Power cable terminal traction device
Through the cooperation of the PLC controller and corresponding components, the automatic and precise pressure control and timely alarm functions of the cable traction device are realized, which solves the problems of instability and flexibility caused by the unstable clamping force in the existing technology, and improves the stability and safety of cable traction.
Patent Information
- Application Number
- CN202422651733.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing cable traction devices lack an automatic and precise pressure control and clamping structure, resulting in insufficient or excessive clamping force, which affects the stability and flexibility of use, and cannot provide timely alarm reminders for adjustment.
The system employs a PLC controller in conjunction with a rotary drive support traction assembly, an anti-wear pressure control and clamping positioning assembly, and a stop monitoring and alarm assembly to achieve automatic and precise pressure control and clamping of the cable, as well as timely alarm reminders. The pressure sensor detects the clamping force and automatically stops when the preset value is reached, while an industrial camera monitors the rotation status and triggers an alarm.
It achieves automatic and precise pressure control and tightening of cables, improving the stability and flexibility of traction work, avoiding slippage or cable damage caused by insufficient or excessive clamping force, and promptly alarming personnel to adjust the clamping force.
Smart Images

Figure CN223514498U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of power cable, concretely is a power cable terminal traction device. BACKGROUND
[0002] With the continuous expansion of the scale of Chinese electric power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding industry, the demand for electric wire and cable will also grow rapidly, because the internal of cable is metal wire, and the quality is larger, so the traction device needs to be used to assist traction work in the process of cable laying, so that the cable reaches another wire rack position from one wire rack.
[0003] For this, the utility model discloses a kind of cable traction device, including bottom plate, transmission device, baffle, conveying wheel, adjusting device, the transmission device, baffle, adjusting device are all set on bottom plate, and transmission device is set on the left side of baffle, adjusting device is set on the right side of baffle, the transmission device includes motor, speed reducer, the driving shaft of motor is connected speed reducer, the driving shaft of speed reducer penetrates baffle, conveying wheel is set in the driving shaft end of speed reducer, adjusting device is set in the directly below of conveying wheel;It can change the height where the groove is by the cylinder in adjusting device, so that the device can be adapted to different specifications of cable, the consistency of cable transmission speed is guaranteed.
[0004] The cable traction device disclosed in the above technology changes the height of the groove by the cylinder, tightens the cable, and rotates the conveying wheel driven by the motor to rotate and grind the cable, which can assist personnel to move the cable end easily, but the following deficiencies still exist when using:
[0005] 1, lack of structure for automatically and accurately controlling pressure and tightening during rotary grinding traction, cannot automatically control the tightening pressure, may exist the phenomenon that rotary grinding traction slips or the cable is damaged due to excessive tightening force, and the stability and completeness of use are not ideal;2, in the process of rotary grinding auxiliary traction, when the cable slips and stops traction conveying, it cannot timely alarm to remind personnel to adjust, and the use flexibility is not ideal;In view of this, the present application provides a kind of power cable terminal traction device to solve the above problems. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing a kind of power cable terminal traction device to solve the problems raised in the above background technology.
[0007] To achieve the above object, the utility model provides the following technical scheme: a power cable terminal traction device, including the base, the bottom four corners of base all rotatory installation have the universal wheel with lock, the top rear side of base is fixedly connected with L shape support board, the top of L shape support board is fixedly installed with PLC controller, the inside installation of L shape support board is used for to the power cable rotation drive traction rotation drive support traction assembly, rotation drive support traction assembly is electrically connected with PLC controller; rotation drive support traction assembly is used for to the power cable support, and is used for when the power cable is compacted to drive its transverse friction, to assist terminal traction work;
[0008] The inside wall of the top of the L-shaped support plate is embedded and fixed with an anti-wear pressure control and compacting positioning assembly for controlling and compacting the power cable, the anti-wear pressure control and compacting positioning assembly is electrically connected with the PLC controller, a stop monitoring and alarming assembly for monitoring the anti-wear pressure control and compacting positioning assembly is installed on the L-shaped support plate, and the stop monitoring and alarming assembly is electrically connected with the PLC controller; the anti-wear pressure control and compacting positioning assembly is used for controlled compacting of the power cable by the PLC controller, and the stop monitoring and alarming assembly is used for automatically alarming and reminding personnel to adjust the compacting force when the power cable does not move during the rotation drive process.
