Suspension control valve for automobile crane

Abstract

Provided is a suspension control valve for an automobile crane. Relates to the technical field of electromagnetic valves. Comprising a valve seat, a valve body and connectors, the valve body is arranged at the top of the valve seat, the connectors are arranged at the top of the valve body, a gas inlet and a gas outlet are formed in the valve seat, the connectors are used for being connected with a gas pipe, the gas inlet is used for conveying gas into the gas pipe, and the gas outlet is used for discharging the gas in the gas pipe outwards. The top of the valve seat is further provided with a limiting ring, the limiting ring is located on the outer side of the valve body, a sealing piece is arranged between the limiting ring and the valve body, the outer side of the valve body is covered with a dust cover, and the inner wall of the dust cover is in interference fit with the sealing piece. The dustproof cover is arranged at the top of the valve seat, the dustproof cover can play a dustproof role on the valve body and the connector after being fixed, and the valve body and the connector are prevented from being aged or damaged under erosion of dust or sludge.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, specifically to a suspension control valve for a truck crane. Background Technology

[0002] Truck cranes are a common type of crane, widely used for their high mobility and rapid relocation. Currently, many truck cranes are equipped with air suspension on their chassis for axle balance and shock absorption. Dedicated control valves are also installed on the chassis to regulate the air pressure and airflow of the air suspension, thereby adjusting the vehicle's suspension height and stiffness.

[0003] Chinese patent document CN222040172U discloses an automotive suspension distribution valve, comprising a valve island housing, an air tank solenoid valve, a pressure sensor, a PCB circuit board, and four air spring solenoid valves housed within the valve island housing. The valve island housing also includes an air pipe connector for connecting the four air spring solenoid valves, the air tank solenoid valve, and the pressure sensor in parallel to a compressed air pipeline. The air pipe connector includes an adapter and a gas connector. The adapter is screwed onto the valve island housing, and the gas connector is inserted into the adapter. At least one sealing ring is provided at the connection between the gas connector and the adapter. This invention offers more stable and reliable sealing, ensuring the stability of the air spring solenoid valve's intake and exhaust functions; it also provides better stability in component assembly, enhancing operational stability; furthermore, the electronic connector structure and the valve island housing are integrated, improving production efficiency and reducing production costs.

[0004] However, in the aforementioned patent, the air pipe connector is exposed to the air, which makes it prone to aging and breakage after prolonged use, thereby affecting the control valve's reliable adjustment of the suspension height. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this application provides a suspension control valve for a truck crane.

[0006] This application adopts the following technical solution: a suspension control valve for a truck crane, including a valve seat, a valve body, and connectors. The valve body is located on the top of the valve seat, and a plurality of connectors are located on the top of the valve body. The valve seat is provided with an air inlet and an air outlet. The connectors are used to connect to an air pipe. The air inlet is used to deliver gas into the air pipe, and the air outlet is used to discharge the gas in the air pipe outward. The top of the valve seat is also provided with a limiting ring, which is located on the outside of the valve body. A sealing element is provided between the limiting ring and the valve body. A dust cover is provided on the outside of the valve body, and the inner wall of the dust cover is interference-fitted with the sealing element.

[0007] Optionally, there is an installation gap between the limiting ring and the valve body, the lower part of the seal is adapted to be engaged in the installation gap, and the upper part of the seal extends above the installation gap and is folded away from the valve body.

[0008] Optionally, the dust cover is U-shaped, and the distance between the inner wall of the dust cover and the outer wall of the limiting ring is less than the thickness of the seal.

[0009] Optionally, the dust cover has a flange at its opening, and the flange has several through holes. The top of the valve seat has several threaded holes. The several through holes and the several threaded holes correspond one-to-one and are coaxially arranged. The outside of the dust cover has several bolts. The tail of the bolt abuts against the top of the flange, and the head of the bolt passes through the through hole and is adapted to be screwed into the threaded hole.

[0010] Optionally, the flange and the dust cover are integrally formed, and an arc-shaped guide surface is provided at the connection between the flange and the dust cover. The guide surface and the sealing element interfere with each other in the vertical direction.

[0011] Compared to existing technologies, this application provides a limiting ring and a sealing element at the top of the valve seat. During the installation of the dust cover, the inner wall of the dust cover will compress the sealing element to deform in a set direction. The dust cover is then fixed by the reverse force of the sealing element on the dust cover. After the dust cover is fixed, it can form a dustproof function for the valve body and joints, preventing the valve body and joints from aging or being damaged by dust or sludge, thus extending the overall service life of the control valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 This shows the state of the dust cover after installation;

[0013] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 This shows the state after the dust cover has been removed;

[0014] In the diagram: 1. Valve seat; 11. Air inlet; 12. Air outlet; 13. Threaded hole; 2. Valve body; 3. Connector; 4. Limiting ring; 40. Installation gap; 5. Seal; 6. Dust cover; 7. Flanged edge; 71. Perforation; 72. Guide surface; 8. Bolt. Detailed Implementation

[0015] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] like Figure 1-2 As shown, a suspension control valve for a truck crane includes a valve seat 1, a valve body 2, and connectors 3. The valve body 2 is located on top of the valve seat 1, and several connectors 3 are located on top of the valve body 2. The valve seat 1 is provided with an air inlet 11 and an air outlet 12. The connectors 3 are used to connect to an air pipe. The air inlet 11 is used to deliver gas into the air pipe, and the air outlet 12 is used to discharge the gas in the air pipe outward. The top of the valve seat 1 is also provided with a limiting ring 4, which is located on the outside of the valve body 2. A sealing element 5 is provided between the limiting ring 4 and the valve body 2. A dust cover 6 is provided on the outside of the valve body 2, and the inner wall of the dust cover 6 is interference-fitted with the sealing element 5.

