CN113319797B

CN113319797B - Method for replacing lifting oil cylinder of forklift

Info

Publication number: CN113319797B
Application number: CN202110645200.2A
Authority: CN
Inventors: 孙云
Original assignee: Jiaxing Material Recycling Co ltd
Current assignee: Jiaxing Material Recycling Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-09-23
Anticipated expiration: 2041-06-09
Also published as: CN113319797A

Abstract

The invention discloses a method for replacing a lifting oil cylinder of a forklift, which is characterized by comprising the following steps: 1. disassembling the chain; 2. disassembling the fork foot frame; 3. the movable door frame is lifted to above 2/3, and the movable door frame is supported and fixed; 4. disassembling an oil inlet pipe of the oil cylinder; 5. disassembling a plunger fixing bolt; 6. the oil cylinder is moved out from the lower part; 7. replacing the oil cylinder sealing ring; 8. and returning the oil cylinders with the replaced sealing rings according to the disassembly sequence, and installing the oil cylinders until the oil cylinders are installed, wherein the operation is carried out on the maintenance platform and a test run is carried out.

Description

Method for replacing lifting oil cylinder of forklift

Technical Field

The invention belongs to the technical field of machinery, and relates to a method for replacing a lifting oil cylinder of a forklift.

Background

Fork trucks are industrial handling vehicles, and refer to various wheeled handling vehicles that perform handling, stacking, and short-distance transport operations on piece pallet goods. Industrial transportation vehicles are widely used in ports, stations, airports, cargo yards, factory workshops, warehouses, distribution centers, and the like, perform loading, unloading, and transportation operations of pallet goods in cabins, carriages, and containers, are indispensable equipment for pallet transportation and container transportation, and are generally driven by fuel engines or batteries. When dismantling scrapped vehicles, a forklift is often needed, and after the forklift is used for a long time, a sealing ring on an oil piston of a lifting oil cylinder is worn, the lifting cannot be performed, and only the sealing ring on the piston can be replaced. The conventional method comprises the following steps: 1. disassembling the chain; 2. disassembling an oil inlet pipe; 3. disassembling a locking bolt of the upper end piston column; 4. the oil cylinder is drawn out from the upper side by at least two persons; the method has huge engineering and higher difficulty; therefore, it is necessary to design a method for replacing the lifting cylinder of the forklift.

Disclosure of Invention

The invention aims to provide a method for replacing a lifting oil cylinder of a forklift in order to solve the problems in the prior art.

The purpose of the invention can be realized by the following technical scheme: a method for replacing a lifting oil cylinder of a forklift is characterized by comprising the following steps:

1. disassembling the chain; 2. disassembling the fork foot frame; 3. the movable door frame is lifted to above 2/3, and the movable door frame is supported and fixed; 4. disassembling an oil inlet pipe of the oil cylinder; 5. disassembling a plunger fixing bolt; 6. the oil cylinder is moved out from the lower part; 7. replacing the oil cylinder sealing ring; 8. and returning the oil cylinders with the replaced sealing rings according to the disassembly sequence, and installing the oil cylinders until the oil cylinders are installed, wherein the operation is carried out on the maintenance platform and a test run is carried out.

The maintenance platform includes the base, the top fixedly connected with rail of base, a side symmetry fixedly connected with hinge of rail, the opposite side fixedly connected with emergency exit of hinge, the lower surface both sides of base symmetry fixedly connected with fork hole seat respectively, the spout has been seted up to the inner wall symmetry of fork hole seat, the inside bottom of fork hole seat has seted up flutedly, the bottom and the recess of spout are linked together, the inside of recess is run through and is rotated and be connected with the threaded rod, the inside sliding connection of spout has splint, the inside surface with the threaded rod of the bottom of splint passes through the screw thread rotation and is connected, the threaded rod is located the first gear of the outside one end fixedly connected with of fork hole seat, the fixed backup pad that has of surface one side symmetry of base, the surface of backup pad runs through sliding connection has the inserted bar.

The lower fixed surface of fork hole seat installs the universal wheel, the inner wall sliding connection of first limiting plate and first bracing piece.

