Pay-off device for wire and cable construction

Abstract

The utility model relates to the field of wires and cables, in particular to a pay-off device for wire and cable construction, which is characterized in that two pay-off rollers and a wire coil at the front end of a cart are coaxially and fixedly provided with a locking gear, the rear end of a support frame is rotatably mounted on the cart, the rotating axis of the support frame extends transversely, and the bottom of the support frame is provided with a rack matched with the locking gear; two parallel guide rollers are rotatably mounted at the front end of the supporting frame, a cable released by the cable coil sequentially passes through the two guide rollers and the two pay-off rollers, and when the cable is kept in a straightened state between the cable coil and the two guide rollers, the rack is separated from the locking gear; after paying off is stopped, the front end of the supporting frame is pulled through the tension spring to rotate downwards, the guide roller is made to tension the released redundant cable downwards, and therefore the cable is prevented from being disordered; and the front end of the supporting frame rotates downwards to enable the rack to be meshed with the locking gear again, and the wire coil is locked, so that the wire coil is prevented from releasing more cables.

Description

Technical Field

[0001] The utility model relates to the field of wire and cable, and particularly relates to a wire and cable construction wire releasing device. Background Art

[0002] As a common power transmission tool, wire and cable is used more and more frequently. Before use, the wire and cable is generally wound on a wire reel. When in use, the wire reel is installed on the rotating shaft of the support to release the wire.

[0003] The utility model patent with the application number CN202320272772.5 discloses a wire and cable wire releasing device. A transmission component is arranged on the top of the bottom plate, and an adjusting component is arranged on the other side of the top of the bottom plate. The transmission component includes a support plate. A motor is installed on one side of the support plate. The motor is connected to the main rotating rod. The lower rotating roller is sleeved on the outside of the main rotating rod. A main gear is sleeved on the outside of the main rotating rod and on one side of the lower rotating roller. The upper rotating roller is sleeved on the outside of the auxiliary rotating rod. An auxiliary gear is sleeved on the outside of the auxiliary rotating rod and on one side of the upper rotating roller. The auxiliary gear is meshed with the main gear. When releasing the wire and cable, the motor drives the upper rotating roller and the lower rotating roller to rotate forward and backward relative to each other, so as to squeeze and drive the cable to move. When it is necessary to stop working, only need to turn off the motor to fix the cable.

[0004] However, after the upper rotating roller and the lower rotating roller of the above wire releasing device stop rotating, the wire reel will still continue to rotate under the action of inertia, resulting in too much cable falling off the wire reel and causing the cable to be messy. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a wire and cable construction wire releasing device, which can avoid excessive cable falling off when stopping wire releasing, so as to solve the problems in the prior art.

[0006] To solve the above technical problem, the technical solution of the utility model is: a wire and cable construction wire releasing device, including a trolley. Two wire releasing rollers are arranged in parallel at the front end of the trolley. The two wire releasing rollers are driven by a motor and rotate towards each other. A wire reel is rotatably installed on the trolley behind the two wire releasing rollers. The axis of the wire reel extends horizontally. A locking gear is coaxially and fixedly installed on the wire reel. A support frame is arranged on the trolley. The rear end of the support frame is rotatably installed on the trolley and the axis of rotation of the support frame extends horizontally. A rack matching with the locking gear is arranged at the bottom of the support frame. The front end of the support frame extends between the wire reel and the two wire releasing rollers. Two guide rollers are rotatably installed in parallel at the front end of the support frame. The cable released from the wire reel passes through between the two guide rollers and between the two wire releasing rollers in sequence. When the cable is in a straightened state between the wire reel and the two guide rollers, the rack disengages from the locking gear.

[0007] As a further improvement, a tension spring for pulling the rack to engage with the locking gear is provided on the trolley.

[0008] As a further improvement, the wire reel includes a hollow shaft cylinder, and two baffles are fixedly installed in parallel along the length direction of the shaft cylinder; the locking gear is fixedly installed on the shaft cylinder outside the two baffles.

[0009] As a further improvement, a support is fixedly installed on the trolley, a laterally extending shaft rod is fixedly installed on one side of the support, and the shaft cylinder is rotatably sleeved outside the shaft rod.

[0010] As a further improvement, two limiting plates for preventing the shaft cylinder from moving axially are provided on the shaft rod. The two limiting plates are a fixed plate and a movable plate respectively. The fixed plate is welded on the shaft rod. An installation sleeve matching the shaft rod is provided on the movable plate. The installation sleeve is sleeved outside the shaft rod and is fixed to the shaft rod by bolts.

