CN115793169A - Optical cable tractor - Google Patents

Abstract

The invention belongs to the field of optical cable laying, and particularly relates to an optical cable tractor which comprises a case, wherein the bottom of the case is fixedly provided with a bottom plate, and one side of the case is fixedly provided with a baffle plate. The conveying and the recovery of the optical cable can be completed when the optical cable is laid, and the accidental blockage in the optical cable channel can be automatically processed to reduce the damage of the optical cable in the conveying process.

Description

Optical cable tractor

Technical Field

The invention belongs to the field of optical cable laying, and particularly relates to an optical cable tractor.

Background

At present, people all utilize the optical cable transportation process that the optical cable laying machine was accomplished when laying the optical cable, meet the condition that some optical cable tip were blocked and can't be carried in transportation process inevitable, solve this problem people often can manual change motor direction of rotation, make the propelling movement optical cable become the optical cable of pulling back, so relapse the push-and-pull many situations and can both pass through smoothly, but the optical cable is at the underground pipeline at transportation process, if meet the difficult very first time of the condition of being stuck and just discover the problem place in transportation process, can't in time make the reflection, thereby lead to the optical cable to bend by a wide margin, twist reverse the use that can seriously influence the optical cable. To this end, the present invention provides a cable conveyor to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides the field of optical cable laying.

The purpose of the invention can be realized by the following technical scheme: the utility model provides an optical cable tractor, includes quick-witted case, the fixed bottom plate that is provided with of machine bottom of the case portion, the fixed baffle that is provided with in machine case one side, the baffle is kept away from quick-witted case one side and is fixed and be provided with two pairs of roller bearings, every right the roller bearing surface all overlaps there is the conveyer belt, has the clearance that can carry the optical cable between two conveyer belts, the baffle is kept away from quick-witted case one side and is fixed and be provided with first supporting station, one side that the bottom plate was kept away from to first supporting station is fixed and is provided with air supply unit, first supporting station is close to bottom plate one side and is provided with the detection casing, the central point that detects the casing puts just to the clearance between two conveyer belts.

Preferably, one side of the conveying belt far away from the detection shell is fixedly provided with a first fixing device, a first guide pipe used for guiding the optical cable into a gap between the two conveying belts is detachably mounted in the first fixing device, one side of the detection shell far away from the conveying belt is fixedly provided with a second fixing device, a second guide pipe used for guiding the optical cable into the underground passage is detachably mounted in the second fixing device, and an opening is formed in one end, deep into the second fixing device, of the second guide pipe.

Preferably, the bottom plate bottom is rotated and is provided with a plurality of first gyro wheels, the bottom plate is close to first fixing device one side and opens and to have a plurality of mounting holes, it rolls to be provided with demountable installation's pay-off on the bottom plate, the pay-off is rolled the fixed backup pad that is provided with in bottom, the backup pad is kept away from the pay-off and is rolled one side and fixedly be provided with a plurality of installation poles that can insert in the mounting hole, one side rotation that the installation pole was kept away from to the backup pad bottom is provided with a plurality of second gyro wheels.

Preferably, a driving motor is fixedly arranged inside the case, a driving gear is fixedly connected to an output end of the driving motor, one end, far away from the driving motor, of the driving gear is fixedly connected with one rolling shaft, one end, far away from the driving motor, of the rolling shaft, the same side with the driving gear, of the driving gear extends into the case, a driven gear is fixedly arranged at one end, far away from the driving gear, of the rolling shaft, the same side with the driving gear extends into the case, the driving gear and the driven gear are meshed for transmission, and an operation panel is fixedly arranged at the top of the case.

Preferably, the air supply device comprises an air pump, an air supply pipe extends from one side of the air pump close to the second fixing device, and an air outlet end of the air supply pipe can penetrate into the opening to supply air to the interior of the second guide pipe.

Preferably, the detection casing includes casing, lower casing, its characterized in that, go up casing and first brace table fixed connection, the fixed smooth case that is provided with in casing bottom down, it is provided with the second brace table to slide in the smooth case, through spliced pole fixed connection between casing and the second brace table down, the fixed sensor that is provided with in smooth case bottom, the second brace table is kept away from the fixed telescopic link that is provided with in one side of spliced pole, the telescopic link is kept away from the one end of second brace table and is deepened inside the sensor, be connected with first spring between sensor and the second brace table.