[0009] Preferably, the rotation drive support traction assembly comprises two rotating wheels rotatably installed on the inner wall of the rear side of the L-shaped support plate, two limiting rings for limiting and shielding the power cable from the front and rear sides are fixedly sleeved on the rotating wheels, a driving motor is fixedly installed on the rear side of the L-shaped support plate and fixedly connected with the rear side of the right rotating wheel, and the driving motor is electrically connected with the PLC controller.
[0010] Preferably, the anti-wear pressure control and compacting positioning assembly comprises an electric push rod embedded and fixed on the top inner wall of the L-shaped support plate, a pressure sensor is fixedly connected with the extending end of the electric push rod, a U-shaped plate is fixedly connected with the bottom of the pressure sensor, a lifting plate is arranged below the U-shaped plate, a pressure roller for compacting the power cable is rotatably installed on the two sides of the lifting plate, the pressure roller is located above the corresponding rotating wheel, a non-slip rubber sleeve is adhesively and sleeved on the outer side of the pressure roller and the outer side of the rotating wheel, four T-shaped guide rods are fixedly connected with the top of the lifting plate in a rectangular shape, the U-shaped plate is slidably sleeved on the four T-shaped guide rods, four springs are fixedly connected between the top of the lifting plate and the bottom of the U-shaped plate, the springs are movably sleeved on the corresponding T-shaped guide rods, and the electric push rod and the pressure sensor are electrically connected with the PLC controller.
[0011] Preferably, the stop monitoring and alarming assembly comprises an industrial camera fixedly installed on the top inner wall of the L-shaped support plate, an audible and visual alarm is fixedly installed on the top right side of the L-shaped support plate, and the audible and visual alarm and the industrial camera are electrically connected with the PLC controller; the industrial camera is located above the right pressure roller and is used for monitoring the rotation state of the pressure roller.
[0012] Preferably, the top left side of the L-shaped support plate is embedded with a lithium battery, and the driving motor, electric push rod, industrial camera, PLC controller and audible and visual alarm are electrically connected with the lithium battery.
[0013] Preferably, two threaded holes are formed in the top of the base, and a T-shaped anchor rod is threadedly sleeved in the threaded hole.
[0014] Preferably, grooves are formed in the two sides of the lifting plate, and a circular hole is formed in the front and rear inner walls of the groove; a first bearing is fixedly sleeved in the circular hole; and a rotating shaft is fixedly connected to the front and rear sides of the compression wheel.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] 1. The PLC controller, base, L-shaped support plate, anti-abrasion pressure control compression positioning assembly and rotary drive supporting traction assembly are matched to detect the extrusion degree when the power cable is compressed and automatically stop when the preset pressure is reached, so that the power cable can be automatically and accurately controlled and compressed, and the power cable can be rotary ground traction after compression, the extrusion pressure can be automatically and accurately controlled, the stability of the auxiliary traction work is improved, the phenomenon that the power cable is damaged due to small extrusion force or large extrusion force is reduced, and the use stability and completeness are improved.
[0017] 2. The PLC controller, anti-abrasion pressure control compression positioning assembly and stop monitoring alarm assembly are matched to detect the running state of the auxiliary traction work, and timely alarm personnel to adjust when the power cable is too heavy and the rotary grinding stops traction, so that personnel can increase the appropriate compression pressure by the PLC controller to appropriately increase the rotary grinding degree within the safety range, further improve the rotary grinding auxiliary traction stability, avoid the phenomenon that personnel pull the end due to the stop of the auxiliary traction, and improve the use flexibility.
