Mobile hoisting equipment with self-adaptive adjustment function

Abstract

The utility model relates to the technical field of hoisting supporting equipment, and discloses self-adaptive adjusting movable hoisting equipment which comprises a main body framework and a first sealing cylinder in the main body framework, the first sealing cylinder is movably mounted in the main body framework, a second sealing cylinder is slidably mounted in the first sealing cylinder, and the second sealing cylinder is movably mounted in the main body framework. A connecting tail end is arranged at one end of the first sealing cylinder, and the included angle between the connecting tail end and the first sealing cylinder is 120 degrees. Extension power of the third sealing cylinder is used as traction force for outward sliding of the counterweight end, and the third sealing cylinder and the counterweight end extend synchronously, so that a central supporting point of the first sealing cylinder and the connecting tail end can be adjusted to be always in a gravity balance position of the first sealing cylinder and the connecting tail end, and the first sealing cylinder and the connecting tail end are always in a balance state; when the device is used for hoisting and the large arm is prolonged, the influence of the self weight on hoisting is reduced, so that the hoisting stability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting support equipment, in particular to a mobile lifting device with adaptive adjustment. Background Technique

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. Also known as a gantry crane, overhead crane, or hoist, the main features of a tire crane are: its driving cab and lifting control cab are combined into one, and it is evolved from a crawler crane. The crawler and walking support parts of the traveling mechanism are changed into a chassis with tires, overcoming the disadvantage of the crawler plate of the crawler crane damaging the road surface. It belongs to a material handling machine.

[0003] However, for the boom of the existing crane, generally, the longer the boom extends, the smaller its lifting capacity. This is because the extension of the boom will change the mechanical structure of the crane, making the crane need to overcome a greater moment when lifting heavy objects. And usually, the working mode of lifting heavy objects at the end for handling leads to excessive pressure at the front end of the boom more easily during lifting, increasing the support strength of the driving components accordingly, and lacking corresponding counterweight blocks. Content of the Utility Model

[0004] The utility model provides a mobile lifting device with adaptive adjustment, which has the beneficial effect of automatically adjusting the counterweight, and solves the problems mentioned in the above background technique that for the boom of the crane, generally, the longer it extends outward, the greater the downward pressure it receives, and the working mode of usually lifting heavy objects at the end for handling leads to excessive pressure at the front end of the boom more easily during lifting and lacking a corresponding counterweight structure.

[0005] The utility model provides the following technical solution: A mobile lifting device with adaptive adjustment, including a main framework and a first sealed cylinder inside the main framework. The first sealed cylinder is movably installed inside the main framework, and a second sealed cylinder is slidably installed inside the first sealed cylinder;

[0006] One end of the first sealed cylinder is provided with a connecting tail end, the included angle between the connecting tail end and the first sealed cylinder is 120 degrees. A first extension end is slidably installed inside the connecting tail end, a second extension end is slidably installed inside the first extension end, and a counterweight end is provided at one end of the second extension end;

[0007] A steel cable is fixedly installed at one end of the inner wall of the second sealed cylinder, and a first guide wheel located on the inner wall of the connecting tail end is installed inside the second extension end.

[0008] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: an inner groove is provided inside the second extension end, and the first guide wheel is rotatably installed inside the inner groove;

[0009] On both sides of the inner wall of the connection tail end, there are connection cross - bars, and one end of each connection cross - bar is rotatably connected to both sides of the first guide wheel;

[0010] Inside the second sealing cylinder, a spring is further installed. A top plate is provided at the top end of the steel cable, and the spring is used to provide elastic tension to the steel cable.

[0011] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: inside the first sealing cylinder, a second guide wheel is further installed at one end of the connection tail end. The steel cable passes through the inside of the first sealing cylinder, passes along the bottom side of the second guide wheel, extends to the outer surface of the first guide wheel, winds around it for one week, and is fixedly installed at the lower end inside the second extension end.

