CN210286564U

CN210286564U - Self-locking type manual winch

Info

Publication number: CN210286564U
Application number: CN201920837587.XU
Authority: CN
Inventors: 阮卜琴; 朱正中
Original assignee: Zhejiang Topsun Logistic Control Co Ltd
Current assignee: Zhejiang Topsun Logistic Control Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-04-10
Anticipated expiration: 2029-06-04

Abstract

The utility model provides a from locking-type manual capstan winch belongs to hoisting machinery technical field. It has solved the relatively poor and comparatively inconvenient problem of installation of current manual capstan winch stability in use. This from locking-type manual capstan winch, including support body, reel and pivot, be equipped with first gear on the reel, be equipped with in the pivot handle and with first gear engagement's second gear, be equipped with the ratchet in the pivot, be equipped with pawl subassembly on the support body, still be equipped with clutching mechanism in the pivot, the support body includes first curb plate and the second curb plate that the interval set up, just the ratchet is located the outside of second curb plate on first curb plate and the second curb plate is worn to locate in the pivot, pawl subassembly sets up on the lateral wall of second curb plate, still can dismantle on the lateral wall of second curb plate and be connected with the side cover that locates ratchet and pawl subassembly are all covered. The utility model discloses simple to operate just avoids causing the interference to pawl subassembly, and job stabilization nature is better.

Description

Self-locking type manual winch

Technical Field

The utility model belongs to the technical field of hoisting machinery, a from locking-type manual capstan winch is related to.

Background

The manual winch is a kind of winch, and a hoisting machine for completing traction operation by manually rotating a vertically arranged drum and horizontally winding a flexible member such as a steel wire rope, a chain and the like is commonly used for carrying work and a ship dock. Since the manual winch is driven by manpower, the winch is easily reversed due to the force release during the operation, and therefore a locking structure for preventing the winch from being reversed is required.

For example, the Chinese patent application (application No. 99202439.0) discloses a manual winch with an automatic brake, which comprises a winch base, a large gear shaft wound with a steel wire rope, and a small gear shaft in transmission connection with the large gear shaft through a gear, the automatic brake structure comprises a nut, a bearing bush, a friction plate, a ratchet wheel, the friction plate, a pinion and a pawl, wherein the nut, the bearing bush, the friction plate, the ratchet wheel, the friction plate and the pinion are sequentially sleeved on a pinion shaft, the pawl is arranged on a winch seat, when a handle positively drives the pinion shaft to rotate, the nut, the bearing bush, the friction plate, the ratchet wheel, the friction plate and the pinion are sequentially and tightly attached to form a whole, so that the pinion drives the pinion shaft to rotate to pull a heavy object, when the large gear shaft rotates under the action of a heavy object, the small gear shaft is driven to rotate, the nut moves towards one side of the small gear and forms tight fit with the ratchet wheel, and the ratchet wheel is meshed with the pawl, so that the large gear shaft is locked. However, since the pawl is disposed inside the capstan seat and adjacent to the winding drum on the large gear shaft, even though the installation is inconvenient, the pawl is easily disengaged from the ratchet wheel due to the contact between the winding drum and the pawl, so that the engagement of the ratchet wheel is disabled, and the stability of self-locking of the capstan is affected.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided one kind from locking-type manual capstan winch, the utility model aims to solve the technical problem that: how to make the capstan self-locking more stable and assemble more convenient.