Preferably, go up the casing and be provided with a plurality of axis of rotation with the internal rotation of inferior valve, go up the casing and the mutual symmetry of the inside axis of rotation of casing down, every the intermediate position of axis of rotation slides and is provided with two liang of relative rim plates, through connecting bucket fixed connection between per two relative rim plates, and per two opposite one sides of relative rim plate are fixed and are provided with the gasket, every be connected with the second spring between gasket and the rim plate, per two a plurality of notches have all been opened to the relative one side of rim plate, every the inside rotation of notch is provided with the piece that blocks that can provide the resistance when pullback the optical cable, block that piece one side can turn back the notch when propelling movement optical cable inside, it can turn back the inside one side of notch and be equipped with the mat face to block the piece.

Preferably, the upper shell and one side close to the case are rotatably provided with a plurality of sleeves, one end of the rotating shaft in each upper shell extends into the sleeves, and one end of the rotating shaft extending into the sleeves is connected with the sleeves through torsion springs.

Preferably, the fixed ratchet that is provided with of one end that the sleeve stretches out the upper housing, it has the slide rail to set up two relatively fixedly to go up one side that the casing is close to quick-witted case, two the slide rail bottom is connected through the connecting plate, the inside slip of slide rail is provided with the slide bar, the slide bar is kept away from connecting plate one side and is opened and have a plurality of spouts, every the spout is all just to the ratchet, every the inside all slip of spout is provided with blocks the piece, block fixed plush copper that can slow down ratchet slew velocity that is provided with of piece one end, every it has third spring coupling to block between the one end that the piece kept away from the plush copper and the slide bar, there are a plurality of fourth spring coupling between slide bar and the connecting plate, the fixed link that is provided with of one end that the connecting plate was kept away from to the slide bar, the link is kept away from the one end rotation of connecting plate and is provided with the card whistle.

Preferably, the torsion of the torsion spring increases in sequence along the direction of optical cable pushing, and the elasticity of the third spring increases in sequence along the direction of optical cable pushing.

Has the advantages that:

according to the invention, through the matching of the air supply device and the second guide pipe, the cleaning of waste residues in the underground channel in the conveying process of the optical cable is realized, and the occurrence of the blockage of the optical cable at the inner end part of the channel can be effectively reduced.

According to the invention, the lower shell is matched with the sensor, so that the optical cable is automatically adjusted when being blocked in the conveying process, and the optical cable can be effectively prevented from being damaged by continuous conveying after the pipeline is blocked.

According to the invention, through the matching of the torsion springs with different torsion forces and the rotating shaft, the optical cable can be firstly pulled into a tight straight line and then pulled out backwards when the optical cable is pulled back due to blockage, and the damage caused by direct winding due to the fact that the bent optical cable in the detection device cannot be timely recovered can be effectively prevented.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic view of a detection structure;

FIG. 5 is a schematic view of the backside of the detection structure;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a cross-sectional view taken at B-B of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 4 at C;

FIG. 9 is an enlarged view of a portion of FIG. 5 at D;

fig. 10 is a partial enlarged view at E in fig. 6.

In the figure: the device comprises a case 10, a bottom plate 12, a baffle plate 11, a roller 14, a conveyor belt 15, a first supporting platform 19, a first fixing device 25, a first guide pipe 26, a second fixing device 22, a second guide pipe 24, an opening 23, a first roller 41, a mounting hole 39, a feeding roller 36, a supporting plate 35, a mounting rod 38, a second roller 37, a driving motor 40, a driving gear 17, a driven gear 16, an operation panel 13, an air pump 20, an air supply pipe 21, an upper shell 27, a lower shell 28, a sliding box 18, a second supporting platform 32, a connecting column 30, a sensor 34, a telescopic rod 33, a first spring 31, a rotating shaft 58, a wheel disc 54, a connecting cylinder 59, a gasket 60, a second spring 61, a notch 55, a blocking sheet 56, a rough surface 57, a sleeve 48, a ratchet 49, a sliding rail 43, a connecting plate 42, a sliding rod 44, a sliding chute 50, a blocking block 51, a third spring 52, a fourth spring 46, a connecting frame 45 and a whistle 47.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

