CN111323222B - Electric hammer clutch disc tripping torque force testing machine - Google Patents
Electric hammer clutch disc tripping torque force testing machine Download PDFInfo
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- CN111323222B CN111323222B CN202010281343.5A CN202010281343A CN111323222B CN 111323222 B CN111323222 B CN 111323222B CN 202010281343 A CN202010281343 A CN 202010281343A CN 111323222 B CN111323222 B CN 111323222B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to an electric hammer clutch disc tripping torque force testing machine which comprises a machine cabinet, a clutch disc rotating mechanism, a locking mechanism, a pressurizing mechanism, a driving mechanism and a control device, wherein a platen is arranged in the middle of the machine cabinet, the clutch disc rotating mechanism is arranged on the platen, the locking mechanism is arranged on two sides of the clutch disc rotating mechanism, the pressurizing mechanism is arranged right above the clutch disc rotating mechanism, the control device is arranged above the pressurizing mechanism, and the driving mechanism is arranged in a cabinet body at the lower part of the machine cabinet; the invention locks the clutch disc pinion and the gear wheel by arranging the first gear and the second gear which are in adaptive meshing with the clutch disc pinion and the gear wheel, firmly fixes the clutch disc in the clutch disc seat without deviation by arranging the pressure head which is in meshing with the end surface of the clutch disc for pressurization, and fixedly connects the clutch disc rotating mechanism with the driving mechanism, thereby simulating the actual working state of the electric hammer clutch disc and improving the working efficiency and the accuracy of the tripping torque force test.
Description
Technical Field
The invention relates to the field of testing equipment, in particular to a test machine for tripping torque of a clutch disc of an electric hammer.
Background
The clutch disc of the electric hammer is a key part of the electric hammer, and the clutch disc (see fig. 1) consists of a pinion 101, a gearwheel 102, a bearing, a spring and the like, and the tripping performance of the clutch disc is directly related to the safe operation of the electric hammer. The tripping and clutch torque force of the clutch disc needs to be tested to determine how much torque force the clutch disc can trip. Because the electric hammer clutch disc is a very irregular gear structure, the clamping and fixing are very difficult, the testing efficiency is low, and the testing precision cannot be mastered. The conventional torque testing equipment cannot be used for testing the torque of the electric hammer clutch disc, so that the torque testing equipment specially used for the electric hammer clutch disc needs to be developed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the electric hammer clutch disc tripping torque force testing machine which is convenient and reliable to clamp, high in working efficiency and high in testing precision.
The invention is realized by the following scheme: the invention discloses an electric hammer clutch disc tripping torque force testing machine which comprises a machine cabinet, a clutch disc rotating mechanism, a locking mechanism, a pressurizing mechanism, a driving mechanism and a control device, wherein a platen is arranged in the middle of the machine cabinet, the clutch disc rotating mechanism is arranged on the platen, the locking mechanism is arranged on two sides of the clutch disc rotating mechanism, the pressurizing mechanism is arranged right above the clutch disc rotating mechanism, the control device is arranged above the pressurizing mechanism, and the driving mechanism is arranged in a cabinet body at the lower part of the machine cabinet;
the clutch disc rotating mechanism comprises a bottom plate, the bottom plate is located in the middle of the bedplate, vertical plates are respectively fixed at two ends of the bottom plate, an upper plate is fixed on each vertical plate, a clutch disc seat is arranged in the center of the upper plate and used for placing a clutch disc, two fixing rods are arranged below the upper plate and tightly attached to the upper plate, one end of each fixing rod is fixedly connected with the corresponding vertical plate, the other end of each fixing rod is movably connected with a first gear, the tooth surface of each first gear is in fit engagement with a clutch disc pinion, the number of the first gears is two, a connecting plate is arranged on the bottom plate, the clutch disc rotating mechanism is fixedly connected with the driving mechanism through the connecting plate, the clutch disc is fixed through the clutch disc seat in the middle of the upper plate, and the clutch disc pinion is locked through the first gear;
