CN210639001U

CN210639001U - Special clamp for tensile strength test of cable insulating layer special for nuclear power

Info

Publication number: CN210639001U
Application number: CN201920848954.6U
Authority: CN
Inventors: 李亮; 范瑾; 李世欣; 朱崤; 韩惠福; 李兵; 卢小磊; 陈文龙; 彭光亮; 王海萍; 邱正来; 丁新玉
Original assignee: Nuclear And Radiation Safety Center Ministry Of Ecology And Environment; SIAIT CABLE CO Ltd; China Nuclear Power Engineering Co Ltd
Current assignee: Nuclear And Radiation Safety Center Ministry Of Ecology And Environment; SIAIT CABLE CO Ltd; China Nuclear Power Engineering Co Ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-05-29
Anticipated expiration: 2029-06-05

Abstract

The utility model discloses a nuclear power private cable insulating layer draws and rises special fixture for strength test, the on-line screen storage device comprises a base, the inside top clearance fit of base has the bottom plate, the bottom rigid coupling of bottom plate has the rubber slab, the bottom of rubber slab offsets tightly with the inner wall bottom of base, the through-hole has been seted up to the bottom of base, the inside clearance fit of through-hole has the bolt. This special fixture for tensile strength test of nuclear power special cable insulating layer, the in-process that the anchor clamps that have solved tension test equipment among the prior art are using, when anchor clamps are maintained, change, the problem of not convenient to detach, prevent to lead to the fact owing to dismantle many times and connect not hard up problem, prevent to influence the normal use of anchor clamps, prevent that the clamping dynamics is too big or the undersize, guarantee the normal clear of tension test, and the work efficiency is improved, so this special fixture for tensile strength test of nuclear power special cable insulating layer can satisfy people's use needs completely.

Description

Special clamp for tensile strength test of cable insulating layer special for nuclear power

Technical Field

The utility model relates to a cable draws and rises intensity test technical field, specifically is a special fixture is used in test of nuclear power private cable insulating layer drawing intensity.

Background

The nuclear power station cable indicates the used raw materials of nuclear power station cable insulation and sheath, including plastics, multiple varieties such as rubber, in the in-process of cable manufacture, need carry out the tension test to the insulating layer, tension test equipment's among the prior art anchor clamps are at the in-process that uses, clamping cable insulating layer has been realized, but maintain at anchor clamps, when changing, the dismantlement of being not convenient for, and dismantle the problem that causes the connection to become flexible easily many times, influence the normal use of anchor clamps, and tight dynamics presss from both sides, the difficult control, it is too tight to appear the centre gripping easily, cause the clamping part to damage, and then influence the problem of tension test, so prior art can't satisfy people's use needs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special fixture is used to nuclear power private cable insulating layer pull-up strength test, in order to solve the in-process that the anchor clamps that propose tension test equipment among the above-mentioned background art are using, though realized pressing from both sides tight cable insulating layer, but maintain at anchor clamps, when changing, be not convenient for dismantle, and dismantle many times and cause the not hard up problem of connection easily, influence the normal use of anchor clamps, and press from both sides tight dynamics, be not convenient for control, it is too tight to appear the centre gripping easily, cause the clamping part to damage, and then influence the problem of tension test, so prior art can't satisfy the problem that people's use needs.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a special fixture for nuclear power private cable insulating layer tensile strength test, includes the base, the inside top clearance fit of base has the bottom plate, the bottom rigid coupling of bottom plate has the rubber slab, the bottom of rubber slab offsets tightly with the inner wall bottom of base, the through-hole has been seted up to the bottom of base, the inside clearance fit of through-hole has the bolt, perpendicular groove has been seted up at the top of bottom plate, the inside of erecting the groove is equipped with fixed establishment, the bottom plate passes through fixed establishment and is in the same place with the base is fixed, the top right side of bottom plate is rotated through first bearing and is connected with the round bar, the top of round bar is equipped with fixture, fixture's right side below is equipped with dynamometer, dynamometer's below is equipped with sliding component.

Preferably, fixed establishment includes lid, first spring, iron round pin and lug, the outer wall of lid links to each other with the inner wall screw thread that erects the groove, the bottom of lid and the top rigid coupling of first spring are in the same place, the bottom of first spring is in the same place with the top rigid coupling of lug, the left and right sides below of lug all is equipped with the iron round pin, the iron round pin passes through cross bore and bottom plate clearance fit, the end of iron round pin passes through draw-in groove and base clearance fit.

