CN118174195B - Coarse cable bridge laying stepping tractor - Google Patents
Coarse cable bridge laying stepping tractor Download PDFInfo
- Publication number
- CN118174195B CN118174195B CN202410595585.XA CN202410595585A CN118174195B CN 118174195 B CN118174195 B CN 118174195B CN 202410595585 A CN202410595585 A CN 202410595585A CN 118174195 B CN118174195 B CN 118174195B
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- walking device
- sliding
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- 238000005491 wire drawing Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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Abstract
The invention discloses a stepping tractor for laying a thick cable bridge, which relates to the technical field of cable laying and comprises a first walking device, a second walking device and a driving assembly, wherein the first walking device and the second walking device respectively comprise a transverse plate and a transverse arm, two ends of the transverse plate are respectively provided with an outer pinch roller for pressing an outer vertical surface of the bridge, the outer pinch roller is internally provided with a first rotating hub which rotates in a unidirectional way, the first rotating hub rolls forwards along the outer vertical surface of the bridge, two ends of the transverse arm are respectively provided with an inner supporting wheel for supporting an inner vertical surface of the bridge, the inner supporting wheel is internally provided with a second rotating hub which rotates in a unidirectional way, the second rotating hub rolls forwards along the inner vertical surface of the bridge, and the driving assembly is used for driving the first walking device and the second walking device to repeatedly approach and separate, and the first rotating hub and the second walking device are forced to alternately advance forwards along the bridge due to the fact that the first rotating hub and the second rotating hub cannot roll backwards.
Description
Technical Field
The invention relates to the technical field of cable laying, in particular to a stepping tractor for laying a thick cable bridge.
Background
The number of projects in modern urban construction is increased year by year, so that the number of power distribution equipment in a building is increased, large-scale cable laying engineering in a bridge in a power supply and distribution system becomes a construction difficulty, particularly when a thicker and heavier main cable is laid in the bridge, a traditional manual dragging mode is quite laborious, and a mode of replacing the manual dragging cable by a common winch also has a plurality of problems, such as first, the power output of the winch is too violent, the cable skin is extremely easy to wear, second, the winch is inconvenient to install on the bridge, third, the operation of the winch depends on a power supply, and a power line is required to be laid according to a temporary power utilization standard before the use, so that a mechanical dragging tool suitable for practical construction is needed at present.
Disclosure of Invention
Aiming at the technical problems, the invention provides the coarse cable bridge laying stepping tractor which can replace manual work, is convenient to use, does not need a power supply and can manually control the traction speed.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a thick cable testing bridge lays step-by-step tractor, includes first walking ware, second walking ware and drive assembly, first walking ware and second walking ware include respectively
The transverse plate is vertically arranged along the bridge, two ends of the transverse plate are respectively provided with an outer pressing wheel used for pressing the outer vertical surface of the bridge, the outer pressing wheels comprise first rotating hubs which rotate in one direction, and the first rotating hubs roll forwards along the outer vertical surface of the bridge;
The transverse arm is vertically arranged below the transverse plate along the bridge, two ends of the transverse arm are respectively provided with an inner supporting wheel used for supporting the inner vertical face of the bridge, the inner supporting wheels comprise second rotating hubs which rotate in one direction, and the second rotating hubs roll forwards along the inner vertical face of the bridge;
the drive assembly includes
The sliding rods are longitudinally arranged along the bridge frame, and each sliding rod is respectively connected with the transverse plates in the first walking device and the second walking device in a sliding manner;
The connecting frame is fixedly connected among the plurality of sliding rods;
The stepping screw rod is connected to the connecting frame in a reciprocating and rotating mode, one end of the stepping screw rod is in threaded connection with the transverse plate in the first walking device, the other end of the stepping screw rod is in threaded connection with the transverse plate in the second walking device, and the threaded directions of the two ends of the stepping screw rod are opposite.
As an optimal technical scheme, two ends of the transverse plate are respectively connected with a sliding table in a sliding manner along the length direction of the transverse plate, and the bottom of the sliding table is fixedly connected with a vertical external pressing shaft;
the transverse plate is rotationally connected with a pair of wire drawing rods along the length direction of the transverse plate, one end of each pair of wire drawing rods is in threaded connection with one sliding table, the other end of each pair of wire drawing rods is in threaded connection with the other sliding table, and the directions of the threads at the two ends of each pair of wire drawing rods are opposite;
One end of the opposite-pulling screw rod is fixedly connected with a rotary handle.
