CN118306917A - Pull rope device - Google Patents

Abstract

The present disclosure provides a pull cord device, the pull cord device comprising: the device comprises a base, a first clamp, a second clamp and a first telescopic piece; the first clamp comprises a sliding plate and a first clamping assembly, the first clamping assembly is positioned on the plate surface of the sliding plate, the second clamp comprises a fixed plate and a second clamping assembly, and the second clamping assembly is positioned on the plate surface of the fixed plate; the first surface of the machine base is provided with a first chute, the surface, far away from the first clamping assembly, of the sliding plate is provided with a first sliding block, the sliding plate is positioned on the first surface of the machine base, the first sliding block is arranged in the first chute in a sliding manner, the fixed plate is positioned on the first surface, and the fixed plate and the sliding plate are arranged at intervals along the extending direction of the first chute; the first expansion piece is located the first surface, and the opposite both ends of first expansion piece link to each other with fixed plate and sliding plate respectively, and the flexible direction of first expansion piece is parallel with the extending direction of first spout. The device can improve the efficiency of pulling operation of the rope pulling device and improve the reliability of the rope pulling device.

Description

Pull rope device

Technical Field

The disclosure relates to the technical field of marine machinery, in particular to a stay cord device.

Background

The shallow sea oil extraction platform is an offshore working platform constructed by steel or concrete or a mixture of the steel and the concrete and is used as a place for offshore oil extraction operation. The structural form of the offshore oil production platform varies with the shallow or deep sea and the method of offshore oil and gas gathering and transportation and oil production.

In the related art, when offshore oil extraction is carried out, a pull rope device is needed to carry out sliding and dragging operation. The rope pulling device generally comprises a driving device and a roller device, wherein a steel wire rope of the roller device is connected with a part to be pulled, and the driving device drives the roller device to rotate so as to realize the pulling of the part to be pulled.

Since the weight of the part to be towed is borne by the drive means when the part to be towed is towed. When the part to be pulled is heavy, in order to avoid damage caused by overlarge load when the driving device works, the roller device is braked by adopting the braking device after the driving device works for a period of time, and the driving device is controlled to continue to work after stopping for a certain period of time. However, such intermittent operation of the drive device may reduce the efficiency of the pulling operation.

Disclosure of Invention

The embodiment of the disclosure provides a pull rope device, which can improve the efficiency of pulling operation of the pull rope device and improve the reliability of the pull rope device. The technical scheme is as follows:

embodiments of the present disclosure provide a pull cord apparatus comprising: the device comprises a base, a first clamp, a second clamp and a first telescopic piece; the first clamp comprises a sliding plate and a first clamping assembly used for clamping the steel wire rope, the first clamping assembly is positioned on the plate surface of the sliding plate, the second clamp comprises a fixed plate and a second clamping assembly used for clamping the steel wire rope, and the second clamping assembly is positioned on the plate surface of the fixed plate; the first surface of the base is provided with a first sliding groove, the surface, far away from the first clamping assembly, of the sliding plate is provided with a first sliding block, the sliding plate is positioned on the first surface of the base and is arranged in the first sliding groove in a sliding manner, the fixed plate is positioned on the first surface, and the fixed plate and the sliding plate are arranged at intervals along the extending direction of the first sliding groove; the first telescopic piece is located on the first surface and located between the fixed plate and the sliding plate, opposite ends of the first telescopic piece are connected with the fixed plate and the sliding plate respectively, and the telescopic direction of the first telescopic piece is parallel to the extending direction of the first sliding groove.

In one implementation of the disclosed embodiments, the first clamping assembly includes: the two clamping blocks and the at least two second telescopic pieces are arranged on the sliding plate at intervals along the extending direction perpendicular to the first sliding groove, one end, close to the sliding plate, of each clamping block is hinged with the sliding plate, and the rotation central axis of each clamping block is parallel to the extending direction of the first sliding groove; the extending direction of each second telescopic piece is parallel to the sliding plate, the extending direction of each second telescopic piece is perpendicular to the extending direction of the first sliding groove, the two clamping blocks are located between the first part of the second telescopic pieces and the second part of the second telescopic pieces, the first end of the first part of the second telescopic pieces is connected with the sliding plate, the second end of the first part of the second telescopic pieces is used for pushing one clamping block, the first end of the second part of the second telescopic pieces is connected with the sliding plate, and the second end of the second part of the second telescopic pieces is used for pushing the other clamping block.

