Oil pipe double-wheel guide seat for forklift

Abstract

The utility model relates to the technical field of forklift equipment, in particular to an oil pipe double-wheel guide seat for a forklift, which comprises a main lifting oil cylinder (1). A guide seat (2) and an oil pipe (3) are respectively arranged on the main lifting oil cylinder (1); the oil pipe (3) is arranged on the guide seat (2); the guide seat can guide the movement of the oil pipe, so that friction between the oil pipe and the main lifting oil cylinder during movement is effectively avoided; according to the guide seat, the number of the guide wheels is increased, and the stroke of the oil pipe is increased while the diameter of the guide wheels is reduced; the guide wheel can be prevented from being damaged due to the fact that the diameter of the guide wheel is too large and the guide wheel collides with the top of the forklift portal or an upper cover of a container.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift equipment, in particular to an oil pipe double-wheel guide seat for a forklift. Background Art

[0002] In the hydraulic system of a forklift, the inlet and outlet oil pipes on the oil cylinder need to move simultaneously with the ejector rod of the oil cylinder; for example, the main lifting cylinder oil pipe of the forklift mast is usually guided by a guide wheel, but the diameter of the guide wheel must be larger than the diameter of the oil cylinder, otherwise the oil pipe will rub against the oil cylinder during operation. Therefore, the diameter of the guide wheel is larger. In narrow spaces, such as containers, the guide wheel collides with the upper cover of the container when it is lifted to the top, causing the guide wheel to be often damaged and unusable. If other protections are added, the lifting height of the forklift is affected, which brings disadvantages to the operation of the forklift.

[0003] After searching, the applicant found that the Chinese patent document with publication number CN201932882U disclosed a forklift oil pipe guide wheel on August 17, 2011, including a guide wheel, a guide wheel shaft is sleeved inside the guide wheel, an isolation sleeve is surrounded on the outer surface of the guide wheel shaft, bearings are provided at both ends of the isolation sleeve, and a guide wheel cover is provided at the outer end of the bearing. The guide wheel cover and the guide wheel are fixedly connected by fasteners.

[0004] The device cannot guide the forklift oil pipe while avoiding collision with the container. Utility Model Content

[0005] The utility model aims to provide a double-wheel guide seat for an oil pipe which can guide an oil pipe of a forklift and avoid collision with a container.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an oil pipe double-wheel guide seat for a forklift, including a main lifting cylinder; a guide seat and an oil pipe are respectively provided on the main lifting cylinder; and the oil pipe is arranged on the guide seat.

[0007] The main lifting cylinder includes a piston rod; the piston rod is connected to the guide seat.

[0008] The guide seat comprises a guide wheel seat; the guide wheel seat is connected with a guide wheel.

[0009] The guide wheel seat comprises a bottom plate; side plates are respectively arranged on both sides of the bottom plate; a guide wheel shaft is arranged on the side plates; and the guide wheel is connected to the guide wheel shaft.

[0010] The guide wheel shaft includes a first guide wheel shaft and a second guide wheel shaft; the guide wheel includes a first guide wheel and a second guide wheel; the first guide wheel is sleeved on the first guide wheel shaft; the second guide wheel is sleeved on the second guide wheel shaft.

[0011] A gasket is provided between the guide wheel and the side plate.

[0012] The guide wheel is provided with a U-shaped groove.

[0013] The side plate is provided with a mounting hole; the guide wheel shaft is placed in the mounting hole; the end of the guide wheel shaft extends toward a side of the side plate away from the guide wheel and is connected with a nut.

[0014] The bottom plate is provided with a fixing hole, and the top surface of the piston rod is provided with a bolt mounting hole; a bolt is provided in the fixing hole, and the end of the bolt is connected to the bolt mounting hole.

[0015] The forklift comprises a forklift mast; a fork frame is arranged on the forklift mast; a lifting chain is connected to the end of the piston rod; and the lifting chain is connected to the fork frame.

