CN219201118U - Fixing device for steel strand wires test fixture - Google Patents

Abstract

The application relates to a fixing device for a steel strand testing tool, which belongs to the field of steel strands and comprises a connecting component for fixing a steel strand body on the tool body, wherein a protecting component is covered outside the connecting component and is connected with the tool body; the protection component comprises a protection shell, a protection groove is formed in the protection shell, the connection component is arranged in the protection groove, and the protection shell is connected with the tool body. The protective housing provides the protection for coupling assembling and steel strand wires body for the junction of external liquid difficult corruption steel strand wires body and frock body and coupling assembling, so that follow-up operating personnel comparatively stably control the steel strand wires body and remove, thereby improved the accuracy that operating personnel detected steel strand wires body bulk strength.

Description

Fixing device for steel strand wires test fixture

Technical Field

The application relates to the field of steel strands, in particular to a fixing device for a steel strand test fixture.

Background

The steel strand is a steel product formed by twisting a plurality of steel wires, and a galvanized layer, a zinc-aluminum alloy layer, an aluminum-clad layer, a copper-clad layer, epoxy resin and the like can be added on the surface of the carbon steel according to requirements. Steel strands are commonly used for messenger wires, guys, reinforcement cores, etc.

In the related art, when the steel strand is applied to the connection between the photovoltaic panels on the photovoltaic support, an operator generally needs to place the steel strand on a test fixture for testing, so as to verify the structural strength of the steel strand. The test fixture mainly comprises a test frame and a jacking structure, an operator uses an anchor to fix two ends of a steel strand on two sides of the test frame respectively, a hoop is used to fix a photovoltaic panel and the steel strand, the output end of the jacking structure is connected with the steel strand, and the operator controls the jacking structure to drive the steel strand to float up and down so as to simulate the working state of the photovoltaic panel, so that the structural strength of the steel strand is detected.

For the related art, the inventor finds that two ends of the steel strand are connected with the test frame through the anchor, at this time, the connection part of the steel strand and the test frame is exposed to the outside, when the steel strand is in rainy weather, the rusting speed of the steel strand is easy to be accelerated, the possibility of loosening at the connection part of the steel strand and the test frame is caused, and therefore, the accuracy of the test of the overall strength of the steel strand is reduced, so that the improvement is needed.

Disclosure of Invention

In order to improve the accuracy of test steel strand wires bulk strength, this application provides a fixing device for steel strand wires test fixture.

The application provides a fixing device for steel strand wires test fixture adopts following technical scheme:

the fixing device for the steel strand testing tool comprises a connecting component used for fixing a steel strand body on the tool body, wherein a protecting component is covered outside the connecting component, and the protecting component is connected with the tool body;

the protection component comprises a protection shell, a protection groove is formed in the protection shell, the connection component is arranged in the protection groove, and the protection shell is connected with the tool body.

Through adopting above-mentioned technical scheme, operating personnel uses coupling assembling to fix the steel strand wires body on the frock body, establish the protection shell cover again on the coupling assembling who is equipped with the steel strand wires body for coupling assembling and steel strand wires body all are located the protection groove, and the protective housing provides the protection for coupling assembling and steel strand wires body this moment, makes coupling assembling connect steel strand wires body and frock body comparatively steadily, has reduced steel strand wires body rusty speed effectively, and it is convenient to provide the test of steel strand wires body for the operating personnel follow-up, thereby has improved the test accuracy of operating personnel test steel strand wires body's structural strength.

Preferably, a baffle is arranged in the protection groove, the baffle separates the protection groove into a protection space for protecting the connection part of the steel strand body and the connecting component and a filling space for supporting the steel strand body, the protection space is arranged on one side of the baffle, which is close to the tool body, a yielding hole for the steel strand body to pass through is formed in the baffle, and the steel strand body extends into the filling space.

Through adopting above-mentioned technical scheme, before operating personnel establishes the protective housing on coupling assembling and steel strand wires body, operating personnel paints the lubricating grease in the guard space, again fills filling space with the filler in, under the effect of lubricating grease for operating personnel is when testing the steel strand wires body, and coupling assembling is difficult for causing the damage to the steel strand wires body, and simultaneously filler and steel strand wires body contact and provide spacingly for the steel strand wires body, have improved the connection stability between steel strand wires body and the protective housing, thereby have further improved the precision that operating personnel measured steel strand wires body structural strength.

