Silencer cover for hydraulic retarder

Abstract

The utility model provides a silencer cover for a hydraulic retarder, and belongs to the technical field of hydraulic retarders. The silencer comprises a silencer cover, a middle cover and two silencer holes, the two silencer holes are distributed in the middle cover up and down, two positioning bosses are fixedly arranged in the silencer cover, positioning and matching are formed between the positioning bosses and the silencer holes, two guide plates are fixedly connected between the periphery of each positioning boss and the silencer cover, and the two guide plates are fixedly connected between the middle cover and the silencer cover. An exhaust port is formed in the silencer cover, the silencer cover and the middle cover are installed and connected through a screw, a silencer cover hole sleeve is arranged between the screw and the silencer cover, and an installation groove for installing the silencer cover hole sleeve is formed in the outer side of the silencer cover; the silencer cover for the hydraulic retarder has the functions of preventing water from entering and guiding mist gas to be discharged, has the advantages of being simple in structure and convenient to install, and can improve the performance and reliability of the hydraulic retarder and reduce the manufacturing and installing cost and workload at the same time.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic retarders, in particular to a muffler cover for a hydraulic retarder. Background Art

[0002] A hydraulic retarder is a mechanical device used to brake and slow down a vehicle. It uses the damping effect of liquid to achieve the purpose of slowly controlling the vehicle speed. The design principle of the hydraulic retarder is based on the flow resistance and damping of liquid. Liquid will produce a certain amount of friction and fluid resistance during the flow process. This resistance can be used to slow down the vehicle speed and achieve a deceleration effect.

[0003] At present, the hydraulic retarder does not have a muffler cover at the exhaust gas circuit terminal. The main disadvantages are as follows: when the vehicle enters a wading road or a puddle, the wheels will throw water to the retarder. The exhaust gas circuit terminal of the retarder is equipped with a muffler, and the muffler is connected to the gas circuit through many holes. Therefore, water will enter the exhaust gas circuit through the muffler, and enter the retarder oil storage chamber through the exhaust gas circuit, causing oil emulsification, resulting in oil spraying from the retarder and poor braking effect. In addition, during the working process of the hydraulic retarder, it is mainly controlled by compressed air to pump the working medium oil into the working In the cavity, the resistance of the oil has the effect of slowing down the transmission shaft, and in this process, the working medium oil temperature increases due to friction, forming mist oil. When the retarder is closed, the compressed air in the oil cavity will be discharged, taking away part of the mist oil. After long-term use, it will be sprayed out through the muffler at the terminal of the exhaust gas path, causing oil accumulation, making the surface of the retarder and the surface of the front gearbox oil. In addition, the dust in the air adheres to the surface oil, making it very difficult to clean and visually appearing very dirty.

[0004] How to invent a muffler cover for a hydraulic retarder to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a muffler cover for a hydraulic retarder, aiming to improve the problems mentioned in the above background.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a muffler cover for a hydraulic retarder, comprising a muffler cover, a middle cover and a muffler hole, wherein the number of the muffler holes is two and they are arranged on the middle cover in an upper and lower manner, the muffler cover is fixedly provided with two positioning bosses, the positioning bosses are positioned and matched with the muffler holes, two guide plates are fixedly connected around each of the positioning bosses and the muffler cover, the muffler cover is provided with an exhaust port, the muffler cover is installed and connected to the middle cover by screws, a muffler cover hole sleeve is arranged between the screws and the muffler cover, an installation groove for installing the muffler cover hole sleeve is arranged on the outer side of the muffler cover, the upper end face of the muffler cover is inclined, and the lower end of the outer wall of the muffler cover is inclined inwardly step by step.

[0008] Preferably, the muffler cover hole sleeve is made of metal material, and the muffler cover hole sleeve is in the shape of a T-ring cylinder.

[0009] Preferably, a threaded groove matching the screw is provided on the middle cover corresponding to the mounting groove, and the lower port of the muffler cover matches the edge of the middle cover.

[0010] Preferably, the exhaust port is located below the muffler cover and there is only one exhaust port.

[0011] Preferably, there is a gap between the two positioning bosses, and the guide plate and the positioning bosses have the same height.

[0012] Preferably, the guide plates are arranged in an inwardly concave arc shape, and the guide plates at the same positioning boss are symmetrically distributed up and down along the central axis of the positioning boss.