As an optimal technical scheme, an outer ratchet wheel is fixedly connected to the opposite-pulling screw rod, a fixed seat is fixedly arranged on the transverse plate, a ratchet block matched with the outer ratchet wheel is connected in the fixed seat in a sliding manner along the radial direction of the outer ratchet wheel, and a deflector rod is fixedly connected to the ratchet block;
The fixed seat is internally provided with a pressure spring, and the pressure spring pushes the ratchet block towards the direction close to the outer ratchet wheel.
As an optimized technical scheme, the outer pressing wheel further comprises a first shaft sleeve fixedly sleeved on the outer pressing shaft, a first core disc is fixedly connected to the first shaft sleeve, a plurality of first mounting grooves are uniformly formed in the circumferential surface of the first core disc, first pawls are respectively arranged in the plurality of first mounting grooves in a swinging mode, first spring pieces are respectively arranged in the first mounting grooves, and the first spring pieces enable the first pawls to have a trend of swinging outwards;
The first rotating hub is sleeved outside the first core disc in a clearance fit manner and is rotationally connected to the first shaft sleeve, a plurality of first inner ratchets matched with the first pawls are uniformly arranged on the inner peripheral surface of the first rotating hub, and a first rubber sleeve is sleeved on the outer periphery of the first rotating hub.
As an optimized technical scheme, the cross arm comprises a sliding sleeve, two ends of the sliding sleeve are respectively sleeved with telescopic arms in a sliding manner, and the outer ends of the two telescopic arms are respectively fixedly connected with a vertical inner supporting shaft;
An adjusting screw rod is vertically and rotationally connected to the sliding sleeve, a hinged support is connected to the adjusting screw rod in a threaded manner, connecting rods are respectively hinged to two sides of the hinged support, one connecting rod is hinged to one telescopic arm, and the other connecting rod is hinged to the other telescopic arm;
and the adjusting screw rod is fixedly connected with a rotary hand wheel.
As an optimized technical scheme, the inner supporting wheel further comprises a second sleeve fixedly sleeved on the inner supporting shaft, a second core disc is fixedly connected to the second sleeve, a plurality of second mounting grooves are uniformly formed in the circumferential surface of the second core disc, second pawls are respectively arranged in the second mounting grooves in a swinging mode, second spring pieces are respectively arranged in the second mounting grooves, and the second pawls have a tendency of swinging outwards;
The second rotating hub is sleeved outside the second core disc in a clearance fit manner and is rotationally connected to the second sleeve, a plurality of second inner ratchets matched with the second pawls are uniformly arranged on the inner peripheral surface of the second rotating hub, and a second rubber sleeve is sleeved on the outer periphery of the second rotating hub.
As the preferable technical scheme, be equipped with straight notch on the diaphragm along its length direction, sliding sleeve top fixedly connected with vertical connecting pin, the connecting pin sliding fit is in straight notch.
As an optimal technical scheme, a swinging shaft is rotationally connected to the connecting frame, a driving gear is fixedly connected to the swinging shaft, and a swinging arm is fixedly connected to the swinging shaft;
The stepping screw rod is fixedly connected with a driven gear, and the driven gear is meshed with the driving gear.
As a preferred technical solution, the pitch circle radius of the driving gear is larger than the pitch circle radius of the driven gear.
As an optimal technical scheme, a traction rod is hinged to the bottom of a cross arm in the first walking device.
Compared with the prior art, the invention has the following advantages:
The coarse cable bridge laying stepping tractor can be conveniently arranged on the bridge without using a power supply, the first walking device and the second walking device can be driven to alternately advance by manually swinging the swing arm, so that a cable can be pulled forward in the longitudinal direction of the bridge in a labor-saving manner.
