CN215494285U - Tensile machine for adjusting tensioning of sensing optical cable - Google Patents

Abstract

The utility model discloses a tension machine for adjusting tension of a sensing optical cable, which relates to the technical field of mounting of the sensing optical cable and comprises a rack, wherein a tension meter, a tension wheel and a plurality of winding wheels are mounted on the rack; and the rack is also provided with a linear driving structure for driving the tensioning wheel to move. The utility model can flexibly apply prestress to the sensing optical cable and ensure that the prestress values applied along the sensing optical cable are kept consistent.

Description

Tensile machine for adjusting tensioning of sensing optical cable

Technical Field

The utility model relates to the technical field of installation of sensing optical cables, in particular to a tensile machine for adjusting tensioning of the sensing optical cables.

Background

Due to the particularity of the underground tunnel, the underground tunnel is influenced by various factors such as geology, terrain, weather conditions and the like in the construction and operation processes, so that in order to ensure the safe use of engineering facilities, the safety monitoring of the tunnel structure in operation is necessary to ensure the safety of the main structure. The existing tunnel structure health monitoring technology has the following defects: (1) all the points are arranged in a point mode, the point arrangement is always random, and the most dangerous places are always missed to be detected; (2) the survival rate is low, and the rock soil is easily damaged by the environment and loses effectiveness in some severe rock soil environments; (3) real-time, parallel and automated monitoring degrees are not high; (4) long distance and large area monitoring techniques are lacking. Different from the principle of the conventional monitoring technology, the optical fiber sensing technology has the characteristics of distribution, long distance, real-time property, high precision, long durability and the like, and is widely applied to underground engineering monitoring.

The existing optical fiber layout on a tunnel structure is divided into two modes, namely a comprehensive layout mode and a fixed-point layout mode. The overall arrangement method needs to completely stick the whole optical fiber to the surface of the structure or implant the optical fiber into the structure for sealing, and has the advantages of simple arrangement, good safety, reflecting the change of each point of the structure, but being easy to damage the optical fiber under the stretching action of cracks; the fixed-point laying method is characterized in that the optical fiber is stretched according to a certain distance and fixed on the structure point by point, and the fixed-point laying method is used for measuring the average strain change among all fixed points, is simple and convenient in construction mode, and cannot cause the optical fiber to break due to local violent change. Therefore, the fixed point arrangement is more suitable for monitoring the average strain change of the structure within a certain gauge length range, monitoring the width change of the structure crack and the like.

Generally, if the fiber routing is not pre-tensioned, the fiber segment between the two fixing points is in a relaxed state; when the structure is deformed, the optical fiber may be in a state of being relaxed without stress change even though the optical fiber is stretched along with the deformation of the structure, and thus the optical fiber strain instrument may not normally capture the strain value of the structure or capture an incomplete strain value. Therefore, in order to better sense the deformation of the tunnel structure, the optical fiber needs to be pre-stretched, so that when the structure is not deformed, the tensile stress is already in the optical fiber, and therefore when the structure is deformed, the monitoring optical fiber can completely sense the change condition of the structure.

At present, when a fixed-point optical fiber sensing technology is used for monitoring a long-distance tunnel, how to efficiently and conveniently install a sensing optical cable on the side wall of the tunnel, particularly how to apply uniform and consistent prestress (pretension) to the whole edge line of the sensing optical cable is a difficult problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tension machine for adjusting the tension of a sensing optical cable, which can flexibly apply prestress to the sensing optical cable and ensure that the prestress values applied along the sensing optical cable are kept consistent.

In order to realize the purpose of the utility model, the technical scheme is as follows: a tension machine for adjusting tension of a sensing optical cable comprises a machine frame, wherein a tension meter, a tension wheel and a plurality of winding wheels are arranged on the machine frame, a pull rope is wound on the tension wheel and the winding wheels together, and one end of the pull rope is fixed with the tension meter; and the rack is also provided with a linear driving structure for driving the tensioning wheel to move.

Further, the linear driving structure comprises a sliding groove located on the rack, a lead screw and a sliding block are installed in the sliding groove, the sliding block is arranged in a sliding mode relative to the sliding groove, the sliding block is in threaded fit with the lead screw, and the tensioning wheel is installed on the sliding block.

Furthermore, an installation seat is further installed on the sliding block, and the tensioning wheel is installed on the installation seat.

Furthermore, a guide shaft is further installed at the bottom of the sliding groove, and the sliding block is in sliding fit with the guide shaft.

