CN201999676U - Automatic-control friction clutching self-locking manual winch - Google Patents

Abstract

The utility model self-controlled friction clutch self-locking manual winch includes a frame body, a bottom frame, a reel, and a deceleration transmission mechanism. The reel is driven to rotate by the deceleration transmission mechanism. The ratchet installed on the inner side of the ratchet has a friction plate at the inner end of the ratchet, and a shoulder disc on the main shaft that matches the friction plate on the side end surface of the ratchet. The transmission gear on the main shaft and the main shaft are self-locking through threaded connections. Friction control mechanism, when it is not necessary to open the backstop pawl during work, the reel can be controlled by the hand crank on the drive shaft to achieve traction, stop, release, brake control and various tasks, easy to operate and safe to use Good performance, high work efficiency and strong applicability.

Description

Self-control friction clutch self-locking manual winch

technical field

The utility model relates to a lifting and pulling device.

Background technique

In the prior art, the hoisting and traction winching device used in operations such as erecting poles in power systems, lifting transformers, and erecting wires of transmission lines is composed of a frame body, a reel, a gear reduction transmission mechanism, and a ratchet wheel. Composed of a pawl anti-reversal mechanism and a brake friction brake mechanism, the disadvantage of this hand-cranked lifting and traction device is that every time the lifting and traction tension is released, it is necessary to use the manual crank to control the force in reverse. At the same time, manually open the pawl of the anti-reversal mechanism of the ratchet pawl, and then operate the manual brake friction brake mechanism to control the release. Reversing the handle of the hand crank hurts people.

Utility model content

The purpose of the utility model is to provide a self-controlled friction clutch self-locking manual winch with good performance, safe use and convenient operation .

The utility model includes a frame body, a bottom frame, a reel, and a deceleration transmission mechanism. The reel is driven to rotate by the deceleration transmission mechanism. The transmission gear 51 of the transmission gear 51 is equipped with a ratchet 7 in a moving fit on the main shaft inside the transmission gear 51, and a matching pawl 70 is provided on the frame body, and a circular groove 71 is provided on the inner side of the ratchet. There is a friction plate 72, and a shoulder disc 52 that matches the friction plate groove on the side end surface of the ratchet wheel is provided on the main shaft. The transmission gear 51 on the main shaft is connected with the main shaft 5 through thread fit. A retaining ring 53 is formed. When the main shaft is turned by the hand crank, the transmission gear 51 that is threadedly connected with the main shaft rotates relative to the main shaft 5, so that the transmission gear 51 moves inwardly and squeezes the side end surface of the ratchet 7, so that the friction plate 72 in the ratchet 7 is in contact with the main shaft. The shaft shoulder plate 52 on the top is tightly pressed and combined, and the main shaft 5, the main transmission gear 51 and the ratchet 7 form a tight combination with each other. The main shaft 5 drives the reduction transmission mechanism through the transmission gear 51 on it to drive the reel to rotate. Cooperate with forward rotation transmission work, and can not reverse, complete automatic backstop self-locking in the work; when the main shaft is driven in the reverse direction by the hand crank, the transmission gear 51 connected with the main shaft through threads moves to the outside, and the transmission The gear 51 reduces the extrusion force with the ratchet 7, the friction force is reduced, and the transmission gear 51 slides relative to the ratchet 7, so that the transmission gear 51 and the reel rotate in the opposite direction, and the reel traction is relaxed; Drive the main shaft to control the extrusion friction between the transmission gear 51 and the ratchet 7 to achieve the friction clutch brake control function, so when the backstop pawl does not need to be opened during work, the reel can be controlled by the hand crank on the main shaft Realize various tasks of traction, stop, relaxation and brake control.

The utility model has the advantages of good structure, small volume, convenient operation, good use safety, high working efficiency and strong applicability.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Fig. 2 is an AA sectional view of Fig. 1 .

Fig. 3 is a sectional view taken along line BB of Fig. 1 .