the locking mechanism comprises a first air cylinder, the first air cylinder is installed on the bedplate through an air cylinder fixing seat, the output end of the first air cylinder is connected with a telescopic rod, the middle part of the telescopic rod is provided with a supporting block, the upper end of the supporting block is provided with a hole for the telescopic rod to penetrate through, one end of the telescopic rod, far away from the first air cylinder, is connected with a gear shaft, the lower part of the gear shaft is movably connected with a second gear, the tooth surface of the second gear is in fit engagement with a large gear of the clutch disc, two pairs of the first air cylinder, the telescopic rod and the second gear are respectively and symmetrically arranged on two sides of the clutch disc rotating mechanism, the telescopic rod and the second gear are arranged on two sides above the upper plate, the large gear of the clutch disc is locked through the locking mechanism, after the clutch disc is placed in the clutch disc seat, the first air cylinder is started to drive the telescopic rod to extend towards the direction of the clutch disc seat, and further push the second gear to be engaged with the large gear of the clutch disc, the clutch disc is reliably fixed, and meanwhile, the second gear can rotate along with the clutch disc due to the fact that the second gear is movably connected with the gear shaft, so that torque force testing is facilitated;
the pressurizing mechanism comprises a second cylinder which is fixed on a cylinder fixing plate, a supporting rod is connected below the cylinder fixing plate, four support rods are arranged, the support rods are fixed on the bedplate, the output end of the second cylinder is connected with a pressure rod, the lower end of the pressure lever is fixed with a pressure head through a bolt, the pressure head is provided with an end face engaged with the end face of the clutch disc, one end of the pressure lever close to the cylinder fixing plate is connected with a pressure plate which is in an isosceles triangle shape, the top angle of the pressure plate is fixedly connected with the pressure lever, the two bottom angles of the pressure plate are movably connected with the support rod, the pressure bar is supported by the pressure plate, two sides of the support bar, which are positioned at the rear side, are provided with auxiliary bars, the upper end of the auxiliary rod is connected with a cross rod, the cross rod is provided with a hole for the support rod to penetrate through, and the clutch disc is applied with test pressure through the pressurizing mechanism;
the driving mechanism comprises a servo motor, the output end of the servo motor is connected with a first coupler, the upper end of the first coupler is connected with a torque sensor, the upper end of the torque sensor is connected with a second coupler, the upper end of the second coupler is connected with a rotating shaft, the rotating shaft penetrates through the bedplate and is fixedly connected with the connecting plate on the clutch disc rotating mechanism, the driving mechanism is provided with a motor fixing seat, the upper end of the motor fixing seat is fixedly connected with the bedplate, the driving mechanism is vertically fixed below the bedplate through the motor fixing seat, the driving mechanism outputs power to drive the clutch disc rotating mechanism to rotate together with the clutch disc on the clutch disc rotating mechanism, the pressurizing mechanism continuously pressurizes until the clutch disc is tripped in the rotating process, and the tripping torque force of the clutch disc is tested through a torque sensor on the driving mechanism;
the control device is provided with a touch screen, a switch and a warning lamp, the servo motor and the torque sensor are electrically connected with the control device, and test parameters are set through the control device, and test results are stored and displayed.
Compared with the prior art, the invention has the following beneficial effects:
1) the clutch plate is locked by the first gear which is arranged and meshed with the clutch plate pinion in a matching mode, and the second gear which is arranged and meshed with the clutch plate gear in a matching mode locks the clutch plate gear, so that the clutch plate is firmly fixed in the clutch plate seat and cannot deviate, the problem that the clutch plate is of a very irregular gear structure, clamping is very difficult to fix, and the problems that the testing efficiency is low and the testing precision cannot be controlled are solved.
2) Through setting up clutch disc slewing mechanism, with clutch disc slewing mechanism and actuating mechanism fixed connection, servo motor drives first shaft coupling, second shaft coupling and pivot, and then drives slewing mechanism and rotate in step for pressure can directly conduct on the torque sensor, has improved work efficiency.