Furthermore, the one end of lead screw runs through the frame and outwards extends, and the hand wheel is installed to the extension end of lead screw.

Furthermore, the frame is also provided with a wire leading-out wheel and an adjusting mechanism for adjusting the wire leading-out wheel to move up and down, and the leading-out end of the pull rope is wound on the wire leading-out wheel.

Furthermore, the number of the wire leading-out wheels is two, and the two wire leading-out wheels are respectively positioned at the upper end and the lower end of the rack.

Furthermore, the adjusting mechanism comprises a U-shaped base which vertically extends on the rack, a movable seat which can move relatively and a locking structure which locks the movable seat are arranged on the U-shaped base, and the wire leading-out wheel is arranged on the movable seat.

Furthermore, two sides of the U-shaped base are provided with edge platforms which are turned inwards, and two sides of the movable base are slidably clamped below the edge platforms.

Furthermore, the locking structure comprises a sleeve arranged on the movable seat and a pull rod capable of sliding up and down in the sleeve, a rack is further arranged in the U-shaped base, a detachable clamping piece is clamped on the rack, the lower end of the pull rod is fixed with the clamping piece, and a telescopic spring is further supported between the clamping piece and the top of the movable seat.

Furthermore, the telescopic spring is sleeved on the pull rod, and a handle is further arranged at the upper end of the pull rod.

Further, an optical cable clamp is further installed at the leading-out end of the pull rope.

Further, the optical cable clamp comprises an upper clamp plate and a lower clamp plate, the pull rope is fixed with the upper clamp plate or/and the lower clamp plate, a mounting groove matched with the cable is formed in the opposite surface of the upper clamp plate or the lower clamp plate, and the upper clamp plate and the lower clamp plate are fixed through locking of the screw.

Furthermore, the two ends of the mounting groove are horn-shaped.

Furthermore, wheels are further installed at the bottom of the frame.

The utility model has the beneficial effects that:

1. when the tension meter is used, the leading-out end of the pull rope is fixed with the sensing optical cable, then the tensioning wheel is driven by the linear driving structure, so that the pull rope pulls the sensing optical cable to be tensioned, in the whole process, the tension meter monitors the tension degree of the pull rope in real time, and when the tension degree monitored by the tension meter reaches a fixed value, the sensing optical cable is fixed on a base body to be monitored by the aid of the wire clamp, and the mounting process of the sensing optical cable is more efficient and convenient. The utility model can strain the sensing optical cable in the installation process of the sensing optical cable, so that the prestress on the whole sensing optical cable is uniform and consistent after the sensing optical cable is installed, thereby accurately monitoring the change of the structural crack width and the like.

2. The wire leading-out wheel is arranged on the rack, and the adjusting mechanism is adopted to adjust the wire leading-out wheel, so that the utility model can strain the photosensitive cable at any installation height, and the utility model has wider application range.

3. Through the end installation optical cable anchor clamps of drawing forth at the stay cord, it is more convenient not only to make being connected of stay cord and sensing optical cable, and makes being connected of stay cord and sensing optical cable more firm, guarantees the taut effect of sensing optical cable, avoids the stay cord to lead to the fact the damage to the sensing optical cable when taut to the sensing optical cable.

4. The wheels are arranged at the bottom of the frame, so that the utility model is more convenient to carry and use in the use process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a block diagram of a tensile machine for adjusting the tension of a sensing cable provided by the present invention;

FIG. 2 is a block diagram of a linear drive configuration;

FIG. 3 is a block diagram of an adjustment mechanism;

FIG. 4 is a cross-sectional view of an adjustment mechanism;

fig. 5 is a structural view of the cable clamp.

Reference numbers and corresponding part names in the drawings:

1. the device comprises a frame, 2, a tension meter, 3, a tension wheel, 4, a reel, 5, a linear driving structure, 6, a wire leading-out wheel, 7, an adjusting mechanism, 8, a pull rope, 9, an optical cable clamp, 10 and wheels;

51. the device comprises a sliding chute 52, a lead screw 53, a sliding block 54, a mounting seat 55, a guide shaft 56 and a hand wheel;

71. u-shaped base 72, edge platform 73, sleeve 74, pull rod 75, rack 76, fastener 77, extension spring 78, handle 79 and moving seat;

