Primary-secondary bidirectional pressure cylinder

Abstract

The utility model discloses a primary-secondary bidirectional pressure cylinder, which relates to the related field of pressure cylinders, and comprises a primary cylinder, a piston rod, an empty groove, a secondary cylinder, a flow channel, an oil seal, a rear cover, a large oil port, an auxiliary oil cylinder, a front cover, a small oil port and an auxiliary oil cylinder oil port, the piston rod is connected in the primary cylinder in a sliding manner, the empty groove is formed in the piston rod, the secondary cylinder is connected in the empty groove in a sliding manner, and the auxiliary oil cylinder oil port is formed in the front cover. A runner is arranged in the center of the interior of the secondary cylinder, oil seals are fixedly connected to the top and the bottom of the right end of the secondary cylinder, a rear cover is fixedly connected to the right end of the primary cylinder, a large oil port is formed in the top of the rear cover, an auxiliary oil cylinder is fixedly connected to the right end of the rear cover, and a front cover is fixedly connected to the left end of the primary cylinder. The pressure of the oil cylinder is increased, the walking speed of the oil cylinder is greatly increased, and then the reverse stroke is provided at the right end of the oil cylinder through the auxiliary oil cylinder, so that the bidirectional pressurization condition is achieved.

Description

Technical Field

[0001] The utility model relates to the relevant field of booster cylinders, in particular to a parent-child bidirectional booster cylinder. Background Art

[0002] The booster cylinder is an improved design combining the advantages of air cylinder and oil cylinder. The hydraulic oil is strictly isolated from the compressed air. The booster cylinder can generally be divided into pre-pressurized booster cylinder, direct-pressure booster cylinder, stroke-adjustable booster cylinder, increased return tension booster cylinder, etc. The piston rod in the cylinder automatically starts after contacting the working part. It has a fast action speed and is more stable than pneumatic transmission. The cylinder body is simple to install and the output is easy to adjust.

[0003] When the existing two-way booster cylinder is in use, it is difficult to further increase the pressure and stroke under the same conditions (pressure and capacity), resulting in a slower cylinder travel speed and difficulty in providing a reverse stroke to achieve two-way boosting, and the practicality is relatively simple. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a parent-child bidirectional booster cylinder.

[0005] The utility model is implemented in this way: a mother-child bidirectional booster cylinder is constructed, the device includes a mother cylinder, a piston rod is slidably connected in the mother cylinder, an empty groove is provided in the piston rod, a child cylinder is slidably connected in the empty groove, a flow channel is provided at the center of the child cylinder, the top and bottom of the right end of the child cylinder are fixedly connected with oil seals, the right end of the mother cylinder is fixedly connected with a rear cover, the top of the rear cover is provided with a large oil port, the right end of the rear cover is fixedly connected with an auxiliary oil cylinder, and the left end of the mother cylinder is fixedly connected with a front cover.

[0006] Preferably, a small oil port is provided on the left side of the front end of the rear cover, and an auxiliary oil cylinder oil port is provided on the right side of the front end of the rear cover.

[0007] Preferably, the piston rod passes through the left end of the front cover and is slidably connected to the interior thereof, and the outer wall of the sub-cylinder is slidably connected to the inner wall of the piston rod.

[0008] Preferably, the auxiliary oil cylinder oil ports are provided with two groups, and the center spacing between the two groups of auxiliary oil cylinder oil ports is thirty-five.

[0009] Preferably, the auxiliary oil cylinder oil port is connected to the auxiliary oil cylinder, and the small oil port is connected to the flow channel.

[0010] Preferably, the diameter of the large oil port is sixty, and the distance between the center of the small oil port and the right end of the rear cover is ninety.

[0011] The utility model has the following advantages: The utility model provides a parent-child bidirectional booster cylinder through improvement, which has the following improvements compared with the same type of equipment:

[0012] The utility model discloses a parent-child bidirectional booster cylinder, which increases the pressure of the cylinder by setting a parent cylinder and letting oil in from the parent cylinder and the child cylinder at the same time, greatly improving the travel speed of the cylinder, and then provides a reverse stroke at the right end of the cylinder through the auxiliary cylinder, thereby achieving bidirectional boosting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the main cylinder and the sub-cylinder of the utility model from the front view;

[0014] Figure 2 This is a schematic structural diagram of the rear cover and the large oil port of the utility model from the front view;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the rear cover of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the rear cover of the utility model when viewed from above;

[0017] Figure 5 This is a schematic structural diagram of the rear cover of the utility model when viewed from the front;

[0018] Among them: main cylinder-1, piston rod-2, empty groove-3, sub-cylinder-4, flow channel-5, oil seal-6, rear cover-7, large oil port-8, auxiliary oil cylinder-9, front cover-10, small oil port-11, auxiliary oil cylinder oil port-12. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 to Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] See also Figure 1 to Figure 5 The utility model is a parent-child bidirectional booster cylinder, comprising a parent cylinder 1, a piston rod 2 is slidably connected inside the parent cylinder 1, a hollow groove 3 is provided inside the piston rod 2, a child cylinder 4 is slidably connected inside the hollow groove 3, and the hollow groove 3 is convenient for limiting the movement of the child cylinder 4.

