CN214059709U - Hoisting rope pre-tightening device and engineering machinery - Google Patents
Hoisting rope pre-tightening device and engineering machinery Download PDFInfo
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- CN214059709U CN214059709U CN202022604889.8U CN202022604889U CN214059709U CN 214059709 U CN214059709 U CN 214059709U CN 202022604889 U CN202022604889 U CN 202022604889U CN 214059709 U CN214059709 U CN 214059709U
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Abstract
The embodiment of the utility model provides a hoist rope preloading device and engineering machinery, the hoist rope preloading device includes mounting bracket, fitting piece, clamping piece and actuating mechanism; the fitting piece is arranged on the mounting frame; the driving mechanism is arranged on the mounting frame; the clamping member is spaced from and opposite the mating member, and a drive mechanism is in power coupling connection with the clamping member for driving the clamping member to move toward the mating member. The embodiment of the utility model provides a hoist rope preloading device and engineering machine tool draw close each other and press from both sides tight hoist rope through clamping piece and fitting piece, and the clamping piece can produce the frictional force opposite with the hoist direction to the hoist rope with the fitting piece to taut hoist rope avoids appearing the problem that the pretightning force can not reach the requirement.
Description
Technical Field
The utility model relates to an engineering machine tool technical field especially relates to a hoist rope preloading device and engineering machine tool.
Background
Some engineering machinery can be provided with a winch, and when the pretightening force of a winch rope of the winch does not meet the requirement, the phenomenon of rope disorder easily occurs. For example, when a crane works, a working condition that a heavy object is hoisted from a high position to a lower position is met, the lifting hook needs to be retracted after the heavy object is hoisted down to perform the next operation, but the hoisting rope is easy to disorder and is not tight due to the fact that the weight of the lifting hook is light in the hoisting process of an empty hook, and the hoisting rope is easy to wind, so that the phenomenon of rope sinking is easy to generate in the hoisting rope descending process of the heavy object.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a hoist rope preloading device and engineering machine tool for solve the problem that indiscriminate rope appears easily when the pretightning force of the hoist rope of current hoist engine can not reach the requirement.
An embodiment of the utility model provides a hoist rope preloading device, include:
a mounting frame;
the fitting piece is arranged on the mounting frame;
the driving mechanism is arranged on the mounting frame; and the number of the first and second groups,
the clamping piece is opposite to the matched piece in a spaced mode, and the driving mechanism is connected with the clamping piece in a power coupling mode and used for driving the clamping piece to move towards the matched piece.
According to the utility model discloses a hoist rope preloading device, actuating mechanism includes reinforcement formula drive mechanism, reinforcement formula drive mechanism connects the clamping piece, reinforcement formula drive mechanism keeps away from the one end of clamping piece is used for connecting the driving piece.
According to the utility model discloses a hoist rope preloading device of an embodiment, the reinforcement formula drive mechanism includes first reinforcement mechanism and the second reinforcement mechanism that links to each other;
one end, far away from the second force increasing mechanism, of the first force increasing mechanism is used for being connected with a driving piece, and one end, far away from the first force increasing mechanism, of the second force increasing mechanism is connected with the clamping piece.
According to an embodiment of the present invention, the second force increasing mechanism comprises a lever having a first end connected to the first force increasing mechanism and a second end connected to the clamping member;
the distance from the fulcrum of the lever to the first end is greater than the distance from the fulcrum of the lever to the second end.
According to the utility model discloses a hoist rope preloading device, hoist rope preloading device still includes the elasticity piece that resets, the one end that the elasticity piece that resets is connected the mounting bracket, the other end that the elasticity piece that resets is connected the lever is located the fulcrum with part between the first end, the elasticity piece that resets is used for the drive the lever drives the clamping piece dorsad the fitting piece removes.
According to the utility model discloses a hoist rope preloading device of an embodiment, first reinforcement mechanism includes fixed pulley group and movable pulley group;
the fixed pulley block and the movable pulley block are respectively and rotatably connected with the mounting frame and the second force-increasing mechanism.