[0018] The utility model is provided with a series of structures, which can automatically and accurately control and compress the power cable and rotary ground traction, automatically and accurately control the extrusion pressure, improve the stability of the auxiliary traction work, reduce the phenomenon that the power cable is damaged due to small extrusion force or large extrusion force, improve the use stability and completeness, timely alarm personnel to adjust when the power cable is too heavy and the rotary grinding stops traction, so that personnel can increase the appropriate compression pressure by the PLC controller to appropriately increase the rotary grinding degree within the safety range, further improve the use stability and flexibility. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A structure schematic view of a power cable terminal traction device is provided in the utility model;
[0020] Figure 2 For Figure 1 A structure schematic view of a cross section;
[0021] Figure 3 For Figure 1 A structure schematic view of a back view.
[0022] In the drawing: 1, base; 2, L-shaped support plate; 3, PLC controller; 4, rotating wheel; 401, limiting ring; 402, driving motor; 5, electric push rod; 501, pressure sensor; 502, U-shaped plate; 503, T-shaped guide rod; 504, spring; 505, lifting plate; 506, compression wheel; 6, antiskid rubber sleeve; 7, audible and visual alarm; 701, industrial camera; 8, T-shaped anchor rod. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0024] As Figures 1 to 3 Indicated, a kind of power cable terminal traction device is provided in the embodiment, including base 1, the bottom four corners of base 1 are all rotationally installed with universal wheel with lock, the top rear side of base 1 is fixedly connected with L-shaped support plate 2, the top of L-shaped support plate 2 is fixedly installed with PLC controller 3, L-shaped support plate 2 is installed with the rotating drive support traction assembly for rotating drive traction of power cable, rotating drive support traction assembly is electrically connected with PLC controller 3, two threaded holes are set in the top of base 1, T-shaped anchor rod 8 is threadedly sleeved in threaded hole, the T-shaped anchor rod 8 for rotating drilling into ground is set to carry out the stable work of entire device, or for installation on vehicle when being used and fixed with vehicle;Rotating drive support traction assembly is used to support power cable, and is used to drive friction when power cable is compressed to move transversely, to assist terminal traction work;
[0025] The inner wall of the top of the L-shaped support plate 2 is embedded with an anti-abrasion and pressure control positioning assembly for pressure control and compression of the power cable. The anti-abrasion and pressure control positioning assembly is electrically connected with the PLC controller 3. The L-shaped support plate 2 is installed with a stop monitoring and alarm assembly for monitoring the anti-abrasion and pressure control positioning assembly. The stop monitoring and alarm assembly is electrically connected with the PLC controller 3. The anti-abrasion and pressure control positioning assembly is used to control the pressure control and compression of the power cable under the control of the PLC controller 3. The stop monitoring and alarm assembly is used to automatically alarm and remind the personnel to adjust the compression force when the power cable does not move during the rotation driving and traction process.
[0026] Specifically, the rotation driving, supporting and traction assembly includes two rotating wheels 4 rotatably installed on the rear inner wall of the L-shaped support plate 2. Two circular through holes are formed in the rear inner wall of the L-shaped support plate 2. A second bearing is fixedly sleeved in each circular through hole. The second bearing is fixedly sleeved with the outer side of the corresponding rotating wheel 4, thereby achieving the effect of rotatably installing the rotating wheel 4. Two limiting rings 401 for front and rear side shielding and limiting of the power cable are fixedly sleeved on the rotating wheel 4. A driving motor 402 is fixedly installed on the rear side of the L-shaped support plate 2 and fixedly connected with the rear side of the rotating wheel 4 on the right side. The driving motor 402 is electrically connected with the PLC controller 3. The rotating wheel 4, the limiting ring 401 and the driving motor 402 are cooperated to support the power cable by the two rotating wheels 4, to shield and limit the power cable on the front and rear sides by the two limiting rings 401 on each rotating wheel 4 to prevent the power cable from falling off, and to drive the rotating wheel 4 on the right side to rotate by the driving motor 402. When the power cable is compressed, the rotating wheel 4 is used to rotate and grind the power cable to move horizontally, thereby achieving auxiliary traction work.
