CN113923576A - Multifunctional sound box performance testing device - Google Patents
Multifunctional sound box performance testing device Download PDFInfo
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- CN113923576A CN113923576A CN202111056482.9A CN202111056482A CN113923576A CN 113923576 A CN113923576 A CN 113923576A CN 202111056482 A CN202111056482 A CN 202111056482A CN 113923576 A CN113923576 A CN 113923576A
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- sound box
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a multifunctional sound box performance testing device, which comprises a casing and a fixed top plate, wherein a screw rod motor is arranged in the fixed top plate, the screw rod motor is in power connection with a screw rod, the screw rod is in threaded connection with a nut block, the screw rod can drive the nut block to move by rotating, the screw thread on the screw rod is a bidirectional screw thread, a hydraulic machine is arranged in the nut block, the hydraulic machine is connected with a hydraulic rod fixedly connected with the casing, a volume adjusting mechanism, a detection mechanism and a limiting mechanism are arranged in the casing, the sound box can vibrate according to the volume of the sound box through a vibrating membrane arranged in the detection mechanism, so that the volume of the sound box is converted into the vibration amplitude of the vibrating membrane, a sound insulation block arranged in the volume adjusting mechanism can ensure that the sound of the sound box cannot leak out during detection, the detection precision is ensured, the noise pollution caused by the sound leakage is also avoided, and the limiting mechanism can input a sound source for the sound box through a sound source input rod, and supplying power to the sound box through the power rod.
Description
Technical Field
The invention relates to the field of testing, in particular to a multifunctional sound box performance testing device.
Background
The multifunctional sound box needs to detect the functions when leaving the factory, but because the volume value of the sound box can be influenced by the environment and the input and output values, all the sound boxes are difficult to have a standardized detection, if the sound box is detected by using a sealed scene, the requirements of a production and processing assembly line are also difficult to meet, and the volume detection result of the sound box has different ranges, the current detection mode can only detect whether the sound box reaches, a certain standard is adopted, and the sound box is not humanized.
Disclosure of Invention
The invention aims to provide a multifunctional sound box performance testing device which is used for overcoming the defects in the prior art.
The multifunctional sound box performance testing device comprises a casing and a fixed top plate, wherein the fixed top plate can be fixedly arranged above a sound box conveying belt, a lead screw motor is arranged in the fixed top plate, a lead screw is in power connection with the lead screw, the lead screw is in threaded connection with a nut block, the lead screw can drive the nut block to move by rotating, the upper thread of the lead screw is a bidirectional thread, a hydraulic machine is arranged in the nut block and is connected with a hydraulic rod fixedly connected with the casing, the hydraulic machine can drive the hydraulic rod to lift, a detection cavity is arranged in the casing, a placing cavity is arranged in the rear end wall of the detection cavity and is communicated with the detection cavity, a sliding cavity is arranged in the rear end wall of the placing cavity, an oil tank is arranged in the upper end wall of the sliding cavity, and a moving cavity is arranged in the lower end wall of the sliding cavity, four symmetrical sound insulation cavities are arranged in the front end wall, the rear end wall, the left end wall and the right end wall of the detection cavity, a control cavity is arranged in the front end wall of the detection cavity, a storage cavity is arranged in the upper end wall of the control cavity, a volume adjusting mechanism and a detection mechanism are arranged in the casing, the volume adjusting mechanism can be started to adjust the volume of the sound box, the detection mechanism can be used for detecting the maximum volume of the sound box and marking the maximum volume of the sound box, a moving plate is connected in the moving cavity in a sliding mode, the front end of the moving plate is fixedly connected with a connecting rod, the front end of the connecting rod is fixedly connected with a limiting mechanism, the limiting mechanism can be used for starting the sound box and inputting signals into the sound box, and the left end face of the casing is fixedly connected with an induction block;
the detection mechanism comprises a hydraulic pump arranged in the oil tank, the hydraulic pump is communicated with a middle cavity arranged in the shell, a vibrating membrane is arranged at the communication position of the control cavity and the detection cavity, the vibrating membrane can stretch along with the size of sound, a starting block is fixedly connected with the vibrating membrane, the upper end wall of the control cavity is provided with six switches distributed at equal intervals, the switches can be contacted by the starting block, a translation cavity is arranged in the front end wall of the storage cavity, a translation plate is slidably connected in the translation cavity, the other end of the translation plate is positioned in the storage cavity, an adjusting motor is fixedly connected in the storage cavity, the adjusting motor is in power connection with a turntable, six marking blocks distributed uniformly are arranged on the turntable, different switches can start the adjusting motor to output different powers, and therefore the turntable is driven to be different from the rotating angle of the marking blocks, thereby make different the mark piece just to detect the chamber to drive through the translation board mark the audio amplifier is carried out to the mark piece, the hydraulic pump can with translation chamber UNICOM.
