Drum type axle with liquid circulation cooling function

Abstract

A drum-type axle cooled through liquid circulation comprises an axle unit and a cooling medium circulation system, and the cooling medium circulation system circularly passes through a shaft head, a rotary sleeve, a slip ring water through hole, a hub and a brake drum in the axle, namely circularly cools a brake unit. The brake mechanism cooling system has the advantages that various problems existing in an existing brake mechanism cooling system are solved, closed circulating type cooling of cooling media is achieved, and form safety is guaranteed accordingly; particularly, the mechanical configuration structure of the cooling medium circulation system is more reasonable, the cooling medium circulation path is beneficial to improving the heat dissipation efficiency, and the influence on the strength of related parts is low.

Description

Technical Field

[0001] This utility model relates to the field of vehicle axles, and in particular to a drum-type vehicle axle with liquid circulation cooling. Background Technology

[0002] Existing drum brakes are mostly used on the drive axles of large trucks, special vehicles, and trailer axles. The brake drums and wheel hubs on the axles have poor heat dissipation performance. During braking at high speeds, a large amount of heat will accumulate. The brake shoes and brake drums are prone to deformation under the influence of high temperatures, which will lead to a decline in braking capacity, a decrease in braking efficiency, and even brake failure. Especially when driving on long downhill sections, frequent braking to control the vehicle speed is common. This operation will cause the brake drums to remain at high temperatures for a long time, and the high temperature is difficult to dissipate.

[0003] The most common solution in existing technology is to install a water spray tank, which continuously sprays water for cooling. However, under high-intensity use, spray cooling is not ideal in terms of heat dissipation, and the water used for cooling cannot be recycled and is directly discharged, increasing operating costs. In particular, water flowing onto the road makes the road surface slippery and can cause icing in winter, posing a safety hazard to other vehicles. Existing technologies also include water-cooling methods for braking systems, but these suffer from unreasonable mechanical configurations, resulting in poor heat dissipation and significantly reduced strength of the wheel hubs and brake drums.

[0004] There is currently no corresponding solution to the above situation. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a drum axle with a reasonable mechanical configuration and a liquid circulation cooling system for cooling the braking system.

[0006] The aforementioned liquid-circulating cooling drum axle includes an axle unit and a cooling medium circulation system;

[0007] The axle unit includes an axle body, the axle head of the axle body is rotatably connected to a rotating sleeve via a slip ring, and the slip ring is provided with a slip ring water passage hole; the rotating sleeve is fixedly connected to a wheel hub, and a brake drum is fixedly connected to the outside of the wheel hub;

[0008] The cooling medium circulation system includes a water tank, a water pump, a water supply pipe, and a water return pipe; the water supply pipe and the water return pipe are connected to the water tank, and a water pump is installed on the water supply pipe.

[0009] The shaft head is provided with a shaft head water inlet pipe and a shaft head water return pipe. The two ends of the shaft head water inlet pipe are a shaft head water supply hole and a second shaft head water outlet, respectively. The two ends of the shaft head water return pipe are a first shaft head water outlet and a shaft head water return outlet, respectively.

[0010] The water supply pipe is connected to the shaft head with a water supply hole.

[0011] A water supply annular groove is provided inside the rotating sleeve to encircle its shell. A second rotating sleeve water outlet and a rotating sleeve water return are also provided on both sides of the rotating sleeve. The rotating sleeve water supply annular groove and the second rotating sleeve water outlet are connected. The first rotating sleeve water outlet is connected to the rotating sleeve water return through an internal pipe of the rotating sleeve.

[0012] The rotating sleeve water supply annular groove is positioned corresponding to the water outlet of the second shaft head;

[0013] The wheel hub is provided with a wheel hub water inlet hole, a first wheel hub water outlet hole, a second wheel hub water outlet hole and a wheel hub water return hole; the wheel hub water inlet hole and the second wheel hub water outlet hole chamber are connected, and the first wheel hub water outlet hole and the wheel hub water return hole chamber are connected.