[0027] Further, the anti-abrasion pressure control and positioning assembly comprises an electric push rod 5 embedded and fixed on the inner wall of the top of the L-shaped support plate 2, the extending end of the electric push rod 5 is fixedly connected with a pressure sensor 501, the bottom of the pressure sensor 501 is fixedly connected with a U-shaped plate 502, a lifting plate 505 is arranged below the U-shaped plate 502, rotating plates 506 for pressing the power cable are rotatably installed on the two sides of the lifting plate 505, wherein the two sides of the lifting plate 505 are both provided with recesses with open top and bottom, circular holes are formed in the front and rear inner walls of the recesses, first bearings are fixedly sleeved in the circular holes, rotating shafts are fixedly connected with the front and rear sides of the rotating plates 506, the inner ring of the first bearing is fixedly sleeved with the outer side of the corresponding rotating shaft, the first bearing and the rotating shaft are arranged to rotatably install the corresponding rotating plate 506, the rotating plate 506 is located above the corresponding rotating wheel 4, anti-skid rubber sleeves 6 are adhesively sleeved with the outer sides of the rotating plate 506 and the rotating wheel 4, four T-shaped guide rods 503 are fixedly connected with the top of the lifting plate 505 in a rectangular shape, the U-shaped plate 502 is slidably sleeved on the four T-shaped guide rods 503, wherein four vertical guide holes are formed in the top of the U-shaped plate 502 in a rectangular shape, the vertical guide holes are respectively slidably sleeved with the outer sides of the corresponding T-shaped guide rods 503, the T-shaped guide rods 503 are vertically guided, four springs 504 are fixedly connected between the top of the lifting plate 505 and the bottom of the U-shaped plate 502, the springs 504 are movably sleeved on the corresponding T-shaped guide rods 503, and the electric push rod 5 and the pressure sensor 501 are electrically connected with the PLC controller 3.The set electric push rod 5, pressure sensor 501, U-shaped plate 502, lifting plate 505, T-shaped guide rod 503 and spring 504 cooperate, the closing pressure value of the electric push rod 5 is pre-set by the PLC controller 3, the electric push rod 5 is started in a positive direction to drive the U-shaped plate 502 to move down through the pressure sensor 501, the U-shaped plate 502 drives the lifting plate 505 to move down through the four springs 504, the lifting plate 505 drives the two compression wheels 506 to extrude the power cable downward, at this time the continuously downward moving U-shaped plate 502 slides downward on the four T-shaped guide rods 503 and compresses the four springs 504, the four springs 504 in the compression state are used to tighten the two compression wheels 506 downward through the lifting plate 505, the power cable is extruded, the pressure sensor 501 detects the extrusion force of the electric push rod 5 when extruded and transmits the pressure value to the PLC controller 3, when the pre-set pressure value is reached, the PLC controller 3 controls the electric push rod 5 to automatically close, the effect of automatically controlling and extruding the power cable is realized, the power cable can be stably extruded on the runner 4, to facilitate the stable rotary grinding traction drive of the runner 4, in addition, the anti-skid rubber sleeve 6 arranged outside the compression wheel 506 and the runner 4 can further enhance the rotary grinding drive to generate friction force, further improve the rotary grinding traction stability, when the power cable is pulled and moved horizontally, it will be rubbed to drive the two compression wheels 506 to rotate, the rotatable compression wheel 506 can reduce the horizontal friction force on the power cable while ensuring extrusion, to avoid affecting the horizontal movement effect of the power cable.