[0012] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: reinforcing ribs are provided on the upper surface of the first sealing cylinder. The reinforcing ribs are used to increase the connection strength between the first sealing cylinder and the connection tail end, and a hydraulic rod is installed on one side of the main body framework.

[0013] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: a third sealing cylinder is slidably installed inside the second sealing cylinder.

[0014] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: a cavity is provided between the inside of the first sealing cylinder and the second sealing cylinder, and the cavity is the first pressure chamber;

[0015] A cavity is also provided between the second sealing cylinder and the third sealing cylinder, and the cavity is the second pressure chamber.

[0016] As an alternative solution of the self - adaptive adjustable mobile hoisting device of the present utility model, wherein: pistons are fixedly installed at the bottom ends of the second sealing cylinder and the third sealing cylinder respectively. The pistons are used to provide the sealing effect between the first pressure chamber and the second pressure chamber;

[0017] The first pressure chamber and the second pressure chamber are filled with hydraulic oil;

[0018] A connection pipe is further installed at the lower end of the first sealing cylinder. The connection pipe is used to communicate with the first pressure chamber.

[0019] As an alternative solution of the adaptive adjustment mobile hoisting device of the present utility model, wherein: a support shaft is further provided inside the main body framework, and the support shaft is used to support the first sealing cylinder to be movably installed inside the main body framework;

[0020] A sliding base is installed at the lower end of the main body framework, a slide rail is installed at the bottom end of the sliding base, and the sliding base is used to be slidably installed on the upper surface of the slide rail.

[0021] The present utility model has the following beneficial effects:

[0022] 1. For the adaptive adjustment mobile hoisting device, the device utilizes the extending power of the third sealing cylinder as the traction force for the counterweight end to slide outwards, and the two extend synchronously. The longer the third sealing cylinder extends outwards, the center support point between the first sealing cylinder and the connecting tail end can be adjusted, so that the center support point is always at the gravity balance position between the first sealing cylinder and the connecting tail end, keeping the two in a balanced state all the time. When the device is hoisting, due to the first sealing cylinder and the connecting tail end being in a balanced state, the pressure on the front end support of the boom is significantly reduced when hoisting, thereby ensuring that when the boom extends, the influence of its own weight on hoisting is reduced, and the hoisting stability is higher. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0024] Figure 2 It is a schematic plan view of the overall structure of the present utility model.

[0025] Figure 3 It is a schematic diagram of the internal structure of the first sealing cylinder of the present utility model.

[0026] Figure 4 It is a schematic diagram of the connection structure between the connecting tail end and the first sealing cylinder of the present utility model.

[0027] Figure 5 For the present utility model Figure 3 structural schematic diagram at position A.

[0028] In the figure: 1. Main body framework; 2. First sealing cylinder; 3. Second sealing cylinder; 4. Third sealing cylinder; 5. Piston; 6. Connecting tail end; 7. First extension end; 8. Second extension end; 9. Counterweight end; 10. First guide wheel; 11. Steel cable; 12. Second guide wheel; 13. Inner groove; 14. Support shaft; 15. Reinforcing rib; 16. First pressure chamber; 17. Second pressure chamber; 18. Connecting pipe; 19. Hydraulic rod; 20. Sliding base; 21. Slide rail; 22. Top plate; 23. Spring; 101. Connecting cross bar. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment 1

[0031] Please refer to Figures 1 - 5 , in which a kind of self - adaptive adjustable mobile hoisting device includes a main body framework 1 and a first sealed cylinder 2 inside the main body framework 1. The first sealed cylinder 2 is movably installed inside the main body framework 1, and a second sealed cylinder 3 is slidably installed inside the first sealed cylinder 2;

[0032] One end of the first sealed cylinder 2 is provided with a connecting tail end 6. The included angle between the connecting tail end 6 and the first sealed cylinder 2 is 120 degrees. A first extension end 7 is slidably installed inside the connecting tail end 6, a second extension end 8 is slidably installed inside the first extension end 7, and a counterweight end 9 is provided at one end of the second extension end 8;

