阅读说明：本技术 一种对折式前移油缸 (Doubling type forward oil cylinder ) 是由 田松杰 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种对折式前移油缸,包括第一缸筒和第二缸筒,所述第一缸筒和第二缸筒方向相反地相互焊接在缸筒筒身上,所述第一缸筒和第二缸筒内分别活动设置有第一活塞和第二活塞,所述第一活塞和第二活塞上均固定连接有活塞杆,所述活塞杆均活动插设在缸盖内,所述活塞杆一侧固定套设有锥套,所述锥套与缸盖上的切油孔配合连接,所述第一活塞上开设有节流孔,本发明将两个油缸对折式设置,实现了短安装距长行程的要求,同时优化了多级式油缸的伸缩突变现象,同时利用节流孔控制了油缸的动作顺序,通过切油孔实现缓冲节流,保证了门架伸缩的稳定性。(The invention discloses a folding forward oil cylinder which comprises a first cylinder barrel and a second cylinder barrel, wherein the first cylinder barrel and the second cylinder barrel are oppositely welded on a cylinder barrel body, a first piston and a second piston are respectively and movably arranged in the first cylinder barrel and the second cylinder barrel, piston rods are fixedly connected to the first piston and the second piston, the piston rods are movably inserted in a cylinder cover, a taper sleeve is fixedly sleeved on one side of each piston rod and is matched and connected with an oil cutting hole in the cylinder cover, and a throttling hole is formed in the first piston.)

1. The utility model provides a fifty percent discount formula hydro-cylinder that moves forward, includes first cylinder (1) and second cylinder (2), its characterized in that: first cylinder (1) and second cylinder (2) opposite direction mutual welding on the cylinder barrel, first piston (3) and second piston (7) are provided with in first cylinder (1) and the second cylinder (2) activity respectively, equal fixedly connected with piston rod (6) on first piston (3) and second piston (7), piston rod (6) all move about to insert and establish in cylinder cap (5), the fixed cover in piston rod (6) one side is equipped with taper sleeve (10), taper sleeve (10) are connected with cutting oilhole (9) cooperation on cylinder cap (5), orifice (8) have been seted up on first piston (3).

2. The doubling type forward oil cylinder according to claim 1, characterized in that: the first cylinder barrel (1) and the second cylinder barrel (2) are identical in inner diameter, and the inner diameters of all sections of the same cylinder barrel are identical.

3. The doubling type forward oil cylinder according to claim 1, characterized in that: the number of the throttling holes (8) formed in the second piston (7) is one or more.

4. The doubling type forward oil cylinder according to claim 1, characterized in that: the piston rods (6) in the first cylinder barrel (1) and the second cylinder barrel (2) act along opposite directions.

5. The doubling type forward oil cylinder according to claim 1, characterized in that: the taper sleeve (10) is respectively arranged close to the first piston (3) and the second piston (7).

Technical Field

The invention relates to the technical field of forklift forward moving oil cylinders, in particular to a folding forward moving oil cylinder.

Background

At present, many domestic industrial manufacturing enterprises can not carry long goods (such as round steel, section bars, logs and the like) by using a common counter weight forklift or a forward-moving forklift, most goods need to be carried to a tractor by using a crane, and after the goods are transported to a specified position by the tractor, the goods are taken down by using the crane.

At present, the executing devices for realizing the forward movement of the wide and narrow forklift mast are as follows:

1. the mechanism is mainly applied abroad, and can meet the requirement of realizing short installation distance and long stroke of a wide and narrow forklift gantry forward moving executing element, but in the mechanism, the continuous rotation of the hydraulic motor can drive the chain to continuously move forwards, so that the mechanism needs to be provided with a mechanical limit and a potentiometer to limit the forward moving distance of the gantry and detect the position of the gantry so as to carry out speed reduction and buffering, which directly results in a complex structure and more fault points of the mechanism, and meanwhile, the self-locking performance of the motor chain mechanism is poor, so that the stability of goods in the carrying process is difficult to ensure;

2. multistage antedisplacement hydro-cylinder structure, this mechanism have reached the requirement of short installation distance long stroke, nevertheless because the bore of multistage jar has the jump nature, thereby can produce the sudden change phenomenon at the flexible in-process of fuel feeding and lead to the piston rod to take place the tremble, and then hydraulic shock is great when leading to the portal antedisplacement, therefore whole car can produce the shake phenomenon, is unfavorable for the steady stack of goods.

In order to make up for the defects of the forklift gantry forward movement actuating mechanism, the invention aims to design the folding type oil cylinder which has a short distance and a long stroke, meets the requirement of carrying long materials in a narrow space, has a stable telescopic cylinder body, has a self-locking function and has a tangential flow buffering function.

Disclosure of Invention

The invention aims to provide a folding type forward oil cylinder to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a fifty percent discount formula antedisplacement hydro-cylinder, includes first cylinder and second cylinder, first cylinder and second cylinder opposite direction mutual welding are on the cylinder barrel, the activity is provided with first piston and second piston respectively in first cylinder and the second cylinder, equal fixedly connected with piston rod on first piston and the second piston, the equal activity of piston rod is inserted and is established in the cylinder cap, the fixed cover in piston rod one side is equipped with the taper sleeve, the taper sleeve is connected with the cooperation of cutting the oilhole on the cylinder cap, the orifice has been seted up on the first piston.

Preferably, the first cylinder barrel and the second cylinder barrel have the same inner diameter, and the inner diameters of the cross sections of the same cylinder barrel are the same.

Preferably, the number of the throttle holes formed in the second piston is one or more.

