CN203486803U - Crane, counterweight device and rope assembly hanging mechanism - Google Patents

Abstract

The utility model discloses a rope row hooking mechanism, which comprises a telescopic oil cylinder, a movable pulley, a fixed pulley and a rope. On the fixed end of the oil cylinder, the other end passes through the movable pulley and the fixed pulley in turn and is provided with a articulated part for hanging the balance weight tray. The fixed end of the telescopic oil cylinder is provided with a mounting hole for being installed on the side wall of the turntable tail. Since the above-mentioned rope row hooking mechanism can complete the installation of the whole mechanism directly by setting the installation holes on the telescopic oil cylinder, the number of installation holes is relatively reduced, thereby reducing the machining workload when the rope row hooking mechanism is installed. In addition, since the whole rope row hooking mechanism can be installed on the turntable through the telescopic oil cylinder, there is no need to set guide rails on the turntable, thereby avoiding a series of problems caused by setting guide rails. The utility model also discloses a balance weight device and a crane.

Description

Crane, counterweight device and rope row hooking mechanism

technical field

The utility model relates to the technical field of engineering machinery, in particular to a crane, a counterweight device and a rope row hooking mechanism.

Background technique

Due to the existence of the rollover moment when the crane is working, a stable moment is required to meet the stability of the crane. The rollover moment refers to the sum of the products of all the weights on the hoisting side of the crane and the distance from each center of gravity to the center of rotation; the stable moment is It refers to the sum of the products of all the weights in the opposite direction of the hoisting side of the crane and the distance from the center of gravity to the center of slewing. The existence of the counterweight is to increase the stabilizing moment. Therefore, the weight and position of the counterweight determine the lifting performance and stability of the crane.

In order to meet the demand for counterweights in different operating conditions of large-tonnage and super-large-tonnage all-terrain cranes, combined counterweights are generally used. The combined counterweight is composed of several counterweights placed on the counterweight pallet. Common combined balance weight attachment methods include lift-up type, self-top type and hydraulic rope row type. Among them, when the lift-up type and self-top type are installed, the balance weight is hoisted to a suitable position on the frame, and the telescopic Self-installation is realized by jacking up the oil cylinder; the hydraulic rope row type is to hoist the balance weight on the ground, and realize the installation of the balance weight through the rope row hook mechanism. With the development of super-large-tonnage cranes, the whole vehicle is required to be more and more compact. In order to meet the lifting performance of super-large-tonnage cranes and the overall stability of the crane under the boom length and large amplitude, the required stabilizing torque is constantly increasing. Large, so that the mass of the balance weight increases. Therefore, the lift-up and self-top installation methods in which the balance weight is hoisted to the vehicle frame will not be advisable.

Please refer to FIG. 1 . FIG. 1 is a structural schematic diagram of a rope row hooking mechanism in the prior art.

The hydraulic rope row balance weight includes a balance weight tray 4', a combined balance weight 3' and a rope row hooking mechanism, wherein the rope row hooking mechanism includes a telescopic oil cylinder 21', a movable pulley assembly 22', a fixed pulley, and a guide rail 26' and rope 24'. The fixed end 211' of the telescopic oil cylinder 21' is fixed to the side wall of the tail of the turntable 1' through the fixed hinge point 213', the telescopic end 212' of the telescopic oil cylinder 21' is fixed with a movable pulley assembly 22', and the guide rail 26' is fixed at the tail of the turntable 1' and support the movable pulley assembly 22', the fixed pulley 231' and the fixed pulley 232' are respectively fixed on the side wall at the end of the turntable 1' through their respective fixed hinge points, and the ropes include ropes 24' and ropes 25', and the ropes 24' The first end to the second end of the rope bypasses the fixed pulley 231' and the movable pulley assembly 22' in turn, and its first end is detachably connected to the rope hinge point of the counterweight tray 4', and the second end of the rope 24' is fixed by The hinge point 241' is fixed on the side wall of the turntable 1' tail, and the first end to the second end of the rope 25' goes around the fixed pulley 232' and the movable pulley assembly 22' in turn, and its first end is connected to the balance weight tray 4'. The hinge point of the rope is detachably articulated, and the second end of the rope 25' is fixed on the side wall of the tail of the turntable 1' through the fixed hinge point 251'.