Further, the volume adjusting mechanism comprises a sliding plate which is slidably connected in the sliding cavity, a twisting motor is arranged in the sliding plate, the twisting motor is in power connection with a twisting shaft of which the other end is positioned in the placing cavity, the twisting shaft is fixedly connected with a moving block, two fixed cavities which are symmetrical up and down are arranged in the moving block, a twisting cavity is arranged in the moving block, a connecting block of which the other end is positioned in the twisting cavity is slidably connected in the fixed cavity, the connecting block is fixedly connected with a fixed plate, the middle cavity is communicated with the sliding cavity, the middle cavity can be communicated with the sliding cavity and the moving cavity through a pressure valve, the sliding cavity can be respectively communicated with the two fixed cavities through the two pressure valves, a sound insulating plate is slidably connected in the sound insulating cavity, and the sound insulating plate is fixedly connected with a middle rod of which the other end is positioned in the detecting cavity, the middle rod is fixedly connected with a sound insulation block, and the sound insulation block is made of soft sound insulation materials.
Further, the limiting mechanism comprises a starting plate fixedly connected with the connecting rod, a first control cavity is arranged in the starting plate, a first control plate is connected in the first control cavity in a sliding manner, a connecting spring is connected between the first control plate and the first control cavity, the first control plate is fixedly connected with two sound source input rods, the sound source input rods can input sound sources for sound boxes, a second control cavity is arranged in the starting plate, a second control plate is connected in the second control cavity in a sliding manner, the connecting spring is connected between the second control plate and the second control cavity, the second control plate is fixedly connected with a power rod, the power rod can supply power to the sound boxes, a hydraulic cavity is arranged in the starting plate, a hydraulic plate is connected in the hydraulic cavity in a sliding manner, and two connecting ropes are fixedly connected between the hydraulic plate and the first control plate, the hydraulic pressure board with two haulage ropes of second control panel fixedly connected with, it establishes the relevant chamber that closes in the board to start, it has the closing plate to close intracavity sliding connection, the closing plate fixedly connected with other end is located detect the closing rod of intracavity, it is equipped with the start-up chamber in the board to start, start intracavity sliding connection has the start-up board, it is located to start board fixedly connected with other end the start-up rod that detects the intracavity, start the board with start-up chamber is connected and is equipped with reset spring, start the chamber with close the chamber with hydraulic pressure chamber UNICOM just is equipped with hydraulic oil.
Compared with the prior art, the invention has the following beneficial effects: the sound source detection device is provided with the detection mechanism, the sound box can vibrate according to the volume of the sound box through the vibrating membrane arranged in the detection mechanism, so that the volume of the sound box is converted into the vibration amplitude of the vibrating membrane, and the detection is convenient.
