The present disclosure relates to an apparatus for fixing a pressure vessel, the apparatus including: a frame part disposed to be separable from the subject and configured to support the pressure vessel; and a foothold disposed on the frame part, thereby obtaining an advantageous effect of simplifying a structure and improving a degree of design freedom and spatial utilization.

A working machine body includes a machine body having a front and a rear opposite to the front in a front-rear direction and an engine mounted in the machine body. A selective catalytic reduction catalyst is provided in the machine body and connected to the machine body and connected to the engine. A urea aqueous solution tank is to store a urea aqueous solution. The urea aqueous solution tank is connected to the selective catalytic reduction catalyst and provided in the machine body between the engine and the front of the machine body in the front-rear direction.

The invention relates to a hydraulic tank (10) for storing a hydraulic liquid, comprising a one-piece tank housing (12) which forms a plastic hollow body and is manufactured by a rotational moulding process, wherein the tank housing (12) comprises at least one connection opening (92, 94, 126) at which is arranged a connection element (100, 110, 132) that is releasably connectable to a hydraulic conduit. In order to enable the hydraulic tank to be more cost-effective to produce, the connection element (100, 110, 132) comprises a plastic body which is manufactured by an injection moulding process and is welded together with the tank housing (12). Furthermore, a method for manufacturing a hydraulic tank (10) is proposed.

A device for cooling and heating a urea solution to be injected into exhaust gas discharged from an engine in order to reduce nitrogen oxides in the exhaust gas includes an engine including a cooling fan, a coolant pump, and a main cooler; a urea solution tank storing the urea solution and having an embedded heat exchange pipe through which first coolant and second coolant circulates; an additional coolant tank storing the second coolant; a water pump supplying the second coolant from the additional coolant tank to the heat exchange pipe; a valve configured to be opened or closed in order to supply the first coolant and the second coolant to the heat exchange pipe through a supply line, and to move the first coolant and the second coolant, which are discharged from the heat exchange pipe through a discharge line, to rise coolant pump and the additional coolant tank, respectively and a controller for supplying the second coolant to the heat exchange pipe through the supply line when the urea solution temperature exceeds a set temperature and for supplying the first coolant to the heat exchange pipe through the supply line when the urea solution temperature is below or equal to the set temperature, and opening or closing the valve.

A resin-made fuel tank mounting structure for construction machine is provided that provides a tank capacity without significantly affecting the layouts of other components and easily achieves assembling quality required for the resin-made fuel tank. A resin-made fuel tank mounting structure for mounting resin-made fuel tank on a construction machine including stepwise maintenance steps having plurality of treads and connecting a body floor on body frame and maintenance floor arranged above the body floor, wherein stepwise portion constituting a part of a plurality of treads of maintenance steps is formed on resin-made fuel tank, and horizontal surface of first bracket for fixing resin-made fuel tank onto the body floor is used as the lowest tread on the body floor of the plurality of treads.

A controller according to the present invention has: a storage section that stores a first relationship between manipulated variables of an operating lever preset for each vehicle-body weight and target delivery pressures of a hydraulic pump; a target delivery pressure computation section that applies the vehicle-body weight inputted through an input device and the manipulated variable of the operating lever corresponding to a pilot pressure detected by pilot pressure sensors, to a first relationship stored in the storage section in order to calculate a target delivery pressure of the hydraulic pump; and a feedback control section that performs feedback control on the center bypass selector valve such that the delivery pressure of the hydraulic pump detected by the delivery pressure sensor agrees with the target delivery pressure of the hydraulic pump calculated by the target delivery pressure computation section.

A work machine including a specific actuator that supplies hydraulic fluid from a plurality of hydraulic pumps includes: first and second hydraulic pumps communicating with a first hydraulic actuator; a first control valve returning hydraulic fluid delivered by the first hydraulic pump to a tank; and a load detection section that detects a load on the first hydraulic actuator. A control valve drive section drives the first control valve such that a communication area between the first hydraulic pump and the tank is enlarged corresponding to an increase in the load on the first hydraulic actuator; and a flow rate control section, during supply of the hydraulic fluid from the first and second hydraulic pumps to the first hydraulic actuator, controls to reduce a delivery flow rate of the first hydraulic pump corresponding to an increase in the load on the first hydraulic actuator.

A storage system for storing hydraulic fluid used to drive hydraulically driven components of an agricultural implement and of filling the same are provided. The storage system includes a tank having an underside. The tank has a cavity in an interior thereof for receiving the hydraulic fluid therein. A quick connect coupling is operatively connected to the underside of the tank and has an output end in communication with the cavity in the tank and an input end connectable to a hydraulic fluid source. The quick connect coupling is configured to allow for flow from the input end to the output end thereof.

On a revolving frame (5), a counterweight (6), an engine (7), a cooling fan (9), a heat exchanger (10), an exterior cover (14) forming a machine room (15) on the revolving frame (5), an exhaust gas purifying device (16) including a urea selective reduction catalyst (24), a urea water injection valve (26) injecting a urea water which is a reducing agent toward an upstream side of the urea selective reduction catalyst (24), and a urea water supply line (28) through which the urea water to be supplied to the urea water injection valve (26) flows are provided. A horizontal support member (34) supporting the exterior cover (14) is provided on a front side of the counterweight (6), and a heat shield cover (38) is mounted on the horizontal support member (34). A line accommodating space (41) is formed between the horizontal support member (34) and the heat shield cover (38), and a urea water supply line (28) for shielding heat from the engine (7) is accommodated in this line accommodating space (41).

A ride control system includes four independent metering valves (IMVs) that are independently and selectively controlled by a controller for attenuating oscillations in a hydraulic actuator of a machine. The controller is configured to open at least one of the IMVs for supplying pressurized fluid from a tank to a head end chamber of the hydraulic actuator when a pressure of the head end chamber drops to a value less than an initially registered pressure. Additionally, when the displacement of the piston block is positive and the pressure in the head end chamber falls to a value less than the pressure of fluid in a rod end chamber of the hydraulic actuator, the controller may also open another one of the IMVs by which fluid from the rod end chamber could be supplied to the head end chamber for supplementing pump flow and attenuating oscillations in the hydraulic actuator.