A hydraulic retarder top cover

Abstract

The present invention belongs to the technical field of hydraulic retarders, and particularly relates to a hydraulic retarder top cover, including a top cover body, the top cover body is provided with a mounting hole matched with a hydraulic retarder housing, the top cover body is provided with a top cover refueling port, a control valve mounting threaded hole, an air inlet, a top cover exhaust hole and a float chamber exhaust passage, and one end of the float chamber exhaust passage is connected to the top cover exhaust hole. The present invention has a simple structure, does not require high casting or processing technology, greatly reduces processing costs, and improves production efficiency; does not require high installation space, so that when the hydraulic retarder is installed on a vehicle, it will not interfere with the components on the vehicle.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic retarders, and in particular relates to a hydraulic retarder top cover. Background Art

[0002] The hydraulic retarder is an auxiliary braking device for motor vehicles, mainly composed of a stator impeller, a rotor impeller, a retarder housing, a working chamber, a heat exchanger and an oil tank. It is essentially a rotary damping device that uses the rotor impeller to drive the working fluid to impact the stator impeller, generating a reverse vortex torque, converting the vehicle's kinetic energy into the heat energy of the working fluid, thereby slowing down the vehicle. Driven by the rotor impeller, the working fluid in the working chamber passes through the retarder oil outlet and enters the heat exchanger for oil-water heat exchange, and then flows back to the working chamber from the oil inlet, so that the heat energy of the working fluid is taken away by the cooling water from the engine cooling system through the heat exchanger.

[0003] The existing hydraulic retarder top cover has a complex structure and is inconvenient to install. Summary of the invention

[0004] In order to solve the above-mentioned problems, the object of the present invention is to provide a hydraulic retarder top cover which has a simple structure and is easy to install.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: to provide a hydraulic retarder top cover, including a top cover body, on which is provided a mounting hole matching the hydraulic retarder housing, and on which is provided a control valve mounting threaded hole, an air inlet hole and a float chamber exhaust duct.

[0006] Preferably, the control valve mounting threaded hole is arranged on the upper side of the top cover body.

[0007] Preferably, the number of the control valve mounting threaded holes is at least three.

[0008] Preferably, the air inlet hole comprises a main air inlet hole and at least one dispersed air inlet hole, the main air inlet hole is arranged in the middle of the top cover body, the dispersed air inlet holes penetrate both sides of the top cover body, and the main air inlet hole is not parallel to the dispersed air inlet holes.

[0009] Preferably, a muffler and a filter are installed in the main air inlet.

[0010] Preferably, two continuous arc-shaped protrusions are provided on the upper side of the top cover body, and the two arc-shaped protrusions form a wavy outer contour on the upper side of the top cover body for facilitating the installation of a proportional valve.

[0011] The beneficial effects of the present invention are:

[0012] 1. The top cover has a simple structure and does not require high casting or processing technology, which greatly reduces processing costs and improves production efficiency; it does not require high installation space, so that when the hydraulic retarder is installed on the vehicle, it will not interfere with the components on the vehicle.

[0013] 2. The top cover is provided with a number of dispersed air inlet holes which are not parallel to the air inlet holes, so that the hydraulic retarder no longer faces the working fluid in the tank when taking in air, thereby preventing the working fluid in the tank from foaming, eliminating the exhaust oil spray failure of the hydraulic retarder, reducing pollution to the environment, and greatly reducing the after-sales service cost of the hydraulic retarder; the slight bubbles generated by the working fluid will not be discharged to the outside with the gas, reducing pollution to the environment, and greatly reducing the after-sales service cost of the hydraulic retarder.

[0014] 3. A muffler is installed on the top cover to reduce the noise during the intake or exhaust of the hydraulic retarder and reduce noise pollution; a filter is installed on the top cover to reduce the impurities entering the oil tank and extend the service life of the working fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front schematic diagram of the hydraulic retarder top cover of the present invention.

[0016] Figure 2 It is a schematic diagram of the back side of the top cover of the hydraulic retarder of the present invention.

[0017] Figure 3 yes Figure 2 Schematic diagram of the cross section of AA.

[0018] Figure 4 It is a side schematic diagram of the top cover of the hydraulic retarder of the present invention.

[0019] Figure 5 It is a schematic diagram of the assembly of the top cover of the hydraulic retarder of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] See also Figures 1 to 4As shown, this embodiment provides a hydraulic retarder top cover, including a top cover body 1, the top cover body 1 is provided with a mounting hole matched with the hydraulic retarder housing, characterized in that the top cover body 1 is provided with a top cover refueling port 11, a control valve mounting threaded hole 12, an air inlet, a top cover exhaust hole 14 and a float chamber exhaust passage 15, and one end of the float chamber exhaust passage 15 is connected to the top cover exhaust hole 14. The top cover refueling port 11 is arranged on the left side of the top cover body 1. The control valve mounting threaded hole 12 is arranged on the upper side of the top cover body 1. The number of the control valve mounting threaded holes 12 is at least three. The air inlet includes a main air inlet 13 and at least one dispersed air inlet 131, the main air inlet 13 is arranged in the middle of the top cover body 1, the dispersed air inlet 131 runs through both sides of the top cover body 1, and the main air inlet 13 is not parallel to the dispersed air inlet 131.

