged to a first limiting block (7) that engages with a pressure plate (2). An elastic sheet (8) is fixed between the first limiting block (7) and the cavity (6). A top block (9) that works with the first limiting block (7) is inserted into one side of the cavity (6).

2. The measuring tool for engineering supervision according to claim 1, characterized in that: One end of the outer shell (1) is screwed with a shell cover (10), and a pressure spring (11) is engaged between the shell cover (10) and the pressure plate (2).

3. The measuring tool for engineering supervision according to claim 1, characterized in that: The pressure plate (2) has a second limiting block (12) hinged in the groove. The second limiting block (12) is engaged with the counterattack hammer (4) at the locking position. A support spring (20) is assembled between the second limiting block (12) and the pressure plate (2).

4. A measuring tool for engineering supervision according to claim 1, characterized in that: A spring (13) is fixed between the counter-attack hammer (4) and the outer shell (1), and the spring (13) is sleeved on the surface of the top rod (3).

5. A measuring tool for engineering supervision according to claim 1, characterized in that: The top rod (3) is internally fitted with a buffer spring (14), which is used in conjunction with the guide rod (5).

6. A measuring tool for engineering supervision according to claim 1, characterized in that: The outer shell (1) has a sliding groove (15) on its surface, and a pointer slider (16) is slidably connected inside the sliding groove (15). The outer shell (1) is coated with scale lines (17).

7. A measuring tool for engineering supervision according to claim 1, characterized in that: The top block (9) is fitted with a protrusion (18) on the side away from the first limiting block (7), and a pull ball (19) is fixed to the end of the block outside the cavity (6).

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