Speed reducer gear oil cooling system and mechanical pavement cold recycling machine

Abstract

The utility model discloses a speed reducer gear oil cooling system and a mechanical pavement cold recycling machine. The speed reducer gear oil cooling system comprises an oil outlet pipe, an oil return pipe, a hydraulic gear oil pump, a gear oil filter and a radiator, wherein the oil outlet pipe and the oil return pipe are arranged outside a speed reducer gear oil cavity; the radiator is connected with the oil return pipe; the hydraulic gear oil pump comprises a driving end and an executing end; the driving end is provided with a hydraulic oil circulating mechanism for driving the driving end to operate; and the hydraulic oil circulating mechanism comprises a power circulating part and a temperature controller. The hydraulic gear oil pump is used for externally circulating gear oil of the speed reducer, the gear oil filter and the radiator are used for filtering and cooling the externally-circulating gear oil, and the temperature controller is used for timely starting and stopping the power circulating part and adjusting the output flow of hydraulic oil of the power circulating part according to the oil temperature of a gear oil cavity of the speed reducer. Adjustment of the gear oil output flow of the executing end of the hydraulic gear oil pump is achieved, and adjustment of the gear oil cooling effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gear oil heat dissipation system of speed reducer and mechanical type road surface cold recycling machine, belong to the technical field of mechanical cutting speed reducer. BACKGROUND

[0002] Mechanical type road surface cold recycling machine is a kind of multifunctional road maintenance equipment, mainly used for old asphalt pavement upgrading and reconstruction operation and road surface water stable layer regeneration operation, road surface strength is high, continuous construction operation time is long, working condition is complex and poor, leading to cutting speed reducer heavy load, impact, internal temperature rise, pressure instability, seriously affect internal sealing and friction pair, frequent shaft end sealing and skeleton oil seal damage and transmission pair damage phenomenon. SUMMARY

[0003] The utility model discloses a kind of gear oil heat dissipation system of speed reducer and mechanical type road surface cold recycling machine, with the effect of protecting the internal sealing of speed reducer, solve the current cutting speed reducer because internal gear oil temperature cannot be reduced in time, transmission pair friction is big, impurity is gathered, finally lead to internal sealing failure.

[0004] To achieve the above-mentioned purpose / To solve the above-mentioned technical problems, the utility model is implemented by the following technical scheme:

[0005] The utility model provides a kind of gear oil heat dissipation system of speed reducer on one hand, including the oil outlet pipe and oil return pipe installed in the gear oil cavity outside speed reducer, hydraulic gear oil pump, gear oil filter and radiator are connected in series in oil outlet pipe in proper order;

[0006] The radiator is connected with the oil return pipe;

[0007] The hydraulic gear oil pump includes driving end and execution end, and the driving end is connected with the transmission of execution end;

[0008] The execution end is equipped with first oil inlet and first oil outlet, and the first oil inlet is connected with the oil outlet pipe, and the first oil outlet is connected with the gear oil filter;

[0009] The driving end is equipped with hydraulic oil circulating mechanism for driving the driving end to run;The hydraulic oil circulating mechanism includes power circulation part and temperature controller electrically connected with power circulation part.

[0010] Optionally, the oil outlet pipe is also equipped with one-way valve for adjusting the back pressure of oil return pipe.

[0011] Optionally, the one-way valve is equipped with second oil inlet and second oil outlet;The second oil inlet is connected with the first oil outlet, and the second oil outlet is connected with the first oil inlet.

[0012] Optionally, the oil return pipe is further connected to a pressure stabilizing mechanism for maintaining pressure balance inside the gear oil chamber of the reducer.

[0013] Optionally, the pressure stabilizing mechanism includes a regeneration cylinder and a breathable tank; one end of the regeneration cylinder is connected to the oil return pipe, and the other end is connected to the breathable tank.