91. an upper clamping plate 92, a lower clamping plate 93 and a mounting groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the tensile machine for adjusting the tension of a sensing optical cable according to the present invention includes a frame 1, wherein the frame 1 is a box structure or a frame structure, a tension meter 2, a tension wheel 3 and a plurality of reels 4 are mounted on the frame 1, the tension meter 2 is fixedly mounted on the frame 1, the tension meter 2 can directly adopt a portable electronic scale, the plurality of reels 4 are fixedly mounted on the frame 1, the frame 1 is further mounted with a linear driving structure 5 for driving the tension wheel 3 to move on the frame 1, and the relative position of the tension wheel 3 on the frame 1 is changed by the driving of the linear driving structure 5, so that the distance between the tension wheel 3 and two adjacent reels 4 is changed; one end of the pull rope 8 is fixed with the tension meter 2, the leading-out end of the pull rope 8 is connected with the sensing optical cable to be tensioned, and the leading-out end of the pull rope 8 is the end of the pull rope 8 connected with the sensing optical cable.

When the sensing optical cable needs to be installed, the installation position of one end of the sensing optical cable can be fixed, then the optical cable monitoring device is carried to a fixed position, the leading-out end of the pull rope 8 is fixedly connected with the other end of the sensing optical cable, the tensioning wheel 3 is driven to move on the rack 1 through the linear driving structure 5, the tensioning wheel 3 is enabled to be gradually far away from two adjacent winding wheels 4, the tensioning wheel 3 drives the pull rope 8 to be gradually drawn close while moving, the pull rope 8 drives the sensing optical cable to be tensioned while tensioning, the tension meter 2 detects the tension of the pull rope 8 in real time during tensioning, when the tension of the pull rope 8 reaches a fixed value, the linear driving structure 5 stops driving the tensioning wheel 3, and at the moment, the sensing optical cable is fixed on a base body to be monitored through the sensing optical cable fixing clamp.

In some embodiments, as shown in fig. 2, the linear driving structure 5 includes a sliding groove 51 located on the frame 1, the sliding groove 51 is in a reverse t shape, that is, the width of the bottom of the sliding groove 51 is greater than the width of the opening of the sliding groove 51, and both ends of the sliding groove 51 do not penetrate through the frame 1, or one end of the sliding groove 51 does not penetrate through the frame 1, and one end of the sliding groove 51 penetrating through the frame 1 is closed by a sealing plate; a lead screw 52 and a slide block 53 are installed in the slide groove 51, the slide block 53 is in sliding fit with the slide groove 51, the axial direction of the lead screw 52 is consistent with the axial direction of the slide groove 51, the slide block 53 can be inverted T-shaped or rectangular, when the slide block 53 is inverted T-shaped, the shape and the width of the slide block 53 are matched with the shape and the width of the slide groove 51, when the slide block 53 is rectangular, the height of the slide block 53 is matched with the depth of the bottom of the slide groove 51, the width of the slide block 53 is matched with the width of the bottom of the slide groove 51, and the slide block 53 is effectively prevented from being separated from the slide groove 51 when sliding in the slide groove 51; the screw 52 and the slider 53 are in threaded fit, that is, the slider 53 has a threaded hole which is matched with the screw 52, the thread of the threaded hole is engaged with the thread on the screw 52, and the tension pulley 3 is mounted on the slider 53, when the screw 52 rotates, because the slider 53 cannot rotate in the slide slot 51, at this time, the slider 53 does linear motion along the slide slot 51, so that the tension pulley 3 mounted on the slider 53 moves synchronously, and the tension pulley 3 generates relative displacement.

In some embodiments, the sliding block 53 is further provided with an installation seat 54, the installation seat 54 may be L-shaped, U-shaped, or Z-shaped, when the installation seat 54 is L-shaped, a vertical portion of the installation seat 54 may be fixed on a side wall of the sliding block 53 by a screw or directly welded to the sliding block 53, the tensioning wheel 3 is installed on a horizontal portion of the installation seat 54, when the installation seat 54 is U-shaped or Z-shaped, one end of the installation seat 54 is fixed on a top surface of the sliding block 53, and the tensioning wheel 3 is installed at the other end of the installation seat 54. Mainly to make the installation of the tension pulley 3 more convenient.

