CN218612735U - Pneumatic tightening device convenient to adjust - Google Patents
Pneumatic tightening device convenient to adjust Download PDFInfo
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- CN218612735U CN218612735U CN202222566645.4U CN202222566645U CN218612735U CN 218612735 U CN218612735 U CN 218612735U CN 202222566645 U CN202222566645 U CN 202222566645U CN 218612735 U CN218612735 U CN 218612735U
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- 238000012545 processing Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 abstract description 8
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a pneumatic tightening device convenient for adjustment, which comprises an installation bracket, a pneumatic tightening gun, an air supply pipeline and a control part; the mounting bracket comprises a support frame, a mounting plate and a connecting plate with adjustable height; the mounting plate is arranged above the support frame, and the connecting plate is arranged below the support frame; the pneumatic tightening gun is arranged on the mounting plate; the air supply pipeline is installed along the support frame and is connected with the pneumatic tightening gun; the control part is arranged on the support frame and is respectively connected with the pneumatic tightening gun and the air supply pipeline. The utility model discloses a height-adjustable of connecting plate realization connecting plate of installing support to the assembly line of adaptation co-altitude not, convenient to use, and through air supply line and control unit's cooperation, can realize the accurate state control of pneumatic rifle use of screwing up, be convenient for screw up going on of operation, make things convenient for the automatic system of mill to carry out centralized control to the device simultaneously, realize high-efficient assembly operation.
Description
Technical Field
The utility model relates to a screw up the technical field of rifle, concretely relates to pneumatic tightening device of convenient regulation.
Background
In the automobile production industry, screw tightening operation is an important part of automobile production assembly, so that the screw tightening speed directly influences the assembly efficiency of an automobile in the production process. The prior art uses pneumatic tightening gun to screw up the operation usually, and pneumatic tightening gun needs to be connected with gas supply system's air supply pipe, opens the switch of pneumatic tightening gun during the use, and the air current gets into the inside air compressor machine of pneumatic tightening gun through the air supply pipe and carries out work, later drives the first rotation of criticizing of pneumatic tightening gun and realizes screwing up the operation, convenience simple to use. However, the existing pneumatic tightening gun has no electric signal output, the use state of the pneumatic tightening gun cannot be accurately monitored, whether the electric tightening gun is normally used or not cannot be monitored in the use process, centralized control of an automatic system in a factory is inconvenient, and the work efficiency of the whole automobile assembly line can be affected subsequently.
When the pneumatic tightening gun is used for operation, in order to achieve automatic screw tightening operation of the pneumatic tightening gun, the pneumatic tightening gun is installed on a production line, generally, the pneumatic tightening gun is connected with a support, the support is matched with other equipment of the production line, and when the pneumatic tightening gun is used, a conveying belt of the production line conveys a workpiece to a position where the pneumatic tightening gun is installed, and then the pneumatic tightening gun is used for tightening. However, the height of the existing support is fixed, when the pneumatic tightening gun is matched with the assembly lines with different heights, the support is difficult to be matched with the assembly lines with different heights, the time consumed for finding the support with the proper height again is long, and the pneumatic tightening gun is installed again, so that the operation is complicated and time-consuming, and the operation efficiency of the whole assembly line is influenced.
Disclosure of Invention
Can't monitor the user state when using to above-mentioned pneumatic rifle of screwing up, the current support of installing pneumatic rifle of screwing up is not enough with the assembly line cooperation use of co-altitude not, the utility model provides a height-adjustable conveniently is connected the cooperation with the assembly line, and it is high-efficient convenient to use to can screw up the pneumatic device of screwing up that the rifle user state monitored to pneumatics.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a pneumatic tightening device convenient to adjust comprises an installation support, a pneumatic tightening gun, an air supply pipeline and a control part; the mounting bracket comprises a support frame, a mounting plate and a connecting plate with adjustable height; the mounting plate is arranged above the support frame, and the connecting plate is arranged below the support frame; the pneumatic tightening gun is arranged on the mounting plate; the air supply pipeline is installed along the support frame and is connected with the pneumatic tightening gun; the control part is arranged on the support frame and is respectively connected with the pneumatic tightening gun and the air supply pipeline.
