Arrangement for a loader brake valve

Abstract

This utility model discloses an arrangement structure for a brake valve in a loader, belonging to the field of engineering machinery braking. It employs a U-shaped baffle with a contoured design to form a three-dimensional protection, covering the upper and lateral openings of the brake pedal valve, blocking the intrusion path of mud, sand, and water mist, and reducing brake pedal valve jamming. The baffle and mounting plate are fixed by an embedded snap-fit ​​and magnetic attraction, adsorbing fine iron filings and improving connection reliability and anti-contamination capability. It mainly includes a mounting plate with a brake pedal valve. A mounting slot is provided on the mounting plate in front of the brake pedal valve, and a U-shaped baffle is inserted into the mounting slot with its baffle surface inclined. This utility model is mainly used for preventing contamination of the brake valve in a loader.

Description

Technical Field

[0001] This utility model relates to the field of braking of engineering machinery, and more specifically, to an arrangement structure for a brake valve of a loader. Background Technology

[0002] The braking system is a crucial component for the safe operation of construction machinery, and its design directly affects the vehicle's safety and handling performance. Currently, loader braking systems primarily employ pneumatic braking technology. The various components of the service braking system, including the brake pedal, pneumatic brakes, and air tanks, are used by the driver to decelerate or stop the vehicle when pressing the brake pedal. The design and layout of the service braking system ensure the vehicle's stability and safety during operation. As a core control unit of construction machinery and a hub for converting mechanical energy into hydraulic energy, the brake valve plays a vital role in the safety of construction machinery. Because most construction machinery operates in harsh environments, over long-term use, foreign objects can enter the brake valve's internal cavity, causing rust, piston jamming, and wear, leading to oil leaks. In such cases, the brakes may fail to apply, potentially causing serious accidents.

[0003] The existing braking system installation layout and floor mat structure have certain limitations. To improve driver braking comfort, the mounting surface of the foot brake valve in the cab is at an angle to the cab floor. Therefore, when contaminants slide down the slope, they accumulate because the floor mat is higher than the brake valve. When the operator presses the brake, the valve core moves downward, making it easier for the accumulated contaminants to enter the interior, accelerating brake valve failure. This can result in the vehicle failing to brake even when the brake is pressed, potentially leading to serious safety accidents.

[0004] Therefore, there is an urgent need to improve the existing braking system to solve the above problems and improve the safety and reliability of the vehicle. Utility Model Content

[0005] The purpose of this utility model is to provide an arrangement structure for the brake valve of a loader, which adopts a U-shaped baffle with a contour design to form a three-dimensional protection, covering the upper and lateral openings of the brake pedal valve, blocking the intrusion path of mud, sand and water mist, reducing brake pedal valve jamming, thereby improving the service life of the brake pedal valve, the safety performance of the construction machinery and the driving comfort of the driver; the baffle and the mounting plate are fixed by embedded snap-fit ​​and magnetic attraction, which adsorbs fine iron filings, improves connection reliability and anti-pollution ability.

[0006] This utility model is achieved through the following technical solution:

[0007] An arrangement structure for a brake valve of a loader includes a mounting plate, on which a brake pedal valve is provided. A mounting slot is provided on the mounting plate in front of the brake pedal valve, and a baffle is inserted into the mounting slot. The baffle is U-shaped and the baffle surface of the baffle is inclined.

[0008] Furthermore, the bottom of the baffle has several mounting holes, and magnets are installed in each of the mounting holes. The baffle is inserted into the mounting slot and held in place by the magnets.

[0009] Furthermore, the bottom of the baffle is a plug-in part, which is U-shaped and inclined, and the mounting slot is an inclined groove that mates with the plug-in part.

[0010] Furthermore, the mounting plate is symmetrically provided with drain ports, which are connected to the mounting slots.

[0011] Furthermore, the baffle surface is set at a 30° angle to the mounting plate.

[0012] Furthermore, when the brake pedal valve is in operation, the height between it and the floor is H, and the height of the baffle is h, where h ≤ H.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Effective barrier against contaminant intrusion: The physical isolation of the baffle structure can prevent contaminants such as mud, dust, and liquid splashes from entering the brake valve; directly reduce the probability of contaminant deposition in the key moving parts of the brake valve (such as the valve core-valve body gap), and avoid brake response delay or failure caused by particulate matter jamming.