Preferably, the top of the cover body is 0.5-1 cm lower than the top of the bottom plate.

Preferably, fixture includes first support, first riser and second riser, the bottom of first support is in the same place with the top rigid coupling of round bar, the top of first support rotates with first riser through the round pin axle and links to each other, and first riser is located the left side of second riser, the equal rigid coupling in the right side of first riser and the left side of second riser has the rubber pad, the right side below rigid coupling of first riser has the curved bar.

Preferably, the dynamometer includes square bar, plectane and montant, the left end of square bar is in the same place with the right side rigid coupling of second riser, the outer wall right side and the montant clearance fit of square bar, the outer wall of square bar has cup jointed the second spring, both ends offset tightly with second riser and montant respectively about the second spring, the right-hand member of square bar is in the same place with the left side rigid coupling of plectane, the left side of plectane offsets tightly with the right side of montant, the scale has been seted up in the front of square bar.

Preferably, the sliding assembly includes second support, threaded rod and slider, the bottom of second support is in the same place with the top left side rigid coupling of curved bar, the top rigid coupling of second support has the second bearing, the inner wall rigid coupling threaded rod of second bearing, the threaded rod links to each other with the montant screw thread, the bottom of montant is in the same place with the top rigid coupling of slider, the slider is in the same place with curved bar slip joint, the left end rigid coupling of threaded rod has the round handle.

Compared with the prior art, the beneficial effects of the utility model are that: the special clamp for testing the tensile strength of the insulating layer of the nuclear power special cable is characterized in that through the matching among the lug, the first spring and the iron pin, the base plate can be quickly separated from the base without disassembling the base and external testing equipment for many times, thereby solving the problems that in the process of using the clamp of the tension testing equipment in the prior art, the problem of inconvenient disassembly when the clamp is maintained and replaced, the problem of loose connection caused by repeated disassembly is prevented, the normal use of the clamp is prevented from being influenced, and through the cooperation among the second spring, the vertical rod, the square rod and the scale, the clamping force on the external cable insulation layer can be conveniently and directly observed, the clamping force is prevented from being too large or too small, the normal operation of the tension test is ensured, the working efficiency is improved, therefore, the special clamp for testing the tensile strength of the insulating layer of the nuclear power special cable can completely meet the use requirements of people.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view showing a connection relationship between the bolts, the base plate and the rubber plate in FIG. 2;

fig. 4 is a schematic view of the connection relationship between the pin, the curved bar and the second riser in fig. 2.