[0016] The beneficial effects of this application are:

[0017] The oil pipe includes an oil inlet pipe and an oil outlet pipe; the main lifting oil cylinder includes a piston rod; the oil inlet pipe and the oil outlet pipe are both connected to the main lifting oil cylinder and move up and down with the piston rod;

[0018] The guide seat comprises a guide wheel seat and a guide wheel installed on the guide wheel seat; the guide wheel seat comprises a bottom plate and side plates arranged on both sides of the bottom plate; a guide wheel shaft is installed between the side plates; the guide wheel is sleeved on the guide wheel shaft and is arranged between adjacent side plates; the guide wheel comprises a first guide wheel and a second guide wheel; the first guide wheel and the second guide wheel are both provided with a U-shaped groove; the oil pipe is installed in the U-shaped groove; at this time, one end of the oil pipe is connected to the main lifting cylinder, and the other end is wrapped around the top of the piston rod and installed in the U-shaped groove of the first guide wheel and the second guide wheel, and is connected to the oil pump of the forklift; when the piston rod is lifted and lowered, the oil pipe moves in the U-shaped groove of the first guide wheel and the second guide wheel; the guide seat can guide the movement of the oil pipe, effectively avoiding the friction between the oil pipe and the main lifting cylinder during movement;

[0019] The guide seat of the device is provided with two guide wheels; compared with the traditional solution of providing a guide wheel on the piston rod, the diameters of the first guide wheel and the second guide wheel in the device are only one-third of the traditional solution; the device increases the number of guide wheels, reduces the diameter of the guide wheels and increases the stroke of the oil pipe; when the piston rod of the main lifting cylinder rises to the top, the device can prevent the guide wheel from having an excessively large diameter and hitting the top of the forklift mast or the upper cover of the container, causing damage to the guide wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the working status of the oil pipe double wheel guide seat for this forklift.

[0022] Figure 2 This is a partial enlarged view of point A of the oil pipe double wheel guide seat for this forklift.

[0023] Figure 3 This is a schematic diagram of the structure of the oil pipe double wheel guide seat for this forklift.

[0024] Figure 4 It is a side view of the oil pipe double wheel guide seat for this forklift.

[0025] Figure 5 This is a schematic diagram of the structure of the side plate of the oil pipe double wheel guide seat for the forklift.

[0026] The marks in the above figure are:

[0027] The markings in the figure are:

[0028] 1. Main lifting cylinder, 101, piston rod,

[0029] 2. Guide seat, 201. Guide wheel seat, 202. Guide wheel,

[0030] 3. YouTube,

[0031] 4. Bottom plate, 401. Side plate, 402. Mounting hole, 403. Fixing hole,

[0032] 5. Guide wheel shaft, 501. First guide wheel shaft, 502. Second guide wheel shaft,

[0033] 6. First guide wheel, 601. Second guide wheel, 602. U-shaped groove.

[0034] 7. Nuts,

[0035] 8. Lifting chain, 801. Forklift mast, 802. Fork frame. DETAILED DESCRIPTION

[0036] The following is a further detailed explanation of the specific implementation methods of the utility model through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the utility model and facilitating its implementation.

[0037] Figure 1The oil pipe double wheel guide seat for forklift shown in the figure comprises a main lifting cylinder 1 ; a guide seat 2 and an oil pipe 3 are respectively arranged on the main lifting cylinder 1 ; and the oil pipe 3 is arranged on the guide seat 2 .

[0038] The guide seat 2 can guide the movement of the oil pipe 3, effectively preventing the oil pipe 3 from rubbing against the main lifting cylinder 1 during movement; the guide seat 2 increases the number of guide wheels 202, reduces the diameter of the guide wheels 202, and increases the stroke of the oil pipe 3; it can prevent the guide wheel 202 from being too large in diameter and hitting the top of the forklift mast 801 or the upper cover of the container, causing damage to the guide wheel 202.

[0039] The main lifting cylinder 1 includes a piston rod 101; the piston rod 101 is connected to the guide seat 2. The piston rod 101 can be extended and retracted in the main lifting cylinder 1, and the lifting chain 8 can be lifted up; the oil pipe 3 includes an oil inlet pipe and an oil outlet pipe, which are respectively connected to the oil inlet and oil outlet on the main lifting cylinder 1; the guide seat 2 is fixedly connected to the top of the piston rod 101; the oil pipe 3 passes through the guide seat 2 on the top of the piston rod 101 from one side of the piston rod 101, and goes around to the other side of the piston rod 101 to connect with the oil pump of the forklift; the guide seat 2 limits and guides the oil pipe 3 to prevent the oil pipe 3 from contacting and wearing with the main lifting cylinder 1 when the piston rod 101 moves up and down, and can prevent the oil pipe 3 from being entangled in other structures, resulting in tearing and damage.

