CN210985464U - Sliding vehicle - Google Patents

Abstract

The utility model relates to an engineering technical field is put in the circuit exhibition, especially relates to a coaster. The pulley comprises a rack, and a pulley and a connecting part which are arranged on the rack; the pulley rotates to be connected in the frame, and connecting portion set firmly in the frame, and the pulley is used for setting up in the bearing rope, and connecting portion are used for connecting wire. An object of the utility model is to provide a pulley to alleviate the lower technical problem of efficiency of construction is put in wire exhibition that exists among the prior art.

Description

Sliding vehicle

Technical Field

The utility model belongs to the technical field of the engineering technique is put in the circuit exhibition and specifically relates to a coaster is related to.

Background

Along with the rapid development of global economy, air pollution is continuously aggravated, novel clean energy is more and more taken into consideration, wherein, the current collection circuit is the "artery" of new forms of energy power plant, therefore the exhibition of current collection circuit wire is very important.

The current collecting line conductor unfolding is that the conductor is unfolded from an initial pole tower to a destination pole tower, so that two ends of the conductor are respectively fixed on the initial pole tower and the destination pole tower. Specifically, firstly, the traction rope is unfolded between an initial tower and a destination tower, the wire is tied at one end, close to the initial tower, of the traction rope, the traction rope is pulled towards the destination tower, the wire is gradually pulled to the destination tower, then the two ends of the wire are respectively fixed to the initial tower and the destination tower, and the wire unfolding is completed.

However, since the wire is generally a steel-cored aluminum strand wire with a relatively large weight, in the process of spreading the wire, the wire between the starting tower and the destination tower may sag under the action of gravity and easily interfere with projects such as scenic spots, forest areas, cultivated lands or buildings under the wire, which is a potential safety hazard.

The present application thus provides a new tackle that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pulley to alleviate the lower technical problem of efficiency of construction is put in wire exhibition that exists among the prior art.

Based on the above purpose, the utility model provides a pulley, which comprises a frame, and a pulley and a connecting part which are both arranged on the frame;

the pulley rotate connect in the frame, connecting portion set firmly in the frame, just the pulley is used for setting up in the bearing rope, connecting portion are used for connecting wire.

Further, the connecting part is a connecting hook matched with the lead.

Further, a buffer pad is arranged in the connecting hook.

Further, the frame comprises a wheel frame, a rope frame and a connecting frame which are connected in sequence;

the pulley install in the wheel carrier, connecting portion set up in the link, just be provided with in the rope fastening and bear the perforation of rope assorted, after the bearing rope passed the perforation, the pulley can be followed the bearing rope slides.

Further, the rope frame comprises a first plate and a second plate which are opposite and arranged at intervals, and the through holes are formed between the first plate and the second plate.

Furthermore, the first plate is fixedly arranged between the wheel frame and the connecting frame, and the second plate is movably connected between the wheel frame and the connecting frame.

Furthermore, one end of the second plate is rotatably connected to the wheel carrier and can rotate towards the direction close to or far away from the first plate, and the other end of the second plate is detachably connected with the first plate.

Furthermore, the pulley also comprises a locking pin and a connecting pin fixedly arranged on the first plate, and a pin hole is formed in one side of the connecting pin, which is far away from the first plate;

the second plate is provided with a connecting hole, the connecting pin penetrates through the connecting hole, and the locking pin is inserted into the pin hole so as to lock the second plate on the first plate.

Furthermore, the connecting frame comprises a connecting plate and a ribbed plate, the connecting plate is fixedly arranged on the first plate, and two ends of the ribbed plate are fixedly connected to the connecting plate and the connecting pin respectively;

the connecting part is arranged on the connecting plate.

Furthermore, a sliding groove matched with the bearing rope is formed in the circumferential surface of the pulley.