Drawings
FIG. 1 is a schematic diagram of a step retractor for laying thick cable trays;
FIG. 2 is a schematic view of the first walker of FIG. 1;
FIG. 3 is an exploded view of the first runner of FIG. 2;
FIG. 4 is a top cross-sectional view of a set of cooperating inner support wheels and outer pinch wheels in the first walker (arrows in the figure indicate the direction of travel of the inner support wheels and outer pinch wheels);
FIG. 5 is an exploded view of the inner support wheel and outer pinch wheel of FIG. 4;
FIG. 6 is a schematic structural view of a fixing seat and an internal structure thereof in the first walker;
FIG. 7 is an exploded view of the holder and its internal structure of FIG. 6;
FIG. 8 is a schematic view of the second walker of FIG. 1;
FIG. 9 is a schematic diagram of the driving assembly of FIG. 1;
Fig. 10 is a view showing the effect of the thick cable bridge laying stepping tractor of fig. 1.
In the drawing the view of the figure,
10-A first runner; 11-a cross plate; 111-straight slots; 112-handle; 12-sliding table; 121-an external pressure shaft; 13-an outer pinch roller; 131-a first sleeve; 132-a first core disc; 1321-a first mounting slot; 133-a first pawl; 134-a first spring piece; 135-a first hub; 1351-first inner ratchet teeth; 136-a first gum cover; 14-a pair of pull lead screws; 141-rotating the handle; 142-outer ratchet; 15-fixing seats; 151-ratchet block; 1511—a lever; 152-compression springs; 16-cross arm; 161-sliding sleeve; 1611-connecting pins; 162-telescoping arm; 1621-an inner support shaft; 17-an inner support wheel; 171-a second hub; 172-a second core disc; 1721-second mounting slots; 173-a second pawl; 174-a second spring piece; 175-a second hub; 1751-second inner ratchet teeth; 176-a second gum cover; 18-adjusting a screw rod; 181-rotating a hand wheel; 182-a hinged support; 183-connecting rod; 19-a traction rod; 20-a second walker; 30-a drive assembly; 31-a slide bar; 32-connecting frames; 33-stepping a screw rod; 331-driven gear; 34-swinging shaft; 341-a drive gear; 342-swing arm; 40-bridge frame.
Detailed Description
The following detailed description of the invention will be made with reference to the accompanying drawings.
As shown in fig. 1-10, a stepping tractor for laying a thick cable bridge comprises a first walking device 10, a second walking device 20 and a driving assembly 30, wherein the tractor is used for being installed on a bridge 40 and carrying out stepping traction on a cable along the longitudinal direction of the bridge 40, the first walking device 10 comprises a transverse plate 11 and a cross arm 16, two ends of the transverse plate 11 are respectively provided with a sliding table 12, the distance between the two sliding tables 12 is adjustable, in the embodiment, the two sliding tables 12 are respectively and slidably connected to the transverse plate 11, the sliding direction of the sliding table 12 is consistent with the length direction of the transverse plate 11, a counter-pulling screw 14 is rotatably connected above the transverse plate 11, the axial direction of the counter-pulling screw 14 is parallel to the length direction of the transverse plate 11, one end of the counter-pulling screw 14 is in threaded connection with one sliding table 12 on the transverse plate 11, the other end of the counter-pulling screw 14 is in threaded connection with the other sliding table 12 on the transverse plate 11, one end of the counter-pulling screw 14 is fixedly connected with a rotary handle 141, and the counter-pulling screw 14 can be rotated by the rotary handle 141 to drive the two sliding tables 12 on the transverse plate 11.
The middle part of the counter-pulling rod 14 is fixedly connected with an outer ratchet wheel 142, a fixed seat 15 is fixedly arranged below the outer ratchet wheel 142 on the transverse plate 11, a ratchet block 151 is connected inside the fixed seat 15 in a sliding manner along the radial direction of the outer ratchet wheel 142, a pressure spring 152 is arranged in the fixed seat 15, the pressure spring 152 pushes the ratchet block 151 towards the direction close to the outer ratchet wheel 142, so that the upper end ratchet of the ratchet block 151 is elastically meshed with the outer ratchet wheel 142, a unidirectional locking effect is provided for the counter-pulling rod 14, specifically, the counter-pulling rod 14 can rotate clockwise to drive the two sliding tables 12 to be close to each other but cannot rotate anticlockwise, the trend that the two sliding tables 12 are away from each other is restrained, a deflector rod 1511 is fixedly connected to the ratchet block 151, and when the counter-pulling rod 14 needs to rotate anticlockwise to enable the two sliding tables 12 to be away from each other, the ratchet block 151 can be pulled away from the outer ratchet wheel 142 through the deflector rod 1511, so that the counter-pulling rod is separated from the outer ratchet wheel 142.
