Wire and cable take-up and pay-off lifting device

Abstract

The utility model discloses an electric wire and cable take-up and pay-off lifting device, and relates to the technical field of electric wire and cable lifting mechanisms. In order to solve the problems that a probe or a proximity switch is damaged due to unreasonable detection point location of an existing lifting mechanism, so that a transmission chain is damaged or a motor electric appliance is burnt out due to mechanical locking, the following technical scheme is provided: the lifting mechanism comprises a support frame, a lifting assembly, an anti-locking mechanism and a drum assembly which are connected in sequence; the anti-locking mechanism comprises a descending induction piece arranged on one side of the bottom of the lifting assembly, a transmission buffer sleeve connected with the bottom of the lifting assembly and the bottom of the descending induction piece and a descending induction probe arranged on the top of the disc assembly, and a descending induction piece moving groove is formed in the side wall of the transmission buffer sleeve. And the descending induction piece moves up and down in the descending induction piece moving groove. According to the utility model, the safety and the efficiency of operation are improved, the maintenance cost is reduced, and the reliability and the application range of the system are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cable lifting mechanisms, in particular to a lifting device for retracting and releasing electric wires and cables. Background Art

[0002] In the wire and cable manufacturing industry, the wire retracting and releasing lifting mechanism is one of the key equipment to ensure the smooth progress of the production process. This type of mechanism is responsible for the up and down transportation of cables, and its stability and reliability are directly related to production efficiency and safety.

[0003] However, there are several technical defects in the traditional retractable wire lifting mechanism, which have become bottlenecks that restrict industrial upgrading and safe production. First, some existing lifting mechanism designs lack effective detection devices. This means that during the cable winding or releasing process, once an abnormality occurs, such as cable disorder, overtightening or mechanical interference, the system cannot identify and take measures in time, which can easily cause the mechanical structure to get stuck, which will not only interrupt the production process, but also cause overload due to continuous motor drive, and eventually burn the motor, causing significant economic losses and production delays. Secondly, even if some lifting mechanisms are equipped with detection devices, the selection of detection points is often unsatisfactory due to unreasonable design. For example, the probe or proximity switch is set in a position that is susceptible to physical impact. Frequent cable collisions will cause these sensitive components to wear out quickly or even be damaged, thereby losing the ability to monitor critical conditions. This design defect can also cause mechanical jamming, further damage the transmission chain, and in severe cases, threaten the safe operation of the motor and other electrical components. Utility Model Content

[0004] The utility model aims to provide a wire and cable retracting and releasing lifting device to solve the problem that the existing lifting mechanism has unreasonable detection points, causing damage to the probe or proximity switch, and thus mechanical jamming, damaging the transmission chain or burning out the motor and electrical appliances.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A wire and cable reeling and winding lifting device comprises: a supporting frame, a lifting assembly, an anti-jamming mechanism and a reel assembly connected in sequence; the anti-jamming mechanism comprises a descending induction member arranged on one side of the bottom of the lifting assembly, a transmission buffer sleeve respectively connected to the bottom of the lifting assembly and the bottom of the descending induction member, and a descending induction probe arranged on the top of the reel assembly, a side wall of the transmission buffer sleeve is provided with a descending induction member moving groove, and the descending induction member moves up and down in the descending induction member moving groove.

[0007] Furthermore, the lifting assembly includes a lifting motor arranged at the upper end of the support frame, a transmission mechanism connected to the transmission end of the lifting motor, and a lifting screw connected to the end of the transmission mechanism, and the transmission buffer sleeve is sleeved at the bottom of the lifting screw.

[0008] Furthermore, a shaft synchronous transmission keyway is provided at the bottom of the lifting screw rod, and a hole synchronous transmission keyway which is adapted to the shape of the shaft synchronous transmission keyway is provided inside the transmission buffer sleeve.

[0009] Furthermore, the transmission mechanism includes a worm and a turbine which are sequentially connected to the transmission end thereof, and the turbine is sleeved on the lifting screw.

