Hydraulic and static pressure dual-mode transmission traction locomotive

Abstract

According to the hydraulic and static pressure dual-mode transmission traction locomotive, an air compressor assembly and the fan end of a power engine assembly are in transmission connection through a belt and are driven, and the air compressor assembly is connected with a braking main air bag through an air pipeline; the power speed change reversing box is connected with the hydraulic torque converter assembly through a universal joint transmission shaft and a hydraulic oil pipe, two output shafts of the power speed change reversing box are connected with input shafts of the front walking wheel pair and the rear walking wheel pair through universal joint transmission shafts, and the power engine assembly is coaxially connected with a main shaft of the hydraulic torque converter assembly. The duplicate gear driving pump assembly is connected with a power output port of the hydraulic torque converter assembly through a spline shaft and a bolt, and the duplicate gear driving pump assembly is connected with the static pressure walking hydraulic oil tank and the hydraulic heat dissipation assembly through hydraulic oil pipes.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway engineering vehicles, and in particular relates to a hydrostatic dual-mode transmission traction locomotive. Background Art

[0002] The continuous development of my country's railway transportation is placing higher demands on the functionality of railway-specific vehicles for metallurgy, steel enterprises, ports, logistics, and other sectors. Traditional hydraulic traction locomotives are complex to implement low-speed traction control, suffer from numerous system vulnerabilities, and exhibit poor overall vehicle system performance. Existing hydrostatic traction vehicles also have significant limitations in medium-speed transport and traction conditions. Therefore, after extensive research and market research, it became clear that a hydrostatic dual-mode transmission traction locomotive would be suitable for small and medium-sized enterprises, with a simple structure and low cost, and meet the requirements of individual units. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a hydrostatic dual-mode transmission traction locomotive, which adopts a hydrostatic dual-mode drive mode formed by a drive structure in which a power speed change reversing box connected to the front running wheel pair and the rear running wheel pair is connected to a power engine assembly through a hydraulic torque converter assembly, and a drive structure in which a double gear drive pump assembly is connected to the front running wheel pair, so as to meet the requirements of low constant speed traction conditions of hydraulic drive locomotives and medium speed traction conditions of hydrostatic running, solves the problem that existing hydraulic drive locomotives cannot achieve the traction requirements of low and medium speed traction conditions and medium speed traction conditions of hydrostatic running, and eliminates the disadvantage that hydrostatic running tractors have large restrictions in medium speed carrying and traction conditions. It has a simple structure, novel design, and flexible vehicle layout, and is particularly suitable for medium speed carrying and traction conditions and low constant speed traction conditions.

[0004] The technical solution adopted by the utility model is as follows: a hydrostatic dual-mode transmission traction locomotive, comprising a frame and a front running wheel pair, a rear running wheel pair, an air compressor assembly, a fuel tank and a brake air bag arranged at the bottom of the frame; a driver's cab and a machine room are arranged on the upper platform of the frame from front to back, and a hydrostatic running hydraulic oil tank, a power speed change reversing box, a hydraulic heat dissipation assembly, a double gear drive pump assembly, a hydraulic torque converter assembly and a power engine assembly are arranged inside the machine room; the air compressor assembly is connected and driven by the fan end of the power engine assembly through a belt drive, and the air compressor assembly is connected to the brake The main air bag is connected through an air pipeline; the power transmission reversing box is connected to the torque converter assembly through a universal joint drive shaft and a hydraulic oil pipe, and the two output shafts of the power transmission reversing box are connected to the input shafts of the front running wheel pair and the rear running wheel pair through a universal joint drive shaft, the power engine assembly is coaxially connected to the main shaft of the torque converter assembly, the double gear drive pump assembly is connected to the power output port of the torque converter assembly through a spline shaft and bolts, and the double gear drive pump assembly is connected to the static pressure running hydraulic oil tank and the hydraulic heat dissipation assembly through a hydraulic oil pipe, and the double gear drive pump assembly is connected to the front running wheel pair.

[0005] Among them, the front running wheelset includes an axle, a wheel installed on the end of the axle, an axle box assembly and a hydrostatic running drive hydraulic motor; hydrostatic running drive hydraulic motors are provided on the mounting seats on both sides of the frame, and the hydrostatic running drive hydraulic motors are connected to the end of the axle through bolts, and a pressure feedback sensor for hydraulic control is provided on the hydrostatic running drive hydraulic motor at one end.

[0006] Furthermore, the driving hydraulic motor adopts a vertical variable motor.

[0007] Furthermore, the driving hydraulic motor is connected to the double gear drive pump assembly through a traction module and a motor control valve group.

[0008] Furthermore, the hydraulic heat dissipation assembly adopts an aluminum composite radiator, and the aluminum composite radiator dissipates heat for the hydraulic drive oil and the hydrostatic drive oil.

[0009] Furthermore, the double gear driven pump assembly adopts a bidirectional variable displacement pump.

