Hydraulic braking system of car dumper positioning car

Abstract

The utility model relates to a hydraulic braking system of a car dumper positioning car, which comprises a PLC (programmable logic controller) system, a double-hydraulic system and a hydraulic brake which are mounted on a positioning car system, and the PLC system is connected with the positioning car system and controls the double-hydraulic system to drive the hydraulic brake to brake; the hydraulic brake comprises an upper clamping wall, a lower clamping wall, an oil cylinder and a manual loosening mechanism, friction plates are rotationally connected to one ends of the opposite faces of the upper clamping wall and the lower clamping wall through pin shafts, the edge of one side of the brake disc is located between the two friction plates, and a connecting support is arranged between the opposite faces of the upper clamping wall and the lower clamping wall in a penetrating mode. The upper clamping wall and the lower clamping wall are rotationally arranged on the connecting support through a pin shaft, a connecting base is arranged at the top of the oil cylinder, the end, away from the friction plate, of the lower clamping wall is rotationally connected with the connecting base through a pin shaft, a cylinder rod of the oil cylinder penetrates through the lower clamping wall and then is connected with a pressing plate, and a plurality of belleville springs are arranged between the pressing plate and the lower clamping wall. The utility model can reduce the failure rate and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of brakes, in particular to a hydraulic brake system for a tipper positioning vehicle. Background Art

[0002] A car tipper is a large-scale mechanical equipment used to tip and unload bulk materials from railway open wagons. It is a loading and unloading machine that can flip or tilt rail vehicles to unload materials. It is suitable for ports with large transportation volumes and industrial sectors such as metallurgy, coal, and thermal power. With the continuous improvement of the production efficiency of bulk cargo terminals in ports, high efficiency, low failure rate, and easy maintenance have become the development trend of bulk cargo terminal equipment in ports.

[0003] The positioning car brake in the tipping machine system is mainly used to control and ensure that the positioning car stops stably and accurately at the predetermined position to complete the precise positioning operation of the vehicle. These brakes are directly related to the safety and efficiency of the entire tipping machine operation. The performance and maintenance of the brakes are crucial to reducing the failure rate of the tipping machine.

[0004] The current positioning vehicle brake is only equipped with one hydraulic system. When a fault occurs, it cannot be used any longer and needs to be shut down for maintenance, which affects work efficiency. In addition, the degree of automation of the brake is limited, making it difficult to achieve precise control. Summary of the invention

[0005] The utility model aims to solve the deficiencies of the prior art and provides a hydraulic brake system for a tipper positioning vehicle.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic brake system for a tipping machine positioning vehicle, comprising a PLC system, a dual hydraulic system and a hydraulic brake installed on the positioning vehicle system, the PLC system is connected to the positioning vehicle system and controls the dual hydraulic system to drive the hydraulic brake for braking; the hydraulic brake comprises an upper clamping wall, a lower clamping wall, an oil cylinder, and a manual release mechanism, one end of the upper clamping wall and the lower clamping wall opposite surfaces are rotatably connected with a friction plate through a pin shaft, one side edge of the brake disc is located between the two friction plates, a connecting bracket is penetrated between the opposite surfaces of the upper clamping wall and the lower clamping wall, and the upper clamping wall and the lower clamping wall are rotated on the connecting bracket through a pin shaft, and the oil cylinder is manually released. A connecting seat is provided on the top of the cylinder, and the end of the lower clamping wall away from the friction plate is rotatably connected to the connecting seat through a pin shaft. The cylinder rod of the cylinder passes through the lower clamping wall and is connected to a pressure plate. A number of butterfly springs are provided between the pressure plate and the lower clamping wall. A connecting block is provided at the end of the upper clamping wall away from the friction plate, and the upper clamping wall is rotatably connected to the connecting block through a pin shaft, and the cylinder rod of the cylinder is fixedly connected to the bottom of the connecting block; the manual release mechanism includes a base, a handle is provided at one end of the base, a handle locking mechanism for locking the handle is provided on the top of the cylinder, a cam is fixedly connected to one end of the base near the bottom of the cylinder through a pin shaft, and a movable rod is provided inside the cylinder barrel of the cylinder below the cylinder rod, and the bottom of the movable rod passes through the cylinder barrel and is slidably connected to the cam.

[0007] Particularly, the upper clamping wall and the lower clamping wall are respectively provided with notches at one end away from the friction plate, the connecting block is arranged in the notch of the upper clamping wall, and the cylinder rod of the oil cylinder passes through the notch of the lower clamping wall.

