CN213387567U

CN213387567U - Winch

Info

Publication number: CN213387567U
Application number: CN202021306002.0U
Authority: CN
Inventors: 朱正中
Original assignee: Zhejiang Topsun Logistic Control Co Ltd
Current assignee: Zhejiang Topsun Logistic Control Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-06-08
Anticipated expiration: 2030-07-06

Abstract

The utility model provides a winch belongs to mechanical technical field. The winch solves the problems that when a tool is used for separating a pawl from a ratchet in the existing winch, the ratchet is easily damaged and the separation difficulty is large. The ratchet wheel fixing device comprises a support and a belt shaft which is rotatably connected to the support, one end of the belt shaft extends out of the support and is fixedly connected with a ratchet wheel, a pawl is hinged to one side face, away from the support, of the ratchet wheel, and a stress portion formed by extending outwards relative to the plane where the outer side face is located is arranged on the pawl. This winch increases the atress area through set up on the pawl for the outside atress portion that extends of ratchet outside, reduces the degree of difficulty that the user beaten, and the rethread sets up the atress portion and keeps away from the distance between one side of support and the installation face, guarantees that atress portion and ratchet stagger the setting, guarantees to beat the instrument of use and can not collide on the ratchet.

Description

Winch

Technical Field

The utility model belongs to the technical field of machinery, a winch is related to.

Background

The winch is a light and small hoisting device for lifting or pulling heavy objects by winding a steel wire rope or a chain on a winding drum, is an important binding tool, is commonly used for binding goods on a freight car and prevents the goods from falling off or colliding. The existing winch generally comprises a support, a binding belt, a torsion spring, a belt shaft, a ratchet wheel arranged at one end of the belt shaft and a pawl capable of being matched with the ratchet wheel, wherein the belt shaft is connected to the support and can rotate; the pawl is rotatably arranged on the support, the torsion spring is arranged between the pawl and the support, the pawl is enabled to be meshed with the ratchet, and the belt shaft moves in a single direction in the using process due to the meshing of the pawl and the ratchet, so that the winding/loosening of the binding belt is realized, and the rotation of the ratchet wheel is effectively prevented.

However, if the binding belt needs to be loosened/wound from the belt shaft, the belt shaft needs to move reversely, the matching relation between the pawl and the ratchet wheel needs to be released, namely the ratchet wheel is disengaged from the ratchet wheel, and the pawl is difficult to disengage from the ratchet wheel by the conventional matching mode of the pawl and the ratchet wheel. Therefore, a winch belt shaft is designed and Chinese patent is applied (application number: CN200910148555), the winch belt shaft comprises a bracket, a belt shaft, a spring, a pawl and a ratchet wheel, wherein, the ratchet wheel which can be matched with the ratchet wheel extends outwards from the middle part of the side surface of the pawl, the ratchet wheel is meshed with the ratchet wheel to realize the limiting of the ratchet wheel in one-way movement, and the ratchet wheel rotates reversely by applying force to the end part of the pawl to realize the disengagement of the ratchet wheel and the ratchet wheel in reverse movement.

In use, a significant amount of force is typically required to disengage the ratchet from the pawl, and therefore a tool is often required, but the above-described arrangement suffers from the following disadvantages: 1. when the end part of the pawl is knocked by a tool, the end part of the pawl often collides with the ratchet on the ratchet wheel, so that the ratchet wheel is easily damaged; 2. if the resistance to be overcome by the separation pawl and the ratchet wheel is large, the end needs to be knocked for many times, but the force bearing area is small, and the force needs to be repeatedly concentrated in a small range of the end, so that the knocking difficulty is large, and the separation is difficult.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a winch, the utility model aims to solve the technical problem that: when a tool is used in the existing winch to separate the pawl from the ratchet, the ratchet is easily damaged and the separation difficulty is high.

The purpose of the utility model can be realized by the following technical proposal: the winch comprises a support and a belt shaft which is rotatably connected to the support, wherein one end of the belt shaft extends out of the support and is fixedly connected with a ratchet wheel.