The balance weights required for lifting during work are placed on the upper plane at both ends of the balance weight tray 4', the balance weights are placed neatly and fixed to form a combined balance weight 3', and the turntable 1' is rotated so that the rear end of the turntable 1' rotates. Directly above the balance weight pallet 4', connect the suspended end of the rope 24' and the rope 25' to the balance weight pallet 4' with a pin; drive the telescopic end 212' of the telescopic oil cylinder 21' to stretch out, and the movable pulley assembly 22' Move along the guide rail 26' inside the rear tail frame of the turntable 1', thereby lifting the rope 24' and the rope 25' to complete the hooking.

Since the ropes, fixed pulleys and telescopic oil cylinders in the above-mentioned hydraulic rope row type counterweight all need to be fixed on the side wall at the rear of the turntable, multiple installation holes need to be opened on the corresponding turntable, thus increasing the machine speed. Processing workload. In addition, because the guide rail is manually welded on the inner side of the turntable tail frame, the inevitable manual point error and welding deformation will cause interference or assembly difficulties of the entire system during assembly.

To sum up, how to reduce the machining workload during installation of the rope row hooking mechanism has become a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of this utility model is to provide a rope row hooking mechanism to reduce the machining workload when the rope row hooking mechanism is installed; another purpose of this utility model is to provide a counterweight device; the utility model's first Three objects are to provide a crane.

In order to achieve the above object, the utility model provides a rope row hooking mechanism, including a telescopic oil cylinder, a movable pulley, a fixed pulley and a rope, the shaft of the movable pulley is connected to the telescopic end of the telescopic oil cylinder, and the shaft of the fixed pulley is connected to the telescopic end of the telescopic oil cylinder. On the fixed end of the telescopic oil cylinder, one end of the rope is fixed on the fixed end of the telescopic oil cylinder, and the other end passes through the movable pulley and the fixed pulley in turn and is provided with an articulated part for articulated balance weight tray, The fixed end of the telescopic oil cylinder is provided with an installation hole for installation on the side wall of the tail of the turntable.

Preferably, in the above-mentioned rope row hooking mechanism, the movable pulley is axially connected to the telescopic end of the telescopic oil cylinder through a guide mechanism, the middle part of the guide mechanism is fixed on the telescopic end of the telescopic oil cylinder, and the movable pulley is arranged on the telescopic end of the telescopic oil cylinder. Both ends of the guide mechanism.

Preferably, in the above-mentioned rope row hooking mechanism, the fixed pulley is fixed on the fixed end of the telescopic oil cylinder through a pulley bracket.

Preferably, in the above-mentioned rope row hooking mechanism, the pulley bracket includes a first vertical plate and a second vertical plate extending along the axial direction of the telescopic oil cylinder, and the fixed pulley is arranged on the first vertical plate through a pin shaft. between the board and the second vertical board.

Preferably, in the above rope row hooking mechanism, a connecting plate is provided between the rope and the telescopic oil cylinder, the rope is fixed on the connecting plate through a pin, and the connecting plate is hinged on the first On the pin shaft between the vertical board and the second vertical board.

Preferably, in the above-mentioned rope row hooking mechanism, a guide pulley is provided at the end of the fixed end of the telescopic oil cylinder, and the rope passes through the guide pulley.

Preferably, in the aforementioned rope row hooking mechanism, the guide pulley is fixed at the end of the fixed end through a fixed bracket, and the fixed bracket includes a first side plate and a second side plate extending along the axial direction of the telescopic oil cylinder. plate, and the guide pulley is hinged between the first side plate and the second side plate through a pin shaft.

