Heavy hand-cranking capstan

Abstract

The utility model belongs to the technical field of machinery, and particularly relates to a heavy hand-cranking capstan which comprises a capstan seat, a main shaft gear set, a middle shaft gear set and a large gear set, the main shaft gear set, the middle shaft gear set and the large gear set are arranged in an inner cavity of the capstan seat, and main shaft limiting sleeves are fixedly installed on the front sides of the left side wall and the right side wall of the inner cavity of the capstan seat. A main shaft gear set is movably arranged between the two main shaft limiting sleeves, middle shaft limiting sleeves are fixedly installed in the middles of the left side wall and the right side wall of an inner cavity of the winch base, a middle shaft gear set is movably arranged between the two middle shaft limiting sleeves, and a second limiting screw rod is movably arranged between the rear portions of the left side wall and the right side wall of the inner cavity of the winch base. The second limiting screw is fixedly sleeved with a large gear set. When in use, the main shaft gear set, the middle shaft gear set and the large gear set are meshed to transmit power, so as to ensure that the output force is larger, the single-tooth load force is reduced, and the service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field, and concretely relates to a heavy hand winch. BACKGROUND

[0002] Hand winch is a hoisting tool suitable for many places, and the manual winch can displace heavy objects in places such as shopping malls and factories, and the existing hand winch has the following problems:

[0003] 1. The commonly used hand winch adopts two sets of gear structures, the output force increase is limited when loading objects, and the single tooth load is high and the gear wears fast.

[0004] 2. The gear and the gear shaft are generally in tight fit, without half-round flat or key pin function, and are easy to loosen.

[0005] Therefore, it is very important to obtain a hand winch with larger output force, smaller single tooth load, longer service life and stability. UTILITY MODEL CONTENTS

[0006] In view of the defects in the prior art, the utility model aims to provide a heavy hand winch.

[0007] According to the heavy hand winch, the U-shaped inner cavity of the winch base is provided with the main shaft gear set, the middle shaft gear set and the large gear set, the front side of the left and right side walls of the winch base inner cavity is fixedly installed with the main shaft limiting sleeve, the main shaft gear set is movably arranged between the two main shaft limiting sleeves, the middle part of the left and right side walls of the winch base inner cavity is fixedly installed with the middle shaft limiting sleeve, the middle shaft gear set is movably arranged between the two middle shaft limiting sleeves, the second limiting screw is movably arranged between the rear of the left and right side walls of the winch base inner cavity, and the large gear set is fixedly arranged on the second limiting screw.

[0008] In a preferred embodiment, the two main shaft limiting sleeves are divided into the first main shaft limiting sleeve on the left wall upper side of the winch base inner cavity and the second main shaft limiting sleeve on the right wall upper side of the winch base inner cavity, the first main shaft limiting sleeve and the second main shaft limiting sleeve are symmetrically arranged, the two middle shaft limiting sleeves are divided into the second middle shaft limiting sleeve on the left wall of the winch base inner cavity and the first middle shaft limiting sleeve on the right wall of the winch base inner cavity, and the second middle shaft limiting sleeve and the first middle shaft limiting sleeve are symmetrically arranged.

[0009] In a preferred embodiment, the front side of the second limiting screw is provided with the first limiting screw, the two ends of the first limiting screw and the two ends of the second limiting screw pass through the two walls of the winch base inner cavity, and the two ends of the first limiting screw and the two ends of the second limiting screw are provided with nut sleeves.

[0010] In a preferred embodiment: the main shaft gear set is composed of a main shaft, a main shaft gear, a brake disc, a brake pad and a ratchet wheel, the main shaft is rotatably arranged with a first main shaft limiting sleeve and a second main shaft limiting sleeve respectively, the main shaft gear is sleeved on the main shaft, and a second half-round flat connection is adopted at the matching part between the main shaft and the main shaft gear.

[0011] In a preferred embodiment: the brake disc is arranged on the right side of the main shaft gear, the brake pad is arranged on the right side of the brake disc, and the brake pad is sleeved on the main shaft gear and can slide on the main shaft gear.