[0014] Optionally, the power circulation unit includes a hydraulic oil tank, a plunger pump, a pressure reducing valve and a multi-position proportional directional valve connected in sequence; the multi-position proportional directional valve is respectively connected to the driving end and the hydraulic oil tank.

[0015] Optionally, the temperature controller includes a controller and a temperature sensor provided in the gear oil chamber of the reducer; the controller is electrically connected to the temperature sensor and the multi-position proportional directional valve respectively, and the temperature sensor model is PT1000.

[0016] Optionally, the driving end includes an oil inlet A and an oil outlet B, the plunger pump is provided with a third oil inlet and a third oil outlet, and the pressure reducing valve is provided with an oil inlet P and a fourth oil outlet;

[0017] The multi-position proportional directional valve is a two-position proportional directional valve, and is provided with a fourth oil inlet, an oil return port T, a fifth oil inlet, and a fifth oil outlet. When the multi-position proportional directional valve is not energized, the fourth oil inlet is disconnected from the fifth oil outlet, and the fifth oil inlet is connected to the oil return port T. When the multi-position proportional directional valve is energized, the fourth oil inlet is connected to the fifth oil outlet, and the fifth oil inlet is connected to the oil return port T.

[0018] The third oil inlet is connected to the hydraulic oil tank, the third oil outlet is connected to the oil inlet P, the fourth oil outlet is connected to the fourth oil inlet, the fifth oil outlet is connected to the oil inlet A, the oil outlet B is connected to the fifth oil inlet, and the oil return port T is connected to the hydraulic oil tank.

[0019] Optionally, a high-pressure filter is further provided between the plunger pump and the pressure reducing valve; the high-pressure filter is provided with a sixth oil inlet and a sixth oil outlet, the sixth oil inlet is connected to the third oil outlet, and the sixth oil outlet is connected to the oil inlet P.

[0020] On the other hand, the present invention provides a mechanical pavement cold regeneration machine, comprising the above-mentioned reducer gear oil heat dissipation system.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The utility model discloses utilize hydraulic gear oil pump to the gear oil of speed reducer carries out external circulation, and through gear oil filter and radiator to the gear oil of external circulation is filtered and cooling cooling, simultaneously utilize temperature controller according to the oil temperature of speed reducer gear oil cavity timely start -stop power circulation part and adjust the output flow of power circulation part hydraulic oil, realize to the adjustment of hydraulic gear oil pump execution end gear oil output flow, finally reach the adjustment of gear oil cooling effect, more match actual working condition and carry out cooling to gear oil in time, effectively protected the internal sealing of speed reducer, solved the current cutting speed reducer because the problem of internal gear oil oil temperature that cannot reduce in time, appears transmission pair friction big, impurity gathers, finally leads to internal sealing failure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of a speed reducer gear oil heat dissipation system provided by the embodiment 1 of the utility model;

[0024] Figure 2 It is the whole structure schematic diagram of a speed reducer gear oil heat dissipation system provided by the embodiment 2 of the utility model.

[0025] In the drawing: 1, speed reducer gear oil cavity;2, oil outlet pipe;3, oil return pipe;4, hydraulic gear oil pump;5, gear oil filter;6, radiator;7, drive end;701, oil inlet A;702, oil outlet B;8, execution end;801, first oil inlet;802, first oil outlet;9, check valve;901, second oil inlet;902, second oil outlet;10, temperature sensor;11, hydraulic oil tank;12, plunger pump;1201, third oil inlet;1202, third oil outlet;13, pressure reducing valve;1301, oil inlet P;1302, fourth oil outlet;14, multi-position proportional directional valve;1401, fourth oil inlet;1402, oil return port T;1403, fifth oil inlet;1404, fifth oil outlet;15, high-pressure filter;1501, sixth oil inlet;1502, sixth oil outlet;16, regenerative cylinder;17, breather tank. DETAILED DESCRIPTION

[0026] The utility model makes further description below combining with the drawing. The following embodiment is only for more clearly explaining the technical scheme of the utility model, and can not limit the protection scope of the utility model by this. Embodiment 1

[0027] A speed reducer gear oil heat dissipation system, including the oil outlet pipe 2 and oil return pipe 3 of installation in the speed reducer gear oil cavity 1 outside, hydraulic gear oil pump 4, gear oil filter 5 and radiator 6 are in turn connected in series in the oil outlet pipe 2;

[0028] Hydraulic gear oil pump 4 includes drive end 7 and execution end 8, and drive end 7 is connected with transmission execution end 8.