Preferably, in the above rope row hooking mechanism, the first side plate and the second side plate are also provided with a protective cover to prevent the rope from falling off.

Preferably, in the above-mentioned rope row hooking mechanism, the installation holes are holes for installing pin shafts on the pulley bracket and the fixed bracket.

In the above technical solution, the rope row hooking mechanism provided by the utility model includes a telescopic oil cylinder, a movable pulley, a fixed pulley and a rope, the shaft of the movable pulley is connected to the telescopic end of the telescopic oil cylinder, and the shaft of the fixed pulley is connected to the telescopic end of the telescopic oil cylinder. On the fixed end of the telescopic oil cylinder, one end of the rope is fixed on the fixed end of the telescopic oil cylinder, and the other end passes through the movable pulley and the fixed pulley in turn and is provided with an articulated part to articulate the balance weight tray. The fixed end of the telescopic oil cylinder is provided with a mounting hole for mounting on the turntable. Compared with the content introduced in the background technology, the above-mentioned rope row hooking mechanism can complete the installation of the whole mechanism directly by setting installation holes on the telescopic oil cylinder, and the number of installation holes is relatively reduced, thereby reducing the installation cost of the rope row hooking mechanism. The workload of machining. In addition, since the whole rope row hooking mechanism can be installed on the turntable through the telescopic oil cylinder, there is no need to set guide rails on the turntable, thereby avoiding a series of problems caused by setting guide rails.

The utility model also provides a balance weight device, which includes a balance weight tray and combined balance weights arranged at both ends of the balance weight tray, and also includes the rope row hooking mechanism described in any of the above technical solutions, and the rope row The hooking part of the hooking mechanism is connected with the balance weight tray. Since the rope row hooking mechanism has the above-mentioned technical effects, the crane with the rope row hooking mechanism should also have corresponding technical effects.

The utility model also provides a crane, which includes a turntable, and also includes the balance weight device in the above technical solution. The telescopic oil cylinder in the balance weight device is connected to the side of the tail of the turntable by setting a pin shaft in the installation hole. wall connection. Since the counterweight device has the above-mentioned technical effects, the crane with the counterweight device should also have corresponding technical effects.

Description of drawings

Fig. 1 is the structural representation of counterweight device in the prior art;

Fig. 2 is the structural representation of the balance weight device provided by the utility model;

Fig. 3 is a structural schematic diagram of a rope row hooking mechanism provided by the utility model;

Fig. 4 is a structural schematic diagram of another rope row hooking mechanism provided by the utility model;

Fig. 5 is an enlarged structural schematic diagram of the rope row hooking mechanism in Fig. 4 .

In Figure 1 above:

Turntable 1', telescopic oil cylinder 21', fixed end 211', telescopic end 212', fixed hinge point 213', movable pulley assembly 22', fixed pulley 231', fixed pulley 232', rope 24', fixed hinge point 241', Rope 25', fixed hinge point 251', guide rail 26', combined balance weight 3', balance weight tray 4'

In Figure 2-5 above:

Turntable 1, rope row hooking mechanism 2, telescopic oil cylinder 21, fixed end 211, telescopic end 212, pulley bracket 213, first vertical board 213-1, second vertical board 213-2, pulley bracket 214, first vertical board 214-1, second vertical plate 214-2, fixed bracket 215, first side plate 215-1, second side plate 215-2, protective cover 216, guide mechanism 22, fixed pulley 231, fixed pulley 232, rope 24 , connecting plate 241, articulated part 242, weight 243, rope 25, connecting plate 251, articulated part 252, movable pulley 261, movable pulley 262, combined balance weight 3, balance weight tray 4

Detailed ways

The core of the utility model is to provide a rope row hooking mechanism to reduce the machining workload when the rope row hooking mechanism is installed; another core of the utility model is to provide a counterweight device; the utility model's first The triple core is to provide a kind of crane.

