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CN-224215081-U - Noise test auxiliary device and noise test equipment

CN224215081UCN 224215081 UCN224215081 UCN 224215081UCN-224215081-U

Abstract

The application relates to the technical field of noise testing, and discloses a noise testing auxiliary device and noise testing equipment. The noise test auxiliary device comprises a telescopic component and a supporting component, wherein the telescopic component comprises telescopic rods and locking pieces, the telescopic rods are nested inside and outside and coaxially arranged and can slide relatively, the telescopic rods are provided with locking structures, the locking pieces can be matched with the locking structures to lock two adjacent telescopic rods, the supporting component is connected with the telescopic rods at the outermost side in the telescopic component and is used for supporting the telescopic components so that the telescopic rods can be arranged vertically, and the telescopic rods at the innermost side are provided with fixing structures which can fix the noise test device at one ends deviating from the supporting component. The noise test auxiliary device provided by the application has a stable structure, and can not be tipped due to unstable gravity center when the ultra-high point position test is performed.

Inventors

  • LIU HAO
  • NIE JUN
  • SUI CHENG
  • JIANG XUJIA
  • HUANG HUI

Assignees

  • 中联重科股份有限公司

Dates

Publication Date
20260508
Application Date
20250626

Claims (10)

  1. 1. A noise testing aid (1), characterized in that the noise testing aid (1) comprises: The telescopic assembly (10), the telescopic assembly (10) comprises telescopic rods (11) and locking pieces (12), a plurality of telescopic rods (11) are nested inside and outside and coaxially arranged and can slide relatively along the axial direction, each telescopic rod (11) is provided with a locking structure (111), the locking pieces (12) can be matched with the locking structures (111) to lock two adjacent telescopic rods (11), and The support assembly (20) is connected with the outermost telescopic rod (11) in the telescopic assembly (10), and is used for supporting the telescopic assembly (10) so that the telescopic assembly (10) can be vertically arranged; Wherein the innermost telescopic rod (11) has a fixing structure (112) at one end facing away from the support assembly (20) for fixing a noise testing device.
  2. 2. Noise testing aid (1) according to claim 1, characterized in that, The length h1 of the expansion assembly (10) after expansion meets the condition that h1 is more than or equal to 11.36m and/or The length h2 of the telescopic component (10) after being retracted is smaller than or equal to 3m.
  3. 3. The noise testing aid (1) according to claim 1, characterized in that the locking structure (111) comprises a first mating hole (111 a) and a second mating hole (111 b); The first matching hole (111 a) is a through hole penetrating through the side wall of the telescopic rod (11) in the radial direction; The second matching hole (111 b) is a through hole penetrating through the side wall of the telescopic rod (11) in the radial direction, or is a blind hole arranged on the inner wall surface or the outer wall surface of the telescopic rod (11); The telescopic assembly (10) is arranged to enable a first telescopic rod (11 a) and a second telescopic rod (11 b) which are adjacently arranged to relatively slide to a first matching hole (111 a) of the first telescopic rod (11 a) so as to be communicated with a second matching hole (111 b) of the second telescopic rod (11 b); The locking member (12) is arranged to have a first portion thereof located in a first mating hole (111 a) of the first telescopic rod (11 a) and a second portion thereof located in a second mating hole (111 b) of the second telescopic rod (11 b) to fix the first telescopic rod (11 a) and the second telescopic rod (11 b).
  4. 4. A noise testing aid (1) according to claim 3, characterized in that, The first telescopic rod (11 a) is provided with two first matching holes (111 a) which are oppositely arranged along the radial direction of the telescopic rod (11), the second telescopic rod (11 b) is provided with at least one pair of second matching holes (111 b) on the inner wall surface of the second telescopic rod along the radial direction of the telescopic rod (11), and/or The locking piece (12) comprises a spring (121) and two marbles (122) fixed at two ends of the spring (121), wherein the marbles (122) are arranged in the first matching hole (111 a) to slide along with the first telescopic rod (11 a) relative to the second telescopic rod (11 b), and support against the inner wall of the second telescopic rod (11 b) or partially stretch into the second matching hole (111 b) under the elastic action of the spring (121) so as to lock the first telescopic rod (11 a) and the second telescopic rod (11 b).
  5. 5. The noise testing aid (1) according to any one of claims 1-4, characterized in that the fixing structure (112) comprises: A limit stop (112 a), the limit stop (112 a) being used to limit the horizontal position of the noise testing device; A fixed baffle (112 b), wherein the fixed baffle (112 b) is arranged opposite to the limit baffle (112 a) and defines an open installation space (1120) together with the limit baffle (112 a), and And the adjusting bolt (112 c) penetrates through the fixed baffle (112 b) from one side of the fixed baffle (112 b) away from the limit baffle (112 a) to extend into the installation space (1120), and is used for propping the noise testing device to enable the noise testing device to prop against the limit baffle (112 a).
  6. 6. Noise testing aid (1) according to claim 5, characterized in that, The side of the adjusting bolt (112 c) facing the limit baffle (112 a) is also connected with a buffer plate (112 d) for supporting the noise testing device, and/or The fixing structure (112) further comprises a supporting seat (112 e), and the fixing baffle (112 b) and the limiting baffle (112 a) are arranged on the supporting seat (112 e).
  7. 7. The noise testing auxiliary device (1) according to any one of claims 1-4, wherein the supporting assembly (20) comprises at least three supporting rods (21), the at least three supporting rods (21) are uniformly arranged along the circumferential direction of the outermost telescopic rod (11), one end of each supporting rod (21) is connected with the outermost telescopic rod (11), and the other end of each supporting rod is used for supporting a mounting platform to support the telescopic assembly (10), so that the telescopic assembly (10) is vertically arranged.
  8. 8. The noise test auxiliary device (1) according to claim 7, wherein the telescopic assembly (10) further comprises a first mounting plate (13), the first mounting plate (13) is fixed to the outer peripheral side of the outermost telescopic rod (11), one end of the supporting rod (21) is rotatably connected with the first mounting plate (13), and the rotation axis of the supporting rod (21) is perpendicular to the axial direction of the telescopic assembly (10).
  9. 9. The noise test auxiliary device (1) according to claim 8, wherein the telescopic assembly (10) further comprises a second mounting plate (14) fixed to an outer peripheral side of the outermost telescopic rod (11), the second mounting plate (14) being located below the first mounting plate (13); The support assembly (20) further comprises a reinforcing rod (22), one end of the reinforcing rod (22) is connected with the middle part of the support rod (21), and the other end of the reinforcing rod is connected with the second mounting plate (14) through rotation.
  10. 10. A noise testing apparatus, characterized in that the noise testing apparatus comprises: Noise testing aid (1) according to any one of claims 1-9, and And the noise testing device is arranged on the fixed structure (112).