According to the utility model discloses a hoist rope preloading device of embodiment, the driving piece is the drive hoist engine, the drive hoist rope of drive hoist engine is around establishing the connection the fixed pulley group with the running block.
According to the winch rope pre-tightening device provided by the embodiment of the utility model, the fitting piece is detachably arranged on the mounting frame; and/or the presence of a gas in the gas,
the clamp member is detachably mounted to the drive mechanism.
According to the hoisting rope pre-tightening device provided by the embodiment of the utility model, the matching piece is arranged in a block shape; and/or the presence of a gas in the gas,
a groove is formed in the surface, facing the clamping piece, of the matching piece, and the groove is used for containing a part of the hoisting rope.
According to the utility model discloses a hoist rope preloading device, the mounting bracket is provided with the support, the support runs through to be provided with the installation cavity that is used for supplying the hoist rope to pass, the fitting piece with the clamping piece is close to the part of fitting piece all is located in the installation cavity.
According to the hoisting rope pre-tightening device provided by the embodiment of the utility model, the matching piece is arranged on the inner cavity wall of the installation cavity; and/or the presence of a gas in the gas,
the clamping piece is connected with the inner cavity wall of the installation cavity in a sliding mode.
The embodiment of the utility model provides an engineering machine tool is still provided, including the hoist engine with as above hoist rope preloading device, the hoist rope of hoist engine passes between hoist rope preloading device's clamping piece and the fitting piece.
According to the utility model discloses an engineering machine tool, engineering machine tool is the hoist, hoist rope preloading device's mounting bracket does the cantilever crane of hoist.
The embodiment of the utility model provides a hoist rope preloading device and engineering machine tool draw close each other and press from both sides tight hoist rope through clamping piece and fitting piece, and the clamping piece can produce the frictional force opposite with the hoist direction to the hoist rope with the fitting piece to taut hoist rope avoids appearing the problem that the pretightning force can not reach the requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hoisting rope pre-tightening device provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the hoist rope pretensioning device of FIG. 1 taken along line A-A;
FIG. 3 is a schematic view of the hoist rope pretensioning apparatus of FIG. 1 from another perspective;
fig. 4 is a cross-sectional view of the hoist rope pretensioning device of fig. 3 taken along line B-B.
Reference numerals:
100: a hoisting rope pre-tightening device; 1: a mounting frame; 11: a support; 12: a mounting cavity; 2: a mating member; 21: a groove; 3: a clamping member; 31: an annular groove; 4: a first force increasing mechanism; 41: a fixed pulley block; 42: a movable pulley block; 5: a second force increasing mechanism; 51: a lever; 52: a fulcrum; 53: a roller seat; 6: driving a hoisting rope; 7: an elastic reset member; 200: and (4) hoisting the rope.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The hoisting rope pre-tightening device according to the embodiment of the present invention is described below with reference to fig. 1 to 4, and can be used to pre-tighten the hoisting rope of the hoisting machine, as shown in fig. 1, the hoisting rope pre-tightening device 100 includes a mounting frame 1, a fitting member 2, a clamping member 3, and a driving mechanism.
As shown in fig. 1, the fitting member 2 is coupled to the mounting bracket 1, the clamping member 3 is spaced apart from and opposed to the fitting member 2, and the clamping member 3 is movable toward the fitting member 2 to clamp the hoist rope 200 with the fitting member 2 via the clamping member 3. The mounting bracket 1 and the winch are generally disposed on a body of the construction machine, and a winch rope 200 of the winch passes through between the fitting member 2 and the clamping member 3 (the winch rope 200 is generally a steel wire rope), for example, as shown in fig. 1, in this embodiment, the fitting member 2 and the clamping member 3 are opposite to each other at an interval in a first direction, and a winch direction of the winch rope 200 between the fitting member 2 and the clamping member 3 is a second direction, that is, the winch rope 200 is subjected to a traction force in the second direction, where the first direction intersects with the second direction. When the clamping member 3 and the mating member 2 are close to each other to clamp the hoist rope 200, the clamping member 3 and the mating member 2 generate a frictional force against the hoist rope 200 in opposition to the traction force, thereby tightening the hoist rope 200.