In another implementation manner of the embodiment of the disclosure, the clamping block is in a strip shape, the cross section of the clamping block along the length direction perpendicular to the clamping block is in a sector ring shape, and opposite surfaces of the two clamping blocks are intrados surfaces.

In another implementation manner of the embodiment of the disclosure, the surfaces of the two clamping blocks facing away from each other are outer cambered surfaces, and one end of each outer cambered surface, which is close to the sliding plate, is hinged with the sliding plate; the first clamping assembly further comprises an elastic piece, one end of the elastic piece is connected with the sliding plate, the other end of the elastic piece is connected with the outer cambered surface, and the distance from the other end of the elastic piece to the sliding plate is greater than the distance from the hinging point of the outer cambered surface to the sliding plate.

In another implementation manner of the embodiment of the disclosure, the first clamping assembly further includes a pushing block, the pushing block is a right-angled triangular prism, a surface of one straight edge of the pushing block is connected with the second end of the second telescopic member, a surface of a bevel edge of the pushing block faces the sliding plate, and a surface of a bevel edge of the pushing block abuts against the clamping block.

In another implementation manner of the embodiment of the disclosure, the first clamping assembly further includes an upper pressing plate, the upper pressing plate is press-mounted on the pushing block, a second sliding groove is formed in a surface, close to the sliding plate, of the upper pressing plate, and an extending direction of the second sliding groove is perpendicular to an extending direction of the first sliding groove; the surface of the pushing block, which is close to the upper pressing plate, is provided with a second sliding block, and the second sliding block is arranged in the second sliding groove in a sliding way.

In another implementation of the embodiment of the present disclosure, the intrados is provided with a friction plate.

In another implementation of the embodiment of the present disclosure, the second telescopic member is a spring cylinder.

In another implementation manner of the embodiment of the disclosure, the plate surface of the sliding plate is provided with a first supporting ear plate, and the plate surface of the fixed plate is provided with a second supporting ear plate; the first telescopic piece comprises a first oil cylinder, a cylinder barrel of the first oil cylinder is connected with the second supporting lug plate, and a telescopic rod of the first oil cylinder is connected with the first supporting lug plate.

In another implementation of the disclosed embodiments, the pull cord apparatus further includes a roller assembly located on the first surface of the housing, and the first clamp assembly is located between the roller assembly and the second clamp assembly.

The technical scheme provided by the embodiment of the disclosure has the beneficial effects that at least:

The stay cord device that this disclosed embodiment provided includes frame and interval first clamping component and second clamping component of arranging on the frame, wherein, the sliding plate of first clamping component slides along the first spout on the first surface of frame and sets up on the frame, and the fixed plate of second clamping component is fixed on the frame, is connected with first extensible member between sliding plate and the fixed plate, and the extending direction of first extensible member is unanimous, and the extending direction of first extensible member is flexible just so can control the sliding plate keep away from or be close to for the fixed plate, consequently, the first clamping component that is located on the sliding plate also can keep away from or be close to for the second clamping component that is located on the fixed plate.

When the rope pulling device is used for pulling the steel wire rope, the steel wire rope is simultaneously clamped on the first clamping assembly and the second clamping assembly in the first step. And the second step is that the second clamping assembly is controlled to loosen the steel wire rope, and the first telescopic piece is controlled to stretch out, so that the first telescopic piece can push the first clamping assembly to be far away from the second clamping assembly, and the first clamping assembly can clamp the steel wire rope to travel a certain distance, thereby completing a section of traction action. And thirdly, controlling the second clamping assembly to clamp the steel wire rope, controlling the first clamping assembly to loosen the steel wire rope, and simultaneously controlling the first telescopic piece to recover, wherein the first telescopic piece can push the first clamping assembly to be close to the second clamping assembly at the moment so as to wait for the second traction. Then, the second step and the third step are repeatedly performed, so that the step-wise traction wire rope can be moved.