With reference to fig. 1-10, an optical cable tractor comprises a case 10, a bottom plate 12 is fixedly arranged at the bottom of the case 10, and a baffle 11 is fixedly arranged at one side of the case 10, wherein the baffle 11 is fixedly provided with two pairs of rollers 14 at a side far away from the case 10, each pair of rollers 14 is sleeved with a conveyor belt 15, a gap capable of conveying an optical cable is formed between the two conveyor belts 15, a first supporting table 19 is fixedly arranged at a side far away from the case 10 of the baffle 11, an air supply device is fixedly arranged at a side far away from the bottom plate 12 of the first supporting table, a detection shell is arranged at a side near the bottom plate 12 of the first supporting table 19, and the central position of the detection shell is just opposite to the gap between the two conveyor belts 15.

Furthermore, a first fixing device 25 is fixedly arranged on one side, away from the detection shell, of the conveyor belt 15, a first guide pipe 26 used for guiding the optical cable into a gap between the two conveyor belts 15 is detachably mounted inside the first fixing device 25, a second fixing device 22 is fixedly arranged on one side, away from the conveyor belt 15, of the detection shell, a second guide pipe 24 used for guiding the optical cable into an underground passage is detachably mounted inside the second fixing device 22, and an opening 23 is formed in one end, far into the second fixing device 22, of the second guide pipe 24.

Furthermore, a plurality of first rollers 41 are rotatably arranged at the bottom of the bottom plate 12, a plurality of mounting holes 39 are formed in one side, close to the first fixing device 25, of the bottom plate 12, a detachably mounted feeding roller 36 is arranged on the bottom plate 12, a supporting plate 35 is fixedly arranged at the bottom of the feeding roller 36, a plurality of mounting rods 38 capable of being inserted into the mounting holes 39 are fixedly arranged on one side, far away from the feeding roller 36, of the supporting plate 15, and a plurality of second rollers 37 are rotatably arranged on one side, far away from the mounting rods 38, of the bottom of the supporting plate 15.

Further, a driving motor 40 is fixedly arranged inside the case 10, an output end of the driving motor 40 is fixedly connected with a driving gear 17, one end, far away from the driving motor 40, of the driving gear 17 is fixedly connected with one roller 14, one end, same as the driving gear 17, of the roller 14 extends into the case 10 is fixedly provided with a driven gear 16, the driving gear 17 and the driven gear 16 are in meshed transmission, and an operation panel 13 is fixedly arranged at the top of the case 10.

Further, the air supply device comprises an air pump 20, an air supply pipe 21 extends from one side of the air pump 20 close to the second fixing device 22, and an air outlet end of the air supply pipe 21 can penetrate into the opening 23 to supply air to the inside of the second guide pipe 24.

Further, it includes casing 27 to detect the casing, casing 28 down, a serial communication port, go up casing 27 and first brace table fixed connection, casing 28 bottom is fixed and is provided with smooth case 18 down, it is provided with second brace table 32 to slide in smooth case 18, through spliced pole 30 fixed connection between lower casing 28 and the second brace table 32, the fixed sensor 34 that is provided with in smooth case 18 bottom, the fixed telescopic link 33 that is provided with in one side that spliced pole 30 was kept away from to second brace table 32, the one end that telescopic link 33 kept away from second brace table 32 is deep into inside sensor 34, be connected with first spring 31 between sensor 34 and the second brace table 32.

Further, go up casing 27 and the inside rotation of casing 28 down and be provided with a plurality of axis of rotation 58, go up casing 27 and the inside mutual symmetry of axis of rotation 58 of casing 28 down, the intermediate position of every axis of rotation 58 slides and is provided with two liang of relative rim plates 54, through connecting bucket 59 fixed connection between every two relative rim plates 54, the fixed gasket 60 that is provided with in the opposite one side of every two relative rim plates 54, be connected with second spring 61 between every gasket 60 and the rim plates 54, a plurality of notches 55 have all been opened to the relative one side of every two rim plates 54, the inside rotation of every notch 55 is provided with blocks piece 56 that can provide the resistance when the optical cable of pullback, it can turn back inside notch 55 when the optical cable to block piece 56 one side, it is equipped with rough surface 57 to block inside one side that piece 55 can turn back notch 55.