[0029] The executing end 8 is provided with a first oil inlet 801 and a first oil outlet 802, the first oil inlet 801 is connected with the oil outlet pipe 2, and the first oil outlet 802 is connected with the gear oil filter 5;

[0030] The radiator 6 is connected with the oil return pipe 3;

[0031] In order to adjust the back pressure of the oil return pipe 3 and reduce the pressure of the whole heat dissipation system, the oil outlet pipe 2 is further provided with a one-way valve 9 for adjusting the back pressure of the oil return pipe 3, wherein the one-way valve 9 is provided with a second oil inlet 901 and a second oil outlet 902; the second oil inlet 901 is connected with the first oil outlet 802, and the second oil outlet 902 is connected with the first oil inlet 801;

[0032] The driving end 7 is provided with a hydraulic oil circulating mechanism for driving the driving end 7 to operate; the hydraulic oil circulating mechanism comprises a power circulating part and a temperature controller for starting the power circulating part according to the oil temperature switch of the gear oil cavity 1 of the speed reducer and adjusting the output flow of the power circulating part, and specifically:

[0033] The power circulating part comprises a hydraulic oil tank 11, a plunger pump 12, a pressure reducing valve 13 and a multi-position proportional directional valve 14 connected in sequence; the multi-position proportional directional valve 14 is connected with the driving end 7 and the hydraulic oil tank 11 respectively, wherein the driving end 7 comprises an oil inlet A701 and an oil outlet B702, the plunger pump 12 is provided with a third oil inlet 1201 and a third oil outlet 1202, and the pressure reducing valve 13 is provided with an oil inlet P1301 and a fourth oil outlet 1302;

[0034] The multi-position proportional directional valve 14 is a two-position proportional directional valve, and is provided with a fourth oil inlet 1401, a return port T1402, a fifth oil inlet 1403 and a fifth oil outlet 1404; when the multi-position proportional directional valve 14 is not powered, the fourth oil inlet 1401 is disconnected with the fifth oil outlet 1404, and the fifth oil inlet 1403 is communicated with the return port T1402; when the multi-position proportional directional valve 14 is powered, the fourth oil inlet 1401 is communicated with the fifth oil outlet 1404, and the fifth oil inlet 1403 is communicated with the return port T1402;

[0035] The third oil inlet 1201 is connected with the hydraulic oil tank 11, the third oil outlet 1202 is connected with the oil inlet P1301, the fourth oil outlet 1302 is connected with the fourth oil inlet 1401, the fifth oil outlet 1404 is connected with the oil inlet A701, the oil outlet B702 is connected with the fifth oil inlet 1403, and the return port T1402 is connected with the hydraulic oil tank 11;

[0036] The temperature controller comprises a controller and a temperature sensor 10, the controller is electrically connected with the temperature sensor 10, the temperature sensor 10 is arranged in the gear oil cavity 1 of the speed reducer, and the controller is electrically connected with the multi-position proportional directional valve 14;

[0037] In this embodiment, the temperature sensor 10 adopts a TE brand PT1000 temperature sensor. When the gear oil temperature in the reducer gear oil cavity 1 exceeds 80℃, the controller controls the multi-position proportional directional valve 14 to be powered on, the coil input current is 600mA, the fourth oil inlet 1401 is communicated with the fifth oil outlet 1404, the fifth oil inlet 1403 is communicated with the oil return port T1402, and according to the preset program, if the gear oil temperature is greater than 85℃, then the output flow of the multi-position proportional directional valve 14 is increased.