The bottom fixedly connected with vertical outer pressure axle 121 of slip table 12, be equipped with outer pinch roller 13 on the outer pressure axle 121, outer pinch roller 13 is arranged in compressing tightly the outer facade of crane span structure 40, outer pinch roller 13 is including fixed cover dress in the first axle sleeve 131 on outer pressure axle 121, fixedly connected with first core dish 132 on the first axle sleeve 131, the outside clearance fit ground cover of first core dish 132 is equipped with first rotating hub 135, first rotating hub 135 rotates to be connected on first axle sleeve 131, evenly be equipped with a plurality of first inner ratchets 1351 on the inner peripheral surface of first rotating hub 135, evenly be equipped with a plurality of first mounting groove 1321 on the periphery of first core dish 132, be equipped with first pawl 133 and first spring leaf 134 in a plurality of first mounting groove 1321 respectively, wherein the one end rotation of first pawl 133 sets up in first mounting groove 1321, make the other end of first pawl 133 can swing, first pawl 134 outwards pushes up first pawl 133, make the swing end of first pawl 133 and the first inner ratchet 1351 elastic engagement on the inner peripheral surface of first rotating hub 135, so that first rotating hub 135 can be satisfied with the first rotating hub 135 and the first outer facade of crane span structure 136 can be rotated forward, the one-way rotation of first rotating hub 136 can be rotated to the outer facade of crane span structure 136, the one-way can be rotated to the outer side of the reel 136 is equipped with the first rotating hub 136, the one-way to rotate and can roll forward and can be rotated to the one-way to rotate, and can rotate forward and rotate, and can rotate.
The cross arm 16 comprises a sliding sleeve 161 installed below the transverse plate 11, the sliding sleeve 161 is consistent with the length direction of the transverse plate 11, two ends of the sliding sleeve 161 are respectively provided with telescopic arms 162 along the length direction of the sliding sleeve, the distance between the two telescopic arms 162 is adjustable, in the embodiment, the two telescopic arms 162 are respectively sleeved in the sliding sleeve 161 in a sliding manner, the middle part of the sliding sleeve 161 is vertically and rotationally connected with an adjusting screw 18 along the length direction of the sliding sleeve, a hinged support 182 is connected onto the adjusting screw 18 in a threaded manner, two sides of the hinged support 182 are respectively hinged with a connecting rod 183, one connecting rod 183 is hinged with one telescopic arm 162, the other connecting rod 183 is hinged with the other telescopic arm 162, a rotary hand wheel 181 is fixedly connected onto the adjusting screw 18, and when the adjusting screw 18 is rotated by using the rotary hand wheel 181, the hinged support 182 can be driven to axially move along the adjusting screw 18, and then the two telescopic arms 162 are driven to oppositely slide by the two connecting rods 183.
The outer ends of the two telescopic arms 162 are respectively and fixedly connected with a vertical inner supporting shaft 1621, the inner supporting shaft 1621 is provided with an inner supporting wheel 17, the inner supporting wheel 17 is used for supporting the inner vertical surface of the bridge 40, the inner supporting wheel 17 comprises a second sleeve 171 fixedly sleeved on the inner supporting shaft 1621, the second sleeve 171 is fixedly connected with a second core disc 172, a second rotating hub 175 is sleeved outside the second core disc 172 in a clearance fit manner, the second rotating hub 175 is rotatably connected on the second sleeve 171, the inner peripheral surface of the second rotating hub 175 is uniformly provided with a plurality of second inner ratchets 1751, the peripheral surface of the second core disc 172 is uniformly provided with a plurality of second mounting grooves 1721, the plurality of second mounting grooves 1721 are respectively provided with a second pawl 173 and a second spring piece 174, wherein one end of the second pawl 173 is rotatably arranged in the second mounting groove 1721, so that the other end of the second pawl 173 can swing, the second spring piece 174 pushes the second pawl 173 outwards, the swinging end of the second pawl 173 is elastically meshed with a second inner ratchet 1751 on the inner peripheral surface of the second rotating hub 175, the second rotating hub 175 can only rotate unidirectionally, the rotating direction of the second rotating hub 175 is in order to meet the condition that the second rotating hub 175 can roll forwards on the inner vertical surface of the bridge 40, a second rubber sleeve 176 is sleeved on the outer periphery of the second rotating hub 175, and the second rubber sleeve 176 can generate larger friction force with the inner vertical surface of the bridge 40.
