CN112097976A - Fuse formula is experimental auxiliary device of contact clamp force for isolator - Google Patents
Fuse formula is experimental auxiliary device of contact clamp force for isolator Download PDFInfo
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- CN112097976A CN112097976A CN202010801741.5A CN202010801741A CN112097976A CN 112097976 A CN112097976 A CN 112097976A CN 202010801741 A CN202010801741 A CN 202010801741A CN 112097976 A CN112097976 A CN 112097976A
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- plate
- top pressure
- handle
- pressure plates
- auxiliary device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention relates to a contact clamping force test auxiliary device for a fuse type disconnecting switch. Experimental auxiliary device of contact clamp force for fuse formula isolator includes: the two top pressure plates are arranged in parallel at intervals, and the opposite sides of the two top pressure plates are in top pressure fit with the inner sides of the bending sections of the upper handles of the cover plates; the traction plate is positioned between the two top pressure plates, the traction plate is provided with a hook hole and a handle pushing part, the hook hole is used for hooking a hook of the tension meter, and the handle pushing part is in pushing fit with the handheld section of the handle so as to drive the handle to move together when the tension meter pulls the traction plate; compression elastic parts are arranged between the traction plate and the two top pressure plates, the compression elastic parts apply elastic acting forces which are far away from each other to the traction plate and the corresponding top pressure plates, and the elastic acting forces applied to the two top pressure plates are the same, so that the traction plate is positioned in the middle of the two top pressure plates. The problem of the drag hook of tensiometer be difficult to when the handheld section of hook handle is placed in the middle among the prior art is solved.
Description
Technical Field
The invention relates to a contact clamping force test auxiliary device for a fuse type disconnecting switch.
Background
For a fuse type isolating switch, a fusible core of the fuse type isolating switch is required to be rapidly heated and fused when fault current such as short circuit occurs so as to break a loop and ensure the safety of other equipment, so that the internal resistance of the fusible core cannot be greatly reduced. In order to reduce the temperature rise of the fuse type isolating switch, the specifications of the copper bars of the incoming and outgoing lines of the fuse type isolating switch are generally increased, the ventilation and heat dissipation holes are additionally formed in the shell of the fuse type isolating switch, the contact area of the fusible core and the contact is increased, the clamping force of the contact is increased, and the like. The mode of increasing the contact clamping force can reduce the contact resistance between the contact and the fusible core, thereby reducing the heat productivity. The contact clamping force test can reflect the contact performance between the contact and the fusible core from the side surface.
The utility model discloses a chinese utility model patent that grant publication number is CN211016888U discloses a fuse formula isolator, including outside casing and apron, the apron articulates on outside casing, be equipped with first static contact and second static contact in the outside casing, be equipped with the fusible core on the apron, open or close the apron through the handle on the apron, realize the fusible core disconnection or communicate two static contacts, and then realize fuse formula isolator's deciliter, wherein, the handle has handheld section and the section of bending, the section of bending sets up the both ends in handheld section, is used for connecting handheld section and apron.
In the prior art, when a contact clamping force test is carried out, the draw hook of the tension meter is directly hooked on the handheld section of the cover plate handle, the pull handle enables the fusible core to be separated from the two contacts, and the force required by separation of the fusible core and the contacts is measured.
Disclosure of Invention
The invention aims to provide a contact clamping force test auxiliary device for a fuse type disconnecting switch, and the contact clamping force test auxiliary device is used for solving the technical problem that a draw hook of a tension meter in the prior art is not easy to center when hooking a handheld section of a handle.