[0008] In particular, the handle locking mechanism includes a fixing plate, which is fixedly connected to one end of the top of the oil cylinder. A handle positioning rod is movably provided on the top of the fixing plate. A strip hole is provided at the end of the handle positioning rod away from the handle. A clamping knob is threadedly connected to the fixing plate, and the threaded rod of the clamping knob passes through the strip hole.

[0009] Particularly, a pressure oil inlet is arranged at the upper part of one side of the oil cylinder, a pressure oil outlet is arranged at the lower part, a piston head is arranged at the top of the movable rod, and the piston head is located below the pressure oil outlet.

[0010] Particularly, a proximity switch mounting support plate is provided at a side of the bottom of the oil cylinder away from the handle, a guide frame is provided at the bottom of the proximity switch mounting support plate, and a proximity switch contact support plate is installed on the guide frame.

[0011] In particular, the dual hydraulic system includes two sets of hydraulic stations, each set of hydraulic stations is provided with two hydraulic pumps, and each hydraulic pump controls half of the hydraulic brakes.

[0012] The beneficial effects of the utility model are as follows: the utility model is convenient for timely feedback of brake-related information by setting a PLC system, a dual hydraulic system, and a hydraulic brake, and has a high degree of automation. When a hydraulic station system fails, the other hydraulic station system can be put into use in a timely manner, thereby reducing the failure rate and avoiding affecting work efficiency. The hydraulic brake is provided with a manual release mechanism for convenient forced release, and the manual release mechanism has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the position of the movable rod of the utility model;

[0015] Figure 3 This is a schematic diagram of the handle positioning rod structure of the utility model;

[0016] In the figure: 1-upper clamping wall; 2-lower clamping wall; 3-oil cylinder; 4-friction plate; 5-brake disc; 6-connecting bracket; 7-connecting seat; 8-pressing plate; 9-butterfly spring; 10-connecting block; 11-base; 12-handle; 13-cam; 14-movable rod; 15-fixed plate; 16-handle positioning rod; 17-strip hole; 18-pressing knob; 19-pressure oil inlet; 20-pressure oil outlet; 21-proximity switch mounting support plate; 22-guide frame; 23-proximity switch contact support plate;

[0017] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] like Figure 1-Figure 3 As shown, a hydraulic brake system for a tipper positioning vehicle includes a PLC system, a dual hydraulic system and a hydraulic brake installed on the positioning vehicle system. The PLC system is connected to the positioning vehicle system and controls the dual hydraulic system to drive the hydraulic brake to brake; the dual hydraulic system and the hydraulic brake are connected to the PLC system respectively, and the dual hydraulic system includes two sets of hydraulic stations, each set of hydraulic stations is provided with two hydraulic pumps, and each hydraulic pump controls half of the hydraulic brakes.

[0020] Specifically, a new hydraulic station system is installed on the original positioning vehicle equipment, and the hydraulic oil return pipeline and oil inlet pipeline are installed along the positioning vehicle drive device. The hydraulic driving force is used to open the hydraulic brake, and the spring force is used to close the hydraulic brake. The hydraulic station system adopts a double pump design. When working normally, each hydraulic pump controls half of the hydraulic brake. If one hydraulic pump system fails, the other hydraulic pump can be put into operation immediately. The hydraulic station system contains necessary hydraulic station devices such as low oil level alarm, high temperature alarm, heater, etc.

[0021] The PLC system uses Siemens smart200 to write programs and process the on-site hydraulic brake opening and closing signals, hydraulic station solenoid valve, oil temperature gauge, pressure sensor, differential pressure switch and other signals. If the equipment working needs are met, a normal signal will be returned to the positioning vehicle system. If not, a fault signal will be returned to the positioning vehicle system.

[0022] The hydraulic brake comprises an upper clamping wall 1, a lower clamping wall 2, an oil cylinder 3, and a manual release mechanism. The upper clamping wall 1 and the lower clamping wall 2 are connected to a friction plate 4 at one end thereof through a pin for rotation. The edge of one side of the brake disc 5 is located between the two friction plates 4. A connecting bracket 6 is provided between the opposite surfaces of the upper clamping wall 1 and the lower clamping wall 2, and the upper clamping wall 1 and the lower clamping wall 2 are rotated on the connecting bracket 6 through a pin. A connecting seat 7 is provided at the top of the oil cylinder 3. The end of the lower clamping wall 2 away from the friction plate 4 is rotated with the connecting seat 7 through a pin. Dynamic connection, the cylinder rod of the oil cylinder 3 passes through the lower clamping wall 2 and is connected to a pressure plate 8, a number of butterfly springs 9 are arranged between the pressure plate 8 and the lower clamping wall 2, a connecting block 10 is arranged at the end of the upper clamping wall 1 away from the friction plate 4, and the upper clamping wall 1 is rotatably connected to the connecting block 10 through a pin shaft, and the cylinder rod of the oil cylinder 3 is fixedly connected to the bottom of the connecting block 10; the upper clamping wall 1 and the lower clamping wall 2 are respectively provided with notches at their ends away from the friction plate 4, the connecting block 10 is arranged in the notch of the upper clamping wall 1, and the cylinder rod of the oil cylinder 3 passes through the notch of the lower clamping wall 2.