As shown in fig. 1, a driving mechanism is mounted to the mounting frame 1, and the driving mechanism is in power coupling connection with the clamping member 3 for driving the clamping member 3 to move toward the mating member 2. In the initial state, the clearance between the fitting member 2 and the clamping member 3 is usually large, and the fitting member 2 and the clamping member 3 are not in contact with the winding rope 200, so that the winding rope 200 does not cause abrasion to the fitting member 2 and the clamping member 3 when the winding machine takes up the rope. When the hoisting rope 200 needs to be pretensioned, the driving mechanism drives the clamping member 3 to move toward the mating member 2, so that the hoisting rope 200 is clamped by the clamping member 3 and the mating member 2. When the hoisting rope 200 is not required to be pretensioned, the clamping member 3 moves away from the mating member 2 to return to the initial state, and in this embodiment, the hoisting rope pretensioning device 100 further includes a returning member for driving the clamping member 3 to move away from the mating member 2 to return to the initial state, and the specific arrangement of the returning member will be described in detail below.
The embodiment of the utility model provides a hoist rope preloading device 100 draws close each other and presss from both sides tight hoist rope 200 through clamping piece 3 and fitting piece 2, and clamping piece 3 and fitting piece 2 can produce the frictional force with hoist opposite direction to hoist rope 200 to taut hoist rope 200 avoids appearing the problem that the pretightning force can not reach the requirement.
Through clamping piece 3 and fitting piece 2 clamp hoist rope 200 for hoist rope 200 can receive frictional force, and this frictional force can be as the pretightning force of hoist rope 200. The magnitude of the pretightening force of the hoisting rope 200 is related to the magnitude of the pressure of the clamping member 3 on the hoisting rope 200, and the pressure of the clamping member 3 on the hoisting rope 200 is transmitted by the driving mechanism, in this embodiment, the driving mechanism comprises a force-increasing transmission mechanism, the force-increasing transmission mechanism is connected with the clamping member 3, one end of the force-increasing transmission mechanism, which is far away from the clamping member 3, is used for connecting a driving member, which is used as a force source for providing a driving force, after the driving force provided by the driving member is amplified through the force-increasing transmission mechanism, the pressure of the clamping member 3 on the hoisting rope 200 is formed, and the pressure is greater than the driving force of the driving member, the amplification of the force is performed through the force-increasing transmission mechanism, which is beneficial for the hoisting rope 200 to obtain sufficient friction force, thereby better realizing the pretightening force of the hoisting rope 200.
The friction force on the hoisting rope 200 can be increased by a boosting transmission mechanism, which may be composed of one or more boosting mechanisms, for example, as shown in fig. 1, in this embodiment, the boosting transmission mechanism includes a first boosting mechanism 4 and a second boosting mechanism 5 connected to each other; the end, far away from the second force increasing mechanism 5, of the first force increasing mechanism 4 is used for being connected with a driving piece, the end, far away from the first force increasing mechanism 4, of the second force increasing mechanism 5 is connected with the clamping piece 3, the force increasing type transmission mechanism comprises two force increasing mechanisms, the structure of the force increasing type transmission mechanism is simple, and the force amplifying effect of the force increasing type transmission mechanism can be adjusted by adjusting the first force increasing mechanism 4 and/or the second force increasing mechanism 5.