Compared with the mode that a driving device is adopted to drive a roller device to pull a steel wire rope in the prior art, as the load is alternately borne by the two clamping assemblies, the driving device (the first telescopic piece) is not required to bear the load, so that the first telescopic piece can be prevented from being easily damaged due to bearing pressure, continuous and uninterrupted pulling operation can be performed, and the efficiency of the pulling operation can be effectively improved. Meanwhile, in the traction process, the gravity of the part to be towed is alternately borne by the two clamping assemblies, so that the two clamping assemblies can be alternately rested, the condition that the single clamping assembly continuously bears the load in the traction operation is avoided, and the durability and reliability of the clamping assemblies are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a front view of a pull cord apparatus provided in an embodiment of the present disclosure;

FIG. 2is a side view of a pull cord apparatus provided in an embodiment of the present disclosure;

FIG. 3 is a top view of a pull cord apparatus provided in an embodiment of the present disclosure;

FIG. 4 is a schematic view of a housing according to an embodiment of the present disclosure;

FIG. 5 is a front view of a slide plate provided by an embodiment of the present disclosure;

FIG. 6 is a top view of a slide plate provided by an embodiment of the present disclosure;

FIG. 7 is a cross-sectional view of the MM provided in FIG. 3;

FIG. 8 is a front view of a clamp block provided by an embodiment of the present disclosure;

FIG. 9 is a side view of a clamp block provided by an embodiment of the present disclosure;

fig. 10 is a schematic structural view of a first clamping assembly according to an embodiment of the present disclosure.

The various labels in the figures are described below:

10. a base; 11. a first surface; 12. a first chute;

21. a sliding plate; 210. a first slider; 211. a first support ear plate;

22. a first clamping assembly; 221. a clamping block; 222. a second telescopic member; 223. a friction plate; 224. a screw hole; 225. an elastic member; 226. a pushing block; 227. an upper press plate; 228. a second slider; 229. a second chute;

31. a fixing plate; 310. a second support ear plate;

32. A second clamping assembly;

40. a first telescopic member;

50. A roller assembly;

60. A wire rope.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom" and the like are used only to indicate relative positional relationships, which may be changed accordingly when the absolute position of the object to be described is changed.

Fig. 1 is a front view of a pull cord apparatus provided in an embodiment of the present disclosure. As shown in fig. 1, the pull cord apparatus includes: the frame 10, the first clamp, the second clamp and the first telescoping member 40.

Fig. 2 is a side view of a pull cord apparatus provided in an embodiment of the present disclosure. Fig. 3 is a top view of a pull cord apparatus provided in an embodiment of the present disclosure.

As shown in fig. 2 and 3, the first clamp includes a sliding plate 21 and a first clamping assembly 22 for clamping the wire rope 60, and the first clamping assembly 22 is located on the plate surface of the sliding plate 21.

As shown in fig. 3, the second clamp includes a fixing plate 31 and a second clamping assembly 32 for clamping the wire rope 60, the second clamping assembly 32 being located on the plate surface of the fixing plate 31.

Fig. 4 is a schematic structural diagram of a stand 10 according to an embodiment of the present disclosure. The first surface 11 of the stand 10 in fig. 4 is further provided with a fixing plate 31, where the fixing plate 31 is located on the right side of the stand 10.

As shown in fig. 4, the first surface 11 of the housing 10 has a first slide groove 12, and the first slide groove 12 and the fixing plate 31 are arranged at intervals in the extending direction of the first slide groove 12.

The extending direction of the first chute 12 may refer to the length direction of the first chute 12. As shown in fig. 4, the longitudinal direction of the first chute 12 is a direction from left to right in fig. 4.

Fig. 5 is a front view of a slide plate 21 provided in an embodiment of the present disclosure. Fig. 6 is a top view of a slide plate 21 provided by an embodiment of the present disclosure.

As shown in fig. 5, the plate surface of the sliding plate 21, which is far from the first clamping assembly 22, has a first slider 210.

As shown in fig. 1 and 3, the sliding plate 21 is located on the first surface 11 of the stand 10, and the first slider 210 is slidably disposed in the first chute 12.

As shown in fig. 1 and 3, the fixing plate 31 is located on the first surface 11, and the fixing plate 31 and the sliding plate 21 are arranged at intervals along the extending direction of the first chute 12.

As shown in fig. 1 and 3, the first telescopic member 40 is located on the first surface 11, and the first telescopic member 40 is located between the fixed plate 31 and the sliding plate 21, and opposite ends of the first telescopic member 40 are respectively connected to the fixed plate 31 and the sliding plate 21.