In some embodiments, two guide shafts 55 are further installed at the bottom of the sliding groove 51, two guide shafts 55 may be provided, when two guide shafts 55 are provided, the two guide shafts 55 respectively displace two sides of the lead screw 52, and two shaft sleeves which are respectively in sliding fit with the guide shafts 55 may also be installed on the slider 53, the guide shafts 55 are slidably inserted into the shaft sleeves, so that the slider 53 is in sliding fit with the guide shafts 55, when the lead screw 52 drives the slider 53 to slide along the sliding groove 51, two sides of the slider 53 may be guided by the guide shafts 55, so that the sliding of the slider 53 is more stable, thereby greatly reducing the shaking of the slider 53, effectively avoiding the shaking of the tension pulley 3 during the displacement process of the tension pulley 3, and further making the tension pulley 3 more stable during the tension process of the tension rope 8. The way of engaging the guide shaft 55 with the sleeve can be replaced by installing a slide rail in the slide groove 51 and opening a slide groove on the slide block to engage with the slide rail.

In some embodiments, one end of the lead screw 52 extends outwards through the rack 1, and a hand wheel 56 is mounted at the extending end of the lead screw 52, so that when the lead screw is used, a person can drive the lead screw 52 to rotate through the hand wheel 56, and the lead screw 52 can be rotated more conveniently. Here, a driving motor can be used to replace the hand wheel 56, at this time, the driving motor can be fixedly mounted on the frame 1, and the output shaft of the driving motor is connected with the lead screw 52 through a coupling; meanwhile, a controller can be configured to connect the driving motor with the output end of the controller, the tension meter 2 is connected with the input end of the controller, at the moment, the driving motor can automatically drive the lead screw 52 to rotate, so that the sliding block 53 is driven to slide, the tension wheel 3 is enabled to generate displacement, the pull rope 8 is enabled to be tensioned, the tension meter 2 monitors the tension force in real time and feeds the tension force back to the controller in real time in the tensioning process of the pull rope 8, and when the controller monitors that the tension force of the tension meter 2 reaches a preset value, the controller controls the driving motor to stop acting, so that automatic tensioning is achieved, and the tensioning of the sensing optical cable is enabled to be more convenient.

In some embodiments, the rack 1 is further provided with a wire leading-out wheel 6, the leading-out end of the pulling rope 8 is wound on the wire leading-out wheel 6, that is, the wire leading-out wheel 6 is mainly used for guiding the leading-out end of the pulling rope 8, the rack 1 is further provided with an adjusting mechanism 7 for adjusting the wire leading-out wheel 6 to move up and down, the position of the wire leading-out wheel 6 in the height direction is changed through adjustment of the adjusting mechanism 7, so that the height of the leading-out end of the pulling rope 8 is adjusted, when the pulling rope 8 is used for different installation heights, the leading-out end of the pulling rope 8 and the sensing optical cable are kept at the same horizontal height in the process of pulling the sensing optical cable through adjustment of the leading-out end of the pulling rope 8, so that when the pulling rope 8 is used for tensioning the sensing optical cable, the height of the sensing optical cable in the tensioned state is the installation height of the sensing optical cable, so that the sensing optical cable can be directly fixed on a substrate to be monitored by using a wire clamp when being installed, the installation of the sensing optical cable is more convenient, the height of the sensing optical cable does not need to be additionally adjusted, the sensing optical cable is tensioned under the condition of different installation heights, and the application range of the optical cable tensioning device is wider.

In some embodiments, two outgoing line wheels 6 are provided, the two outgoing line wheels 6 are respectively located at the upper end and the lower end of the rack 1, and the outgoing end of the pull rope 8 is wound on the corresponding outgoing line wheel 6 according to the requirements of different installation heights of the sensing optical cable; meanwhile, when the tensioning wheel 3 cannot tension the sensing optical cable in the process of tensioning the sensing optical cable, at the moment, one of the outgoing line wheels 6 can be used as the winding wheel 4, so that the pull rope 8 is wound on the two outgoing line wheels 6 at the same time. When the sensing optical cable with a lower installation position needs to be tensioned, the leading-out end of the pull rope 8 is directly wound on the leading-out wheel 6 positioned at the lower end of the rack 1, and the height of the leading-out wheel 6 is adjusted, so that the tensioning of the sensing optical cable with a lower installation position is met; when the sensing optical cable with a higher mounting position needs to be tensioned, the leading-out end of the pull rope 8 is directly wound on the leading-out wire wheel 6 positioned at the upper end of the rack 1, and the height of the leading-out wire wheel 6 is adjusted, so that the requirement of tensioning the sensing optical cable with a higher mounting position is met. Through the cooperation of two wire leading-out wheels 6, the regulation that makes 8 leading-out ends of stay cord is more convenient, makes the installation effectiveness of sensing optical cable higher.