The winch is different from the conventional winch which applies external force to the end part of the pawl, and overcomes the space limitation of a user when the external force is applied by arranging the stress part which extends outwards relative to the plane where the outer side surface of the ratchet wheel is located on the pawl; meanwhile, in the process of disengaging the ratchet wheel of the pawl, the stress points between the ratchet wheel and the pawl are mainly concentrated on the engaged ratchet teeth, the pawl is used as a power arm, the extended stress part is equivalent to the extension of the power arm to a certain extent, the magnitude of applied force can be reduced, the ratchet wheel and the pawl can be separated more easily, and the use is simple and convenient.

In the winch, a side surface of the bracket, which is attached to the ratchet wheel, is an installation surface, and a distance between a plane of the side surface of the stress part, which is far away from the bracket, and the installation surface is larger than a distance between a plane of an outer side surface of the ratchet wheel and the installation surface. The stress part is located the pawl and keeps away from one side of support, and the distance setting between the one side that the support was kept away from to rethread stress part and the installation face guarantees that stress part has the space that supplies the instrument to beat the application of force, guarantees stress part and ratchet setting of staggering promptly, and the ratchet on the ratchet can not collided to the instrument to guarantee that the ratchet can not receive the damage, and the distance length that should set up has prolonged above-mentioned power arm in other words, more does benefit to the separation of ratchet and pawl.

In the winch, the pawl comprises a plate-shaped connecting part and a stress part arranged in parallel with the support, one end of the connecting part is hinged to the support, the other end of the connecting part is connected with the stress part, the connecting part is provided with a ratchet capable of being meshed with the ratchet, and the side surface of one side of the ratchet, which is far away from the support, and the outer side surface of the ratchet are located on the same plane. Through the design, the maximum meshing area of the ratchet and the ratchet wheel can be ensured, the stability of the meshed ratchet is ensured, and the part of the ratchet does not protrude relative to the ratchet wheel, so that the ratchet is not knocked when the stress part is knocked, and the damage of the ratchet is prevented.

In the winch, the force-bearing part comprises a pressing part and a reinforcing part, and the pressing part and the reinforcing part are in smooth transition connection and form a step-shaped structure. The external force dispersion that the rib will receive can strengthen the stability of this structure to the pawl on, makes the structural strength of atress portion higher, can bear bigger pressure to be the structure of step form, realize lightening pawl weight, realize the lightweight under the condition that does not influence stability.

In the winch, the bottom surface of the force-receiving portion is flush with the bottom surface of the connecting portion, the top surface of the pressing portion is flush with the top surface of the connecting portion, and the bottom surface of the force-receiving portion is in smooth transition connection with the top surface of the pressing portion through the arc surface. Through to the atress portion with press the design of splenium top surface, make the lateral surface of pawl be smooth state on the whole, can avoid between atress portion and the pawl relative bulge to cause the fish tail to the user to prevent that the bulge from beating down because the atress is unstable, taking place the damage and dropping, set up like this simultaneously and more can guarantee that the atress portion remains stable all the time under the atress condition.

In the winch, the pressing portion is located at an end of the pawl, and the length of the reinforcing portion is greater than that of the pressing portion. The tip of pressing the portion of pressing and being located the pawl can reduce and exert the size of pressing the portion external force to increase the length setting of reinforcement, effective dispersion is exerted and is being pressed the external force on the portion, is favorable to the stability of structure.

In the winch, the force receiving portion and the pawl are integrally formed. The design reduces the manufacturing difficulty and saves the manufacturing cost.

In the winch, one end of the pawl is hinged to the bracket, the other end of the pawl extends out of the bracket, and the stress part is located at the extending end of the pawl and at one side of the pawl close to the bracket. The structure can also realize that the tool cannot collide with the ratchet wheel when knocking the stress part, and the extension setting can reduce the force applied to the stress part by a user at the pawl, thereby reducing the difficulty of separation of the clamping jaw and the ratchet wheel.

Compared with the prior art, the winch has the following advantages:

1. through set up the atress portion that extends outward for the ratchet outside on the pawl, increase the atress scope, reduce the degree of difficulty that the user separated pawl and ratchet to when guaranteeing to beat, the instrument can not collide with the ratchet.

