Mining gearbox shell with heat exchanger

Abstract

The utility model discloses a mining gearbox shell with a heat exchanger, which comprises a gearbox shell and further comprises the heat exchanger arranged on the outer side of the gearbox shell, and the heat exchanger is connected with a whole vehicle waterway radiating system. The heat exchanger is further connected with a gearbox oil outlet end lubricating oil pipe and a gearbox oil inlet end lubricating oil pipe. The gearbox oil outlet end lubricating oil pipe is connected with a gearbox shell oil outlet arranged on the gearbox shell, and the gearbox oil inlet end lubricating oil pipe is connected with a gearbox oil inlet arranged on the gearbox shell; according to the mining gearbox shell with the heat exchanger, gearbox gear oil can participate in water-cooling heat dissipation of a whole vehicle through the heat exchanger, and then the oil temperature is reduced. The structure can be used for replacing an original gearbox gear oil lubricating oil way heat dissipation structure, the gear pitting corrosion and tooth hitting fault rate caused by the too high oil temperature of a gearbox is effectively reduced, then the after-sales service cost is reduced, and the public praise of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a mining gearbox housing with a heat exchanger. Background Art

[0002] Currently, all off-road wide-body vehicles developed by various manufacturers in the domestic mining market are equipped with our mining transmissions for manual transmissions, giving us a dominant position in the market. After-sales visits and in-plant transmission temperature-rise testing have confirmed that under conditions of engine overtorque and prolonged, continuous overloaded operation in mining areas, transmission oil temperatures can reach 120-130°C. High oil temperatures reduce the kinematic viscosity of the gear oil, which in turn reduces the oil film thickness. This prevents optimal fluid lubrication between gears within the transmission, making gear pitting and galling more likely to occur.

[0003] Due to the long repair cycle of gear pitting and tooth punching failures, high single service costs, and many user complaints, it is urgent to formulate improvement measures to reduce the failure rate, thereby reducing after-sales service costs and improving user reputation. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a mining gearbox housing with a heat exchanger to solve the problem in the existing technology that the transmission oil temperature is easily too high during operation, resulting in insufficient lubrication between the internal gears of the transmission.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a mining gearbox housing with a heat exchanger, comprising a gearbox housing and a heat exchanger mounted on the outside of the gearbox housing, wherein the heat exchanger is connected to the water cooling system of the vehicle;

[0006] The heat exchanger is also connected to a gearbox oil outlet lubricating oil pipe and a gearbox oil inlet lubricating oil pipe;

[0007] The lubricating oil pipe at the oil outlet end of the gearbox is connected to the gearbox housing oil outlet port arranged on the gearbox housing, and the lubricating oil pipe at the oil inlet end of the gearbox is connected to the gearbox oil inlet port arranged on the gearbox housing;

[0008] The utility model also has the following technical features:

[0009] The heat exchanger is mounted on the outside of the gearbox housing via a heat exchanger mounting bracket;

[0010] The heat exchanger is connected to the lubricating oil pipe at the oil outlet of the gearbox via the heat exchanger oil inlet pipe joint, and the heat exchanger is connected to the lubricating oil pipe at the oil inlet of the gearbox via the heat exchanger oil outlet pipe joint;

[0011] The lubricating oil pipe at the oil outlet end of the gearbox is connected to the oil outlet of the gearbox housing through a gearbox oil outlet pipe joint;

[0012] The lubricating oil pipe at the oil inlet end of the gearbox is connected to the oil inlet port of the gearbox through the oil inlet end pipe joint of the gearbox;

[0013] The lubricating oil pipe at the oil outlet end of the gearbox and the lubricating oil pipe at the oil inlet end of the gearbox are fixed on the heat exchanger mounting bracket through lubricating oil pipe fixing clamps;

[0014] The heat exchanger is connected to the vehicle water cooling system through the heat exchanger water inlet and heat exchanger outlet installed on the top of the heat exchanger;

[0015] Compared with the prior art, the present invention has the following technical effects:

[0016] (I) This utility model provides a mining gearbox housing with a heat exchanger. The gear oil in the gearbox can be cooled by water through the heat exchanger, thereby reducing the oil temperature. This structure can be used to replace the existing gear oil lubrication circuit heat dissipation structure of the gearbox, effectively reducing the gear pitting and gear knocking failure rate caused by excessive oil temperature, thereby reducing after-sales service costs and improving user reputation.

[0017] (II) The utility model provides a mining gearbox housing with a heat exchanger, which has a simple structure, is easy to operate, safe and reliable, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a mining gearbox housing with a heat exchanger according to the present invention.

[0019] Figure 2 It is a right side structural schematic diagram of the present utility model.

[0020] Figure 3 It is a schematic diagram of the overall structure of the prior art.