In some embodiments, as shown in fig. 3 and 4, the adjusting mechanism 7 includes a U-shaped base 71 installed on the frame 1, an axial direction of the U-shaped base 71 is aligned with a height direction of the frame 1, a moving base 79 capable of moving up and down is installed on the U-shaped base 71, the wire leading wheel 6 is installed on the U-shaped base 71, and a locking structure for locking and fixing the moving base 79 and the U-shaped base 71 is further installed on the moving base 79. When the installation height of the wire leading-out wheel 6 needs to be adjusted, the locking structure loses the locking of the movable seat 79 and the U-shaped base 71, the movable seat 79 is adjusted to move on the U-shaped base 71, so that the height of the wire leading-out wheel 6 installed on the movable seat 79 is adjusted, when the height of the wire leading-out wheel 6 reaches the installation height of the sensing optical cable, the movable seat 79 and the U-shaped base 71 are locked and fixed through the locking structure, the installation height of the wire leading-out wheel 6 is fixed, the leading-out end of the pull rope 8 is wound on the wire leading-out wheel 6, and the height of the sensing optical cable is the installation height of the sensing optical cable after the pull rope 8 tensions the sensing optical cable.

In some embodiments, the U-shaped base 71 is a channel steel structure, and two sides of the U-shaped base 71 are provided with inward-turned edge tables 72, so that a inverted t-shaped through slot is formed in the U-shaped base 71, after the movable seat 79 is installed in the U-shaped base 71, two sides of the movable seat 79 are respectively limited by the two edge tables 72, so that when the movable seat 79 needs to be adjusted, the movable seat 79 can move in the U-shaped base 71, but the movable seat 79 does not fall off from the U-shaped base 71 in the moving process, and the stability of the movable seat 79 in the moving process is ensured; in order to prevent the movable base 79 from being removed from both ends of the U-shaped base 71 during the movement of the U-shaped base 71, sealing plates may be installed at both ends of the U-shaped base 71. Here, the U-shaped base 71 can also be replaced by a groove that is directly inverted t-shaped formed on the frame 1, at this time, the movable seat 79 is installed in the groove, and the locking structure locks and fixes the movable seat 79 and the frame 1; or, a U-shaped groove may be directly formed on the frame 1, and the U-shaped base 71 may be installed in the groove. In order to make the installation of the wire leading-out wheel 6 more convenient, a support is further installed on the movable seat 79, the support can be U-shaped or Z-shaped, the other end of the support is fixed on the top surface of the movable seat 79, and the wire leading-out wheel 6 is installed at the other end of the support.

In some embodiments, the locking structure includes a sleeve 73 mounted on the movable base 79, a pull rod 74 is inserted into the sleeve 73, the lower end of the pull rod 74 extends toward the bottom of the U-shaped base 71, and the pull rod 74 is slidable up and down in the sleeve 73, so that the pull rod 74 and the sleeve 73 can be triangular or polygonal to avoid rotation when the pull rod 74 slides up and down in the sleeve 73; meanwhile, a rack 75 is further installed in the U-shaped base 71, tooth grooves of the rack 75 are U-shaped, the rack 75 extends in the length direction of the U-shaped base 71, a detachable clamping piece 76 is further clamped on the rack 75, the clamping piece 76 is located below the moving base 79, concretely, the clamping piece 76 is n-shaped, two ends of the clamping piece 76 are respectively clamped in the two tooth grooves, and the clamping piece 76 cannot move up and down in the U-shaped base 71. The lower end of the pull rod 74 is fixed with the clamping piece 76, so that when the pull rod 74 moves up and down in the sleeve 73, the pull rod 74 can synchronously drive the clamping piece 76 to move up and down, the two ends of the clamping piece 76 leave the tooth grooves on the rack 75 or are clamped in the tooth grooves on the rack 75, and the clamping piece 76 and the rack 75 are clamped or loosened. An extension spring 77 is further arranged between the clamping piece 76 and the top of the moving seat 79 in a propping manner, namely one end of the extension spring 77 is tightly propped against the clamping piece 76, and the other end of the extension spring 77 is tightly propped against the top of the moving seat 79, so that the clamping piece 76 and the moving seat 79 are locked through the elastic force of the extension spring 77, the moving seat 79 cannot move in the U-shaped base 71 under the condition of not receiving external force, the clamping piece 76 cannot move on the rack 75, and the position of the wire leading-out wheel 6 is locked and fixed after being adjusted. Here, the rack 75 can also be directly eliminated, and a plurality of tooth sockets are directly formed on the U-shaped base 71, at this time, the tooth sockets are uniformly arranged at intervals along the length direction of the U-shaped base 71, and both ends of the clamping piece 76 can still be clamped in the tooth sockets; when the U-shaped base 71 is replaced by the inverted t-shaped mounting groove 93 formed on the frame 1, the tooth grooves may also be directly formed at the bottom of the mounting groove 93.