[0028] Further, the stop monitoring alarm assembly includes an industrial camera 701 fixedly installed on the inner wall of the top of the L-shaped support plate 2, and an audible and visual alarm 7 is fixedly installed on the right side of the top of the L-shaped support plate 2, and the industrial camera 701 and the audible and visual alarm 7 are electrically connected with the PLC controller 3, the industrial camera 701 is located above the right side of the compression wheel 506 and is used for monitoring the rotation state of the compression wheel 506, and a lithium battery is embedded and fixed on the left side of the top of the L-shaped support plate 2, and the driving motor 402, the electric push rod 5, the industrial camera 701, the PLC controller 3 and the audible and visual alarm 7 are electrically connected with the lithium battery; the industrial camera 701 and the audible and visual alarm 7 are arranged in cooperation, and the PLC controller 3 is used for pre-setting the audible and visual alarm 7 to be turned on when the right side of the compression wheel 506 stops rotating during the rotary grinding traction and conveying, and the industrial camera 701 dynamically monitors the compression wheel 506 during the rotary grinding conveying, and when the power cable stops conveying due to insufficient compression friction caused by excessive weight and other factors, the friction driving of the right side of the compression wheel 506 is stopped, at this time, the industrial camera 701 monitors the stop of the rotation of the right side of the compression wheel 506 and transmits a corresponding signal to the PLC controller 3, and the PLC controller 3 controls the audible and visual alarm 7 to be turned on, thereby achieving the effect of timely alarm and reminding personnel when the rotary grinding traction fails, facilitating personnel to set a suitable compression pressure, enhancing the rotary grinding force, avoiding the phenomenon that personnel pulls the end with great effort due to the stop of auxiliary conveying traction, and further improving the use effect.
[0029] The use method of the embodiment is as follows: during use, the closing pressure value of the electric push rod 5 is pre-set by the PLC controller 3 according to the compression requirements of power cables with different materials, the power cable to be traction-conveyed is placed on the top of the two rotating wheels 4, the electric push rod 5 is started in a forward direction to drive the U-shaped plate 502 to move downward through the pressure sensor 501, the U-shaped plate 502 drives the lifting plate 505 to move downward through the four springs 504, the lifting plate 505 drives the two compression wheels 506 to press the power cable downward, at this time, the U-shaped plate 502 continues to move downward and slides downward on the four T-shaped guide rods 503, and the four springs 504 are compressed, the four springs 504 in the compressed state are used to tighten the two compression wheels 506 downward through the lifting plate 505, thereby achieving the compression of the power cable, the pressure sensor 501 detects the pressing force applied by the electric push rod 5 during compression and transmits the pressure value to the PLC controller 3, when the pre-set pressure value is reached, the PLC controller 3 controls the electric push rod 5 to automatically close, thereby achieving the effect of automatic pressure control and compression of the power cable, so that the power cable can be stably pressed on the rotating wheel 4, and the power cable can be automatically and accurately controlled and pressed by detecting the pressing force and automatically closing when the pressure value is reached, the pressing force can be automatically controlled, the phenomenon that the power cable is skidded or damaged due to small pressing force or large pressing force is reduced, and the use stability and completeness are improved.
[0030] When auxiliary traction is performed, the driving motor 402 is started by the PLC controller 3, and the sound-light alarm 7 is turned on when the right pressing wheel 506 is set to stop rotating by the PLC controller 3 during rotary grinding traction and conveying, and the driving motor 402 drives the rotating wheel 4 to rotate, and when the power cable is pressed, the rotary grinding driving power cable transverse movement is driven by the rotating rotating wheel 4 and the corresponding anti-skid rubber sleeve 6, and the auxiliary traction work is realized, and when rotary grinding traction and conveying are performed, the power cable is transversely moved to drive the two pressing wheels 506 to rotate, and the pressing wheels 506 can be rotated to ensure that the power cable is pressed and the transverse friction force is reduced, so as to avoid affecting the transverse movement effect of the power cable, and because the right pressing wheel 506 rotates, the industrial camera 701 dynamically monitors the pressing wheel 506, and when the power cable is stopped due to insufficient pressing friction caused by excessive weight and other factors, the right pressing wheel 506 is stopped by friction driving, and the industrial camera 701 monitors the right pressing wheel 506 to stop rotating and transmits a corresponding signal to the PLC controller 3, and the PLC controller 3 controls the sound-light alarm 7 to be turned on, so as to realize the effect of timely alarm and prompting personnel to adjust when rotary grinding traction is not performed, and the personnel can conveniently increase the adjustment setting of the appropriate pressing pressure through the PLC controller 3, so as to appropriately enhance the rotary grinding force within the safe range, further improve the rotary grinding auxiliary traction stability, avoid the phenomenon that the personnel pulls the end part with great effort due to the stop of auxiliary conveying traction, and improve the use flexibility.
