CN205204702U - Winding system , ladder frame and hook and ladder - Google Patents

Abstract

The utility model relates to the field of hoisting systems, and discloses a hoisting system, a ladder frame and a ladder fire truck. The hoisting system includes a single drum (1), which can drive the single drum ( 1) The driver (2) rotating forward and reverse and the first rope (3) and the second rope (4) respectively wound on the outer peripheral surface of the reel (1), the first rope (3) One end and one end of the second rope (4) are respectively fixed to the reel (1), when the driver (2) drives the reel (1) to rotate, the first rope (3) and One of the second ropes (4) is let out and the other is taken in. The hoisting system of the utility model has the advantages of better synchronization and stability.

Description

Hoist system, ladder frame and aerial ladder fire truck

technical field

The utility model relates to the field of hoisting systems, in particular to a hoisting system. In addition, the utility model also relates to a ladder frame and a ladder fire truck.

Background technique

The expansion and contraction of the ladder frame of the aerial ladder fire truck is mainly completed by the hydraulic cylinder or the winch system pulling the wire rope through the pulley block. When the rated working height of the fire truck is low, the oil cylinder is mainly used to provide power for the movement of the wire rope. The structure is compact, and the winch system has been applied because of its large rope capacity.

In the prior art, in order to realize the movement of the ladder frame in two directions, the hoisting system often includes two independent hoisting mechanisms, one for accommodating the wire rope used for extending the ladder frame, and the other for accommodating the wire rope used for retracting the ladder frame, And under the control of a set of hydraulic system, the expansion and contraction of the ladder frame is realized. A similar hoisting system (as shown in Figure 1) usually includes a reel 1 and a hydraulic motor 2 capable of driving the reel 1 to rotate. Due to the high rated working height of the fire truck, in order to meet the telescopic requirements of the ladder frame, the required wire rope length At the same time, the diameter of the steel wire rope used is also larger in order to ensure the safety factor of the design due to the weight of the ladder frame. Based on the above two points, the radius of the rope groove and the rope capacity of the drum 1 also need to be increased accordingly, resulting in an excessively large external dimension of the drum 1 . According to the actual situation of the aerial ladder fire truck, the best place to place the reel 1 is under the bracket at the end of the basic ladder frame. The space here is relatively limited, and it is difficult to realize the parallel arrangement shown in Figure 1. The arrangement of the hydraulic system and the pulley block It is also relatively difficult, causing the structure of the boarding part to be bloated, which affects the efficiency of the transmission. At the same time, in order to make the two hoisting mechanisms rotate synchronously, the prior art ensures that the output flow of the hydraulic motor 2 is the same by using a diverter and flow valve, so that The rotational speeds of the two reels 1 are the same. But in the actual situation, there are many unfavorable factors, such as the internal leakage of the hydraulic motor 2, the accuracy error of the diverter and flow valve, etc., which will affect the stability of the entire hydraulic system, making it difficult to synchronize the speed of the two drums 1, causing The problem that the wire rope is too loose or too tight has laid hidden dangers for the safe work of the aerial ladder fire truck. It can be seen that the existing hoisting system has the disadvantages of taking up too much space, being difficult to arrange reasonably, having poor synchronization and poor stability.

In view of this, it is necessary to provide a winch system with better synchronization and stability.

Utility model content

The technical problem to be solved by the utility model is to provide a winch system with good synchronization and stability, a ladder frame with good synchronization and stability, and a ladder fire protection system with good synchronization and stability. car.

In order to solve the above-mentioned technical problems, the utility model provides a hoisting system, which includes a single drum, a driver capable of driving the single drum to rotate in the forward and reverse directions, and a driver that is respectively wound on the outer peripheral surface of the drum. A first rope and a second rope, one end of the first rope and one end of the second rope are respectively fixed to the reel, when the driver drives the reel to rotate, the first rope and the second rope One of the second ropes pays out and the other takes in.

Preferably, one end of the first rope and one end of the second rope are respectively fixed to two ends of the reel, and the first rope and the second rope are respectively passed along the two ends of the reel. The same winding direction winds towards the middle of the mandrel.