[0014] The location of the hub water inlet corresponds to the water outlet of the second rotating sleeve;

[0015] The brake drum is provided with a brake drum water inlet hole, which is connected to a semi-annular water inlet groove, which is a semi-annular channel surrounding the brake drum.

[0016] The water inlet semi-annular groove is connected to the first cooling chamber, which is composed of multiple water pipes arranged in an array inside the brake drum, and one end of each water pipe is connected to the water inlet semi-annular groove.

[0017] The other end of the first cooling chamber is connected to the annular channel of the brake drum, which is an annular channel surrounding the brake drum. The annular channel of the brake drum is connected to the second cooling chamber, which is composed of multiple arrayed water pipes arranged inside the brake drum. The second cooling chamber is positioned opposite to the first cooling chamber. That is, the first cooling chamber and the second cooling chamber are arranged around the brake drum.

[0018] The second cooling chamber is connected to a semi-annular return water groove, and the semi-annular return water groove is connected to the brake drum return water hole.

[0019] The brake drum return water hole and the wheel hub return water hole are positioned correspondingly, the first wheel hub water outlet hole and the rotating sleeve return water hole are positioned correspondingly, the first rotating sleeve water outlet hole and the axle head return water port are positioned correspondingly, and the first axle head water outlet is connected to the water tank through a return water pipe.

[0020] The effect achieved is that the water pump injects the cooling medium into the axle head water supply hole through the water supply pipe, and sequentially passes through the second axle head water outlet, the rotating sleeve water supply ring groove, the second rotating sleeve water outlet, the wheel hub water inlet, the second wheel hub water outlet, the brake drum water inlet, the water inlet semi-annular groove, and the first cooling chamber to complete the circulating cooling of one side of the axle unit.

[0021] The medium in the first cooling chamber enters the second cooling chamber through the annular channel of the brake drum, and sequentially passes through the semi-annular return water groove, the brake drum return water hole, the wheel hub return water hole, the first wheel hub outlet water hole, the first rotating sleeve outlet water hole, the axle head return water port and the first axle head outlet water port, and returns to the water tank through the return water pipe, completing the circulating cooling action on the other side of the axle unit.

[0022] The beneficial effects of this utility model are: this utility model solves a number of problems existing in the cooling system of the braking mechanism, realizes the closed-loop cooling of the cooling medium, and thus ensures the safety of the mechanism; in particular, the mechanical configuration structure of its cooling medium circulation system is more reasonable, the cooling medium circulation path is conducive to improving heat dissipation efficiency, and has little impact on the strength of related components. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a drum axle with liquid circulation cooling as described in this utility model;

[0024] Figure 2 Based on Figure 1 A schematic diagram of the partial assembly structure from a certain perspective;

[0025] Figure 3 This is a schematic diagram of the shaft head structure;

[0026] Figure 4 This is a cross-sectional structural diagram of the rotating sleeve;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the slip ring;

[0028] Figure 6 This is a cross-sectional structural diagram of the wheel hub;

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of the brake drum;

[0030] Figure 8 Based on Figure 7 A schematic diagram of the structure of the cooling cavity from a certain perspective;

[0031] Figure 9 This is a schematic diagram of the assembly structure;

[0032] Figure 10 This is a logic diagram of the control method of a drum axle for liquid circulation cooling as described in this utility model;

[0033] Figure label:

[0034] 1- Axle body 2- Axle head 3- Rotary sleeve 4- Wheel hub 5- Brake drum 6- Water tank 7- Water supply pipe 8- Water return pipe 9- Slip ring

[0035] 21-Water supply hole at the shaft head; 22-Water outlet at the first shaft head; 23-Water outlet at the second shaft head; 24-Water return port at the shaft head.

[0036] 31-Water supply ring groove of rotating sleeve; 32-Water outlet of first rotating sleeve; 33-Water outlet of second rotating sleeve; 34-Water return hole of rotating sleeve.

