CN220283432U

CN220283432U - Braking winch

Info

Publication number: CN220283432U
Application number: CN202321542506.6U
Authority: CN
Inventors: 刘至国; 董岩法; 向恩和
Original assignee: Zhejiang Topsun Logistic Control Co Ltd
Current assignee: Zhejiang Topsun Logistic Control Co Ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2024-01-02
Anticipated expiration: 2033-06-15

Abstract

The utility model provides a brake winch, and belongs to the technical field of winches. The winch solves the technical problem that the degree of freedom of the existing winch brake operation is low. The winch comprises a support and a winch connected to the support, a rotating shaft capable of driving the winch to rotate is rotationally connected to the support, the winch further comprises a braking rod movably connected to the support or arranged on the rotating shaft, a torsion spring is sleeved on the periphery of the rotating shaft, a first free end of the torsion spring can abut against the support in a limiting mode along the circumferential direction of the rotating shaft, a second free end of the torsion spring can abut against the braking rod in a limiting mode along the circumferential direction of the rotating shaft, and when the braking rod is subjected to external force, the elastic force of the torsion spring can be overcome, and two free ends of the torsion spring are enabled to be close to each other. The brake winch can be firstly and rapidly dropped when the heavy object is put down, and then the brake intervention is automatically controlled at a proper position to control the speed, so that the brake winch can be stably dropped to the ground, and the degree of freedom of brake operation is improved.

Description

Braking winch

Technical Field

The utility model belongs to the technical field of winches, and relates to a brake winch.

Background

The winch is a small and light hoisting device which uses a winding drum to wind a steel wire rope or a chain to lift or pull a heavy object, and is also called a winch. The winch may vertically lift, horizontally or tilt the towing weight. The winch is divided into a manual winch, an electric winch and a hydraulic winch.

The patent with the publication number CN205241144U discloses a winch, which comprises a base, a brake assembly and a winch assembly, wherein the brake assembly is arranged in the base. The brake assembly comprises a rotating shaft, a first baffle plate, a first friction plate, a ratchet wheel, a second friction plate, a second baffle plate, a first gear and a pawl assembly, wherein the rotating shaft is rotatably arranged in the base, and the first baffle plate, the first friction plate, the ratchet wheel, the second friction plate, the second baffle plate and the first gear are sequentially sleeved on the rotating shaft; the first gear is in threaded connection with the rotating shaft; the pawl assembly is matched with the ratchet wheel and is used for stopping the ratchet wheel.

The winch structure can realize braking operation, but the braking operation is realized by the pawl and the ratchet wheel which are clamped, namely, the weight is always kept in a decelerating state when being lowered, and the degree of freedom of the operation is low when the weight is lowered.

Disclosure of Invention

The utility model provides a brake winch aiming at the problems existing in the prior art, and aims to solve the technical problems that: the degree of freedom of the existing winch braking operation is low.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a braking winch, includes the support and connects the capstan winch on the support, rotates on this support to be connected with can drive capstan winch pivoted pivot, its characterized in that still includes swing joint in on the support or the epaxial brake lever of pivot, the peripheral cover of this pivot is equipped with the torsional spring, the first free end of torsional spring can follow the circumference of this pivot with the spacing support of support is supported, the second free end of this torsional spring can follow the circumference of pivot with the spacing support of brake lever, can overcome when the brake lever receives external force the elasticity activity of torsional spring and make the two free ends of this torsional spring be close to each other.