The specific arrangement of the first force increasing mechanism 4 and the second force increasing mechanism 5 can be set according to actual conditions, for example, as shown in fig. 1 and 3, in the present embodiment, the second force increasing mechanism 5 includes a lever 51, and the lever 51 has a first end connected with the first force increasing mechanism 4 and a second end connected with the clamping member 3 (the first end of the lever 51 and the first force increasing mechanism 4 can be hinged, and the second end of the lever 51 and the clamping member 3 can also be hinged); the distance from the fulcrum 52 of the lever 51 to the first end is greater than the distance from the fulcrum 52 of the lever 51 to the second end, so that the second end of the lever 51 can bring the clamping member 3 to move toward the mating member 2. The lever 51 is located in a plane defined by a first direction and a second direction, the fulcrum 52 may be provided to the mounting bracket 1, and the lever 51 may be rotatable along an axis in a third direction, wherein the first direction, the second direction and the third direction intersect each other two by two. When the lever 51 is rotated counterclockwise, the lever 51 moves the clamping member 3 toward the mating member 2 to clamp the hoist rope 200. Furthermore, the length of the lever 51 can be adjusted to adjust the length of the arm of force when the hoisting rope 200 is clamped, and further adjust the magnitude of the clamping force.
As shown in fig. 1, in the present embodiment, the first force amplification mechanism 4 includes a fixed pulley block 41 and a movable pulley block 42; the fixed pulley block 41 and the movable pulley block 42 are respectively and rotatably connected with the mounting frame 1 and the second force-increasing mechanism 5. And, optionally, the driving mechanism further includes a driving element, the driving element is a driving winch, and a driving winch rope 6 for driving the winch is wound and connected with the fixed pulley block 41 and the movable pulley block 42. When pretightening force needs to be applied to the hoisting rope 200, the hoisting rope is driven to be wound, at the moment, the hoisting rope 6 is driven to generate anticlockwise moment on the lever 51 through the stressing pulley block (namely, the first force-increasing mechanism 4), the lever 51 rotates anticlockwise around the fulcrum 52, so that the clamping piece 3 is driven to move towards the matching piece 2 to clamp the hoisting rope 200, and the clamping force applied to the hoisting rope 200 can be adjusted by adjusting the multiplying power of the stressing pulley block. The driving winch is used as a driving piece and can be an original part on the existing engineering machinery, for example, when the engineering machinery is a crane, an auxiliary winch carried by the crane can be used as the driving winch, and therefore the driving piece does not need to be additionally arranged. The rotating shaft directions of the fixed pulley block 41 and the movable pulley block 42 are both the third direction, and the fixed pulley block 41 and the movable pulley block 42 are both positioned on one side of the lever 51 far away from the mating piece 2.
As described above, the hoisting rope pretensioner 100 may further include a restoring member, which may be a coupling fitting member 2 and a clamping member 3, respectively; the resetting element may also be a connecting fitting frame 1 and a lever 51, for example, as shown in fig. 1, in this embodiment, the hoisting rope pre-tightening device 100 further includes an elastic resetting element 7, one end of the elastic resetting element 7 is connected to the fitting frame 1, the other end of the elastic resetting element 7 is connected to a portion of the lever 51 between the fulcrum 52 and the first end, and the elastic resetting element 7 is used for driving the lever 51 to drive the clamping element 3 to move away from the fitting element 2. As shown in fig. 1, when the elastic restoring member 7 and the clamping member 3 are located on the same side of the lever 51, if the hoisting rope 200 is not required to be pre-tightened, the power for driving the hoisting machine is cut off, the elastic restoring member 7 automatically contracts, the gap between the clamping member 3 and the mating member 2 is increased, the hoisting rope 200 is not subjected to friction force, and the composite force of the elastic restoring member 7 can be amplified through the lever 51, wherein the elastic restoring member 7 can be a spring or the like.