Preferably, a helically extending rope groove is provided on the outer peripheral surface of the reel, and the first rope and the second rope are respectively wound in the rope groove.

Preferably, the rope groove includes a common portion around which the first rope and the second rope are alternately wound.

Preferably, the drive is a hydraulic motor.

On the basis of the above-mentioned technical solution of the hoisting system, the utility model also provides a ladder frame, which includes a basic ladder frame hinged on the installation platform through a hinge shaft, and can be moved along the extending direction of the basic ladder frame. The telescopic ladder frame and the winch system of the utility model are slidably connected to the basic ladder frame. The telescopic ladder frame is provided with a drive pulley block for driving the telescopic ladder frame to slide. The first rope One end of the second rope is connected to one end of the foundation ladder frame around one pulley in the drive pulley set, and the other end of the second rope is connected to the other end of the foundation ladder frame around the other pulley in the drive pulley set .

Preferably, the hoisting system further includes a self-guiding wire passing wheel axially movably mounted on the hinged shaft, the central axis of the self-guiding wire passing wheel is parallel to the central axis of the reel, and A groove is formed on its outer peripheral surface for contacting with the second rope, and the second rope is partially wound in the groove of the self-guiding wire pulley.

Preferably, threads are formed on the outer peripheral surface of the installation shaft, and the self-guiding wire passing wheel is provided with an installation hole for connecting with the installation shaft, and corresponding to the threads are formed on the peripheral surface of the installation hole. Mating thread.

Preferably, the basic ladder frame includes a mounting end and a telescopic end, and the telescopic ladder frame protrudes from the telescopic end or shrinks into the interior of the basic ladder frame from the telescopic end, and the ladder frame also includes a The bracket at the installation end of the basic ladder frame, the hoisting system and the hinge shaft are all arranged on the bracket.

In addition, on the basis of the above-mentioned technical solution of the ladder frame, the utility model also provides an aerial ladder fire truck, which includes the ladder frame described in the utility model.

The hoisting system of the present invention includes a single reel, a driver capable of driving the single reel to rotate forward and reverse, and the first rope and the second rope respectively wound on the outer peripheral surface of the reel. At the same time, one end of the first rope One end of the rope and the second rope are respectively fixed to the reel. When the driver drives the reel to rotate, one of the first rope and the second rope is released, and the other is taken up, so that the reel is driven forward and reverse by the driver. The rotation can make the first rope and the second rope be released or retracted synchronously at the same time, avoiding the problem that the first rope and the second rope are too loose or too tight. It can be seen that the winch system of the present invention has better synchronization and stability. good points. In addition, since the ladder frame and ladder fire truck of the present invention include the winch system of the present invention, they also have the above advantages.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of the winch system of prior art;

Fig. 2 is a schematic structural view of a winch system according to a specific embodiment of the present invention;

Fig. 3 is a top view of the winch system in Fig. 2;

Fig. 4 is a schematic structural view of a ladder frame according to a specific embodiment of the present invention;

Fig. 5 is a top view of the ladder frame in Fig. 4 .

Explanation of reference signs

1. Reel 2. Driver

3. The first rope 4. The second rope

5. Self-guided wire passing wheel 6. Installation shaft

7. Rope groove 8. Basic ladder frame

9. Telescopic ladder frame 10. Drive pulley block

11. Bracket 12a, first reversing pulley

12b, the second reversing pulley 13, the first reversing pulley

14. The second re-direction pulley

detailed description

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

The utility model provides a hoisting system, specifically, as shown in Fig. 2 and Fig. 3, the hoisting system includes a single reel 1, a driver 2 capable of driving the single reel 1 to rotate forward and reverse, and respectively winding The first rope 3 and the second rope 4 on the outer peripheral surface of the reel 1, one end of the first rope 3 and one end of the second rope 4 are respectively fixed to the reel 1, when the When the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 is released, and the other is taken up.

