Hydraulic oil cooling device for truck crane

Abstract

The utility model relates to a kind of automobile crane hydraulic oil heat sink, to solve the problems of high cost, high failure rate and high noise of existing hydraulic oil radiator. Traditional radiator needs to be equipped with electric fan, high cost and easy to failure, large working current, increase electrical load, and noise affects operating environment. The utility model cancels electric fan, places hydraulic oil heat exchanger below intercooler, in front of engine coolant radiator, and realizes hydraulic oil heat dissipation using engine heat dissipation system. Hydraulic oil is pumped to heat exchanger through hydraulic pump, collector ring and hydraulic valve, and then returned to hydraulic oil tank, completing heat dissipation cycle. The device reduces crane manufacturing cost, reduces failure points, eliminates noise on the car, improves operation comfort, and has significant technical effects and application value.

Description

Technical Field

[0001] This utility model relates to the field of truck crane technology, and in particular to a hydraulic oil cooling device for truck cranes, which aims to solve the problems of high cost, high failure rate and high noise of existing hydraulic oil coolers. Background Technology

[0002] Existing hydraulic oil cooling devices for truck cranes are typically installed below the slewing platform of the crane's upper structure, such as... Figure 1 As shown, the gearbox 600 installed at the rear of the engine drives the power take-off shaft 610 to rotate. The power take-off shaft 610 drives the hydraulic pump 500 installed on the crane chassis to rotate. The inlet of the hydraulic pump 500 is connected to the outlet of the hydraulic oil tank 200 through a pipe. The outlet of the hydraulic pump 500 is connected to the first inlet 410 of the collector ring 400 installed on the crane chassis through a pipe. The first outlet 420 of the collector ring 400 is connected to the inlet of the hydraulic valve 300 installed on the crane's upper turntable through a pipe. The outlet of the hydraulic valve 300 is connected to the inlet of the hydraulic oil radiator 900 through a pipe. The outlet of the hydraulic oil radiator 900 is connected to the second inlet 430 of the collector ring 400 through a pipe. The second outlet 440 of the collector ring 400 is connected to the inlet of the hydraulic oil tank 200 through a pipe. When the hydraulic oil temperature rises, the electric fan 910 of the hydraulic oil radiator 900 is turned on. The electric fan 910 carries away the heat from the heat exchanger fins in the hydraulic oil radiator 900, thereby cooling the hydraulic oil.

[0003] However, this existing technology has the following drawbacks:

[0004] (1) High cost, requiring a separate cooling fan, which increases manufacturing costs.

[0005] (2) High failure rate, the cooling fan is prone to water ingress leading to failure, and the operating current is large, which increases the electrical load and electrical failure points of the whole machine.

[0006] (3) The electric fan generates a lot of noise when it is working, which affects the working environment of the operator.

[0007] Patent application number CN201420417627.2 relates to a crane and its hydraulic oil radiator, comprising a core having an oil inlet pipe, an oil outlet pipe, and fins; the horizontally arranged oil inlet pipe is positioned side-by-side below the oil outlet pipe, and several fins are arranged side-by-side between the oil inlet and oil outlet pipes, with each fin connected to both the oil inlet and oil outlet pipes. This invention allows hydraulic oil to fill the entire interior of the core, resulting in more uniform heat dissipation, reduced pressure loss, and improved heat dissipation efficiency.

[0008] However, the aforementioned patented technology also includes a cooling fan, which cannot solve the technical problems existing in the prior art, nor does it provide any technical inspiration for solving the problems existing in the prior art. Utility Model Content

[0009] The purpose of this utility model is to provide a hydraulic oil cooling device for truck cranes to solve the problems mentioned in the background art.

[0010] (1) How to eliminate the noise problem of electric fans without using them.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A hydraulic oil cooling device for a truck crane;

[0013] This includes hydraulic oil heat exchangers, hydraulic oil tanks, hydraulic pumps, manifolds, and hydraulic valves;

[0014] The hydraulic oil heat exchanger is installed below the intercooler and in front of the engine coolant radiator.

[0015] Hydraulic oil tanks are used to store hydraulic oil;

[0016] The slip ring is installed on the crane chassis to connect the hydraulic pump and hydraulic valves, enabling the transmission of hydraulic oil.

[0017] The hydraulic valve is installed on the upper turntable of the crane to control the flow of hydraulic oil;

[0018] The hydraulic pump draws hydraulic oil from the hydraulic oil tank into the hydraulic pump inlet. The hydraulic oil then passes through the hydraulic pump, the manifold ring, the hydraulic valve, and the manifold ring again before finally reaching the hydraulic oil heat exchanger. In the hydraulic oil heat exchanger, the hydraulic oil exchanges heat with the engine coolant heat exchanger. The cooled hydraulic oil then returns to the hydraulic oil tank through pipes.

[0019] Based on the above technical solution, the present invention can be further improved as follows.

[0020] Furthermore, it also includes a power take-off shaft, one end of which is mounted on the gearbox at the rear of the engine, and the other end of which is connected to the hydraulic pump of the crane chassis. The power take-off shaft drives the hydraulic pump to rotate, drawing hydraulic oil from the hydraulic oil tank and outputting it.

[0021] With this structure, the hydraulic oil heat exchanger is installed below the intercooler and in front of the engine coolant heat exchanger, utilizing the engine cooling system to dissipate hydraulic oil heat. This truck crane's hydraulic oil cooling device eliminates the need for an electric fan, reducing crane manufacturing costs, lowering the overall vehicle failure rate, and eliminating noise sources on the crane.

