CN221195924U - Light single-tooth double-hook tensioner - Google Patents

Abstract

The application discloses a lightweight single-tooth double-hook tensioner which comprises a rocker assembly, a ratchet pawl mechanism and a self-locking structure, wherein the ratchet pawl mechanism comprises a ratchet part and a pawl part, the pawl part comprises a clamping position part, a clamping position matching part is arranged at an action site of the pawl part, and when the pawl part interacts with the ratchet part, the clamping position part and the clamping position matching part form concave-convex matching so as to increase the interaction area between the pawl part and the ratchet part, and the abrasion of the ratchet part and the pawl part at the action site can be effectively reduced, so that the service life and the stability in use are effectively ensured.

Description

Light single-tooth double-hook tensioner

Technical Field

The application relates to the technical field of tensioners, in particular to a lightweight single-tooth double-hook tensioner.

Background

The tensioner is a tool for tensioning ropes, chains or steel cables, plays a role in fixing goods during transportation, movement, shipment or storage of the goods, and is not easy to fall off after the goods are locked by the tensioner. The tightening rope is widely used in various fields of ports, railways, buildings and the like, and the principle is that a ratchet wheel and a pawl are matched with a handheld rocker to tighten a steel wire rope.

When the existing ratchet strainer is strained, the tip of the pawl and the tooth slot of the ratchet wheel are mutually abutted and driven, so that the purpose of tensioning the steel wire rope is realized, but the contact between the pawl and the ratchet wheel is realized through the interaction between the tip of the bottom of the pawl and the tooth slot, the acting area is small, the acting frequency of the pawl and the tooth slot is high, and therefore, the abrasion is easy to generate, and the service life is reduced.

Disclosure of Invention

The application aims to provide a wear-resistant light single-tooth double-hook tensioner.

In order to achieve the above purpose, the application adopts the following technical scheme: the utility model provides a lightweight single tooth double hook strainer, includes rocker subassembly, ratchet pawl mechanism and auto-lock structure, ratchet pawl mechanism includes ratchet portion and pawl portion, pawl portion includes screens portion, the pawl portion is equipped with screens cooperation portion at the action site, pawl portion with when ratchet portion interacted, screens portion with screens cooperation portion forms unsmooth cooperation, in order to increase the pawl portion with the area of interaction between the ratchet portion.

Preferably, the ratchet part comprises a pair of gears arranged at intervals, a fixing piece is arranged between the gears, protrusions with the thickness smaller than that of the intervals between the gears are arranged on the side face and the outside of the bottom face in the bottom area of the pawl part, the intervals between the gears form the clamping matching part, the protrusions form the clamping part, when the pawl part interacts with the ratchet part, the protrusions are embedded into the intervals between the gears, and the bottom face and the side face of the pawl part which are positioned on two sides of the protrusions respectively act on tooth grooves corresponding to the two gears.

Furthermore, the inner side of the tooth groove of the gear is subjected to fillet treatment, and the pawl part is provided with an action part subjected to fillet treatment corresponding to the tooth groove.

Further, the fixing piece comprises a plurality of key grooves on the inner side of the fixing piece, a transmission shaft is arranged in the middle of the gear, the transmission shaft is connected with the rocker assembly, a protrusion is arranged on the outer side of the transmission shaft, and the fixing piece is installed on the outer side of the transmission shaft and is driven by the transmission shaft through the protrusion and the key grooves.

Further, the side of mounting still is equipped with the screw thread groove, the outer wall of transmission shaft is equipped with corresponding screw hole, the mounting is through the keyway with protruding cooperation is spacing after, utilizes the bolt to insert the screw thread groove with the screw hole carries out fixed mounting.

As another preferable aspect, the ratchet pawl mechanism includes at least one gear, a bottom wall and a side wall in each tooth slot of the gear are each opened with a concave portion, a bottom and a side face of the pawl portion are provided with convex portions, the concave portions form the click fit portions, the convex portions form the click portions, when the pawl portion interacts with the ratchet portion, the convex portions enter the concave portions, a bottom face and a side face of the convex portions respectively act with the bottom face and the side face of the concave portion, and a bottom face of the pawl portion acts with the tooth slot bottom wall of the gear.

Further, the whole concave part is in a folded shape and is two columns, the angle of the folded shape is consistent with the angle of the inner side of the tooth groove of the gear, and correspondingly, the convex part is also in a folded shape.

Further, the convex part is a block body which is formed independently, the upper surface of the convex part is provided with a mounting hole, and the convex part is detachably mounted on the corresponding pawl part through the mounting hole

Further, the recess is formed with a slope of decreasing depth from inside to outside at a portion located on the bottom wall of the tooth slot of the gear, and the protrusion on the detent portion is separated along the slope when the rocker assembly is returned.

Preferably, the lightweight single-tooth double-hook tensioner comprises a pair of hooks, wherein one hook is fixedly mounted on the shell, and the other hook is connected with a rope of the lightweight single-tooth double-hook tensioner.