Optionally, the transverse plate 11 is provided with a straight notch 111 along the length direction thereof, the top of the sliding sleeve 161 is fixedly connected with a vertical connecting pin 1611, the connecting pin 1611 is slidably assembled in the straight notch 111, and the connecting structure enables a small amount of longitudinal relative displacement between the transverse plate 11 and the sliding sleeve 161 to occur, so that mechanical errors can be offset by itself, each outer pinch roller 13 can be matched with an inner supporting wheel 17 adjacent to the inner side of the outer pinch roller 13 to firmly clamp a vertical plate on the bridge 40, and in addition, the transverse plate 11 is fixedly connected with a handle 112, so that the first travelling device 10 can be conveniently lifted and placed by using the handle 112.
The second walker 20 is basically the same as the first walker 10 in structure, so the structure of the second walker 20 is not repeated herein, and according to the advancing direction of the tractor, the second walker 20 is arranged in front of the first walker 10 side by side, except that the bottom of the cross arm 16 in the first walker 10 is hinged with a traction rod 19, the traction rod 19 extends to the rear of the first walker 10, and the traction rod 19 is used for connecting and dragging cables.
The driving assembly 30 comprises a plurality of slide bars 31 vertically arranged along the length direction of the transverse plate 11, each slide bar 31 is respectively connected with the transverse plate 11 in the first walking device 10 and the second walking device 20 in a sliding way, a connecting frame 32 is fixedly connected between the slide bars 31, a stepping screw rod 33 parallel to the slide bars 31 is rotationally connected to the connecting frame 32, one end of the stepping screw rod 33 is in threaded connection with the transverse plate 11 in the first walking device 10, the other end of the stepping screw rod 33 is in threaded connection with the transverse plate 11 in the second walking device 20, the threads at the two ends of the stepping screw rod 33 are opposite in direction, a driven gear 331 is fixedly connected to the stepping screw rod 33, a swinging shaft 34 is rotationally connected to the connecting frame 32, a driving gear 341 is fixedly connected to the swinging shaft 34, the driving gear 341 is meshed with the driven gear 331, a swinging arm 342 is fixedly connected to the swinging shaft 34, and the swinging shaft 34 can be driven to swing reciprocally in a certain angle range.
When the tractor is used, the first walking device 10 and the second walking device 20 are required to be respectively arranged on the bridge 40, the transverse plate 11 and the cross arm 16 are required to be vertically aligned along the bridge 40 during the installation, the sliding rod 31 is required to be vertically aligned along the bridge 40, firstly, the rotary hand wheel 181 is used for adjusting the distance between the two telescopic arms 162 in the cross arm 16, the two inner supporting wheels 17 are used for respectively supporting the inner vertical surface of the bridge 40, and then the rotary handle 141 is used for adjusting the distance between the two sliding tables 12, so that the two outer pressing wheels 13 respectively press the outer vertical surface of the bridge 40, and the two sliding tables 12 cannot be separated by themselves due to the fact that the ratchet block 151 in the fixed seat 15 is matched with the outer ratchet wheel 142 to unidirectionally lock the wire drawing rod 14, so that the outer pressing wheels 13 are prevented from loosening.