The outer surface of the fork hole seat is provided with a motor at a position close to the threaded rod, and an output shaft of the motor is fixedly connected with a second gear meshed with the first gear.

The top end of the inserted bar is fixedly connected with a limiting plate, a spring is sleeved on the outer surface of one end, located above the supporting plate, of the inserted bar, and the two ends of the spring are fixedly connected to the upper surface of the supporting plate and the lower surface of the limiting plate respectively.

The top of rail all fixedly connected with lug all around.

The base is a box structure with an open top.

The motor can drive the threaded rod to rotate in this maintenance platform to drive two splint relative movement, and then can press from both sides the fork of the fork truck in the fork hole seat tightly, and then can avoid the maintenance platform the condition that rocks to appear when using, thereby greatly increased the stability of maintenance platform, through inserting the inserted bar on fork truck's fork frame, thereby can prescribe a limit to the maintenance platform, and then avoid the condition that the landing appears in the maintenance platform, greatly increased the security.

Compared with the prior art, the method for replacing the lifting oil cylinder of the forklift has the advantages that:

1. a single person is operational;

2. the safety is good;

3. the maintenance efficiency is high;

4. through the specially designed maintenance platform, the maintenance difficulty is greatly reduced, and meanwhile, the safety is greatly improved.

Drawings

FIG. 1 is a schematic view of the overall construction of a service platform;

FIG. 2 is a side view of the service platform;

FIG. 3 is a schematic view of the internal structure of the fork bore seat of the service platform;

fig. 4 is a top view of the service platform.

In the figure, 1, a base; 2. a fence; 3. a hinge; 4. a safety door; 5. lifting lugs; 6. a fork hole seat; 7. a chute; 8. a groove; 9. a threaded rod; 10. a splint; 11. a first gear; 12. a support plate; 13. inserting a rod; 14. a universal wheel; 15. a motor; 16. a second gear; 17. a limiting plate; 18. a spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The method for replacing the lifting oil cylinder of the forklift comprises the following steps:

1. disassembling the chain; 2. disassembling a fork foot frame; 3. the movable door frame is lifted to above 2/3, and the movable door frame is supported and fixed; 4. disassembling an oil inlet pipe of the oil cylinder; 5. disassembling a plunger fixing bolt; 6. the oil cylinder is moved out from the lower part; 7. replacing the oil cylinder sealing ring; 8. and returning the oil cylinders with the replaced sealing rings according to the disassembly sequence, and installing the oil cylinders until the oil cylinders are installed, wherein the operation is carried out on the maintenance platform and a test run is carried out.

Fig. 1 to 4 show, the maintenance platform includes base 1, base 1's top fixedly connected with rail 2, rail 2's one side symmetry fixedly connected with hinge 3, hinge 3's opposite side fixedly connected with emergency exit 4, base 1's lower surface both sides symmetry fixedly connected with fork hole seat 6 respectively, spout 7 has been seted up to the inner wall symmetry of fork hole seat 6, recess 8 has been seted up to the inside bottom of fork hole seat 6, the bottom and the recess 8 of spout 7 are linked together, the inside of recess 8 runs through to rotate and is connected with threaded rod 9, the inside sliding connection of spout 7 has splint 10, the inside surface with threaded rod 9 of the bottom of splint 10 passes through the screw thread rotation to be connected, threaded rod 9 is located the first gear 11 of the outside one end fixedly connected with of fork hole seat 6, the outside surface one side symmetry fixed connection of base 1 has backup pad 12, the surface of backup pad 12 runs through sliding connection has inserted bar 13.

When the maintenance platform is used, the maintenance platform is firstly moved to a proper position through the universal wheels 14, then the forks of a forklift are sequentially inserted into the fork hole seats 6 on two sides, the motor 15 is started, the motor 15 rotates to drive the second gear 16 to rotate, the second gear 16 rotates to drive the threaded rod 9 to rotate, so that the clamping plates 10 on two sides are driven to move relatively, the forks of the forklift in the fork hole seats 6 can be clamped tightly, the situation that the maintenance platform shakes when in use can be avoided, the stability of the maintenance platform is greatly increased, then the limiting plates 17 are pulled, the inserting rods 13 are inserted into the fork frames of the forklift under the action force of the springs 18, the maintenance platform can be limited, the situation that the maintenance platform slides down is avoided, and the safety is greatly increased.