[0012] In a preferred embodiment: the handle set comprises a handle and a handle, the handle is sleeved on the main shaft, the inner circle thread of the handle corresponds to the right end thread of the main shaft, the handle is fixedly installed at the end of the handle, the handle is driven by the handle, the handle is driven by the handle, and the handle is driven by the handle.

[0013] In a preferred embodiment: the ratchet wheel is fixedly installed on the right side wall of the inner cavity of the winch seat and can be reset, and the ratchet wheel is arranged correspondingly with the ratchet wheel.

[0014] In a preferred embodiment: the main shaft gear set is composed of a main shaft, a main shaft gear, a brake disc, a brake pad and a ratchet wheel, the main shaft is rotatably arranged with a first main shaft limiting sleeve and a second main shaft limiting sleeve respectively, the main shaft gear is sleeved on the main shaft, and a second half-round flat connection is adopted at the matching part between the main shaft and the main shaft gear.

[0015] In a preferred embodiment: the main shaft gear set is arranged behind the main shaft gear set, and the main shaft gear set and the main shaft gear set are driven by the main shaft gear and the main gear.

[0016] In a preferred embodiment: the main shaft gear set is composed of a main shaft, a main shaft gear, a brake disc, a brake pad and a ratchet wheel, the main shaft is rotatably arranged with a first main shaft limiting sleeve and a second main shaft limiting sleeve respectively, the main shaft gear is sleeved on the main shaft, and a second half-round flat connection is adopted at the matching part between the main shaft and the main shaft gear.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. The utility model discloses a main shaft gear set, a middle shaft gear set and a large gear set are adopted to realize three sets of gear meshing power transmission, so that the output force is larger, the single tooth load is smaller, and the service life is longer.

[0019] 2. The utility model discloses a main shaft and a main shaft gear are adopted to realize the circumferential fixation and torque transmission of the shaft and the gear, and the problem of the free sliding of the heavy object caused by the idling of the gear and the gear shaft is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the utility model will become more apparent through the following detailed description of the non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 It is the structure schematic diagram of the utility model;

[0022] Figure 2 It is the plan view of the utility model;

[0023] Figure 3 It is the front view of the utility model;

[0024] Figure 4 It is the structure schematic diagram of the utility model Figure 3 It is the section view at A-A of the utility model;

[0025] Figure 5 It is the structure schematic diagram of the spring of the utility model;

[0026] Figure 6 It is the structure schematic diagram of the utility model Figure 5 It is the section view at B-B of the utility model;

[0027] Figure 7 It is the structure schematic diagram of the main shaft gear of the utility model;

[0028] Figure 8 It is the structure schematic diagram of the utility model Figure 5 It is the section view at C-C of the utility model.

[0029] DETAILED DESCRIPTION

[0030] The utility model will be described in detail below in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0031] As Figures 1-8 The utility model discloses a heavy hand winch, including winch seat 101, main shaft gear group, middle axle gear group and big gear group, winch seat 101 is a U-shaped bottom plate, and the U-shaped inner chamber of winch seat 101 is provided with main shaft gear group, middle axle gear group and big gear group, and the left and right two side walls of winch seat 101 inner chamber are all fixedly installed with the front side of main shaft limiting sleeve, and the two main shaft limiting sleeves are divided into the first main shaft limiting sleeve 102 of winch seat 101 inner chamber left wall upper side and the second main shaft limiting sleeve 105 of winch seat 101 inner chamber right wall upper side, and the first main shaft limiting sleeve 102 and the second main shaft limiting sleeve 105 are symmetrically arranged, and the main shaft gear group is movably arranged between the first main shaft limiting sleeve 102 and the second main shaft limiting sleeve 105, and the left and right two side walls of winch seat 101 inner chamber are all fixedly installed with the middle part of middle axle limiting sleeve, and the two middle axle limiting sleeves are divided into the second middle axle limiting sleeve 104 of winch seat 101 inner chamber left wall and the first middle axle limiting sleeve 103 of winch seat 101 inner chamber right wall, and the second middle axle limiting sleeve 104 and the first middle axle limiting sleeve 103 are symmetrically arranged, and the middle axle gear group is movably arranged between the second middle axle limiting sleeve 104 and the first middle axle limiting sleeve 103, and the left and right two side walls of winch seat 101 inner chamber are movably arranged with the second limiting screw 606 between the rear, and the big gear group is fixedly sleeved on the second limiting screw 606, and the first limiting screw 605 is arranged on the front side of second limiting screw 606, and the first limiting screw 605 can guide the direction of rope and belt and prevent the rope and belt from being stuck by gear when pulling the object, and the both ends of first limiting screw 605 and the both ends of second limiting screw 606 all pass through the two walls of winch seat 101 inner chamber, and the corresponding nut sleeve is arranged on the rod end, so that the both ends of first limiting screw 605 and the both ends of second limiting screw 606 will not slip out from the two walls of winch seat 101 inner chamber.