In order to achieve the purpose, the technical scheme of the contact clamping force test auxiliary device for the fuse type isolating switch is as follows:
experimental auxiliary device of contact clamp force for fuse formula isolator includes:
the two top pressure plates are arranged in parallel at intervals, and the opposite sides of the two top pressure plates are used for being in top pressure fit with the inner sides of the bending sections of the handles on the cover plate;
the traction plate is positioned between the two top pressure plates, the traction plate is provided with a hook hole and a handle pushing part, the hook hole is positioned in the middle of the top pressure plates and used for hooking a hook of the tension meter, and the handle pushing part is used for being matched with a handheld section of the handle in a pushing mode so as to drive the handle to move together when the tension meter pulls the traction plate;
and compression elastic parts are arranged between the traction plate and the two top pressure plates, the compression elastic parts apply elastic acting forces which are far away from each other to the traction plate and the corresponding top pressure plates, and the elastic acting forces applied to the two top pressure plates are the same, so that the traction plate is positioned in the middle of the two top pressure plates.
The beneficial effects are that: during testing, the two top pressing plates are pressed by two hands to enable the two top pressing plates to approach each other so as to compress the compression-type elastic piece; then, the two top pressure plates and the traction plate are arranged on the hand-held section of the handle; then, both hands are loosened, and the two top pressure plates are mutually far away under the elastic acting force of the compression type elastic piece until the opposite sides of the two top pressure plates are pressed on the bending section of the handle; because the elastic acting forces applied to the two top pressure plates are the same, the traction plate is positioned in the middle of the two top pressure plates, namely, the hook hole on the traction plate is positioned in the middle of the handle holding section. When the hook of the tension meter is hooked on the hook hole, the hand-held section of the handle can be pulled vertically in the middle, so that the clamping force of the contact of the fuse type disconnecting switch can be reflected on the right side face, and reliable guarantee is provided for screening out the fuse type disconnecting switch meeting the requirements through tests.
Furthermore, a compression type elastic part is arranged between the traction plate and the two top pressure plates, and the specifications of the two compression type elastic parts are the same.
Furthermore, support shafts are respectively arranged on the opposite sides of the two top pressure plates, the two support shafts are coaxial and are arranged at intervals, and the traction plate is assembled on the two support shafts in a sliding manner; the compression elastic piece is a compression spring which is sleeved on the corresponding support shaft, one end of the compression spring is pressed against the traction plate, and the other end of the compression spring is pressed against the corresponding pressing plate.
The beneficial effects are that: the supporting shaft is arranged on the top pressing plate, so that the installation of the pressure spring is facilitated, and the pressure spring is guided in the expansion process of the pressure spring.
Furthermore, the opposite ends of the two support shafts are provided with limiting parts, and the limiting parts are used for limiting the traction plate so as to prevent the traction plate from slipping off from the support shafts.
The beneficial effects are that: design like this, make the experimental auxiliary device of contact clamp force can not be a pile of parts, be convenient for install the experimental auxiliary device of contact clamp force on the handle, improve test efficiency.
Furthermore, the limiting part is a limiting nut, and the limiting nut is in threaded connection with the corresponding support shaft.
The beneficial effects are that: due to the design, the pressure spring on the supporting shaft can be replaced conveniently.
Further, the pulling plate is rotatably assembled on the two supporting shafts.
Furthermore, the traction plate comprises a plate body which is of a U-shaped structure and comprises two parallel plate sections and a connecting plate section, the hook holes are formed in the parallel plate sections, and the connecting plate section forms the handle pushing part.
The beneficial effects are that: due to the design, the traction plate can wrap the handheld section of the handle, the handle is guaranteed not to be separated from the traction plate, and the stability of pushing the handle pushing part of the traction plate and the handheld section of the handle in a pushing fit mode is improved.
Further, during the test, the opening of the plate body faces the horizontal direction, the two parallel plate sections are respectively an upper parallel plate section and a lower parallel plate section, and the upper parallel plate section is of a triangular structure.
The beneficial effects are that: go up parallel board section and be triangle-shaped board section, the design not only can save material like this, is convenient for install the tractive board on the handheld section of handle moreover.
Further, the cross section of the connecting plate section is arc-shaped.
The beneficial effects are that: by the design, the handle can be prevented from moving up and down in the pushing process.
