Efficient and rapid pushing brake cylinder

Abstract

The utility model discloses an efficient and rapid pushing brake cylinder which comprises a cylinder body and a piston rod in the cylinder body. The cylinder body is of a barrel structure with two open ends, and a front end cover and a rear end cover are arranged at the two ends of the cylinder body respectively. The center of the front end cover extends inwards to form a guide column, a first oil channel is formed in the guide column, an outlet in one end of the first oil channel is communicated with an inner cavity of the piston rod, and an outlet in the other end extends to the front end cover to form an oil injection hole. A second oil duct is arranged in the front end cover and is communicated with the oil injection hole; an outlet at the other end of the second oil duct is positioned on the front end cover between the piston rod and the cylinder body; a piston rod sleeves the outer side of the guide column, and the top of the piston rod is connected with a ball rod; a piston is arranged on the side, close to the front end cover, of the baffle. And a double-spring group is arranged between the baffle and the rear end cover. According to the utility model, the rapid movement of the piston rod can be realized through double oil ways, and meanwhile, double insurance can also be realized, so that the situation that one oil way fails and cannot realize operation is avoided, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil cylinders, in particular to an efficient and fast-pushing brake cylinder. Background Art

[0002] The brake cylinder is a key component in the brake system. It is responsible for converting the force generated when the driver steps on the brake pedal into braking force, thereby decelerating and stopping the vehicle. The performance of the brake cylinder directly affects the overall performance of the brake system.

[0003] The current traditional brake system is driven by a single oil circuit. Although this system has a simple structure, as long as any part of the system is damaged and leaks air or oil, the entire brake system will fail. At the same time, the driving force of the single oil circuit system is low, and the system response sensitivity is slightly low. Utility Model Content

[0004] The utility model aims to provide a high-efficiency and fast-pushing brake cylinder which has a quick response and a double oil circuit system.

[0005] The purpose of the utility model is achieved as follows: a high-efficiency and fast-pushing brake cylinder, comprising a cylinder body and a piston rod in the cylinder body; the cylinder body is a cylindrical structure with openings at both ends, and a front end cover and a rear end cover are respectively provided at both ends of the cylinder body; a guide column is extended inwardly from the center of the front end cover, and a first oil channel is provided in the guide column, and an outlet at one end of the first oil channel is connected to the inner cavity of the piston rod, and the outlet at the other end extends to the front end cover to form an oil filling hole; a second oil channel is provided in the front end cover and is connected to the oil filling hole, and the outlet at the other end of the second oil channel is located on the front end cover between the piston rod and the cylinder body; a piston rod is sleeved on the outer side of the guide column, and a ball head rod is connected to the top of the piston rod; a baffle is provided on the periphery of the piston rod, and a piston is provided on the side of the baffle close to the front end cover; a double spring group is provided between the baffle and the rear end cover.

[0006] Preferably, a protrusion is provided at the bottom of the piston rod, the piston is placed between the protrusion and the baffle, and a rubber layer is provided at the bottom of the protrusion.

[0007] Preferably, the baffle and the rear end cover are both provided with limiting grooves which cooperate with and fix with the double spring assembly.

[0008] Preferably, a step seal, a shaft ring, a support ring, a combined gasket and a step seal are provided in the inner cavity of the piston rod from left to right in sequence.

[0009] Preferably, a fixing step is provided on the inner side of the front end cover, a sealing gasket is provided on the contact surface between the fixing step and the cylinder body, and an O-ring is provided at the right-angle corner of the fixing step.

[0010] Preferably, a plurality of groups of combined sealing rings are provided on the periphery of the piston.

[0011] Compared with the prior art, the utility model is beneficial in that:

[0012] 1. Two sets of oil passages are set in the front cover, one set of oil passages is connected to the inner cavity of the piston rod, and the other set of oil passages is connected to the cavity between the piston rod and the cylinder body. When the hydraulic oil is injected into the oil port, the two oil passages are filled with oil at the same time, which can simultaneously apply pressure to the piston inside and outside the piston rod. The pressure on one side of the piston rod is greater, the reaction is more sensitive, and the ball head rod extends faster;

[0013] 2. Multiple sets of sealing structures are set between the outer side of the piston, the inner cavity of the piston rod, the cylinder body and the front cover, which greatly improves the overall sealing of the cylinder;