2. The distance between the side face of one side, far away from the support, of the stress part and the mounting face is arranged, the stress part and the ratchet wheel are arranged in a staggered mode, it is further guaranteed that a tool used for beating cannot collide with the ratchet wheel, meanwhile, the stress part is equivalent to the fact that the power arm is prolonged, and the ratchet wheel is more beneficial to overcoming resistance of the pawl and separating the pawl from the ratchet wheel.

3. The stability of this structure can then be strengthened through the rib in the stress part, makes the structural strength of stress part higher, can bear bigger pressure.

4. The stress part is step-shaped, so that the weight of the pawl is reduced under the condition that the stability is not influenced, and the weight is reduced.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment.

Fig. 2 is a side view of the first embodiment.

Fig. 3 is a schematic perspective view of a pawl according to a first embodiment.

Fig. 4 is a schematic perspective view of a pawl according to a first embodiment.

FIG. 5 is a top view of the pawl according to the first embodiment.

Fig. 6 is a schematic perspective view of a pawl according to a second embodiment.

In the figure, 1, a bracket; 1a, a mounting surface; 2. a belt shaft; 3. a ratchet wheel; 4. a pawl; 4a, a connecting part; 4b, a ratchet; 5. a force receiving portion; 5a pressing part; 5b, a reinforcing part; 5c, arc surface.

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.

Example one

As shown in fig. 1 and 2, the winch comprises a U-shaped bracket 1, a belt shaft 2 rotatably connected to the bracket 1, a ratchet wheel 3 fixed at one end of the belt shaft 2, and a pawl 4 hinged to the bracket 1, wherein the pawl 4 is provided with a force receiving portion 5 formed by extending outwards, the pawl 4 and the ratchet wheel 3 are both positioned at one side of the bracket 1, the force receiving portion 5 is positioned at one side of the pawl 4 far away from the bracket 1, and the force receiving portion 5 is formed by extending outwards relative to a plane where the outer side surface of the ratchet wheel 3 is positioned.

Specifically, the belt shaft 2 transversely penetrates through the support 1, two ends of the belt shaft 2 extend out of the support 1, one end of the belt shaft is fixedly connected with the ratchet wheel 3, the pawl 4 is hinged to one side face of the support 1, the ratchet wheel 4 comprises a plate-shaped connecting portion 4a and a stress portion 5 arranged in parallel with the support 1, one end of the connecting portion 4a is hinged to the support 1, the other end of the connecting portion is connected with the stress portion 5, a protruding ratchet 4b is arranged on the connecting portion 4a, the ratchet 4b can be meshed with the ratchet wheel 3, one side face, far away from the support 1, of the ratchet wheel 4b and the outer side face of the ratchet wheel 3 are located on the same plane, the stability of meshing between the pawl 4 and the ratchet wheel 3 is guaranteed, and tools are prevented from knocking and colliding with the protruding pawl 4 after.

As shown in FIG. 1, a side surface of the bracket 1, which is close to the ratchet 3, is taken as an installation surface 1a, a side surface of the ratchet 3, which is far away from the bracket 1, is taken as an outer side surface, and a distance between a plane of the side surface of the stress part 5, which is far away from the bracket 1, and the installation surface is greater than a distance between a plane of the outer side surface of the ratchet 3 and the installation surface, so that the stress part 5 is ensured to protrude relative to the ratchet 3, and the damage to the ratchet 3 caused by the impact of the tool.

In order to better strengthen the structure of the force-bearing part 5, as shown in fig. 3 and fig. 4, the force-bearing part 5 is divided into a pressing part 5d and a reinforcing part 5e, the pressing part 5d and the reinforcing part 5e are smoothly transited and connected and form a step-shaped structure, wherein the pressing part 5d is located at the end of the pawl 4, the reinforcing part 5e is plate-shaped, one end of the reinforcing part 5e is fixedly connected with the pressing part 5d, and the other end extends in a direction away from the pressing part 5 d.