[0038] In order to maintain the balance of the internal pressure of the reducer gear oil cavity 1, the oil return pipe 3 is also connected with a pressure stabilizing mechanism. Specifically, the pressure stabilizing mechanism includes a regenerative cylinder 16 and an air breather 17. One end of the regenerative cylinder 16 is connected with the oil return pipe 3, and the other end is connected with the air breather 17. The air breather 17 is communicated with the ambient atmospheric pressure, so as to achieve the effect of adjusting and stabilizing the internal pressure of the reducer gear oil cavity 1. Embodiment 2

[0039] As shown in Figure 2 A reducer gear oil heat dissipation system, comprising an oil outlet pipe 2 and an oil return pipe 3 installed outside the reducer gear oil cavity 1, a hydraulic gear oil pump 4, a gear oil filter 5 and a radiator 6 connected in series with the oil outlet pipe 2 in sequence;

[0040] The hydraulic gear oil pump 4 comprises a driving end 7 and an executing end 8, and the driving end 7 is drivingly connected with the executing end 8;

[0041] The executing end 8 is provided with a first oil inlet 801 and a first oil outlet 802. The first oil inlet 801 is connected with the oil outlet pipe 2, and the first oil outlet 802 is connected with the gear oil filter 5;

[0042] The radiator 6 is connected with the oil return pipe 3, and the gear oil is continuously cooled through the radiator 6;

[0043] In order to adjust the back pressure of the oil return pipe 3 and reduce the pressure of the whole heat dissipation system, the oil outlet pipe 2 is also provided with a one-way valve 9 for adjusting the back pressure of the oil return pipe 3. The one-way valve 9 is provided with a second oil inlet 901 and a second oil outlet 902. The second oil inlet 901 is connected with the first oil outlet 802, and the second oil outlet 902 is connected with the first oil inlet 801;

[0044] The driving end 7 is provided with a hydraulic oil circulating mechanism for driving the driving end 7 to operate;

[0045] The hydraulic oil circulating mechanism comprises a power circulation part and a temperature controller for opening and adjusting the output flow of the power circulation part according to the temperature of the reducer gear oil cavity 1. Specifically,

[0046] The power circulation part comprises a hydraulic oil tank 11, a plunger pump 12, a pressure reducing valve 13 and a multi-position proportional directional valve 14 connected in sequence; the multi-position proportional directional valve 14 is connected with the driving end 7 and the hydraulic oil tank 11 respectively, wherein the driving end 7 comprises an oil inlet A701 and an oil outlet B702, the plunger pump 12 is provided with a third oil inlet 1201 and a third oil outlet 1202, and the pressure reducing valve 13 is provided with an oil inlet P1301 and a fourth oil outlet 1302;

[0047] The multi-position proportional directional valve 14 is a two-position proportional directional valve, and is provided with a fourth oil inlet 1401, a return oil port T1402, a fifth oil inlet 1403 and a fifth oil outlet 1404; when the multi-position proportional directional valve 14 is not powered, the fourth oil inlet 1401 is disconnected with the fifth oil outlet 1404, and the fifth oil inlet 1403 is communicated with the return oil port T1402; when the multi-position proportional directional valve 14 is powered, the fourth oil inlet 1401 is communicated with the fifth oil outlet 1404, and the fifth oil inlet 1403 is communicated with the return oil port T1402;

[0048] In order to protect the plunger pump 12 and the pressure reducing valve 13 of the power circulation part, a high-pressure filter 15 is further arranged between the plunger pump 12 and the pressure reducing valve 13; the high-pressure filter 15 is provided with a sixth oil inlet 1501 and a sixth oil outlet 1502;