[0033] One end of the inner wall of the second sealed cylinder 3 is fixedly installed with a steel cable 11. A first guide wheel 10 is installed inside the second extension end 8 and is located on the inner wall of the connecting tail end 6. The first guide wheel 10 is used for rotatably installing inside the inner groove 13. Connecting cross bars are provided on both sides of the inner wall of the connecting tail end 6, and one end of the connecting cross bar is used for rotatably connecting with both sides of the first guide wheel 10;

[0034] The inner part of the second extension end 8 is provided with an inner groove 13, and the first guide wheel 10 is used for rotatably installing inside the inner groove 13;

[0035] Connecting cross bars 101 are provided on both sides of the inner wall of the connecting tail end 6, and one end of the connecting cross bar 101 is used for rotatably connecting with both sides of the first guide wheel 10;

[0036] A spring 23 is further installed inside the second sealed cylinder 3. The top end of the steel cable 11 is provided with a top plate 22, and the spring 23 is used to provide elastic tension to the steel cable 11;

[0037] A second guide wheel 12 is further installed inside the first sealed cylinder 2 at one end of the connecting tail end 6. The steel cable 11 passes through the inside of the first sealed cylinder 2, passes along the bottom side of the second guide wheel 12, extends to the outer surface of the first guide wheel 10, winds around it for one week, and is fixedly installed at the lower end inside the second extension end 8;

[0038] Reinforcing ribs 15 are provided on the upper surface of the first sealed cylinder 2. The reinforcing ribs 15 are used to increase the connection strength between the first sealed cylinder 2 and the connecting tail end 6. A hydraulic rod 19 is installed on one side of the main body framework 1, and a support shaft 14 is further provided inside the main body framework 1.

[0039] During use, it extends outwards through the second sealing cylinder 3. At the same time, it winds around the outer surface of the first guide wheel 10 through the steel cable 11, and finally connects to the lower end of the second extension end 8. By pulling the steel cable 11 to move towards the first sealing cylinder 2, the second extension end 8 is driven to move simultaneously, and the moving direction is changed through the first guide wheel 10, causing the second extension end 8 to move in the opposite direction. The force that extends the third sealing cylinder 4 outwards is transformed into the thrust that extends the second extension end 8 outwards by using the first guide wheel 10, so as to extend the counterweight end 9 outwards;

[0040] The first sealing cylinder 2 and the connecting tail end 6 are combined into a bent boom, and the support shaft 14 serves as the support center point of the boom. In the initial state, the third sealing cylinder 4 and the second sealing cylinder 3 are retracted inside the first sealing cylinder 2. If no counterweight structure is added, one end of the boom will naturally fall due to the weight of the first sealing cylinder 2 itself. The longer the extension length of the first sealing cylinder 2, the support center point of 14 will be changed, causing the two ends of the boom to lose balance, and the end with the first sealing cylinder 2 will tilt downwards;

[0041] A lever support state is formed through 14. When a downward tilting force is applied to one end of the first sealing cylinder 2, an upward force is provided to one end of the connecting tail end 6. The length of one end of the connecting tail end 6 is less than that of the first sealing cylinder 2. Therefore, the weight of the connecting tail end 6 itself is less than that of the first sealing cylinder 2, resulting in the downward tilting of one end of the first sealing cylinder 2. By adding the weight of the counterweight end 9, it can exactly offset the weight of the first sealing cylinder 2 and the internal structure of the first sealing cylinder 2, and balance the downward acting force between the first sealing cylinder 2 and the connecting tail end 6;

[0042] Moreover, the counterweight end 9 is relatively heavy itself, and at the same time, it can extend outwards in proportion along with the extension of the second sealing cylinder 3 and the third sealing cylinder 4 through the drive of 12 and the first guide wheel 10. The extension ratio of the third sealing cylinder 4 to the counterweight end 9 is three to one, so that when the boom adjusts the angle, the weight of the first sealing cylinder 2 itself is prevented from being too large to affect the support effect of the hydraulic rod 19;