The winch can roll up the rope through rotating relative to the bracket at a fixed appointed position, so that a heavy object is dragged or lifted, the rotating shaft can be driven to rotate by the hand rocker or the motor, and the rotating shaft and the winch can be in speed reduction transmission through the existing transmission device, so that larger traction force is generated by the winch; through setting up swing joint in support or epaxial brake lever, concrete brake lever can follow support slip or swing, also can revolute the form such as pivot swing, and set up the torsional spring in pivot periphery, make the first free end of torsional spring can be along pivot circumference with support spacing support, the second free end of torsional spring can be along pivot circumference with the spacing support of brake lever, and can overcome torsional spring elasticity activity when brake lever receives external force and make two free ends of torsional spring be close to each other, the pivot can not produce the interference between pivot and torsional spring in the rotation process like this, and when the heavy object of hanging down put, operating personnel can manually exert external force to make its activity in order to drive the second free end of torsional spring and be close to first free end, the part that torsion spring cover was located the pivot periphery is extruded and can radially inwards shrink like this, because the design internal diameter size of torsional spring natural state is only slightly more than the external diameter size of pivot, can gradually tighten around the pivot after operating the brake lever, and then weaken or prevent the pivot to continue to rotate, can be by oneself the whereabouts and can be controlled by oneself and fall down and be followed by oneself and the heavy object is moved in the rotation, and the speed of rotating is controlled by oneself and is moved down and is intervened when the heavy object is put down, and the speed of heavy object is put down, and is controlled by oneself and is suitable for realizing and is free to fall to control.

In the above-mentioned brake winch, the wire cross section of the torsion spring is rectangular. Therefore, the friction contact area between the torsion spring and the peripheral surface of the rotating shaft is increased, the friction resistance between the torsion spring and the rotating shaft during tightening is improved, and the stable and reliable braking effect is ensured.

In the above-mentioned brake winch, the first free end of the torsion spring is fastened and fixedly connected to the bracket. Therefore, the torsion spring is restrained to ensure that the position of the torsion spring relative to the bracket is kept to be determined, and the influence of random movement of the torsion spring on the braking effect is avoided.

In the above-mentioned brake winch, the second free end of the torsion spring is fixedly connected with the brake rod in a clamping manner. Because the torsion spring has the trend of keeping the shape under the natural state, the torsion spring can form constraint on the position of the brake rod, so that the brake rod can also keep a relatively stable position, and further, the operation and the control of an operator can be conveniently and safely carried out.

In the above-mentioned brake winch, the rotating shaft includes a mandrel and a sleeve circumferentially positioned with the mandrel, the sleeve is sleeved on the periphery of the mandrel, and the torsion spring is sleeved on the periphery of the sleeve. Therefore, the torsion spring can act on the sleeve with larger radial size when in tightening braking, and the torsion spring is favorable for braking the mandrel through smaller friction force.

In the above-mentioned brake winch, the sleeve and the mandrel are circumferentially positioned by a positioning pin inserted radially, and the position of the torsion spring is opposite to the position of the positioning pin. As a scheme, the sleeve and the mandrel are positioned through the radial pin shaft, the structure is simplified and reliable, the sleeved position of the torsion spring is opposite to the position of the positioning pin, and the torsion spring can limit the positioning pin to deviate from, so that the stability of the positioning structure is guaranteed.

In the above-mentioned brake winch, the brake lever is perpendicular to the rotating shaft and is rotatably sleeved on the periphery of the rotating shaft. Therefore, the brake rod is always acted by the fixed position and the second free end when in swinging, and the service life and the position action stability of the torsion spring are guaranteed.

In the above-mentioned brake winch, the torsional spring and the brake lever are both arranged on one end of the rotating shaft extending out of the bracket, the end of the rotating shaft is also provided with a limit clamp spring in a clamping manner, the limit clamp spring can prevent the brake lever from falling out, and the torsional spring and the brake lever are arranged between the limit clamp spring and the bracket. The phenomenon that the brake rod is interfered with a transmission device in the support when moving is avoided, braking safety is improved, and meanwhile, the limit clamp spring is limited to be stable in mounting position while the torsional spring and the brake rod are convenient to mount.

In the above-described brake winch, the brake lever has a pressing plate extending in the rotation shaft installation direction. Thus, the contact area between the hands of the operator and the brake rod is increased, the overlarge pressure of the pressed hands is avoided, and the comfort during control is improved.

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

1. the brake winch can be smoothly and reasonably used for braking in the process of automatically falling the heavy object, and the degree of freedom of braking operation is higher.

2. The brake winch is stable in brake operation and is not easy to damage the transmission device.

Drawings

Fig. 1 is a schematic perspective view of the present embodiment.

Fig. 2 is a schematic top view of the present embodiment.

Fig. 3 is a schematic view of section A-A in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic diagram of a partial structure explosion of the present embodiment.

Fig. 6 is an exploded view of a partial structure from another perspective of the present embodiment.