After the first walker 10 and the second walker 20 are installed, the end of the cable is connected with the traction rod 19 on the first walker 10, an operator can drive the tractor and drag the cable to advance along the longitudinal direction of the bridge 40 by reciprocating the swing arm 342, specifically, when the swing arm 342 is lifted, the driving gear 341 rotates anticlockwise, the driven gear 331 drives the stepping screw 33 to rotate clockwise, the first walker 10 and the second walker 20 are far away from each other, the outer pressing wheel 13 and the inner supporting wheel 17 in the first walker 10 cannot roll backwards, the second walker 20 is forced to move forwards for a certain distance, when the swing arm 342 is pressed down, the driving gear 341 rotates clockwise, the driven gear 331 drives the stepping screw 33 to rotate anticlockwise, the first walker 10 and the second walker 20 are close to each other, and the outer pressing wheel 13 and the inner supporting wheel 17 in the second walker 20 cannot roll backwards, so that the first walker 10 and the second walker 20 are forced to move forwards for a certain distance, the cycle is made to alternately advance, the driving gear 33 is driven by a certain distance, the rotation of the driving gear 341 is made to rotate forwards, the indexing circle radius of the driving gear is increased, and the indexing circle radius of the driving gear is increased by a larger than that the driving gear is achieved, and the driving gear is driven by the driving gear 33.
While there has been shown and described what are at present considered to be fundamental principles, main features and advantages of the present invention, it will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a thick cable testing bridge lays step-by-step tractor which characterized in that: comprises a first walking device (10), a second walking device (20) and a driving assembly (30), wherein the first walking device (10) and the second walking device (20) respectively comprise
The transverse plate (11) is vertically arranged along the bridge, two ends of the transverse plate (11) are respectively provided with an outer pressing wheel (13) for pressing the outer vertical surface of the bridge, the outer pressing wheels (13) comprise first rotating hubs (135) which rotate in one direction, and the first rotating hubs (135) roll forwards along the outer vertical surface of the bridge;
The transverse arm (16) is vertically arranged below the transverse plate (11) along the bridge, two ends of the transverse arm (16) are respectively provided with an inner supporting wheel (17) for supporting the inner vertical surface of the bridge, the inner supporting wheels (17) comprise second rotating hubs (175) which rotate in one direction, and the second rotating hubs (175) roll forwards along the inner vertical surface of the bridge;
The drive assembly (30) comprises
The sliding rods (31) are longitudinally arranged along the bridge frame, and each sliding rod (31) is respectively connected with the transverse plates (11) in the first walking device (10) and the second walking device (20) in a sliding manner;
the connecting frame (32) is fixedly connected among the plurality of sliding rods (31);
The stepping screw rod (33) is connected to the connecting frame (32) in a reciprocating and rotating mode, one end of the stepping screw rod (33) is in threaded connection with the transverse plate (11) in the first walking device (10), the other end of the stepping screw rod is in threaded connection with the transverse plate (11) in the second walking device (20), and the threaded directions of the two ends of the stepping screw rod (33) are opposite;
A swinging shaft (34) is rotatably connected to the connecting frame (32), a driving gear (341) is fixedly connected to the swinging shaft (34), and a swinging arm (342) is fixedly connected to the swinging shaft;
the stepping screw rod (33) is fixedly connected with a driven gear (331), and the driven gear (331) is meshed with the driving gear (341).
2. The thick cable bridge laying stepper tractor of claim 1, wherein: two ends of the transverse plate (11) are respectively connected with a sliding table (12) in a sliding manner along the length direction, and the bottom of the sliding table (12) is fixedly connected with a vertical external pressing shaft (121);
A pair of wire drawing rods (14) are rotatably connected to the transverse plate (11) along the length direction of the transverse plate, one end of each pair of wire drawing rods (14) is in threaded connection with one sliding table (12), the other end of each pair of wire drawing rods is in threaded connection with the other sliding table (12), and the directions of the threads at the two ends of each pair of wire drawing rods (14) are opposite;
One end of the pair of wire drawing rods (14) is fixedly connected with a rotary handle (141).
3. The thick cable bridge laying stepper tractor of claim 2, wherein: an outer ratchet wheel (142) is fixedly connected to the pair of wire drawing rods (14), a fixed seat (15) is fixedly installed on the transverse plate (11), a ratchet block (151) matched with the outer ratchet wheel (142) is connected in the fixed seat (15) in a sliding manner along the radial direction of the outer ratchet wheel (142), and a deflector rod (1511) is fixedly connected to the ratchet block (151);
The fixed seat (15) is internally provided with a pressure spring (152), and the pressure spring (152) pushes the ratchet block (151) towards the direction close to the outer ratchet wheel (142).
