CN215479298U - Movable foldable hoisting device - Google Patents

Abstract

The utility model relates to hoisting machinery, and discloses a movable foldable hoisting device which comprises a movable support, a vertical telescopic arm, a horizontal telescopic arm, a hoisting device and a hoisting transmission mechanism, wherein the movable support is provided with a moving device, the bottom of the vertical telescopic arm is movably connected with one end of the movable support, a first telescopic driving rod is connected between the vertical telescopic arm and the movable support, one end of the horizontal telescopic arm is movably connected with the top of the vertical telescopic arm, a second telescopic driving rod is connected between the horizontal telescopic arm and the vertical telescopic arm, and the hoisting device is fixed on the movable support and connected with the hoisting transmission device so as to hoist a heavy object through the hoisting transmission device. The movable foldable hoisting device can be applied to narrow space, and can be used for hoisting heavy objects conveniently and flexibly.

Description

Movable foldable hoisting device

Technical Field

The utility model relates to hoisting machinery, in particular to a movable and foldable hoisting device.

Background

During the production and manufacturing process of engineering machinery, automobiles and the like, or the repair and maintenance process of production equipment, some heavy equipment or devices, such as high-power motors, fans, heat exchangers and the like, need to be disassembled sometimes. Due to different field conditions, a hoisting support structure for hanging the hoist is sometimes lacked on the field. Due to the limitation of field layout and space, the movable portal frame can not be placed frequently, so that part of equipment cannot be disassembled and replaced after being damaged, or the disassembly and replacement are difficult, and the normal production is affected.

At the moment, the common solution is that an I-shaped steel is additionally arranged on a steel structure above the equipment to be replaced, and a hand hoist is hung on the I-shaped steel for hoisting. The hoisting method has the following defects: 1. the I-shaped steel needs to be installed in advance during the construction of a steel structure of a factory building and has no disassembly and assembly property; 2. the problem that I-shaped steel sections are arranged above each device in advance cannot be solved; 3. if the I-shaped steel is arranged above each piece of equipment in advance, the I-shaped steel cannot be used due to the fact that other equipment interference may exist between the I-shaped steel and the equipment needing to be lifted due to the fact that field equipment is multiple.

The detachable movable portal frame can be built on the site at the position of equipment to be replaced and used as a supporting structure for lifting the manual hoist. However, after the field device is installed, the vacant space is limited, and the requirement for placing the portal frame cannot be met frequently.

And manual hoisting can be carried out by using a movable simple hoisting device. However, in the existing simple hoisting device, in order to ensure the hoisting height and hoisting distance of the heavy object, the upright column and the boom are usually arranged longer, so that the hoisting device occupies a larger space and is inconvenient to store and transport, and the hoisting and moving of the heavy object are influenced. The existing manual hoisting device which does not need external power needs to keep the heavy object in a hoisting state through manpower in the process of hoisting the heavy object, and the hoisting is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a movable and foldable hoisting device which can be applied to narrow space and can be used for hoisting heavy objects conveniently and flexibly.

In order to solve the technical problems, the utility model provides a movable foldable hoisting device which comprises a movable support, a vertical telescopic arm, a horizontal telescopic arm, a hoisting device and a hoisting transmission mechanism, wherein the movable support is provided with a moving device, the bottom of the vertical telescopic arm is movably connected with one end of the movable support, a first telescopic driving rod is further connected between the vertical telescopic arm and the movable support, one end of the horizontal telescopic arm is movably connected with the top of the vertical telescopic arm, a second telescopic driving rod is further connected between the horizontal telescopic arm and the vertical telescopic arm, and the hoisting device is fixed on the movable support and is connected with the hoisting transmission mechanism so as to hoist a heavy object through the hoisting transmission mechanism. .

Preferably, the vertical telescopic arm comprises a vertical basic arm and a vertical movable arm, the bottom end of the vertical basic arm is movably connected with the movable support, the first telescopic driving rod is connected to the middle of the vertical basic arm, a vertical arm matching structure is arranged on the vertical basic arm, the vertical movable arm is mounted on the vertical basic arm through the vertical arm matching structure and can move relative to the vertical basic arm, and the top of the vertical movable arm is movably connected with the horizontal telescopic arm. In the preferred technical scheme, the vertical telescopic arm can be stretched and retracted through the vertical movable arm relative to the vertical basic arm, and the vertical telescopic arm is convenient to stretch and retract.