In the figure, 1, a bracket; 2. a winch;

3. a rotating shaft; 31. a mandrel; 32. a sleeve; 33. a positioning pin;

4. a brake lever; 41. pressing the plate;

5. a torsion spring; 51. a first free end; 52. a second free end;

6. and (5) limiting the snap springs.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-6, the brake winch comprises a bracket 1 and a winch 2 connected to the bracket 1, wherein a rotating shaft 3 capable of driving the winch 2 to rotate is rotationally connected to the bracket 1, the brake winch further comprises a brake lever 4 rotationally sleeved on the periphery of the rotating shaft 3, a torsion spring 5 is sleeved on the periphery of the rotating shaft 3, a first free end 51 of the torsion spring 5 can be in limiting abutment with the bracket 1 along the circumferential direction of the rotating shaft 3, a second free end 52 of the torsion spring 5 can be in limiting abutment with the brake lever 4 along the circumferential direction of the rotating shaft 3, and when the brake lever 4 is subjected to external force, the elastic force of the torsion spring 5 can be overcome to move and the two free ends of the torsion spring 5 are mutually close. The winch 2 can roll up the rope through rotating relative to the bracket 1 at a fixed appointed position, so as to drag or hoist a heavy object, the rotating shaft 3 can be driven to rotate by a hand rocker or a motor, and the rotating shaft 3 and the winch 2 can be driven by the existing transmission device to reduce speed, so that the winch 2 generates larger traction force; through setting up the brake lever 4 of swing joint on support 1 or pivot 3 to cover at pivot 3 periphery and establish torsional spring 5, make the first free end 51 of torsional spring 5 can be along pivot 3 circumference with support 1 spacing support, the second free end 52 of torsional spring 5 can be along pivot 3 circumference with the spacing support of brake lever 4, and can overcome torsional spring 5 elasticity activity when brake lever 4 receives external force and make the two free ends of torsional spring 5 be close to each other, in this way pivot 3 can not produce the interference between pivot 3 and torsional spring 5 in the rotation process, and when the heavy object of hanging down put, the operating personnel can manually apply external force to brake lever 4 makes its activity so as to drive the second free end 52 of torsional spring 5 and be close to first free end 51, the part that torsional spring 5 cover was located the pivot 3 periphery is extruded and can radially inwards shrink, because the design internal diameter size of torsional spring 5 natural state is only slightly greater than the external diameter size of pivot 3, can tie gradually at pivot 3 periphery after operating brake lever 4, and then perhaps prevent pivot 3 to continue to rotate, can be by the heavy object self-run back and not fall down in the rotation in the braking process, and the position can be controlled by oneself and fall down smoothly when the heavy object is operated and the speed of falling down is controlled to the appropriate, the degree of freedom is controlled to fall smoothly and is controlled to the speed. Preferably, the wire cross section of the torsion spring 5 is rectangular. Thus, the friction contact area between the torsion spring 5 and the outer peripheral surface of the rotating shaft 3 is increased, the friction resistance between the torsion spring 5 and the rotating shaft 3 during tightening is improved, and the stable and reliable braking effect is ensured. The outside of the bracket 1 is provided with a convex connecting column, and the first free end 51 of the torsion spring 5 is clamped and sleeved on the periphery of the connecting column. Therefore, the torsion spring 5 is restrained, so that the position of the torsion spring 5 relative to the bracket 1 is kept to be determined, and the influence of random movement of the torsion spring 5 on the braking effect is avoided. The second free end 52 of the torsion spring 5 is positioned and connected with the brake lever 4 by an existing clamping or hooking structure. Because the torsion spring 5 has a tendency of keeping the shape under the natural state, the torsion spring 5 can form constraint on the position of the brake rod 4, so that the brake rod 4 can also keep a relatively stable position, and an operator can conveniently and safely control the brake rod. The brake lever 4 is approximately perpendicular to the rotation shaft 3. In this way, the brake lever 4 is always acted by the fixed position and the second free end 52 during swinging, which is beneficial to guaranteeing the service life and the position action stability of the torsion spring 5. The torsion spring 5 and the brake lever 4 are both sleeved at one end of the rotating shaft 3 extending out of the bracket 1, the end of the rotating shaft 3 is also clamped with a limit clamp spring 6 capable of preventing the brake lever 4 from falling out, and the torsion spring 5 and the brake lever 4 are positioned between the limit clamp spring 6 and the bracket 1. The phenomenon that the brake rod 4 interferes with the transmission device in the bracket 1 when moving is avoided, the braking safety is improved, and meanwhile, the limit clamp spring 6 is limited to be stable in installation position while the torsional spring 5 and the brake rod 4 are convenient to install. The brake lever 4 has a pressing plate 41 extending in the direction in which the rotary shaft 3 is provided. Thus, the contact area between the hands of the operator and the brake rod 4 is increased, the overlarge pressure of the hands is avoided, and the comfort during control is improved.