It should be noted that the "upper", "lower", "left" and "right" involved in this article are defined based on the positions of the components in Figures 2 to 5 and the positions of the components in the figure It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In order to make those skilled in the art better understand the technical solutions provided by the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 2 to Fig. 4, Fig. 2 is the structural schematic diagram of the balance weight device provided by the utility model; Fig. 3 is the structural schematic diagram of the rope row hooking mechanism provided by the utility model; Fig. 4 is provided by the utility model Schematic diagram of the enlarged structure of the rope row hooking mechanism.

The rope row hooking mechanism provided by the utility model includes a telescopic oil cylinder 21, a movable pulley 261, a fixed pulley 231 and a rope 24, wherein the movable pulley 261 is axially connected to the telescopic end 212 of the telescopic oil cylinder 21, and the fixed pulley 231 is axially connected to the telescopic oil cylinder On the fixed end 211 of 21, one end of the rope 24 is fixed on the fixed end 211 of the telescopic oil cylinder 21, and the other end passes through the movable pulley 261 and the fixed pulley 231 in turn and is provided with a articulated part 242 for hanging the balance weight tray 4, and the telescopic oil cylinder 21 The fixed end 211 is provided with a mounting hole for mounting on the turntable 1 .

After the mobile crane chooses a suitable location, set up the outriggers; the mobile crane lifts the balance weight pallet 4 to the position behind the crane; The weights are placed neatly and fixed, and the turntable 1 is rotated so that the rear end of the turntable 1 is turned directly above the balance weight tray 4, and the hook part of the rope 24 is connected with the balance weight tray 4 with a pin; the telescopic oil cylinder 21 is driven , the telescopic end 212 of the telescopic oil cylinder 21 protrudes toward the front of the turntable 1, and drives the movable pulley 261 to run toward the front of the turntable 1, thereby gradually lifting the counterweight tray 4 and the counterweight placed on the counterweight tray 4 through the rope 24 on the movable pulley 261 block to implement hooking.

Compared with the content introduced in the background technology, the above-mentioned rope row hooking mechanism 2 can complete the installation of the whole mechanism directly by setting the installation holes on the telescopic oil cylinder 21, and the number of installation holes is relatively reduced, thereby reducing the workload of machining . In addition, since the whole rope row hooking mechanism can be installed on the turntable 1 through the telescopic oil cylinder 21, there is no need to set guide rails on the turntable 1, thereby avoiding a series of problems caused by setting guide rails.

For convenience of description, in a specific embodiment, the fixed pulley includes a fixed pulley 231 and a fixed pulley 232 , the movable pulley includes a movable pulley 261 and a movable pulley 262 , and the rope includes a rope 24 and a rope 25 . As shown in Figure 3, the movable pulley 261 and the movable pulley 262 are axially connected to the telescopic end 212 of the telescopic oil cylinder 21 through the guide mechanism 22, the middle part of the guide mechanism 22 is fixed on the telescopic end 212 of the telescopic oil cylinder 21, and the movable pulley 261 and the movable pulley 262 are arranged on the guide mechanism. 22 ends. When the telescopic end 212 of the telescopic oil cylinder 21 is telescopic, the guide mechanism 22 drives the movable pulley 261 and the movable pulley 262 to move forward together, and the movable pulley 261 and the movable pulley 262 rotate around themselves under the action of the rope 24 and the rope 25.

The fixed pulley 231 is fixed on the fixed end 211 of the telescopic oil cylinder 21 through the pulley bracket 213 , and the fixed pulley 232 is fixed on the fixed end 211 of the telescopic oil cylinder 21 through the pulley bracket 214 . There are many ways to realize the fixing of the fixed pulley 231 and the fixed pulley 232 , and this embodiment only introduces the structure of fixing the fixed pulley 231 by the pulley bracket 213 as an example.