Compared with the prior art, the application has the beneficial effects that:

By increasing the action areas of the ratchet wheel and the pawl, the abrasion of the ratchet wheel and the pawl at the action site can be effectively reduced, so that the service life and the stability in use are effectively ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a side view of the ratchet-pawl mechanism.

Fig. 3 is a schematic view of the structure of the lower ratchet part of the first ratchet-pawl mechanism.

Fig. 4 is a schematic view of the first ratchet-pawl mechanism with the ratchet portion and pawl portion engaged.

Fig. 5 is a schematic view of a ratchet portion of a second ratchet-pawl mechanism.

In the figure: 1. a lifting hook; 2. a housing; 3. a rocker assembly; 4. a ratchet pawl mechanism; 5. a rope; 7. a pawl portion; 8. tooth slots; 9. a gear; 10. a transmission shaft; 11. a fixing member; 12. a threaded hole; 13. a spacing space; 14. a key slot; 15. a protrusion; 16. a concave portion; 17. and (5) an inclined plane.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Examples:

Referring to fig. 1-5, the present embodiment proposes a lightweight single-tooth double-hook tensioner, which includes a pair of hooks 1, a housing 2, and a rope 5 (typically, a wire rope), wherein one hook 1 is fixedly mounted on the housing 2, the other hook 1 is connected with the rope 5 of the tensioner, and further includes a roller shaft for winding the wire rope and a ratchet pawl mechanism 4 for driving the roller shaft to rotate, and a rocker assembly 3 for driving the ratchet pawl mechanism 4 to rotate is further disposed outside the housing 2, and typically, the tensioner further includes a self-locking structure for preventing ratchet from reversing, and the self-locking structure is an existing structure in the art, thus not described in detail.

The rocker assembly 3 can drive the ratchet pawl mechanism 4 to further drive the roll shaft to rotate, and the steel wire rope is wound on the roll shaft. When the tensioner is not pulled with an object, the tensioner is in an initial state, the steel wire rope is in a fully wound state, the pawl is firstly buckled to separate the ratchet pawl when the tensioner is used, and the ratchet pawl is meshed again after the steel wire rope is pulled to the actual required length, and then the tensioner is tensioned through the rocker assembly 3.

Referring to fig. 1, the rocker assembly 3 in this embodiment preferably adopts a structure of back and forth cyclic swing, that is, continuous tightening is achieved by back and forth cyclic swing of the rocker assembly 3, which is an existing type of ratchet tensioner, and its principle and specific structure are common general knowledge in the art, so that detailed description is omitted.

The ratchet pawl mechanism 4 in this embodiment includes a ratchet portion and a pawl portion 6, the pawl portion 6 includes a detent portion, the pawl portion 6 is provided with a detent mating portion at an action site, when the pawl portion 6 interacts with the ratchet portion, the detent portion and the detent mating portion form a concave-convex mating to increase an area of interaction between the detent portion 6 and the ratchet portion, in the existing tensioner, when the pawl acts on the ratchet, the action site is generally only a very small range at the bottommost portion of the pawl, and when each time is used, the pawl and the ratchet need to act repeatedly, which makes abrasion between the two relatively large, and the action site relatively small causes the action site to have relatively large pressure under the same acting force, so abrasion also occurs more easily, so that through the increased action area in this embodiment, abrasion of the two at the action site can be effectively reduced, thereby effectively ensuring service life and stability when in use.

In order to achieve the above-described purpose of increasing the action area by the engagement of the detent portion and the detent, two preferred embodiments are presented below.

First, the ratchet part includes a pair of gears 9 that the interval set up, be equipped with mounting 11 between a pair of gears 9, a pair of gears 9 are fixed, therefore can be regarded as single tooth structure, the side and the bottom surface outside in the bottom region of pawl part 6 are equipped with thickness is less than the protruding 15 of interval between a pair of gears 9, interval space 13 between a pair of gears 9 forms screens mating part, protruding 15 forms screens portion, when pawl part 6 and ratchet part interact, protruding 15 imbeds in the interval between a pair of gears 9, the bottom surface and the side of pawl part 6 that are located protruding 15 both sides are respectively acted on tooth's socket 8 department that two gears 9 correspond.

The inner sides of the tooth grooves 8 of the gears 9 are rounded, and the pawl parts 6 are provided with rounded action parts corresponding to the tooth grooves 8.

Wherein mounting 11 includes its inboard a plurality of keyway 14, and the middle part of gear 9 has transmission shaft 10, and transmission shaft 10 meets with the remote sensing subassembly and rotates, and the outside of transmission shaft 10 is equipped with protruding 15, still is equipped with the screw thread groove in the side of mounting 11, is equipped with corresponding screw hole 12 at the outer wall of transmission shaft 10, and mounting 11 is spacing through the cooperation of keyway 14 and protruding 15 to carry out fixed mounting through the bolt, such installation has better stability and realizes stable transmission.