[0037] 41-Wheel hub water inlet hole; 42-First wheel hub water outlet hole; 43-Second wheel hub water outlet hole; 44-Wheel hub water return hole

[0038] 51-Brake drum water inlet hole; 52-Brake drum water return hole; 53-Inlet semi-annular groove; 54-Return semi-annular groove; 55-First cooling chamber; 56-Second cooling chamber; 57-Brake drum annular channel

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The present invention relates to a liquid circulation cooling drum axle, comprising an axle unit and a cooling medium circulation system.

[0041] The axle unit includes an axle body 1, the axle head 2 of the axle body 1 is rotatably connected to a rotating sleeve 3 via a slip ring 9, and the slip ring 9 is provided with a slip ring water passage hole; the rotating sleeve 3 is fixedly connected to a wheel hub 4, and a brake drum 5 is fixedly connected to the outside of the wheel hub 4;

[0042] The cooling medium circulation system includes a water tank 6, a water pump, a water supply pipe 7, and a water return pipe 8; the water supply pipe 7 and the water return pipe 8 are connected to the water tank 6, and a water pump is installed on the water supply pipe 7.

[0043] The shaft head 2 is provided with a shaft head water inlet pipe and a shaft head water return pipe. The two ends of the shaft head water inlet pipe are a shaft head water supply hole 21 and a second shaft head water outlet 23, respectively. The two ends of the shaft head water return pipe are a first shaft head water outlet 22 and a shaft head water return outlet 24, respectively.

[0044] The water supply pipe 7 is connected to the water supply hole 21 at the shaft head;

[0045] A rotating sleeve water supply annular groove 31 is provided inside the rotating sleeve 3 to encircle its shell. A second rotating sleeve water outlet 33 and a rotating sleeve water return hole 34 are also provided on both sides of the rotating sleeve 3. The rotating sleeve water supply annular groove 31 and the second rotating sleeve water outlet 33 are connected. The first rotating sleeve water outlet 32 ​​is connected to the rotating sleeve water return hole 34 through an internal pipe of the rotating sleeve 3.

[0046] The rotating sleeve water supply annular groove 31 is positioned corresponding to the second shaft head water outlet 23;

[0047] The wheel hub 4 is provided with a wheel hub water inlet hole 41, a first wheel hub water outlet hole 42, a second wheel hub water outlet hole 43 and a wheel hub water return hole 44; the wheel hub water inlet hole 41 and the second wheel hub water outlet hole 43 are connected to each other, and the first wheel hub water outlet hole 42 and the wheel hub water return hole 44 are connected to each other.

[0048] The hub water inlet 41 is positioned corresponding to the second rotating sleeve water outlet 33;

[0049] The brake drum 5 is provided with a brake drum water inlet hole 51, which is connected to a water inlet semi-annular groove 53. The water inlet semi-annular groove 53 is a semi-annular channel surrounding the brake drum 5.

[0050] The water inlet semi-annular groove 53 is connected to the first cooling chamber 55. The first cooling chamber 55 is composed of multiple water pipes arranged in an array inside the brake drum 5, and one end of each water pipe is connected to the water inlet semi-annular groove 53.

[0051] The other end of the first cooling chamber 55 is connected to the annular channel 57 of the brake drum. The annular channel 57 of the brake drum is an annular channel surrounding the brake drum 5. The annular channel 57 of the brake drum is connected to the second cooling chamber 56. The second cooling chamber 56 is composed of a plurality of water pipes arranged in an array inside the brake drum 5. Its position is opposite to that of the first cooling chamber 55. That is, the first cooling chamber 55 and the second cooling chamber 56 are arranged around the brake drum 5.

[0052] The second cooling chamber 56 is connected to the return water semi-annular groove 54, and the return water semi-annular groove 54 is connected to the brake drum return water hole 52.

[0053] The brake drum return water hole 52 is positioned corresponding to the wheel hub return water hole 44, the first wheel hub water outlet hole 42 is positioned corresponding to the rotating sleeve return water hole 34, the first rotating sleeve water outlet hole 32 is positioned corresponding to the axle head return water port 24, and the first axle head water outlet 22 is connected to the water tank 6 through the return water pipe 8.