[0015] 2. Reduce system failure risk: By reducing the amount of contaminants exposed, the baffle structure can slow down the damage process of valve core surface scratches and sealing ring aging, thereby increasing the mean time between failures (MTBF) of the brake valve and significantly reducing the probability of sudden brake failure.

[0016] 3. Extend the service life of critical components: The baffle structure reduces the amount of metal debris generated by controlling the source, thus extending the replacement cycle of precision components such as valve cores and seals and reducing maintenance costs.

[0017] 4. Maintain the cleanliness level of the oil: Avoid chain reactions such as abnormal viscosity and increased foaming caused by accelerated oil oxidation, and ensure the linearity and stability of braking pressure output.

[0018] 5. Modular quick-installation system: The baffle and mounting plate are fixed by embedded snap-fit ​​and magnetic attraction, which can attract small iron filings and improve the reliability of connection and anti-pollution ability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation of the baffle of this utility model;

[0021] Figure 3 This is a schematic diagram of the mounting slot of this utility model;

[0022] Figure 4 This is a schematic diagram of the installation of the magnet of this utility model.

[0023] In the diagram: 1. Brake pedal valve; 2. Baffle; 21. Magnet; 22. Baffle surface; 3. Mounting plate; 4. Mounting slot; 5. Drain outlet. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 – Figure 4 As shown in Embodiment 1, an arrangement structure for a brake valve of a loader includes a mounting plate 3, a brake pedal valve 1 is provided on the mounting plate 3, a mounting slot 4 is provided on the mounting plate 3 in front of the brake pedal valve 1, a baffle 2 is inserted into the mounting slot 4, the baffle 2 is U-shaped and the baffle surface 22 of the baffle 2 is inclined.

[0026] Example 2: An arrangement structure for a brake valve in a loading mechanism. The bottom of the baffle 2 has several mounting holes, each containing a magnet 21. The baffle 2 is inserted into a mounting slot 4, where the magnets 21 hold the slot 4 in place, reinforcing the connection. It also attracts fine iron filings, improving pollution protection. The bottom of the baffle 2 is a U-shaped, inclined insertion part. The mounting slot 4 is an inclined groove that mates with the insertion part (the insertion part is an extension of the baffle 2's main structure). The mounting plate 3 has symmetrically arranged drain ports 5, which communicate with the mounting slot 4. Wastewater flows along the mounting slot 4 and is discharged through the drain ports 5. The baffle surface 22 is set at a 30° angle to the mounting plate 3, using fluid dynamics principles to guide contaminants away from the valve body. When the brake pedal valve 1 is in operation, the height between it and the floor is H, and the height of the baffle 2 is h, where h ≤ H, to avoid interfering with the valve stem's working stroke and affecting the braking effect. Other aspects are the same as in Example 1.

[0027] Since the mounting surface of the brake pedal valve 1 is inclined, only a U-shaped baffle 2 needs to be installed at the top.

Claims

1. An arrangement structure for a brake valve of a loader, comprising a mounting plate (3) on which a brake pedal valve (1) is provided, characterized in that: The mounting plate (3) in front of the brake pedal valve (1) has a mounting slot (4), and a baffle (2) is inserted into the mounting slot (4). The baffle (2) is U-shaped and the baffle surface (22) of the baffle (2) is inclined.

2. The arrangement structure for the brake valve of the loading mechanism according to claim 1, characterized in that: The bottom of the baffle (2) has several mounting holes, and magnets (21) are installed in each of the mounting holes. The baffle (2) is inserted into the mounting slot (4) and the mounting slot (4) is attracted by the magnets (21).

3. The arrangement structure for the brake valve of the loading mechanism according to claim 1, characterized in that: The bottom of the baffle (2) is the insertion part, which is U-shaped and inclined. The mounting slot (4) is an inclined groove that matches the insertion part.

4. The arrangement structure for the brake valve of the loading mechanism according to claim 1, characterized in that: The mounting plate (3) is symmetrically provided with drain ports (5), which are connected to the mounting slots (4).

5. The arrangement structure for a loading mechanism brake valve according to claim 1 or 3, characterized in that: The baffle surface (22) is set at a 30° angle to the mounting plate (3).

6. The arrangement structure for the brake valve of the loading mechanism according to claim 1, characterized in that: When the brake pedal valve (1) is working, the height between it and the floor is H, and the height of the baffle (2) is h, where h ≤ H.

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