[0032] The main shaft gear set is composed of a main shaft 201, a main shaft gear 202, a brake disc 203, a brake pad 204 and a ratchet wheel 205. The main shaft 201 is rotatably arranged with the first main shaft limiting sleeve 102 and the second main shaft limiting sleeve 105. The main shaft gear 202 is sleeved on the main shaft 201. The second half circle flat 603 is used to connect the matching part between the main shaft 201 and the main shaft gear 202, so as to realize the circumferential fixing and torque transmission between the main shaft 201 and the main shaft gear 202. The brake disc 203 is arranged on the right side of the main shaft gear 202. The brake pad 204 is arranged on the right side of the brake disc 203. The brake pad 204 is sleeved on the main shaft gear 202 and can slide on the main shaft gear 202. The right end of the main shaft 201 is provided with a screw thread. The right end of the main shaft 201 is provided with a handle set. The handle set includes a handle 501 and a handle 502. The handle 501 is sleeved on the main shaft 201. The inner circle screw thread of the handle 501 corresponds to the screw thread at the right end of the main shaft 201. The handle 502 is fixedly installed at the end of the handle 501. The inner circle screw thread of the handle 501 is driven to move left along the screw thread at the right end of the main shaft 201 until the brake pad 204 is tightened, so as to realize the brake function. The spring 604 is arranged on the right side of the connecting end of the handle 501 and the main shaft 201. The right end of the main shaft 201 is screwed with a corresponding nut sleeve. The nut sleeve is used for limiting the spring 604.

[0033] The ratchet wheel 106 is fixedly installed on the right side wall of the inner cavity of the capstan seat 101 and can rotate. The ratchet wheel 106 is arranged correspondingly with the ratchet wheel 205. When the main shaft gear set rotates forward, the ratchet wheel 205 on the main shaft gear set rotates. When the ratchet wheel 205 rotates one tooth, the ratchet wheel 106 immediately falls into the ratchet wheel 205 and stops the handle from rotating, so that the ratchet wheel 205 cannot rotate back.

[0034] The middle shaft gear set is composed of a middle gear shaft 301, a middle gear 302 and a pinion 303. The middle gear shaft 301 is rotatably arranged with the second middle shaft limiting sleeve 104 and the first middle shaft limiting sleeve 103. The middle gear 302 and the pinion 303 are both sleeved on the middle gear shaft 301. The first half circle flat 601 is used to connect the matching part between the middle gear 302 and the pinion 303 and the matching part between the pinion 303 and the middle gear shaft 301, so as to realize the circumferential fixing and torque transmission between the middle gear 302 and the pinion 303 and the middle gear shaft 301. The middle shaft gear set is arranged behind the main shaft gear set. The main shaft gear set and the middle shaft gear set are driven by the meshing transmission between the main shaft gear 202 and the middle gear 302. The middle gear shaft limiting disc 602 is fixedly installed on the right side of the middle gear shaft 301, so as to prevent the middle gear 302 from slipping during rotation and the middle gear 302 from being separated from the meshing of the main shaft gear 202.