[0022] Compared with existing technologies, this hydraulic oil cooling device for truck cranes has the following advantages:

[0023] (1) The electric fan was eliminated, reducing manufacturing costs.

[0024] (2) It avoids the failure caused by water entering the cooling fan, and reduces the electrical load and failure points.

[0025] (3) It eliminated the noise of the electric fan and improved the working environment for operators. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the assembly of a hydraulic oil cooler in the prior art.

[0027] Figure 2 This is a perspective view illustrating the assembly of an embodiment of the hydraulic oil cooling device for a truck crane.

[0028] Explanation of the labels in the diagram:

[0029] Hydraulic oil heat exchanger - 100; Hydraulic oil tank - 200; Hydraulic valve - 300; Swivel ring - 400; First inlet - 410; First outlet - 420; Second inlet - 430; Second outlet - 440; Hydraulic pump - 500; Gearbox - 600; Power take-off shaft - 610; Intercooler - 700; Engine coolant heat exchanger - 800; Hydraulic oil radiator - 900; Fan - 910. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Please see Figure 2 As shown.

[0034] The hydraulic oil cooling device for this truck crane includes a hydraulic oil heat exchanger 100, a power take-off shaft 610, a hydraulic oil tank 200, a hydraulic pump 500, a manifold ring 400, and a hydraulic valve 300.

[0035] The hydraulic oil heat exchanger 100 is installed below the intercooler 700 and in front of the engine coolant radiator, and uses the engine cooling system to dissipate hydraulic oil heat.

[0036] The hydraulic oil tank 200 is used to store hydraulic oil.

[0037] The gearbox 600, installed at the rear of the engine, drives the power take-off shaft 610 to rotate. The power take-off shaft 610 drives the hydraulic pump 500, which is installed on the crane chassis, to rotate. This, in turn, drives the hydraulic pump 500 to rotate, drawing hydraulic oil from the hydraulic oil tank 200 and outputting it.

[0038] The slip ring 400 is installed on the crane chassis to connect the hydraulic pump 500 and the hydraulic valve 300 to realize the transmission of hydraulic oil.

[0039] The hydraulic valve 300 is installed on the upper turntable of the crane to control the flow of hydraulic oil.

[0040] In use, the gearbox 600 installed at the rear of the engine drives the power take-off shaft 610 to rotate. The power take-off shaft 610 drives the hydraulic pump 500 installed on the crane chassis to rotate. The rotation of the hydraulic pump 500 draws hydraulic oil from the hydraulic oil tank 200 into the inlet of the hydraulic pump 500. The inlet of the hydraulic pump 500 is connected to the outlet of the hydraulic oil tank 200 through a pipe. The outlet of the hydraulic pump 500 is connected to the first inlet 410 of the collector ring 400 installed on the crane chassis through a pipe. The first outlet 420 of the collector ring 400 is connected to the inlet of the hydraulic valve 300 installed on the crane's upper turntable through a pipe. The outlet of the hydraulic valve 300 is connected to the second inlet 430 of the collector ring 400 through a pipe. The second outlet 440 of the collector ring 400 is connected to the inlet of the hydraulic oil heat exchanger 100 through a pipe. The outlet of the hydraulic oil heat exchanger 100 is connected to the inlet of the hydraulic oil tank 200 through a pipe. Hydraulic oil flows from hydraulic oil tank 200 through hydraulic pump 500, manifold 400, hydraulic valve 300, manifold 400, hydraulic oil heat exchanger 100, and finally returns to hydraulic oil tank 200.

[0041] The hydraulic oil heat exchanger 100 is installed below the intercooler 700 and in front of the engine coolant heat exchanger 800, utilizing the engine cooling system to dissipate hydraulic oil heat. This structure eliminates the need for an electric fan, reducing crane manufacturing costs, lowering the overall vehicle failure rate, and eliminating noise sources on the crane.

[0042] The above description is only one embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A hydraulic oil cooling device for a truck crane, characterized in that: This includes hydraulic oil heat exchangers, hydraulic oil tanks, hydraulic pumps, manifolds, and hydraulic valves; The hydraulic oil heat exchanger is installed below the intercooler and in front of the engine coolant radiator. Hydraulic oil tanks are used to store hydraulic oil; The slip ring is installed on the crane chassis to connect the hydraulic pump and hydraulic valves, enabling the transmission of hydraulic oil. The hydraulic valve is installed on the upper turntable of the crane to control the flow of hydraulic oil; The hydraulic pump draws hydraulic oil from the hydraulic oil tank into the hydraulic pump inlet. The hydraulic oil then passes through the hydraulic pump, the manifold ring, the hydraulic valve, and the manifold ring again before finally reaching the hydraulic oil heat exchanger. In the hydraulic oil heat exchanger, the hydraulic oil exchanges heat with the engine coolant heat exchanger. The cooled hydraulic oil then returns to the hydraulic oil tank through pipes.

2. The hydraulic oil cooling device for truck cranes according to claim 1, characterized in that: It also includes a power take-off shaft, one end of which is mounted on the gearbox at the rear of the engine, and the other end of which is connected to the hydraulic pump of the crane chassis. The power take-off shaft drives the hydraulic pump to rotate, drawing hydraulic oil from the hydraulic oil tank and outputting it.

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