Extension rod for noise detection

Abstract

The utility model discloses an extension rod for noise detection, which comprises a main rod and an extension rod, the main rod is internally provided with a fixing mechanism and a first fixing groove, the extension rod is internally provided with an extension rod and a through groove, the fixing mechanism comprises a rotating shaft, the rotating shaft penetrates through a fixing gripper, and the fixing gripper is fixedly connected with the main rod. Extrusion plates are symmetrically arranged on one side of the fixed gripper, extrusion springs are arranged on one sides of the extrusion plates, a fixed block is arranged on one side of the extension rod, and the output end of the fixed gripper is movably connected with the fixed block; by arranging an extrusion spring, the fixed gripper has gripping force with certain strength, when the fixed gripper is fixed to the fixed block, the fixed gripper can tightly grip the fixed block, the main rod and the extension rod are firmly fixed, when the fixed block is separated from the fixed gripper, the shaking amplitude of the fixed gripper can be reduced, friction between the fixed gripper and the rotating shaft is guaranteed, and the service life of the rotating shaft is prolonged. And the fixed gripper is more powerful.

Description

Technical Field

[0001] The utility model relates to the technical field of noise detection, in particular to an extension rod for noise detection. Background Art

[0002] Noise tester is an instrument used for noise detection and testing in public places such as work sites and squares. Noise pollution is one of the most influential environmental pollutions. High decibel noise can even cause serious damage to the human eardrum, resulting in deafness, etc. The application of noise tester can provide the decibel reached by the noise so that relevant measures can be taken to control and reduce the noise. The unit of measurement for sound volume is decibel. Professional noise tester has a highly sensitive sensor, high precision, and a wide range of applications. It can be widely used for noise measurement in various environments. The noise tester needs to be assisted by an extension rod when in use; most of the existing extension rods are single-section extensions, and the extension rods are inconvenient to store.

[0003] To this end, the utility model provides an extension rod for noise detection. Utility Model Content

[0004] The utility model aims to provide an extension rod for noise detection to solve the above-mentioned problems.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an extension rod for noise detection described in an embodiment of the utility model comprises a main rod and an extension rod, the main rod is provided with a fixing mechanism and a No. 1 fixing groove inside, the extension rod is provided with an extension rod and a through groove inside, the fixing mechanism comprises a rotating shaft, the rotating shaft passes through a fixed gripper, one side of the fixed gripper is symmetrically provided with an extrusion plate, one side of the extrusion plate is provided with an extrusion spring, one side of the extension rod is provided with a fixed block, the output end of the fixed gripper is movably connected to the fixed block; a noise monitoring device is provided at the end of the extension rod away from the extension rod.

[0006] As a further solution of the utility model: the rotating shaft is rotatably connected to the fixed gripper, one end of the extrusion spring is fixedly connected to the No. 1 fixed groove, and both ends of the rotating shaft are fixedly connected to the No. 1 fixed groove.

[0007] As a further solution of the utility model: a handle is arranged above the main rod.

[0008] As a further solution of the utility model: a rotating shaft is rotatably provided at one end of the extension rod away from the noise monitoring device, and both ends of the rotating shaft are fixedly connected to the main rod.

[0009] As a further solution of the utility model: a No. 2 fixing groove is provided at one end of the main rod close to the rotating axis, a No. 2 fixing groove is provided at one end of the extension rod close to the rotating axis, and a No. 1 fixing pin is slidably provided inside the No. 2 fixing groove.

[0010] As a further solution of the utility model: a compression spring is arranged at one end of the extension rod away from the noise monitoring device, and one end of the compression spring is fixedly connected to the through slot.

[0011] As a further solution of the utility model: a No. 3 fixing groove is arranged on one side of the extension rod, a No. 3 fixing groove is arranged on one end of the extension rod close to the compression spring, and a No. 2 fixing pin is slidably arranged inside the No. 3 fixing groove.

[0012] Beneficial effects of the utility model:

[0013] (1) The utility model discloses an extension rod for noise detection, which is provided with a squeeze spring so that the fixed gripper has a certain gripping force. When fixed with the fixed block, the fixed gripper can tightly grasp the fixed block, so that the main rod and the extension rod are firmly fixed. When the fixed block is pulled out of the fixed gripper, the shaking amplitude of the fixed gripper can be reduced, thereby ensuring the friction between the fixed gripper and the rotating shaft, and making the fixed gripper more powerful.

[0014] (2) The extension rod for noise detection described in the utility model is provided with a compression spring, so that after the second fixing pin is pulled out of the extension rod, the compression spring is released from the compression state and instantly ejected outward to drive most of the extension rod to eject out of the extension rod, so as to be extended again, which is more convenient for people to detect the noise quality in higher places.