Preferably, the protective shell is provided with a filling hole communicated with the filling space.

Through adopting above-mentioned technical scheme, after operating personnel fixed protective housing and frock body mutually, operating personnel accessible filling hole fills the filler to the filling space in, under the effect of filling hole this moment, the operating personnel of being convenient for use the filler to provide spacingly for the steel strand wires body.

Preferably, the protective housing is connected with the frock body through fixed subassembly, fixed subassembly includes fixed disk and fixed column, the fixed disk sets up one side that the protective housing is close to the frock body and is connected with the frock body, one side looks butt that the frock body was kept away from to the protective housing and fixed disk, the fixed column passes protective housing and fixed disk and with protective housing and fixed disk threaded connection.

Through adopting above-mentioned technical scheme, when needs are fixed protective housing and frock body mutually, operating personnel is connected fixed disk and frock body earlier, again with the protection cap close on coupling assembling and steel strand wires body for protective housing and fixed disk looks butt, operating personnel passes protective housing and fixed disk with the fixed column again, make fixed column and protective housing and fixed disk threaded connection, accomplish the protective housing and be connected with frock body this moment, under the effect of fixed disk and fixed column, it is convenient to provide the fixed protective housing of operating personnel for the protective housing, so that the protective housing provides the protection to steel strand wires body and coupling assembling.

Preferably, an annular groove is formed in one side, close to the protective shell, of the fixed disc, a sealing ring is embedded in the annular groove, and one side, away from the fixed disc, of the sealing ring is abutted to the protective shell.

Through adopting above-mentioned technical scheme, after operating personnel is connected protective housing and fixed disk, the sealing ring offsets tightly with the protective housing, has improved the leakproofness between protective housing and the fixed disk, has reduced the possibility that external rainwater permeated from between the gap of protective housing and fixed disk, has further improved the connection stability between steel strand wires body and the frock body to the accuracy when operating personnel follow-up detection steel strand wires body bulk strength has further been improved.

Preferably, the coupling assembling includes spliced pole and two relatively set up connect the clamping piece, the spliced pole has seted up first connecting hole along self axis direction, one side that the protective housing was kept away from to the spliced pole and fixed disk looks butt, two relatively set up connect the clamping piece all set up in first connecting hole, two relatively set up connect the clamping piece laminating mutually and form the second connecting hole that is used for fixed steel strand wires body, two relatively set up one side that the clamping piece is relative all is equipped with a plurality of joint posts, each the joint post all sets up in the second connecting hole, each the joint post all with steel strand wires body looks butt.

Through adopting above-mentioned technical scheme, operating personnel passes first connecting hole with the steel strand wires body, in the first connecting hole is gone into to two connection clamping pieces card again, two connection clamping pieces and the inner wall of first connecting hole offset tightly this moment, two connection clamping pieces form the second connecting hole that is used for spacing steel strand wires body simultaneously, and each joint post all chucking mutually with the steel strand wires body, at this moment under the effect of spliced pole, two connection clamping pieces and each joint post, provide spacingly for the steel strand wires body is difficult for separating with the frock body, so that follow-up operating personnel detects the steel strand wires body.

Preferably, a wave spring is arranged between the connecting column and the fixed disc.

Through adopting above-mentioned technical scheme, wave spring provides further support for the spliced pole, has improved the connection stability between steel strand wires body and the frock body to further improved the precision that operating personnel detected steel strand wires body bulk strength.

Preferably, the protective housing is provided with a sealing assembly for sealing the filling hole, the sealing assembly comprises a sealing block and a fixing seat, the sealing block is connected to the protective housing in a sliding manner, the fixing seat is arranged on the protective housing, and the sealing block is connected with the fixing seat through a clamping assembly.

Through adopting above-mentioned technical scheme, after operating personnel pours the filler into the filling space, operating personnel removes the shutoff piece towards the direction of fixing base, and the reuse joint subassembly is fixed the shutoff piece mutually with the fixing base for the shutoff piece comparatively stably seals the filling hole under the effect of joint subassembly this moment, has reduced external liquid and has got into the protective housing through the filling hole, thereby has further improved the degree of accuracy that operating personnel detected the steel strand wires.