Drawings
FIG. 1 is a schematic diagram of a multifunctional sound box performance testing apparatus according to the present invention;
FIG. 2 is a schematic view of the internal structure of the housing of FIG. 1 according to the present invention;
FIG. 3 is a schematic top cross-sectional view of the starter plate of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic front view of the multi-function speaker;
fig. 5 is a schematic view of the back of the multi-function speaker.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:
referring to fig. 1-5, a multifunctional sound box performance testing device according to an embodiment of the present invention includes a housing 10 and a fixed top plate 13, where the fixed top plate 13 can be fixedly installed above a sound box conveyor belt, a lead screw motor 17 is installed in the fixed top plate 13, the lead screw motor 17 is dynamically connected to a lead screw 14, the lead screw 14 is in threaded connection with a nut block 15, the lead screw 14 can rotate to drive the nut block 15 to move, the thread on the lead screw 14 is a bidirectional thread, a hydraulic machine 12 is installed in the nut block 15, the hydraulic machine 12 is connected to a hydraulic rod 11 fixedly connected to the housing 10, the hydraulic machine 12 can drive the hydraulic rod 11 to lift, a detection cavity 18 is installed in the housing 10, a placement cavity 36 is installed in a rear end wall of the detection cavity 18, and the placement cavity 36 is communicated with the detection cavity 18, the loudspeaker box is characterized in that a sliding cavity 24 is arranged in the rear end wall of the placement cavity 36, an oil tank 28 is arranged in the upper end wall of the sliding cavity 24, a moving cavity 22 is arranged in the lower end wall of the sliding cavity 24, four symmetrical sound insulation cavities 20 are arranged in the front end wall, the rear end wall, the left end wall, the right end wall and the front end wall of the detection cavity 18, a control cavity 48 is arranged in the front end wall of the detection cavity 18, a storage cavity 33 is arranged in the upper end wall of the control cavity 48, a volume adjusting mechanism 75 and a detection mechanism 76 are arranged in the casing 10, the volume adjusting mechanism 75 can start and adjust the volume of the loudspeaker box, the detection mechanism 76 can detect the maximum volume of the loudspeaker box and mark the maximum volume of the loudspeaker box, a moving plate 21 is slidably connected in the moving cavity 22, a connecting rod 43 is fixedly connected to the front end of the moving plate 21, a limiting mechanism 77 is fixedly connected to the front end of the connecting rod 43, and the limiting mechanism 77 can start the loudspeaker box and input signals into the loudspeaker box, the left end face of the shell 10 is fixedly connected with an induction block 19, and when a screw rod motor 17 is started, a screw rod 14 can be driven to rotate, so that a nut block 15 is driven to move rightwards, and a hydraulic machine 12, a hydraulic rod 11 and the shell 10 are driven to move rightwards;
the detection mechanism 76 comprises a hydraulic pump 27 arranged in the oil tank 28, the hydraulic pump 27 is communicated with an intermediate cavity 30 arranged in the casing 10, a control cavity 48 is communicated with a detection cavity 18 and is provided with a vibrating membrane 50, the vibrating membrane 50 can stretch along with the size of sound, a vibrating membrane 50 fixedly connected with starting block 44 is arranged on the upper end wall of the control cavity 48, six switches 47 distributed at equal intervals are arranged on the upper end wall of the control cavity 48, the switches 47 can be contacted by the starting block 44, a translation cavity 34 is arranged in the front end wall of the storage cavity 33, the other end of the translation cavity 34 is slidably connected with a translation plate 46 in the storage cavity 33, the translation plate 46 is fixedly connected with an adjusting motor 35 arranged in the storage cavity 33, the adjusting motor 35 is connected with a turntable 31 in a power mode, six marking blocks 32 distributed uniformly are arranged on the turntable 31, and the switches 47 can be started to output different powers by the adjusting motor 35, thereby driving the rotating disc 31 and the marking block 32 to rotate at different angles, so that the different marking blocks 32 are opposite to the detection cavity 18, thereby driving the marking blocks 32 to mark the sound box through the translation plate 46, and the hydraulic pump 27 can be communicated with the translation cavity 34.
Illustratively, the volume adjusting mechanism 75 includes a sliding plate 23 slidably connected in the sliding cavity 24, a twisting motor 25 is disposed in the sliding plate 23, the twisting motor 25 is dynamically connected to a twisting shaft 42 having another end located in the placing cavity 36, the twisting shaft 42 is fixedly connected to a moving block 41, two fixed cavities 37 are disposed in the moving block 41, a twisting cavity 39 is disposed in the moving block 41, a connecting block 40 having another end located in the twisting cavity 39 is slidably connected in the fixed cavity 37, the connecting block 40 is fixedly connected to a fixed plate 38, the intermediate cavity 30 is communicated with the sliding cavity 24, the intermediate cavity 30 can be communicated with the sliding cavity 24 and the moving cavity 22 through a pressure valve 29, the sliding cavity 24 can be communicated with the two fixed cavities 37 through the two pressure valves 29, there is acoustic celotex board 53 in sound insulation chamber 20 sliding connection, acoustic celotex board 53 fixedly connected with other end is located detect intermediate lever 52 in the chamber 18, intermediate lever 52 fixedly connected with puigging block 45, puigging block 45 constitutes for soft sound-proof material.