Further preferably, a vertical arm positioning device is arranged between the lower part of the vertical movable arm and the vertical basic arm, and the positioning between the vertical movable arm and the vertical basic arm is formed by the vertical arm positioning device. Through this preferred technical scheme, can fix the specific position on vertical basic arm through vertical arm positioner with vertical digging arm, form the different flexible degree of vertical flexible arm. The length of the vertical telescopic arm is adjusted through the vertical arm positioning device, the adjusting structure is simpler, and the adjustment is also more convenient and reliable.

Preferably, the horizontal telescopic arm comprises a horizontal basic arm and a horizontal movable arm, one end of the horizontal basic arm is movably connected with the top end of the vertical movable arm, the second telescopic driving rod is connected between the vertical basic arm and the horizontal basic arm, a horizontal matching structure is arranged on the horizontal basic arm, and the horizontal movable arm is mounted on the horizontal basic arm through the horizontal arm matching structure and can move relative to the horizontal basic arm. In the preferred technical scheme, the stretching of the horizontal telescopic arm can be realized through the movement of the horizontal movable arm relative to the horizontal basic arm, and the stretching of the horizontal telescopic arm is more convenient.

Further preferably, a horizontal arm positioning device is arranged between the horizontal movable arm and the horizontal basic arm, and the horizontal arm positioning device is used for positioning the horizontal movable arm and the horizontal basic arm. Through this preferred technical scheme, can fix the specific position on horizontal basic arm through horizontal arm positioner with horizontal movable arm, form the different flexible degree of horizontal telescopic boom, that is the different length of horizontal telescopic boom. The length of the horizontal telescopic arm is adjusted through the horizontal arm positioning device, the adjusting structure is simpler, and the adjustment is also more convenient and reliable.

Preferably, the hoisting transmission mechanism comprises a hoisting rope, guide wheels and hoisting pulleys, the guide wheels are multiple and are respectively arranged on the vertical telescopic arm and the horizontal telescopic arm, the horizontal telescopic arm is provided with a movable support, the movable support is suitable for being fixed at different positions of the horizontal telescopic arm, the hoisting pulleys are arranged on the movable support, and the hoisting rope penetrates through the hoisting pulleys and the guide wheels to be connected with the hoisting device. Through this preferred technical scheme, the one end of lifting rope is connected with the lifting device, and the other end passes the leading wheel and lifts by crane the pulley and fix on waiting to lift by crane the heavy object, and the lifting device pulls the lifting rope, just can conveniently lift by crane the heavy object. The lifting position of the heavy object can be conveniently adjusted by adjusting the position of the movable support on the horizontal telescopic arm.

Preferably, the hoist is a ratchet type tensioner. In this preferred technical scheme, use ratchet formula strainer can easily through the manpower pulling lifting rope, carry out the heavy object and lift by crane. And the weight can be conveniently suspended at different positions in the air.

Preferably, a counterweight structure is further arranged at one end, far away from the vertical telescopic arm, of the moving support. In this preferred technical scheme, the setting of counter weight structure can resist the moment that the heavy object formed of lifting by crane, is favorable to guaranteeing heavy object lift by crane in-process hoist device's balance.

Further preferably, the counterweight structure includes a plurality of counterweight blocks and a counterweight guide rod, the counterweight guide rod is fixed on the movable support, the counterweight blocks are provided with a plurality of guide holes, and each counterweight block is provided with a guide hole and can be sleeved on the counterweight guide rod through the guide hole. Through this preferred technical scheme, can conveniently establish the balancing weight of different weight on the counter weight guide bar cover, form the different counter weights that suit with the weight of the heavy object of different lifts by crane.