As shown in fig. 3-6, the rotating shaft 3 comprises a mandrel 31 and a sleeve 32 circumferentially positioned with the mandrel 31, the sleeve 32 is sleeved on the periphery of the mandrel 31, and the torsion spring 5 is sleeved on the periphery of the sleeve 32. In this way, the torsion spring 5 acts on the sleeve 32 with a larger radial dimension during the tightening of the brake, which facilitates the braking of the spindle 31 by the torsion spring 5 with a smaller friction force. The sleeve 32 and the mandrel 31 are circumferentially positioned by a positioning pin 33 inserted radially, and the position of the torsion spring 5 is opposite to the position of the positioning pin 33. As a scheme, the sleeve 32 and the mandrel 31 are positioned through the radial pin shafts, the structure is simplified and reliable, the sleeved position of the torsion spring 5 is opposite to the position of the positioning pin 33, and the torsion spring 5 can limit the positioning pin 33 to deviate from, so that the stability of the positioning structure is guaranteed.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a brake winch, includes support (1) and connects capstan winch (2) on support (1), rotates on this support (1) and is connected with can drive pivot (3) of capstan winch (2) pivoted, its characterized in that still include swing joint in on support (1) or brake lever (4) on pivot (3), the periphery cover of this pivot (3) is equipped with torsional spring (5), first free end (51) of torsional spring (5) can follow the circumference of this pivot (3) with support (1) spacing support, second free end (52) of this torsional spring (5) can follow the circumference of pivot (3) with brake lever (4) spacing support, can overcome when brake lever (4) receive external force torsional spring (5) elasticity activity and make two free ends of this torsional spring (5) be close to each other.

2. A brake winch according to claim 1, characterized in that the wire cross section of the torsion spring (5) is rectangular.

3. The brake winch according to claim 1, characterized in that the first free end (51) of the torsion spring (5) is fastened to the bracket (1) in a snap-fit manner.

4. A brake winch according to claim 3, characterized in that the second free end (52) of the torsion spring (5) is fastened in a snap-fit connection with the brake lever (4).

5. The brake winch according to claim 1 or 2 or 3 or 4, wherein the rotating shaft (3) comprises a mandrel (31) and a sleeve (32) circumferentially positioned with the mandrel (31), the sleeve (32) is sleeved on the periphery of the mandrel (31), and the torsion spring (5) is sleeved on the periphery of the sleeve (32).

6. The brake winch according to claim 5, characterized in that the sleeve (32) is positioned circumferentially with the spindle (31) by means of a radially inserted positioning pin (33), the torsion spring (5) being positioned opposite the positioning pin (33).

7. The brake winch according to claim 1 or 2 or 3 or 4, characterized in that the brake lever (4) is perpendicular to the rotating shaft (3) and is rotatably sleeved on the periphery of the rotating shaft (3).

8. The brake winch according to claim 7, characterized in that the torsion spring (5) and the brake lever (4) are both sleeved at one end of the rotating shaft (3) extending out of the bracket (1), the end of the rotating shaft (3) is also clamped with a limit clamp spring (6) capable of preventing the brake lever (4) from being separated, and the torsion spring (5) and the brake lever (4) are located between the limit clamp spring (6) and the bracket (1).

9. A brake winch according to claim 1 or 2 or 3 or 4, characterized in that the brake lever (4) has a pressing plate (41) extending in the direction of the arrangement of the spindle (3).