[0035] The large gear set is composed of a large gear shaft 401, a large gear 402, a winding drum 403 and a winding drum limiting disc 404, the large gear shaft 401 is rotationally arranged on the capstan base 101, the winding drum 403 is fixedly installed on the large gear shaft 401, the winding drum 403 winds a rope, the winding drum limiting disc 404 is fixedly installed at the left and right ends of the winding drum 403, the winding drum limiting disc 404 can limit the winding rope, the large gear 402 is arranged at the right side of the winding drum 403 in a spaced manner, the large gear 402 is fixed on the large gear shaft 401, the large gear set is arranged behind the middle shaft gear set, and the middle shaft gear set and the large gear set are in meshing transmission through the pinion 303 and the large gear 402.

[0036] Working principle

[0037] When the utility model is used, the inner circle screw thread of the handle 502 drives the right end screw thread of the main shaft 201, the handle 501 is pushed to the left along the right end screw thread of the main shaft 201, and the brake pad 204 is pushed tightly, at this time, the main shaft set rotates forward, the main shaft 201 drives the main shaft gear 202 to rotate, the main shaft gear 202 is in meshing transmission with the middle gear 302, the middle gear set rotates reversely, the middle gear 302 drives the middle gear shaft 301 to rotate, the middle gear shaft 301 drives the pinion 303 to rotate, the pinion 303 is in meshing transmission with the large gear 402, the large gear set rotates forward, the winding drum 403 of the large gear set winds the rope to pull the heavy object, the power is transmitted through three groups of gears, the output force is larger, the single tooth load is smaller, and the service life is longer, at the same time that the main shaft set rotates forward, the ratchet 205 on the main shaft set rotates, the ratchet 205 rotates one tooth, the ratchet piece 106 immediately falls into the ratchet tooth and stops the handle from rotating, and the brake pad 204 is pushed tightly, at this time, all the gear sets stop rotating, the brake function is realized, and it is ensured that the heavy object does not fall freely.

[0038] The handle 502 rotates reversely, the main shaft set rotates reversely, and the middle gear set rotates forward, at this time, the large gear set rotates reversely, the rope on the winding drum 403 of the large gear set slowly unwinds to lower the heavy object, at the same time that the heavy object falls, the heavy object drives the large gear 402 to rotate reversely, the middle gear 302 transmits the power to the main shaft gear 202, at this time, the main shaft 201 also rotates reversely, the screw thread in the handle 501 is not in the static state under the pushing force of the spring 604, the main shaft 201 rotates reversely, the brake pad 204 is pushed tightly, at this time, all the gear sets stop rotating, the brake function is realized, and it is ensured that the heavy object does not fall freely.

[0039] Meanwhile, the matching part between the main shaft 201 and the main shaft gear 202 adopts the second half-round flat 603 to connect, the matching part between the middle gear 302, the pinion 303 and the middle gear shaft 301 adopts the first half-round flat 601 to connect respectively, the circumferential fixing and the torque transmission of the shaft and the gear are realized, the idle running of the gear and the gear shaft is solved, and the danger caused by the free sliding of the heavy object is solved.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the specific implementation described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

Claims

1. A heavy-duty hand-cranked winch, characterized in that, The device includes a winch base (101), a main shaft gear set, a central shaft gear set, and a large gear set. The winch base (101) is a U-shaped base plate. The main shaft gear set, the central shaft gear set, and the large gear set are arranged inside the U-shaped cavity of the winch base (101). The front side of the left and right side walls of the inner cavity of the winch base (101) are fixedly installed with main shaft limiting sleeves. The main shaft gear set is movably arranged between the two main shaft limiting sleeves. The middle part of the left and right side walls of the inner cavity of the winch base (101) is fixedly installed with central shaft limiting sleeves. The central shaft gear set is movably arranged between the two central shaft limiting sleeves. The rear side of the left and right side walls of the inner cavity of the winch base (101) is movably arranged with a second limiting screw (606). The large gear set is fixedly sleeved on the second limiting screw (606).