Illustratively, the limiting mechanism 77 comprises an actuating plate 51 fixedly connected with the connecting rod 43, a first control chamber 68 is arranged in the actuating plate 51, a first control plate 60 is slidably connected in the first control chamber 68, a connecting spring 67 is connected between the first control plate 60 and the first control chamber 68, two sound source input rods 61 are fixedly connected with the first control plate 60, the sound source input rods 61 can input sound sources for a sound box, a second control chamber 66 is arranged in the actuating plate 51, a second control plate 63 is slidably connected in the second control chamber 66, the connecting spring 67 is connected between the second control plate 63 and the second control chamber 66, a power rod 64 is fixedly connected with the second control plate 63, the power rod 64 can supply power for the sound box, a hydraulic chamber 59 is arranged in the actuating plate 51, a hydraulic plate 69 is slidably connected in the hydraulic chamber 59, the hydraulic plate 69 and the first control plate 60 are fixedly connected with two connecting ropes 62, the hydraulic plate 69 and the second control plate 63 are fixedly connected with two hauling ropes 65, a relevant closing cavity 70 is arranged in the starting plate 51, a closing plate 57 is slidably connected in the closing cavity 70, the closing plate 57 is fixedly connected with a closing rod 58 with the other end positioned in the detection cavity 18, a starting cavity 55 is arranged in the starting plate 51, a starting plate 54 is slidably connected in the starting cavity 55, a starting rod 56 with the other end positioned in the detection cavity 18 is fixedly connected with the starting plate 54, a return spring 71 is connected between the starting plate 54 and the starting cavity 55, the starting cavity 55 is communicated with the closing cavity 70 and the hydraulic cavity 59 and is provided with hydraulic oil, when the first control plate 60 and the second control plate 63 move backwards, the connecting ropes 62 and the hauling ropes 65 can be pulled and the connecting spring 67 can be compressed, the connecting rope 62 and the pulling rope 65 move the hydraulic plate 69 leftward.
The invention relates to a multifunctional sound box performance testing device, which comprises the following working procedures:
in the initial state, the distance of the starting rod 56 entering the detection cavity 18 is shorter than the distance of the closing rod 58 entering the detection cavity 18, the hydraulic plate 69 is positioned at the rightmost position, the marking block 32 corresponding to the switch 47 at the most front is opposite to the detection cavity 18, the connecting spring 67 and the return spring 71 are in the relaxed state, the nut block 15 is farthest from the lead screw motor 17, and the machine shell 10 is positioned at the top.
When the sound box needs to be tested, the fixed top plate 13 is fixedly arranged right above the sound box conveyor belt, after the induction block 19 detects the sound box, the hydraulic press 12 is started to drive the hydraulic rod 11 to move downwards, so that the sound box enters the detection cavity 18, and meanwhile, the screw rod motor 17 is started to drive the shell 10 to move rightwards, so that the shell 10 is driven to move rightwards synchronously with the sound box;
at the same time of movement, the hydraulic pump 27 is started to discharge hydraulic oil into the middle chamber 30, because of the existence of the pressure valve 29 in the middle chamber 30, the hydraulic oil firstly enters into the sound insulation chamber 20, pushes the sound insulation board 53, the middle rod 52 and the sound insulation block 45 to move towards the sound box, so that the sound box is sealed by the sound insulation block 45, at this time, the pressure of the hydraulic oil becomes high, the pressure valve 29 in the middle chamber 30 is communicated, at this time, the hydraulic oil enters into the moving chamber 22, thereby pushing the moving plate 21, the connecting rod 43 and the starting plate 51 to move towards the sound box, so that the sound source input rod 61 and the power rod 64 are correspondingly connected with the sound box, at the same time, the first control plate 60 and the second control plate 63 move backwards, thereby driving the hydraulic plate 69 to move leftwards, thereby sucking away the hydraulic oil in the starting chamber 55, thereby driving the starting plate 54 and the starting rod 56 to move towards the sound box switch, and moving the closing plate 57 and the closing rod 58 away from the sound box switch, thereby starting the sound box;