[0040] The guide seat 2 includes a guide wheel seat 201; a guide wheel 202 is connected to the guide wheel seat 201. The guide wheel 202 can rotate freely on the guide wheel seat 201, and the pipeline of the oil pipe 3 is placed on the guide wheel 202. When the oil pipe 3 starts to move, the guide wheel 202 rotates with the oil pipe 3, making its movement smoother and more flexible; the guide wheel seat 201 is welded from steel plates.

[0041] The guide wheel seat 201 includes a bottom plate 4; side plates 401 are respectively provided on both sides of the bottom plate 4; a guide wheel shaft 5 is provided on the side plates 401; and the guide wheel 202 is connected to the guide wheel shaft 5. The bottom plate 4 and two side plates 401 provided on both sides of the bottom plate 4 form the overall structure of the guide wheel seat 201; a guide wheel shaft 5 is provided between the adjacent two side plates 401, and the side plates 401 are fixedly connected to the guide wheel shaft 5; the guide wheel 202 is sleeved on the guide wheel shaft 5 and can flexibly rotate on the guide wheel shaft 5.

[0042] The guide wheel shaft 5 includes a first guide wheel shaft 501 and a second guide wheel shaft 502; the guide wheel 202 includes a first guide wheel 6 and a second guide wheel 601; the first guide wheel 6 is sleeved on the first guide wheel shaft 501; the second guide wheel 601 is sleeved on the second guide wheel shaft 502. The guide wheel seat 201 is provided with a first guide wheel 6 and a second guide wheel 601; the number of guide wheels 202 is increased, and the travel of the oil pipe 3 is increased while the diameter of the guide wheel 202 is reduced; when the piston rod 101 of the main lifting cylinder 1 is raised to the highest point, the first guide wheel 6 and the second guide wheel 601 can avoid hitting the top of the forklift mast 801 or the upper cover of the container due to the large diameter, causing damage to them; the distance between the first guide wheel 6 and the second guide wheel 601 is greater than the diameter of the main lifting cylinder 1.

[0043] A gasket is provided between the guide wheel 202 and the side plate 401. The gasket can separate the side of the guide wheel 202 from the side plate 401, which can effectively prevent the guide wheel 202 from causing wear to the side plate 401 when rotating, and can increase the service life of the guide wheel 202 and the side plate 401.

[0044] The guide wheel 202 is provided with a U-shaped groove 602. The guide wheel 202 is made of plastic; the guide wheel 202 has a U-shaped groove 602 on its wheel surface; the U-shaped groove 602 can limit the oil pipe 3 to prevent it from moving to both sides and causing the oil pipe 3 to fall off the guide wheel 202; and the U-shaped groove 602 can provide protection for the oil pipe 3.

[0045] The side plate 401 is provided with a mounting hole 402; the guide wheel shaft 5 is placed in the mounting hole 402; the end of the guide wheel shaft 5 extends to the side of the side plate 401 away from the guide wheel 202, and is connected with a nut 7. Both ends of the guide wheel shaft 5 are respectively provided with external threads, and the nut 7 is connected to the external threads; the end of the guide wheel shaft 5 passes through the mounting hole 402 and extends to the outside of the side plate 401, and the nut 7 is installed on the extended end of the guide wheel shaft 5 and is tightly pressed against the side plate 401, thereby achieving a stable connection of the guide wheel shaft 5 on the guide wheel seat 201.

[0046] A fixing hole 403 is provided on the bottom plate 4, and a bolt mounting hole is provided on the top surface of the piston rod 101; a bolt is provided in the fixing hole 403, and the end of the bolt is connected to the bolt mounting hole. The fixing hole 403 is provided in the middle of the bottom plate 4; the end of the bolt passes through the fixing hole 403 and is threadedly connected to the bolt mounting hole; the bolt presses the bottom plate 4 against the top of the piston rod 101, thereby realizing a stable connection of the guide seat 2 on the piston rod 101.