In the figure: 1. the fixing mechanism comprises 101, a cover body, 102, a first spring, 103, a bump, 104, a clamping groove, 105, an iron pin, 106, a transverse hole, 2, a clamping mechanism, 201, a first support, 202, a pin shaft, 203, a first vertical plate, 204, a curved bar, 205, a rubber pad, 206, a second vertical plate, 3, a force measuring mechanism, 301, a square bar, 302, a circular plate, 303, a scale, 304, a second spring, 305, a vertical bar, 4, a sliding assembly, 401, a second support, 402, a second bearing, 403, a round handle, 404, a threaded rod, 405, a sliding block, 5, a bolt, 6, a bottom plate, 7, a rubber plate, 8, a vertical groove, 9, a first bearing, 10, a round bar, 11, a base, 12 and a through hole.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: a special clamp for tensile strength test of a nuclear power special cable insulating layer comprises a base 11, a bottom plate 6 is in clearance fit above the inside of the base 11, the base 11 can be fixed with external tensile force test equipment through a bolt 5, the base 11 plays a limiting role on the bottom plate 6, a rubber plate 7 is fixedly connected to the bottom of the bottom plate 6, the bottom of the rubber plate 7 is abutted against the bottom of the inner wall of the base 11, a through hole 12 is formed in the bottom of the base 11, the bolt 5 is in clearance fit inside the through hole 12, a vertical groove 8 is formed in the top of the bottom plate 6, a fixing mechanism 1 is arranged inside the vertical groove 8, the bottom plate 6 is fixed with the base 11 through the fixing mechanism 1, a round rod 10 is rotatably connected to the right side of the top of the bottom plate 6 through a first bearing 9, the round rod 10 is matched with the first bearing 9, so that the angle of a first support 201 can be changed, further meeting the test requirement, the top of the round bar 10 is provided with a clamping mechanism 2, a force measuring mechanism 3 is arranged below the right side of the clamping mechanism 2, a sliding component 4 is arranged below the force measuring mechanism 3, the fixing mechanism 1 comprises a cover body 101, a first spring 102, an iron pin 105 and a convex block 103, the outer wall of the cover body 101 is in threaded connection with the inner wall of the vertical groove 8, the bottom of the cover body 101 is fixedly connected with the top of the first spring 102, the first spring 102 gives downward elastic force to the convex block 103, the bottom of the first spring 102 is fixedly connected with the top of the convex block 103, iron pins 105 are arranged below the left side and the right side of the convex block 103, the convex block 103 gives outward movement force to the iron pin 105, so as to ensure that the iron pin 105 is in clearance fit with the clamping groove 104 and play a role in fixing the base 11 and the base plate 6, the iron pin 105 is in clearance fit with the base plate 6 through a transverse hole 106, the top of the cover body 101 is 0.5-1 cm lower than the top of the bottom plate 6, so as to prevent the cover body 101 from being touched by mistake, the clamping mechanism 2 comprises a first support 201, a first vertical plate 203 and a second vertical plate 206, the bottom of the first support 201 is fixedly connected with the top of the round rod 10, the upper part of the first support 201 is rotatably connected with the first vertical plate 203 through a pin shaft 202, the first vertical plate 203 is positioned at the left side of the second vertical plate 206, the right side of the first vertical plate 203 and the left side of the second vertical plate 206 are fixedly connected with a rubber pad 205, the rubber pad 205 can increase the friction between the inner sides of the first vertical plate 203 and the second vertical plate 206, a curved rod 204 is fixedly connected below the right side of the first vertical plate 203, the force measuring mechanism 3 comprises a square rod 301, a round plate 302 and a vertical rod 305, the left end of the square rod 301 is fixedly connected with the right side of the second vertical plate 206, the right side of the outer wall of the square rod 301, the second spring 304 provides elastic force for the second vertical plate 206 and the vertical rod 305 to be away from each other, the left end and the right end of the second spring 304 are respectively abutted against the second vertical plate 206 and the vertical rod 305, the right end of the square rod 301 is fixedly connected with the left side of the circular plate 302, the left side of the circular plate 302 is abutted against the right side of the vertical rod 305, the front surface of the square rod 301 is provided with a scale 303, the deformation amount of the second spring 304 can be visually displayed by comparing the scale 303 with the vertical rod 305, and further the force for clamping the cable insulation layer at the moment is judged, the sliding component 4 comprises a second support 401, a threaded rod 404 and a sliding block 405, the bottom of the second support 401 is fixedly connected with the left side of the top of the curved rod 204, the top of the second support 401 is fixedly connected with a second bearing 402, the second bearing 402 plays a supporting role on the threaded rod 404, the threaded rod 404 is fixedly connected with the, the bottom of the vertical rod 305 is fixedly connected with the top of the sliding block 405, the sliding block 405 can support the vertical rod 305, the sliding block 405 is connected with the curved rod 204 in a sliding and clamping mode, the left end of the threaded rod 404 is fixedly connected with the round handle 403, and a user can conveniently rotate the threaded rod 404 through the round handle 403.