The extending direction of the first extending member 40 is parallel to the extending direction of the first chute 12. The telescoping direction of the first telescoping member 40 refers to a moving direction in which the slide plate 21 is controlled to move away from or approach the fixed plate 31.

The pull cord apparatus provided in the embodiments of the present disclosure includes a housing 10 and a first clamping assembly 22 and a second clamping assembly 32 spaced apart on the housing 10. The sliding plate 21 of the first clamping assembly 22 is slidably disposed on the base 10 along the first sliding groove 12 on the first surface 11 of the base 10, the fixing plate 31 of the second clamping assembly 32 is fixed on the base 10, a first telescopic member 40 is connected between the sliding plate 21 and the fixing plate 31, and the telescopic direction of the first telescopic member 40 is consistent with the extending direction of the first sliding groove 12, so that the telescopic member 40 can control the sliding plate 21 to be far away from or close to the fixing plate 31, and therefore, the first clamping assembly 22 located on the sliding plate 21 can also be far away from or close to the second clamping assembly 32 located on the fixing plate 31.

When the rope is pulled by the rope pulling device, the rope is simultaneously clamped on the first clamping component 22 and the second clamping component 32 in a first step. In the second step, the second clamping assembly 32 is controlled to loosen the steel wire rope, and the first telescopic member 40 is controlled to extend, at this time, the first telescopic member 40 pushes the first clamping assembly 22 away from the second clamping assembly 32, so that the first clamping assembly 22 also clamps the steel wire rope to travel a certain distance, and a section of traction action is completed. Third, the second clamping assembly 32 is controlled to clamp the steel wire rope, the first clamping assembly 22 is controlled to loosen the steel wire rope, and the first telescopic member 40 is controlled to be recovered, at this time, the first telescopic member 40 pushes the first clamping assembly 22 to approach the second clamping assembly 32 for second traction. Then, the second step and the third step are repeatedly performed, so that the step-wise traction wire rope can be moved.

Compared with the mode of adopting a driving device to drive a roller device to pull the steel wire rope in the prior art, as the load is alternately born by the two clamping assemblies, the driving device (the first telescopic piece 40) is not required to bear the load, so that the first telescopic piece 40 can be prevented from being easily damaged due to bearing pressure, continuous and uninterrupted pulling operation can be realized, and the efficiency of the pulling operation can be effectively improved. Meanwhile, in the traction process, the gravity of the part to be towed is alternately borne by the two clamping assemblies, so that the two clamping assemblies can be alternately rested, the condition that the single clamping assembly continuously bears the load in the traction operation is avoided, and the durability and reliability of the clamping assemblies are reduced.

Alternatively, as shown in fig. 5 and 6, the plate surface of the slide plate 21 has a first support lug 211. The first support lug 211 is vertically connected to the slide plate 21.

Illustratively, as shown in fig. 5, a through hole is provided on the plate surface of the first supporting ear plate 211, the axial direction of the through hole is parallel to the sliding plate 21, and the axial direction of the through hole is perpendicular to the extending direction of the first chute 12.

Illustratively, as shown in fig. 6, the plate surface of the sliding plate 21 is provided with two pairs of first supporting lugs 211, and the two pairs of first supporting lugs 211 are respectively arranged at intervals on both sides of the sliding plate 21. Each pair of first support lugs 211 is arranged in parallel at intervals, and the through holes of each pair of first support lugs 211 are coaxial.

As shown in fig. 1 and 3, the plate surface of the fixing plate 31 has a second supporting ear plate 310. The second support ear plate 310 is vertically connected to the fixing plate 31.

Illustratively, as shown in fig. 1, the second support ear 310 has a through hole on its plate surface, the axial direction of the through hole is parallel to the fixing plate 31, and the axial direction of the through hole is perpendicular to the extending direction of the first chute 12.

Illustratively, as shown in fig. 3, the plate surface of the fixing plate 31 is provided with two pairs of second supporting lugs 310, and the two pairs of second supporting lugs 310 are respectively arranged at two sides of the fixing plate 31 at intervals. Each pair of second support lugs 310 is arranged in parallel at intervals, and the through holes of each pair of second support lugs 310 are coaxial.