The purpose of the utility model can be realized by the following technical proposal: a self-locking manual winch comprises a bracket body, a winding drum and a rotating shaft, wherein a first gear is arranged on the winding drum, the rotating shaft is provided with a handle and a second gear meshed with the first gear, the rotating shaft is provided with a ratchet wheel, the bracket body is provided with a pawl component capable of reversely locking the ratchet wheel, the rotating shaft is also provided with a clutch mechanism, the clutch mechanism can enable the ratchet wheel and the second gear to synchronously rotate when the rotating shaft rotates forwards and enable the ratchet wheel to rotate relative to the second gear when the rotating shaft rotates backwards, it is characterized in that the bracket body comprises a first side plate and a second side plate which are arranged at intervals, the rotating shaft is arranged on the first side plate and the second side plate in a penetrating way, the ratchet wheel is positioned at the outer side of the second side plate, the pawl assembly is arranged on the outer side wall of the second side plate, and the outer side wall of the second side plate can be detachably connected with a side cover which covers the ratchet wheel and the pawl assembly and is arranged in the ratchet wheel and the pawl assembly.

This from locking-type manual capstan's reel and pivot are all rotated and are connected on the support body, and the ratchet and the pawl subassembly that are used for realizing the pivot auto-lock all set up the outside with the second curb plate, be convenient for install, and keep apart through the second curb plate between pawl subassembly and the reel, avoid the reel to the interference of pawl subassembly, and simultaneously, the setting of side cover covers ratchet and pawl subassembly cage including, avoid outside interference to ratchet and pawl subassembly, make its work more reliable and more stable, and, the maintenance and the repair work in the later stage also are convenient for to ratchet and pawl subassembly external structure.

In foretell manual capstan winch of locking-type, all open the shaft hole on first curb plate and the side cover, it has the hole of stepping down to open on the second curb plate, all be equipped with the axle sleeve in the shaft hole, the one end of pivot is rotated with the axle sleeve on the first curb plate and is connected and the other end of pivot passes the hole of stepping down and is rotated with the axle sleeve on the side cover and be connected. The first side plate and the side cover support two ends of the rotating shaft respectively, so that normal rotation of the rotating shaft is guaranteed.

In the above self-locking manual winch, the clutch mechanism includes a first catch, a first friction plate, a second friction plate and a second catch, the second gear, the first catch, the first friction plate, the ratchet, the second friction plate and the second catch are sequentially arranged on the rotating shaft in a penetrating manner, and the second gear is in threaded connection with the rotating shaft. Therefore, the second gear can move along the axial direction of the rotating shaft when the rotating shaft rotates forwards or backwards, so that the second gear can be fixedly connected with or separated from the ratchet wheel.

In the self-locking manual winch, the rotating shaft is provided with a convex shoulder, one side, far away from the second friction plate, of the second blocking plate is abutted against the convex shoulder, the rotating shaft is further sleeved with a fixing sleeve for abutting against a second gear, the fixing sleeve is fixedly connected with the rotating shaft through a pin shaft, and the second gear is located between the fixing sleeve and the first blocking plate. The second gear, the first separation blade, the first friction plate, the ratchet wheel, the second friction plate and the second separation blade which are sleeved on the rotating shaft are limited through the fixing sleeve and the convex shoulder, and the parts are convenient to install on the rotating shaft.

In the above self-locking manual winch, the rotating shaft further includes a fixing section for being in insertion fit with the second stopper, the fixing section is adjacent to the shoulder, and a plurality of flat surfaces are arranged on the fixing section in the circumferential direction. Therefore, the second baffle is fixed by being inserted and matched with the fixed section, so that the second baffle can synchronously rotate with the rotating shaft.

In the self-locking manual winch, the number of the flat surfaces on the fixing section is four, and the four flat surfaces are uniformly distributed along the circumferential direction of the fixing section.

In the above self-locking manual winch, the bracket body further includes a bottom plate, two sides of the bottom plate are fixedly connected with the first side plate and the second side plate respectively, two ends of the bottom plate are both provided with flanges, and two ends of each flange are connected with the first side plate and the second side plate respectively. The structural strength of the support body is further improved due to the arrangement of the flanging.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses a ratchet and pawl subassembly all set up in the outside of support body to seal through the side cover, be convenient for install and the maintenance in later stage, and avoid the during operation to cause the interference to ratchet and pawl subassembly, job stabilization nature is better.