[0047] The forklift includes a forklift mast 801; a fork frame 802 is provided on the forklift mast 801; a lifting chain 8 is connected to the end of the piston rod 101; and the lifting chain 8 is connected to the fork frame 802. A guide rail is provided on the forklift mast 801, and the fork frame 802 is installed on the guide rail; the lifting chain 8 is fixedly connected to the fork frame 802; a gear is provided at the end of the piston rod 101, and the gear is meshed with the lifting chain 8; when the piston rod 101 is extended, the gear provided at the end of the piston rod 101 drives the lifting chain 8 to rise, and the lifting chain 8 lifts the fork frame 802 upward along the forklift mast 801; when the piston rod 101 is retracted, the gear provided at the end of the piston rod 101 drives the lifting chain 8 to descend, and the lifting chain 8 lowers the fork frame 802 downward along the forklift mast 801; thereby, the lifting and lowering operation of the fork frame 802 can be realized.

[0048] The specific working process of the utility model is as follows:

[0049] Install the first guide wheel 6 and the second guide wheel 601 on the guide wheel seat 201; bolt the bottom plate 4 of the guide wheel seat 201 to the top surface of the piston rod 101; and install the oil pipe 3 in the U-shaped groove 602 of the first guide wheel 6 and the second guide wheel 601.

[0050] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A double-wheel guide seat for oil pipes for forklifts, characterized in that: It comprises a main lifting oil cylinder (1); a guide seat (2) and an oil pipe (3) are respectively arranged on the main lifting oil cylinder (1); and the oil pipe (3) is arranged on the guide seat (2).

2. The oil pipe double wheel guide seat for forklift according to claim 1, characterized in that: The main lifting cylinder (1) comprises a piston rod (101); the piston rod (101) is connected to the guide seat (2).

3. The oil pipe double wheel guide seat for forklift according to claim 2, characterized in that: The guide seat (2) comprises a guide wheel seat (201); a guide wheel (202) is connected to the guide wheel seat (201).

4. The oil pipe double wheel guide seat for forklift according to claim 3, characterized in that: The guide wheel seat (201) comprises a bottom plate (4); side plates (401) are respectively provided on both sides of the bottom plate (4); a guide wheel shaft (5) is provided on the side plate (401); and the guide wheel (202) is connected to the guide wheel shaft (5).

5. The oil pipe double wheel guide seat for forklift according to claim 4, characterized in that: The guide wheel shaft (5) comprises a first guide wheel shaft (501) and a second guide wheel shaft (502); the guide wheel (202) comprises a first guide wheel (6) and a second guide wheel (601); the first guide wheel (6) is sleeved on the first guide wheel shaft (501); and the second guide wheel (601) is sleeved on the second guide wheel shaft (502).

6. The oil pipe double wheel guide seat for forklift according to claim 5, characterized in that: A gasket is provided between the guide wheel (202) and the side plate (401).

7. A double-wheel guide seat for oil pipe for forklift according to any one of claims 4 to 6, characterized in that: The guide wheel (202) is provided with a U-shaped groove (602).

8. The oil pipe double wheel guide seat for forklift according to claim 7, characterized in that: The side plate (401) is provided with a mounting hole (402); the guide wheel shaft (5) is placed in the mounting hole (402); the end of the guide wheel shaft (5) extends toward a side of the side plate (401) away from the guide wheel (202) and is connected with a nut (7).

9. The oil pipe double wheel guide seat for forklift according to claim 8, characterized in that: The bottom plate (4) is provided with a fixing hole (403), and the top surface of the piston rod (101) is provided with a bolt mounting hole; a bolt is provided in the fixing hole (403), and the end of the bolt is connected to the bolt mounting hole.

10. The oil pipe double wheel guide seat for forklift according to claim 9, characterized in that: The forklift comprises a forklift mast (801); a fork frame (802) is provided on the forklift mast (801); a lifting chain (8) is connected to the end of the piston rod (101); and the lifting chain (8) is connected to the fork frame (802).

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