The motor 15 is installed to the surface of fork hole seat 6 and the position that is close to threaded rod 9, and the output shaft fixedly connected with of motor 15 and the second gear 16 of first gear 11 looks meshing, and motor 15 rotates and drives second gear 16 and rotate, and second gear 16 rotates and drives threaded rod 9 and rotate to the splint 10 relative movement of drive both sides, and then can press from both sides the fork of the fork truck in the fork hole seat 6 tight.

The top fixedly connected with limiting plate 17 of inserted bar 13, the one end surface cover that inserted bar 13 is located the backup pad 12 top is equipped with spring 18, and the both ends of spring 18 are in the upper surface of backup pad 12 and the lower fixed surface of limiting plate 17 is connected respectively, and limiting plate 17 is for the convenience of prescribing a limit to inserted bar 13 and also is convenient for pull inserted bar 13 simultaneously, and spring 18 is for the convenience of making inserted bar 13 resume original state.

Equal fixedly connected with lug 5 all around the top of rail 2, lug 5 is for the convenience of the hoist and mount of maintenance platform use to increase the practicality.

The base 1 is a box structure with an open top, so that maintenance personnel can use and place articles conveniently.

The above components are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A method for replacing a lifting oil cylinder of a forklift is characterized by comprising the following steps:

1. disassembling the chain; 2. disassembling the fork foot frame; 3. the movable door frame is lifted to above 2/3, and the movable door frame is supported and fixed; 4. disassembling an oil inlet pipe of the oil cylinder; 5. disassembling a plunger fixing bolt; 6. the oil cylinder is moved out from the lower part; 7. replacing the oil cylinder sealing ring; 8. returning the oil cylinders with the replaced sealing rings in the disassembling sequence, and installing the oil cylinders until the oil cylinders are installed, wherein the operation is carried out on a maintenance platform and a trial run is carried out;

the maintenance platform comprises a base (1), a fence (2) is fixedly connected to the top of the base (1), a hinge (3) is symmetrically and fixedly connected to one side of the fence (2), a safety door (4) is fixedly connected to the other side of the hinge (3), fork hole seats (6) are respectively and symmetrically and fixedly connected to two sides of the lower surface of the base (1), sliding grooves (7) are symmetrically formed in the inner wall of each fork hole seat (6), grooves (8) are formed in the bottom of the inner portion of each fork hole seat (6), the bottom of each sliding groove (7) is communicated with the corresponding groove (8), threaded rods (9) are rotatably connected to the inner portions of the grooves (8) in a penetrating manner, clamping plates (10) are slidably connected to the inner portions of the sliding grooves (7), the inner portions of the bottoms of the clamping plates (10) are rotatably connected with the outer surfaces of the threaded rods (9) through threads, first gears (11) are fixedly connected to one ends, located outside the fork hole seats (6), of the threaded rods (9), one side of the outer surface of the base (1) is symmetrically and fixedly connected with a supporting plate (12), and the outer surface of the supporting plate (12) is connected with an inserted link (13) in a penetrating and sliding manner; a motor (15) is mounted on the outer surface of the fork hole seat (6) and close to the threaded rod (9), and an output shaft of the motor (15) is fixedly connected with a second gear (16) meshed with the first gear (11); the top fixedly connected with limiting plate (17) of inserted bar (13), the one end surface cover that inserted bar (13) is located backup pad (12) top is equipped with spring (18), the both ends of spring (18) are respectively in the upper surface of backup pad (12) and the lower fixed surface connection of limiting plate (17).

2. The method for replacing the lift cylinder of the forklift according to claim 1, wherein: and a universal wheel (14) is fixedly arranged on the lower surface of the fork hole seat (6).

3. The method for replacing the lift cylinder of the forklift according to claim 1, wherein: the top of rail (2) is all fixedly connected with lug (5) all around.

4. The method for replacing the lift cylinder of the forklift according to claim 3, wherein: the base (1) is of a box structure with an open top.