[0017] When the dust cover 6 is placed over the outside of the valve body 2, the inner wall of the dust cover 6 and the seal 5 will be compressed, causing the seal 5 to undergo elastic deformation. Simultaneously, under the support and limiting effect of the limiting ring 4, the seal 5 will exert a reverse force on the dust cover 6, allowing the dust cover 6 to tightly engage with the seal 5. This achieves rapid fixation of the dust cover 6 and provides protection for the valve body 2 and the connector 3, preventing damage to the connector 3 from dust, mud, or other debris. Furthermore, a through hole of the same diameter as the air pipe can be made on the dust cover 6 for the air pipe to pass through, ensuring that the air pipe can reliably supply gas to the suspension or expel gas from the suspension.

[0018] There is an installation gap 40 between the limiting ring 4 and the valve body 2. The lower part of the seal 5 is fitted into the installation gap 40, and the upper part of the seal 5 extends above the installation gap 40 and folds away from the valve body 2. In this way, when the dust cover 6 is placed downward, the inner wall of the dust cover 6 and the upper part of the seal 5 will be squeezed, thereby ensuring that the inner wall of the dust cover 6 and the seal 5 can form an interference fit, improving the dustproof effect of the dust cover 6 on the valve body 2 and the connector 3, and also playing the role of fixing the dust cover 6.

[0019] The dust cover 6 is U-shaped. The distance between the inner wall of the dust cover 6 and the outer wall of the limiting ring 4 is less than the thickness of the sealing element 5. The opening of the dust cover 6 is set downward, so that the dust cover 6 can fit tightly with the sealing element 5 when it covers the valve body 2 downward.

[0020] The dust cover 6 has a flange 7 at its opening, with several through holes 71 on the flange 7. The top of the valve seat 1 has several threaded holes 13, with each through hole 71 corresponding to one of the threaded holes 13 and arranged coaxially. The outer side of the dust cover 6 has several bolts 8, the tail of which abuts against the top of the flange 7, and the head of which passes through the through hole 71 and is screwed into the threaded hole 13. After the dust cover 6 is initially fixed by the interference fit with the sealing element 5, several bolts 8 can be inserted into the corresponding through holes 71 and screwed into the corresponding threaded holes 13 in sequence, so that the flange 7 and the top of the valve seat 1 can be tightly connected, ensuring that the dust cover 6 can be reliably fixed to the top of the valve seat 1 and play a role in preventing dust from entering the valve body 2 and the connector 3.

[0021] The flange 7 and the dust cover 6 are integrally formed, which improves the connection strength between them. This ensures that after the bolts 8 are tightened on the flange 7, the dust cover 6 can be reliably fixed to the outside of the valve body 2. An arc-shaped guide surface 72 is provided at the junction of the flange 7 and the dust cover 6. The guide surface 72 interferes with the sealing element 5 in the vertical direction. When the dust cover 6 is installed, the guide surface 72 contacts the folded sealing element 5 and guides the further bending of the sealing element 5, ensuring that the sealing element 5 can bend in the set direction and fit tightly against the inner wall of the dust cover 6, achieving a dustproof effect.

[0022] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A suspension control valve for a truck crane, comprising a valve seat (1), a valve body (2), and connectors (3), wherein the valve body (2) is disposed on the top of the valve seat (1), and a plurality of connectors (3) are disposed on the top of the valve body (2), the valve seat (1) is provided with an air inlet (11) and an air outlet (12), the connectors (3) are used to connect to an air pipe, the air inlet (11) is used to supply gas into the air pipe, and the air outlet (12) is used to discharge gas from the air pipe, characterized in that, The valve seat (1) is also provided with a limiting ring (4) at the top. The limiting ring (4) is located on the outside of the valve body (2). A sealing element (5) is provided between the limiting ring (4) and the valve body (2). A dust cover (6) is provided on the outside of the valve body (2). The inner wall of the dust cover (6) is interference-fitted with the sealing element (5).

2. The suspension control valve for a truck crane according to claim 1, characterized in that, There is an installation gap (40) between the limiting ring (4) and the valve body (2). The lower part of the sealing element (5) is adapted to be fitted into the installation gap (40), and the upper part of the sealing element (5) extends above the installation gap (40) and is folded away from the valve body (2).

3. The suspension control valve for a truck crane according to claim 2, characterized in that, The dust cover (6) is U-shaped, and the distance between the inner wall of the dust cover (6) and the outer wall of the limiting ring (4) is less than the thickness of the sealing element (5).

4. The suspension control valve for a truck crane according to claim 2, characterized in that, The dust cover (6) has a flange (7) at its opening, and the flange (7) has several through holes (71). The valve seat (1) has several threaded holes (13) at its top. The several through holes (71) and the several threaded holes (13) correspond one-to-one and are coaxially arranged. The dust cover (6) has several bolts (8) on its outer side. The tail of the bolt (8) abuts against the top of the flange (7), and the head of the bolt (8) passes through the through hole (71) and is adapted to be screwed into the threaded hole (13).

5. The suspension control valve for a truck crane according to claim 4, characterized in that, The flange (7) and the dust cover (6) are integrally formed. An arc-shaped guide surface (72) is provided at the connection between the flange (7) and the dust cover (6). The guide surface (72) and the sealing element (5) interfere with each other in the vertical direction.

Images