The control part is respectively connected with the pneumatic tightening gun and the air supply pipeline, can control the pneumatics and the stop of the pneumatic tightening gun, and simultaneously receives the air flow change condition inside the air supply pipeline, and proves that the pneumatic tightening gun is started to work when the air flow changes, and proves that the pneumatic tightening gun is in an unused static state when the air flow does not change.
Furthermore, an airflow sensor is arranged inside the air supply pipeline and connected with the control part; the airflow sensor outputs high level when airflow changes occur in the air supply pipeline, and outputs low level when airflow changes do not occur. When the pneumatic tightening gun is used, the control part receives a level signal sent by the airflow sensor on the air supply pipeline, and compares the level signal with the running state of the pneumatic tightening gun to judge whether the current pneumatic tightening gun is in a normal working state.
The control unit determines the mode as follows: when the control part starts the pneumatic tightening gun, the state of the pneumatic tightening gun is recorded as the tightening process, the recorded state is compared with the received level signal in a matching way, if the level signal received by the airflow sensor is high level, the change of the airflow in the air supply pipeline can be obtained when the pneumatic tightening gun is tightened, so that the pneumatic tightening gun operates normally, and the control part judges that the device is normal; if the control part records that the state of the pneumatic tightening gun is in a tightening process and the received level signal of the airflow sensor is low level, the situation that no airflow changes in the air supply pipeline and the pneumatic tightening gun does not operate normally is indicated, and the control part judges that the device is abnormal; when the reverse-positive pneumatic tightening gun stops, the control part records that the state is the tightening stop, and when receiving high level, the control part judges that the device is abnormal, and when receiving low level, the control part judges that the device is normal.
Further, the control component is a touch screen with a built-in plc processing chip; the touch screen is arranged on a supporting frame on the side face of the device, and an internal plc processing chip is connected with the airflow sensor, the air supply pipeline and the pneumatic tightening gun respectively. The program judgment and control of the whole device are realized by the Plc processing chip, the process is displayed through the touch screen, the device is convenient to use, and the Plc processing chip can be controlled through the touch screen, so that the manual control of the device is realized.
Furthermore, the connecting plate comprises a moving plate and connecting parts, the moving plate is of a square structure, extending plates are arranged on the periphery of the moving plate, and the connecting parts are arranged on the extending plates; a plurality of groups of connecting holes are uniformly formed in the supporting frame, and the aperture of each group of connecting holes corresponds to the connecting part. When the connecting plate is used, the moving plate is connected with any group of connecting holes of the supporting frame through the connecting part, and the integral height limit of the connecting plate can be realized; when the height is required to be adjusted, the connecting part is taken out, the movable plate is moved up and down along the support frame, the extension plate corresponds to the hole position of the connecting hole with the required height, and then the connecting part is put on to realize the height adjustment; through the altitude mixture control of connecting plate and support frame for the installing support of device can be connected with the assembly line of co-altitude not, and high easy operation is convenient.
Further, the connecting member includes two set screws provided on the front extension plate and two screws provided on the rear extension plate. The positioning part is matched with the screw through the positioning screw, the positioning screw is quickly and conveniently used for quick positioning connection, the movable plate is prevented from shifting in the using process through the screw connection, and the use safety and stability are guaranteed.
Furthermore, the movable plate is also provided with a pair of positioning strips and a plurality of groups of positioning holes corresponding to the positioning strips, and the positioning strips are connected with a group of positioning holes through positioning blocks. When the mounting bracket is connected with the assembly line, the assembly line needs to pass through the movable plate for mounting, and the arranged positioning strips can limit the position of the assembly line between the two positioning strips, so that the position deviation in the screwing process of the pneumatic screwing gun caused by the position deviation of the assembly line in the using process is prevented, and the screwing error of the pneumatic screwing gun is further caused; and the positioning strip can be used as a positioning part when the mounting bracket is not matched and connected with the assembly line to position a workpiece, so that the screw can be conveniently screwed.