The clamping member 3 is capable of moving in a first direction, while the fitting member 2 is mounted to the mounting frame 1, the fitting member 2 may be movably mounted to the mounting frame 1, for example, the fitting member 2 is movably connected to the mounting frame 1 in the first direction; the fitting element 2 may also be a fixedly connected mounting frame 1, for example, as shown in fig. 1 and 2, in the present embodiment the mounting frame 1 is provided with a seat 11, and the fitting element 2 is fixedly mounted to the seat 11. Wherein, the specific style of support 11 can be set according to actual need, for example, as shown in fig. 2 and fig. 3, in this embodiment, support 11 is provided with through being used for supplying hoist rope 200 to pass installation cavity 12, and fitting piece 2 and the part that clamping piece 3 is close to fitting piece 2 all are located installation cavity 12, and the inside wall of installation cavity 12 has the spacing effect to hoist rope 200 in a certain extent like this. In the embodiment, the fitting member 2 is mounted on the inner side wall of the mounting cavity 12; the clamping member 3 is slidably connected to the inner sidewall of the mounting cavity 12, such that the inner sidewall of the mounting cavity 12 can slidably guide the clamping member 3, specifically, the second end of the lever 51 is provided with a roller seat 53, the clamping member 3 is mounted on the roller seat 53, and the clamping member 3 is slidably connected to the inner sidewall of the mounting cavity 12 through the roller seat 53.
Through clamping piece 3 and fitting piece 2 clamp hoist rope 200 to for hoist rope 200 provides the pretightning force, clamping piece 3 and fitting piece 2 tend to form wearing and tearing in long-term use like this, so in this embodiment, fitting piece 2 detachably installs in mounting bracket 1, is convenient for change fitting piece 2 at any time like this, specifically, as shown in fig. 2, in this embodiment, fitting piece 2 is through spiro union spare fixed mounting in the inside wall of installation cavity 12.
Similarly, in the present embodiment, the clamping member 3 may be detachably mounted to the driving mechanism, so as to facilitate the replacement of the clamping member 3 at any time, and specifically, as shown in fig. 1 and 2, in the present embodiment, the clamping member 3 is detachably mounted to the roller base 53.
The hoisting rope 200 is clamped by the clamping piece 3 and the matching piece 2, and the specific style and the number of the clamping piece 3 and the matching piece 2 can be set according to the actual situation. The matching element 2 may be provided in a block shape, a roller, etc., and the matching element 2 may be provided with one or more, for example, the matching element 2 is a wear-resistant block extending along the third direction, and the wear-resistant blocks are provided in plurality at intervals along the first direction; similarly, the clamping members 3 may be configured as blocks or rollers, and the clamping members 3 may also be configured with one or more clamping rollers, for example, the clamping members 3 are clamping rollers, the clamping rollers are rotatably connected to the driving mechanism, the rotating shaft direction of the clamping rollers is the third direction, and the clamping rollers are configured with four clamping rollers, and the four clamping rollers are arranged in an array along the first direction and the third direction.
At least one of the parts of the fitting 2 and the clamping element 3 that are close to each other is provided with a groove for receiving a part of the hoisting rope 200, which increases the contact area of the fitting 2 and/or the clamping element 3 with the hoisting rope 200 and thus the friction force to which the hoisting rope 200 is subjected. Specifically, as shown in fig. 2 and 4, in the present embodiment, the mating member 2 is a wear-resistant block, a groove 21 is provided on a face of the wear-resistant block facing the clamping member 3, and the groove 21 penetrates the wear-resistant block in the first direction; the clamping member 3 is a clamping roller, and an annular groove 31 is formed on the peripheral side surface of the clamping roller.
The embodiment of the utility model provides a still provide an engineering machine tool, this engineering machine tool include the hoist engine and as above hoist rope preloading device, the hoist rope of hoist engine passes between hoist rope preloading device's clamping piece and the fitting piece.
The embodiment of the utility model provides an engineering machine tool draws close each other and presss from both sides tight hoist rope through clamping piece and fitting piece, and clamping piece and fitting piece can produce the frictional force opposite with the hoist rope direction to taut hoist rope avoids appearing the pretightning force and can not reach the problem of requirement.