Preferably, the first telescopic driving rod and the second telescopic driving rod are hydraulic jacks. In this preferred technical scheme, can be under the condition that does not need outside corollary device through hydraulic jack, the flexible of the flexible actuating lever of manual adjustment to the folding and the support degree of vertical flexible arm of adjustment and horizontal flexible arm.

Preferably, one end of the movable support is provided with a push-pull handle, and the push-pull handle is arranged at one end where the counterweight structure is located. In the preferred technical scheme, the hoisting device can be conveniently moved by pushing and pulling the handle, so that the moving convenience is improved.

Through the technical scheme, the movable foldable hoisting device has the advantages that the vertical telescopic arm and the horizontal telescopic arm are arranged on the movable support, and the movable device is arranged on the movable support, so that the hoisting device can be conveniently moved. Due to the use of the vertical telescopic arm and the horizontal telescopic arm, the hoisting device can form hoisting spaces with different hoisting heights and different hoisting distances. Swing joint between vertical flexible arm and the movable support, between flexible arm of level and the vertical flexible arm to and the setting of the flexible actuating lever of first flexible actuating lever and second, make things convenient for the folding of vertical flexible arm and the flexible arm of level on the one hand, on the other hand can support vertical flexible arm and the flexible arm of level in the position of difference, conveniently hoist and mount the heavy object in the narrow and small space of difference.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic structural view of one embodiment of the mobile collapsible crane apparatus of the present invention;

FIG. 2 is an exploded view of a counterweight according to one embodiment of the mobile collapsible crane of the present invention;

figure 3 is a schematic view of one embodiment of the mobile collapsible crane of the present invention in a collapsed state.

1 moving bracket 11 walking wheel

12 push-pull handle 2 vertical telescopic arm

21 vertical base arm 211 vertical arm pin hole

22 vertical movable arm 3 horizontal telescopic arm

31 horizontal basic arm 311 horizontal arm pin hole

32 horizontal movable arm 4 lifting device

41 rocker 51 first telescopic driving rod

52 second telescopic drive rod 61 lifting rope

62 leading wheel 63 hoisting pulley

64 move and support 71 clump weight

72 counterweight guide rod

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of said features.

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the utility model.