4. The thick cable bridge laying stepper tractor of claim 2, wherein: the outer pressing wheel (13) further comprises a first shaft sleeve (131) fixedly sleeved on the outer pressing shaft (121), a first core disc (132) is fixedly connected to the first shaft sleeve (131), a plurality of first mounting grooves (1321) are uniformly formed in the circumferential surface of the first core disc (132), first pawls (133) are respectively arranged in the first mounting grooves (1321) in a swinging mode, first spring pieces (134) are respectively arranged in the first mounting grooves (1321), and the first pawls (133) have a tendency of swinging outwards due to the first spring pieces (134);
The first rotating hub (135) is sleeved outside the first core disc (132) in a clearance fit manner and is rotationally connected to the first shaft sleeve (131), a plurality of first inner ratchets (1351) matched with the first pawls (133) are uniformly arranged on the inner peripheral surface of the first rotating hub (135), and a first rubber sleeve (136) is sleeved on the outer periphery of the first rotating hub (135).
5. The thick cable bridge laying stepper tractor of claim 1, wherein: the cross arm (16) comprises a sliding sleeve (161), two ends of the sliding sleeve (161) are respectively sleeved with telescopic arms (162) in a sliding manner, and the outer ends of the two telescopic arms (162) are respectively fixedly connected with a vertical inner supporting shaft (1621);
An adjusting screw rod (18) is rotatably connected to the sliding sleeve (161) along the vertical direction of the sliding sleeve, a hinged support (182) is connected to the adjusting screw rod (18) in a threaded mode, connecting rods (183) are hinged to two sides of the hinged support (182) respectively, one connecting rod (183) is hinged to one telescopic arm (162), and the other connecting rod (183) is hinged to the other telescopic arm (162);
and the adjusting screw rod (18) is fixedly connected with a rotary hand wheel (181).
6. The thick cable bridge laying stepping retractor of claim 5, wherein: the transverse plate (11) is provided with a straight notch (111) along the length direction of the transverse plate, the top of the sliding sleeve (161) is fixedly connected with a vertical connecting pin (1611), and the connecting pin (1611) is slidingly assembled in the straight notch (111).
7. The thick cable bridge laying stepping retractor of claim 5, wherein: the inner support wheel (17) further comprises a second sleeve (171) fixedly sleeved on the inner support shaft (1621), a second core disc (172) is fixedly connected to the second sleeve (171), a plurality of second mounting grooves (1721) are uniformly formed in the circumferential surface of the second core disc (172), second pawls (173) are respectively arranged in the second mounting grooves (1721) in a swinging mode, second spring pieces (174) are respectively arranged in the second mounting grooves (1721), and the second pawls (173) have a tendency of swinging outwards due to the second spring pieces (174);
The second rotating hub (175) is sleeved outside the second core disc (172) in a clearance fit manner and is rotationally connected to the second shaft sleeve (171), a plurality of second inner ratchets (1751) matched with the second pawls (173) are uniformly arranged on the inner peripheral surface of the second rotating hub (175), and a second rubber sleeve (176) is sleeved on the outer periphery of the second rotating hub (175).
8. The thick cable bridge laying stepper tractor of claim 1, wherein: the pitch circle radius of the driving gear (341) is larger than the pitch circle radius of the driven gear (331).
9. The thick cable bridge laying stepper tractor of claim 1, wherein: the bottom of the cross arm (16) in the first walking device (10) is hinged with a traction rod (19).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410595585.XA CN118174195B (en) | 2024-05-14 | 2024-05-14 | Coarse cable bridge laying stepping tractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410595585.XA CN118174195B (en) | 2024-05-14 | 2024-05-14 | Coarse cable bridge laying stepping tractor |
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| Publication Number | Publication Date |
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| CN118174195A CN118174195A (en) | 2024-06-11 |
| CN118174195B true CN118174195B (en) | 2024-07-16 |
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| CN202410595585.XA Active CN118174195B (en) | 2024-05-14 | 2024-05-14 | Coarse cable bridge laying stepping tractor |
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