[0021] The meaning of each reference numeral in the accompanying drawings:

[0022] 1-gearbox housing, 2-heat exchanger, 3-gearbox oil outlet lubricating oil pipe, 4-gearbox oil inlet lubricating oil pipe, 5-gearbox housing oil outlet, 6-gearbox oil inlet, 7-heat exchanger mounting bracket, 8-heat exchanger oil inlet pipe joint, 9-heat exchanger oil outlet pipe joint, 10-gearbox oil outlet pipe joint, 11-gearbox oil inlet end pipe joint, 12-lubricating oil pipe fixing clamp, 13-heat exchanger water inlet, 14-heat exchanger water outlet.

[0023] 15-External gear oil pump, 16-Transmission rear cover oil outlet, 17-Transmission oil outlet lubricating oil pipe assembly, 18-Transmission oil inlet lubricating oil pipe, 19-Transmission oil outlet oil filter plug, 20-Oil pump oil outlet pipe joint, 21-Transmission oil inlet pipe joint, 22-Transmission oil inlet.

[0024] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0025] Unless otherwise specified, all components in the present invention are components known in the prior art.

[0026] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the scope of protection of the present invention.

[0027] Example 1:

[0028] This embodiment provides a mining gearbox housing with a heat exchanger, such as Figure 1 and Figure 2 As shown, it includes a gearbox housing 1 and a heat exchanger 2 installed on the outside of the gearbox housing 1. The heat exchanger 2 is connected to the vehicle water cooling system;

[0029] The heat exchanger 2 is also connected to a gearbox oil outlet lubricating oil pipe 3 and a gearbox oil inlet lubricating oil pipe 4;

[0030] The gearbox oil outlet end lubricating oil pipe 3 is connected to the gearbox housing oil outlet 5 arranged on the gearbox housing 1, and the gearbox oil inlet end lubricating oil pipe 4 is connected to the gearbox oil inlet 6 arranged on the gearbox housing 1;

[0031] In this embodiment, the gearbox housing 1 includes a gearbox housing, a gearbox upper cover mounted on the gearbox housing, a clutch housing mounted on one end of the gearbox housing, and a gearbox rear cover mounted on the other end of the gearbox housing. A retarder bracket is also mounted on the gearbox rear cover. The heat exchanger 2 and the gearbox oil inlet 6 are arranged on the retarder bracket.

[0032] In this embodiment, a heat exchanger 2 is added to the rear end of the gearbox housing 1. The heat exchanger water inlet 13 and the heat exchanger water outlet 14 on the heat exchanger 2 are connected to the vehicle water cooling and heat dissipation circulation system. The gearbox oil outlet lubricating oil pipe 3 and the gearbox oil inlet lubricating oil pipe 4 on the heat exchanger 2 are connected to the gearbox housing oil outlet 5 and the gearbox oil inlet 6;

[0033] The gearbox housing 1 is newly designed with a gearbox housing oil outlet 5 and a gearbox oil inlet 6. The gearbox gear oil is connected to the heat exchanger 2 through the heat exchanger oil inlet pipe joint 8, the heat exchanger oil outlet pipe joint 9 and the gearbox oil outlet end lubricating oil pipe 3 and the gearbox oil inlet end lubricating oil pipe 4. The heat exchanger 2 dissipates the heat of the gearbox gear oil by connecting to the vehicle water cooling system, and then flows into the interior of the gearbox through the lubricating oil pipe, thereby water cooling the gear oil inside the gearbox.

[0034] This structure eliminates the existing lubrication oil circuit and external gear oil pump, optimizing the vehicle layout while reducing oil leakage. It also dissipates heat from the internal transmission oil, reducing gear pitting and gear cavitation, extending the service life of transmission gears, and improving product reliability and user reputation.

[0035] As a preferred embodiment of this invention:

[0036] The heat exchanger 2 is mounted on the outside of the gearbox housing 1 via a heat exchanger mounting bracket 7;

[0037] In this embodiment, the heat exchanger mounting bracket 7 is installed outside the retarder bracket;

[0038] The heat exchanger 2 is connected to the transmission oil outlet lubricating oil pipe 3 via the heat exchanger oil inlet pipe joint 8, and the heat exchanger 2 is connected to the transmission oil inlet lubricating oil pipe 4 via the heat exchanger oil outlet pipe joint 9;

[0039] As a preferred embodiment of this invention:

[0040] The gearbox oil outlet end lubricating oil pipe 3 is connected to the gearbox housing oil outlet 5 through the gearbox oil outlet pipe joint 10;

[0041] The transmission oil inlet end lubricating oil pipe 4 is connected to the transmission oil inlet port 6 through the transmission oil inlet end pipe joint 11;

[0042] As a preferred embodiment of this invention:

[0043] The transmission oil outlet lubricating oil pipe 3 and the transmission oil inlet lubricating oil pipe 4 are fixed to the heat exchanger mounting bracket 7 via lubricating oil pipe fixing clamps 12. In this embodiment, there are multiple lubricating oil pipe fixing clamps 12, which are installed on the heat exchanger mounting bracket 7 and the outside of the retarder bracket.