[0013] The beneficial effects of the utility model are:

[0014] A muffler cover is provided on the existing muffler hole. The muffler cover has two positioning bosses that form positioning and cooperation with the muffler hole on the middle cover. After the muffler cover is installed on the middle cover, only the lower opening of the muffler cover is used for exhaust. The muffler cover and the middle cover are tightened by screws. A muffler cover hole sleeve is provided between the screws and the muffler cover. The muffler cover hole sleeve is made of metal material to prevent the muffler cover from being deformed by being pressed by the screws. The muffler cover hole sleeve is installed in the installation groove of the muffler cover. The muffler cover can effectively prevent the water that impacts the vehicle from directly entering the retarder cavity through the muffler hole when wading. At the same time, the mist oil carried by the hydraulic retarder during exhaust will not spread to the surrounding area, and will be blocked by the muffler cover and finally discharged to the ground.

[0015] The fitting clearance between the positioning boss of the muffler cover and the middle cover is small, which helps to prevent water from entering the muffler cover and can guide the discharge of mist gas, which can effectively protect the hydraulic retarder and related equipment from the influence of water and mist liquid, and can protect the surface of the gearbox and retarder from oil contamination, which helps to maintain their cleanliness and normal operation. The muffler cover hole sleeve is embedded in the muffler cover. This design can make the muffler cover hole sleeve tightly connected with the muffler cover and ensure stable installation. The embedded design of the muffler cover hole sleeve helps to provide additional structural strength and stability; the structural design of the muffler cover for this hydraulic retarder is relatively simple, which makes the installation process more convenient and quick, reduces the complexity of manufacturing and installation, and improves production efficiency and ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the installation structure of a muffler cover for a hydraulic retarder provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the enlarged structure of a muffler cover A for a hydraulic retarder provided by an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the explosion structure of a muffler cover for a hydraulic retarder provided by an embodiment of the utility model;

[0020] Figure 4 The utility model provides a muffler cover for a hydraulic retarder and a schematic diagram of the internal structure of the muffler cover.

[0021] In the figure: 1, muffler cover; 101, mounting groove; 2, positioning boss; 3, exhaust port; 4, middle cover; 401, muffler hole; 5, screw; 6, muffler cover hole sleeve; 7, guide plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] Reference Figure 1-3 A muffler cover for a hydraulic retarder comprises a muffler cover 1, a middle cover 4 and a muffler hole 401. There are two muffler holes 401 arranged on the middle cover 4 in an upper and lower manner. Two positioning bosses 2 are fixedly provided in the muffler cover 1. Positioning and cooperation are formed between the positioning bosses 2 and the muffler holes 401 to ensure that the muffler cover 1 can completely cover the two muffler holes 401. Two guide plates 7 are fixedly connected around each positioning boss 2 and between the muffler cover 1. An exhaust port 3 is provided on the muffler cover 1 to enable airflow to be effectively discharged from the retarder. The muffler cover 1 and the middle cover 4 are installed and connected by screws 5. A muffler cover hole sleeve 6 is provided between the screws 5 and the muffler cover 1. An installation groove 101 for installing the muffler cover hole sleeve 6 is provided on the outer side of the muffler cover 1.

[0025] It should be noted that: the upper end surface of the muffler cover 1 is inclined, so that rainwater and splashing water can flow down quickly, avoiding water from directly entering the muffler hole 401. Such a design helps to protect the normal operation of the muffler and reduce the possibility of water entering the retarder. The lower end of the outer wall of the muffler cover 1 is gradually inclined inward, which is equivalent to reducing the outlet outer diameter of the muffler cover 1, helping to increase the flow rate of the exhaust fluid and reduce noise to a certain extent. Through the setting of the muffler cover 1, it can be prevented that the impacted water when the vehicle wades directly enters the retarder cavity through the muffler hole 401;

[0026] Reference Figure 3-4 The muffler cover hole sleeve 6 is made of metal material to prevent the muffler cover 1 from being deformed by the screw 5. The muffler cover hole sleeve 6 is set in a T-shaped ring tube shape to ensure that the muffler cover 1 can be effectively protected. A threaded groove matching the screw 5 is provided on the middle cover 4 corresponding to the mounting groove 101. The lower port of the muffler cover 1 matches the edge of the middle cover 4. There is a gap between the two positioning bosses 2, which ensures that the mist oil carried by the muffler hole 401 during exhaust can be discharged along the gap. The guide plate 7 is equal to the height of the positioning boss 2, which ensures the sealing between the muffler cover 1 and the middle cover 4;

[0027] It should be noted that: the exhaust port 3 is located below the muffler cover 1 and there is only one, which is used to guide the gas to prevent the mist oil carried away by the hydraulic retarder when exhausting from contaminating the gearbox and the retarder housing surface, and is blocked by the muffler cover 1 and finally discharged to the ground. The guide plate 7 is a concave arc setting. The guide plates 7 at the same positioning boss 2 are symmetrically distributed along the central axis of the positioning boss 2, which helps to guide the exhausted gas to flow along an appropriate path and prevent liquid oil mist from splashing onto the gearbox and retarder housing surface. Such a design can protect the surface of the gearbox and retarder from oil contamination, and help maintain their cleanliness and normal operation.