3) The pressure head is pressurized through being meshed with the end face of the clutch disc, the first gear is movably connected with the fixed rod, the second gear is movably connected with the gear shaft, the first gear and the second gear can synchronously rotate along with the clutch disc when the clutch disc is locked, the actual working state of the electric hammer clutch disc can be simulated, the tripping torque force of the clutch disc is consistent with the actual working state, and the accuracy of the tripping torque force test is improved.
Drawings
Fig. 1 is a structure diagram of an electric hammer clutch disk.
Fig. 2 is an overall structure diagram of the electric hammer clutch disc tripping torque tester of the invention.
Fig. 3 is a schematic diagram of a main mechanism of the electric hammer clutch disc tripping torque testing machine according to the present invention.
Fig. 4 is a schematic diagram of a clutch plate locking state of the electric hammer clutch plate tripping torque tester according to the present invention.
In the figure: 100. a clutch plate; 101. a clutch disc pinion; 102. a clutch plate gearwheel; 1. a cabinet; 2. a clutch disc rotating mechanism; 3. a locking mechanism; 4. a pressurizing mechanism; 5. a drive mechanism; 6. a control device; 11. a platen; 21. a base plate; 22. a vertical plate; 23. an upper plate; 24. a clutch disc seat; 25. fixing the rod; 26. a first gear; 27. a connecting plate; 31. a first cylinder; 32. a cylinder fixing seat; 33. a telescopic rod; 34. a support block; 35. a gear shaft; 36. a second gear; 41. a second cylinder; 42. a cylinder fixing plate; 43. a support bar; 44. a pressure lever; 45. a pressure head; 46. pressing a plate; 47. an auxiliary lever; 48. a cross bar; 51. a servo motor; 52. a first coupling; 53. a torque sensor; 54. a second coupling; 55. a rotating shaft; 56. motor fixing base.
Detailed Description
The invention is further illustrated by the following specific examples:
in the embodiment, with reference to fig. 1 to 4, the electric hammer clutch disc tripping torque force testing machine comprises a machine cabinet 1, a clutch disc rotating mechanism 2, a locking mechanism 3, a pressurizing mechanism 4, a driving mechanism 5 and a control device 6, wherein a table plate 11 is arranged in the middle of the machine cabinet 1, the clutch disc rotating mechanism 2 is arranged on the table plate 11, the locking mechanisms 3 are arranged on two sides of the clutch disc rotating mechanism 2, the pressurizing mechanism 4 is arranged right above the clutch disc rotating mechanism 2, the control device 6 is arranged above the pressurizing mechanism 4, and the driving mechanism 5 is arranged in a cabinet body at the lower part of the machine cabinet 1.
The clutch disc rotating mechanism 2 comprises a bottom plate 21, the bottom plate 21 is located in the middle of the bedplate 11, vertical plates 22 are respectively fixed at two ends of the bottom plate 21, an upper plate 23 is fixed on each vertical plate 22, a clutch disc seat 24 is arranged at the center of each upper plate 23, the clutch disc seat 24 is used for placing a clutch disc 100, two fixing rods 25 are arranged under the upper plates 23 and tightly attached to the upper plates 23, one end of each fixing rod 25 is fixedly connected with the corresponding vertical plate 22, the other end of each fixing rod 25 is movably connected with a first gear 26, the tooth surface of each first gear 26 is in fit engagement with a clutch disc pinion 101, two first gears 26 are arranged, a connecting plate 27 is arranged on the bottom plate 21, the clutch disc rotating mechanism 2 is fixedly connected with the driving mechanism 5 through the connecting plate 27, and the clutch disc 100 is fixed through the clutch disc seat 24 in the middle of the upper plates 23, and the clutch disc pinion 101 is locked by the first gear 26, so that the locking structure is stable and reliable.