Adopt above-mentioned technical scheme, the utility model discloses a coaster has following beneficial effect: when the construction is put in exhibition to the wire, at first put the bearing rope that is used for supporting the pulley of coaster and the haulage rope that is used for pulling the wire between originated shaft tower and destination shaft tower, and be close to the one end of originated shaft tower with the wire system, place the pulley in the bearing rope, make the pulley can slide along the bearing rope, and connect the wire in the connecting portion of coaster, consequently when pulling the haulage rope, the wire is close to the pulling of the one end gradual release of originated shaft tower in order to adapt to the haulage rope, consequently, the wire can remove to the destination shaft tower along with the haulage rope, and the coaster can remove to the destination shaft tower along with the wire, thereby make the pulley slide.

The conductor is supported through the connecting portion in the moving process, the conductor between the starting tower and the destination tower is prevented from sagging or the sagging amount of the conductor is reduced, preferably, when the conductor is unfolded, one pulley is arranged on the conductor at intervals, a plurality of pulleys are arranged at intervals, and the sagging amount of the conductor between the starting tower and the destination tower is further reduced. By means of the arrangement, the wire can keep a certain distance with the bearing rope, namely, the wire can keep a certain distance with projects such as scenic spots, forest zones, cultivated lands or buildings located below the wire, the wire is prevented from sagging to interfere with the projects, and therefore the wire unfolding construction operation is safer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a pulley according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a pulley according to an embodiment of the present invention;

fig. 3 is a third schematic structural view of a pulley according to an embodiment of the present invention;

fig. 4 is a schematic view of a process of using the pulley to lay wires according to an embodiment of the present invention.

Reference numerals: 1-pulley;

2-a frame; 21-a wheel frame; 22-a rope frame; 221-a first plate; 222-a second plate; 223-perforating; 23-a connecting frame; 231-a connecting plate; 232-ribbed plate;

3-a pulley; 31-a rotating shaft; 32-a chute; 4-a connecting part; 51-a locking pin; 52-connecting pin;

6-a buffer pad; 71-a wire; 72-a pull cord;

81-a load-bearing rope; 82-a first transition rope; 83-a second transition rope;

91-starting a tower; 92-destination tower.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1, the present embodiment provides a pulley 1, where the pulley 1 includes a frame 2, and a pulley 3 and a connecting portion 4 both disposed on the frame 2; the pulley 3 is rotatably connected to the frame 2, the connecting portion 4 is fixedly arranged on the frame 2, the pulley 3 is arranged on the bearing rope 81, the connecting portion 4 is used for connecting a wire, and optionally, the wire 71 is an aluminum steel-reinforced stranded wire.

Referring to fig. 4, when the wire 71 is unwound for construction, a bearing rope 81 for supporting the pulley 3 of the pulley 1 and a traction rope 72 for pulling the wire 71 are firstly unwound between an origin tower 91 and a destination tower 92, the wire 71 is tied at one end of the traction rope 72 close to the origin tower 91, the pulley 3 is placed on the bearing rope 81, the pulley 3 can slide along the bearing rope 81, and the wire 71 is connected to the connecting part 4 of the pulley 1, so that when the traction rope 72 is pulled, one end of the wire 71 close to the origin tower 91 is gradually released to adapt to the pulling of the traction rope 72, the wire 71 can move along with the traction rope 72 to the destination tower 92, and the pulley 1 can move along with the wire 71 to the destination tower 92, so that the pulley 3 can slide along the bearing rope 81.

Wherein, the conductor 71 is supported by the connecting part 4 during the moving process, the conductor 71 between the starting tower 91 and the destination tower 92 is prevented from sagging or the sagging amount of the conductor 71 is reduced, preferably, when the conductor 71 is spread, one pulley 1 is arranged on the conductor 71 at intervals, a plurality of pulleys 1 are arranged at intervals, and the sagging amount of the conductor 71 between the starting tower 91 and the destination tower 92 is further reduced. With the arrangement, the wire 71 can keep a certain distance from the bearing rope 81, namely the wire 71 can keep a certain distance from the projects such as scenic spots, forest areas, cultivated lands or buildings under the wire 71, the wire 71 is prevented from drooping to interfere with the projects, so that the wire 71 is safer to unfold and construct, and the wire 71 is prevented from drooping or the drooping amount of the wire is reduced through the pulley 1, so that the projects under the wire 71 to be unfolded do not need to be paused or shelved in advance, and one end of the bearing rope 81 is detached after the unfolding construction is completed, all the pulleys 1 sequentially slide down due to gravity, so that the manual detachment is not needed, the construction period is shortened, and the efficiency of the unfolding construction of the wire 71 is improved.