Furthermore, a U-shaped notch is formed in the top pressure plate, and the top pressure plate is in guide fit with the handheld section of the handle through the U-shaped notch.
The beneficial effects are that: the handle is prevented from deviating in the process that the two top pressing plates are away from each other under the action of elastic force, and the stability of the two top pressing plates in the movement process is ensured.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of a contact clamping force test auxiliary device for a fuse-type disconnecting switch according to the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a schematic structural diagram of the auxiliary device for testing the contact clamping force in FIG. 1 applied to a fuse type disconnecting switch;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
in the figure: 101-a housing; 102-a cover plate; 103-a handle; 104-contact clamping force test auxiliary device; 1-left top pressure plate; 2, pressing a spring; 3-ear plate; 4-rotating the sleeve; 5-supporting the shaft; 6-a limit nut; 7-connecting plate segments; 8-upper parallel plate section; 9-lower parallel plate section; 10-right top pressure plate; 11-U-shaped notch; 12-hook hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1 and 2, the contact clamping force test auxiliary device 104 includes a left pressing plate 1 and a right pressing plate 10, the left pressing plate 1 and the right pressing plate 10 are arranged in parallel at an interval, and the right side of the left pressing plate 1 and the left side of the right pressing plate 10 are both provided with support shafts 5, that is, the two support shafts 5 are arranged at opposite sides of the two pressing plates, and the support shafts 5 are arranged perpendicular to the respective pressing plates, wherein the two support shafts 5 are arranged coaxially and at an interval. The opposite sides of the two top pressure plates are used for being in top pressure fit with the inner sides of the bending sections of the handles on the cover plate.
In this embodiment, a drawplate is arranged between the left top plate 1 and the right top plate 10, the drawplate includes a plate body and a rotation matching portion, and the drawplate is not only slidably assembled on the two support shafts 5, but also rotatably assembled on the two support shafts 5 through the rotation matching portion. Specifically, the plate body is of a U-shaped structure, during testing, the opening of the plate body faces the horizontal direction, the plate body comprises an upper parallel plate section 8, a lower parallel plate section 9 and a connecting plate section 7, and the connecting plate section 7 is connected with the two parallel plate sections; as shown in fig. 3, the upper parallel plate section 8 and the lower parallel plate section 9 are both provided with hook holes 12, both the hook holes 12 are round holes and are coaxially arranged, and the hook holes 12 are used for hooking a hook of a tension meter; the connecting plate section 7 is used for being matched with the bending section of the handle in a pushing mode so as to drive the handle to move together when the tension meter pulls the traction plate. Wherein the connecting plate section 7 constitutes a handle pushing part.
In this embodiment, the cross section of the connecting plate section 7 is arc-shaped, that is, the connecting plate section 7 is an arc-shaped plate section, so that the handle can be prevented from moving up and down in the process of being pulled. In other embodiments, the cross-section of the connecting plate segment may be in-line, i.e. the connecting plate segment is a rectangular plate segment.
In the embodiment, the upper parallel plate section 8 is a triangular plate section, so that the design can save materials and is convenient for installing the traction plate on the handheld section of the handle; the lower parallel plate section 9 is a rectangular plate section. In other embodiments, the upper parallel plate segment may be a rectangular plate segment.
As shown in fig. 1, the rotation matching portion comprises an ear plate 3 and a rotation sleeve 4, the rotation sleeve 4 is arranged on one side of the ear plate 3, a shaft hole is formed in the ear plate 3, the rotation sleeve 4 and the shaft hole are coaxially arranged to allow the supporting shaft 5 to penetrate, the rotation sleeve 4 can increase the contact area of the rotation matching portion and the supporting shaft 5, and the stability of the rotation of the traction plate on the two supporting shafts 5 is guaranteed. Wherein two swivel sleeves 4 are arranged on opposite sides of the two ear plates 3.