As shown in fig. 3, 4 and 5, the bottom surface of the force-receiving portion 5 is flush with the bottom surface of the connecting portion 4a, the top surface of the pressing portion 5a is flush with the top surface of the connecting portion 4a, and the bottom surface of the force-receiving portion 5 and the top surface of the pressing portion 5a are connected in a smooth transition manner through the arc surface 5c, so that the three side surfaces of the pawl do not have relatively protruding portions, and the protruding portions are effectively prevented from scratching hands or being broken due to uneven force when the pawl is knocked.

In order to ensure the stability of the structure, as shown in fig. 3 and 4, the reinforcing portion 5e is disposed below the pressing portion 5d, and the lower surface thereof is disposed on the same plane as the lower surface of the pawl 4, and the length of the reinforcing portion 5e is greater than that of the pressing portion 5d, which is advantageous for dispersing the applied force from the outside, thereby enhancing the stability of the structure.

Example two

The structure principle of this embodiment is basically the same as the structure of embodiment one, and the difference lies in, as shown in fig. 6, after one end of pawl 4 articulates on support 1, the other end extends support 1, forced section 5 is located the extension and is served and be located one side that pawl 4 is close to support 1, the state that is in the range from top to bottom of forced section 5 and ratchet 3 promptly, the ratchet 3 is kept away from to the tip that the last reinforcing part 5e of forced section 5 is close to support 1, guarantee to have certain space between ratchet 3 and the forced section 5, prevent that ratchet 3 from rotating and the tip of reinforcing part 5e and colliding. This technical problem still can be solved to this structure, guarantees the distance between atress portion 5 and the ratchet 3 through the extension end of pawl 4, guarantees that atress portion 5 can not block the shell with ratchet 3.

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 force receiving portion, pressing portion, etc. are used more herein, 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 winch comprises a support (1) and a belt shaft (2) rotatably connected to the support (1), wherein one end of the belt shaft (2) extends out of the support (1) and is fixedly connected with a ratchet wheel (3), the winch is characterized in that a pawl (4) is hinged to one side face, on the support (1), of the ratchet wheel (3), the side face, away from the support (1), of one side is an outer side face, and a stress portion (5) formed by outwards extending the plane where the outer side face is located is arranged on the pawl (4).

2. The winch according to claim 1, wherein the side surface of the bracket (1) which is in contact with the ratchet wheel (3) is a mounting surface (1a), and the distance between the plane of the side surface of the stress part (5) which is far away from the bracket (1) and the mounting surface (1a) is larger than the distance between the plane of the outer side surface of the ratchet wheel (3) and the mounting surface (1 a).

3. The winch according to claim 2, characterized in that the pawl (4) comprises a plate-shaped connecting part (4a) and a force-bearing part (5) arranged parallel to the bracket (1), one end of the connecting part (4a) is hinged to the bracket (1), the other end is connected to the force-bearing part (5), the connecting part (4a) is provided with a ratchet (4b) capable of being engaged with the ratchet (3), and the side surface of the ratchet (4b) far away from the bracket (1) is in the same plane with the outer side surface of the ratchet (3).

4. The winch according to claim 3, characterized in that said force-receiving portion (5) comprises a pressing portion (5a) and a reinforcing portion (5b), said pressing portion (5a) and reinforcing portion (5b) being smoothly transitionally connected and forming a step-like structure.

5. The winch according to claim 4, wherein the bottom surface of the force-bearing portion (5) is flush with the bottom surface of the connecting portion (4a), the top surface of the pressing portion (5a) is flush with the top surface of the connecting portion (4a), and the bottom surface of the force-bearing portion (5) is in smooth transition connection with the top surface of the pressing portion (5a) through an arc surface (5 c).

6. A winch according to claim 4, characterized in that said pressing portion (5a) is located at the end of the pawl (4) and the length of said reinforcing portion (5b) is greater than the length of the pressing portion (5 a).

7. The winch according to any of claims 1 to 6, characterized in that said force-receiving portion (5) is formed integrally with the connecting portion (4 a).

8. The winch according to claim 2, characterized in that said pawl (4) is hinged to the bracket (1) at one end and extends out of the bracket (1) at the other end, and said force-receiving portion (5) is located at the extended end of the pawl (4) and at the side of the pawl (4) close to the bracket (1).