Preferably, a plurality of trolleys 1 are placed on the load-bearing rope 81, for example, one trolley 1 is provided at intervals of five or four meters in the length direction of the wire 71, thereby further reducing the sagging amount of the wire 71.

Preferably, referring to fig. 1 and 3, a rotating shaft 31 is fixedly disposed on the frame 2, and the pulley 3 is connected to the rotating shaft 31 through a bearing (not shown), so that the pulley 3 rotates relative to the rotating shaft 31.

Preferably, referring to fig. 1 and 2, in the present embodiment, the connecting portion 4 is a connecting hook matched with the wire 71.

In this arrangement, when the lead wire 71 is connected to the connection portion 4, the lead wire 71 only needs to be hooked into the connection hook, and the lead wire 71 can be engaged with the connection hook by gravity. The wire 71 and the connecting hook generate friction force under the action of gravity, so that when the wire 71 moves to the destination tower 92, the wire 71 can drive the connecting hook to move along with the wire 71, and the pulley 3 of the pulley 1 slides along the bearing rope 81.

After the conductor 71 is spread from the starting tower 91 to the destination tower 92, the conductor 71 is straightened, so that the conductor 71 can be automatically separated from the connecting hook without manually detaching the conductor 71 from the connecting part 4, and the efficiency of the spreading construction of the conductor 71 is further improved.

Preferably, referring to fig. 1 and 2, in the present embodiment, a cushion pad 6 is disposed inside the connecting hook.

Optionally, the cushion 6 is a rubber pad. With this arrangement, the friction force between the wire 71 and the coupling hook is increased, so that the wire 71 can move the coupling hook. In addition, the arrangement of the buffer cushion 6 reduces the abrasion between the lead 71 and the connecting hook, and prolongs the service life of the connecting hook.

Preferably, with continuing reference to fig. 1, in the present embodiment, the frame 2 includes a wheel frame 21, a rope frame 22 and a connecting frame 23 connected in sequence; the pulley 3 is mounted on the wheel frame 21, the connecting portion 4 is disposed on the connecting frame 23, a through hole 223 matched with the bearing rope 81 is disposed in the rope frame 22, and after the bearing rope 81 passes through the through hole 223, the pulley 3 can slide along the bearing rope 81.

With such an arrangement, the bearing rope 81 passes through the through hole 223 so that the pulley 3 can be abutted against the bearing rope 81, that is, when the pulley 3 slides along the bearing rope 81, the bearing rope 81 moves relative to the through hole 223, and the through hole 223 is matched with the bearing rope 81, so that the rope frame 22 has a limiting effect on the bearing rope 81, and the pulley 3 is prevented from being separated from the bearing rope 81 to a certain extent, and the pulley 3 slides more stably and stably along the bearing rope 81.

Preferably, with continued reference to fig. 1 and 2, in the present embodiment, the rope rack 22 includes a first plate 221 and a second plate 222 disposed opposite and spaced apart from each other, and a through hole 223 is formed between the first plate 221 and the second plate 222.

Preferably, the first plate 221 is fixedly disposed between the wheel frame 21 and the connecting frame 23, and the second plate 222 is movably connected between the wheel frame 21 and the connecting frame 23.

Alternatively, both ends of the first plate 221 are welded to the wheel frame 21 and the connecting frame 23, respectively; the second plate 222 is rotatably, movably or detachably connected between the wheel frame 21 and the connecting frame 23.

With this arrangement, when the pulley 3 of the trolley 1 needs to be placed on the bearing rope 81 after the bearing rope 81 is placed between the starting tower 91 and the destination tower 92, the second plate 222 only needs to be moved between the wheel frame 21 and the connecting frame 23, for example, the second plate 222 is rotated, moved or detached so that the bearing rope 81 enters the through hole 223, and then the second plate 222 is restored, for example, the second plate 222 is rotated, moved or the second plate 222 is reconnected between the wheel frame 21 and the connecting frame 23, so that the bearing rope 81 is limited in the through hole 223 and the bearing rope 81 is limited.

