Oil storage and suction device of gearbox of backhoe loader

Abstract

The utility model discloses an oil storage and suction device of a gearbox of a backhoe loader. A sealing box is welded at the upper end of a heightening frame; the overflow hole joint is inserted into and welded with an oil overflow hole formed in the left upper side of the sealing box; the oil inlet connector is inserted into and welded with an oil inlet formed in the top of the sealing box; an oil outlet joint is inserted into and welded with an oil outlet in the right lower side of the sealing box, the right end of the oil outlet joint is fixed with the left end of a transparent hose through a hose clamp, and the right end of the transparent hose is fixed with the left end of an oil suction pipe joint through a hose clamp; the outer circle of the oil suction pipe connector is connected with a fixing plate with four bolt holes in a welded mode, and the fixing plate is locked on the box body through four bolts and a gasket in the working process. And the O-shaped rubber ring is arranged on a sealing groove of an inner cavity at the right end of the oil suction pipe joint. The test device is simple and compact in structure, convenient to operate and reliable to use, and can prevent transmission oil in the oil tank from being polluted due to the contact between the transmission oil in the oil tank and the outer surfaces of the box body and the box cover casting when the gearbox of the backhoe loader simulates the bench test of the real use condition of the whole machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator gearbox auxiliary device technical field, concretely relates to a kind of oil storage oil suction tool used when excavator gearbox is on test stand. BACKGROUND

[0002] Excavator gearbox, as important component in excavator transmission system, its working principle is to control transmission oil by electromagnetic valve to make each clutch hub gear work, excavator gearbox must be carried out test stand test of analog whole machine working condition before product delivery, to obtain relevant performance data, test stand test needs to guarantee the cleanliness of transmission oil.Existing technology excavator gearbox when test stand, generally adopt following two oil supply modes: one is that oil inlet pipe is directly articulated with the oil suction port of excavator gearbox to carry out oil transmission, its defect is that the transmission oil internal circulation mode of gearbox in whole machine actual use working condition cannot be simulated, resulting in that the torque converter core internal pressure data measured in test is inaccurate;Second, the oil suction port of excavator gearbox is soaked in oil tank to suck oil, its defect is that the iron filings, foreign matters etc.on the outer surface of gearbox body and cover casting are easily fused into transmission oil in oil tank, affect the cleanliness of transmission oil. SUMMARY

[0003] The utility model aims at overcoming above-mentioned defect, provide a kind of excavator gearbox's oil storage oil suction device of simple and compact structure, easy operation, reliable use, make excavator gearbox when analog whole machine real use working condition test stand, can avoid the situation that transmission oil in oil tank and gearbox body and cover casting outer surface contact cause gearbox internal transmission oil to be contaminated.

[0004] To realize above-mentioned purpose, the utility model excavator gearbox's oil storage oil suction device includes overflow hole joint 1, oil inlet hole joint 2, sealed case 3, oil outlet hole joint 4, throat clamp 5, transparent hose 6, pad support 7, bolt 8, washer 9, fixed plate 10, oil suction pipe joint 11 and rubber o-ring 12;The sealed case 3 is welded on pad support 7 upper end;The overflow hole joint 1 is inserted into the oil overflow hole arranged on the left upper side of sealed case 3 and is weldedly connected;The oil inlet hole joint 2 is inserted into the oil inlet hole arranged on the top of sealed case 3 and is weldedly connected;The oil outlet hole joint 4 is inserted into the oil outlet hole arranged on the right lower side of sealed case 3 and is weldedly connected, the right end of this oil outlet hole joint 4 is fixed with the left end of transparent hose 6 through throat clamp 5, the right end of this transparent hose 6 is fixed with the left end of oil suction pipe joint 11 with throat clamp 5;The outer circle of oil suction pipe joint 11 is weldedly connected with the fixed plate 10 with four bolt holes, four bolts 8 and four washers 9 are used to lock the fixed plate 10 on gearbox body 13 in working condition;The rubber o-ring 12 is installed on the sealing groove in the right end inner cavity of oil suction pipe joint 11.

[0005] In operation, the right end of the oil suction pipe joint 11 is inserted into the oil suction hole of the gearbox body 13, and is aligned and sleeved into the outer circle of the oil suction pipe welding 14, then the fixing plate 10 is locked on the gearbox body 13 by four bolts 8 and four gaskets 9, and the connection between the oil suction pipe joint 11 and the oil suction pipe welding 14 is sealed by the rubber o-ring 12.

[0006] The oil storage and suction device of the gearbox of the excavator loader has the following technical features and beneficial effects.

[0007] 1. The oil level height is simulated to be the same as the whole machine by the height-raising frame 7, the overflow hole joint 1 can keep the internal oil pressure of the sealed tank 3 in internal circulation under the simulated working condition of the whole machine, the problem of large difference between the gearbox bench test and the actual working condition of the whole machine in the prior art is solved, and the internal pressure data of the torque converter core measured in the test is accurate and reliable.