[0044] As a preferred embodiment of this invention:

[0045] The heat exchanger 2 is connected to the vehicle water cooling system through the heat exchanger water inlet 13 and the heat exchanger water outlet 14 installed on the top of the heat exchanger 2;

[0046] The specific usage of this embodiment is as follows:

[0047] The original gearbox lubricating oil circuit structure is as follows Figure 3 As shown, the gear oil inside the transmission is pumped out by an external gear oil pump 15, then enters the external gear oil pump 15 through the transmission rear cover oil outlet 16 and the transmission oil outlet lubricating oil pipe assembly 17. The oil is then pumped back into the transmission through the transmission oil inlet lubricating oil pipe 18 and the transmission oil inlet 22, thereby lubricating the gears inside the transmission. Specifically, the transmission oil outlet lubricating oil pipe assembly 17 is connected to the transmission rear cover oil outlet 16 via the transmission oil outlet oil filter plug 19; the transmission oil inlet lubricating oil pipe 18 is connected to the external gear oil pump 15 and the transmission oil inlet 22 via the oil pump outlet pipe joint 20 and the transmission oil inlet pipe joint 21, respectively. This lubrication effect is poor, and the installation of the external oil pipe takes up space, resulting in a high oil leakage rate.

[0048] This patent designs a mining gearbox lubricating oil circuit structure with a heat exchange structure, such as Figure 1 and Figure 2 As shown:

[0049] Among them: the gearbox housing oil outlet 5 and the gearbox oil outlet end lubricating oil pipe 3 are connected through the gearbox oil outlet pipe joint 10; the gearbox oil outlet end lubricating oil pipe 3 and the heat exchanger 2 are connected through the heat exchanger oil inlet pipe joint 8; the heat exchanger 2 and the gearbox oil inlet end lubricating oil pipe 4 are connected through the heat exchanger oil outlet pipe joint 9; the gearbox oil inlet end lubricating oil pipe 4 and the gearbox oil inlet 6 are connected through the gearbox oil inlet end pipe joint 11: the gearbox oil outlet end lubricating oil pipe 3 and the gearbox oil inlet end lubricating oil pipe 4 are fixed on the heat exchanger mounting bracket 7 through the lubricating oil pipe fixing pipe clamp 12: the heat exchanger water inlet 13 and the heat exchanger water outlet 14 are interfaces for connecting the heat exchanger 2 to the vehicle water cooling system.

[0050] The gear oil inside the gearbox flows out through the oil outlet 5 of the gearbox casing, and then flows into the heat exchanger 2 through the lubricating oil pipe 3 at the oil outlet end of the gearbox. After being water-cooled by the heat exchanger 2, it flows back into the gearbox through the lubricating oil pipe 4 at the oil inlet end of the gearbox and the gearbox oil inlet 6. At this time, the gear oil in the gearbox is cooled and the oil temperature is not high, thereby reducing the gear pitting and gear knocking failure rates.

[0051] The above technical solutions are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present invention without creative work are all covered by the protection scope of the present invention.

Claims

1. A mining gearbox housing with a heat exchanger, comprising a gearbox housing (1), characterized in that: It also includes a heat exchanger (2) installed on the outside of the gearbox housing (1), and the heat exchanger (2) is also connected to a gearbox oil outlet lubricating oil pipe (3) and a gearbox oil inlet lubricating oil pipe (4); The transmission oil outlet end lubricating oil pipe (3) is connected to a transmission housing oil outlet port (5) arranged on the transmission housing (1), and the transmission oil inlet end lubricating oil pipe (4) is connected to a transmission oil inlet port (6) arranged on the transmission housing (1).

2. A mining gearbox housing with a heat exchanger according to claim 1, characterized in that: The heat exchanger (2) is mounted on the outside of the gearbox housing (1) via a heat exchanger mounting bracket (7); The heat exchanger (2) is connected to the transmission oil outlet lubricating oil pipe (3) via the heat exchanger oil inlet pipe joint (8), and the heat exchanger (2) is connected to the transmission oil inlet lubricating oil pipe (4) via the heat exchanger oil outlet pipe joint (9).

3. The mining gearbox housing with a heat exchanger according to claim 1, characterized in that: The gearbox oil outlet end lubricating oil pipe (3) is connected to the gearbox housing oil outlet (5) via a gearbox oil outlet pipe joint (10); The transmission oil inlet end lubricating oil pipe (4) is connected to the transmission oil inlet port (6) via a transmission oil inlet end pipe joint (11).

4. A mining gearbox housing with a heat exchanger as claimed in claim 2, characterized in that: The transmission oil outlet end lubricating oil pipe (3) and the transmission oil inlet end lubricating oil pipe (4) are fixed on the heat exchanger mounting bracket (7) via a lubricating oil pipe fixing clamp (12).

5. The mining gearbox housing with a heat exchanger according to claim 3, characterized in that: The heat exchanger (2) is connected to the vehicle water cooling system via a heat exchanger water inlet (13) and a heat exchanger water outlet (14) installed on the top of the heat exchanger (2).

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