[0031] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A power cable terminal traction device, comprising a base (1), wherein each of the four bottom corners of the base (1) is rotatably mounted with a lockable universal wheel, characterized in that: An L-shaped support plate (2) is fixedly connected to the top rear side of the base (1). A PLC controller (3) is fixedly installed on the top of the L-shaped support plate (2). A rotary drive support traction assembly for rotary drive traction of power cables is installed inside the L-shaped support plate (2). The rotary drive support traction assembly is electrically connected to the PLC controller (3). The L-shaped support plate (2) is fitted with an anti-wear pressure control and positioning component for controlling and pressing the power cable. The anti-wear pressure control and positioning component is electrically connected to the PLC controller (3). The L-shaped support plate (2) is equipped with a stop monitoring alarm component for monitoring the anti-wear pressure control and positioning component. The stop monitoring alarm component is electrically connected to the PLC controller (3).
2. The power cable terminal traction device according to claim 1, characterized in that: The rotary drive support traction assembly includes two rotating wheels (4) rotatably mounted on the inner wall of the rear side of the L-shaped support plate (2). Two limiting rings (401) are fixedly sleeved on the rotating wheels (4) for limiting the obstruction of the power cable on the front and rear sides respectively. A drive motor (402) with an output shaft fixedly mounted on the rear side of the L-shaped support plate (2) and fixedly connected to the rear side of the rotating wheel (4) on the right side is fixedly mounted. The drive motor (402) is electrically connected to the PLC controller (3).
3. The power cable terminal traction device according to claim 2, characterized in that: The anti-wear pressure control clamping and positioning assembly includes an electric push rod (5) embedded and fixed on the inner wall of the top of the L-shaped support plate (2). A pressure sensor (501) is fixedly connected to the extended end of the electric push rod (5). A U-shaped plate (502) is fixedly connected to the bottom of the pressure sensor (501). A lifting plate (505) is provided below the U-shaped plate (502). Pressure rollers (506) for clamping power cables are rotatably installed on both sides of the lifting plate (505). The pressure rollers (506) are located above the corresponding rotating rollers (4). The outer side of the plate and the outer side of the rotating wheel (4) are both covered with anti-slip rubber sleeves (6). The top of the lifting plate (505) is fixedly connected with four T-shaped guide rods (503) in a rectangular shape. The U-shaped plate (502) is slidably sleeved on the four T-shaped guide rods (503). Four springs (504) are fixedly connected between the top of the lifting plate (505) and the bottom of the U-shaped plate (502). The springs (504) are movably sleeved on the corresponding T-shaped guide rods (503). The electric push rod (5) and the pressure sensor (501) are electrically connected to the PLC controller (3).
4. A power cable terminal traction device according to claim 3, characterized in that: The stop monitoring alarm component includes an industrial camera (701) fixedly installed on the inner wall of the top of the L-shaped support plate (2). An audible and visual alarm (7) is fixedly installed on the top right side of the L-shaped support plate (2). Both the audible and visual alarm (7) and the industrial camera (701) are electrically connected to the PLC controller (3). The industrial camera (701) is located above the pressure roller (506) on the right side and is used to monitor its rotation status.
5. A power cable terminal pulling device according to claim 4, characterized in that: A lithium battery is embedded and fixed on the top left side of the L-shaped support plate (2). The drive motor (402), electric push rod (5), industrial camera (701), PLC controller (3) and sound and light alarm (7) are all electrically connected to the lithium battery.
6. A power cable terminal traction device according to claim 1, characterized in that: Two threaded holes are opened on both sides of the top of the base (1), and T-shaped anchor rods (8) are threaded in the threaded holes.
7. A power cable terminal traction device according to claim 3, characterized in that: The lifting plate (505) has grooves with openings at the top and bottom on both sides. The inner walls of the front and rear sides of the grooves have round holes. A first bearing is fixedly fitted inside the round hole. The front and rear sides of the pressure roller (506) are fixedly connected to the rotating shaft. The inner ring of the first bearing is fixedly fitted to the outer side of the corresponding rotating shaft.
Citation Information
Patent Citations
Cable draw gear
CN206040305U