It should be noted that the specific structural forms of the reel 1 , the driver 2 , the first rope 3 and the second rope 4 can be set according to requirements, and these all belong to the scope of the technical concept of the present invention. For example, the driver 2 may directly be a hydraulic motor, or may include a motor and a reducer connected to the motor, and the first rope 3 and the second rope 4 may be steel wire ropes or other ropes.

The hoisting system of the present invention includes a single reel 1, a driver 2 capable of driving the forward and reverse rotation of the single reel 1, and the first rope 3 and the second rope 4 respectively wound on the outer peripheral surface of the reel 1. One end of the first rope 3 and one end of the second rope 4 are respectively fixed to the reel 1, when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 releases the rope, and the other Or take in the rope, so that the forward and reverse rotation of the reel 1 can be driven by the driver 2 to simultaneously make the first rope 3 and the second rope 4 release or take in the rope synchronously, so as to avoid the first rope 3 and the second rope 4 from being too loose or too loose It can be seen that the winch system of the present invention has the advantages of better synchronization and stability.

In the hoisting system of the present utility model, specifically, one end of the first rope 3 and one end of the second rope 4 are fixed to the two ends of the drum 1 respectively, and the first rope 3 and the The second ropes 4 are respectively from the two ends of the reel 1 along the same winding direction (the winding directions of the first rope 3 and the second rope 4 in FIG. 4 are both clockwise) toward the reel 1 so that when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 is released, and the other is taken up.

It should be noted that the winding direction of the first rope 3 and the second rope 4 refers to the winding direction around the drum 1 starting from respective ends of the first rope 3 and the second rope 4 fixedly connected with the drum 1 . In addition, the winding direction and extending direction of the first rope 3 and the second rope 4 (the extending direction of the first rope 3 and the second rope 4 in FIG. The middle part) can be set as required, as long as it can satisfy when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 puts out the rope, and the other takes in the rope.

In the hoisting system of the present invention, preferably, a helically extending rope groove 7 is provided on the outer peripheral surface of the reel 1, and the first rope 3 and the second rope 4 are respectively wound around the The rope groove 7, so that the first rope 3 and the second rope 4 are respectively wound on the outer peripheral surface of the drum 1 along the rope groove 7.

In the hoisting system of the present utility model, because when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 releases the rope, and the other draws the rope, thus winding on the reel 1 The first rope 3 and the second rope 4 are correspondingly shortened and lengthened respectively, and at the same time, because the diameters of the outer peripheral surfaces of the reel 1 are equal, the amount of the first rope 3 and the second rope 4 and the amount of rope retracted The amount of rope is equal, and the total length of the first rope 3 and the second rope 4 wound on the drum 1 is always correspondingly more and less, so it is more preferred that the rope groove 7 includes alternately winding the The common part of the first rope 3 and the second rope 4 can reduce the required number of turns of the rope groove 7 for winding the first rope 3 and the second rope 4, thereby greatly reducing the axial speed of the reel 1. The size in the direction makes the structure of the winch system of the present utility model more compact.

The utility model also provides a ladder frame, as shown in Fig. 4 to Fig. 5, the ladder frame includes a basic ladder frame 8 hinged on the installation platform through a hinge shaft, and a The telescopic ladder frame 9 connected to the basic ladder frame 8 and the winch system described in the utility model, the telescopic ladder frame 9 is provided with a drive pulley block 10 for driving the telescopic ladder frame 9 to slide, the The other end of the first rope 3 goes around a pulley in the drive pulley block 10 and is connected to one end of the foundation ladder frame 8, and the other end of the second rope 4 goes around another pulley in the drive pulley block 10 Connect to the other end of the basic ladder frame 8.

The hoisting system of the present invention includes a single reel 1, a driver 2 capable of driving the forward and reverse rotation of the single reel 1, and the first rope 3 and the second rope 4 respectively wound on the outer peripheral surface of the reel 1. One end of the first rope 3 and one end of the second rope 4 are respectively fixed to the reel 1, when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 releases the rope, and the other Or take in the rope, so that the forward and reverse rotation of the reel 1 can be driven by the driver 2 to simultaneously make the first rope 3 and the second rope 4 release or take in the rope synchronously, so as to avoid the first rope 3 and the second rope 4 from being too loose or too loose It can be seen that the winch system of the present invention has the advantages of better synchronization and stability.