When the special clamp for testing the tensile strength of the insulating layer of the nuclear power special cable is used, firstly, the bottom of a base 11 is aligned with the mounting position of a clamp for testing the external tension, the base 11 is fixed through a bolt 5, then a bottom plate 6 is inserted into the base 11, at the moment, the inner sides of two iron pins 105 are attached together, the tail ends of the two iron pins 105 are flush with the outer side of the bottom plate 6, then a lug 103 is placed into a vertical groove 8, a cover body 101 is in threaded connection with the vertical groove 8, further, downward force is given to the lug 103 through a first spring 102, the lug 103 gives a mutual distant force to the two iron pins 105 through the matching with the inner side inclined plane of the iron pin 105, further, the tail ends of the iron pins 105 are in clearance fit with a clamping groove 104, the base 11 and the bottom plate 6 are fixed, when the external insulating layer of the cable needs to be clamped, the external insulating layer of the cable is placed between a first vertical plate 201, rotate round handle 403, round handle 403 drives threaded rod 404 and rotates, threaded rod 404 can drive montant 305 and move left through the threaded connection with montant 305, montant 305 drives slider 405 along curved bar 204 and move left when moving left, after rubber pad 205 inboard first riser 201 and second riser 206 cliies external cable insulation layer, second spring 304 is compressed along with montant 305 continuation motion, the volume that second spring 304 compressed can read through the cooperation between scale 303 and the montant 305, the power that second spring 304 received by the compression, be promptly this moment first riser 201 and second riser 206 to the clamping dynamics of external cable insulation layer, when the clamping dynamics suits, stop rotating round handle 403 can.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a special fixture for test of nuclear power private cable insulating layer tensile strength, includes base (11), its characterized in that: a bottom plate (6) is in clearance fit with the upper part inside the base (11), a rubber plate (7) is fixedly connected with the bottom of the bottom plate (6), the bottom of the rubber plate (7) is tightly propped against the bottom of the inner wall of the base (11), the bottom of the base (11) is provided with a through hole (12), a bolt (5) is in clearance fit in the through hole (12), a vertical groove (8) is formed in the top of the bottom plate (6), a fixing mechanism (1) is arranged in the vertical groove (8), the bottom plate (6) is fixed with the base (11) through the fixing mechanism (1), the right side of the top of the bottom plate (6) is rotatably connected with a round rod (10) through a first bearing (9), the top of round bar (10) is equipped with fixture (2), the right side below of fixture (2) is equipped with dynamometer (3), the below of dynamometer (3) is equipped with sliding component (4).

2. The special clamp for the tensile strength test of the insulating layer of the nuclear power special cable according to claim 1, which is characterized in that: fixed establishment (1) is including lid (101), first spring (102), iron round pin (105) and lug (103), the outer wall of lid (101) links to each other with the inner wall screw thread of erecting groove (8), the bottom of lid (101) and the top rigid coupling of first spring (102) are in the same place, the bottom of first spring (102) is in the same place with the top rigid coupling of lug (103), the left and right sides below of lug (103) all is equipped with iron round pin (105), iron round pin (105) are through cross bore (106) and bottom plate (6) clearance fit, draw-in groove (104) and base (11) clearance fit are passed through to the end of iron round pin (105).

3. The special clamp for the tensile strength test of the insulating layer of the nuclear power special cable according to claim 2, which is characterized in that: the top of the cover body (101) is 0.5-1 cm lower than the top of the bottom plate (6).

4. The special clamp for the tensile strength test of the insulating layer of the nuclear power special cable according to claim 1, which is characterized in that: fixture (2) include first support (201), first riser (203) and second riser (206), the bottom of first support (201) is in the same place with the top rigid coupling of round bar (10), the top of first support (201) is passed through round pin axle (202) and is rotated with first riser (203) and link to each other, and first riser (203) are located the left side of second riser (206), the equal rigid coupling in left side of the right side of first riser (203) and the left side of second riser (206) has rubber pad (205), the right side below rigid coupling of first riser (203) has curved bar (204).

5. The special clamp for the tensile strength test of the insulating layer of the nuclear power special cable according to claim 1, which is characterized in that: the force measuring mechanism (3) comprises a square rod (301), a circular plate (302) and a vertical rod (305), the left end of the square rod (301) is fixedly connected with the right side of a second vertical plate (206), the right side of the outer wall of the square rod (301) is in clearance fit with the vertical rod (305), a second spring (304) is sleeved on the outer wall of the square rod (301), the left end and the right end of the second spring (304) are respectively tightly abutted to the second vertical plate (206) and the vertical rod (305), the right end of the square rod (301) is fixedly connected with the left side of the circular plate (302), the left side of the circular plate (302) is tightly abutted to the right side of the vertical rod (305), and the front of the square rod (301) is provided with scales (303).

6. The special clamp for the tensile strength test of the insulating layer of the nuclear power special cable according to claim 1, which is characterized in that: slide subassembly (4) include second support (401), threaded rod (404) and slider (405), the bottom of second support (401) is in the same place with the top left side rigid coupling of curved bar (204), the top rigid coupling of second support (401) has second bearing (402), the inner wall rigid coupling of second bearing (402) has threaded rod (404), threaded rod (404) and montant (305) threaded connection, the bottom of montant (305) and the top rigid coupling of slider (405) are in the same place, slider (405) and curved bar (204) slip joint are in the same place, the left end rigid coupling of threaded rod (404) has round handle (403).