The locking mechanism 3 comprises a first air cylinder 31, the first air cylinder 31 is installed on the bedplate 11 through an air cylinder fixing seat 32, an output end of the first air cylinder 31 is connected with an expansion link 33, a supporting block 34 is arranged in the middle of the expansion link 33, a hole for the expansion link to penetrate through is arranged at the upper end of the supporting block 34, one end of the expansion link 33, far away from the first air cylinder 31, is connected with a gear shaft 35, a second gear 36 is movably connected below the gear shaft 35, the gear surface of the second gear 36 is in fit engagement with the clutch disc big gear 102, two pairs of the first air cylinder 31, the expansion link 33 and the second gear 36 are respectively and symmetrically arranged on two sides of the clutch disc rotating mechanism 3, the expansion link 33 and the second gear 36 are arranged on two sides above the upper plate 23, the clutch disc big gear 102 is locked through the locking mechanism 3, and after the clutch disc 100 is placed in the clutch disc seat 24, the first air cylinder 31 is started to drive the expansion link 33 to extend towards the clutch disc seat 24, and then the second gear 36 is pushed to be meshed with the large clutch disc gear 102, so that the clutch disc 100 is reliably fixed, and meanwhile, the second gear 36 is movably connected with the gear shaft 35, so that the second gear can rotate along with the clutch disc 100, and the torque test is convenient.
The pressurizing mechanism 4 comprises a second cylinder 41, the second cylinder 41 is fixed on a cylinder fixing plate 42, a support rod 43 is connected below the cylinder fixing plate 42, four support rods 43 are arranged, the support rod 43 is fixed on the bedplate 11, the output end of the second cylinder 41 is connected with a press rod 44, the lower end of the press rod 44 is fixed with a press head 45 through a bolt, the press head 45 is provided with an end surface meshed with the end surface of the clutch disc 100, one end of the press rod 44 close to the cylinder fixing plate 42 is connected with a press plate 46, the press plate 46 is an isosceles triangle, the vertex angle of the press plate 46 is fixedly connected with the press rod 44, two base angles of the press plate 46 are movably connected with the support rod 43, the press rod 44 is supported through the press plate 46, two sides of the support rod 43 at the rear side are provided with auxiliary rods 47, the upper ends of the auxiliary rods 47 are connected with a cross rod 48, the cross bar 48 is provided with a hole for the support rod 43 to pass through, and the test pressure is applied to the clutch disc 100 by the pressurizing mechanism 4.
The driving mechanism 5 comprises a servo motor 51, the output end of the servo motor 51 is connected with a first coupler 52, the upper end of the first coupling 52 is connected with a torque sensor 53, the upper end of the torque sensor 53 is connected with a second coupling 54, the upper end of the second coupling 54 is connected with a rotating shaft 55, the rotating shaft 55 penetrates through the bedplate 11 and then is fixedly connected with the connecting plate 27 on the clutch disc rotating mechanism 2, the driving mechanism 5 is provided with a motor fixing seat 56, the upper end of the motor fixing seat 56 is fixedly connected with the bedplate 11, the driving mechanism 5 is vertically fixed below the bedplate 11 through the motor fixing seat 56, the driving mechanism 5 outputs power to drive the clutch plate rotating mechanism 2 to rotate together with the clutch plate 100 on the clutch plate rotating mechanism 2, and the torque sensor 53 on the driving mechanism 5 is used for testing the tripping torque of the clutch plate.
The control device 6 is provided with a touch screen, a switch and a warning lamp, the servo motor 51 and the torque sensor 53 are electrically connected with the control device 6, and test parameters are set through the control device 6 to store and display test results.
The working principle of the invention is as follows: firstly, the clutch disc 100 is placed into the clutch disc seat 24, and the clutch disc pinion 101 faces downwards so that the pinion 101 is meshed and locked with the first gear 26; then, the first cylinder 31 is started, the telescopic rod 33 is pushed to extend out, and the second gear 36 is pushed to be meshed and locked with the large clutch disc gear 102; then, the second air cylinder 41 is started to push the pressure rod 44 to press downwards so that the pressure head 45 presses the clutch disc 100 tightly; finally, the servo motor 51 is started to drive the first coupler 52, the second coupler 54 and the rotating shaft 55, so as to drive the clutch disc rotating mechanism 2 to synchronously rotate, the pressurizing mechanism 4 continuously pressurizes until the clutch disc 100 is tripped in the rotating process, and the torque sensor 53 transmits torque data to the control device 6, so as to measure the tripping torque of the clutch disc 100.