In the ladder frame of the present utility model, preferably, the hoisting system further includes a self-guiding wire passing wheel 5 axially movably mounted on the hinge shaft, and the central axis of the self-guiding wire passing wheel 5 It is parallel to the central axis of the reel 1, and its outer peripheral surface is formed with a groove for contacting with the second rope 4, and the second rope 4 is partially wound around the self-guiding wire wheel 5 In the groove, so that the distance between the first rope 3 and the second rope 4 is small, so that the subsequent arrangement of the first rope 3 and the second rope 4 and the pulley, at the same time, when the reel 1 rotates and the first When the second rope 4 traverses in the axial direction of the reel 1, since the second rope 4 is partially wound in the groove of the self-guiding wire passing wheel 5, the second rope 4 drives the self-guiding wire passing wheel 5 through the groove Traversing synchronously.

In the above-mentioned ladder frame, specifically, threads are formed on the outer peripheral surface of the installation shaft 6, and the self-guiding wire passing wheel 5 is provided with an installation hole for connecting with the installation shaft 6, and the peripheral surface of the installation hole Matching thread corresponding to said thread is formed on it, more specifically, the diameter of the reel 1 is D ₁ , the pitch of the rope groove 7 is P ₁ , the diameter of the self-guided wire passing wheel 5 is D ₂ , and the installation shaft 6 The pitch of the screw thread is P ₂ , since the number of rotations of the reel 1 corresponds to the amount of retraction and release of the second rope 4 and the length of the second rope 4 passing through the self-guiding pulley 5, so D ₁ ×P ₁ =D ₂ ×P ₂ , so that to make the self-guiding wire passing wheel 5 and the second rope 4 move laterally synchronously, only the diameter D ₂ of the self-guiding wire passing wheel 5 and the pitch P ₂ of the screw thread of the installation shaft 6 satisfy the above relational expression. Can.

In addition, the specific way to make the self-guiding wire passing wheel 5 and the second rope 4 traverse synchronously is not limited to the above forms, for example, the outer peripheral surface of the installation shaft 6 can be formed as a smooth surface, and the self-guiding wire passing wheel 5 can slide accordingly The ground is fitted on the installation shaft 6, because the second rope 4 is partially wound in the groove of the self-guiding wheel 5, when the second rope 4 traverses, the second rope 4 will force the self-guiding through the groove. The wire wheels 5 traverse synchronously.

In the ladder frame of the present utility model, specifically, the basic ladder frame 8 includes an installation end and a telescopic end opposite to each other and an intermediate end between the installation end and the telescopic end, and the telescopic ladder frame 9 starts from the telescopic end protrudes or shrinks from the telescopic end into the interior of the basic ladder frame 8, the ladder frame also includes a bracket 11 fixed to the installation end of the basic ladder frame 8, the winch system and the hinge shaft are all arranged on the bracket 11. More specifically, as shown in Fig. 4 and Fig. 5, the middle end of the basic ladder frame 8 is provided with two sets of reversing pulleys (the reversing pulleys include a first reversing pulley 12a and a second reversing pulley 12b), and the basic ladder frame The installation end and telescopic end of 8 are respectively provided with a first redirection pulley 13 and a second redirection pulley 14, and the other end of the first rope 3 bypasses the first redirection pulley 12a, the second redirection pulley 12a, and the second redirection pulley in turn. The pulley 12b, the first re-direction pulley 13, a pulley in the drive pulley block 10 are finally connected to the installation end of the basic ladder frame 8, and the other end of the second rope 4 is passed around the self-guiding wire pulley 5 in turn , the first reversing pulley 12a, the second reversing pulley 12b, the second re-reversing pulley 14, another pulley in the driving pulley block 10 and finally connected to the telescopic end of the basic ladder frame 8.