[0011] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0012] After the wire laying of the present application stops, the front end of the support frame is pulled down to rotate by the tension spring, so that the guide roller tensions the released redundant cable downward, thereby avoiding the cable from being messy; and the downward rotation of the front end of the support frame makes the rack engage with the locking gear again, and the wire reel is locked, thereby avoiding the wire reel from releasing more cables. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the wire reel in an embodiment of the present utility model;

[0016] Figure 3 is a schematic diagram when the wire reel in an embodiment of the present utility model is locked;

[0017] Figure 4 is a schematic diagram when the locking of the wire reel in an embodiment of the present utility model is released.

[0018] In the figure: 1 - trolley; 2 - bearing plate; 3 - moving wheel; 4 - push-pull bracket; 5 - push-pull handle; 6 - vertical plate; 7 - wire pay-off reel; 8 - motor; 9 - spur gear; 10 - wire reel; 11 - shaft cylinder; 12 - baffle; 13 - support; 14 - shaft rod; 15 - fixing plate; 16 - movable plate; 17 - mounting sleeve; 18 - support frame; 19 - swing arm; 20 - rotating pipe; 21 - rotating shaft; 22 - rack; 23 - guide roller; 24 - tension spring; 25 - first hanging plate; 26 - second hanging plate; 27 - locking gear; 28 - cable. Detailed implementation manner

[0019] As Figures 1 to 4 shown, a wire and cable construction wire pay-off device includes a trolley 1. The trolley 1 is provided with a bearing plate 2. Moving wheels 3 are respectively installed at the four corners of the bottom of the bearing plate 2. At the rear end of the top of the bearing plate 2, two left-right oppositely arranged push-pull brackets 4 are fixedly installed by bolts. The upper ends of the push-pull brackets 4 extend obliquely backward. A push-pull handle 5 is fixedly installed between the upper ends of the two push-pull brackets 4, so as to facilitate moving the device.

[0020] Two vertical plates 6 are fixedly installed by bolts at the front end of the top of the bearing plate 2. Between the upper ends of the two vertical plates 6, two parallel wire pay-off reels 7 are provided. The wire pay-off reels 7 extend horizontally. The wire pay-off reel 7 includes a driven roller located above and a driving roller located below. The two ends of the driven roller are respectively rotationally installed on the corresponding vertical plates 6 through bearings. A motor 8 is installed on the outer side of the left vertical plate 6 by bolts. The left end of the driving roller is connected to the rotating shaft of the motor 8 through a coupling, and the right end is rotationally installed on the right vertical plate 6 through a bearing. The right ends of the two wire pay-off reels 7 both extend to the outside of the vertical plate 6 and are fixedly installed with spur gears 9. The two spur gears 9 are meshed with each other. When paying off the wire, the motor 8 drives the two wire pay-off reels 7 to rotate towards each other, and the cable 28 is released through the wire reel 10 by pulling the cable by the two wire pay-off reels 7.

[0021] A wire reel 10 is rotationally installed on the trolley 1 behind the two wire pay-off reels 7. The axis of the wire reel 10 extends horizontally. As Figure 2As shown in the figure, specifically, the wire reel 10 includes a hollow shaft cylinder 11. Two baffles 12 are fixedly installed side by side on the shaft cylinder 11 along its length direction. The cable is wound around the shaft cylinder 11 between the two baffles 12. On the top right side of the bearing plate 2 behind the two wire pay-off rollers 7, a support 13 is fixedly installed by bolts. On the left side of the support 13, a laterally extending shaft rod 14 is fixedly installed by bolts. The shaft cylinder 11 is rotatably sleeved on the outside of the shaft rod 14. In addition, there are two limit plates on the shaft rod for preventing the shaft cylinder 11 from moving axially. The two limit plates are respectively a fixed plate 15 and a movable plate 16. The fixed plate 15 is welded to the right end of the shaft rod 14. An installation sleeve 17 matching the shaft rod 14 is integrally formed on the movable plate 16. The installation sleeve 17 is sleeved on the outside of the left end of the shaft rod 14 and the installation sleeve 17 is fixed to the shaft rod 14 by bolts.

[0022] When installing the wire reel 10, first remove the movable plate 16 from the shaft rod 14, then sleeve the shaft cylinder 11 on the wire reel 10 onto the shaft rod 14, and then re-sleeve the installation sleeve 17 on the movable plate 16 onto the shaft rod 14 and fix it with bolts. By using the movable plate 16 and the fixed plate 15 to block the left and right ends of the shaft cylinder 11 respectively, the shaft cylinder 11 can be prevented from moving axially. Conversely, after removing the movable plate 16, the wire reel 10 can be removed from the shaft rod 14, and the disassembly and assembly of the wire reel 10 are very convenient.