Optionally, one end of the second plate 222 is rotatably connected to the wheel frame 21 and can rotate towards a direction close to or away from the first plate 221, and the other end is detachably connected to the first plate 221; alternatively, one end of the second plate 222 is rotatably connected to the first plate 221 and can rotate toward or away from the first plate 221, and the other end is detachably connected to the wheel frame 21.

Referring to fig. 1 and 2, an example in which one end of the second plate 222 is rotatably connected to the wheel frame 21 and can rotate in a direction approaching or departing from the first plate 221, and the other end is detachably connected to the first plate 221 will be described below.

After the bearing rope 81 is spread between the starting tower 91 and the destination tower 92, and the pulley 3 of the pulley 1 needs to be placed on the bearing rope 81, the second plate 222 and the first plate 221 only need to be detached, and the second plate 222 is rotated relative to the wheel frame 21, so that the bearing rope 81 can enter the through hole 223 from the gap between the second plate 222 and the first plate 221, and then the second plate 222 is rotated relative to the wheel frame 21, and the second plate 222 and the first plate 221 are connected, so that the bearing rope 81 is limited in the through hole 223, and the bearing rope 81 is limited.

In conclusion, with the arrangement, the tackle 1 can be mounted on the bearing rope 81 without detaching the bearing rope 81 from the starting tower 91, so that the tackle 1 is more convenient to mount.

Alternatively, the second plate 222 may be detachably connected to the first plate 221 by snapping, fastening, or screwing.

For example, referring to fig. 1, the pulley 1 further includes a connecting pin 52 fixedly disposed on the first plate 221, the second plate 222 defines a connecting hole, the connecting pin 52 passes through the connecting hole, and the second plate 222 is detachably connected to the connecting pin 52, that is, the second plate 222 is detachably connected to the first plate 221 through the connecting pin 52. For example, the second plate 222 may be removably coupled to the coupling pin 52 by snapping, or screwing.

Preferably, the connecting pin 52 is in a shape of a stepped shaft, and the second plate 222 is detachably connected to the connecting pin 52 when abutting against a shoulder of the stepped shaft, that is, the stepped shaft plays a role in limiting along with the second plate 222.

Preferably, with continued reference to fig. 1, the tackle 1 further includes a locking pin 51, a pin hole is opened on a side of the connecting pin 52 away from the first plate 221, the connecting pin 52 passes through the connecting hole and the locking pin 51 is inserted into the pin hole to lock the second plate 222 to the first plate 221.

In such an arrangement, when the load-bearing rope 81 needs to be inserted through the through hole 223, the locking pin 51 is first pulled out, the second plate 222 is rotated in a direction away from the shoulder of the connecting pin 52, the second plate 222 is separated from the connecting pin 52, the second plate 222 is detached from the first plate 221, the second plate 222 is continuously rotated in a direction away from the connecting pin 52, the load-bearing rope 81 can enter the through hole 223 from a gap between the second plate 222 and the connecting pin 52, the second plate 222 is rotated in a direction close to the connecting pin 52, the connecting pin 52 is inserted through the connecting hole and the second plate 222 abuts against the shoulder of the connecting pin 52, and the locking pin 51 is inserted into the pin hole, so that the second plate 222 is locked to the first plate 221, the load-bearing rope 81 is restricted in the through hole 223, and the load-bearing rope 81 is restricted.

Preferably, referring to fig. 1 and fig. 2, in the present embodiment, the connecting frame 23 includes a connecting plate 231 and a rib plate 232, the connecting plate 231 is fixedly disposed on the first plate 221, and two ends of the rib plate 232 are respectively fixedly connected to the connecting plate 231 and the connecting pin 52; the connection portion 4 is provided in the connection plate 231.

The rib plate 232 supports the connecting pin 52, so that the connecting pin 52 is more stably and firmly fixed to the first plate 221, the wire 71 is detached from the connecting portion 4, and the wire 71 smoothly falls off along the outer wall of the rib plate 232.