[0054] The effect achieved is that the water pump injects the cooling medium into the axle head water supply hole 21 through the water supply pipe 7, and sequentially passes through the second axle head water outlet 23, the rotating sleeve water supply ring groove 31, the second rotating sleeve water outlet 33, the wheel hub water inlet 41, the second wheel hub water outlet 43, the brake drum water inlet 51, the water inlet semi-annular groove 53, and the first cooling chamber 55, thus completing the circulating cooling of one side of the axle unit.

[0055] The medium in the first cooling chamber 55 enters the second cooling chamber 56 through the brake drum annular channel 57, and sequentially passes through the return water semi-annular groove 54, brake drum return water hole 52, wheel hub return water hole 44, first wheel hub water outlet hole 42, first rotating sleeve water outlet hole 32, axle head return water port 24 and first axle head water outlet 22, and returns to the water tank 6 through the return water pipe 8, completing the circulating cooling action on the other side of the axle unit.

[0056] In Example 1, the first shaft head water outlet 22 and the return water pipe 8 are connected by hollow bolts; the water supply pipe 7 and the shaft head water supply hole 21 are connected by hollow bolts.

[0057] This achieves the effect of rapid assembly, higher pipeline connection strength, and longer service life.

[0058] In Example 2, the slip ring has multiple water passage holes arranged in a uniform array on the slip ring 9; mechanical seals are provided on both sides of the slip ring.

[0059] At the connection point between the rotating sleeve 3 and the hub 4, a mechanical seal is also provided between the rotating sleeve 3, the hub 4 and the axle head 2.

[0060] This ensures smooth water inlet and outlet, and prevents water from overflowing the inlet and outlet channels.

[0061] In Example 3, the water supply pipe 7 is connected to multiple water supply branches, and each water supply branch is connected to the axle unit in the vehicle.

[0062] Each axle unit is equipped with a return water branch, which is connected to the return water pipe 8.

[0063] The relevant vehicles are generally equipped with two to four drive wheels, namely two to four axle heads 2 and their corresponding rotating sleeves 3, wheel hubs 4 and brake drums 5; this equipment uses a single water pump and water tank 6 in conjunction with multiple branches to cool multiple axle units.

[0064] In Example 3, the water pump is controlled by a dual circuit of a control switch and a delay switch. The water pump control switch and the brake light switch share a control system, and the water pump control switch and the delay switch are sequentially electrically connected.

[0065] When the brake is applied, the brake light illuminates and the water pump starts; when the brake is released, the brake light goes out, and the water pump continues to run for a few seconds under the control of the delay switch before stopping.

[0066] The built-in power supply of the vehicle equipped with the drum axle is connected to the controller and alarm. The controller signal is connected to the flow monitor and the automatic flow control valve; the alarm signal is connected to the water level monitor.

[0067] The water level monitor is installed inside the water tank 6; the controller and alarm device are installed in the vehicle's cab; the flow monitor and the automatic flow control valve are integrated into one unit.

[0068] Preferably, the automatic flow control valve is installed on each water supply branch.

[0069] The effect achieved is that the water level monitor is used to detect the water level in water tank 6; when the water level in water tank 6 drops to the warning line, the water level monitor sends a signal to the alarm device, and the alarm device sounds an alarm to remind the driver to add coolant to water tank 6.