[0010] Furthermore, a support platform is provided on the inner wall of the support frame, and the bottom of the turbine is arranged on the support platform.

[0011] Furthermore, a bearing sleeve is provided between the turbine and the support platform, and a support bearing is provided inside the bearing sleeve.

[0012] Furthermore, the reel assembly includes a reel assembly mechanism connected to the bottom of the transmission buffer sleeve and a reel connected to the reel assembly mechanism.

[0013] The utility model has the following beneficial effects:

[0014] The utility model can monitor the position of the lifting assembly in real time during the process of retracting and releasing the wires and cables by providing a descent sensing member and a descent sensing probe. Once the probe senses that the outer edge below the reel touches the ground and automatically detects that the sensing point is detached, the shutdown protection mechanism can be triggered immediately, effectively preventing equipment damage or safety accidents caused by jamming. The shaft synchronous transmission design between the transmission buffer sleeve and the lifting screw (through the cooperation of the shaft synchronous transmission keyway and the hole synchronous transmission keyway) ensures stability during the lifting process, reduces vibration and noise, and improves the overall operational stability and service life. At the same time, this solution provides a stable installation foundation, which is convenient for regular inspection and maintenance, reduces wear and tear, and extends equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is the structural diagram of the lifting assembly and the anti-jamming mechanism;

[0017] Figure 3 It is the front view of the transmission buffer sleeve, the descending sensing probe and the descending sensing part;

[0018] Figures 1 to 3The reference numerals shown in the figure respectively represent: support frame 1, support platform 11, lifting assembly 2, lifting motor 21, transmission mechanism 22, worm 221, turbine 222, lifting screw 23, shaft synchronous transmission keyway 231, anti-jamming mechanism 3, descending sensing part 31, transmission buffer sleeve 32, descending sensing part moving groove 321, hole synchronous transmission keyway 322, descending sensing probe 33, disc assembly 4, bearing sleeve 5, support bearing 6, disc assembly mechanism 7, disc 8. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] Please refer to Figure 1-2 The utility model provides a wire and cable retracting and releasing lifting device. The support frame 1 is used as the skeleton of the whole device and is firmly installed on the equipment base. The upper end thereof is fixedly installed with a lifting assembly 2, an anti-jamming mechanism 3 and a reel assembly 4. The lifting assembly 2 includes a lifting motor 21, a transmission mechanism 22 and a lifting screw 23. The motor drives the lifting screw 23 to move up and down through the transmission mechanism 22 (including a worm 221 and a turbine 222 meshed therewith). The bottom of the turbine 222 is installed on the support plate 11 on the inner wall of the support frame 1 through a bearing sleeve 5 and a built-in support bearing 6 to ensure smooth and unobstructed rotation.

[0021] Please refer to Figure 3 A transmission buffer sleeve 32 is installed at the bottom of the lifting screw 23. The hole synchronous transmission keyway 322 inside the sleeve is precisely matched with the shaft synchronous transmission keyway 231 at the bottom of the lifting screw 23, ensuring stability and accuracy during the transmission process. The descending sensor 31 is installed on one side of the transmission buffer sleeve 32 and can slide freely up and down in the special descending sensor moving groove 321. Its function is to monitor in real time whether the bottom of the plate 8 contacts the ground during the lifting process. The descending sensor probe 33 is located at the top of the plate assembly 4 and forms a protective mechanism with the descending sensor 31. When abnormal resistance is sensed, the working state of the lifting motor can be adjusted through the control system to realize the suspension of the lifting motor to prevent jamming and damage to machinery and motor electrical appliances.