2. The utility model discloses a second gear and pivot threaded connection make the second gear along the axial displacement of pivot and with form between the ratchet link firmly or separate, guarantee the normal work and the auto-lock of this capstan winch.

Drawings

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

fig. 2 is an exploded view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the mating structure of the frame body and the side cover;

FIG. 5 is a schematic view of the ratchet and pawl assembly configuration;

fig. 6 is a schematic structural view of the rotating shaft.

In the figure, 11, the stent body; 111. a first side plate; 112. a second side plate; 113. a base plate; 114. a connecting rod; 12. a side cover; 11a, a shaft hole; 11b, a yielding hole; 11c, flanging; 13. a dust cover; 2. a reel; 21. a first gear; 3. a rotating shaft; 31. a threaded segment; 32. a guide section; 33. a fixed section; 34. a shoulder is formed; 41. a second gear; 42. a first baffle plate; 43. a first friction plate; 44. a ratchet wheel; 45. a second friction plate; 46. a second baffle plate; 47. a shaft sleeve; 48. clamping a hoop; 49. fixing a sleeve; 5. a handle; 6. a pawl assembly; 61. a pawl; 62. a fixed shaft; 63. a torsion spring; 7. and (7) a pin shaft.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

A self-locking manual winch is shown in figure 1 and comprises a support body 11, a winding drum 2, a rotating shaft 3 and a clutch mechanism. Wherein, reel 2 is used for coiling wire rope or chain, and reel 2 and pivot 3 all transversely set up on support body 11, and one side of reel 2 is equipped with first gear 21, is equipped with the second gear 41 with first gear 21 meshing on the pivot 3, and the one end of pivot 3 is equipped with handle 5, makes the people can drive reel 2 through handle 5 and rotate.

As shown in fig. 2, 3, 5, and 6, the clutch mechanism includes a second gear 41, a first catch 42, a first friction plate 43, a ratchet 44, a second friction plate 45, a second catch 46, and a pawl assembly 6 disposed on the frame and engaged with the ratchet 44, the shaft 3 is connected to the frame in a transverse rotation manner, the second gear 41 is in threaded connection with the shaft 3, the shaft 3 has a shoulder 34, one side of the second catch 46 away from the second friction plate 45 abuts against the shoulder 34, the shaft 3 is further sleeved with a fixing sleeve 49 for abutting against the second gear 41, the fixing sleeve 49 is fixedly connected with the shaft 3 through a pin 7, the second gear 41 is located between the fixing sleeve 49 and the first catch 42, such that when the shaft 3 rotates in a forward direction, the second gear 41 moves towards the ratchet 44 and causes the second gear 41, the first catch 42, the first catch 43, the ratchet 44 to move, and cause the second gear 41, the first catch 42, the first catch 43, the, The second friction plate 45, the second friction plate 46 and the shoulder 34 are sequentially pressed and formed into a whole, so that the rotating shaft 3 drives the second gear 41 to rotate and drives the winding drum 2 to rotate so as to tighten the steel wire rope, when the rotating shaft 3 rotates reversely, the second gear 41 moves towards the fixing sleeve 49 and is pressed and formed into a whole with the fixing sleeve 49, so that the winding drum 2 is driven to rotate so as to pay out the steel wire rope, when the steel wire rope is connected with a heavy object and the winding drum 2 rotates under the pulling force of the heavy object, the winding drum 2 drives the second gear 41 to rotate and drives the second gear 41 to move towards one side of the ratchet 44, so that the second gear 41, the first baffle plate 42, the first friction plate 43, the ratchet 44, the second friction plate 45 and the two plates are sequentially pressed and formed into a whole, and the ratchet 44, the rotating shaft 3 and the second gear 41 are locked due to the reverse limit of the ratchet, the drum 2 is prevented from rotating under the action of a heavy object, so that the working stability and reliability of the winch are ensured.