Optionally, the first telescopic member 40 includes a first cylinder, a cylinder barrel of the first cylinder is connected to the second support ear 310, and a telescopic rod of the first cylinder is connected to the first support ear 211.

As shown in fig. 1 and 3, the pull rope device is provided with two first cylinders, and the two first cylinders are respectively connected with a pair of first support lugs 211 and a pair of second support lugs 310.

The end part of the telescopic rod of the first oil cylinder is provided with an ear plate, and the end part of the cylinder barrel of the first oil cylinder is provided with an ear plate. The lug plate of the telescopic rod of the first oil cylinder is inserted between a pair of first supporting lug plates 211, the lug plate of the cylinder barrel of the first oil cylinder is inserted between a pair of second supporting lug plates 310, the lug plates of the first supporting lug plates 211 and the telescopic rod are hinged together through bolts, and the lug plates of the second supporting lug plates 310 and the cylinder barrel are hinged together through bolts.

In this way, the first oil cylinder is hinged to the first supporting ear plate 211 and the second supporting ear plate 310 respectively, so that the first oil cylinder is prevented from being assembled in parallel to the base 10 due to the existence of manufacturing errors or assembly errors, and is subjected to larger resistance when the first oil cylinder stretches and contracts.

Alternatively, as shown in fig. 1,2 and 3, the pull cord apparatus further includes a roller assembly 50, the roller assembly 50 being positioned on the first surface 11 of the housing 10, and the first clamp assembly 22 being positioned between the roller assembly 50 and the second clamp assembly 32.

Wherein the roller assembly 50 comprises four rollers, two of the four rollers being arranged in parallel and two being parallel to the first surface 11 of the housing 10. After the two rollers of the steel wire rope are used, the jumping of the rollers in the direction perpendicular to the first surface 11 of the machine base 10 can be limited, so that the advancing direction of the steel wire rope is limited, and the limit of the steel wire rope is realized.

Wherein the other two of the four rollers are arranged in parallel and the two rollers are perpendicular to the first surface 11 of the housing 10. After the two rollers of the steel wire rope, the jumping of the rollers in the direction parallel to the first surface 11 of the machine base 10 can be limited, so that the advancing direction of the steel wire rope is limited, and the limit of the steel wire rope is realized.

Fig. 7 is a cross-sectional view of the MM provided in fig. 3. As shown in fig. 7, the first clamping assembly 22 includes: the two clamping blocks 221 and the at least two second telescopic pieces 222 are arranged on the sliding plate 21 at intervals along the extending direction perpendicular to the first sliding groove 12, one end, close to the sliding plate 21, of each clamping block 221 is hinged to the sliding plate 21, and the rotation central axis of each clamping block 221 is parallel to the extending direction of the first sliding groove 12.

The central axis of rotation of the clamping blocks 221 is parallel to the extending direction of the first sliding groove 12, so that when the two clamping blocks 221 rotate towards the middle area, the two clamping blocks 221 can approach each other, thereby clamping the steel wire rope between the two clamping blocks 221. When the two clamping blocks 221 are rotated in a direction away from the middle region, the two clamping blocks 221 can be moved away from each other, thereby releasing the wire rope between the two clamping blocks 221.

As shown in fig. 7, the extending and contracting directions of the second telescopic members 222 are parallel to the sliding plate 21, and the extending and contracting directions of the second telescopic members 222 are perpendicular to the extending direction of the first sliding groove 12.

Wherein, the two clamping blocks 221 are located between the first part second telescopic member 222 and the second part second telescopic member 222, the first end of the first part second telescopic member 222 is connected with the sliding plate 21, the second end of the first part second telescopic member 222 is used for pushing one clamping block 221, the first end of the second part second telescopic member 222 is connected with the sliding plate 21, and the second end of the second part second telescopic member 222 is used for pushing the other clamping block 221.

Illustratively, as shown in FIG. 7, the second telescoping member 222 of the first section is located on the left side and the second telescoping member 222 of the second section is located on the right side.

Wherein there is one second telescoping member 222 on the left side and one second telescoping member 222 on the right side. One end of the left second telescopic member 222 is hinged on the sliding plate 21, and the other end of the left second telescopic member 222 is used for pushing the left clamping block 221. One end of the right second telescopic member 222 is hinged on the sliding plate 21, and the other end of the right second telescopic member 222 is used for pushing the right clamping block 221. That is, the two second telescopic members 222 sandwich the two clamping blocks 221 therein.