[0049] The third oil inlet 1201 is connected with the hydraulic oil tank 11, the third oil outlet 1202 is connected with the sixth oil inlet 1501, the sixth oil outlet 1502 is connected with the oil inlet P1301, the fourth oil outlet 1302 is connected with the fourth oil inlet 1401, the fifth oil outlet 1404 is connected with the oil inlet A701, the oil outlet B702 is connected with the fifth oil inlet 1403, and the return oil port T1402 is connected with the hydraulic oil tank 11;

[0050] The temperature controller comprises a controller and a temperature sensor 10, the controller is electrically connected with the temperature sensor 10, the temperature sensor 10 is installed in the gear oil cavity 1 of the speed reducer, and the controller is electrically connected with the multi-position proportional directional valve 14;

[0051] In the embodiment, the temperature sensor 10 is a temperature sensor of TE brand and PT1000 model; when the oil temperature of the gear oil in the gear oil cavity 1 of the speed reducer exceeds 80℃, the controller controls the multi-position proportional directional valve 14 to be powered, the coil input current is 600 mA, the fourth oil inlet 1401 is communicated with the fifth oil outlet 1404, and the fifth oil inlet 1403 is communicated with the return oil port T1402; according to a preset program, if the oil temperature of the gear oil is greater than 85℃, the output flow of the multi-position proportional directional valve 14 is increased.

[0052] In order to keep the pressure balance inside the gear oil cavity 1 of the speed reducer, the oil return pipe 3 is further connected with a pressure stabilizing mechanism, specifically: the pressure stabilizing mechanism comprises a regenerative cylinder 16 and a breather tank 17; one end of the regenerative cylinder 16 is connected with the oil return pipe 3, the other end is connected with the breather tank 17, the breather tank 17 is communicated with the ambient atmospheric pressure, so as to achieve the effect of adjusting and stabilizing the internal pressure of the gear oil cavity 1 of the speed reducer. Example 3

[0053] A mechanical road surface cold recycling machine comprises the gear oil heat dissipation system of the speed reducer as described above.

[0054] Working principle

[0055] When the temperature controller obtains that the oil temperature inside the gear oil cavity 1 of the speed reducer exceeds 80 DEG C, the multi-position proportional directional valve 14 is powered on, the hydraulic oil output by the plunger pump 12 is filtered through the high-pressure filter 15, and then enters the pressure reducing valve 13 and the multi-position proportional directional valve 14, the hydraulic oil drives the driving end 7 of the hydraulic gear oil pump 4 to rotate and drives the executing end 8 to carry out the circulating gear oil operation, the gear oil is filtered through the gear oil filter 5 and cooled by the radiator 6, and then returns to the gear oil cavity 1 of the speed reducer, and the gear oil is repeatedly circulated, so that the continuous heat dissipation effect is achieved; according to the preset program, if the gear oil temperature is greater than 85 DEG C, the output flow of the multi-position proportional directional valve 14 is increased.

[0056] In the description of the utility model, it is to be explained that, unless another explicit stipulation and limitation, the term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two elements inside the intercommunication. For ordinary skilled person in the art, the above-mentioned terms can be understood in the specific meaning in the utility model by specific circumstances.

[0057] The above only is the preferred implementation way of the utility model, it should be pointed out that, for ordinary skilled person in the art, on the premise that without departing from the technical principle of the utility model, can also make several improvements and deformations, these improvements and deformations also should be regarded as the protection scope of the utility model.

Claims

1. A gear oil cooling system for a reducer, characterized in that: It comprises an oil outlet pipe (2) and an oil return pipe (3) installed outside the gear oil chamber (1) of the reducer, a hydraulic gear oil pump (4), a gear oil filter (5), and a radiator (6) which are sequentially connected in series to the oil outlet pipe (2); The radiator (6) is connected to the oil return pipe (3); The hydraulic gear oil pump (4) comprises a driving end (7) and an executing end (8), wherein the driving end (7) is transmission-connected to the executing end (8); The execution end (8) is provided with a first oil inlet (801) and a first oil outlet (802), wherein the first oil inlet (801) is connected to the oil outlet pipe (2), and the first oil outlet (802) is connected to the gear oil filter (5); The driving end (7) is provided with a hydraulic oil circulation mechanism for driving the driving end (7) to operate; the hydraulic oil circulation mechanism comprises a power circulation part and a temperature controller electrically connected to the power circulation part.