The engineering machinery may be a crane or a rotary excavator, and specifically, in this embodiment, the engineering machinery is a crane, and the mounting bracket of the hoisting rope pre-tightening device is an arm support of the crane.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (13)
1. A hoisting rope pretensioning device, comprising:
a mounting frame;
the fitting piece is arranged on the mounting frame;
the driving mechanism is arranged on the mounting frame; and the number of the first and second groups,
the clamping piece is opposite to the matched piece in a spaced mode, and the driving mechanism is connected with the clamping piece in a power coupling mode and used for driving the clamping piece to move towards the matched piece.
2. The hoist rope pretensioning device of claim 1, wherein the drive mechanism comprises a force-increasing transmission mechanism, the force-increasing transmission mechanism is connected to the clamping member, and an end of the force-increasing transmission mechanism away from the clamping member is used for connecting to a driving member.
3. The hoist rope pretensioning device of claim 2, wherein the force-increasing transmission mechanism comprises a first force-increasing mechanism and a second force-increasing mechanism connected together;
one end, far away from the second force increasing mechanism, of the first force increasing mechanism is used for being connected with a driving piece, and one end, far away from the first force increasing mechanism, of the second force increasing mechanism is connected with the clamping piece.
4. The hoist rope pretensioning device of claim 3, wherein the second force increasing mechanism comprises a lever having a first end connected to the first force increasing mechanism and a second end connected to the clamp;
the distance from the fulcrum of the lever to the first end is greater than the distance from the fulcrum of the lever to the second end.
5. The hoisting rope pre-tightening device according to claim 4, further comprising an elastic resetting member, wherein one end of the elastic resetting member is connected to the mounting frame, the other end of the elastic resetting member is connected to a portion of the lever between the fulcrum and the first end, and the elastic resetting member is used for driving the lever to drive the clamping member to move away from the mating member.
6. The hoist rope pretensioning device of claim 3, wherein the first force increasing mechanism comprises a set of fixed pulleys and a set of movable pulleys;
the fixed pulley block and the movable pulley block are respectively and rotatably connected with the mounting frame and the second force-increasing mechanism.
7. The hoist rope pretensioning device of claim 6, wherein the drive member is a drive hoist, and a drive hoist rope of the drive hoist is wound around the stationary sheave block and the movable sheave block.
8. The hoist rope pretensioning device of any one of claims 1-7, wherein the mating member is removably mounted to the mounting bracket; and/or the presence of a gas in the gas,
the clamp member is detachably mounted to the drive mechanism.
9. The hoisting rope pretensioning device according to any one of claims 1-7, wherein the mating member is in the form of a block; and/or the presence of a gas in the gas,
a groove is formed in the surface, facing the clamping piece, of the matching piece, and the groove is used for containing a part of the hoisting rope.
10. The hoist rope pretensioning device according to any one of claims 1-7, wherein the mounting bracket is provided with a support, the support is provided with a mounting cavity for the hoist rope to pass through, and the mating member and the part of the clamping member near the mating member are both located in the mounting cavity.
11. The hoisting rope pretensioning device according to claim 10, wherein the mating member is disposed on an inner cavity wall of the mounting cavity; and/or the presence of a gas in the gas,
the clamping piece is connected with the inner cavity wall of the installation cavity in a sliding mode.
12. A working machine comprising a hoist and a hoist rope pretensioner according to any of claims 1 to 11, the hoist rope of the hoist passing between a clamping member of the hoist rope pretensioner and a mating member.
13. The construction machine according to claim 12, wherein the construction machine is a crane, and the mounting frame of the hoisting rope pre-tensioning device is a boom of the crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604889.8U CN214059709U (en) | 2020-11-11 | 2020-11-11 | Hoisting rope pre-tightening device and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604889.8U CN214059709U (en) | 2020-11-11 | 2020-11-11 | Hoisting rope pre-tightening device and engineering machinery |
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| Publication Number | Publication Date |
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| CN214059709U true CN214059709U (en) | 2021-08-27 |
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| CN202022604889.8U Active CN214059709U (en) | 2020-11-11 | 2020-11-11 | Hoisting rope pre-tightening device and engineering machinery |
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