In the above implementation manner, the second telescopic member 222 is installed at one side of the clamping block 221, so that the second telescopic member 222 pushes the clamping block 221, and thus the two clamping blocks 221 are controlled to rotate towards the middle, so as to clamp the steel wire rope between the two clamping blocks 221.

Illustratively, the second telescoping member 222 is a spring ram. When the hydraulic system fails, the two clamping blocks 221 can still be controlled to rotate towards the middle through the automatic extending function of the spring oil cylinder so as to clamp the steel wire rope between the two clamping blocks 221, so that the steel wire rope is braked in time, and the safety is improved.

Fig. 8 is a front view of a clamping block 221 provided by an embodiment of the present disclosure. As shown in fig. 8, the clamping block 221 has a long strip shape.

Fig. 9 is a side view of a clamping block 221 provided by an embodiment of the present disclosure. As shown in fig. 9, the clamping block 221 has a sector ring shape in a cross-sectional shape perpendicular to the length direction of the clamping block 221. Referring to fig. 7, the opposite surfaces of the two clamping blocks 221 are intrados surfaces.

In the embodiment of the disclosure, the length direction of the clamping block 221 is parallel to the extending direction of the first chute 12, and the clamping block 221 is configured to be long, so that the clamping block 221 can clamp a wire rope with a larger area, thereby improving the clamping effect of the clamping block 221 for clamping the wire rope.

And, the surface of the clamping block 221 close to the steel wire rope is an inner cambered surface, so that when the clamping block 221 clamps the steel wire rope, the inner cambered surface of the clamping block 221 can be attached to the surface of the outer wall of the steel wire rope, and the clamping effect of the clamping block 221 for clamping the steel wire rope is improved.

Alternatively, as shown in fig. 9, friction plates 223 may be provided on the intrados surface of the clamping block 221. The friction coefficient between the friction plate 223 and the steel wire rope is larger, so that the clamping effect of the clamping block 221 on the steel wire rope is improved, and the steel wire rope is prevented from loosening.

As shown in fig. 8 and 9, for example, the intrados surface of the clamping block 221 may be provided with a plurality of screw holes 224, the plurality of screw holes 224 may be arranged on the clamping block 221 at intervals, and after the friction plate 223 is placed on the intrados surface of the clamping block 221, bolts may be mounted on the intrados surface of the clamping block 221, and the bolts may be connected to the intrados surface after passing through the friction plate 223 and the screw holes 224, thereby fixing the friction plate 223 on the clamping block 221.

Alternatively, as shown in fig. 9, the surface of the two clamping blocks 221 facing away from each other is an extrados, and one end of the extrados, which is close to the sliding plate 21, is hinged to the sliding plate 21.

Fig. 10 is a schematic structural view of a first clamping assembly 22 provided in an embodiment of the present disclosure. As shown in fig. 10, the first clamping assembly 22 further includes an elastic member 225, one end of the elastic member 225 is connected to the sliding plate 21, the other end of the elastic member 225 is connected to the outer arc surface, and the distance between the other end of the elastic member 225 and the sliding plate 21 is greater than the distance between the hinge point of the outer arc surface and the sliding plate 21.

Illustratively, the resilient member 225 may be a spring. One end of the spring is connected with the lifting hook on the sliding plate 21, and the other end of the spring is connected to the central area of the outer arc surface, so that the upper area of the outer arc surface is exposed, and the second telescopic piece 222 is pushed.

The two clamping blocks 221 have a clamping state and a separating state, when the two clamping blocks 221 are in the clamping state, the upper ends of the two clamping blocks 221 are nearest, and when the two clamping blocks 221 are in the separating state, the upper ends of the two clamping blocks 221 are farthest.

In the disclosed embodiment, when the spring is in an undeformed state, the two clamping blocks 221 may be in a separated state, i.e., the upper ends of the two clamping blocks 221 are furthest apart. Therefore, after the second telescopic oil cylinder pushes the two clamping blocks 221 to be converted from the separation state to the clamping state, the spring is in the deformation state, and the second telescopic oil cylinder is recovered at the moment, so that the two clamping blocks 221 can be automatically converted into the separation state by means of the elasticity of the spring, and the unbinding of the steel wire rope is completed.