In this embodiment, two supporting shafts 5 are respectively sleeved with a pressure spring 2, and the specifications of the two pressure springs 2 are the same, so as to ensure that the elastic acting forces applied to the two top pressure plates are the same, wherein the pressure springs 2 form a compression type elastic member. In this embodiment, one end of the compression spring 2 is pressed against the ear plate 3, and the other end is pressed against the corresponding pressing plate. Wherein, the pressure spring 2 constitutes a compression elastic member, and in other embodiments, the compression elastic member may be a rubber sleeve with better elasticity.
As shown in fig. 1, the supporting shaft 5 includes a light shaft section and a thread section, the cross section of the light shaft section is circular, the pressure spring 2, the lug plate 3 and the rotating sleeve 4 are all sleeved on the light shaft section, the thread section is connected with a limit nut 6, the limit nut 6 is used for limiting the rotating sleeve 4 so as to prevent the traction plate from deviating from the supporting shaft 5, and moreover, the limit nut 6 is connected to the thread section in a thread manner so as to facilitate the replacement of the pressure spring 2.
As shown in fig. 3, U-shaped notches 11 are formed in the left top plate 1 and the right top plate 10, the U-shaped notches 11 extend obliquely upward, and the U-shaped notches 11 are used for guiding and matching with the hand-held section of the handle, so that the left top plate 1 and the right top plate 10 are prevented from deviating from the handle in the process of being away from each other.
As shown in fig. 4 to 6, in the test, the left top pressing plate 1 and the right top pressing plate 10 are pressed by two hands to make the two top pressing plates approach each other, so as to compress the compression spring 2; then clamping the left top pressure plate 1 and the right top pressure plate 10 on the handheld section of the handle 103 through the U-shaped notch 11, and simultaneously clamping the traction plate on the handheld section of the handle 103; then, two hands are loosened, and under the elastic action force of the pressure spring 2, the left top pressure plate 1 and the right top pressure plate 10 are in guiding fit with the handheld section of the handle 103 through the U-shaped notch 11 to realize mutual separation until the opposite sides of the two top pressure plates are pressed on the bending section of the handle 103; because the specifications of the two compression springs 2 are the same, the drawplate is located in the middle of the two top pressure plates under the elastic action of the two compression springs 2, that is, the hook hole 12 on the drawplate is located in the middle of the handheld section of the handle 103. When the hook of the tension meter is hooked on the hook hole 12, the hand-held section of the handle 103 can be vertically pulled in the middle, so that the cover plate 102 rotates around the shell 101 and is opened, and the separation of the fusible core and the contact is realized; the force measured in the separation process of the fusible core and the contact can correctly reflect the clamping force at the contact of the fuse type disconnecting switch on the side surface, and reliable guarantee is provided for screening out the fuse type disconnecting switch meeting the requirements through tests.
It should be noted that two hook holes 12 are provided in the present embodiment, and correspondingly, two hooks may be provided on the dynamometer to hook the two hook holes 12; of course, a pin can be inserted into the two hook holes, only one hook is arranged on the dynamometer, and the pin is hooked by the hook to pull the traction plate and further pull the handle.
in embodiment 1, only one compression spring is arranged between the ear plate 3 and the corresponding top pressure plate, and the specifications of the two compression springs 2 are the same, so that the pulling plate is located at the middle position of the two top pressure plates under the elastic acting forces of the two compression springs 2.
in embodiment 1, the plate body is a U-shaped structure, and includes two parallel plate sections and a connecting plate section 7, the two parallel plate sections are provided with hook holes, the connecting plate section 7 is used for being in pushing fit with a handheld section of the handle 103, so as to drive the handle 103 to move together when the tension meter pulls the drawplate, wherein the connecting plate section 7 constitutes a handle pushing part; in this embodiment, the plate body is an L-shaped structure, and includes a vertical plate section and a horizontal plate section, the horizontal plate section is provided with a hook hole, and the vertical plate section is used for being in stop-and-match with the handle to drive the handle to move together when the tension meter pulls the pulling plate, wherein the vertical plate section constitutes a handle pushing portion.
