Integrated hydraulic power device and fire truck

Patent metadata

Field	Value
Publication number	US-12258981-B2
Application number	US-202318306642-A
Country	US
Kind code	B2
Filing date	Apr 25, 2023
Priority date	Mar 23, 2023
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

The present disclosure relates to an integrated hydraulic power device and a fire truck. The integrated hydraulic power device includes: an integrated valve including a valve body having an internal flow passage structure, a first mounting end and a second mounting end; a motor fixedly arranged at the first mounting end; a hydraulic oil tank fixedly arranged at the second mounting end; and a hydraulic pump located within the hydraulic oil tank and in drive connection with the motor, wherein the hydraulic pump has an oil suction port for drawing oil from the hydraulic oil tank, and the internal flow passage structure is communicated with the hydraulic oil tank and the hydraulic pump.

First claim

What is claimed is:

1. An integrated hydraulic power device, comprising:
an integrated valve comprising a valve body having an internal flow passage structure, a first mounting end and a second mounting end;
a motor fixedly arranged at the first mounting end;
a hydraulic oil tank fixedly arranged at the second mounting end; and
a hydraulic pump located within the hydraulic oil tank and in drive connection with the motor,
wherein the hydraulic pump has an oil suction port for drawing oil from the hydraulic oil tank, and the internal flow passage structure is communicated with the hydraulic oil tank and the hydraulic pump; an open end of the hydraulic oil tank has an annular flange that protrudes radially outward, and the integrated hydraulic power device further comprises:
a clamping ring sleeved outside the annular flange, the hydraulic oil tank being fixed to the second mounting end by means of bolts and the clamping ring;
a first seal ring located between the second mounting end and an inner cavity surface of the open end; and

a second seal ring located between the second mounting end and the clamping ring.

2. The integrated hydraulic power device according to claim 1 , further comprising:
an oil port component provided within the hydraulic oil tank, configured to implement oil return from the internal flow passage structure to the hydraulic oil tank, and/or to implement oil supply from the hydraulic oil tank to an external backup power system through the internal flow passage structure.

3. The integrated hydraulic power device according to claim 2 , wherein the internal flow passage structure has a valve body oil inlet, and the oil port component comprises an oil port end and a hose, one end of the hose is connected to the valve body oil inlet and the other end of the hose is fluidly connected to the oil port end.

4. The integrated hydraulic power device according to claim 2 , wherein the oil port component further comprises a filter, which is located at the oil port end.

5. The integrated hydraulic power device according to claim 1 , wherein the valve body is a metal 3D printing valve body.

6. The integrated hydraulic power device according to claim 5 , wherein a diameter of flow passages in the internal flow passage structure is less than or equal to 6 mm.

7. The integrated hydraulic power device according to claim 5 , wherein a material of the metal 3D printing valve body comprises stainless steel, aluminum-magnesium-copper alloy, aluminum-magnesium-copper-zinc alloy, or aluminum-magnesium-silicon alloy.

8. The integrated hydraulic power device according to claim 1 , wherein the valve body further has a plug-in port, and the integrated valve further comprises a hydraulic control plug-in connector, which is plugged in the plug-in port and communicated with the internal flow passage structure.

9. The integrated hydraulic power device according to claim 8 , wherein the motor is a servo motor, and the integrated valve is a pump-controlled control valve, and the hydraulic control plug-in connector comprises at least one of a first one-way valve, an solenoid directional control valve, first shuttle valves, a first overflow valve and a first pressure measuring valve.

10. The integrated hydraulic power device according to claim 8 , wherein the motor is a DC brushless motor, and the integrated valve is a valve-controlled control valve, and the hydraulic control plug-in connector comprises at least one of a second one-way valve, a pressure compensator, an electromagnetic proportional reversing valve, second shuttle valves, a second overflow valve, and a second pressure measuring valve.

11. The integrated hydraulic power device according to claim 1 , wherein the first mounting end and the second mounting end are located on two opposite sides of the valve body, and the valve body also has a central hole running through the first mounting end and the second mounting end, a power output shaft of the motor is in drive connection with the hydraulic pump through a coupling provided in the central hole.

12. The integrated hydraulic power device according to claim 1 , wherein the motor is threaded connected to a plurality of motor mounting fixing holes located at the first mounting end by means of bolts, and/or the hydraulic oil tank is threaded connected to a plurality of tank mounting fixing holes located at the second mounting end by means of bolts.

13. The integrated hydraulic power device according to claim 1 , wherein a material of the hydraulic oil tank is a non-metallic material.

14. The integrated hydraulic power device according to claim 13 , wherein the non-metallic material comprises polyethylene or polypropylene.

15. The integrated hydraulic power device according to claim 14 , wherein the hydraulic oil tank comprises:
a first part, which is cylindrical in shape and has one end connected to the second mounting end; and
a second part, which is connected to the other end of the first part away from the valve body and is internally communicated with the first part,
wherein in an axis direction of the first part, an inner cavity cross-sectional area of the second part is larger than an inner cavity cross-sectional area of the first part.

16. The integrated hydraulic power device according to claim 1 , wherein the clamping ring comprises a plurality of segments, and the plurality of segments are connected successively along a circumferential direction of the clamping ring.

17. The integrated hydraulic power device according to claim 1 , wherein the first seal ring comprises an O-ring seal, and the second seal ring comprises a flat washer.

18. A fire truck, comprising:
the integrated hydraulic power device of claim 1 .

19. The fire truck according to claim 18 , wherein the fire truck is an aerial ladder fire truck, a lift-up fire engine or an aerial work platform truck.

Assignees

• Jiangsu Xcmg Construction Machinery Res Institute Ltd

Inventors

• Bo Fuxiang
• He Bing
• Wang Shuaitong
• Lu Liangwei

Classifications

• F15B13/10

  Special arrangements for operating the actuated device {with or} without using fluid pressure, e.g. for emergency use · CPC title

• F15B1/26

  Supply reservoir or sump assemblies · CPC title

• F04C2240/40

  Electric motor · CPC title

• F04C15/06

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• A62C27/00

  Fire-fighting land vehicles · CPC title