Optionally, as shown in fig. 10, the first clamping assembly 22 further includes a push block 226, where the push block 226 is a right triangular prism, a surface of one straight edge of the push block 226 is connected to the second end of the second telescopic member 222, a surface of a bevel edge of the push block 226 faces the sliding plate 21, and a surface of a bevel edge of the push block 226 abuts against the clamping block 221.

By designing the push block 226 as a right-angle triangular prism, the side surface of the inclined side of the right-angle triangular prism is contacted with the outer cambered surface of the clamping block 221, so that the push block 226 can only contact with the upper end of the outer cambered surface of the clamping block 221 in the pushing process, but not the elastic piece 225, and the arrangement of all components in the first clamping assembly 22 is more reasonable.

Optionally, as shown in fig. 10, the first clamping assembly 22 further includes an upper pressing plate 227, where the upper pressing plate 227 is press-mounted on the push block 226, and a surface of the upper pressing plate 227 near the sliding plate 21 is provided with a second sliding groove 229, and an extending direction of the second sliding groove 229 is perpendicular to an extending direction of the first sliding groove 12.

Illustratively, the upper pressing plate 227 may be fixed on the sliding plate 21 by bolts, that is, the plate surface of the upper pressing plate 227 is provided with a through hole, the plate surface of the sliding plate 21 is provided with a threaded hole, and the bolts pass through the through hole on the plate surface of the upper pressing plate 227 to be connected with the threaded hole on the plate surface of the sliding plate 21, so that the fixing of the upper pressing plate 227 and the sliding plate 21 can be completed.

The distance between the upper pressing plate 227 and the lower sliding block is adjusted by adjusting the depth of the screw bolt screwed into the threaded hole, so that the requirements of clamping the steel wire ropes with different sizes are met.

As shown in fig. 10, a second slider 228 is disposed on a surface of the push block 226 adjacent to the upper platen 227, and the second slider 228 is slidably disposed in a second slide groove 229.

The clamping block 221, the pushing block 226 and the second telescopic piece 222 are pressed on the sliding plate 21 by the upper pressing plate 227, and all parts in the first clamping assembly 22 are protected by the upper pressing plate 227, so that all parts are prevented from falling off easily, and the reliability of the first clamping assembly 22 is improved.

Meanwhile, a second sliding groove 229 is further formed on the surface of the upper pressing plate 227, and the second sliding block 228 of the pushing block 226 can slide in the second sliding groove 229 to guide the moving direction of the pushing block 226, so that the pushing block 226 is prevented from moving askew, and no acting force is applied to the clamping block 221, so that the reliability of the first clamping assembly 22 is improved.

In the embodiment of the present disclosure, the structure of the second clamping assembly 32 is the same as that of the first clamping assembly 22, and the embodiment of the present disclosure will not be described in detail. The difference is that the first clamping assembly 22 is mounted on the sliding plate 21 to move along the first sliding slot 12 on the base 10, the second clamping assembly 32 is mounted on the fixed plate 31, and the second clamping assembly 32 is fixed on the base 10.

The foregoing disclosure is not intended to be limited to any form of embodiment, but is not intended to limit the disclosure, and any simple modification, equivalent changes and adaptations of the embodiments according to the technical principles of the disclosure are intended to be within the scope of the disclosure, as long as the modifications or equivalent embodiments are possible using the technical principles of the disclosure without departing from the scope of the disclosure.

Claims (10)

1. A pull cord apparatus, the pull cord apparatus comprising: the device comprises a base (10), a first clamp, a second clamp and a first telescopic piece (40);

The first clamp comprises a sliding plate (21) and a first clamping assembly (22) for clamping the steel wire rope, the first clamping assembly (22) is positioned on the plate surface of the sliding plate (21), the second clamp comprises a fixed plate (31) and a second clamping assembly (32) for clamping the steel wire rope, and the second clamping assembly (32) is positioned on the plate surface of the fixed plate (31);

The first surface (11) of the base (10) is provided with a first sliding groove (12), the surface, far away from the first clamping assembly (22), of the sliding plate (21) is provided with a first sliding block (210), the sliding plate (21) is positioned on the first surface (11) of the base (10), the first sliding block (210) is slidably arranged in the first sliding groove (12), the fixed plate (31) is positioned on the first surface (11), and the fixed plate (31) and the sliding plate (21) are distributed at intervals along the extending direction of the first sliding groove (12);

the first telescopic piece (40) is located on the first surface (11), and located between the fixed plate (31) and the sliding plate (21), opposite ends of the first telescopic piece (40) are respectively connected with the fixed plate (31) and the sliding plate (21), and the telescopic direction of the first telescopic piece (40) is parallel to the extending direction of the first sliding groove (12).