Furthermore, a height adjusting rod is also arranged on the mounting plate; the mounting plate is provided with a step-shaped groove, and the height adjusting rod is fixedly connected with the top of the supporting frame; and the pneumatic tightening gun is provided with a connecting block corresponding to the groove. When the connecting block on the pneumatic tightening gun is connected with the groove of the mounting plate, the pneumatic tightening device can be matched with the mounting bracket for use, and the pneumatic tightening gun can be used independently, is convenient to use, and is convenient to overhaul, maintain or replace due to detachable design; the altitude mixture control pole of mounting panel makes the mounting panel drive pneumatic tightening gun and can reciprocate in the support, is convenient for adjust and use.
Furthermore, the height adjusting rod is a pneumatic telescopic rod, and a telescopic rod of the pneumatic telescopic rod is connected with the mounting plate; the telescopic rods are all connected with the control part. When the device is used, the telescopic rod of the pneumatic telescopic rod is controlled to stretch and retract through the control part to realize height adjustment of the mounting plate in the support frame, the range of distance adjustment between the pneumatic tightening gun and the connecting plate is also enlarged, and the application range of the device is enlarged; the control component is used for adjusting, and the adjustment is simple and the use is convenient.
When the pneumatic tightening gun is used, the pneumatic tightening gun is installed on the installation plate, the air supply pipeline is connected with the pneumatic tightening gun, the installation support is connected with the assembly line in a matched mode, and the connecting plate can be adjusted in height along the support frame when being connected with the assembly lines with different heights in a matched mode; when the pneumatic tightening device is used for tightening, the control part controls the pneumatic tightening gun to be opened, the workpiece is tightened, the air flow inside the air supply pipeline changes at the moment, the air flow change information is transmitted to the control part, and the control part can analyze the using state of the pneumatic tightening gun by monitoring the air flow change state.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:
1. the utility model discloses a height-adjustable of installing support operates, makes things convenient for whole pneumatic tightening device to cooperate with the assembly line of co-altitude not to use, and the air supply line on the installing support uses the state control that realizes the pneumatic rifle use of screwing up with control unit's cooperation, and it is high-efficient convenient to use, and the pneumatic rifle of screwing up of still being convenient for is at the centralized control of automatic system of mill.
2. The utility model discloses airflow sensor is connected with control unit, deuterogamies and connects pneumatic rifle of screwing up for whether control unit can accurately monitor the running state of current device normal when the use of pneumatic rifle of screwing up, the control of control unit high accuracy is convenient for the device at the automatic system centralized control of mill, improves the operating efficiency of whole assembling process.
3. The control component of the utility model adopts a touch screen with a built-in plc processing chip, the plc processing chip is sensitive in control, safe and reliable, and meanwhile, the control condition of the device can be displayed through the touch screen, thereby being convenient for operation and use; the mounting plate of the mounting bracket realizes height adjustment through the height adjusting rod arranged, so that the pneumatic tightening gun and the connecting plate can be conveniently adjusted in height to adapt to assembly and use of more workpieces.
4. The utility model realizes the height adjustment of the connecting plate by matching the movable plate with the connecting component, and is convenient to be matched with a production line; the positioning strips on the moving plate are convenient for limiting the assembly line or the workpiece, so that the phenomenon that the workpiece deviates to cause wrong screwing operation in the using process is prevented, and the accuracy of the device in use is improved.
Drawings
Fig. 1 is a schematic perspective view of a pneumatic tightening device of the present invention, which is convenient to adjust.
Fig. 2 is a schematic diagram of the connection relationship between the pneumatic tightening gun and the mounting plate of the pneumatic tightening device of the present invention.
Fig. 3 is a schematic perspective view of a connecting plate of a pneumatic tightening device of the present invention, which is convenient to adjust.