after the sound box is driven to start, hydraulic oil enters the sliding cavity 24 to push the sliding plate 23, the torsion shaft 42 and the moving block 41 to move towards the sound box volume adjusting button, so that the volume adjusting button enters the torsion cavity 39, the pressure of the hydraulic oil in the sliding cavity 24 is increased, the sliding cavity 24 is communicated with the fixed cavity 37, the hydraulic oil enters the fixed cavity 37 to push the connecting block 40 and the fixed plate 38 to abut against the volume adjusting button, the torsion motor 25 is started at the moment, so that the torsion shaft 42 and the moving block 41 are driven to rotate, and the volume of the sound box is adjusted;
after receiving the sound, the vibrating diaphragm 50 vibrates, thereby pushing the starting block 44 to contact the switch 47, thereby starting the adjusting motor 35, thereby driving the turntable 31 to rotate, thereby making the marking block 32 corresponding to the volume just face the detection cavity 18, if the sound box volume is too small or too large, the marking block 32 just faces the detection cavity 18, then starting the hydraulic pump 27 to discharge hydraulic oil into the translation cavity 34, thereby pushing the translation plate 46 to move towards the sound box, thereby pushing the marking block 32 to move towards the sound box, so that the marking block 32 just facing the detection cavity 18 leaves a mark on the sound box, completing the detection, then the device resets, at this moment, the nut block 15 moves to the rightmost side, the screw rod 14 continues to rotate to drive the nut block 15 to return to the initial position, at this moment, the next sound box just moves to the position under the nut block 15.
It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.
Claims (6)
1. The utility model provides a multi-functional audio amplifier capability test device, includes casing (10) and fixed roof (13), its characterized in that: the detection device is characterized in that the fixed top plate (13) can be fixedly arranged above a sound box conveyor belt, a screw rod motor (17) is arranged in the fixed top plate (13), a screw rod (14) is in power connection with the screw rod motor (17), a screw block (15) is in threaded connection with the screw rod (14), a hydraulic machine (12) is arranged in the screw block (15), a hydraulic rod (11) fixedly connected with the casing (10) is connected with the hydraulic machine (12), a detection cavity (18) is arranged in the casing (10), a placement cavity (36) is arranged in the rear end wall of the detection cavity (18), a sliding cavity (24) is arranged in the rear end wall of the placement cavity (36), an oil tank (28) is arranged in the upper end wall of the sliding cavity (24), a moving cavity (22) is arranged in the lower end wall of the sliding cavity (24), and four symmetrical sound insulation cavities (20) are arranged in the front, rear, left and right end walls of the detection cavity (18), a control cavity (48) is arranged in the front end wall of the detection cavity (18), a storage cavity (33) is arranged in the upper end wall of the control cavity (48), a volume adjusting mechanism (75) and a detection mechanism (76) are arranged in the casing (10), the volume adjusting mechanism (75) can be started to adjust the volume of the sound box, the detection mechanism (76) can detect the maximum volume of the sound box and mark the maximum volume of the sound box, a moving plate (21) is connected in the moving cavity (22) in a sliding manner, a connecting rod (43) is fixedly connected to the front end of the moving plate (21), a limiting mechanism (77) is fixedly connected to the front end of the connecting rod (43), the limiting mechanism (77) can start the sound box and input signals into the sound box, and a sensing block (19) is fixedly connected to the left end face of the casing (10);
detection mechanism (76) include hydraulic pump (27) that are equipped with in oil tank (28), hydraulic pump (27) with middle chamber (30) UNICOM that is equipped with in casing (10), control chamber (48) with detection chamber (18) UNICOM department is equipped with vibrating diaphragm (50), vibrating diaphragm (50) fixedly connected with starts piece (44), control chamber (48) upper end wall is equipped with switch (47) that six equidistance distribute, switch (47) can by start piece (44) contact, it is equipped with translation chamber (34) in chamber (33) front end wall to deposit, sliding connection has the other end to be located in translation chamber (34) deposit translation board (46) in chamber (33), translation board (46) fixedly connected with be located deposit adjustment motor (35) in chamber (33), adjustment motor (35) power is connected with carousel (31), six uniformly distributed marking blocks (32) are arranged on the rotary disc (31).
