Movable hoisting device and method for special vehicle maintenance field operation

Abstract

The invention provides a movable hoisting device and method for special vehicle maintenance field operation. The movable hoisting device comprises a base assembly, a hoisting arm assembly, a hydraulic cylinder, a hoisting hook, a balancing weight and a fixing lug. The lifting device is simple in structure, convenient to operate and move and wide in applicability, the length of the lifting arm, the type of the lifting hook and the like can be adjusted according to actual use requirements so as to meet different lifting requirements, and the problems that in previous field operation, due to the fact that moving parts such as a driving wheel and an inducer are heavy, installation and maintenance are difficult, and manual operation intensity is large are solved; the device can be used for assisting workers to complete maintenance and installation of heavy parts, the working intensity of the workers is relieved, the installation quality is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of field operation hoisting, and in particular relates to a movable hoisting device and method for field operation of special vehicle maintenance. Background Art

[0002] When installing the driving wheel, induction wheel, side reducer and other moving parts of special vehicles on the vehicle, the parts to be installed need to be lifted and adjusted to match the vehicle installation position. However, due to the heavy weight and large volume of the driving wheel, induction wheel and other moving parts, it is difficult to lift the heavy parts by manpower alone.

[0003] When working in the factory, cranes are used to lift heavier parts and adjust the installation posture; however, when working in the field or in places where cranes are not available, manual handling and lifting are required to complete the installation of heavier parts on the vehicle. The current crane operation method has high requirements for site facilities; when working in the field or in places where cranes are not available, manual handling and lifting are used, which increases the labor intensity of personnel, reduces work efficiency, and cannot guarantee the installation quality. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention provides a movable lifting device and method for special vehicle maintenance field operations, so as to solve the technical problems of difficulty in installing larger and heavier parts on vehicles and high manual labor intensity during special vehicle maintenance field operations.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention proposes a movable lifting device for special vehicle maintenance field operations, the movable lifting device includes a base assembly, an arm assembly, a hydraulic cylinder, a hook, a counterweight and a fixing ear; wherein the base assembly is used for the overall support and fixation of the movable lifting device; the arm assembly whose length can be telescopically adjusted is installed on the base assembly; two fixing ears are vertically installed on the base assembly and the arm assembly, and are used to install the hydraulic cylinder; the two ends of the hydraulic cylinder are fixed on the two fixing ears, serving as the main power source of the movable lifting device; the hook is suspended at the front end of the arm assembly, and is used to lift heavy objects; the counterweight is placed on the base assembly, and is used to ensure the stability of the movable lifting device.

[0008] Furthermore, two fixing ears are vertically aligned and welded on the base assembly and the boom assembly.

[0009] Furthermore, both ends of the hydraulic cylinder are fixed on the two fixing ears by means of bolts, washers and nuts.

[0010] Furthermore, the hydraulic cylinder adopts a manual double-ear hydraulic cylinder.

[0011] Furthermore, the base assembly includes a bottom beam, universal wheels, longitudinal beams and connecting grooves; wherein, multiple bottom beams are welded in an interlaced manner to form a frame structure, and multiple universal wheels are respectively installed at the bottom of the multiple bottom beams; two longitudinal beams are fixed on the two bottom beams in a herringbone shape, and one of the longitudinal beams is fixed with a connecting groove; the boom assembly includes a fixed boom and an extension arm, and the fixed boom and the extension arm are respectively provided with multiple groups of equidistant adjustment holes, the extension arm is fixed to the fixed boom through the adjustment holes using bolts, washers and nuts, and the fixed end of the fixed boom is fixed to the connecting groove of the base assembly through a pin shaft and a cotter pin.

[0012] Furthermore, the bottom beam and the plurality of longitudinal beams are all square steel pipes.

[0013] Further, the hook is suspended at the front end of the extension arm of the boom assembly through bolts, washers and nuts.

[0014] Furthermore, the universal wheel has a locking function.

[0015] Furthermore, the two longitudinal beams are welded in a herringbone shape at the middle position of the two parallel bottom beams.

[0016] In addition, the present invention also proposes a movable lifting method for special vehicle maintenance field operations using the above movable lifting device, and the movable lifting method comprises the following steps:

[0017] S1. According to the use scenario requirements, select the appropriate matching hole positions of the extension arm and the fixed arm of the boom assembly, fix them with bolts, washers and nuts to adjust the gear position of the boom assembly;

[0018] S2. Remove the bolts and nuts of the hanging hook, replace the hook with a suitable one, and then install it with the bolts and nuts;

[0019] S3. Estimate the distribution of the counterweights according to the center of gravity and mass of the weights, and place them on both sides of the longitudinal beam of the base assembly;

[0020] S4. Push the movable lifting device to the vicinity of the part to be lifted, and place the hook above the lifting point of the part to be lifted;

[0021] S5. Lift the heavy objects by manually controlling the hydraulic cylinder;

[0022] S6. Observe the stress state of the movable lifting device, and keep the lifting posture of the movable lifting device balanced by adjusting the position and number of counterweights.