Preferably, the protective housing has offered the groove of stepping down along self length direction, the groove of stepping down is linked together with the filling hole, be equipped with on the closing piece with the sealing washer of filling hole looks adaptation, when the closing piece seals the filling hole, the sealing washer sets up in the filling hole and separation groove of stepping down and filling hole.

Through adopting above-mentioned technical scheme, after operating personnel fills filling to filling space with the filler, operating personnel removes the shutoff piece, and after the shutoff piece is fixed mutually with the fixing base, the sealing washer card is gone into in the shutoff hole, and the sealing washer seals the shutoff hole and the groove of stepping down this moment, has further improved the sealing performance in filling space, has further reduced the possibility that external liquid contacted with the steel strand wires body, has improved the accuracy when operating personnel follow-up detection steel strand wires body bulk strength effectively.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the protective shell, the joint of the steel strand body and the tool body is protected, the possibility of corrosion of the joint by external liquid is reduced, and the accuracy of detecting the integral strength of the steel strand body by an operator is improved;

2. by arranging the filling space, the filling agent in the filling space provides support and limit for the steel strand body, so that the possibility of separating the steel strand body from the tool body is reduced, and the accuracy of detecting the integral strength of the steel strand body by an operator is further improved;

3. through setting up seal assembly, seal assembly seals and fills the hole, has reduced the possibility of external liquid infiltration protective housing, further provides the protection for steel strand wires body and frock body junction to further improved the accuracy that operating personnel detected steel strand wires body bulk strength.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present application;

fig. 2 is a schematic structural diagram for embodying a positional relationship between a protection component and a tool body according to an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;

FIG. 4 is a schematic view of a structure for embodying the positional relationship between a seal ring and a stationary platen according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a second embodiment of the present application for embodying a positional relationship between a closing component and a protective case;

FIG. 6 is an enlarged schematic view of the portion B of FIG. 5;

fig. 7 is a schematic structural diagram of a second embodiment of the present application for embodying a positional relationship between a seal ring and a protective case;

fig. 8 is an enlarged schematic view of the portion C in fig. 7.

Reference numerals illustrate: 1. a steel strand body; 2. a tool body; 3. a connection assembly; 31. a connecting column; 311. a first connection hole; 32. connecting clamping pieces; 321. a second connection hole; 33. a clamping column; 4. a protection component; 41. a protective shell; 411. a protection groove; 42. a partition plate; 421. a relief hole; 43. a protective space; 44. filling the space; 45. filling the hole; 46. a relief groove; 5. a fixing assembly; 51. a fixed plate; 511. a ring groove; 512. a seal ring; 52. fixing the column; 6. a wave spring; 7. a closure assembly; 71. a closing block; 711. a seal ring; 72. a fixing seat; 721. a first clamping groove; 722. a fixed cavity; 723. a second clamping groove; 73. a spring; 8. a clamping assembly; 81. a first clamping rod; 82. a second clamping rod; 821. and a clamping hole.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

Embodiment one:

the embodiment of the application discloses a fixing device for steel strand wires test fixture. Referring to fig. 1 and 2, a fixing device for steel strand wires test fixture, including being used for fixing the coupling assembling 3 on the frock body 2 with steel strand wires body 1, coupling assembling 3 outside cover is equipped with protection component 4, and protection component 4 is fixed mutually with frock body 2. The protection component 4 comprises a protection shell 41, a protection slot 411 is formed in one side, close to the tool body 2, of the protection shell 41, the connection component 3 and the steel strand body 1 are arranged in the protection slot 411, and the protection shell 41 is fixed with the tool body 2 through a fixing component 5.

Referring to fig. 1 and 2, a partition plate 42 is fixed in the protection slot 411, the partition plate 42 divides the protection slot 411 into a protection space 43 for protecting the steel strand body 1 and the connection assembly 3 and a filling space 44 for supporting the steel strand body 1, wherein the protection space 43 is arranged on one side close to the tool body 2, the filling space 44 is arranged on one side, far away from the tool body 2, of the partition plate 42, and a yielding hole 421 for the steel strand body 1 to pass through is formed in the partition plate 42. The filling space 44 is filled with a filler, which in the present embodiment is provided as a foaming agent. In order to facilitate the operator to fill the filling space 44 with the filling agent, the protective case 41 is provided with a filling hole 45 communicating with the filling space 44.