Furthermore, a plurality of sleeves 48 are rotatably disposed on the upper housing 27 and a side close to the chassis 10, one end of the rotating shaft 58 inside each upper housing 27 extends into the sleeve 48, and a torsion spring is connected between one end of the rotating shaft 58 extending into the sleeve 48 and the sleeve.

Further, a ratchet 49 is fixedly arranged at one end of the sleeve 48 extending out of the upper housing 27, two opposite slide rails 43 are fixedly arranged at one side of the upper housing 27 close to the chassis 10, the bottoms of the two slide rails 43 are connected through a connecting plate 42, a slide rod 44 is slidably arranged in each slide rail 43, a plurality of slide grooves 50 are formed in one side of the slide rod 44 away from the connecting plate 42, each slide groove 50 is opposite to the ratchet 49, a stop block 51 is slidably arranged in each slide groove 50, a raised head capable of reducing the rotating speed of the ratchet 49 is fixedly arranged at one end of each stop block 51, a third spring 52 is connected between one end of each stop block 51 away from the raised head and the slide rod 44, a plurality of fourth springs 46 are connected between the slide rod 44 and the connecting plate 42, a connecting frame 45 is fixedly arranged at one end of the slide rod 44 away from the connecting plate 42, and a whistle 47 is rotatably arranged at one end of the connecting frame 45 away from the connecting plate 42.

Further, the torsion force of the torsion spring increases in sequence along the direction of pushing the optical cable, and the elastic force of the third spring 52 increases in sequence along the direction of pushing the optical cable.

The working principle is as follows: initially, the mounting rod 38 is taken out from the mounting hole 39, the feed roller 36 wound with the optical fiber cable is fixed, then one end of the first guide tube 26 is fixed inside the first fixing device 25, one end of the second guide tube 24 provided with the opening 23 is fixed inside the second fixing device 22, the air supply tube 21 is inserted into the opening 23, and finally the unfixed end of the second guide tube 24 is inserted into the underground pipe, and the airtightness between the second guide tube 24 and the underground pipe is ensured.

When it is desired to convey the cable into the underground conduit, one end of the cable on the feed roller 36 is inserted into the first guide tube 26 until it is caught between the two belts 15. The operation panel 13 is operated to start the driving motor 40 and the air pump 20, the driving gear 17 is driven to rotate under the action of the driving motor 40, the driven gear 16 is driven to rotate, the two gears drive the conveyor belts 15 installed on the surfaces of the rollers 14 to start running, and the optical cable clamped between the two conveyor belts 15 can be extruded and pushed to the interior of the detection shell by the conveyor belts 15. The fiber optic cable entering the interior of the test housing is routed between the upper housing 27 and the wheel 54 within the lower housing 28. Inside the stopper 51 can be pushed back notch 55 when the optical cable contacts the one side that the rim plate 54 has notch 55, guarantee that the optical cable in-process stopper 51 can not produce the resistance to the optical cable, inside the optical cable can enter into second stand pipe 24 through detecting the casing back, inside the optical cable can get into underground duct smoothly under the guide effect of second stand pipe 24. The air pump 20 always supplies air to the inside of the underground pipeline through the air supply pipe 21, can clean small soil fragments in the underground pipeline, reduces moisture on the inner wall of the pipeline, and ensures the service life of the optical cable.

In the cable transportation process if the end of optical cable does not block in the gap of underground piping connection, probably lead to the unable normal transport of optical cable, nevertheless conveyer belt 15 still can continue to provide thrust for the optical cable, and dead optical cable of the place ahead card can not continue to advance, can distort gradually and buckle, because there is the pipeline to support inside the pipeline, the bending force of optical cable can be concentrated and transmitted to detecting the casing position. The wheel disc 54 inside the upper shell 27 and the lower shell 28 can overcome the elastic force of the second spring 61 to transversely deviate for a certain distance under the action of the twisting of the optical cable, and the torsion generated by the optical cable can be effectively relieved. After partial torsion is offset, the optical cable at the position of the detection shell starts to bend obliquely on the premise of ensuring that the optical cable is not damaged, the bent optical cable can push the lower shell 28 open, when the elastic force of the first spring 31 reaches the limit, the second support table 32 moves downwards, and the sensor 34 senses that the second support table 32 moves downwards and then controls the driving motor 40 to start to rotate reversely. The optical cable is damaged when bent beyond a certain degree, and the pushing of the optical cable is stopped when the bending limit is reached.