[0023] (III) Beneficial effects

[0024] The present invention proposes a movable lifting device and method for field operations of special vehicle maintenance, the movable lifting device comprising a base assembly, a boom assembly, a hydraulic cylinder, a hook, a counterweight and a fixing ear. The present invention has a simple structure, convenient operation, convenient movement and wide applicability. The length of the boom and the type of the hook can be adjusted according to actual use requirements to meet different lifting requirements, and the previous field operations have changed the problems of heavy weight of active parts such as driving wheels and induction wheels, difficult installation and maintenance, and high manual labor intensity. The use of the present device can assist manual labor in completing the maintenance and installation of heavy parts, reduce the labor intensity of personnel, improve installation quality, and improve work efficiency.

[0025] The present invention has the following specific beneficial effects:

[0026] 1. This device can assist manual labor in the maintenance and installation of heavy parts, reduce the workload of personnel, improve installation quality, and increase work efficiency.

[0027] 2. Different from the traditional method of using cranes or forklifts to transport and lift, the present invention innovatively proposes a movable manual hydraulic lifting tool to achieve heavy object hoisting, lifting, and transportation in field operations and without power supply.

[0028] 3. This device is a flexible device. The length of the boom can be adjusted and the size of the hook can be selected according to actual needs to meet the lifting, lifting and transportation needs of different scenes and different weights.

[0029] 4. The device is provided with counterweight blocks, and the stability of the device after the heavy object is lifted can be increased by adjusting the number and position of the counterweight blocks.

[0030] 5. The overall structure of this device conforms to the engineering design, is reliable and durable, and can sustainably meet the field operation needs of special vehicle maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the movable lifting device of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the movable lifting device of the present invention (without counterweight);

[0033] Figure 3 It is a schematic diagram of the use of the movable lifting device of the present invention (the length of the lifting arm);

[0034] Figure 4 This is a schematic diagram of the use of the movable lifting device of the present invention (with a short lifting arm);

[0035] Figure 5 It is a schematic diagram of the use of the movable lifting device of the present invention (without the extension arm).

[0036] In the figure: 1-base assembly; 2-arm assembly; 3-hydraulic cylinder; 4-hook; 5-counterweight; 6-fixing ear; 101-bottom beam; 102-universal wheel; 103-longitudinal beam; 104-connecting groove; 201-fixed boom; 202-extension arm. DETAILED DESCRIPTION

[0037] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0038] This embodiment provides a movable lifting device for field maintenance of special vehicles, the overall structure of which is as follows: Figure 1 As shown, it mainly includes a base assembly 1, a boom assembly 2, a hydraulic cylinder 3, a hook 4, a counterweight 5 and a fixing ear 6.

[0039] The base assembly 1 is used for the overall support and fixation of the movable lifting device. The arm assembly 2 with adjustable length is installed on the base assembly 1. Figure 2 As shown, the base assembly 1 includes a bottom beam 101, a universal wheel 102, a longitudinal beam 103 and a connection groove 104. Among them, the four bottom beams 101 and the two longitudinal beams 103 are all square steel pipes. The four bottom beams 101 are staggered and welded to form a frame structure. The seven universal wheels 102 are respectively installed at the bottom of the four bottom beams 101 to facilitate the movement of the movable lifting device. At the same time, the universal wheels 102 have a locking function to prevent the heavy objects from sliding during the lifting process. The two longitudinal beams 103 are welded in a herringbone shape in the middle position of the two parallel bottom beams 101, and a connection groove 104 is welded on the top of one of the longitudinal beams 103. The boom assembly 2 includes a fixed boom 201 and an extension arm 202. The fixed boom 201 and the extension arm 202 are respectively provided with four sets of equidistant adjustment holes. The extension arm 202 is fixed to the fixed boom 201 through the adjustment holes using bolts, washers and nuts. The fixed end of the fixed boom 201 is fixed to the connecting groove 104 of the base assembly 1 through a pin shaft and a cotter pin.

[0040] Two fixing ears 6 are vertically aligned and welded on the base assembly 1 and the boom assembly 2 for mounting the hydraulic cylinder 3. Both ends of the hydraulic cylinder 3 are fixed on the two fixing ears 6 by bolts, washers and nuts, serving as the main power source of the movable lifting device. In this embodiment, the hydraulic cylinder 3 is a manual double-ear hydraulic cylinder.

[0041] The hook 4 is suspended at the front end of the extension arm 202 of the boom assembly 2 by bolts, washers and nuts for lifting heavy objects; the counterweight 5 is placed on the bottom beam 101 of the base assembly 1 and on both sides of the longitudinal beam 103 to ensure the stability of the movable lifting device.

[0042] The movable lifting device of the present invention can adjust the length of the arm assembly 2 according to the use scenario and requirements, and there are 7 gears to choose from. In addition, the hooks 4 of different sizes and load-bearing capacities can be equipped according to the use scenario and requirements, and the number of counterweights 5 can be adjusted according to the center of gravity of the heavy object, the position and mass of the hook 4.