[0023] The manual release mechanism includes a base 11, a handle 12 is provided at one end of the base 11, a handle locking mechanism for locking the handle 12 is provided at the top of the oil cylinder 3, a cam 13 is fixedly connected to one end of the base 11 near the bottom of the oil cylinder 3 through a pin shaft, a movable rod 14 is provided inside the cylinder barrel of the oil cylinder 3 and is located below the cylinder rod, and the bottom of the movable rod 14 passes through the cylinder barrel and is slidably connected to the cam 13; the handle locking mechanism includes a fixed plate 15, the fixed plate 15 is fixed to one end of the top of the oil cylinder 3, a handle positioning rod 16 is movably provided on the top of the fixed plate 15, and a strip hole 17 is provided at the end of the handle positioning rod 16 away from the handle 12, a clamping knob 18 is threadedly connected to the fixed plate 15, and the threaded rod of the clamping knob 18 passes through the strip hole 17; a pressure oil inlet 19 is provided at the upper part of one side of the oil cylinder 3, and a pressure oil outlet 20 is provided at the lower part, a piston head is provided at the top of the movable rod 14, and the piston head is located below the pressure oil outlet 20.

[0024] A proximity switch mounting support plate 21 is provided at the bottom of the oil cylinder 3 on the side away from the handle 12, a guide frame 22 is provided at the bottom of the proximity switch mounting support plate 21, and a proximity switch contact support plate 23 is installed on the guide frame 22; the proximity switch can be used to detect the working state of the brake, such as whether the brake is fully released or fully braked. This is crucial in ensuring the safe operation of the equipment, because in this way, it can be monitored whether the brake is in the expected position to prevent accidents caused by brake failure.

[0025] Specifically, the hydraulic brake is opened by hydraulic force and clamped by spring force. Hydraulic brakes are made of stainless steel as much as possible to cope with the complex environment of the port. The friction pad 4 of the hydraulic brake is the same as the brake pad GB5763-2008 standard of the automobile industry to ensure the durability of the friction pad 4. The design of the manual release mechanism can be forced to open when there is a problem with the hydraulic brake.

[0026] The hydraulic hard pipes required by the hydraulic station system are made of stainless steel and are fixed with oil pipe clamps at a distance of no more than 1 meter. Each hard pipe is connected to the oil inlet and outlet of the hydraulic brake with a hose. A high-pressure shut-off valve is installed between each hydraulic brake and the main pipeline of the hydraulic station system so that the pipeline system can be closed at any time when the hydraulic brake leaks oil.

[0027] Working principle:

[0028] like Figure 1 As shown, it is in the released state, and the upper and lower friction plates 4 and the brake disc 5 maintain a gap of ≥1m.

[0029] The pressure oil (≥3Mpa) enters the upper chamber of the oil cylinder 3 through the pressure oil inlet 19, causing the piston to move the cylinder rod downward, overcoming the spring force, driving the upper clamping arm 1 and the lower clamping wall 2 to move, causing the upper and lower friction plates 4 to separate from the brake disc 5;

[0030] If the pressure oil flows back to the oil tank from the upper chamber of the oil cylinder 3 through the pressure oil inlet 19, the cylinder rod drives the piston upward under the action of the butterfly spring 9, and drives the upper clamping arm 1 and the lower clamping wall 2 to move, so that the upper and lower friction plates 4 clamp the brake disc 5;

[0031] When the hydraulic power source fails, the clamping knob 18 can be loosened, the handle positioning rod 16 can be pulled and rotated, and then the handle 12 can be disengaged. Then the handle 12 can be held and turned down 90 degrees. The cam 13 drives the movable rod 14 to move downward, thereby forcing the cylinder rod to move downward, so that the upper and lower friction plates 4 are separated from the brake disc 5 and this state is maintained. In normal use, the handle 12 must be kept as Figure 1 State, lock the handle 12 with the handle positioning rod 16 so that it cannot turn downward.