The operator connecting assembly 3 is fixed with the steel strand body 1, and the connecting assembly 3 provides limit for the steel strand body 1 at the moment, so that the steel strand body 1 is not easy to separate from the tool body 2. The operating personnel cover the protective housing 41 on coupling assembling 3 and steel strand wires body 1 again, and coupling assembling 3 and steel strand wires body 1 are located protection space 43 this moment, and in the partial steel strand wires body 1 extended to filling space 44 simultaneously, the operating personnel filled filling agent from filling hole 45 into filling space 44 again, and the filling agent contacts with steel strand wires body 1 and provides support and spacing for steel strand wires body 1, has improved the connection stability between steel strand wires body 1 and the frock body 2. And protective housing 41 cooperatees with the filler for external liquid is difficult for causing the influence to the junction of steel strand wires body 1 and coupling assembling 3, thereby has further improved the connection stability between steel strand wires body 1 and the frock body 2, thereby has improved the degree of accuracy that operating personnel detected steel strand wires body 1.

Referring to fig. 2 and 3, the connection assembly 3 includes a connection column 31 and two connection clips 32 that are oppositely disposed, the connection column 31 is provided with a first connection hole 311 along its own axial direction, the two connection clips 32 are all disposed in the first connection hole 311, and the two connection clips 32 are abutted to form a second connection hole 321 for fixing the steel strand body 1, a plurality of clamping columns 33 are all fixed on the two connection clips 32, and each clamping column 33 is abutted to the steel strand body 1 and provides a limit for the steel strand body 1. The protective space 43 is oiled with grease, and under the action of the grease, each clamping post 33 is not easy to damage the steel strand body 1.

The fixing assembly 5 comprises a fixing disc 51 and a fixing column 52, the fixing disc 51 is fixed on one side, close to the tool body 2, of the protective shell 41 and is fixed with the tool body 2, the protective shell 41 is abutted against the fixing disc 51, the fixing column 52 penetrates through the protective shell 41 and then is inserted into the fixing disc 51, and the fixing column 52 is in threaded connection with the protective shell 41 and the fixing disc 51.

In order to improve the connection stability between the steel strand body 1 and the tool body 2, a wave spring 6 is fixed between the connecting column 31 and the fixed disc 51, and meanwhile, under the action of the wave spring 6, convenience is provided for subsequent operators to absorb impact force received by the steel strand body 1 when detecting the steel strand body 1.

When the steel strand body 1 and the tool body 2 are required to be fixed, an operator fixes the fixing disc 51 on the tool body 2, then places the wave spring 6 between the connecting column 31 and the fixing disc 51, the operator enables the steel strand body 1 to pass through the first connecting hole 311, the operator inserts the two connecting clamping pieces 32 into the first connecting hole 311 and tightly clamps the steel strand body 1 by the front clamping type jack, the steel strand body 1 is located in the second connecting hole 321, meanwhile, each clamping column 33 is tightly abutted against the steel strand body 1, the operator further uses the fixing column 52 to fix the protective shell 41 and the fixing disc 51, connection between the steel strand body 1 and the tool body 2 is completed, and convenience is provided for fixing the steel strand body 1 on the tool body 2 by the operator.

Referring to fig. 4, in order to further reduce the possibility of penetration of external liquid into the protective case 41, a ring groove 511 is formed in one side of the fixed disk 51 adjacent to the protective case 41, and a sealing ring 512 is embedded in the ring groove 511, and the sealing ring 512 abuts against the protective case 41. Under the effect of sealing ring 512, improve the sealing performance between protective housing 41 and the fixed disk 51 for external liquid is difficult for infiltration, has reduced the possibility that steel strand body 1 corrodes, thereby has further improved the degree of accuracy that the operating personnel detected steel strand body 1.