The attached drawings are as follows:
the pneumatic tightening gun comprises an installation support-1, a support frame-11, a connecting hole-111, an installation plate-12, a height adjusting rod-121, a groove-122, a connecting plate-13, a moving plate-131, a connecting part-132, a positioning strip-133, a positioning hole-134, a positioning block-135, a pneumatic tightening gun-2, a connecting block-21, an air supply pipeline-3, an air flow sensor-31 and a control part-4.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1:
a pneumatic tightening device convenient to adjust comprises a mounting bracket 1, a pneumatic tightening gun 2, an air supply pipeline 3 and a control part 4; the mounting bracket 1 comprises a support frame 11, a mounting plate 12 and a connecting plate 13 with adjustable height; the mounting plate 12 is arranged above the support frame 11, and the connecting plate 13 is arranged below the support frame; the pneumatic tightening gun 2 is arranged on the mounting plate 12; the air supply pipeline 3 is installed along the support frame 11 and is connected with the pneumatic tightening gun 2; the control part 4 is arranged on the support frame 11 and is respectively connected with the pneumatic tightening gun 2 and the air supply pipeline 3.
The control part 4 is respectively connected with the pneumatic tightening gun 2 and the air supply pipeline 3, can control the pneumatics of the pneumatic tightening gun 2 and stop, and simultaneously receives the air flow change condition inside the air supply pipeline 3, and proves that the pneumatic tightening gun 2 is opened to work when the air flow changes, and proves that the pneumatic tightening gun 2 is in an unused static state when the air flow does not change.
When the pneumatic tightening gun is used, the pneumatic tightening gun 2 is installed on the installation plate 12, the air supply pipeline 3 is connected with the pneumatic tightening gun 2, the installation support 1 is connected with a production line in a matched mode, and the connecting plate 13 can be adjusted in height along the support frame 11 when being connected with production lines of different heights in a matched mode; when the pneumatic tightening device is screwed up and operated, the control part 4 controls the pneumatic tightening gun 2 to be opened, the workpiece is screwed up and operated, the air flow inside the air supply pipeline 3 changes at the moment, the air flow change information is transmitted to the control part 4, and the control part 4 can analyze the using state of the pneumatic tightening gun 2 by monitoring the air flow change state.
Example 2:
the difference from the embodiment 1 is that an air flow sensor 31 is arranged inside the air supply pipeline 3, and the air flow sensor 31 is connected with the control part 4; the airflow sensor 31 outputs a high level when airflow variation occurs in the air supply line 3, and outputs a low level when airflow variation does not occur. When the pneumatic tightening gun 2 is in use, the control part 4 receives the level signal sent by the air flow sensor 31 on the air supply pipeline 3 and compares the level signal with the running state of the pneumatic tightening gun 2 to judge whether the pneumatic tightening gun 2 is in a normal working state or not.
The control unit 4 determines the following manner: when the control part 4 starts the pneumatic tightening gun 2, the state of the pneumatic tightening gun 2 is recorded as the tightening process, the recorded state is compared with the received level signal in an information matching way, if the level signal received by the airflow sensor 31 is high level, the change of the airflow inside the air supply pipeline 3 when the pneumatic tightening gun 2 is tightened can be obtained, so that the pneumatic tightening gun 2 normally operates, and the control part 4 judges that the device is normal; if the control part 4 records that the state of the pneumatic tightening gun 2 is in tightening progress and the received level signal of the airflow sensor 31 is low level, it indicates that there is no airflow change in the air supply pipeline 3, the pneumatic tightening gun 2 does not operate normally, and the control part 4 determines that the device is abnormal; when the reverse-positive pneumatic tightening gun 2 stops, the control unit 4 records that the state is a tightening stop, and when a high level is received, the control unit 4 determines that the device is abnormal, and when a low level is received, the control unit 4 determines that the device is normal.