When the position of the wire leading-out wheel 6 needs to be adjusted, the pull rod 74 is manually lifted, the clamping piece 76 is driven to be lifted while the pull rod 74 is lifted, at the moment, the telescopic spring 77 is compressed by external force, the clamping piece 76 loses the clamping with the rack 75, the movable seat 79 and the clamping piece 76 are manually driven by the pull rod 74 to slide in the U-shaped base 71, so that the wire leading-out wheel 6 mounted on the movable seat 79 moves synchronously, when the wire leading-out wheel 6 moves to the corresponding position, the tension on the pull rod 74 is lost, the telescopic spring 77 pushes the clamping piece 76 to move towards the rack 75 through the elasticity of the telescopic spring 77, the clamping piece 76 drives the pull rod 74 to move while moving, two ends of the clamping piece 76 are respectively clamped in corresponding tooth grooves on the rack 75, and the clamping piece 76 and the rack 75 are clamped again.

In some embodiments, the extension spring 77 is sleeved on the pull rod 74, so that the position of the extension spring 77 is limited, thereby not only preventing the extension spring 77 from deforming, but also ensuring that the spring of the extension spring 77 always vertically acts on the clamping piece 76 when the extension spring 77 pushes the clamping piece 76 to act through the elasticity of the extension spring 77, so that two ends of the clamping piece 76 can be accurately clamped in corresponding tooth grooves on the rack 75; meanwhile, the handle 78 is further mounted at the upper end of the pull rod 74, and the handle 78 is connected with the pull rod 74 through a screw, so that people can directly drive the pull rod 74 through the handle 78 when driving the pull rod 74, and the drive of the pull rod 74 is more convenient.

In some embodiments, as shown in fig. 5, an optical cable clamp 9 is further installed at the leading-out end of the pulling rope 8, and the optical cable clamp 9 mainly clamps and fixes the sensing optical cable, so that the pulling rope 8 and the sensing optical cable are connected quickly and fixedly, and the pulling rope 8 is effectively prevented from damaging the sensing optical cable when being connected with the sensing optical cable, so that the connection between the pulling rope 8 and the sensing optical cable is quicker and more convenient.

In some embodiments, the cable clamp 9 includes an upper clamp plate 91 and a lower clamp plate 92, the pulling rope 8 is fixed to the upper clamp plate 91 or/and the lower clamp plate 92, in order to facilitate connection between the pulling rope 8 and the upper clamp plate 91 or/and the lower clamp plate 92, a turning lug may be disposed on the lower clamp plate 92, and a leading end of the pulling rope 8 may be fixedly connected to the turning lug, or a through hole may be directly formed in the lower clamp plate 92, and the leading end of the pulling rope 8 may be tied and fixed after penetrating through the through hole. Offer a mounting groove 93 with the cable adaptation on punch-out plate 91 or the punch-out plate 91, mounting groove 93 is for leading to the groove, mounting groove 93 is located punch-out plate 91's the face that compresses tightly or lower plate 92's the face that compresses tightly, and punch-out plate 91's the face that compresses tightly for punch-out plate 91 and the laminating of lower plate 92, lower plate 92's the face that compresses tightly for the laminating of lower plate 92 and punch-out plate 91, the width of mounting groove 93 slightly is less than cable diameter size, and/or the degree of depth that leads to the groove slightly is less than cable diameter size, mounting groove 93 can the adaptation with the cable promptly, the concrete meaning of here adaptation is that the cable can penetrate mounting groove 93, and further fix the sensing optical cable through this mounting groove 93, the sensing optical cable can not rock about and/or from top to bottom in mounting groove 93 promptly. Of course, as an option, the cable is adapted to the mounting groove 93, and it is understood that the width of the mounting groove 93 is slightly larger than the diameter of the cable, and/or the depth of the through groove is slightly larger than the diameter of the cable, in which case, the fixing of the sensing optical cable can also be realized, and still fall within the protection scope of the present invention. More specifically, the mounting groove 93 includes an entrance section, i.e., a mounting groove 93 inlet, a fixed section, and an exit section, i.e., a mounting groove 93 outlet. In fact, in the process of installing and fixing the sensing optical cable, the installation groove 93 has no strict wire inlet and no strict wire outlet, one end of the installation groove 93 is the wire inlet, and the other end of the installation groove 93 is the wire outlet, that is, the sensing optical cable can be led in or out from any end of the installation groove 93. The upper clamp plate 91 and the lower clamp plate 92 are correspondingly provided with connecting holes, the upper clamp plate 91 and the lower clamp plate 92 are provided with corresponding connecting holes, screws are installed in the two corresponding connecting holes together, and the upper clamp plate 91 and the lower clamp plate 92 are locked and fixed through the screws.