[0043] The movable lifting device of the present invention is used to carry out a movable lifting method for field maintenance of special vehicles, comprising the following steps:

[0044] S1. According to the use scenario requirements, select the appropriate matching hole positions of the extension arm 202 and the fixed boom 201, fix them with bolts, washers and nuts, and achieve the adjustment of the boom assembly to 2 gears.

[0045] S2. According to the lifting requirements, select a hook 4 of appropriate size. Remove the bolts and nuts of the hanging hook 4, replace the hook 4 with a suitable one, and then install it with the bolts and nuts.

[0046] S3. According to the center of gravity, mass, etc. of the heavy object, a preliminary estimate of the distribution plan of the counterweight blocks 5 is made, and they are placed on both sides of the longitudinal beam 103 of the base assembly 1 .

[0047] S4. Push the movable lifting device to the vicinity of the object to be lifted, and place the hook 4 above the lifting point of the object to be lifted.

[0048] S5. Lift the heavy object by manually controlling the hydraulic cylinder 3.

[0049] S6. Observe the stress state of the movable lifting device, and adjust the position and number of the counterweight blocks 5 to keep the lifting posture of the movable lifting device balanced.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A movable lifting device for field maintenance of special vehicles, characterized in that: The movable lifting device includes a base assembly, an arm assembly, a hydraulic cylinder, a hook, a counterweight and a fixing ear; wherein the base assembly is used for the overall support and fixation of the movable lifting device; the arm assembly whose length can be telescopically adjusted is installed on the base assembly; two fixing ears are vertically installed on the base assembly and the arm assembly to install the hydraulic cylinder; both ends of the hydraulic cylinder are fixed on the two fixing ears to serve as the main power source of the movable lifting device; the hook is suspended at the front end of the arm assembly to lift heavy objects; the counterweight is placed on the base assembly to ensure the stability of the movable lifting device.

2. The movable lifting device for field operation of special vehicle maintenance as claimed in claim 1, characterized in that: The two fixing ears are vertically aligned and welded to the base assembly and the boom assembly.

3. The movable lifting device for special vehicle maintenance field operation according to claim 1, characterized in that: Both ends of the hydraulic cylinder are fixed on the two fixing ears by bolts, washers and nuts.

4. The movable lifting device for special vehicle maintenance field operation according to claim 1, characterized in that: The hydraulic cylinder adopts a manual double-ear hydraulic cylinder.

5. The movable hoisting device for special vehicle maintenance field operation according to claim 1, characterized in that: The base assembly includes a bottom beam, universal wheels, longitudinal beams and connecting grooves; wherein, multiple bottom beams are welded in an interlaced manner to form a frame structure, and multiple universal wheels are respectively installed at the bottom of the multiple bottom beams; two longitudinal beams are fixed on the two bottom beams in a herringbone shape, and one of the longitudinal beams is fixed with a connecting groove; the boom assembly includes a fixed boom and an extension arm, and the fixed boom and the extension arm are respectively provided with multiple groups of equidistant adjustment holes, the extension arm is fixed to the fixed boom through the adjustment holes using bolts, washers and nuts, and the fixed end of the fixed boom is fixed to the connecting groove of the base assembly through a pin shaft and a cotter pin.

6. The movable lifting device for field operation of special vehicle maintenance as claimed in claim 5, characterized in that: The bottom beam and multiple longitudinal beams are all square steel tubes.

7. The movable lifting device for special vehicle maintenance field operation according to claim 5, characterized in that: The hook is suspended at the front end of the extension arm of the boom assembly by bolts, washers and nuts.

8. The movable lifting device for special vehicle maintenance field operation as claimed in claim 5, characterized in that: The universal wheels have a locking function.

9. The movable lifting device for field operation of special vehicle maintenance as claimed in claim 5, characterized in that: The two longitudinal beams are welded in a herringbone shape at the middle position of the two parallel bottom beams.

10. A movable lifting method for field maintenance of special vehicles using the movable lifting device according to any one of claims 1 to 9, characterized in that: The movable lifting method comprises the following steps: S1. According to the use scenario requirements, select the appropriate matching hole positions of the extension arm and the fixed arm of the boom assembly, fix them with bolts, washers and nuts to adjust the gear position of the boom assembly; S2. Remove the bolts and nuts of the hanging hook, replace the hook with a suitable one, and then install it with the bolts and nuts; S3. Estimate the distribution of the counterweights according to the center of gravity and mass of the weights, and place them on both sides of the longitudinal beam of the base assembly; S4. Push the movable lifting device to the vicinity of the part to be lifted, and place the hook above the lifting point of the part to be lifted; S5. Lift the heavy objects by manually controlling the hydraulic cylinder; S6. Observe the stress state of the movable lifting device, and keep the lifting posture of the movable lifting device balanced by adjusting the position and number of counterweights.

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