2. The hand-cranked winch according to claim 1, characterized in that, The two main shaft limiting sleeves are a first main shaft limiting sleeve (102) on the upper left wall of the inner cavity of the winch seat (101) and a second main shaft limiting sleeve (105) on the upper right wall of the inner cavity of the winch seat (101). The first main shaft limiting sleeve (102) and the second main shaft limiting sleeve (105) are symmetrically arranged. The two central shaft limiting sleeves are a second central shaft limiting sleeve (104) on the left wall of the inner cavity of the winch seat (101) and a first central shaft limiting sleeve (103) on the right wall of the inner cavity of the winch seat (101). The second central shaft limiting sleeve (104) and the first central shaft limiting sleeve (103) are symmetrically arranged.

3. The hand-cranked winch according to claim 1, characterized in that, The front side of the second limiting screw (606) is provided with a first limiting screw (605). Both ends of the first limiting screw (605) and both ends of the second limiting screw (606) pass through the two walls of the inner cavity of the winch seat (101), and both ends of the first limiting screw (605) and the second limiting screw (606) are provided with nut sleeves.

4. The hand-cranked winch according to claim 2, characterized in that, The main shaft gear set consists of a main shaft (201), a main shaft gear (202), a brake disc (203), a brake pad (204), and a ratchet (205). The main shaft (201) is rotatably connected to the first main shaft limiting sleeve (102) and the second main shaft limiting sleeve (105). The main shaft gear (202) is sleeved on the main shaft (201). The main shaft (201) and the main shaft gear (202) are connected by a second semi-circular flat (603) at the mating point. The right end of the main shaft (201) is provided with threads. A crank assembly is installed on the right end of the main shaft (201). A nut sleeve is screwed to the right end of the main shaft (201).

5. The hand-cranked winch according to claim 4, characterized in that, The brake disc (203) is located on the right side of the main shaft gear (202), and a brake pad (204) is provided on the right side of the brake disc (203). The brake pad (204) is sleeved on the main shaft gear (202) and can slide on the main shaft gear (202).

6. The hand-cranked winch according to claim 4, characterized in that, The crank assembly includes a crank (501) and a handle (502). The crank (501) is sleeved on the main shaft (201). The inner thread of the crank (501) corresponds to the right thread of the main shaft (201). The handle (502) is fixedly installed at the end of the crank (501). By cranking the handle (502) in the forward direction, the inner thread of the crank (501) is pushed to the left along the right thread of the main shaft (201) until the brake pad (204) is tightened, thus realizing the braking function. A spring (604) is provided on the right side of the connection end between the crank (501) and the main shaft (201). The nut sleeve is used to limit the spring (604).

7. The hand-cranked winch according to claim 1, characterized in that, A reversible ratchet plate (106) is fixedly installed on the right side wall of the inner cavity of the winch seat (101), and the ratchet plate (106) is correspondingly arranged with the ratchet (205).

8. The hand-cranked winch according to claim 2, characterized in that, The central gear set consists of a central gear shaft (301), a central gear (302), and a small gear (303). The central gear shaft (301) is rotatably connected to the second central shaft limiting sleeve (104) and the first central shaft limiting sleeve (103). The central gear (302) and the small gear (303) are both sleeved on the central gear shaft (301). The mating points between the central gear (302) and the small gear (303) and the central gear shaft (301) are connected by a first semi-circular flat plate (601).

9. The hand-cranked winch according to claim 8, characterized in that, The central shaft gear set is located behind the main shaft gear set, and the main shaft gear set and the central shaft gear set are driven by the meshing of the main shaft gear (202) and the central gear (302). The central gear shaft limiting plate (602) is fixedly installed on the right side of the central gear shaft (301).

10. The hand-cranked winch according to claim 9, characterized in that, The large gear set consists of a large gear shaft (401), a large gear (402), a drum (403), and a drum limiting plate (404). The large gear shaft (401) is rotatably mounted on the winch seat (101). The drum (403) is fixedly mounted on the large gear shaft (401). A rope is wound on the drum (403). Drum limiting plates (404) are fixedly mounted on both the left and right ends of the drum (403). The drum limiting plates (404) can limit the wound rope. A large gear (402) is spaced apart on the right side of the drum (403). The large gear (402) is fixed on the large gear shaft (401). The large gear set is located behind the central shaft gear set, and the central shaft gear set and the large gear set are driven by meshing transmission through a small gear (303) and a large gear (402).

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