in embodiment 1, the rotating fit part comprises an ear plate 3 and a rotating sleeve 4, the rotating sleeve 4 is fixedly arranged on one side of the ear plate 3, the pulling plate is rotatably assembled on the supporting shaft 5 through the ear plate 3 and the rotating sleeve 4, in the embodiment, the rotating fit part only comprises the ear plate, and the pulling plate is rotatably assembled on the supporting shaft through the ear plate.
in embodiment 1, all be equipped with U type breach 11 on left roof pressure board 1 and the right roof pressure board 10, two roof pressure boards pass through the handheld section direction cooperation of U type breach 11 with handle 103 to avoid left roof pressure board 1 and the skew handle 103 of the in-process that the right roof pressure board 10 kept away from each other, in this embodiment, all do not set up U type breach on left roof pressure board and the right roof pressure board, after two roof pressure boards and the equal joint of tractive board are in the handheld section of handle, put the hand again on the section of bending of handle until two roof pressure board tops pressure, in order to avoid left roof pressure board and the skew handle of the in-process that the right roof pressure board was keeping away from each other.
in embodiment 1, the supporting shaft 5 is threadedly connected with a limiting nut 6, the limiting nut 6 is used for limiting the pulling plate to prevent the pulling plate from being separated from the supporting shaft 5, wherein the limiting nut constitutes a limiting member, in this embodiment, the supporting shaft is provided with a threaded hole extending along a radial direction, a limiting screw is threadedly connected in the threaded hole, and the limiting screw is used for limiting the pulling plate to prevent the pulling plate from being separated from the supporting shaft, and wherein the limiting screw constitutes the limiting member.
In other embodiments, the limiting member may be a shoulder of the supporting shaft, and in order to facilitate replacement of the compression spring, the supporting shaft is screwed to the corresponding pressing plate, and the compression spring is replaced when the supporting shaft is unscrewed from the corresponding pressing plate.
in embodiment 1, the cross section of the optical axis segment of the supporting shaft 5 is circular, and the drawplate is not only slidably assembled on the two supporting shafts 5, but also rotatably assembled on the two supporting shafts 5 through the rotation fitting part, so as to be convenient for installing the drawplate on the handle 103.
in embodiment 1, the number of the supporting shafts 5 is two, the two supporting shafts are fixedly arranged at the opposite sides of the two top pressure plates at intervals, and the supporting shafts 5 provide guidance for corresponding pressure springs.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Fuse formula is experimental auxiliary device of contact clamp force for isolator, its characterized in that includes:
the two top pressure plates are arranged in parallel at intervals, and the opposite sides of the two top pressure plates are used for being in top pressure fit with the inner sides of the bending sections of the handles on the cover plate;
the traction plate is positioned between the two top pressure plates, the traction plate is provided with a hook hole and a handle pushing part, the hook hole is positioned in the middle of the top pressure plates and used for hooking a hook of the tension meter, and the handle pushing part is used for being matched with a handheld section of the handle in a pushing mode so as to drive the handle to move together when the tension meter pulls the traction plate;
and compression elastic parts are arranged between the traction plate and the two top pressure plates, the compression elastic parts apply elastic acting forces which are far away from each other to the traction plate and the corresponding top pressure plates, and the elastic acting forces applied to the two top pressure plates are the same, so that the traction plate is positioned in the middle of the two top pressure plates.
2. The auxiliary device for testing the clamping force of the contact for the fuse type disconnecting switch as recited in claim 1, wherein a compression type elastic member is arranged between the drawing plate and the two top pressing plates, and the specifications of the two compression type elastic members are the same.