Preferably, the piston rods in the first and second cylinders act in opposite directions.

Preferably, the taper sleeve is disposed adjacent to the first piston and the second piston, respectively.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the two oil cylinder barrels are overlapped and welded together in opposite directions to form the folded oil cylinder, the two piston rods of the oil cylinder stretch in opposite directions, and on the basis of ensuring a long forward stroke, the mounting distance is reduced by half, so that the requirement of short mounting distance and long stroke of the forward oil cylinder is met, and long materials can be smoothly carried in a narrow space;

2. the diameters of the two oil cylinders are the same, and the gantry does not change suddenly due to the same cylinder diameter under the working conditions of forward movement and backward movement, so that the stability of the gantry in operation is ensured, the shaking of the whole vehicle body is avoided, and the stability of goods during stacking is ensured;

3. the buffer system of the oil cylinder realizes buffering by the contact of the taper sleeve and the cylinder cover hole, when the oil cylinder moves forwards, and when the taper sleeve moves to the cylinder cover hole, the end with the smaller outer diameter of the taper sleeve can be inserted into the hole of the cylinder cover, so that the taper sleeve can play a role in cutting oil, thereby performing flow cutting and realizing the buffer function;

4. according to the invention, the throttle hole is additionally arranged on the first piston, so that pressure difference is generated, and damping is increased, so that the piston rod of the second piston stretches in advance and the piston rod of the first piston works in the backward direction under the condition that the first piston and the second piston synchronously supply oil, thus the action sequence of the oil cylinder can be controlled, and the oil cylinder cannot generate buffer disorder.

According to the invention, the two oil cylinders are arranged in a folded mode, so that the requirement of short mounting distance and long stroke is met, the expansion mutation phenomenon of the multi-stage oil cylinder is optimized, the action sequence of the oil cylinder is controlled by the throttling hole, the buffer throttling is realized through the oil cutting hole, and the expansion stability of the portal frame is ensured.

Drawings

FIG. 1 is an overall cross-sectional schematic view of the present invention;

FIG. 2 is an enlarged view of the structure of area A of the present invention;

FIG. 3 is an enlarged view of the structure of the area B of the present invention;

FIG. 4 is an enlarged view of the structure of the region C according to the present invention;

fig. 5 is an enlarged schematic view of the D-region structure of the present invention.

In the figure: 1 a first cylinder barrel, 2 a second cylinder barrel, 3 a first piston, 4 taper sleeves, 5 a cylinder cover, 6 a piston rod, 7 a second piston, 8 a throttling hole, 9 an oil cutting hole and 10 taper sleeves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a fifty percent discount formula hydro-cylinder that moves forward, including first cylinder 1 and second cylinder 2, first cylinder 1 and 2 opposite direction mutual welding of second cylinder are on the cylinder stack shell, the activity is provided with first piston 3 and second piston 7 in first cylinder 1 and the second cylinder 2 respectively, equal fixedly connected with piston rod 6 on first piston 3 and the second piston 7, piston rod 6 all activity is inserted and is established in cylinder cap 5, the fixed cover in 6 one side of piston rod is equipped with taper sleeve 10, taper sleeve 10 is connected with the cooperation of cutting oilhole 9 on the cylinder cap 5, orifice 8 has been seted up on the first piston 3.

The double-folding type forward oil cylinder is formed by mutually welding cylinder barrel bodies of two cylinder barrels with the same cylinder diameter, and when the first piston 3 and the second piston 7 move, the piston rods 6 move in opposite directions, so that the installation distance can be reduced by half under the condition of ensuring the stroke.

Preferably, the first cylinder 1 and the second cylinder 2 have the same inner diameter and the same inner diameter of the cross section of the same cylinder.

Because the cylinder diameter of the first cylinder barrel 1 is the same as that of the second cylinder barrel 2, and the inner diameter of each section of the same cylinder barrel is the same, when the portal frame moves forwards, the pressure cannot fluctuate greatly due to the fact that the cylinder diameter cannot change suddenly, so that the stability of portal frame movement is effectively guaranteed, and shaking of a vehicle body is prevented.

Preferably, the second piston 7 is provided with one or more orifices 8.

The throttle hole 8 is designed on the first piston 3 of the first cylinder barrel 1, the throttle hole 8 is not designed on the second piston 7 of the second cylinder barrel 2, the throttle hole 8 of the first piston 3 can play a damping role, and the throttle hole 8 of the second piston 7 is not arranged on the second piston 7, so that the piston rod 6 in the second cylinder barrel 2 can be controlled to move firstly, the first piston 3 with the throttle hole 8 can block the piston rod 6 in the first cylinder barrel 1 to move due to the damping role, the piston rod 6 of the first cylinder barrel 1 can move backwards, and therefore the action sequence of the two piston rods 6 in the double-folding oil cylinder can be controlled, and buffer disorder can not be generated.

Preferably, the piston rods 6 in the first and second cylinders 1, 2 are actuated in opposite directions.

As a preference, the cone sleeve 10 is arranged close to the first piston 3 and the second piston 7, respectively.

All fixed cover is equipped with taper sleeve 10 on two piston rods 6, when two piston rods 6 move to being close to 5 one sides of cylinder cap under the drive of first piston 3 and second piston 7 respectively, taper sleeve 10 moves to 5 one sides of cylinder cap under the drive of piston rod 6, thereby cause the effect of surely flowing and play the buffering after taper sleeve 10 gets into the cut oilhole 9 of cylinder cap 5, compare in supplementary spacing equipment such as machinery spacing and potentiometre simple structure, easily preparation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.