Detailed ways

The utility model comprises a frame body 1, a bottom frame 2, a reel 3, a deceleration transmission mechanism, and a self-locking friction control mechanism. The reel 3 is connected with the sleeve shaft 4 through a bearing device 31, and the sleeve shaft 4 is connected through the bearing device. 41 is connected with the frame body 1 in rotation, and the transmission main shaft 5 is installed and installed in the sleeve shaft 4 through the bearing device 45. The transmission shaft 6 is also arranged on the frame body 1, and on the left shaft end of the main shaft 5 and the transmission shaft 6 A pinion gear 51 and a bull gear 61 that engage with each other are installed respectively, and a bull gear 42 and a pinion 62 that engage with each other are respectively installed on the right shaft ends of the sleeve shaft 4 and the drive shaft 6 to form a reduction transmission mechanism. On the transmission gear 51 inner main shaft 5, a ratchet 7 is installed in motion, on the frame body 1, a matching pawl 70 is provided, and a circular groove 71 is arranged on the inner end surface of the ratchet 7, and a circular groove 71 is arranged in the groove 71. There is a friction plate 72, on the main shaft 5 is provided with a shoulder disc 52 that cooperates with the friction plate groove 71 on the side end surface of the ratchet 7, a friction plate 75 is provided between the transmission gear 51 and the ratchet 7, the transmission gear on the main shaft 5 51 is connected with the main shaft 5 through threads, and a positioning retaining ring 53 is provided on the outside of the transmission gear 51 to form a self-locking friction control mechanism; Correspondingly on the sleeve shaft 4, there are matching sliding block separation pawls 80 and sleeve shaft separation pawls 40 to form a claw clutch. A shift fork 81 is provided on the slider 8, and an operating rod is provided on the frame body 1 to drive The shift fork 81 makes the slide block 8 move left and right to carry out the clutch; on the left and right ends of the main shaft 5 and the power transmission shaft 6, a square head is provided to cooperate with the hand crank 9 to connect.

When the utility model rotates the main shaft 5 by the hand handle 9, the sleeve shaft 4 is driven by the transmission shaft 6 and the gears 51, 61, 62, 42 to rotate, and the sleeve shaft 4 drives the reel 3 to rotate through the slider 8 clutch.

The utility model also can drive the sleeve shaft 4 to rotate quickly by the hand crank 9 rotating the drive shaft 6 .

The utility model drives the reel 3 through the clutch control of the slider 8, and separates when the traction force is not needed, so that the reel 3 can be emptied, which is convenient for work and improves work efficiency.

Claims (1)

1. Self-control friction clutch self-locking manual winch, including frame body, bottom frame, reel, deceleration transmission mechanism, the reel is driven to rotate by deceleration transmission mechanism, its characteristic is that the transmission spindle is equipped with self-locking friction control mechanism, The transmission gear provided on the transmission main shaft is fitted with a ratchet on the inner main shaft of the transmission gear, and a matching pawl is provided on the frame body, and a circular groove is opened on the inner end surface of the ratchet. There is a friction plate in the groove, and a shoulder disk matching the friction plate groove on the side end surface of the ratchet wheel is provided on the main shaft. The transmission gear on the main shaft and the main shaft are connected through thread fit, and a positioning retaining ring is provided on the outside of the transmission gear. form. 2. The self-control friction clutch self-locking manual winch according to claim 1, characterized in that the reel (3) is connected to the quill shaft (4) through a bearing device (31) in rotation, and the quill shaft (4) The bearing device (41) is connected with the frame body (1) in rotation, and the transmission main shaft (5) is installed in the sleeve shaft (4) through the bearing device (45), and a transmission shaft is also arranged on the frame body (1). (6), on the left shaft ends of the main shaft (5) and the transmission shaft (6), a pinion gear (51) and a bull gear (61) which are engaged with each other are installed respectively, and the sleeve shaft (4) and the transmission shaft A large gear (42) and a pinion (62) that mesh with each other are installed on the right shaft end of the shaft (6); a ratchet (7) is mounted on the main shaft (5) inside the transmission gear (51) for dynamic cooperation. , a matching pawl (70) is provided on the frame body (1), a circular groove (71) is opened on the inner end surface of the ratchet (7), and a friction plate (72) is arranged in the groove (71). ), the main shaft (5) is provided with a shoulder plate (52) that matches the friction plate groove (71) on the side end surface of the ratchet (7), and a friction plate (52) is provided between the transmission gear (51) and the ratchet (7). piece (75), the transmission gear (51) on the main shaft (5) is connected with the main shaft (5) through screw threads, and a positioning retaining ring (53) is arranged on the outside of the transmission gear (51); A slide block (8) is arranged on the ring through a sliding key fit connection, and a matching slide block separating claw (80) and the sleeve shaft (40) are correspondingly provided on the slide block (8) and the quill shaft (4) to form The claw clutch is provided with a shift fork (81) on the slider (8), and an operating lever is provided on the frame body (1) to drive the shift fork (81) to move left and right on the slider (8) for clutching; (5) and the left and right ends of the drive shaft (6) are provided with a square head and are connected with the hand crank (9).

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