The connecting plate 13 comprises a moving plate 131 and connecting parts 132, the moving plate 131 is of a square structure, extending plates are arranged on the periphery of the moving plate, and the connecting parts 132 are arranged on the extending plates; a plurality of groups of connecting holes 111 are uniformly formed in the support frame 11, and the aperture of each group of connecting holes 111 corresponds to the connecting part 132. When in use, the moving plate 131 is connected with any group of connecting holes 111 of the support frame 11 through the connecting part 132, so that the integral height limit of the connecting plate 13 can be realized; when the height needs to be adjusted, the connecting part 132 is taken out, the moving plate 131 moves up and down along the support frame 11, the extending plate corresponds to the hole position of the connecting hole 111 with the required height, and then the connecting part is put on to realize the height adjustment; through the height adjustment of the connecting plate 13 and the supporting frame 11, the mounting bracket 1 of the device can be connected with assembly lines with different heights, and the height operation is simple and convenient.
The working principle of this embodiment is the same as embodiment 1.
Example 3:
the difference from embodiment 2 is that the connecting member 132 includes two set screws provided on the front extension plate and two screws provided on the rear extension plate. The positioning part is matched with the screw through the positioning screw, the positioning screw is used for rapid positioning connection, the use is rapid and convenient, the movable plate 131 is prevented from shifting in the use process through the screw connection, and the use safety and stability are guaranteed.
The moving plate 131 is further provided with a pair of positioning bars 133 and a plurality of groups of positioning holes 134 corresponding to the positioning bars 133, and the positioning bars 133 are connected with the group of positioning holes 134 through positioning blocks 135. When the mounting bracket 1 is connected with the assembly line, the assembly line needs to pass through the movable plate 131 for mounting, and the arranged positioning strips 133 can limit the position of the assembly line between the two positioning strips 133, so that the position deviation in the screwing process of the pneumatic screwing gun 2 caused by the position deviation of the assembly line in the using process is prevented, and the pneumatic screwing gun 2 is prevented from being screwed by mistake; and the positioning bar 133 can be used as a positioning part when the mounting bracket 1 is not matched and connected with the assembly line to position a workpiece, so that the screw can be conveniently screwed.
The working principle of this embodiment is the same as embodiment 2.
Example 4:
the difference from the embodiment 1 is that the control unit 4 is a touch panel with a plc processing chip inside; the touch screen is arranged on a supporting frame 11 on the side face of the device, and an internal plc processing chip is respectively connected with the air flow sensor 31, the air supply pipeline 3 and the pneumatic tightening gun 2. The program judgment and control of the whole device are realized by the Plc processing chip, the process is displayed through the touch screen, the device is convenient to use, and the Plc processing chip can be controlled through the touch screen, so that the manual control of the device is realized.
The working principle of this embodiment is the same as embodiment 1.
Example 5:
the difference from the embodiment 1 is that the mounting plate 12 is further provided with a height adjusting rod 121; a stepped groove 122 is formed in the mounting plate 12, and the height adjusting rod 121 is fixedly connected with the top of the support frame 11; the pneumatic tightening gun 2 is provided with a connecting block 21 corresponding to the groove 122. When the connecting block 21 on the pneumatic tightening gun 2 is connected with the groove 122 of the mounting plate 12, the pneumatic tightening device can be used in cooperation with the mounting bracket 1, and the pneumatic tightening gun 2 can be used alone, so that the pneumatic tightening gun 2 is convenient to use, and the detachable design facilitates the overhaul, maintenance or replacement of the pneumatic tightening gun 2; the height adjusting rod 121 of the mounting plate 12 enables the mounting plate 12 to drive the pneumatic tightening gun 2 to move up and down in the support, and adjustment and use are facilitated.
The height adjusting rod 121 is a pneumatic telescopic rod, and the telescopic rod of the pneumatic telescopic rod is connected with the mounting plate 12; the telescopic rods are all connected with the control part 4. When the pneumatic tightening device is used, the telescopic rod of the pneumatic telescopic rod is controlled to stretch or retract through the control part 4 to realize height adjustment of the mounting plate 12 in the support frame 11, the distance adjustment range between the pneumatic tightening gun 2 and the connecting plate 13 is also enlarged, and the application range of the device is enlarged; the control component 4 is simple to adjust and convenient to use.