[0022] The reel assembly is connected to the transmission: the reel assembly 4 includes a reel assembly mechanism 7 directly connected to the bottom of the transmission buffer sleeve 32, and a reel 8 assembled thereon, which is used for the actual wire and cable reeling operation. The reel assembly mechanism 7 is used to support the connection reel, including a fixing frame, a bearing seat, a brake structure, etc., so that the reel can rotate freely to reduce resistance, ensure the stability of the reel during the lifting and rotating process, and lock the reel when necessary to prevent accidental rotation or slipping.

[0023] Working principle and effect: In this embodiment, when the tray 8 needs to be lowered, the electric system lifts the motor 21, and then transmits it to the lifting screw 23 through the transmission mechanism 22, so that the lifting screw 23 makes a linear motion (because there is a synchronous keyway at the bottom of the screw and a transmission key drives the transmission buffer sleeve 32 to move together). Thereby driving the tray assembly mechanism 7 and the tray 8 to descend to the ground. During the descent process, when the lower edge of the tray 8 touches the ground, the reverse force causes the tray 8, the tray assembly mechanism 7, the transmission buffer sleeve 32 and the descending sensor 31 to move upward together, and the descending sensor 31 can slide inside the transmission buffer sleeve 32, so the descending sensor probe 33 fixed on the tray assembly mechanism 7 will be misaligned with the descending sensor 31 at the bottom of the screw side, so that the descending sensor probe 33 cannot sense the descending sensor 31, and the probe will give a disconnection signal, the control electrical part disconnects the control, and the motor stops running. In this way, the transmission mechanism will not be damaged, and the motor will not be stuck and damaged. The function of the descending sensing member moving groove 321 is to facilitate the complete staggering of the descending sensing member 31 and the descending sensing probe 33 to leave a transition area.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire and cable retracting and releasing lifting device, characterized in that: include: A support frame (1), a lifting assembly (2), an anti-jamming mechanism (3) and a plate assembly (4) are connected in sequence; the anti-jamming mechanism (3) comprises a descending sensing member (31) arranged on one side of the bottom of the lifting assembly (2), a transmission buffer sleeve (32) respectively connected to the bottom of the lifting assembly (2) and the bottom of the descending sensing member (31), and a descending sensing probe (33) arranged on the top of the plate assembly (4); a side wall of the transmission buffer sleeve (32) is provided with a descending sensing member moving groove (321), and the descending sensing member (31) moves up and down in the descending sensing member moving groove (321).

2. The wire and cable retracting and releasing lifting device according to claim 1, characterized in that: The lifting assembly (2) comprises a lifting motor (21) arranged at the upper end of the support frame (1), a transmission mechanism (22) connected to the transmission end of the lifting motor (21), and a lifting screw (23) connected to the end of the transmission mechanism (22), and the transmission buffer sleeve (32) is sleeved on the bottom of the lifting screw (23).

3. The wire and cable retracting and releasing lifting device according to claim 2, characterized in that: The bottom of the lifting screw rod (23) is provided with a shaft synchronous transmission keyway (231), and the interior of the transmission buffer sleeve (32) is provided with a hole synchronous transmission keyway (322) whose shape matches that of the shaft synchronous transmission keyway (231).

4. The wire and cable retracting and releasing lifting device according to claim 2, characterized in that: The transmission mechanism (22) comprises a worm (221) and a turbine (222) which are sequentially connected to the transmission end thereof, and the turbine (222) is sleeved on the lifting screw (23).

5. The wire and cable retracting and releasing lifting device according to claim 4, characterized in that: A support platform (11) is provided on the inner wall of the support frame (1), and the bottom of the turbine (222) is arranged on the support platform (11).

6. The wire and cable retracting and releasing lifting device according to claim 5, characterized in that: A bearing sleeve (5) is provided between the turbine (222) and the support platform (11), and a support bearing (6) is provided inside the bearing sleeve (5).

7. The wire and cable retracting and releasing lifting device according to claim 1, characterized in that: The pan assembly (4) comprises a pan assembly mechanism (7) connected to the bottom of a transmission buffer sleeve (32) and a pan (8) connected to the pan assembly mechanism (7).

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