One embodiment of the movable and foldable hoisting device of the utility model, as shown in fig. 1 to 3, comprises a movable support 1, a vertical telescopic arm 2, a horizontal telescopic arm 3, a hoisting device 4 and a hoisting transmission mechanism. The movable support 1 is a movable mounting support, and the vertical telescopic arm 2, the horizontal telescopic arm 3, the lifting device 4 and the lifting transmission mechanism are directly or indirectly mounted on the movable support 1. The mobile support 1 is generally a frame structure made of metal section bar, and the shape of the mobile support 1 can be rectangle, triangle, equilateral trapezoid, etc. with various possible shapes. A moving device is installed below the moving bracket 1 and can move on the ground through the moving device. Generally, the moving device can use a walking wheel 11 as shown in fig. 1 to 3, and the walking wheel 11 can also be provided with a brake device. Through the travelling wheels 11, the hoisting device can be moved to various required places without position limitation to hoist heavy objects. Due to the brake device, the position of the movable support 1 can be fixed during hoisting operation, and the hoisting safety is ensured. Of course, other possible mechanical structures such as crawler-type traveling devices may be used as the moving device. The vertical telescopic arm 2 is a support arm with a telescopic length, and the vertical telescopic arm 2 is usually made of a metal material and can be telescopic in various possible ways. The lower extreme of vertical flexible arm 2 and the one end swing joint of moving movable support 1, specifically, can be connected through articulated mode between the lower extreme of vertical flexible arm 2 and the moving movable support 1, also can be connected through other possible modes such as ball-and-socket joint. Still be connected with first flexible actuating lever 51 between vertical flexible arm 2 and movable support 1, first flexible actuating lever 51 can be hydraulic telescoping rod, also can be pneumatic telescopic link, or various length drive arrangement that can stretch out and draw back such as electronic flexible push rod. When the length of the first telescopic driving rod 51 is extended, the vertical telescopic arm 2 can be pushed to rotate relative to the movable support 1, so that the vertical telescopic arm 2 is closer to a vertical state, and the maximum lifting height of the lifting device is increased; when the length of the first telescopic driving rod 51 is shortened, the vertical telescopic arm 2 can be driven to rotate relative to the moving support 1, so that the vertical telescopic arm 2 is folded towards the moving support 1, and the hoisting device can hoist heavy objects in a lower hoisting space or is convenient to store and transport. The horizontal telescopic arm 3 is a suspension arm which can be extended and contracted in length, and the horizontal telescopic arm 3 is also made of a metal material generally and can be extended and contracted in various possible ways. One end of the horizontal telescopic arm 3 and the upper part of the vertical telescopic arm 2 can be connected with each other in a hinged mode, a ball-and-socket connection mode and the like, so that the horizontal telescopic arm 3 can rotate relative to the vertical telescopic arm 2. A second telescopic drive rod 52 is also connected between the horizontal telescopic arm 3 and the vertical telescopic arm 2. The second telescopic driving rod 52 may be a hydraulic telescopic rod, a pneumatic telescopic rod, or a driving device capable of being extended and retracted in various lengths, such as an electric telescopic push rod. Through the extension and contraction of the second telescopic driving rod 52, the horizontal telescopic arm 3 is pushed to rotate relative to the vertical telescopic arm 2, so that the horizontal telescopic arm 3 is in a position close to the horizontal position in a working state, and the lifting and the moving of heavy objects are facilitated. By shortening the length of the second telescopic driving rod 52, the horizontal telescopic arm 3 can be folded towards the vertical telescopic arm 2, so that the space occupation of the hoisting device is reduced, and the hoisting device is convenient to transport and store. The first telescopic driving rod 51 and the movable support 1 and the vertical telescopic arm 2, and the second telescopic driving rod 52 and the vertical telescopic arm 2 and the horizontal telescopic arm 3 can be movably connected in the above manner. The hoist 4 is fixed to the mobile carriage 1, typically between the counterweight structure and the first telescopic drive rod 51. The lifting device 4 is used for providing power required for lifting heavy objects, and the lifting device 4 can be an electric power device, a hydraulic power device, a mechanical power device or the like. One end of the hoisting transmission device is connected with the hoisting device 4, the other end of the hoisting transmission device is fixed on a heavy object to be hoisted, and the hoisting transmission device can convert the power output by the hoisting device 4 into lifting force for pulling the heavy object to rise, so that the heavy object is suspended in the air. At this time, the moving bracket 1 is moved, and the lifted heavy object can be transferred to a desired position.

In some embodiments of the mobile collapsible lifting device of the utility model, as shown in fig. 1 to 3, the vertical telescopic arm 2 comprises a vertical basic arm 21 and a vertical mobile arm 22. The vertical base arm 21 and the vertical movable arm 22 are typically made of a metal material, and the vertical base arm 21 is provided with a vertical arm engagement structure. The vertical arm engagement structure may be a cavity structure provided inside the vertical base arm 21 and having an open end, and the vertical movable arm 22 has an end mounted in the cavity structure of the vertical base arm 21 and movable therein to perform the telescopic action of the vertical telescopic arm 2. The vertical arm matching structure may also be a sliding groove arranged on the side surface of the vertical basic arm 21, and the vertical movable arm 22 is wholly or partially clamped in the sliding groove of the vertical basic arm 21 and can slide in the sliding groove to form the telescopic action of the vertical telescopic arm 2. Between the vertical arm engagement structure of the vertical base arm 21 and the vertically movable arm 22, there may also be provided a telescopic driving means, such as a hydraulic cylinder, an electric push rod, or the like, to drive the sliding of the vertically movable arm 22 relative to the vertical base arm 21. The relative position between the vertically movable arm 22 and the vertically basic arm 21 can also be adjusted manually by manual means. The vertical movable arm 22 can also be provided with a plurality of vertical movable arms 22 which are movably connected with each other, wherein one vertical movable arm 22 is movably connected with the vertical basic arm 21 to form a multi-section telescopic structure. The bottom end of the vertical basic arm 21 is movably connected with the movable bracket 1, and the first telescopic driving rod 51 is movably connected with the middle part of the vertical basic arm 21 so as to better drive the vertical basic arm 21 to rotate relative to the movable bracket 1. The top of the vertical movable arm 22 is movably connected with the horizontal telescopic arm 3, so that the horizontal telescopic arm 3 can rotate relative to the vertical movable arm 22.