[0043] At this time, through the set angle of the first sealing cylinder 2 and the connecting tail end 6, a lever support state is formed between the first sealing cylinder 2 and the connecting tail end 6;

[0044] Through the linkage of the steel cable 11 and the extension through the counterweight end 9, although the extension length of the counterweight end 9 is less than that of the third sealing cylinder 4, the downward pressure caused by the third sealing cylinder 4 can be directly offset by the self-weight and extension length of the counterweight end 9. Moreover, the longer the third sealing cylinder 4 extends, the longer the counterweight end 9 extends accordingly, and the two extend in proportion. When the pulling distance reaches the limit distance of the second extension end 8, the first extension end 7 is driven to extend together. Between the third sealing cylinder 4 and the counterweight end 9, they are all linkage structures. Using the power of the third sealing cylinder 4 itself as the driving force, the device offsets the downward force of the third sealing cylinder 4 at the other end of the boom, so that the first sealing cylinder 2 and the connecting tail end 6 are in a state of gravitational balance;

[0045] The function of the spring 23 is to ensure that when the third sealing cylinder 4 extends, the extension lengths of the counterweight end 9 and the third sealing cylinder 4 are inconsistent, so as to avoid affecting the extension operation of the third sealing cylinder 4. And when the third sealing cylinder 4 retracts, the counterweight end 9 can also be pulled back to its original position by the spring 23;

[0046] The device uses the extension power of the third sealing cylinder 4 as the traction force for the counterweight end 9 to slide outwards, and the two extend synchronously. The longer the third sealing cylinder 4 extends outwards, the center support point of the first sealing cylinder 2 and the connecting tail end 6 can be adjusted, so that the center support point is always at the gravitational balance position of the first sealing cylinder 2 and the connecting tail end 6, keeping the two in a balanced state all the time. When the device is hoisting, due to the balance state of the first sealing cylinder 2 and the connecting tail end 6, the pressure on the front end of the boom during hoisting is significantly reduced, thus ensuring that when the boom extends, the influence of its own weight on hoisting is reduced, making the hoisting stability higher.

[0047] Embodiment 2

[0048] This embodiment is an explanatory description based on Embodiment 1. Specifically, please refer to Figures 1 - 5 , a third sealing cylinder 4 is slidably installed inside the second sealing cylinder 3;

[0049] A cavity is provided inside the first sealing cylinder 2 and the second sealing cylinder 3, and the cavity is the first pressure chamber 16;

[0050] A cavity is also provided between the second sealing cylinder 3 and the third sealing cylinder 4, and the cavity is the second pressure chamber 17;

[0051] Pistons 5 are fixedly installed at the bottom ends of the second sealing cylinder 3 and the third sealing cylinder 4, and the pistons 5 are used to provide the sealing effect of the first pressure chamber 16 and the second pressure chamber 17;

[0052] The first pressure chamber 16 and the second pressure chamber 17 are filled with hydraulic oil;

[0053] A connecting pipe 18 is also installed at the lower end of the first sealing cylinder 2, and the connecting pipe 18 is used to communicate with the first pressure chamber 16;

[0054] A support shaft 14 is also provided inside the main body framework 1, and the support shaft 14 is used to support the first sealing cylinder 2 and is movably installed inside the main body framework 1;

[0055] A sliding base 20 is installed at the lower end of the main body framework 1, and a slide rail 21 is installed at the bottom end of the sliding base 20. The sliding base 20 is used to be slidably installed on the upper surface of the slide rail 21.