Second, the ratchet pawl mechanism 4 includes at least one gear 9, the bottom wall and the sidewall in each tooth slot 8 of the gear 9 are all opened with concave parts, the bottom and the side of the pawl portion 6 are equipped with convex parts, the concave parts form the clamping matching parts, the convex parts form the clamping parts, when the pawl portion 6 interacts with the ratchet portion, the convex parts enter the concave parts, the bottom surface and the side of the convex parts respectively act with the bottom surface and the side of the concave parts, the bottom surface of the pawl portion 6 acts with the bottom wall of the tooth slot 8 of the gear 9, the action area of the ratchet and the pawl can also be increased through the matching of the concave parts and the convex parts, and thus the purpose of reducing abrasion is achieved.

Further, the whole concave part is in a folded shape of two columns, the angle of the folded shape is consistent with the angle of the inner side of the tooth groove 8 of the gear 9, and correspondingly the convex part is also in a folded shape, wherein the convex part can be a block body which is formed independently, and the upper surface of the convex part is provided with a mounting hole through which the convex part can be mounted on the corresponding pawl part 6.

The concave part is formed with a slope 17 with a reduced depth from inside to outside at the part on the bottom wall of the tooth socket 8 of the gear 9, when the rocker assembly 3 returns, the convex part on the pawl part 6 moves away along the slope, so that the pawl part 6 is convenient to leave the ratchet part, and after the concave part is opened, the concave part interferes with the pawl part 6 when the pawl part 6 leaves the ratchet part.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a lightweight single tooth double hook strainer, includes casing, rocker subassembly, ratchet pawl mechanism and auto-lock structure, ratchet pawl mechanism includes ratchet portion and pawl portion, its characterized in that, pawl portion includes screens portion, the pawl portion is equipped with screens cooperation portion at the action site, pawl portion with when ratchet portion interacts, screens portion with screens cooperation portion forms unsmooth cooperation, in order to increase the pawl portion with the area of interaction between the ratchet portion.

2. The lightweight single-tooth double-hook tensioner as claimed in claim 1, wherein the ratchet part includes a pair of gears arranged at intervals, a fixing member is provided between the pair of gears, a side surface and an outside of the bottom surface in a bottom region of the ratchet part are provided with protrusions having a thickness smaller than that of the interval between the pair of gears, the interval space between the pair of gears forms the click fit part, the protrusions form the click part, when the ratchet part interacts with the ratchet part, the protrusions are embedded into the interval between the pair of gears, and the bottom surface and the side surface of the ratchet part located at both sides of the protrusions respectively act on tooth grooves corresponding to the two gears.

3. The lightweight single-tooth double-hook tensioner as claimed in claim 2, wherein the inside of the tooth slot of the gear is rounded, and the pawl portion is provided with a rounded action portion corresponding to the tooth slot.

4. The lightweight single-tooth double-hook tensioner as in claim 2, wherein the fixing member comprises a plurality of key grooves on the inner side thereof, a transmission shaft is arranged in the middle of the gear, the transmission shaft is connected with the rocker assembly, a protrusion is arranged on the outer side of the transmission shaft, and the fixing member is arranged on the outer side of the transmission shaft and is driven by the transmission shaft through the protrusion and the key grooves.

5. The lightweight single-tooth double-hook tensioner as in claim 4, wherein the side of the fixing member is further provided with a threaded groove, the outer wall of the transmission shaft is provided with a corresponding threaded hole, and the fixing member is fixedly mounted by inserting a bolt into the threaded groove and the threaded hole after being limited by the key groove and the protrusion.

6. The lightweight single-tooth double-hook tensioner as in claim 1, wherein the ratchet pawl mechanism comprises at least one gear, wherein the bottom wall and the side wall in each tooth slot of the gear are each provided with a recess, the bottom and the side surfaces of the pawl portion are provided with protrusions, the recesses form the click mating portions, the protrusions form the click portions, when the pawl portion interacts with the ratchet portion, the protrusions enter the recesses, the bottom and the side surfaces of the protrusions interact with the bottom and the side surfaces of the recesses, respectively, and the bottom surface of the pawl portion interacts with the tooth slot bottom wall of the gear.

7. The lightweight single-tooth double-hook tensioner as in claim 6, wherein the recess is integrally formed as two cylinders in a dogleg shape, and the angle of the dogleg shape is identical to the angle inside the tooth slot of the gear, and the projection is correspondingly formed as a dogleg shape.

8. The lightweight single tooth double hook tensioner as in claim 7, wherein the recess is formed with a chamfer of decreasing inside-to-outside depth at a portion on the tooth slot bottom wall of the gear, the protrusion on the pawl portion moving away along the chamfer as the rocker assembly returns.

9. The lightweight single-tooth double-hook tensioner as in claim 7, wherein the boss is a separately formed block, the upper surface of the boss being provided with mounting holes through which the boss is detachably mounted to the corresponding pawl portion.

10. The lightweight single tooth double hook tensioner as in claim 1, comprising a pair of hooks, one of said hooks being fixedly mounted to said housing and the other of said hooks being engaged with a cord of said lightweight single tooth double hook tensioner.