As a specific embodiment of the movable and foldable lifting device of the present invention, as shown in fig. 1 to 3, between the vertical basic arm 21 and the vertical moving arm 22, a vertical arm positioning device is further provided to fix the vertical moving arm 22 at a specific position on the vertical basic arm 21 to form a specific telescopic length of the vertical telescopic arm 2. The vertical arm positioning means may be a vertical positioning hole provided at a lower portion of the vertical moving arm 22, and a plurality of through vertical arm pin holes 211 provided at different positions on an upper portion of the vertical base arm 21. The vertically positioned holes in the lower portion of the vertically movable arm 22 can be opposed to different vertical arm pin holes 211 when the vertically movable arm 22 is moved relative to the vertical base arm 21. By inserting a vertical positioning pin into the vertical positioning hole and a corresponding vertical arm pin hole 211, the vertical movable arm 22 can be fixed at a specific position on the vertical base arm 21, thereby forming a specific telescopic state of the vertical telescopic arm 2. The vertical arm positioning means may also be other positioning means such as locking bolts, pawls and ratchets provided between the vertical base arm 21 and the vertical movable arm 22.

In some embodiments of the mobile collapsible lifting device of the utility model, as shown in fig. 1 to 3, the horizontal telescopic arm 3 comprises a horizontal basic arm 31 and a horizontal movable arm 32. The horizontal base arm 31 and the horizontal movable arm 32 are generally made of a metal material, and the horizontal base arm 31 is provided with a horizontal arm engagement structure. The horizontal arm engagement structure may be a cavity structure provided inside the horizontal base arm 31 and having an open end, and the horizontal movable arm 32 has an end installed in the cavity structure of the horizontal base arm 31 and capable of sliding in the cavity structure to perform the telescopic action of the horizontal telescopic arm 3. The horizontal arm engagement structure may be a slide groove provided on the side surface of the horizontal base arm 31, and the horizontal movable arm 32 is entirely or partially engaged with and slidable in the slide groove of the horizontal base arm 31 to perform the telescopic operation of the horizontal telescopic arm 3. Similarly, a telescopic driving device, such as a hydraulic cylinder, an electric push rod, etc., may be provided between the horizontal arm engagement structure on the horizontal base arm 31 and the horizontally movable arm 32 to drive the movement of the horizontally movable arm 32 relative to the horizontal base arm 31. The relative position between the horizontally movable arm 32 and the horizontally basic arm 31 can likewise be adjusted manually by manual means. The horizontal movable arms 32 can also be provided with a plurality of horizontal movable arms 32, the plurality of horizontal movable arms 32 can be movably connected with each other to form a telescopic structure among the plurality of horizontal movable arms 32, and one horizontal movable arm 32 can be movably connected on the horizontal basic arm 31 to form a multi-joint sleeving structure. One end of the horizontal base arm 31 is movably connected to the top end of the vertically movable arm 22 so that the horizontal base arm 31 can rotate relative to the vertically movable arm 22. The second telescopic driving rod 52 is movably connected between the vertical basic arm 21 and the horizontal basic arm 31, and the included angle between the horizontal basic arm 31 and the vertical movable arm 22 can be adjusted through the telescopic operation of the second telescopic driving rod 52, so that the horizontal basic arm 31 is adjusted to be in a substantially horizontal position.