[0028] The working principle of the muffler cover for the hydraulic retarder is as follows: a muffler cover 1 is provided on the existing muffler hole 401, and the muffler cover 1 has two positioning bosses 2 that form positioning and cooperation with the muffler hole 401 on the middle cover 4. After the muffler cover 1 is installed on the middle cover 4, the muffler cover 1 has only a lower opening for exhaust. The muffler cover 1 and the middle cover 4 are tightened by screws 5. A muffler cover hole sleeve 6 is provided between the screws 5 and the muffler cover 1. The muffler cover hole sleeve 6 is made of metal material and can prevent the muffler cover 1 from being compressed and deformed by the screws 5. The muffler cover hole sleeve 6 is installed in the installation groove 101 of the muffler cover 1. The muffler cover 1 can effectively prevent the water that impacts the vehicle from directly entering the retarder cavity through the muffler hole 401 when wading. At the same time, the mist oil carried by the hydraulic retarder during exhaust will not spread to the surrounding area, and will be blocked by the muffler cover 1 and finally discharged toward the ground.

[0029] The fitting clearance between the positioning boss 2 of the muffler cover 1 and the middle cover 4 is small, which helps to prevent water from entering the muffler cover 1 and can guide the discharge of mist gas, which can effectively protect the hydraulic retarder and related equipment from the influence of water and mist liquid, and can protect the surface of the gearbox and retarder from oil contamination, which helps to maintain their cleanliness and normal operation. The muffler cover hole sleeve 6 is embedded in the muffler cover 1. This design can make the muffler cover hole sleeve 6 tightly connected with the muffler cover 1 and ensure stable installation. The embedded design of the muffler cover hole sleeve 6 helps to provide additional structural strength and stability; the structural design of the muffler cover for this hydraulic retarder is relatively simple, which makes the installation process more convenient and quick, reduces the complexity of manufacturing and installation, and improves production efficiency and ease of use.

[0030] Based on the above information, the design of the muffler cover for the hydraulic retarder has the functions of preventing water from entering and guiding the discharge of mist gas, and has the advantages of simple structure and easy installation. These features can improve the performance and reliability of the hydraulic retarder while reducing the cost and workload of manufacturing and installation.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0032] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A muffler cover for a hydraulic retarder, comprising a muffler cover (1), a middle cover (4) and a muffler hole (401), characterized in that: There are two muffler holes (401) arranged in the middle cover (4) in an upper and lower arrangement. Two positioning bosses (2) are fixedly provided in the muffler cover (1). Positioning and matching are formed between the positioning bosses (2) and the muffler holes (401). Two guide plates (7) are fixedly connected around each positioning boss (2) and between the muffler cover (1). An exhaust port (3) is provided on the muffler cover (1). The muffler cover (1) is connected to the middle cover (4) by screws (5). A muffler cover hole sleeve (6) is provided between the screws (5) and the muffler cover (1). An installation groove (101) for installing the muffler cover hole sleeve (6) is provided on the outer side of the muffler cover (1). The upper end surface of the muffler cover (1) is inclined, and the lower end of the outer wall of the muffler cover (1) is inclined inward step by step.

2. A muffler cover for a hydraulic retarder according to claim 1, characterized in that: The muffler cover hole sleeve (6) is made of metal material and is in the shape of a T-shaped ring tube.

3. A muffler cover for a hydraulic retarder according to claim 1, characterized in that: A threaded groove matching the screw (5) is provided on the middle cover (4) at a position corresponding to the mounting groove (101), and the lower port of the muffler cover (1) matches the edge of the middle cover (4).

4. A muffler cover for a hydraulic retarder according to claim 1, characterized in that: The exhaust port (3) is located below the muffler cover (1) and there is only one exhaust port (3).

5. A muffler cover for a hydraulic retarder according to claim 1, characterized in that: There is a gap between the two positioning bosses (2), and the guide plate (7) and the positioning bosses (2) are at the same height.

6. A muffler cover for a hydraulic retarder according to claim 1, characterized in that: The guide plates (7) are arranged in an inwardly concave arc shape, and the guide plates (7) at the same positioning boss (2) are symmetrically distributed up and down along the central axis of the positioning boss (2).

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