[0070] When the water pump starts, the coolant in the 7 water supply pipes begins to flow. When the flow monitor detects that the coolant flow rate in each of the 7 water supply pipes is different, it sends a signal to the controller. The controller then controls the automatic flow control valve of the terminal to open and close, so that the flow rate and pressure of the coolant in the braking and cooling assembly of each terminal are the same.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drum-type axle with liquid circulation cooling, comprising an axle unit and a cooling medium circulation system; the axle unit includes an axle body, the axle head of the axle body being rotatably connected to a rotating sleeve via a slip ring, and the slip ring having a water passage hole; the rotating sleeve is fixedly connected to a wheel hub, and a brake drum is fixedly connected to the outside of the wheel hub, characterized in that: The cooling medium circulation system includes a water tank, a water pump, a water supply pipe, and a water return pipe; the water supply pipe and the water return pipe are connected to the water tank, and a water pump is installed on the water supply pipe. The shaft head is provided with a shaft head water inlet pipe and a shaft head water return pipe. The two ends of the shaft head water inlet pipe are a shaft head water supply hole and a second shaft head water outlet, respectively. The two ends of the shaft head water return pipe are a first shaft head water outlet and a shaft head water return outlet, respectively. The water supply pipe is connected to the shaft head with a water supply hole. A water supply annular groove is provided inside the rotating sleeve to encircle its shell. A second rotating sleeve water outlet and a rotating sleeve water return are also provided on both sides of the rotating sleeve. The rotating sleeve water supply annular groove and the second rotating sleeve water outlet are connected. The first rotating sleeve water outlet is connected to the rotating sleeve water return through an internal pipe of the rotating sleeve. The rotating sleeve water supply annular groove is positioned corresponding to the water outlet of the second shaft head; The wheel hub is provided with a wheel hub water inlet hole, a first wheel hub water outlet hole, a second wheel hub water outlet hole and a wheel hub water return hole; the wheel hub water inlet hole and the second wheel hub water outlet hole chamber are connected, and the first wheel hub water outlet hole and the wheel hub water return hole chamber are connected. The location of the hub water inlet corresponds to the water outlet of the second rotating sleeve; The brake drum is provided with a brake drum water inlet hole, which is connected to a semi-annular water inlet groove, which is a semi-annular channel surrounding the brake drum. The water inlet semi-annular groove is connected to the first cooling chamber, which is composed of multiple water pipes arranged in an array inside the brake drum, and one end of each water pipe is connected to the water inlet semi-annular groove. The other end of the first cooling chamber is connected to the annular channel of the brake drum, which is an annular channel surrounding the brake drum. The annular channel of the brake drum is connected to the second cooling chamber, which is composed of multiple arrayed water pipes arranged inside the brake drum. The second cooling chamber is positioned opposite to the first cooling chamber. That is, the first cooling chamber and the second cooling chamber are arranged around the brake drum. The second cooling chamber is connected to a semi-annular return water groove, and the semi-annular return water groove is connected to the brake drum return water hole. The brake drum return water hole and the wheel hub return water hole are positioned correspondingly, the first wheel hub water outlet hole and the rotating sleeve return water hole are positioned correspondingly, the first rotating sleeve water outlet hole and the axle head return water port are positioned correspondingly, and the first axle head water outlet is connected to the water tank through a return water pipe.

2. The drum axle with liquid circulation cooling according to claim 1, characterized in that: The first shaft head water outlet and the return water pipe are connected by hollow bolts; the water supply pipe and the shaft head water supply hole are connected by hollow bolts.

3. The drum axle with liquid circulation cooling according to claim 1, characterized in that: The slip ring has multiple water passage holes, which are arranged in a uniform array on the slip ring. Mechanical seals are installed on both sides; At the connection point between the rotating sleeve and the hub, a mechanical seal is also provided between the rotating sleeve, the hub, and the axle head.

4. The drum axle with liquid circulation cooling according to claim 1, characterized in that: The water supply pipe is connected to multiple water supply branches, and each water supply branch is connected to the axle unit in the vehicle. Each axle unit is equipped with a return water branch, which is connected to the return water pipe.

5. The drum axle with liquid circulation cooling according to claim 1, characterized in that: The water pump is controlled by a dual circuit of a control switch and a delay switch. The water pump control switch and the brake light switch share a control system, and the water pump control switch and the delay switch are sequentially electrically connected. The built-in power supply of the vehicle equipped with the drum axle is connected to the controller and alarm. The controller signal is connected to the flow monitor and the automatic flow control valve; the alarm signal is connected to the water level monitor. The water level monitor is installed inside the water tank; the controller and alarm device are installed in the vehicle's cab; the flow monitor and automatic flow control valve are integrated into one unit.

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