[0056] It is connected to an external driving pump through the connecting pipe 18 to provide hydraulic pressure inside the first pressure chamber 16. The communication structure between the first pressure chamber 16 and the second pressure chamber 17 realizes the simultaneous pressurization state of the two, so that the second sealing cylinder 3 and the third sealing cylinder 4 extend outwards at the same time. Compared with the conventional support arm structure, the internal telescopic structure is simplified, and a single driving source can be used to realize the extension operation of the third sealing cylinder 4 and the second sealing cylinder 3.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An adaptively adjustable mobile hoisting device, comprising a main body framework (1) and a first sealing cylinder (2) inside the main body framework (1), characterized in that: Inside the main body structure (1), a first sealing cylinder (2) is installed movably, and a second sealing cylinder (3) is installed slidably inside the first sealing cylinder (2); One end of the first sealing cylinder (2) is provided with a connecting tail end (6). The angle between the connecting tail end (6) and the first sealing cylinder (2) is 120 degrees. A first extension end (7) is installed slidably inside the connecting tail end (6). A second extension end (8) is installed slidably inside the first extension end (7). One end of the second extension end (8) is provided with a counterweight end (9); One end of the inner wall of the second sealing cylinder (3) is fixedly installed with a steel cable (11). Inside the second extension end (8), a first guide wheel (10) located on the inner wall of the connecting tail end (6) is installed.

2. The adaptive adjustment mobile hoisting device according to claim 1, characterized in that: An inner groove (13) is provided inside the second extension end (8), and the first guide wheel (10) is used for being rotatably installed inside the inner groove (13); On both sides of the inner wall of the connecting tail end (6), connecting cross bars (101) are provided. One end of the connecting cross bar (101) is used for being rotatably connected to both sides of the first guide wheel (10); A spring (23) is further installed inside the second sealing cylinder (3). The top end of the steel cable (11) is provided with a top plate (22), and the spring (23) is used for providing an elastic pulling force to the steel cable (11).

3. The adaptive-adjusting mobile hoisting device according to claim 2, wherein: Inside the first sealing cylinder (2), a second guide wheel (12) located at one end of the connecting tail end (6) is further installed. The steel cable (11) passes through the inside of the first sealing cylinder (2), passes along the bottom side of the second guide wheel (12), extends to the outer surface of the first guide wheel (10), winds around it for one week, and is fixedly installed at the lower end inside the second extension end (8).

4. The adaptive adjustment mobile hoisting device according to claim 3, wherein: Reinforcing ribs (15) are provided on the upper surface of the first sealing cylinder (2). The reinforcing ribs (15) are used for increasing the connection strength between the first sealing cylinder (2) and the connecting tail end (6). A hydraulic rod (19) is installed on one side of the main body structure (1).

5. The adaptive adjustment mobile hoisting device according to claim 4, wherein: A third sealing cylinder (4) is installed slidably inside the second sealing cylinder (3).

6. The adaptive adjustment mobile lifting device according to claim 5, characterized in that: A cavity is provided between the inside of the first sealing cylinder (2) and the second sealing cylinder (3), and the cavity is a first pressure chamber (16); A cavity is further provided between the second sealing cylinder (3) and the third sealing cylinder (4), and the cavity is a second pressure chamber (17).

7. The self - adaptive adjustable mobile lifting device according to claim 6, characterized in that: Pistons (5) are fixedly installed at the bottom ends of the second sealing cylinder (3) and the third sealing cylinder (4). The pistons (5) are used for providing a sealing effect for the first pressure chamber (16) and the second pressure chamber (17); The first pressure chamber (16) and the second pressure chamber (17) are filled with hydraulic oil; A connecting pipe (18) is further installed at the lower end of the first sealing cylinder (2). The connecting pipe (18) is used for communicating with the first pressure chamber (16).

8. The adaptive-adjusting mobile hoisting device according to claim 1, wherein: A support shaft (14) is further provided inside the main body structure (1). The support shaft (14) is used for supporting the first sealing cylinder (2) to be installed movably inside the main body structure (1); A sliding base (20) is installed at the lower end of the main body frame (1), a slide rail (21) is installed at the bottom end of the sliding base (20), and the sliding base (20) is used for slidingly installing on the upper surface of the slide rail (21).

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