The working principle of this embodiment is the same as embodiment 1.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included in the scope of the claims and description of the present invention.
Claims (8)
1. The utility model provides a convenient pneumatic tightening device who adjusts which characterized in that: comprises a mounting bracket (1), a pneumatic tightening gun (2), an air supply pipeline (3) and a control part (4); the mounting bracket (1) comprises a support frame (11), a mounting plate (12) and a connecting plate (13) with adjustable height; a mounting plate (12) is arranged above the support frame (11), and a connecting plate (13) is arranged below the support frame; the pneumatic tightening gun (2) is arranged on the mounting plate (12); the air supply pipeline (3) is installed along the support frame (11) and is connected with the pneumatic tightening gun (2); the control part (4) is arranged on the support frame (11) and is respectively connected with the pneumatic tightening gun (2) and the air supply pipeline (3).
2. An adjustable pneumatic tightening apparatus, as set forth in claim 1, wherein: an airflow sensor (31) is arranged inside the air supply pipeline (3), and the airflow sensor (31) is connected with the control part (4); the airflow sensor (31) outputs a high level when airflow changes occur in the air supply pipeline (3), and outputs a low level when airflow changes do not occur.
3. An adjustable pneumatic tightening device as defined in claim 1, wherein: the control component (4) is a touch screen with a built-in plc processing chip; the touch screen is arranged on a support frame (11) on the side face of the device, and an internal plc processing chip is respectively connected with the airflow sensor (31), the air supply pipeline (3) and the pneumatic tightening gun (2).
4. An adjustable pneumatic tightening device as defined in claim 1, wherein: the connecting plate (13) comprises a moving plate (131) and connecting parts (132), the moving plate (131) is of a square structure, extending plates are arranged on the periphery of the moving plate, and the connecting parts (132) are arranged on the extending plates; the supporting frame (11) is uniformly provided with a plurality of groups of connecting holes (111), and the aperture of each group of connecting holes (111) corresponds to the connecting part (132).
5. An adjustable pneumatic tightening apparatus, as set forth in claim 4, wherein: the connecting member (132) includes two set screws provided on the front extension plate and two screws provided on the rear extension plate.
6. An adjustable pneumatic tightening apparatus, as set forth in claim 4, wherein: the movable plate (131) is further provided with a pair of positioning strips (133) and a plurality of groups of positioning holes (134) corresponding to the positioning strips (133), and the positioning strips (133) are connected with the groups of positioning holes (134) through positioning blocks (135).
7. An adjustable pneumatic tightening apparatus, as set forth in claim 1, wherein: a height adjusting rod (121) is further arranged on the mounting plate (12); a step-shaped groove (122) is formed in the mounting plate (12), and the height adjusting rod (121) is fixedly connected with the top of the support frame (11); the pneumatic tightening gun (2) is provided with a connecting block (21) corresponding to the groove (122).
8. An adjustable pneumatic tightening device as defined in claim 7, wherein: the height adjusting rod (121) is a pneumatic telescopic rod, and the telescopic rod of the pneumatic telescopic rod is connected with the mounting plate (12); the telescopic rods are all connected with the control part (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222566645.4U CN218612735U (en) | 2022-09-28 | 2022-09-28 | Pneumatic tightening device convenient to adjust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222566645.4U CN218612735U (en) | 2022-09-28 | 2022-09-28 | Pneumatic tightening device convenient to adjust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218612735U true CN218612735U (en) | 2023-03-14 |
Family
ID=85468905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222566645.4U Expired - Fee Related CN218612735U (en) | 2022-09-28 | 2022-09-28 | Pneumatic tightening device convenient to adjust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218612735U (en) |
-
2022
- 2022-09-28 CN CN202222566645.4U patent/CN218612735U/en not_active Expired - Fee Related
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Granted publication date: 20230314 |