Preferably, both ends of the rib 232 are connected with the connection plate 231 and the connection pin 52 by welding.

Preferably, the connecting hook is formed by bending the side of the connecting plate 231 away from the first plate 221, so that the connecting hook is integrally formed with the first plate 221, the bearing performance of the connecting hook is enhanced, and the cost of the pulley 1 is reduced in the production process.

Preferably, referring to fig. 1 and fig. 2, in the present embodiment, a sliding groove 32 matched with the bearing rope 81 is formed on the circumferential surface of the pulley 3.

With the arrangement, the bearing rope 81 is limited in the sliding groove 32, and the bearing rope 81 is prevented from being separated from the pulley 3, so that the pulley 3 slides along the bearing rope 81 more stably.

Referring to fig. 4, one end of the bearing rope 81 is removed, and all the pulleys 1 slide down in sequence due to gravity, and the pulleys are removed one by one from the starting tower 91 without manual work.

In summary, the process of spreading the wires by using the pulley 1 is as follows:

unfolding the bearing rope 81: the bearing rope 81 is spread and fixed between the starting tower 91 and the destination tower 92, that is, two ends of the bearing rope 81 are respectively and fixedly connected to the starting tower 91 and the destination tower 92.

And (3) unwinding a traction rope 72: the pulling rope 72 is deployed between the starting tower 91 and the destination tower 92.

Connecting the wires 71: the lead wire 71 is connected to the end of the pulling rope 72 near the starting tower 91.

Installing a pulley 1: the pulley 3 is placed on the load-bearing rope 81, and the wire 71 is hung on the connecting hook.

Pulling the pulling rope 72: the traction rope 72 is pulled towards the destination tower 92, so that the lead 71 moves towards the destination tower 92, and the lead 71 drives the pulley 3 of the pulley 1 to slide along the bearing rope 81 until one end of the lead 71 close to the traction rope 72 moves to the destination tower 92.

With this arrangement, the spreading of the conductor 71 is completed, that is, both ends of the conductor 71 are respectively set up on the starting tower 91 and the destination tower 92.

In the moving process of the wire 71, the wire 71 is supported by the connecting hook, so that the wire 71 is prevented from drooping or the drooping amount of the wire 71 is reduced, the wire 71 is always kept at a certain distance from the bearing rope 81, namely, the wire 71 is always kept at a certain distance from projects such as scenic spots, forest zones, cultivated lands or buildings and the like which are positioned under the wire 71, the wire 71 is prevented from drooping and interfering with the projects, the wire 71 unfolding construction operation is safer, in addition, the wire 71 is prevented from drooping through the pulley 1, the projects positioned under the wire 71 to be unfolded are not required to be paused or shelved in advance, and the efficiency of the wire 71 unfolding construction is improved.

It should be noted that in the step of unwinding the hauling cable 72, since the hauling cable 72 has a small weight, the hauling cable 72 can be unwound from the destination tower 92 by a conventional throwing or unmanned aerial vehicle.

Preferably, referring to fig. 4, one pulley 1 is disposed at a certain distance from each other on the wire 71, so that a plurality of pulleys 1 are disposed at intervals, for example, the distance between adjacent pulleys 1 is four meters or five meters.

Preferably, referring to fig. 4, in this embodiment, the step of unfolding the load-bearing rope 81 includes:

and S1, spreading the first transition rope 82 between the starting tower 91 and the destination tower 92.

And S2, connecting the second transition rope 83 to one end of the first transition rope 82 close to the starting tower 91, and pulling the first transition rope 82 towards the destination tower 92 until one end of the second transition rope 83 close to the first transition rope 82 moves to the destination tower 92, so that the unfolding of the second transition rope 83 is completed.

S3, the bearing rope 81 is connected to one end, close to the starting tower 91, of the second transition rope 83, the second transition rope 83 is pulled towards the destination tower 92 until one end, close to the second transition rope 83, of the bearing rope 81 moves to the destination tower 92, two ends of the bearing rope 81 are fixed to the starting tower 91 and the destination tower 92 respectively, and therefore the bearing rope 81 is unfolded and released. Wherein the diameter of the load-bearing rope 81 is larger than the diameter of the second transition rope 83, and the diameter of the second transition rope 83 is larger than the diameter of the first transition rope 82.