As a specific embodiment of the movable and foldable lifting device of the present invention, as shown in fig. 1 to 3, between the horizontal basic arm 31 and the horizontal movable arm 32, a horizontal arm positioning device is provided. The horizontal arm positioning means fixes the horizontal movable arm 32 at a specific position on the horizontal base arm 31 to form a specific telescopic length of the horizontal telescopic arm 3. The horizontal arm positioning means may be a horizontal positioning hole provided at one end of the horizontal movable arm 32 connected to the horizontal base arm 31, and a plurality of through horizontal arm pin holes 311 horizontally provided at different positions on the horizontal base arm 31. When the horizontally movable arm 32 is moved to different positions relative to the horizontally base arm 31, the positions of the horizontally positioned holes on the horizontally movable arm 32 can correspond to the positions of the different horizontal arm pin holes 311. By inserting the horizontal positioning pin into the horizontal positioning hole and a corresponding horizontal arm pin hole 311, the horizontal movable arm 32 can be fixed at a specific position in the horizontal base arm 31, and a specific telescopic state of the horizontal telescopic arm 3 can be achieved. Similarly, the horizontal arm positioning device may be other positioning devices such as a lock bolt, a pawl, and a ratchet provided between the horizontal base arm 31 and the horizontal moving arm 32. The form of the horizontal arm positioning device may be the same as or different from the vertical arm positioning device.

In some embodiments of the mobile collapsible lifting device of the present invention, as shown in fig. 1 and 2, the lifting transmission comprises a lifting rope 61, a guide wheel 62 and a lifting pulley. The lifting rope 61 may be any rope that can sufficiently bear the weight of a heavy object to be lifted, such as a steel wire rope, a nylon rope, or the like. The guide wheels 62 can be provided in plurality, and a plurality of guide wheels 62 are respectively arranged on the vertical telescopic arm 2 and the horizontal telescopic arm 3 to change or limit the position of the running direction of the lifting rope 61. The horizontal telescopic arm 3 is provided with a movable support 64, the movable support 64 is usually made of metal material, and is processed into a shape that can be installed on the horizontal telescopic arm 3 and can move along the length direction of the horizontal telescopic arm 3, for example, the horizontal telescopic arm 3 is composed of a horizontal basic arm 31 and a horizontal movable arm 32, the horizontal movable arm 32 is made of i-steel, the movable support 64 is made of C-shaped steel, and the movable support 64 is opened upwards and sleeved on the lower part of the horizontal movable arm 32. The mobile support 64 may also be provided with fixing means, such as fixing screws or the like, or with traction means, to fix or constrain the mobile support in different positions on the horizontal telescopic arm 3. The hoisting pulley 63 may be a fixed pulley or a general guide pulley. The lifting pulley 63 is fixed to the lower portion of the moving support 64. One end of the lifting rope 61 is fixed and partially surrounds the lifting device 4, and the other end passes through the guide wheel 62 and the lifting pulley 63 and is fixed on the weight to be lifted. The hoist 4 is used to pull the hoisting rope 61, and the heavy object can be suspended. The guide wheels 62 are able to conduct the traction force and to define the run of the hoisting rope 61, preventing the hoisting rope 61 from interfering with other structures of the hoisting device. The position of the lifting pulley 63 determines the direction in which the lifting rope 61 applies a lifting force to the heavy object, and forms the lifting position of the heavy object. Adjusting the position of the mobile support 64 on the horizontal telescopic arm 3 also enables moving the weight, hanging it off, or placing it in a different position. When the heavy object is lifted, the heavy object suspension part of the lifting rope 61 can be manually pulled, or the movable support 64 can be moved to adjust and maintain the position of the heavy object. The inner side of the movable support 64 can also be provided with a roller, when a heavy object is lifted to a certain height, the position of the movable support 64 on the horizontal telescopic arm 3 can be manually dragged by using a traction device, so that the position of the heavy object can be adjusted, and the heavy object can be more conveniently lifted in a narrow space.

In some embodiments of the mobile collapsible lifting device of the utility model, as shown in fig. 1-3, the hoist 4 is a ratchet tensioner. Pulling the rocker 41 on the ratchet type strainer can conveniently lift the heavy object through manpower, the operation is easier, the dependence of the lifting device on external power is reduced, and the applicability of the lifting device is improved. The ratchet type tensioner is used, a heavy object can be suspended in the air conveniently, the control of the lifting process of the heavy object is facilitated, and the operation is more convenient and faster.