The pulley bracket 213 includes a first vertical plate 213-1 and a second vertical plate 213-2 extending along the axial direction of the telescopic oil cylinder 21, and the fixed pulley 231 is arranged on the first vertical plate 213-1 and the second vertical plate through a pin shaft. Between 213-2. The pulley bracket 214 for fixing the fixed pulley 232 has the same structure as the pulley bracket 213, and the pulley bracket 214 includes a first vertical plate 214-1 and a second vertical plate 214-2.

Rope 24 and rope 25 and telescopic oil cylinder 21 also have multiple fixing forms, as long as one end of rope 24 and rope 25 can be fixed on the fixed end 211 of telescopic oil cylinder 21. 24. A connecting plate 241 is arranged between the rope 24 and the telescopic oil cylinder 21, the rope 24 is fixed on the connecting plate 241 through a pin, and the connecting plate 241 is hinged between the first vertical plate 213-1 and the second vertical plate 213-2 between pins. A connecting plate 251 is arranged between the rope 25 and the telescopic oil cylinder 21, and the rope 25 is fixed on the connecting plate 251 by a pin, and the connecting plate 251 is hinged on the pin between the first vertical plate 214-1 and the second vertical plate 214-2. on axis

The above is a brief description of the structure of each component in the rope row hooking mechanism 2, and the positional relationship of each component will be described in detail below.

In this embodiment, the fixed pulley 232 , the movable pulley 261 and the rope 25 lift the left end of the balance weight tray 4 , and the fixed pulley 231 , the movable pulley 261 and the rope 24 lift the right end of the balance weight tray 4 .

Wherein, the pulley support 214 corresponding to the fixed pulley 232 is arranged below the middle part of the fixed end 211 of the telescopic oil cylinder 21, and one end of the rope 25 is hinged on the connecting plate 251 by a pin, and the other end is bypassed under the driven pulley 262, and then from The top of the fixed pulley 232 is wound and suspended; and the pulley bracket 213 corresponding to the fixed pulley 231 is arranged on the right end of the fixed end 211 of the telescopic oil cylinder 21, and one end of the rope 24 is hinged on the connecting plate 241 by a pin shaft, and the other end The following of the driven pulley 261 goes around, and then winds from the top of the fixed pulley 231 and is in a suspended state.

In order to further reduce the workload of machining, the installation holes on the telescopic oil cylinder 21 in the embodiment of the utility model are the holes for installing the pin shaft on the pulley bracket 213 and the pulley bracket 214, and the pin shaft completes the fixed pulley 231 and the fixed pulley 232 at the same time. , the fixing of the connecting plate 241, the connecting plate 251 and the telescopic oil cylinder 21. Since there are only two holes for installing pin shafts, in order to further increase the stability of the telescopic oil cylinder 21, an additional installation hole can be provided to hinge the telescopic oil cylinder 21 on the side wall of the turntable 1 tail.

In a kind of specific embodiment, as shown in Figure 4 and Figure 5, in this embodiment, the structure of fixed pulley 231, fixed pulley 232, pulley support 213, pulley support 214 is all identical with the content described in above-mentioned technical scheme, The difference is that the fixed pulley 231 in this embodiment is arranged above the middle part of the telescopic oil cylinder 21, and the fixed pulley 232 is arranged under the middle part of the telescopic oil cylinder 21, and the two are designed symmetrically. In addition, in order to make the suspended end of the rope 24 and the rope 25 in a vertical state after the balance weight pallet 4 is mounted, a guide pulley 233 is also provided at the end of the fixed end 211 of the telescopic oil cylinder 21 in this embodiment ( Not marked in the figure), the rope 24 passes through the guide pulley 233.