The implementation principle of the first embodiment of the application is as follows: the operating personnel uses coupling assembling 3 to be connected steel strand wires body 1 with frock body 2, the operating personnel reuses fixed subassembly 5 to fix protective housing 41 with frock body 2 mutually, protective housing 41 provides the protection for steel strand wires body 1 and coupling assembling 3, external liquid is difficult for contacting with steel strand wires body 1 and causes the corruption of steel strand wires body 1, simultaneously for the lubricating grease in protection space 43 makes coupling assembling 3 be difficult for causing the damage to steel strand wires body 1, the packing agent in the packing space 44 has further reduced the possibility in the external liquid infiltration protective housing 41, thereby the degree of accuracy when operating personnel detects steel strand wires body 1 has been improved.

Embodiment two:

referring to fig. 5 and 6, the first embodiment of the present application is different from the first embodiment in that: the protective housing 41 is provided with a sealing component 7 for sealing the filling hole 45, the sealing component 7 comprises a sealing block 71 and a fixing seat 72, the sealing block 71 is connected to the protective housing 41 in a sliding manner and is used for sealing the filling hole 45, the fixing seat 72 is fixed on the protective housing 41, and the fixing seat 72 is fixed with the fixing seat 72 through a clamping component 8.

The clamping assembly 8 comprises a first clamping rod 81 and a second clamping rod 82, wherein the first clamping rod 81 is fixed on one side of the sealing block 71 close to the fixing seat 72. The fixing base 72 is provided with a first clamping groove 721 along the vertical direction, the second clamping rod 82 is connected in the first clamping groove 721 in a sliding manner along the vertical direction, the fixing base 72 is provided with a fixing cavity 722 communicated with the first clamping groove 721, the fixing cavity 722 is provided with a spring 73, the spring 73 is sleeved on the second clamping rod 82, one end of the spring 73 is fixed with the second clamping rod 82, and the other end of the spring 73 is fixed with the inner wall of the fixing cavity 722. A second clamping groove 723 is formed in one side, close to the sealing block 71, of the fixing seat 72, the second clamping groove 723 is communicated with the first clamping groove 721, the second clamping rod 82 is inserted into the second clamping groove 723, a clamping hole 821 is formed in the second clamping rod 82, and when the second clamping rod 82 is inserted into the second clamping groove 723, the second clamping rod 82 is inserted into the clamping hole 821.

After the filling of the filler is completed by the operator, the operator moves the sealing block 71 towards the direction of the fixed seat 72, the sealing block 71 drives the first clamping connection rod 81 to move towards the fixed seat 72, when the first clamping connection rod 81 is inserted into the second clamping connection groove 723, the operator pulls the second clamping connection rod 82 towards the direction away from the fixed seat 72, the spring 73 is in a compressed state, when the first clamping connection rod 81 is abutted against the bottom of the second clamping connection groove 723, the operator releases the second clamping connection rod 82, at the moment, under the action of resilience force of the spring 73, the second clamping connection rod 82 faces the first clamping connection rod 81 and is inserted into the clamping connection hole 821, limiting of the first clamping connection rod 81 is completed, and meanwhile fixation between the sealing block 71 and the fixed seat 72 is completed. Under the effect of the closing block 71, the possibility that external liquid permeates into the protective shell 41 from the closing hole is reduced, so that the accuracy of the operator in the subsequent detection of the integral strength of the steel strand body 1 is improved.

Referring to fig. 7 and 8, in order to improve the sealing performance between the sealing block 71 and the sealing hole, a sealing ring 711 adapted to the filling hole 45 is fixed to a side of the sealing block 71 close to the protective case 41, and a relief groove 46 for storing the sealing ring 711 is formed in the protective case 41. The seal 711 is made of rubber. When the operator fills the filling space 44, the gasket 711 is positioned in the relief groove 46 and is in a compressed state. After filling, an operator moves the sealing block 71 towards the direction of the fixing seat 72, after the sealing block 71 is fixed with the fixing seat 72, the sealing ring 711 penetrates into the filling hole 45 and abuts against the inner wall of the filling hole 45, and meanwhile, the sealing ring 711 blocks the abdication groove 46 and the filling hole 45. At this time, under the action of the sealing ring 711, the possibility that the external liquid permeates into the protective housing 41 is further reduced, so that the accuracy of the operator in the subsequent detection of the steel strand body 1 is further improved.