In some embodiments of the movable and foldable lifting device of the present invention, as shown in fig. 1 to 3, a counterweight structure is further provided on the end of the moving bracket 1 opposite to the joint of the moving bracket 1 and the vertical telescopic arm 2. The counterweight structure can be various structures with larger weight arranged on the movable support 1, and the counterweight structure can be fixed on the movable support 1 or can be detachably arranged on the movable support 1. The counterweight structure helps to ensure the balance of the movable support 1 in the process of lifting the heavy object, and prevents the movable support 1 from overturning under the action of the heavy object.

As a specific embodiment of the movable and foldable lifting device of the present invention, as shown in fig. 1 to 3, the counterweight structure is a counterweight block 71 and a counterweight guide rod 72. Two counterweight guide rods 72 which are parallel to each other are vertically fixed at the adjacent positions of the end part of the movable support 1, the counterweight blocks 71 are multiple, two guide holes corresponding to the counterweight guide rods 72 are formed in each counterweight block 71, the counterweight blocks 71 can be sleeved on the two counterweight guide rods 72 through the guide holes in a stacking mode, the weight of one end, away from the vertical telescopic arm 2, of the movable support 1 is increased, balance in the hoisting process of the hoisting device is kept, and the hoisting device is prevented from overturning. Different numbers of counter weights 71 can be loaded on the counter weight guide rod 72 according to the weight of the lifted heavy object. In the transfer process of the lifting device, the counterweight 71 can be separately transferred from other structures, so that the transfer convenience is improved. The weight 71 may be a square iron block, but may also be made of other shapes, such as a circle, an ellipse, etc., or made of other materials, such as copper material or concrete, etc.

In some embodiments of the mobile collapsible lifting device of the present invention, as shown in fig. 1 to 3, the first and second telescopic driving rods 51 and 52 are hydraulic jacks. The hydraulic jack can use a commercially available long-stroke hydraulic jack, and the long stroke can ensure that the vertical telescopic arm 2 and the horizontal telescopic arm 3 have enough activity. The hydraulic jack is large in supporting force, can stretch out and draw back by hydraulic oil carried by the hydraulic jack, does not need external hydraulic oil supply, and is more convenient to use. A triangle can be formed by the first telescopic driving rod 51, the vertical telescopic arm 2 and the movable support 1 in the vertical direction, and the stress balance of the vertical telescopic arm 2 is realized by utilizing the stability of the triangle; similarly, a triangle is formed by the second telescopic driving rod 52, the horizontal telescopic arm 3 and the vertical telescopic arm 2 in the horizontal direction, so that the stress balance of the horizontal telescopic arm 3 is realized.

In some embodiments of the mobile collapsible lifting device of the utility model, as shown in fig. 1-3, one end of the mobile bracket 1 is provided with a push-pull handle 12. A push-pull handle 12 is provided at the end where the counterweight structure is located to move the lifting device in a region away from the area where the heavy object is lifted. When the hoisting device needs to be moved or transferred, the brake device on the walking wheel 11 can be loosened, and the pushing and pulling force is exerted manually through the pushing and pulling handle 12 to move or transfer the hoisting device.

In the movable foldable hoisting device, detachable connection structures can be adopted between the vertical telescopic arm 2 and the movable support 1, between the first telescopic driving rod 51 and the vertical telescopic arm 2, between the vertical telescopic arm 2 and the horizontal telescopic arm 3, between the vertical telescopic arm 2 and the second telescopic driving rod 52, between the second telescopic driving rod 52 and the horizontal telescopic arm 3, between the vertical basic arm 21 and the vertical movable arm 22, and between the horizontal basic arm 31 and the horizontal movable arm 32, so that the movable foldable hoisting device can be conveniently disassembled and assembled when needed, the transportation weight is reduced when in use, and the movable foldable hoisting device is more flexible to use.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, numerous simple modifications can be made to the technical solution of the utility model, including combinations of the specific features in any suitable way, and the utility model will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (11)