It should be noted that the diameter of the first transition rope 82 is smaller, so that the weight of the first transition rope 82 is smaller, and the first transition rope 82 can be spread on the destination tower 92 by means of conventional throwing or unmanned aerial vehicle.

Because the diameter of the bearing rope 81 is larger, the second transition rope 83 is pulled by the first transition rope 82, and the bearing rope 81 is unfolded in a manner that the second transition rope 83 pulls the bearing rope 81, so that the unfolding of the bearing rope 81 is safer.

Preferably, the first transition cord 82, the second transition cord 83 and the load-bearing cord 81 are all insulating cords, so that the wire 71 is more safely deployed.

Wherein, the bearing rope 81 with larger diameter has stronger bearing capacity, and improves the safety of the bearing pulley and the lead.

Preferably, the wire spreading method further comprises the step of disassembling the pulley 1: straightening the lead 71 which is spread on the starting tower 91 and the destination tower 92 to separate the lead 71 from the connecting hook, and fixing two ends of the lead 71 on the starting tower 91 and the destination tower 92 respectively; the end of the bearing rope 81 is detached from the starting tower 91 or the destination tower 92 and moved downward to incline the bearing rope 81, thereby causing the sheave 3 to slide downward along the bearing rope 81 until the sheave 3 is disengaged from the bearing rope 81.

By the arrangement, the pulley 1 is detached from the bearing rope 81, and preparation is made for the next wire 71 unfolding stage.

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 or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. The pulley is characterized by comprising a rack (2), and a pulley (3) and a connecting part (4) which are arranged on the rack (2);

pulley (3) rotate connect in frame (2), connecting portion (4) set firmly in frame (2), just pulley (3) are used for setting up in bearing rope (81), connecting portion (4) are used for connecting wire (71).

2. A tackle as claimed in claim 1, wherein the connecting portion (4) is a hook that mates with the conductor (71).

3. A tackle as claimed in claim 2, wherein a cushion (6) is provided within the attachment hook.

4. A tackle as claimed in claim 1, characterized in that the frame (2) comprises a wheel frame (21), a rope frame (22) and a connecting frame (23) connected in sequence;

pulley (3) install in wheel carrier (21), connecting portion (4) set up in link (23), just be provided with in rope frame (22) with bearing rope (81) assorted perforation (223), bearing rope (81) pass behind perforation (223), pulley (3) can be followed bearing rope (81) slide.

5. A tackle as claimed in claim 4, wherein the rope holder (22) includes a first plate (221) and a second plate (222) that are opposed and spaced apart, the first plate (221) and the second plate (222) forming the through hole (223) therebetween.

6. A tackle as claimed in claim 5, wherein the first plate (221) is fixedly arranged between the wheel frame (21) and the connecting frame (23), and the second plate (222) is movably connected between the wheel frame (21) and the connecting frame (23).

7. A tackle as claimed in claim 6, wherein the second plate (222) has one end rotatably connected to the wheel frame (21) and is capable of rotating in a direction towards or away from the first plate (221) and another end detachably connected to the first plate (221).

8. A tackle as claimed in claim 7, wherein the tackle further includes a locking pin (51) and a connecting pin (52) secured to the first plate (221), the connecting pin (52) having a pin hole formed in a side thereof remote from the first plate (221);

the second plate (222) is provided with a connecting hole, the connecting pin (52) passes through the connecting hole, and the locking pin (51) is inserted into the pin hole to lock the second plate (222) to the first plate (221).

9. Tackle according to claim 8, wherein the connecting frame (23) comprises a connecting plate (231) and a rib (232), wherein the connecting plate (231) is fixedly arranged on the first plate (221), and two ends of the rib (232) are fixedly connected to the connecting plate (231) and the connecting pin (52), respectively;

the connecting part (4) is arranged on the connecting plate (231).

10. A tackle as claimed in any one of claims 1-9, wherein the pulley (3) has a groove (32) formed in its circumferential surface for engaging the load-bearing rope (81).

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