In addition, the utility model also provides an aerial ladder fire truck, which includes the ladder frame described in the utility model.

The hoisting system of the present invention includes a single reel 1, a driver 2 capable of driving the forward and reverse rotation of the single reel 1, and the first rope 3 and the second rope 4 respectively wound on the outer peripheral surface of the reel 1. One end of the first rope 3 and one end of the second rope 4 are respectively fixed to the reel 1, when the driver 2 drives the reel 1 to rotate, one of the first rope 3 and the second rope 4 releases the rope, and the other Or take in the rope, so that the forward and reverse rotation of the reel 1 can be driven by the driver 2 to simultaneously make the first rope 3 and the second rope 4 release or take in the rope synchronously, so as to avoid the first rope 3 and the second rope 4 from being too loose or too loose It can be seen that the winch system of the present invention has the advantages of better synchronization and stability.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. a hoisting system, it is characterized in that, this hoisting system comprises single reel (1), the actuator (2) of the forward and reverse rotation of described single reel (1) and the first rope (3) be wrapped in respectively on the outer peripheral face of described reel (1) and the second rope (4) can be driven, one end of described first rope (3) and one end of described second rope (4) are individually fixed in described reel (1), when described actuator (2) drives described reel (1) to rotate, one in described first rope (3) and described second rope (4) puts rope, and another one rope closing.

2. hoisting system according to claim 1, it is characterized in that, one end of described first rope (3) and one end of described second rope (4) are individually fixed in the two ends of described reel (1), and described first rope (3) is wound around from the two ends of described reel (1) along identical winding direction towards the middle part of described reel (1) respectively with described second rope (4).

3. hoisting system according to claim 2, it is characterized in that, the outer peripheral face of described reel (1) is provided with the rope groove (7) of a spiral extension, described first rope (3) and described second rope (4) are wound in described rope groove (7) respectively.

4. hoisting system according to claim 3, is characterized in that, described rope groove (7) comprises the common sparing being alternately wound around described first rope (3) and described second rope (4).

5. hoisting system according to claim 1, is characterized in that, described actuator (2) is HM Hydraulic Motor.

6. a ladder, this ladder comprises and is hinged on the basic ladder (8) on erecting stage by jointed shaft and is connected to the flexible ladder (9) on described basic ladder (8) slidably along the bearing of trend of described basic ladder (8), described flexible ladder (9) is provided with the drive pulley group (10) for driving described flexible ladder (9) to slide, it is characterized in that, described ladder also comprises hoisting system as claimed in any of claims 1 to 5, the other end pulley walked around in described drive pulley group (10) of described first rope (3) is connected to one end of described basic ladder (8), the other end another pulley walked around in described drive pulley group (10) of described second rope (4) is connected to the other end of described basic ladder (8).

7. ladder according to claim 6, it is characterized in that, described hoisting system also comprises the self-steering wire-crossing wheel (5) be axially movably arranged on described jointed shaft, the central axis of described self-steering wire-crossing wheel (5) and the centerline axis parallel of described reel (1), and its outer peripheral face is formed for contacting with described second rope (4) groove coordinated, and described second rope (4) is partly wrapped in the groove of described self-steering wire-crossing wheel (5).

8. ladder according to claim 7, it is characterized in that, the outer peripheral face of described installation shaft (6) is formed with screw thread, described self-steering wire-crossing wheel (5) is provided with the mounting hole for being connected with described installation shaft (6), and the periphery of this mounting hole is formed with the matching thread corresponding to described screw thread.

9. ladder according to claim 7, it is characterized in that, described basic ladder (8) comprises installation end and telescopic end, described flexible ladder (9) is stretched out from described telescopic end or is shunk from described telescopic end and enters described basic ladder (8) inside, described ladder also comprises the bracket (11) of the installation end being fixed on described basic ladder (8), and described hoisting system and described jointed shaft are all arranged on described bracket (11).

10. a fire fighting turnable ladder, is characterized in that, described fire fighting turnable ladder comprises according to the ladder in claim 6-9 described in any one.