The reel 54 is also driven by the rotating shaft 58 after the driving motor 40 is rotated reversely, the blocking piece 56 inside the notch on the surface of the reel 54 cannot retract into the notch 55, and the rough surface 57 of the blocking piece 56 is contacted with the optical cable at the moment, so that a certain resistance is provided when the optical cable is pulled back. During the reverse rotation of the rotating shaft 58, the torsion spring inside the upper housing 27 increases the torsion force synchronously, when the torsion force reaches the limit position, the sleeve 48 starts to rotate under the driving of the torsion spring, the ratchet 49 is blocked by the blocking piece 51 during the rotation, and the rotation of the ratchet 49 needs to overcome the elastic force applied to the blocking piece 51 by the third spring 52. Because the torsion of torsional spring increases along the direction of optical cable propelling movement in proper order, the elasticity of third spring 52 increases along the direction of optical cable propelling movement in proper order, so the frictional force that the optical cable that is close to second stand pipe 24 position department received can be bigger in the in-process of pullback optical cable, the frictional force that the optical cable that is kept away from second stand pipe 24 position department received can be littleer, so in conveyer belt 15 pullback optical cable in-process, the optical cable that detects the inside bending of casing can be drawn into a straight line earlier and then twine on the pay-off roll again, pull out crooked optical cable by force in the pullback in-process, thereby can lead to the optical cable to receive the extrusion in bending process and destroy.

In the normal pulling process, the whistle 47 only needs to be rotated and clamped at the bottom of the first supporting platform 19, the sliding rod 44 moves downwards, and the blocking block 51 cannot block the rotation of the ratchet wheel 49, so that the effect of quickly recovering the optical cable can be achieved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides an optical cable tractor, includes quick-witted case (10), fixed bottom plate (12) that is provided with in quick-witted case (10) bottom, the fixed baffle (11) that is provided with in quick-witted case (10) one side, its characterized in that, baffle (11) are kept away from quick-witted case (10) one side and are fixed to be provided with two pairs of roller bearings (14), and is every right roller bearing (14) surface all overlaps has conveyer belt (15), has the clearance that can carry the optical cable between two conveyer belts (15), baffle (11) are kept away from quick-witted case (10) one side and are fixed to be provided with first supporting bench (19), one side that bottom plate (12) were kept away from to first supporting bench is fixed to be provided with the air supply device, first supporting bench (19) are close to bottom plate (12) one side and are provided with and detect the casing, the central point that detects the casing puts just to the clearance between two conveyer belts (15).

2. A cable pulling apparatus as claimed in claim 1, wherein a first fixing device (25) is fixedly arranged on a side of the conveyor belt (15) remote from the detection housing, a first guide tube (26) for guiding the cable into the gap between the two conveyor belts (15) is detachably mounted in the first fixing device (25), a second fixing device (22) is fixedly arranged on a side of the detection housing remote from the conveyor belt (15), a second guide tube (24) for guiding the cable into the underground passage is detachably mounted in the second fixing device (22), and an opening (23) is arranged at one end of the second guide tube (24) extending into the second fixing device (22).

3. An optical cable pulling machine according to claim 1, wherein a plurality of first rollers (41) are rotatably arranged at the bottom of the base plate (12), a plurality of mounting holes (39) are formed in one side of the base plate (12) close to the first fixing device (25), a detachably mounted feeding roller (36) is arranged on the base plate (12), a supporting plate (35) is fixedly arranged at the bottom of the feeding roller (36), a plurality of mounting rods (38) capable of being inserted into the mounting holes (39) are fixedly arranged on one side of the supporting plate (15) far away from the feeding roller (36), and a plurality of second rollers (37) are rotatably arranged on one side of the bottom of the supporting plate (15) far away from the mounting rods (38).