[0010] Furthermore, a locomotive master control driver operating console system is provided in the driver's cab.

[0011] The advantages of this utility model compared with the prior art are:

[0012] 1. This technical solution adopts a hydrostatic dual-mode drive system, which is formed by a drive structure in which a power transmission reversing box connected to the front and rear running wheelsets is connected to the power engine assembly via a hydraulic torque converter assembly, and a drive structure in which a dual-gear drive pump assembly is connected to the front running wheelset. This system meets the requirements of low-constant-speed traction conditions and hydrostatic medium-speed traction conditions for hydraulically driven locomotives, solving the problem that existing hydraulically driven locomotives cannot achieve low- and medium-speed traction conditions and hydrostatic medium-speed traction conditions, and eliminates the disadvantage of hydrostatic tractors that have significant limitations in medium-speed carrying and traction conditions.

[0013] 2. This technical solution has a simple structure, novel design, flexible and reasonable vehicle layout, and a wide range of uses for the traction locomotive under dual-operating conditions. It is particularly suitable for medium-speed transportation and traction conditions as well as low-constant-speed traction conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a structural diagram of one end of the front running wheelset of the utility model. DETAILED DESCRIPTION

[0016] The following is a combination of the embodiments of the present invention Figure 1-2 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0019] Hydrostatic dual-mode transmission traction locomotive, such as Figure 1 As shown, it includes a vehicle frame 1 and a front running wheel pair 3, a rear running wheel pair 2, an air compressor assembly 4, a fuel tank 5 and a brake air bag 6 arranged at the bottom of the vehicle frame 1. A driver's cab 7 and a machine room 9 are arranged on the upper platform of the vehicle frame 1 from front to back, and a static pressure running hydraulic oil tank 8, a power transmission reversing box 10, a hydraulic heat dissipation assembly 11, a double gear drive pump assembly 13, a torque converter assembly 14 and a power engine assembly 12 are arranged inside the machine room 9; the air compressor assembly 4, a fuel tank 5 and a brake air bag 6 are arranged on the upper platform of the vehicle frame 1 from front to back. The compressor assembly 4 is connected to the fan end of the power engine assembly 12 through a belt drive and is driven, and the air compressor assembly 4 is connected to the brake main air bag 6 through an air pipeline; the power transmission reversing box 10 is connected to the torque converter assembly 14 through a universal joint drive shaft and a hydraulic oil pipe, and the two output shafts of the power transmission reversing box 10 are connected to the input shafts of the front running wheel pair 3 and the rear running wheel pair 2 through a universal joint drive shaft, and the power engine assembly 12 is connected to the torque converter assembly 1 4 main shafts are coaxially connected, the double gear drive pump assembly 13 is connected to the power output port of the hydraulic torque converter assembly 14 through a spline shaft and bolts, and the double gear drive pump assembly 13 is connected to the static pressure running hydraulic oil tank 8 and the hydraulic heat dissipation assembly 11 through a hydraulic oil pipe, and the double gear drive pump assembly 13 is connected to the front running wheel pair 3; in the above structure, the power transmission reversing box 10 connected to the front running wheel pair 3 and the rear running wheel pair 2 is connected to the power through the hydraulic torque converter assembly 14. The hydrostatic dual-mode drive system formed by the drive structure connected to the engine assembly 12 and the drive structure connected to the double gear drive pump assembly 13 and the front running wheel set 3 meets the requirements of the low constant speed traction condition of the hydraulic drive locomotive and the medium speed traction condition of hydrostatic running. This solves the problem that the existing hydraulic drive locomotive cannot meet the traction requirements of low and medium speed traction conditions and hydrostatic running medium speed traction conditions, and eliminates the disadvantage that hydrostatic running tractors have significant limitations in medium speed carrying and traction conditions.

[0020] like Figure 2As shown, the front running wheel pair 3 includes an axle 3-2, a wheel 3-1 installed at the end of the axle 3-2, an axle box assembly 3-3 and a hydrostatic running drive hydraulic motor 3-4; a hydrostatic running drive hydraulic motor 3-4 is provided on the mounting seats on both sides of the frame 1, and the hydrostatic running drive hydraulic motor 3-4 is connected to the end of the axle 3-2 by bolts, and a pressure feedback sensor for hydraulic control is provided on the hydrostatic running drive hydraulic motor 3-4 at one end; specifically, the driving hydraulic motor 3-4 adopts a vertical variable motor; specifically, the driving hydraulic motor 3-4 is connected to the double gear drive pump assembly 13 through the traction module and the motor control valve group. When it is necessary to switch to the hydrostatic driving working condition, the double gear drive pump assembly 13 drives the driving hydraulic motor 3-4 to work under the control of the traction module and the motor control valve group.