[0023] Locking gears 27 are coaxially and fixedly installed at both ends of the shaft cylinder 11 respectively. The baffle 12 is located between the two locking gears 27. On the cart, there is a support frame 18. The support frame 18 includes two swing arms 19 arranged opposite to each other left and right. The rear ends of the two swing arms 19 are welded to the same rotating pipe 20. A laterally extending rotating shaft 21 is embedded between the two push-pull supports 4 below the push-pull handle 5. The rotating pipe 20 is rotatably sleeved on the outside of the rotating shaft 21, and the length of the rotating pipe 20 is the same as the interval between the two push-pull supports 4, which can prevent the rotating pipe 20 from moving axially on the rotating shaft 21. A rack 22 matching the locking gear 27 is integrally formed at the bottom of the swing arm 19. The front end of the swing arm 19 extends between the wire reel 10 and the two wire pay-off rollers 7. Two guide rollers 23 arranged in parallel are rotatably installed between the front ends of the two swing arms 19. The guide rollers 23 extend laterally. The cable 28 released from the wire reel 10 passes through between the two guide rollers 23 and between the two wire pay-off rollers 7 in sequence. When the cable 28 is kept in a straight state between the wire reel 10 and the two guide rollers 23, the rack 22 disengages from the locking gear 27.

[0024] In order to lock the wire reel 10 efficiently, a tension spring 24 for pulling the rack 22 to engage with the locking gear 27 is provided on the cart 1. Specifically, a first hanging plate 25 is welded to the bottom wall of the swing arm 19 behind the rack 22. A second hanging plate 26 is fixedly installed on the top of the bearing plate 2 behind the wire reel 10 by bolts. Hanging holes are respectively provided on the first hanging plate 25 and the second hanging plate 26. The two ends of the tension spring 24 are respectively hung on the first hanging plate 25 and the second hanging plate 26.

[0025] When there is no external force and the motor 8 is in the off state, as Figure 1 and Figure 3 shown, the tension spring 24 gives a downward pulling force to the support frame 18. At the same time, with the action of gravity, the rack 22 is downwardly placed on the corresponding locking gear 27. The rack 22 and the locking gear 27 are engaged to limit the rotation of the shaft cylinder 11 around the shaft rod 14, and the wire reel 10 is in a locked state; at this time, the cable 28 released by the warp reel 10 passes downward through between the two guide rollers 23 and then upward through between the two wire pay-off rollers 7.

[0026] When paying off the cable, the motor 8 drives the two wire pay-off rollers 7 to rotate towards each other, and pulls the cable 28 through the two wire pay-off rollers 7; since the wire reel 10 is in a locked state, when the wire pay-off rollers 7 first pull the cable 28, it will not drive the wire reel 10 to release more cable 28. Instead, it will first straighten the cable 28 between the wire reel 10 and the two guide rollers 23; while the cable 28 between the wire reel 10 and the two guide rollers 23 is being straightened, as Figure 4 shown, the cable 28 acts on the guide roller 23 and drives the front end of the support frame 18 to rotate upward. Furthermore, the support frame 18 drives the rack 22 to disengage from the locking gear 27 upward to release the lock on the wire reel 10, so that more cable 28 can be smoothly released from the wire reel 10.

[0027] When the motor 8 is turned off and the cable pay-off stops, before the rack 22 engages with the locking gear 27 downward, the wire reel 10 will continue to rotate under the action of inertia and release a certain length of cable 28. At the same time, the tension spring 24 will pull the front end of the support frame 18 to rotate downward again, and through the guide roller 23, the released excess cable 28 will be tensioned downward, thus avoiding the cable 28 from being messy; and the downward rotation of the front end of the support frame 18 causes the rack 22 to engage with the locking gear 27 again, as Figure 3 shown, the wire reel 10 is locked again, thus avoiding the wire reel 10 from releasing more cable 28.

[0028] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire-laying device for wire and cable construction, characterized in that: The gear train is a gear that is coupled to the gear train and is configured to move the two gear trains together, and the gear train is coupled to the gear train so that the two gear trains can be moved in parallel without interfering with each other.

2. A wire-and-cable laying device for construction as claimed in claim 1, characterized in that: The trolley is provided with a tension spring for pulling the rack to engage with the locking gear.

3. A wire-and-cable laying device for construction as claimed in claim 1, characterized in that: The wire drum comprises a hollow shaft cylinder, on which two baffles are fixedly mounted in parallel along the length direction thereof; the locking gear is fixedly mounted on the shaft cylinder located outside the two baffles.

4. A wire-laying device for wire and cable construction as claimed in claim 3, characterized in that: A support is fixedly installed on the trolley, a laterally extending shaft rod is fixedly installed on one side of the support, and the shaft cylinder is rotatably sleeved on the outer side of the shaft rod.

5. A wire-laying device for wire and cable construction as claimed in claim 4, characterized in that: The shaft rod is provided with two limit plates for preventing the shaft tube from moving, the two limit plates are respectively a fixed plate and a movable plate, the fixed plate is welded to the shaft rod, the movable plate is provided with a mounting sleeve matching the shaft rod, the mounting sleeve is arranged on the outside of the shaft rod and the mounting sleeve is fixed to the shaft rod by bolts.

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