4. The optical cable hauling machine as claimed in claim 1, wherein a driving motor (40) is fixedly arranged inside the housing (10), an output end of the driving motor (40) is fixedly connected with a driving gear (17), one end of the driving gear (17) far away from the driving motor (40) is fixedly connected with a roller (14), one end of the roller (14) on the same side as the driving gear (17) extends into the housing (10) is fixedly provided with a driven gear (16), the driving gear (17) and the driven gear (16) are in meshing transmission, and an operation panel (13) is fixedly arranged on the top of the housing (10).

5. A cable pulling machine as claimed in claim 1, wherein the air supply device comprises an air pump (20), an air supply pipe (21) extends from one side of the air pump (20) close to the second fixing device (22), and an air outlet end of the air supply pipe (21) can penetrate into the opening (23) to supply air to the inside of the second guide pipe (24).

6. An optical cable pulling machine according to claim 1, wherein the detecting housing comprises an upper housing (27) and a lower housing (28), and is characterized in that the upper housing (27) is fixedly connected with a first supporting platform, a sliding box (18) is fixedly arranged at the bottom of the lower housing (28), a second supporting platform (32) is slidably arranged in the sliding box (18), the lower housing (28) is fixedly connected with the second supporting platform (32) through a connecting column (30), a sensor (34) is fixedly arranged at the bottom of the sliding box (18), a telescopic rod (33) is fixedly arranged at one side of the second supporting platform (32) far away from the connecting column (30), one end of the telescopic rod (33) far away from the second supporting platform (32) extends into the sensor (34), and a first spring (31) is connected between the sensor (34) and the second supporting platform (32).

7. An optical cable pulling machine according to claim 6, wherein a plurality of rotating shafts (58) are rotatably arranged in the upper casing (27) and the lower casing (28), the rotating shafts (58) in the upper casing (27) and the lower casing (28) are symmetrical to each other, a pair of opposite wheel discs (54) are slidably arranged in the middle of each rotating shaft (58), each two opposite wheel discs (54) are fixedly connected through a connecting barrel (59), a spacer (60) is fixedly arranged on the opposite side of each two opposite wheel discs (54), a second spring (61) is connected between each spacer (60) and each wheel disc (54), a plurality of notches (55) are formed on the opposite side of each two opposite wheel discs (54), a blocking piece (56) capable of providing resistance when the optical cable is pulled back is rotatably arranged in each notch (55), one side of each blocking piece (56) can be rotated back into the notch (55) when the optical cable is pushed, and a rough surface (57) is arranged on one side of each blocking piece (55) which can be rotated back into the notch (55).

8. A cable pulling machine according to claim 6, wherein a plurality of sleeves (48) are rotatably arranged on the upper housing (27) and the side close to the cabinet (10), one end of the rotating shaft (58) in each upper housing (27) extends into the sleeve (48), and a torsion spring is connected between one end of the rotating shaft (58) extending into the sleeve (48) and the sleeve.

9. An optical cable pulling machine as claimed in claim 8, wherein a ratchet (49) is fixedly arranged at one end of the sleeve (48) extending out of the upper housing (27), two opposite sliding rails (43) are fixedly arranged at one side of the upper housing (27) close to the chassis (10), bottoms of the two sliding rails (43) are connected through a connecting plate (42), a sliding rod (44) is slidably arranged inside the sliding rail (43), a plurality of sliding grooves (50) are formed at one side of the sliding rod (44) far away from the connecting plate (42), each sliding groove (50) is opposite to the ratchet (49), a blocking block (51) is slidably arranged inside each sliding groove (50), a raised head capable of reducing the rotation speed of the ratchet (49) is fixedly arranged at one end of the blocking block (51), a third spring (52) is connected between one end of each blocking block (51) far away from the raised head and the sliding rod (44), a plurality of fourth springs (46) are connected between the sliding rod (44) and the connecting plate (42), a connecting frame (45) is fixedly arranged at one end of the sliding rod (44) far away from the connecting plate (42), and a rotating clamping frame (47) is arranged at one end of the connecting plate (45).

10. A cable pulling machine according to claim 9, wherein the torsion force of the torsion spring increases in the direction of pushing the cable, and the elastic force of the third spring (52) increases in the direction of pushing the cable.

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