In some embodiments, two ends of the mounting groove 93 are trumpet-shaped, specifically, the trumpet-shaped in this embodiment is an outward-emitting trumpet-shaped, so that it is only required to ensure that the opening of the wire inlet of the mounting groove 93 is larger than the cross section (size) of the sensing optical cable, and damage to the protective layer of the sensing optical cable due to small or sharp wire inlet is effectively reduced.

In some embodiments, the bottom of the frame 1 is further provided with wheels 10, the wheels 10 are directly used by the wheels 10 of the existing mobile trolley, and the wheels 10 have brake structures, so that the mobile trolley is more convenient to carry, and when the pull rope 8 needs to pull the sensing cable, the brake structures of the wheels 10 can effectively prevent the frame from moving, and the pull rope 8 and the sensing cable are better in pulling effect.

The adjusting mechanism 7 for adjusting the up-and-down movement of the outgoing line wheel 6 on the frame 1 can also directly adopt a linear driving structure 5 for driving the tension wheel 3 to move; meanwhile, the linear driving structure 5 and the adjusting mechanism 7 in the present invention can be replaced by other linear driving elements, such as an air cylinder, an electronic telescopic rod, etc.

When the sensing optical cable needs to be installed, one end of the sensing optical cable can be fixed firstly, then the utility model is carried to the fixed position, the pull rod 74 is manually lifted, the clamping piece 76 is driven to be lifted while the pull rod 74 is lifted, the extension spring 77 is compressed by external force at the moment, the clamping piece 76 loses the clamping with the rack 75, the movable seat 79 and the clamping piece 76 are manually driven to slide in the U-shaped base 71 through the pull rod 74, so that the wire leading-out wheel 6 arranged on the movable seat 79 moves synchronously, when the wire leading-out wheel 6 moves to the corresponding position, the tension on the pull rod 74 is lost, the expansion spring 77 pushes the clamping piece 76 to move towards the rack 75 through the self elasticity, the clamping piece 76 drives the pull rod 74 to move at the same time of moving, so that the two ends of the clamping piece 76 are respectively clamped in the corresponding tooth grooves on the rack 75, so that the clamping piece 76 and the rack 75 are clamped again, and the height of the outgoing reel 6 corresponds to the installation height of the sensing optical cable.

The pull rope 8 is wound on the reel 4 and the tension wheel 3 together, the leading-out end of the pull rope 8 is wound on the leading-out wheel 6 with the height adjusted, an upper clamp plate 91 and a lower clamp plate 92 in the optical cable clamp 9 are separated, then the sensing optical cable is clamped in a mounting groove 93 in the upper clamp plate 91 or the lower clamp plate 92, the upper clamp plate 91 and the lower clamp plate 92 are fixed through screws, and the sensing optical cable is clamped and fixed on the optical cable clamp 9.

Through the hand wheel 56 drive lead screw 52 and rotate, through the cooperation of lead screw 52 and slider 53, lead screw 52 drives slider 53 and slides along spout 51 when the pivoted, slider 53 installs mount pad 54 on slider 53 in the gliding, install take-up pulley 3 on mount pad 54 along with slider 53 synchronous motion, make take-up pulley 3 and the interval between two adjacent reels 4 crescent gradually, make stay cord 8 take up to the sensitization cable gradually, stay cord 8 is in the taut in-process to the sensitization cable, the rate of tension of stay cord 8 is monitored to tensiometer 2, when the rate of tension that tensiometer 2 detected reaches the fixed value, stop the drive to lead screw 52, at this moment, it can to fix the part that the sensing optical cable is in the tensioning state on the base member that waits to monitor through sensing optical cable mounting fixture.

In the process of tensioning the sensing optical cable, two tension machines provided by the utility model can be used for respectively tensioning two ends of the sensing optical cable, and at the moment, one end of the sensing optical cable does not need to be fixed on the wall surface or the ground.