[0023] A flow channel 5 is provided at the center of the sub-cylinder 4, and oil seals 6 are fixedly connected to the top and bottom of the right end of the sub-cylinder 4. A rear cover 7 is fixedly connected to the right end of the mother cylinder 1, and the rear cover 7 is convenient for installing the large oil port 8.

[0024] A large oil port 8 is provided on the top of the rear cover 7, an auxiliary oil cylinder 9 is fixedly connected to the right end of the rear cover 7, a front cover 10 is fixedly connected to the left end of the mother cylinder 1, and a small oil port 11 is provided on the left side of the front end of the rear cover 7 for convenient transportation of external hydraulic oil.

[0025] An auxiliary cylinder oil port 12 is provided on the right side of the front end of the rear cover 7, the piston rod 2 passes through the left end of the front cover 10 and is slidably connected to the inside thereof, the outer wall of the sub-cylinder 4 is slidably connected to the inner wall of the piston rod 2, and two groups of auxiliary cylinder oil ports 12 are provided, and the center distance between the two groups of auxiliary cylinder oil ports 12 is thirty-five. The auxiliary cylinder oil port 12 facilitates the delivery of external hydraulic oil to the auxiliary cylinder 9.

[0026] The auxiliary oil cylinder oil port 12 is connected to the auxiliary oil cylinder 9, the small oil port 11 is connected to the flow channel 5, the diameter of the large oil port 8 is sixty, and the distance between the center of the small oil port 11 and the right end of the rear cover 7 is ninety.

[0027] The working principle of the above-mentioned parent-child bidirectional booster cylinder is:

[0028] When the mother cylinder 1 is in use, the external hydraulic oil is delivered to the mother cylinder 1 through the large oil port 8, so that the hydraulic oil transmits pressure between the contact surfaces and pushes the piston rod 2 to move. In this process, the hydraulic oil continuously flows from the high-pressure area to the low-pressure area, realizing the reciprocating motion of the piston rod 2. At the same time as the mother cylinder 1 is filled with oil, the external hydraulic oil is delivered to the flow channel 5 through the small oil port 11, and then the flow channel 5 drives the sub-cylinder 4 to move in the empty groove 3 through the hydraulic oil. When the sub-cylinder 4 contacts the left end of the empty groove 3, the sub-cylinder 4 pushes the piston rod 2 to move through the empty groove 3 at the same time, so that the mother cylinder 1 and the sub-cylinder 4 provide pressure at the same time, increasing the pressure of the oil cylinder and greatly improving the travel speed of the oil cylinder. At the same time, the cylinder barrels of the mother cylinder 1 and the sub-cylinder 4 are isolated by the oil seal 6 to prevent oil cross-talk, and the external hydraulic oil is delivered to the auxiliary oil cylinder 9 through the auxiliary oil cylinder oil port 12, so that the auxiliary oil cylinder 9 provides a reverse stroke at the right end of the oil cylinder, thereby achieving a two-way pressurization situation.

[0029] The utility model provides a parent-child bidirectional booster cylinder through improvement, in which a parent cylinder 1 is provided, and oil is simultaneously introduced into the parent cylinder 1 and the child cylinder 4, thereby increasing the pressure of the cylinder and greatly improving the travel speed of the cylinder, and then a reverse stroke is provided at the right end of the cylinder through the auxiliary cylinder 9, thereby achieving a bidirectional booster situation.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mother-child bidirectional booster cylinder, comprising a mother cylinder (1), a piston rod (2) slidably connected in the mother cylinder (1), a hollow groove (3) provided in the piston rod (2), a sub-cylinder (4) slidably connected in the hollow groove (3), a flow channel (5) provided at the center of the sub-cylinder (4), an oil seal (6) fixedly connected to the top and bottom of the right end of the sub-cylinder (4), a rear cover (7) fixedly connected to the right end of the mother cylinder (1), a large oil port (8) provided at the top of the rear cover (7), an auxiliary oil cylinder (9) fixedly connected to the right end of the rear cover (7), and a front cover (10) fixedly connected to the left end of the mother cylinder (1).

2. According to claim 1, a parent-child bidirectional booster cylinder is characterized in that: A small oil port (11) is provided on the left side of the front end of the rear cover (7), and an auxiliary oil cylinder oil port (12) is provided on the right side of the front end of the rear cover (7).

3. According to claim 2, a parent-child bidirectional booster cylinder is characterized in that: The piston rod (2) passes through the left end of the front cover (10) and is slidably connected to the interior thereof, and the outer wall of the sub-cylinder (4) is slidably connected to the inner wall of the piston rod (2).

4. According to claim 3, a parent-child bidirectional booster cylinder is characterized in that: The auxiliary oil cylinder oil ports (12) are provided with two groups, and the center spacing between the two groups of auxiliary oil cylinder oil ports (12) is thirty-five.

5. According to claim 4, the parent-child bidirectional booster cylinder is characterized in that: The auxiliary oil cylinder oil port (12) is connected to the auxiliary oil cylinder (9), and the small oil port (11) is connected to the flow channel (5).

6. According to claim 5, a parent-child bidirectional booster cylinder is characterized in that: The diameter of the large oil port (8) is sixty, and the distance between the center of the small oil port (11) and the right end of the rear cover (7) is ninety.

Images