[0015] (3) The extension rod for noise detection described in the utility model is completely fitted with the No. 1 fixing pin and the No. 2 fixing groove, and the No. 2 fixing pin and the No. 3 fixing groove, so that the extension rod in the extended state is fixedly connected to the main rod, and the extension rod in the extended state is fixedly connected to the extension rod, which can ensure the stability of the overall shape of the device when in use and ensure that people can detect noise smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an extension rod for noise detection in the utility model;

[0018] Figure 2 It is a side sectional view of an extension rod for noise detection of the utility model;

[0019] Figure 3It is a cross-sectional view of a fixing mechanism of an extension rod for noise detection of the utility model;

[0020] Figure 4 The utility model is an extension rod for noise detection Figure 3 Enlarged view of point A in the middle.

[0021] In the figure: 1. fixing mechanism; 101. fixing gripper; 102. rotating shaft; 103. extrusion plate; 104. extrusion spring; 105. fixing block; 2. No. 1 fixing slot; 3. main rod; 4. handle; 5. extension rod; 6. noise monitoring device; 7. No. 1 fixing pin; 8. No. 2 fixing slot; 9. compression spring; 10. extension rod; 11. No. 3 fixing slot; 12. No. 2 fixing pin; 13. through slot; 14. rotating shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1 - Figure 4 As shown, the utility model is an extension rod for noise detection, which includes a main rod 3 and an extension rod 5. The main rod 3 is provided with a fixing mechanism 1 and a No. 1 fixing groove 2, and the extension rod 5 is provided with an extension rod 10 and a through groove 13.

[0025] A limit block is provided inside the through slot 13 to prevent the extension rod 10 from flying out of the extension rod 5 when the extension rod 10 moves;

[0026] The fixing mechanism 1 includes a rotating shaft 102, the rotating shaft 102 passes through the fixed gripper 101, the rotating shaft 102 is rotatably connected to the fixed gripper 101, both ends of the rotating shaft 102 are fixedly connected to the first fixing groove 2, and the fixed gripper 101 rotates on the rotating shaft 102 to grab and separate the fixed block 105;

[0027] A squeezing plate 103 is symmetrically arranged on one side of the fixed gripper 101, and a squeezing spring 104 is arranged on one side of the squeezing plate 103. One end of the squeezing spring 104 is fixedly connected to the No. 1 fixing groove 2. When the fixing block 105 is about to leave the fixed gripper 101, the fixed gripper 101 rotates outward, and the squeezing spring 104 provides an inward force to it, so that the fixed gripper 101 can tightly wrap the fixing block 105.

[0028] A fixing block 105 is provided on one side of the extension rod 5, and the output end of the fixed gripper 101 is movably connected to the fixing block 105. The fixing and separation of the fixed gripper 101 and the fixing block 105 drive the main rod 3 and the extension rod 5 to be fixed and separated, which can reduce space occupation and facilitate use;

[0029] A handle 4 is provided on the upper surface of the main rod 3;

[0030] By setting the extrusion spring 104, the fixed gripper 101 has a certain gripping force. When fixed with the fixed block 105, the fixed gripper 101 can tightly grasp the fixed block 105, so that the main rod 3 and the extension rod 5 are firmly fixed. When the fixed block 105 is pulled out of the fixed gripper 101, the shaking amplitude of the fixed gripper 101 can be reduced, thereby ensuring the friction between the fixed gripper 101 and the rotating shaft 102, making the fixed gripper 101 more powerful.

[0031] Example 2

[0032] See also Figure 1 - Figure 4 As shown, on the basis of embodiment 1, a noise monitoring device 6 is provided at one end of the extension rod 10 away from the extension rod 5;

[0033] A No. 2 fixing groove 8 is provided at one end of the main rod 3 close to the rotating shaft 14, and a No. 2 fixing groove 8 is provided at one end of the extension rod 5 close to the rotating shaft 14. The No. 2 fixing groove 8 on the main rod 3 and the extension rod 5 is the same No. 2 fixing groove 8, and a No. 1 fixing pin 7 is slidably provided inside the No. 2 fixing groove 8. After the extension rod 5 rotates 180 degrees, the No. 1 fixing pin 7 passes through the No. 2 fixing groove 8 on the main rod 3 and the extension rod 5 to fix the two together, so that the extension rod 5 can be stable when in use;