Compared with the prior art, the invention has the following beneficial effects:
4) the clutch plate is locked by the first gear which is arranged and meshed with the clutch plate pinion in a matching mode, and the second gear which is arranged and meshed with the clutch plate gear in a matching mode locks the clutch plate gear, so that the clutch plate is firmly fixed in the clutch plate seat and cannot deviate, the problem that the clutch plate is of a very irregular gear structure, clamping is very difficult to fix, and the problems that the testing efficiency is low and the testing precision cannot be controlled are solved.
5) Through setting up clutch disc slewing mechanism, with clutch disc slewing mechanism and actuating mechanism fixed connection, servo motor drives first shaft coupling, second shaft coupling and pivot, and then drives slewing mechanism and rotate in step for pressure can directly conduct on the torque sensor, has improved work efficiency.
6) The pressure head is pressed by the aid of the pressure head which is meshed with the end face of the clutch disc, the first gear is movably connected with the fixed rod, the second gear is movably connected with the gear shaft, the first gear and the second gear can synchronously rotate along with the clutch disc when the clutch disc is locked, actual working states of the clutch disc can be simulated, tripping torque force of the clutch disc is consistent with actual tripping torque force, and accuracy of a tripping torque force test is improved.
Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and various changes in form and details may be made within the scope of the appended claims.
Claims (1)
1. The utility model provides an electric hammer clutch disc dropout torsion test machine which characterized in that: the automatic clutch mechanism comprises a cabinet (1), a clutch disc rotating mechanism (2), a locking mechanism (3), a pressurizing mechanism (4), a driving mechanism (5) and a control device (6), wherein a bedplate (11) is arranged in the middle of the cabinet (1), the clutch disc rotating mechanism (2) is arranged on the bedplate (11), the locking mechanism (3) is arranged on two sides of the clutch disc rotating mechanism (2), the pressurizing mechanism (4) is arranged right above the clutch disc rotating mechanism (2), the control device (6) is arranged above the pressurizing mechanism (4), and the driving mechanism (5) is arranged in a cabinet body on the lower portion of the cabinet (1);
the clutch disc rotating mechanism (2) comprises a bottom plate (21), the bottom plate (21) is located in the middle of the bedplate (11), vertical plates (22) are fixed at two ends of the bottom plate (21) respectively, an upper plate (23) is fixed on each vertical plate (22), a clutch disc seat (24) is arranged at the center of each upper plate (23), a clutch disc (100) is placed on each clutch disc seat (24), fixing rods (25) are arranged under the upper plates (23) and tightly attached to the upper plates (23), two fixing rods (25) are arranged, one ends of the fixing rods (25) are fixedly connected with the vertical plates (22), the other ends of the fixing rods (25) are movably connected with first gears (26), the tooth surfaces of the first gears (26) are in adaptive meshing with clutch disc pinions (101), two first gears (26) are arranged, and connecting plates (27) are arranged on the bottom plate (21), the clutch disc rotating mechanism (2) is fixedly connected with the driving mechanism (5) through the connecting plate (27);
the locking mechanism (3) comprises a first air cylinder (31), the first air cylinder (31) is installed on the bedplate (11) through an air cylinder fixing seat (32), the output end of the first air cylinder (31) is connected with an expansion link (33), the middle part of the expansion link (33) is provided with a supporting block (34), a hole for a telescopic rod to penetrate through is arranged at the upper end of the supporting block (34), a gear shaft (35) is connected to one end of the telescopic rod (33) far away from the first cylinder (31), a second gear (36) is movably connected below the gear shaft (35), the tooth surface of the second gear (36) is in fit engagement with the large gear (102) of the clutch disc, two pairs of the first cylinder (31), the telescopic rod (33) and the second gear (36) are respectively and symmetrically arranged at two sides of the clutch disc rotating mechanism (2), the telescopic rod (33) and the second gear (36) are positioned on two sides above the upper plate (23);