The tension machine provided by the utility model is not limited to the tensioning of the sensing optical cable in the tunnel, and can also be used in any mounting working condition of the sensing optical cable in which the sensing optical cable needs to be tensioned and mounted; meanwhile, the utility model can also be used in other cable installation working conditions in which the cable needs to be tensioned and installed.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the utility model. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are within the scope of the utility model.

Claims (10)

1. The tension machine for adjusting the tension of the sensing optical cable is characterized by comprising a rack (1), wherein a tension meter (2), a tension wheel (3) and a plurality of winding wheels (4) are mounted on the rack (1), a pull rope (8) is wound on the tension wheel (3) and the plurality of winding wheels (4) together, and one end of the pull rope (8) is fixed with the tension meter (2); and a linear driving structure (5) for driving the tensioning wheel (3) to move is further mounted on the frame (1).

2. The tensile machine for adjusting the tension of a sensing optical cable according to claim 1, wherein the linear driving mechanism (5) comprises a sliding slot (51) located on the frame (1), a lead screw (52) and a sliding block (53) are installed in the sliding slot (51), the sliding block (53) is slidably arranged relative to the sliding slot (51), the sliding block (53) is in threaded engagement with the lead screw (52), and the tension wheel (3) is installed on the sliding block (53).

3. The pulling machine for adjusting the tension of a sensing optical cable according to claim 2, characterized in that the slider (53) is further mounted with a mounting seat (54), and the tension wheel (3) is mounted on the mounting seat (54); furthermore, a guide shaft (55) is further installed at the bottom of the sliding groove (51), and the sliding block (53) is in sliding fit with the guide shaft (55); furthermore, one end of the screw rod (52) penetrates through the rack (1) and extends outwards, and a hand wheel (56) is mounted at the extending end of the screw rod (52).

4. The pulling machine for adjusting the tension of the sensing optical cable according to claim 1, wherein the frame (1) is further provided with a wire leading-out wheel (6) and an adjusting mechanism (7) for adjusting the wire leading-out wheel (6) to move up and down, and the leading-out end of the pulling rope (8) is wound on the wire leading-out wheel (6); furthermore, the number of the wire leading-out wheels (6) is two, and the two wire leading-out wheels (6) are respectively positioned at the upper end and the lower end of the rack (1).

5. The tensile machine for adjusting the tension of a sensing optical cable according to claim 4, wherein the adjusting mechanism (7) comprises a U-shaped base (71) vertically extending on the frame (1), the U-shaped base (71) is provided with a movable seat (79) capable of moving relatively and a locking structure for locking the movable seat (79), and the wire leading-out wheel (6) is mounted on the movable seat (79).

6. The tensile machine for adjusting the tension of a sensing cable according to claim 5, wherein the U-shaped base (71) has inward-folded edge tables (72) on both sides, and the movable base (79) is slidably clamped on both sides below the edge tables (72).

7. The tensile machine for adjusting the tension of the sensing optical cable according to claim 6, wherein the locking structure comprises a sleeve (73) installed on the moving seat (79) and a pull rod (74) capable of sliding up and down in the sleeve (73), a rack (75) is further installed in the U-shaped base (71), a detachable clamping piece (76) is clamped on the rack (75), the lower end of the pull rod (74) is fixed with the clamping piece (76), and a telescopic spring (77) is further arranged between the clamping piece (76) and the top of the moving seat (79); furthermore, the extension spring (77) is sleeved on the pull rod (74), and a handle (78) is further arranged at the upper end of the pull rod (74).

8. A tensile machine for adjusting tension of a sensing cable according to claim 1, wherein the leading-out end of the pulling rope (8) is further provided with a cable clamp (9).

9. The tensile machine for adjusting the tension of the sensing optical cable according to claim 8, wherein the optical cable clamp (9) comprises an upper clamp plate (91) and a lower clamp plate (92), the pulling rope (8) is fixed with the upper clamp plate (91) or/and the lower clamp plate (92), a mounting groove (93) matched with the cable is formed in the opposite surface of the upper clamp plate (91) or the lower clamp plate (92), and the upper clamp plate (91) and the lower clamp plate (92) are locked and fixed through a screw; furthermore, two ends of the mounting groove (93) are trumpet-shaped.

10. The pulling machine for adjusting the tension of a sensing cable according to any one of claims 1 to 9, characterized in that wheels (10) are also mounted on the bottom of the frame (1).

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