The above-mentioned guide pulley 233 is preferably arranged on the right end of the telescopic oil cylinder 21. In addition, the guide pulley 233 is fixed on the end of the fixed end 211 through a fixed bracket 215. The fixed bracket 215 includes a first shaft extending along the axial direction of the telescopic oil cylinder 21. The side plate 215-1 and the second side plate 215-2, and the guide pulley 233 are hinged between the first side plate 215-1 and the second side plate 215-2 through pin shafts.

In the rope row hooking mechanism of the above structure, one end of the rope 24 is hinged on the connecting plate 241 through a pin shaft, and the other end passes from the top of the driven pulley 261 to the bottom of the movable pulley 261, and then passes from the bottom of the fixed pulley 231 to the bottom of the fixed pulley 231. The top of the guide pulley 233. Since the rope 24 passes above the guide pulley 233, in order to prevent the rope 24 from coming off on the guide pulley 233, the fixed bracket 215 for installing the guide pulley 233 is also provided with a protective cover 216 to prevent the rope 24 from coming off. Specifically, the protective cover 216 is a bar fixed on the first side plate 215-1 and the second side plate 215-2 by pins. The winding method of the rope 25 is the same as that of the above-mentioned embodiment, and will not be repeated here.

It should be noted here that, in order to ensure that the ropes 24 and 25 can withstand sufficient strength, each set of ropes can use multiple ropes, which can be set as required.

In addition, because the rope 24 and the rope 25 need to be lowered when the balance weight is installed, during the falling process of the rope 24 and the rope 25, because the weight of the rope 24 and the rope 25 is relatively light, in order to facilitate the falling of the rope 24 and the rope 25, you can put it on the rope. 24 and rope 25 are provided with a weight 243 at one end of the hooking portion.

In this embodiment, in addition to the holes for installing pin shafts on the pulley bracket 213 and the pulley bracket 213, there are also holes for installing pin shafts on the fixed bracket 215, and the three holes can form a stable structure. Therefore, these three holes serve as Installing the telescopic oil cylinder 21 in the mounting hole on the side wall at the rear of the turntable 1 can make the telescopic oil cylinder 21 more stable, and the running process of the rope 24 and the rope 25 is more stable.

The utility model also discloses a balance weight device, which includes a balance weight tray 4 and a combined balance weight 3 arranged at both ends of the balance weight tray 4, and also includes a rope row hooking mechanism 2 of any of the above-mentioned technical solutions, and the rope row hooks The hooking part of the mechanism 2 is connected with the balance weight tray 4 . Since the rope row hooking mechanism has the above-mentioned technical effects, the crane with the rope row hooking mechanism should also have corresponding technical effects.

After the mobile crane chooses a suitable location, set up the outriggers; the mobile crane lifts the balance weight pallet 4 to the position behind the crane; The weights are placed neatly and fixed, and the turntable 1 is rotated so that the rear end of the turntable 1 is turned directly above the balance weight tray 4, and the articulated parts 242 and 252 of the rope 24 and the rope 25 are used with the balance weight tray 4. pin connection; drive the telescopic oil cylinder 21, the telescopic end 212 of the telescopic oil cylinder 21 stretches out to the front of the turntable 1, and drives the movable pulley 261 and the movable pulley 262 to run to the front of the turntable 1, thereby passing through the rope 24 and the rope 25 on the movable pulley 261 and the movable pulley 262 gradually Lift the counterweight tray 4 and the counterweights placed on the tray; when the counterweight tray 4 and the counterweight are lifted to the desired position, drive the counterweight locking cylinder, and the telescopic end 212 of the counterweight locking cylinder stretches out to balance The fixing device on the heavy pallet 4 is fixed to the turntable 1, thereby achieving the mechanical fixation of the balance weight pallet 4 and the counterweight on the pallet to the turntable 1. The unloading process of the balance weight tray 4 and the balance weight is opposite to the steps of the above-mentioned installation process.