As shown in fig. 6, the rotating shaft 3 includes a threaded section 31, a guiding section 32, a fixing section 33 and a shoulder 34, which are sequentially distributed along an axial direction, the threaded section 31 has a thread with a trapezoidal cross section, the second gear 41 is threaded on the threaded section 31, the first blocking piece 42, the first friction piece 43, the ratchet 44 and the second friction piece 45 are all sleeved on the guiding section 32, the cross section of the guiding section 32 is circular, so that the first blocking piece 42, the first friction piece 43, the ratchet 44 and the second friction piece 45 can rotate relative to the guiding section 32 when not being pressed, the fixing section 33 is adjacent to the shoulder 34, the second blocking piece 46 is sleeved on the fixing section 33, the fixing section 33 has a plurality of flat surfaces in a circumferential direction, in this embodiment, the number of the flat surfaces is four, the four flat surfaces are uniformly distributed along the circumferential direction of the fixing section 33, so that the cross section of the fixing section 33 has an approximate direction, the second blocking piece 46 also has a through hole with the same shape as, the second blocking piece 46 is sleeved on the fixing section 33 and then can form a snap fit with the fixing section 33, so that the second blocking piece 46 can rotate synchronously with the rotating shaft 3, and the stability of connection between the second gear 41, the first blocking piece 42, the first friction piece 43, the ratchet 44, the second friction piece 45 and the second blocking piece 46 after being pressed tightly is ensured, and the synchronization with the rotating shaft 3 is ensured, so that the locking effect of the ratchet 44 and the pawl 61 mechanism on the rotating shaft 3 is ensured.

As shown in fig. 2, fig. 3, and fig. 4, the rack body is formed by integrally punching and forming steel plates, and includes a bottom plate 113, and a first side plate 111 and a second side plate 112 located on two sides of the bottom plate 113, the winding drum 2 is rotatably connected between the first side plate 111 and the second side plate 112, a shaft hole 11a is formed in the first side plate 111, a yielding hole 11b is formed in the second side plate 112, a side cover 12 is further fixedly disposed on the second side plate 112, a shaft hole 11a is also formed in the side cover 12, both the shaft hole 11a in the first side plate 111 and the shaft hole 11a in the side cover 12 are provided with shaft sleeves 47, one end of the rotating shaft 3 is connected with the shaft sleeve 47 in the first side plate 111, and the other end of the rotating shaft 3 passes through the yielding hole 11b in the second side plate 112 to be rotatably connected with the shaft sleeve 47 in the side cover 12, and both the rotating shaft. The ratchet 44 is located on the outer side of the second side plate 112, the pawl assembly 6 is arranged on the outer side wall of the second side plate 112, the pawl assembly 6 comprises a fixing shaft 62, a pawl 61 and a torsion spring 63, the fixing shaft 62 is fixedly arranged on the second side plate 112, the pawl 61 is rotatably connected with the fixing shaft 62, the torsion spring 63 is sleeved on the fixing shaft 62, two ends of the torsion spring 63 are respectively connected with the pawl 61 and the second side plate 112, the pawl 61 is enabled to be in contact with the ratchet 44 all the time, and therefore the matching between the pawl 61 and the ratchet 44 is guaranteed. The side cover 12 is fixed to the outer side wall of the second side plate 112 by bolts, so that the ratchet 44 and the pawl assembly 6 are both enclosed in the side cover 12, thereby preventing external influence on the ratchet 44 and the pawl assembly 6.

Further, as shown in fig. 4, both ends of the bottom plate 113 are provided with flanges 11c, both ends of the flanges 11c are respectively connected with the first side plate 111 and the second side plate 112, a connecting rod 114 is further arranged between the first side plate 111 and the second side plate 112, the connecting rod 114 is located above the bottom plate 113, and both ends of the connecting rod 114 are respectively connected with the first side plate 111 and the second side plate 112, so that the structural strength of the bracket body 11 is higher.