2. The pull cord apparatus of claim 1, wherein the first clamp assembly (22) comprises: the two clamping blocks (221) and at least two second telescopic pieces (222) are arranged on the sliding plate (21) at intervals along the extending direction perpendicular to the first sliding groove (12), one end, close to the sliding plate (21), of each clamping block (221) is hinged with the sliding plate (21), and the rotation central axis of the clamping block (221) is parallel to the extending direction of the first sliding groove (12);

the extending direction of each second telescopic piece (222) is parallel to the sliding plate (21), the extending direction of each second telescopic piece (222) is perpendicular to the extending direction of the first sliding groove (12), two clamping blocks (221) are located between a first part of the second telescopic pieces (222) and a second part of the second telescopic pieces (222), the first end of the first part of the second telescopic pieces (222) is connected with the sliding plate (21), the second end of the first part of the second telescopic pieces (222) is used for pushing one clamping block (221), the first end of the second part of the second telescopic pieces (222) is connected with the sliding plate (21), and the second end of the second part of the second telescopic pieces (222) is used for pushing the other clamping block (221).

3. The rope pulling device according to claim 2, characterized in that the clamping block (221) is elongated, and the clamping block (221) has a sector-ring shape in a cross-section perpendicular to the length direction of the clamping block (221), and the opposite surfaces of the two clamping blocks (221) are intrados surfaces.

4. A pull rope device according to claim 3, characterized in that the surfaces of the two clamping blocks (221) facing away are extrados surfaces, one end of which, which is close to the sliding plate (21), is hinged to the sliding plate (21);

the first clamping assembly (22) further comprises an elastic piece (225), one end of the elastic piece (225) is connected with the sliding plate (21), the other end of the elastic piece (225) is connected with the outer cambered surface, and the distance from the other end of the elastic piece (225) to the sliding plate (21) is greater than the distance from the hinging point of the outer cambered surface to the sliding plate (21).

5. A pull rope device according to claim 3, wherein the first clamping assembly (22) further comprises a push block (226), the push block (226) is a right triangular prism, a surface of one straight edge of the push block (226) is connected with the second end of the second telescopic member (222), a surface of a bevel edge of the push block (226) faces the sliding plate (21), and a surface of a bevel face of the push block (226) abuts against the clamping block (221).

6. The rope pulling device according to claim 5, characterized in that the first clamping assembly (22) further comprises an upper pressing plate (227), the upper pressing plate (227) is pressed on the pushing block (226), a second sliding groove (229) is arranged on the surface, close to the sliding plate (21), of the upper pressing plate (227), and the extending direction of the second sliding groove (229) is perpendicular to the extending direction of the first sliding groove (12);

the surface of the pushing block (226) close to the upper pressing plate (227) is provided with a second sliding block (228), and the second sliding block (228) is arranged in the second sliding groove (229) in a sliding mode.

7. A pull cord apparatus according to any one of claims 3 to 6, characterized in that the intrados is provided with friction discs (223).

8. The pull cord apparatus of any one of claims 2 to 6, wherein the second telescoping member (222) is a spring cylinder.

9. The rope pulling device according to any one of claims 1 to 6, characterized in that the plate surface of the sliding plate (21) is provided with a first supporting lug plate (211), and the plate surface of the fixed plate (31) is provided with a second supporting lug plate (310);

The first telescopic piece (40) comprises a first oil cylinder, a cylinder barrel of the first oil cylinder is connected with the second supporting lug plate (310), and a telescopic rod of the first oil cylinder is connected with the first supporting lug plate (211).

10. The pull cord apparatus of any one of claims 1 to 6, further comprising a roller assembly (50), the roller assembly (50) being located on the first surface (11) of the housing (10) and the first clamping assembly (22) being located between the roller assembly (50) and the second clamping assembly (32).