1. A movable and foldable hoisting device is characterized by comprising a movable bracket (1), a vertical telescopic arm (2), a horizontal telescopic arm (3), a hoisting device (4) and a hoisting transmission mechanism, the movable support (1) is provided with a moving device, the bottom of the vertical telescopic arm (2) is movably connected with one end of the movable support (1), a first telescopic driving rod (51) is connected between the vertical telescopic arm (2) and the movable bracket (1), one end of the horizontal telescopic arm (3) is movably connected with the top of the vertical telescopic arm (2), a second telescopic driving rod (52) is connected between the horizontal telescopic arm (3) and the vertical telescopic arm (2), the lifter (4) is fixed on the movable bracket (1), and is connected with the hoisting transmission device so as to be capable of hoisting heavy objects through the hoisting transmission device.

2. The movable and foldable lifting device as recited in claim 1, characterized in that the vertically telescopic boom (2) comprises a vertical basic boom (21) and a vertical movable boom (22), the bottom end of the vertical basic boom (21) is movably connected with the movable bracket (1), the first telescopic driving rod (51) is connected with the middle part of the vertical basic boom (21), a vertical boom matching structure is disposed on the vertical basic boom (21), the vertical movable boom (22) is mounted on the vertical basic boom (21) through the vertical boom matching structure and can move relative to the vertical basic boom (21), and the top part of the vertical movable boom (22) is movably connected with the horizontal telescopic boom (3).

3. Mobile collapsible lifting device according to claim 2, characterised in that a vertical arm positioning means is arranged between the lower part of the vertically movable arm (22) and the vertical basic arm (21) and by means of which positioning between the vertically movable arm (22) and the vertical basic arm (21) is established.

4. The mobile collapsible crane arrangement as claimed in claim 2, characterised in that the horizontally extending and retracting boom (3) comprises a horizontal basic boom (31) and a horizontally movable boom (32), one end of the horizontal basic boom (31) is movably connected to the top end of the vertically movable boom (22), the second telescopic driving rod (52) is connected between the vertical basic boom (21) and the horizontal basic boom (31), the horizontal basic boom (31) is provided with a horizontal mating structure, and the horizontally movable boom (32) is mounted on the horizontal basic boom (31) by the horizontal boom mating structure and can move relative to the horizontal basic boom (31).

5. Mobile collapsible lifting device according to claim 4, characterised in that between the horizontally active arm (32) and the horizontally basic arm (31) horizontal arm positioning means are arranged, and that the positioning between the horizontally active arm (32) and the horizontally basic arm (31) is established by means of the horizontal arm positioning means.

6. The movable foldable hoisting device according to claim 1, wherein the hoisting transmission mechanism comprises a plurality of hoisting ropes (61), guide wheels (62) and hoisting pulleys (63), the guide wheels (62) are respectively arranged on the vertical telescopic arm (2) and the horizontal telescopic arm (3), the horizontal telescopic arm (3) is provided with a movable support (64), the movable supports (64) are suitable for being fixed at different positions of the horizontal telescopic arm (3), the hoisting pulleys (63) are arranged on the movable supports (64), and the hoisting ropes (61) pass through the hoisting pulleys (63) and the guide wheels (62) to be connected with the hoisting device (4).

7. The movable collapsible lifting device according to any of claims 1-6, characterized in that the crane (4) is a ratchet tensioner.

8. The movable and collapsible lifting device as claimed in any of claims 1 to 6, characterised in that the end of the mobile carriage (1) remote from the vertical telescopic boom (2) is further provided with a counterweight structure.

9. The movable foldable hoisting device according to claim 8, wherein the counterweight structure comprises a counterweight block (71) and a plurality of counterweight guide rods (72), the counterweight guide rods (72) are fixed on the movable support (1), each counterweight block (71) is provided with a guide hole, and the counterweight guide rods (72) can be sleeved with the guide holes.

10. The movable collapsible lifting device as recited in any of claims 1-6, characterised in that the first (51) and second (52) telescopic driving rods are hydraulic jacks.

11. Mobile collapsible lifting device according to any of claims 1-6, characterised in that the mobile bracket (1) is provided with a push-pull handle (12) at one end, which push-pull handle (12) is provided at the end where the counterweight structure is located.

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