Furthermore, the dust cover 13 is fixedly arranged on the bracket body 11, and the first gear 21 and the second gear 41 are covered by the dust cover 13, so that the influence of impurities such as dust on the meshing of the first gear 21 and the second gear 41 is reduced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the bracket body 11, the side cover 12, the dust cover 13, the winding drum 2, the first gear 21, the rotating shaft 3, the threaded section 31, the guide section 32, the fixing section 33, the shoulder 34, the second gear 41, the first catch 42, the first friction plate 43, the ratchet 44, the second friction plate 45, the second catch 46, the bushing 47, the clip 48, the handle 5, the pawl assembly 6, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a from locking-type manual capstan winch, includes support body (11), reel (2) and pivot (3), be equipped with first gear (21) on reel (2), be equipped with handle (5) and second gear (41) with first gear (21) meshing on pivot (3), be equipped with ratchet (44) on pivot (3), be equipped with pawl subassembly (6) that can carry out reverse locking to ratchet (44) on support body (11), still be equipped with clutching mechanism on pivot (3), clutching mechanism can make ratchet (44) and second gear (41) synchronous rotation and make the relative second gear rotation of ratchet (44) when pivot (3) reversal when pivot (3) corotation, its characterized in that, support body (11) are including first curb plate (111) and second curb plate (112) that the interval set up, pivot (3) are worn to locate on first curb plate (111) and second curb plate (112) and ratchet (44) are located second curb plate (44), and ratchet (44) are located second curb plate (44) and rotate (112) The pawl component (6) is arranged on the outer side wall of the second side plate (112), and the outer side wall of the second side plate (112) can be detachably connected with a side cover (12) which covers the ratchet wheel (44) and the pawl component (6) and is arranged inside.

2. The self-locking manual winch according to claim 1, wherein the first side plate (111) and the side cover (12) are both provided with an axle hole (11a), the second side plate (112) is provided with an abdicating hole (11b), the axle hole (11a) is internally provided with an axle sleeve (47), one end of the rotating shaft (3) is rotatably connected with the axle sleeve (47) on the first side plate (111) and the other end of the rotating shaft (3) passes through the abdicating hole (11b) and is rotatably connected with the axle sleeve (47) on the side cover (12).

3. The self-locking manual winch according to claim 2, wherein the clutch mechanism comprises a first blocking plate (42), a first friction plate (43), a second friction plate (45) and a second blocking plate (46), the second gear (41), the first blocking plate (42), the first friction plate (43), the ratchet wheel (44), the second friction plate (45) and the second blocking plate (46) are sequentially arranged on the rotating shaft (3) in a penetrating manner, and the second gear (41) is in threaded connection with the rotating shaft (3).

4. The self-locking manual winch according to claim 3, wherein the rotating shaft (3) is provided with a shoulder (34), one side of the second blocking piece (46) away from the second friction plate (45) abuts against the shoulder (34), the rotating shaft (3) is further sleeved with a fixing sleeve (49) for abutting against a second gear (41), the fixing sleeve (49) is fixedly connected with the rotating shaft (3) through a pin shaft (7), and the second gear (41) is located between the fixing sleeve (49) and the first blocking piece (42).

5. Self-locking manual winch according to claim 4, characterised in that said spindle (3) further comprises a fixing section (33) for the plug-in engagement with a second stop (46), said fixing section (33) being adjacent to the shoulder (34), said fixing section (33) having several flat faces in the circumferential direction.

6. Self-locking manual winch according to claim 5, characterised in that the number of flat surfaces on said fixed section (33) is four and that the four flat surfaces are evenly distributed along the circumference of the fixed section (33).

7. The self-locking manual winch according to claim 1, 2, 3 or 4, wherein the bracket body (11) further comprises a bottom plate (113), two sides of the bottom plate (113) are fixedly connected with the first side plate (111) and the second side plate (112) respectively, two ends of the bottom plate (113) are provided with flanges (11c), and two ends of the flanges (11c) are connected with the first side plate (111) and the second side plate (112) respectively.