The implementation principle of the second embodiment of the application is as follows: the operating personnel uses the seal assembly 7 to seal the filling hole 45 for external liquid is difficult to get into the protective housing 41 through filling hole 45, has further reduced the possibility that external liquid corrodes steel strand body 1, thereby has further improved the precision that operating personnel detected steel strand body 1 bulk strength.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. A fixing device for steel strand wires test fixture, its characterized in that: the steel strand assembly comprises a connecting component (3) for fixing a steel strand body (1) on a tool body (2), wherein a protecting component (4) is covered outside the connecting component (3), and the protecting component (4) is connected with the tool body (2);

the protection assembly (4) comprises a protection shell (41), a protection groove (411) is formed in the protection shell (41), the connecting assembly (3) is arranged in the protection groove (411), and the protection shell (41) is connected with the tool body (2).

2. The fixing device for a steel strand test fixture according to claim 1, wherein: be equipped with baffle (42) in protection slot (411), baffle (42) separate into protection space (43) that are used for protecting steel strand wires body (1) and coupling assembling (3) junction and are used for supporting filling space (44) of steel strand wires body (1), protection space (43) set up in baffle (42) are close to one side of frock body (2), offer hole (421) that give way that supply steel strand wires body (1) passed on baffle (42), steel strand wires body (1) extend to in filling space (44).

3. The fixing device for a steel strand testing fixture according to claim 2, wherein: and a filling hole (45) communicated with the filling space (44) is formed in the protective shell (41).

4. The fixing device for a steel strand test fixture according to claim 1, wherein: the utility model discloses a frock body, including frock body (2), protective housing (41), fixed subassembly (5) are connected with frock body (2) through fixed subassembly (5), fixed subassembly (5) are including fixed disk (51) and fixed column (52), fixed disk (51) set up one side that protective housing (41) are close to frock body (2) and are connected with frock body (2), one side looks butt that frock body (2) was kept away from to protective housing (41) and fixed disk (51), fixed column (52) pass protective housing (41) and fixed disk (51) and with protective housing (41) and fixed disk (51) threaded connection.

5. The fixing device for a steel strand testing fixture according to claim 4, wherein: an annular groove (511) is formed in one side, close to the protective shell (41), of the fixed disc (51), a sealing ring (512) is embedded in the annular groove (511), and one side, far away from the fixed disc (51), of the sealing ring (512) is abutted to the protective shell (41).

6. The fixing device for a steel strand testing fixture according to claim 4, wherein: the connecting assembly (3) comprises a connecting column (31) and two connecting clamping pieces (32) which are oppositely arranged, wherein a first connecting hole (311) is formed in the connecting column (31) along the axis direction of the connecting column, one side of the connecting column (31), which is far away from a protective shell (41), is abutted against a fixed disc (51), the two oppositely arranged connecting clamping pieces (32) are arranged in the first connecting hole (311), the two oppositely arranged connecting clamping pieces (32) are attached to each other and form a second connecting hole (321) for fixing a steel strand body (1), a plurality of clamping columns (33) are arranged on the opposite sides of the oppositely arranged connecting clamping pieces (32), and each clamping column (33) is arranged in the second connecting hole (321) and is abutted against the steel strand body (1).

7. The fixing device for a steel strand testing fixture according to claim 6, wherein: a wave spring (6) is arranged between the connecting column (31) and the fixed disc (51).

8. The fixing device for a steel strand testing fixture according to claim 7, wherein: be equipped with on protective housing (41) and be used for sealing closure assembly (7) of filling hole (45), closure assembly (7) are including closure block (71) and fixing base (72), closure block (71) sliding connection is on protective housing (41), fixing base (72) set up on protective housing (41), closure block (71) are connected with fixing base (72) through joint subassembly (8).

9. The fixing device for a steel strand testing fixture according to claim 8, wherein: the protective housing (41) has offered the groove of stepping down (46) along self length direction, step down groove (46) are linked together with filling hole (45), be equipped with on closing piece (71) with sealing washer (711) of filling hole (45) looks adaptation, when closing piece (71) seal filling hole (45), sealing washer (711) set up in filling hole (45) and separation step down groove (46) and filling hole (45).

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