[0008] 2. Each component has a sealing effect on the oil transmission, not only improves the oil suction efficiency of the gearbox during the test run, but also avoids the direct contact of the gearbox cover and the outer surface of the tank body casting with the transmission oil in the oil tank during the test run of the gearbox, greatly improves the cleanliness of the transmission oil, and solves the problem that the transmission of the gearbox is affected by the poor oil suction efficiency of the gearbox during the bench test and the iron filings and foreign matters adhered to the outer surface of the tank body casting of the gearbox cover during the test run of the gearbox.

[0009] 3. The structure is simple and compact, easy and efficient to assemble and operate, and reliable in use. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic view of the main section of the installation structure of the oil storage and suction device of the gearbox of the excavator loader in operation.

[0011] Fig. 1 is a schematic view of the main section of the installation structure of the oil storage and suction device of the gearbox of the excavator loader in operation. DETAILED DESCRIPTION

[0012] The specific embodiments of the oil storage and suction device of the gearbox of the excavator loader will be further described in detail below with reference to the drawings.

[0013] Figure 1As shown, the oil storage and suction device of the gearbox of the excavator loader comprises an overflow hole joint 1, an oil inlet hole joint 2, a sealing box 3, an oil outlet hole joint 4, a throat clamp 5, a transparent hose 6, a cushion support 7, bolts 8, gaskets 9, a fixed plate 10, an oil suction pipe joint 11 and a rubber O-shaped ring 12; the sealing box 3 is welded on the upper end of the cushion support 7; the overflow hole joint 1 is inserted into the oil overflow hole arranged on the upper left side of the sealing box 3 and is welded and connected; the oil inlet hole joint 2 is inserted into the oil inlet hole arranged on the top of the sealing box 3 and is welded and connected; the oil outlet hole joint 4 is inserted into the oil outlet hole arranged on the lower right side of the sealing box 3 and is welded and connected, the right end of the oil outlet hole joint 4 is fixed with the left end of the transparent hose 6 through the throat clamp 5, and the right end of the transparent hose 6 is fixed with the left end of the oil suction pipe joint 11 through the throat clamp 5; the outer circle of the oil suction pipe joint 11 is welded and connected with the fixed plate 10 with four bolt holes, and the fixed plate 10 is locked on the gearbox box body 13 through four bolts 8 and four gaskets 9 during work; the rubber O-shaped ring 12 is installed on the sealing groove in the right end inner cavity of the oil suction pipe joint 11.

[0014] During work, the rubber O-shaped ring 12 is placed in the sealing groove of the oil suction pipe joint 12 in advance; during the test run, the oil inlet pipe is connected with the oil inlet hole joint 2, the right end of the oil suction pipe joint 11 is inserted into the box body from the oil suction hole of the gearbox box body 10, the fixed plate 10 is fixed on the gearbox box body 13 of the excavator loader after the right end of the oil suction pipe joint 11 is aligned and sleeved into the outer circle of the oil suction pipe joint 12, and four bolts 8 and four gaskets 9 are used; transmission oil flows through the oil inlet hole joint 2, the sealing box 3, the oil outlet pipe joint 5, the transparent hose 6 and the oil suction pipe joint 11 into the oil suction pipe joint 13 and enters the inside of the transmission pump of the gearbox.

Claims

1. An oil storage and pickup device for a transmission of a backhoe loader characterized by: It includes overflow hole joint (1), oil inlet hole joint (2), sealing box (3), oil outlet hole joint (4), throat clamp (5), transparent hose (6), pad bracket (7), bolt (8), gasket (9), fixed plate (10), oil suction pipe joint (11) and rubber o-ring (12);The sealing box (3) is welded on the upper end of the pad bracket (7);The overflow hole joint (1) is inserted into the oil overflow hole provided on the upper left side of the sealing box (3) and is welded and connected;The oil inlet hole joint (2) is inserted into the oil inlet hole provided on the top of the sealing box (3) and is welded and connected;The oil outlet hole joint (4) is inserted into the oil outlet hole provided on the lower right side of the sealing box (3) and is welded and connected, the right end of the oil outlet hole joint (4) is fixed with the left end of the transparent hose (6) through the throat clamp (5), the right end of the transparent hose (6) is fixed with the left end of the oil suction pipe joint (11) through the throat clamp (5);The outer circle of the oil suction pipe joint (11) is welded and connected with the fixed plate (10) with four bolt holes, four bolts (8) and four gaskets (9) are used to lock the fixed plate (10) on the gearbox box body (13) during work;The rubber o-ring (12) is installed on the sealing groove in the right end inner cavity of the oil suction pipe joint (11).

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