The utility model also discloses a crane, which includes a turntable 1 and the balance weight device in the above technical solution. The telescopic oil cylinder 21 in the balance weight device is connected to the side wall at the tail of the turntable 1 by setting a pin in the installation hole. The balance weight device is the balance weight device described in any of the above schemes. Since the counterweight device has the above-mentioned technical effects, the crane with the counterweight device should also have corresponding technical effects, which will not be repeated here.

Above, the rope row hooking mechanism and the crane provided by the utility model have been introduced in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, on the premise of not breaking away from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (11)

1. A rope row hooking mechanism, comprising a telescopic oil cylinder (21), a movable pulley (261), a fixed pulley (231) and a rope (24), characterized in that the movable pulley (261) is axially connected to the telescopic oil cylinder The telescopic end (212) of (21), the fixed pulley (231) is axially connected to the fixed end (211) of the telescopic oil cylinder (21), and one end of the rope (24) is fixed to the telescopic oil cylinder (21 ) on the fixed end (211), the other end passes through the movable pulley (261) and the fixed pulley (231) in turn and is provided with a hooking part (242) for hanging the balance weight tray (4), the telescopic The fixed end (211) of the oil cylinder (21) is provided with a mounting hole for mounting on the side wall of the tail of the turntable (1). 2. The rope row hooking mechanism according to claim 1, characterized in that, the movable pulley (261) is axially connected to the telescopic end (212) of the telescopic oil cylinder (21) through a guide mechanism (22), and the The middle part of the guide mechanism (22) is fixed on the telescopic end (212) of the telescopic oil cylinder (21), and the movable pulley (261) is arranged at both ends of the guide mechanism (22). 3. The rope row hooking mechanism according to claim 2, characterized in that, the fixed pulley (231) is fixed on the fixed end (211) of the telescopic oil cylinder (21) through a pulley bracket (213). 4. The rope row hooking mechanism according to claim 3, characterized in that, the pulley bracket (213) includes a first vertical plate (213-1) extending along the axial direction of the telescopic cylinder (21) and The second vertical plate (213-2), the fixed pulley (231) is arranged between the first vertical plate (213-1) and the second vertical plate (213-2) through a pin shaft. 5. The rope row hooking mechanism according to claim 4, characterized in that, a connecting plate (241) is provided between the rope (24) and the telescopic oil cylinder (21), and the rope (24) passes through The pin shaft is fixed on the connecting plate (241), and the connecting plate (241) is hinged on the pin shaft between the first vertical plate (213-1) and the second vertical plate (213-2) superior. 6. The rope row hooking mechanism according to claim 5, characterized in that, the end of the fixed end (211) of the telescopic oil cylinder (21) is also provided with a guide pulley (233), and the rope (24) Pass through the guide pulley (233). 7. The rope row hooking mechanism according to claim 6, characterized in that, the guide pulley (233) is fixed to the end of the fixed end (211) through a fixed bracket (215), and the fixed bracket ( 215) includes a first side plate (215-1) and a second side plate (215-2) extending along the axial direction of the telescopic cylinder (21), and the guide pulley (233) is hinged on the Between the first side panel (215-1) and the second side panel (215-2). 8. The rope row hooking mechanism according to claim 7, characterized in that, the first side plate (215-1) and the second side plate (215-2) are also provided with a device to prevent the rope from (24) Shedding guard (216). 9. The rope row hooking mechanism according to claim 8, characterized in that, the installation holes are holes on the pulley bracket (213) and the fixed bracket (215) for installing pin shafts. 10. A counterweight device, comprising a counterweight tray (4) and combined counterweights arranged at both ends of the counterweight tray (4), characterized in that it includes the rope according to any one of claims 1 to 9 A row hooking mechanism, the hooking part (242) of the rope row hooking mechanism is connected with the balance weight tray (4). 11. A crane, comprising a turntable (1), characterized in that it also includes the counterweight device according to claim 10, the telescopic oil cylinder (21) in the counterweight device is configured by setting a pin shaft in the installation hole It is connected with the side wall at the tail of the turntable (1).

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