the pressurizing mechanism (4) comprises a second air cylinder (41), the second air cylinder (41) is fixed on an air cylinder fixing plate (42), a supporting rod (43) is connected below the air cylinder fixing plate (42), four supporting rods (43) are arranged, the supporting rods (43) are fixed on the bedplate (11), the output end of the second air cylinder (41) is connected with a pressing rod (44), a pressing head (45) is fixed at the lower end of the pressing rod (44) through a bolt, the pressing head (45) is provided with an end face meshed with the end face of the clutch disc (100), one end, close to the air cylinder fixing plate (42), of the pressing rod (44) is connected with a pressing plate (46), the pressing plate (46) is in an isosceles triangle shape, the top angle of the pressing plate (46) is fixedly connected with the pressing rod (44), two bottom angles of the pressing plate (46) are movably connected with the supporting rods (43), two sides, located at the rear side, of the supporting rods (43) are provided with auxiliary rods (47), the upper end of the auxiliary rod (47) is connected with a cross rod (48), and the cross rod (48) is provided with a hole for the support rod (43) to penetrate through;
the driving mechanism (5) comprises a servo motor (51), the output end of the servo motor (51) is connected with a first coupler (52), the upper end of the first coupler (52) is connected with a torque sensor (53), the upper end of the torque sensor (53) is connected with a second coupler (54), the upper end of the second coupler (54) is connected with a rotating shaft (55), the rotating shaft (55) penetrates through the bedplate (11) and then is fixedly connected with the connecting plate (27) on the clutch disc rotating mechanism (2), a motor fixing seat (56) is arranged on the driving mechanism (5), and the upper end of the motor fixing seat (56) is fixedly connected with the bedplate (11);
the control device (6) is provided with a touch screen, a switch and a warning lamp, and the servo motor (51) and the torque sensor (53) are electrically connected with the control device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010281343.5A CN111323222B (en) | 2020-04-10 | 2020-04-10 | Electric hammer clutch disc tripping torque force testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010281343.5A CN111323222B (en) | 2020-04-10 | 2020-04-10 | Electric hammer clutch disc tripping torque force testing machine |
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| Publication Number | Publication Date |
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| CN111323222A CN111323222A (en) | 2020-06-23 |
| CN111323222B true CN111323222B (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010281343.5A Active CN111323222B (en) | 2020-04-10 | 2020-04-10 | Electric hammer clutch disc tripping torque force testing machine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114964591B (en) * | 2022-06-06 | 2024-04-16 | 金华市宇辰粉末冶金有限公司 | Special torsion testing device for driving teeth and testing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19641618A1 (en) * | 1996-10-09 | 1998-04-30 | Hilti Ag | Accident prevention device for hand-controlled machine tools |
| CN202177478U (en) * | 2011-08-04 | 2012-03-28 | 李红 | Tripping torque testing machine of electric hammer |
| CN105334017B (en) * | 2015-10-16 | 2018-05-04 | 浙江高光数控科技有限公司 | Electric tool rotary impact test machine |
| CN108646120B (en) * | 2018-07-16 | 2024-04-12 | 苏州劲翔电子科技有限公司 | Comprehensive testing equipment for anti-blocking performance of electric hammer |
| CN109932156B (en) * | 2019-02-19 | 2024-05-03 | 浙江乾缘智能科技有限公司 | Electric hammer working condition testing machine |
| CN212340641U (en) * | 2020-04-10 | 2021-01-12 | 金华德器自动化科技有限公司 | Electric hammer clutch disc tripping torque force testing machine |
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2020
- 2020-04-10 CN CN202010281343.5A patent/CN111323222B/en active Active
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Denomination of invention: A testing machine for the release torque of the electric hammer release plate Effective date of registration: 20230726 Granted publication date: 20211001 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Jinhua Wuyi sub branch Pledgor: Jinhua De Instrument Automation Technology Co.,Ltd. Registration number: Y2023980049864 |