[0034] The end of the extension rod 5 away from the noise monitoring device 6 is rotatably provided with a rotating shaft 14, and both ends of the rotating shaft 14 are fixedly connected to the main rod 3. The rotating shaft 14 connects the extension rod 5 and the main rod 3, so that the extension rod 5 can be rotated 180 degrees and then be in the same direction as the main rod 3, indirectly extending the main rod 3, which is convenient for noise detection. A No. 3 fixing groove 11 is provided on one side of the extension rod 5, and a No. 3 fixing groove 11 is provided on one end of the extension rod 10 close to the compression spring 9. The No. 3 fixing groove 11 on the extension rod 5 and the extension rod 10 is the same No. 3 fixing groove 11, and a No. 2 fixing pin 12 is slidably provided inside the No. 3 fixing groove 11, and the No. 2 fixing pin 12 fixes the extension rod 5 and the extension rod 10 together through the No. 3 fixing groove 11, so that the compression spring 9 is in a compressed state;

[0035] By arranging the compression spring 9, after the second fixing pin 12 is pulled out from the extension rod 10, the compression spring 9 is released from the compression state, and is instantly ejected outward to drive most of the extension rod 10 to be ejected from the extension rod 5, so as to be extended again, which makes it more convenient for people to detect the noise quality at a higher place.

[0036] By fully fitting the No. 1 fixing pin 7 with the No. 2 fixing groove 8, and fully fitting the No. 2 fixing pin 12 with the No. 3 fixing groove 11, the extended rod 5 in the extended state is fixedly connected to the main rod 3, and the extended extension rod 5 in the extended state is fixedly connected to the extension rod 10, which can ensure the stability of the overall shape of the device when in use and ensure that people can detect noise smoothly.

[0037] The working principle of the utility model is as follows: the fixing block 105 is separated from the fixing gripper 101, thereby separating one end of the extension rod 5 from the main rod 3, and the extension rod 5 is rotated 180 degrees through the rotating shaft 14, and the No. 1 fixing pin 7 is completely inserted into the No. 2 fixing groove 8, so that the extension rod 5 and the main rod 3 are fixed, and the No. 2 fixing pin 12 is pulled outward to make it leave the No. 3 fixing groove 11 on the extension rod 10. At the moment when the No. 2 fixing pin 12 leaves, the compression spring 9 is instantly released from the compressed state, and instantly ejected outward to drive most of the extension rod 10 to eject from the extension rod 5, and the extension is achieved again. When the device is used to detect noise, the extension rod 5 and the extension rod 10 are stored in the reverse order of the above steps after use.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An extension rod for noise detection, comprising a main rod (3) and an extension rod (5), characterized in that: The main rod (3) is provided with a fixing mechanism (1) and a first fixing groove (2) inside, and the extension rod (5) is provided with an extension rod (10) and a through groove (13) inside. The fixing mechanism (1) comprises a rotating shaft (102), the rotating shaft (102) passes through the fixed gripper (101), a squeezing plate (103) is symmetrically arranged on one side of the fixed gripper (101), a squeezing spring (104) is arranged on one side of the squeezing plate (103), a fixing block (105) is arranged on one side of the extension rod (5), and an output end of the fixed gripper (101) is movably connected to the fixing block (105); A noise monitoring device (6) is provided at one end of the extension rod (10) away from the extension rod (5).

2. The extension rod for noise detection according to claim 1, characterized in that: The rotating shaft (102) is rotatably connected to the fixed gripper (101), one end of the extrusion spring (104) is fixedly connected to the No. 1 fixed groove (2), and both ends of the rotating shaft (102) are fixedly connected to the No. 1 fixed groove (2).

3. The extension rod for noise detection according to claim 1, characterized in that: A handle (4) is provided above the main rod (3).

4. The extension rod for noise detection according to claim 1, characterized in that: A rotating shaft (14) is rotatably provided at one end of the extension rod (5) away from the noise monitoring device (6), and both ends of the rotating shaft (14) are fixedly connected to the main rod (3).

5. The extension rod for noise detection according to claim 1, characterized in that: A No. 2 fixing groove (8) is provided at one end of the main rod (3) close to the rotating shaft (14), a No. 2 fixing groove (8) is provided at one end of the extension rod (5) close to the rotating shaft (14), and a No. 1 fixing pin (7) is slidably provided inside the No. 2 fixing groove (8).

6. The extension rod for noise detection according to claim 1, characterized in that: A compression spring (9) is provided at one end of the extension rod (10) away from the noise monitoring device (6), and one end of the compression spring (9) is fixedly connected to the through slot (13).

7. The extension rod for noise detection according to claim 1, characterized in that: A No. 3 fixing groove (11) is arranged on one side of the extension rod (5), a No. 3 fixing groove (11) is arranged on one end of the extension rod (10) close to the compression spring (9), and a No. 2 fixing pin (12) is slidably arranged inside the No. 3 fixing groove (11).

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