[0032] The utility model is convenient for timely feedback of brake-related information by arranging a PLC system, a dual hydraulic system and a hydraulic brake, and has a high degree of automation. When one hydraulic station system fails, the other hydraulic station system can be put into use in time, thereby reducing the failure rate and avoiding affecting work efficiency. The hydraulic brake is provided with a manual release mechanism for convenient forced release, and the manual release mechanism has a simple structure and is easy to use.

[0033] 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", "axial", "radial", "circumferential" 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 referred device or element 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.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A hydraulic brake system for a tipper positioning vehicle, characterized in that: The invention comprises a PLC system, a dual hydraulic system and a hydraulic brake installed on a positioning vehicle system. The PLC system is connected to the positioning vehicle system and controls the dual hydraulic system to drive the hydraulic brake for braking. The hydraulic brake comprises an upper clamping wall (1), a lower clamping wall (2), an oil cylinder (3) and a manual release mechanism. One end of the upper clamping wall (1) and the lower clamping wall (2) facing each other is rotatably connected with a friction plate (4) through a pin shaft. One side edge of a brake disc (5) is located between the two friction plates (4). A connecting bracket (6) is provided between the facing surfaces of the upper clamping wall (1) and the lower clamping wall (2). The upper clamping wall (1) and the lower clamping wall (2) are rotatably connected on the connecting bracket (6) through a pin shaft. A connecting seat (7) is provided on the top of the oil cylinder (3). One end of the lower clamping wall (2) away from the friction plate (4) is rotatably connected with the connecting seat (7) through a pin shaft. The cylinder rod of the cylinder (3) passes through the lower clamping wall (2) and is connected to a pressure plate (8). A plurality of butterfly springs (9) are arranged between the pressure plate (8) and the lower clamping wall (2). A connecting block (10) is arranged at one end of the upper clamping wall (1) away from the friction plate (4). The upper clamping wall (1) is rotatably connected to the connecting block (10) via a pin shaft. The cylinder rod of the oil cylinder (3) is fixedly connected to the bottom of the connecting block (10). The manual release mechanism comprises a base (11). A handle (12) is arranged at one end of the base (11). A handle locking mechanism for locking the handle (12) is arranged at the top of the oil cylinder (3). A cam (13) is fixedly connected at one end of the base (11) near the bottom of the oil cylinder (3) via a pin shaft. A movable rod (14) located below the cylinder rod is arranged inside the cylinder barrel of the oil cylinder (3). The bottom of the movable rod (14) passes through the cylinder barrel and is slidably connected to the cam (13).

2. The hydraulic brake system for a tipper positioning vehicle according to claim 1, characterized in that: The upper clamping wall (1) and the lower clamping wall (2) are respectively provided with notches at one end away from the friction plate (4); the connecting block (10) is arranged in the notch of the upper clamping wall (1); and the cylinder rod of the oil cylinder (3) passes through the notch of the lower clamping wall (2).

3. The hydraulic brake system for a tipper positioning vehicle according to claim 1, characterized in that: The handle locking mechanism comprises a fixing plate (15), the fixing plate (15) being fixedly connected to one end of the top of the oil cylinder (3), a handle positioning rod (16) being movably provided on the top of the fixing plate (15), a strip hole (17) being provided at one end of the handle positioning rod (16) away from the handle (12), a clamping knob (18) being threadedly connected to the fixing plate (15), and a threaded rod of the clamping knob (18) passing through the strip hole (17).

4. The hydraulic brake system for a tipper positioning vehicle according to claim 1, characterized in that: A pressure oil inlet (19) is provided at the upper part of one side of the oil cylinder (3), and a pressure oil outlet (20) is provided at the lower part. A piston head is provided at the top of the movable rod (14), and the piston head is located below the pressure oil outlet (20).

5. The hydraulic brake system for a tipper positioning vehicle according to claim 1, characterized in that: A proximity switch mounting support plate (21) is provided at the bottom of the oil cylinder (3) at a side away from the handle (12), a guide frame (22) is provided at the bottom of the proximity switch mounting support plate (21), and a proximity switch contact support plate (23) is installed on the guide frame (22).

6. The hydraulic brake system for a tipper positioning vehicle according to claim 1, characterized in that: The dual hydraulic system includes two sets of hydraulic stations, each of which is equipped with two hydraulic pumps, and each hydraulic pump controls half of the hydraulic brakes.

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