2. The gear oil cooling system for a reducer according to claim 1, characterized in that: The oil outlet pipe (2) is also provided with a one-way valve (9) for regulating the back pressure of the oil return pipe (3).

3. The gear oil cooling system for a reducer according to claim 2, characterized in that: The one-way valve (9) is provided with a second oil inlet (901) and a second oil outlet (902); the second oil inlet (901) is connected to the first oil outlet (802), and the second oil outlet (902) is connected to the first oil inlet (801).

4. The gear oil cooling system for a reducer according to claim 1, characterized in that: The oil return pipe (3) is also connected to a pressure stabilizing mechanism for maintaining pressure balance inside the reducer gear oil chamber (1).

5. The gear oil cooling system for a reducer according to claim 4, characterized in that: The pressure stabilizing mechanism comprises a regeneration cylinder (16) and a breathable tank (17); one end of the regeneration cylinder (16) is connected to the oil return pipe (3), and the other end is connected to the breathable tank (17).

6. The gear oil cooling system for a reducer according to claim 1, characterized in that: The power circulation unit comprises a hydraulic oil tank (11), a plunger pump (12), a pressure reducing valve (13) and a multi-position proportional directional valve (14) which are connected in sequence; the multi-position proportional directional valve (14) is respectively connected to the driving end (7) and the hydraulic oil tank (11).

7. The gear oil cooling system for a reducer according to claim 6, characterized in that: The temperature controller comprises a controller and a temperature sensor (10) arranged in the gear oil chamber (1) of the reducer; the controller is electrically connected to the temperature sensor (10) and the multi-position proportional directional valve (14), respectively; the temperature sensor (10) is a PT1000 model.

8. The gear oil cooling system for a reducer according to claim 6, characterized in that: The driving end (7) includes an oil inlet A (701) and an oil outlet B (702), the plunger pump (12) is provided with a third oil inlet (1201) and a third oil outlet (1202), and the pressure reducing valve (13) is provided with an oil inlet P (1301) and a fourth oil outlet (1302); The multi-position proportional directional valve (14) is a two-position proportional directional valve. The multi-position proportional directional valve (14) is provided with a fourth oil inlet (1401), an oil return port T (1402), a fifth oil inlet (1403) and a fifth oil outlet (1404). When the multi-position proportional directional valve (14) is not energized, the fourth oil inlet (1401) and the fifth oil outlet (1404) are disconnected, and the fifth oil inlet (1403) is connected to the oil return port T (1402). When the multi-position proportional directional valve (14) is energized, the fourth oil inlet (1401) and the fifth oil outlet (1404) are connected, and the fifth oil inlet (1403) is connected to the oil return port T (1402). The third oil inlet (1201) is connected to the hydraulic oil tank (11), the third oil outlet (1202) is connected to the oil inlet P (1301), the fourth oil outlet (1302) is connected to the fourth oil inlet (1401), the fifth oil outlet (1404) is connected to the oil inlet A (701), the oil outlet B (702) is connected to the fifth oil inlet (1403), and the oil return port T (1402) is connected to the hydraulic oil tank (11).

9. The gear oil cooling system for a reducer according to claim 8, characterized in that: A high-pressure filter (15) is further provided between the plunger pump (12) and the pressure reducing valve (13); the high-pressure filter (15) is provided with a sixth oil inlet (1501) and a sixth oil outlet (1502); the sixth oil inlet (1501) is connected to the third oil outlet (1202), and the sixth oil outlet (1502) is connected to the oil inlet P (1301).

10. A mechanical road cold regeneration machine, characterized in that: It comprises the reducer gear oil cooling system according to any one of claims 1 to 9.

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