[0021] Among them, the hydraulic heat dissipation assembly 11 adopts an aluminum composite radiator, and the aluminum composite radiator dissipates heat for the hydraulic drive oil and the hydrostatic drive oil; specifically, the double gear drive pump assembly 13 adopts a bidirectional variable pump; specifically, a locomotive main control driver console system is provided in the driver's cab 7.

[0022] The hydrostatic drive system adopts a closed system. The driving process in the hydraulic drive mode is as follows: the power engine assembly 12 is used as the power source output, which is directly connected to drive the torque converter assembly 14. The torque converter assembly 14 controls the power transmission reversing box 10 through the hydraulic oil pipe and the universal joint drive shaft. The power transmission reversing box 10 transmits power to the front running wheel set 3 and the rear running wheel set 2 through the universal joint, realizing the hydraulic drive of the entire vehicle. The process of using the hydrostatic drive is as follows: the power engine assembly 12 is used as the power source output, which is directly connected to drive the torque converter assembly 14, thereby driving the double gear drive pump assembly 13 to establish oil pressure. The traction module (i.e., flow distributor) and the motor control valve group drive and control the driving hydraulic motor 3-4 to realize the drive of the entire vehicle. The hydrostatic drive mode is used for traction of large-tonnage vehicles, and the hydrostatic drive is used for traction of small-tonnage shunting operations. The switching between the two modes is controlled by the power transmission reversing box 10 and the clutch shift control.

[0023] This technical solution has a simple structure, novel design, flexible and reasonable vehicle layout, and a wide range of uses for the traction locomotive under dual-operating conditions. It is particularly suitable for medium-speed transportation, low-speed transportation and traction conditions, and low-constant-speed traction conditions.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Hydrostatic dual-mode transmission traction locomotive, characterized by: The invention comprises a vehicle frame (1) and a front running wheel pair (3), a rear running wheel pair (2), an air compressor assembly (4), a fuel tank (5) and a brake main air bag (6) arranged at the bottom of the vehicle frame (1); a driver's cab (7) and a machine room (9) are arranged on the upper platform of the vehicle frame (1) from front to back, and a static pressure running hydraulic oil tank (8), a power speed change reversing box (10), a hydraulic heat dissipation assembly (11), a double gear drive pump assembly (13), a hydraulic torque converter assembly (14) and a power engine assembly (12) are arranged inside the machine room (9); the fan end of the air compressor assembly (4) and the power engine assembly (12) are connected and driven by a belt drive, and the air compressor assembly (4) and the brake main air bag (6) are connected by air The power transmission reversing box (10) is connected to the hydraulic torque converter assembly (14) through a universal joint transmission shaft and a hydraulic oil pipe, and the two output shafts of the power transmission reversing box (10) are connected to the input shafts of the front running wheel pair (3) and the rear running wheel pair (2) through a universal joint transmission shaft, the power engine assembly (12) is coaxially connected to the main shaft of the hydraulic torque converter assembly (14), the double gear drive pump assembly (13) is connected to the power output port of the hydraulic torque converter assembly (14) through a spline shaft and bolts, and the double gear drive pump assembly (13) is connected to the static pressure running hydraulic oil tank (8) and the hydraulic heat dissipation assembly (11) through a hydraulic oil pipe, and the double gear drive pump assembly (13) is connected to the front running wheel pair (3).

2. The hydrostatic dual-mode transmission traction locomotive according to claim 1, characterized in that: The front running wheel pair (3) comprises an axle (3-2), a wheel (3-1) mounted on the end of the axle (3-2), an axle box assembly (3-3) and a hydrostatic running drive hydraulic motor (3-4); a hydrostatic running drive hydraulic motor (3-4) is provided on the mounting seats on both sides of the frame (1); the hydrostatic running drive hydraulic motor (3-4) is connected to the end of the axle (3-2) by bolts, and a pressure feedback sensor for hydraulic control is provided on one end of the hydrostatic running drive hydraulic motor (3-4).

3. The hydrostatic dual-mode transmission traction locomotive according to claim 2, characterized in that: The driving hydraulic motor (3-4) adopts a vertical variable motor.

4. The hydrostatic dual-mode transmission traction locomotive according to claim 3, characterized in that: The driving hydraulic motor (3-4) is connected to the double gear driving pump assembly (13) via a traction module and a motor control valve group.

5. The hydrostatic dual-mode transmission traction locomotive according to claim 1, characterized in that: The hydraulic heat dissipation assembly (11) adopts an aluminum composite radiator, and the aluminum composite radiator dissipates heat for the hydraulic drive oil and the hydrostatic drive oil.

6. The hydrostatic dual-mode transmission traction locomotive according to claim 1, characterized in that: The double gear driven pump assembly (13) adopts a bidirectional variable displacement pump.

7. The hydrostatic dual-mode transmission traction locomotive according to any one of claims 1 to 6, characterized in that: A locomotive master driver operating console system is provided in the driver's cab (7).

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