3. The auxiliary device for testing the clamping force of the contact for the fuse type disconnecting switch as claimed in claim 2, wherein the two supporting shafts are respectively arranged on the opposite sides of the two top pressure plates, the two supporting shafts are coaxial and are arranged at intervals, and the pulling plate is slidably assembled on the two supporting shafts; the compression elastic piece is a compression spring which is sleeved on the corresponding support shaft, one end of the compression spring is pressed against the traction plate, and the other end of the compression spring is pressed against the corresponding pressing plate.
4. The auxiliary device for testing the clamping force of the contact for the fusible cut-off switch as claimed in claim 3, wherein the two support shafts are provided at opposite ends thereof with stoppers for stopping the pulling plate to prevent the pulling plate from slipping off the support shafts.
5. The auxiliary device for testing the clamping force of the contact for the fuse-type disconnecting switch according to claim 4, wherein the limiting member is a limiting nut, and the limiting nut is screwed on the corresponding supporting shaft.
6. A contact clamping force test auxiliary device for a fused disconnecting switch according to any one of claims 3 to 5, wherein the pulling plate is rotatably fitted on two support shafts.
7. A contact clamping force test auxiliary device for a fuse type disconnecting switch according to any one of claims 1 to 5, wherein the pulling plate comprises a plate body, the plate body is of a U-shaped structure and comprises two parallel plate sections and a connecting plate section, the hook holes are formed in the parallel plate sections, and the connecting plate section forms the handle pushing portion.
8. The auxiliary device for testing the clamping force of the contact for the fuse type disconnecting switch according to claim 7, wherein the opening of the plate body faces in the horizontal direction during the test, the two parallel plate sections are an upper parallel plate section and a lower parallel plate section respectively, and the upper parallel plate section is in a triangular structure.
9. A contact clamping force test aid for a fused disconnect switch as defined in claim 7 wherein said connecting plate segment is arcuate in cross-section.
10. The auxiliary device for testing the clamping force of the contact for the fuse-type disconnecting switch according to any one of claims 1 to 5, wherein the top pressure plate is provided with a U-shaped notch, and the top pressure plate is in guiding fit with the handheld section of the handle through the U-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801741.5A CN112097976B (en) | 2020-08-11 | 2020-08-11 | Fuse formula is experimental auxiliary device of contact clamp force for isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801741.5A CN112097976B (en) | 2020-08-11 | 2020-08-11 | Fuse formula is experimental auxiliary device of contact clamp force for isolator |
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| CN112097976A true CN112097976A (en) | 2020-12-18 |
| CN112097976B CN112097976B (en) | 2022-08-02 |
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| CN202010801741.5A Active CN112097976B (en) | 2020-08-11 | 2020-08-11 | Fuse formula is experimental auxiliary device of contact clamp force for isolator |
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| CN209804548U (en) * | 2019-06-25 | 2019-12-17 | 天津蓝拓自动化设备有限公司 | Pressure switch convenient to installation |
| CN209945884U (en) * | 2019-02-28 | 2020-01-14 | 山东广信工程试验检测集团有限公司 | RPC apron test detection device |
| CN210731669U (en) * | 2019-10-29 | 2020-06-12 | 苏州连政电子有限公司 | Spring type tool clamp for standard shaft machining |
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|---|---|---|---|---|
| JP2001235379A (en) * | 2000-02-25 | 2001-08-31 | Toshiba Tungaloy Co Ltd | Socket for measuring axial force incorporated with ultrasonic probe |
| CN103769899A (en) * | 2014-02-17 | 2014-05-07 | 陈敏蓉 | Automatic centering quick clamping device |
| CN106769433A (en) * | 2017-03-31 | 2017-05-31 | 沈阳盛远检测技术有限公司 | Composite bends and interlayer shear sample fast fixture |
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| CN210731669U (en) * | 2019-10-29 | 2020-06-12 | 苏州连政电子有限公司 | Spring type tool clamp for standard shaft machining |
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| Publication number | Publication date |
|---|---|
| CN112097976B (en) | 2022-08-02 |
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