[0014] 3. The design of the dual oil circuit system ensures that even if one of the hydraulic circuits fails, the other circuit can still continue to work, thereby better ensuring the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Among them, 1 cylinder body, 2 piston rod, 201 baffle, 202 protrusion, 3 front end cover, 301 oil filling hole, 302 second oil channel, 303 fixed step, 4 rear end cover, 5 guide column, 501 first oil channel, 6 ball head rod, 7 piston, 8 double spring group, 9 rubber layer, 10 limit groove, 11 O-ring. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 As shown, an efficient and fast pushing brake cylinder comprises a cylinder body 1 and a piston rod 2 in the cylinder body. The cylinder body 1 is a cylindrical structure with openings at both ends. A front end cover 3 and a rear end cover 4 are respectively provided at both ends of the cylinder body 1; a guide column 5 is extended inward from the center of the front end cover 3, and a first oil passage 501 is provided in the guide column 5. An outlet at one end of the first oil passage 501 is connected to the inner cavity of the piston rod 2, and an outlet at the other end extends to the front end cover 3 to form an oil filling hole 301; a second oil passage 302 is provided in the front end cover 3 to be connected to the oil filling hole 301, and an outlet at the other end of the second oil passage 302 is located on the front end cover 3 between the piston rod 2 and the cylinder body 1, and the hydraulic oil in the dual oil passages acts on the piston rod at the same time, so that the piston rod moves quickly; a piston rod 2 is sleeved on the outer side of the guide column 5, and a ball head rod 6 is connected to the top of the piston rod 2; a baffle 201 is provided on the periphery of the piston rod 2, and a piston 7 is provided on the side of the baffle 201 close to the front end cover 3; a double spring group 8 is provided between the baffle 201 and the rear end cover 4, and the restoring force of the double spring group is used to provide the ball head rod with reset.

[0021] like Figure 1 As shown, a protrusion 202 is provided at the bottom of the piston rod 2, and the piston 7 is placed between the protrusion 202 and the baffle 201. A rubber layer 9 is provided at the bottom of the protrusion 201, and the rubber layer is used to avoid hard contact between the piston rod and the front end cover, thereby extending the service life of both.

[0022] like Figure 1 As shown, the baffle 201 and the rear end cover 4 are both provided with limiting grooves 10 which cooperate with the double spring group 8 to fix. The double spring group can ensure the restoring force. The provided limiting grooves can prevent the double spring group from shifting and ensure stability during operation.

[0023] like Figure 1 As shown, the inner cavity of the piston rod 2 is provided with a step seal, a shaft ring, a support ring, a combined gasket, and a step seal from left to right, which are used to ensure the sealing between the inner cavity of the piston rod and the guide column to prevent the hydraulic oil in the inner cavity from leaking out and the hydraulic oil outside the piston rod from penetrating.

[0024] like Figure 1As shown, a fixed step 303 is provided on the inner side of the front end cover 3, a sealing gasket is provided on the contact surface between the fixed step 303 and the cylinder body 1, and an O-ring 11 is provided at the right-angle corner of the fixed step. The sealing gasket and the O-ring cooperate to ensure the sealing between the front end cover and the cylinder body, further avoiding leakage of hydraulic oil.

[0025] like Figure 1 As shown, multiple groups of combined sealing rings are arranged on the periphery of the piston 7. Through the cooperation between the piston and the combined sealing rings, the sealing between the piston and the cylinder body can be greatly enhanced to avoid leakage of hydraulic oil.

[0026] The working principle of the utility model is described as follows: when in use, one group of oil passages is connected to the inner cavity of the piston rod, and the other group of oil passages is connected to the cavity between the piston rod and the cylinder body. When the oil port is injected with hydraulic oil, the two oil passages are simultaneously filled with oil, and pressure can be applied to the piston inside and outside the piston rod at the same time. The pressure on one side of the piston rod is greater, the reaction is more sensitive, and the ball head rod extends faster;

[0027] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. An efficient and fast brake cylinder, characterized in that: It includes a cylinder body and a piston rod in the cylinder body; the cylinder body is a cylindrical structure with openings at both ends, and a front cover and a rear cover are respectively provided at both ends of the cylinder body; a guide column is extended inward from the center of the front cover, and a first oil channel is provided in the guide column, and an outlet at one end of the first oil channel is connected with the inner cavity of the piston rod, and the outlet at the other end extends to the front cover to form an oil filling hole; a second oil channel is provided in the front cover and is connected with the oil filling hole, and the outlet at the other end of the second oil channel is located on the front cover between the piston rod and the cylinder body; a piston rod is sleeved on the outer side of the guide column, and a ball head rod is connected to the top of the piston rod; a baffle is provided on the periphery of the piston rod, and a piston is provided on the side of the baffle close to the front cover; a double spring group is provided between the baffle and the rear cover.

2. The high-efficiency and fast-pushing brake cylinder according to claim 1, characterized in that: A protrusion is provided at the bottom of the piston rod, the piston is placed between the protrusion and the baffle, and a rubber layer is provided at the bottom of the protrusion.

3. The high-efficiency and fast-pushing brake cylinder according to claim 1, characterized in that: The baffle plate and the rear end cover are both provided with limiting grooves which cooperate with the double spring assembly for fixing.

4. The high-efficiency and fast-pushing brake cylinder according to claim 1, characterized in that: The inner cavity of the piston rod is provided with a step seal, a shaft ring, a support ring, a combined gasket and a step seal in sequence from left to right.

5. The high-efficiency and fast-pushing brake cylinder according to claim 1, characterized in that: A fixing step is arranged on the inner side of the front end cover, a sealing gasket is arranged on the contact surface between the fixing step and the cylinder body, and an O-ring is arranged at the right-angle corner of the fixing step.

6. The high-efficiency and fast-pushing brake cylinder according to claim 1, characterized in that: A plurality of combined sealing rings are arranged on the periphery of the piston.

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