[0022] The dispersed air inlet holes 131 can be realized by casting or machining.

[0023] The main air inlet 13 is provided with a muffler 6 and a filter.

[0024] The top cover refueling port is provided with a plug 5 .

[0025] Two continuous arc-shaped protrusions 16 are provided on the upper side of the top cover body, and the two arc-shaped protrusions 16 form a wavy outer contour on the upper side of the top cover body for facilitating the installation of a proportional valve.

[0026] See also Figure 5 As shown, the top cover body 1 is installed on the top of the retarder housing 1 and locked by bolts; after installing the plug 5, the muffler and the filter 6 on the top cover body 1, the proportional valve air inlet 21 is installed in the main air inlet hole 13 of the top cover 1, sealed by the O-ring 8, and then locked by bolts. The exhaust port of the proportional valve 2 is connected to the exhaust hole 14 of the top cover through the exhaust pipe 3, the exhaust port of the proportional valve 2 is connected to the exhaust pipe 3 through the joint bolt 4, and the top cover 1 is connected to the exhaust pipe 3 through the joint bolt 4.

[0027] When the hydraulic retarder starts to work, the pressurized gas enters the main air inlet 13 of the top cover 1 from the proportional valve air inlet 21, and after being silenced and filtered by the muffler and filter 6, enters the oil tank of the retarder housing 7 through the dispersed air inlet 131, and pressurizes the working pressure into the working chamber, and the hydraulic retarder starts to work.

[0028] When the hydraulic retarder stops working, the pressurized gas returns to the dispersed air inlet 131 from the oil tank of the retarder housing 7, returns to the main air inlet 13 after being silenced by the muffler and the filter 6, and then returns to the proportional valve air inlet 21, and then is discharged from the exhaust port of the proportional valve 2 through the exhaust pipe 3, the joint bolts and the top cover exhaust hole 14 to the exhaust buffer chamber 71 of the retarder housing, and finally the gas is discharged to the outside, and the hydraulic retarder stops working.

[0029] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A hydraulic retarder top cover, comprising a top cover body, the top cover body is provided with a mounting hole matched with a hydraulic retarder housing, a control valve mounting threaded hole, and an air inlet hole, characterized in that: It also includes a float chamber exhaust duct and a top cover exhaust hole, one end of the float chamber exhaust duct is connected to the top cover exhaust hole, a top cover refueling port is provided on the top cover body, the top cover refueling port is arranged on the left side of the top cover body, a plug is installed on the top cover refueling port, two continuous arc-shaped protrusions are provided on the upper side of the top cover body, and the two arc-shaped protrusions form a wavy outer contour on the upper side of the top cover body for easy installation of the proportional valve; the air inlet hole includes a main air inlet hole and at least one dispersed air inlet hole, the main air inlet hole is arranged in the middle of the top cover body, the dispersed air inlet holes run through both sides of the top cover body, the main air inlet hole is not parallel to the dispersed air inlet hole, so that the hydraulic retarder no longer faces the working fluid in the fuel tank when taking in air, thereby not blowing foam into the working fluid in the fuel tank; a muffler and a filter are installed in the main air inlet hole.

2. The hydraulic retarder top cover according to claim 1, characterized in that: The top cover body is installed on the top of the retarder housing and locked by bolts; after the plug, silencer and filter are installed on the top cover body, the proportional valve air inlet is installed in the main air inlet hole of the top cover, sealed by an O-ring, and then locked by bolts; the proportional valve exhaust port is connected to the top cover exhaust hole through an exhaust pipe, the proportional valve exhaust port is connected to the exhaust pipe through a joint bolt, and the top cover body is connected to the exhaust pipe through a joint bolt; When the hydraulic retarder starts to work, the pressurized gas enters the main air inlet hole of the top cover from the air inlet of the proportional valve, and after being silenced and filtered by the muffler and filter, it enters the oil tank of the retarder housing through the dispersed air inlet hole, and pressurizes the working pressure into the working chamber, and the hydraulic retarder starts to work; When the hydraulic retarder stops working, the pressurized gas returns to the dispersed air inlet from the oil tank of the retarder housing, returns to the main air inlet after being silenced by the muffler and filter, and then returns to the proportional valve air inlet. It is then discharged from the proportional valve exhaust port through the exhaust pipe, joint bolts and top cover exhaust hole to the exhaust buffer chamber of the retarder housing, and finally the gas is discharged to the outside, and the hydraulic retarder stops working.

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