2. The multifunctional sound box performance testing device according to claim 1, characterized in that: the volume adjusting mechanism (75) comprises a sliding plate (23) which is in sliding connection with the sliding cavity (24), a twisting motor (25) is arranged in the sliding plate (23), the twisting motor (25) is in power connection with a twisting shaft (42), and the twisting shaft (42) is fixedly connected with a moving block (41).
3. The multifunctional sound box performance testing device according to claim 2, characterized in that: two fixed cavities (37) which are symmetrical up and down are arranged in the moving block (41), a torsion cavity (39) is arranged in the moving block (41), a connecting block (40) is connected in the fixed cavity (37) in a sliding mode, a fixing plate (38) is fixedly connected to the connecting block (40), the middle cavity (30) can be communicated with the sliding cavity (24) and the moving cavity (22) through pressure valves (29) arranged in the fixed cavity, and the sliding cavity (24) can be communicated with the fixed cavities (37) through the pressure valves (29).
4. The multifunctional sound box performance testing device according to claim 3, characterized in that: soundproof plate (53) is connected in sound insulation chamber (20) sliding, soundproof plate (53) fixedly connected with other end is located intermediate lever (52) in detection chamber (18), intermediate lever (52) fixedly connected with gives sound insulation piece (45).
5. The multifunctional sound box performance testing device according to claim 1, characterized in that: the limiting mechanism (77) comprises a starting plate (51) fixedly connected with the connecting rod (43), a first control cavity (68) is arranged in the starting plate (51), a first control plate (60) is connected in the first control cavity (68) in a sliding mode, a connecting spring (67) is connected between the first control plate (60) and the first control cavity (68), and the first control plate (60) is fixedly connected with two sound source input rods (61).
6. The multifunctional sound box performance testing device according to claim 5, characterized in that: a second control cavity (66) is arranged in the starting plate (51), a second control plate (63) is connected in the second control cavity (66) in a sliding manner, a connecting spring (67) is connected between the second control plate (63) and the second control cavity (66), a power rod (64) is fixedly connected with the second control plate (63), a hydraulic cavity (59) is arranged in the starting plate (51), a hydraulic plate (69) is connected in the hydraulic cavity (59) in a sliding manner, two connecting ropes (62) are fixedly connected with the hydraulic plate (69) and the first control plate (60), and two pulling ropes (65) are fixedly connected with the hydraulic plate (69) and the second control plate (63),
the multifunctional sound box performance testing device of claim 6, characterized in that: the hydraulic starting device is characterized in that a related closing cavity (70) is arranged in the starting plate (51), a closing plate (57) is connected in the closing cavity (70) in a sliding mode, a closing rod (58) is fixedly connected to the closing plate (57), a starting cavity (55) is arranged in the starting plate (51), a starting plate (54) is connected in the starting cavity (55) in a sliding mode, a starting rod (56) is fixedly connected to the starting plate (54), the starting plate (54) is connected with the starting cavity (55) and provided with a return spring (71), and the starting cavity (55) is communicated with the closing cavity (70) and the hydraulic cavity (59) and provided with hydraulic oil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202111056482.9A CN113923576A (en) | 2021-09-09 | 2021-09-09 | Multifunctional sound box performance testing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202111056482.9A CN113923576A (en) | 2021-09-09 | 2021-09-09 | Multifunctional sound box performance testing device |
Publications (1)
Publication Number | Publication Date |
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CN113923576A true CN113923576A (en) | 2022-01-11 |
Family
ID=79234540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202111056482.9A Withdrawn CN113923576A (en) | 2021-09-09 | 2021-09-09 | Multifunctional sound box performance testing device |
Country Status (1)
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CN (1) | CN113923576A (en) |
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2021
- 2021-09-09 CN CN202111056482.9A patent/CN113923576A/en not_active Withdrawn
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Application publication date: 20220111 |