Description

Noise test auxiliary device and noise test equipment Technical Field The application belongs to the technical field of noise testing, and particularly relates to a noise testing auxiliary device and noise testing equipment. Background At present, the noise of the mobile crane operation is mainly measured by using a hexahedral acoustic power measurement method, wherein 6 measurement points are required to be arranged around the crane by the hexahedral acoustic power measurement method, and the measurement points comprise 4 measurement points at a position 1.5m away from the ground and 2 measurement points at a position 11.36m away from the ground. In the prior art, a rod-shaped auxiliary tool is generally used for fixing the noise testing device to the noise measurement point. In order to enable the noise testing device to reach a measurement point of 11.36m, the head and tail of a plurality of mounting rods are usually tied together by a fixing ring. The auxiliary tool is easy to be tilted due to unstable gravity center during testing. Disclosure of utility model The application aims to provide a noise test auxiliary device and noise test equipment, which solve the problem that the existing noise test auxiliary tool is easy to tip over caused by unstable gravity center when performing ultra-high point location test. In order to achieve the above object, an aspect of the present application provides a noise test assisting apparatus including: The telescopic assembly comprises a telescopic rod and a locking piece, wherein a plurality of telescopic rods are nested inside and outside and coaxially arranged and can slide relatively along the axial direction, the telescopic rod is provided with a locking structure, the locking piece can be matched with the locking structure to lock two adjacent telescopic rods, and The support assembly is connected with the outermost telescopic rod in the telescopic assembly and is used for supporting the telescopic assembly so that the telescopic assembly can be vertically arranged; the innermost telescopic rod is provided with a fixing structure capable of fixing the noise testing device at one end away from the supporting component. In some embodiments, the length h1 of the expansion assembly after expansion meets the condition that h1 is more than or equal to 11.36m; In some embodiments, the length h2 of the telescopic assembly after being retracted satisfies that h2 is less than or equal to 3m. In some embodiments, the locking structure includes a first mating hole and a second mating hole; the first matching hole is a through hole penetrating through the side wall of the telescopic rod in the radial direction; the second matching hole is a through hole penetrating through the side wall of the telescopic rod in the radial direction, or is a blind hole arranged on the inner wall surface or the outer wall surface of the telescopic rod; The telescopic assembly is arranged to enable a first telescopic rod and a second telescopic rod which are adjacently arranged to relatively slide to a second matching hole of the second telescopic rod, wherein the first matching hole of the first telescopic rod is communicated with the second matching hole of the second telescopic rod; The locking member is configured to have a first portion thereof located in a first mating hole of the first telescoping rod and a second portion thereof located in a second mating hole of the second telescoping rod to secure the first telescoping rod and the second telescoping rod. In some embodiments, the first telescopic rod has two first fitting holes oppositely arranged along the radial direction of the telescopic rod, and the second telescopic rod is provided with at least one pair of second fitting holes oppositely arranged along the radial direction of the telescopic rod on the inner wall surface of the second telescopic rod; In some embodiments, the locking piece comprises a spring and two marbles fixed at two ends of the spring, wherein the marbles slide along the first telescopic rod relative to the second telescopic rod in the first matching hole, and support against the inner wall or part of the second telescopic rod to extend into the second matching hole under the elastic action of the spring so as to lock the first telescopic rod and the second telescopic rod. In some embodiments, the fixation structure comprises: the limiting baffle is used for limiting the horizontal position of the noise testing device; a fixed baffle plate which is arranged opposite to the limit baffle plate and defines an open installation space together with the limit baffle plate, and The adjusting bolt penetrates through the fixing baffle plate from one side, deviating from the limiting baffle plate, of the fixing baffle plate to extend into the installation space, and the adjusting bolt is used for propping the noise testing device to enable the noise testing device to prop against the limiting baffle plate. In some embod