Sealing device for hydraulic oil tank of excavator

Abstract

The utility model discloses an excavator hydraulic oil tank sealing device which comprises an oil port welded to the top of a hydraulic oil tank, a sealing cover is clamped to the top of the oil port, a fixing shell is fixedly connected to the top of the sealing cover, and an extrusion assembly is arranged in an inner cavity of the fixing shell. The extrusion assembly comprises a gear rotationally connected to an inner cavity of the fixing shell, a lower ratchet disc is fixedly connected to the top of the surface of the gear, slidable racks are arranged on the front side and the rear side of the inner cavity of the fixing shell correspondingly, the gear is meshed with the racks, and fixing lugs are welded to the two sides of the top of the oil port correspondingly. The oil port is sealed through the arrangement of the sealing cover, then the sealing cover is extruded and pushed through the cooperative use of the fixing shell and the extrusion assembly, and meanwhile the extrusion depth of the sealing cover is limited and locked under the cooperative use of the locking assembly, so that the purposes of extrusion sealing and convenient opening and closing can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic oil tank processing technical field, especially relate to a hydraulic oil tank sealing device of excavator. BACKGROUND

[0002] Hydraulic oil tank is an important part in hydraulic system, is mainly used to store hydraulic oil, it is usually a closed container, generally by metal (such as steel plate) or high-strength plastic is made, shape is various, common have rectangle, cylindrical etc., its size according to the scale of hydraulic system and oil demand, meet the several liters capacity of small equipment to the several thousand liters capacity of large engineering machinery.

[0003] Because excavator is in the process of operation, hydraulic oil tank is shaken more, and when the threaded cap or the buckle type sealing structure is sealed to the oil port, the demand of the operation of excavator under complex working conditions cannot be met, and the threaded wear caused by vibration, oil dirt and other factors can lead to the situation that the sealing is not strict, therefore, a hydraulic oil tank sealing device of excavator is needed, which uses the way of one-way locking and inclined surface extrusion to pressurize and fix the sealing cover, so as to ensure the good sealing performance of the hydraulic oil tank under various working conditions and protect the normal operation of the excavator. SUMMARY

[0004] The utility model discloses a hydraulic oil tank sealing device of excavator, adopts the way of one-way locking and inclined surface extrusion to pressurize and fix the sealing cover, so as to ensure the good sealing performance of the hydraulic oil tank under various working conditions and protect the normal operation of the excavator, to solve the above technical problem.

[0005] The utility model discloses a hydraulic oil tank sealing device of excavator, adopts the way of one-way locking and inclined surface extrusion to pressurize and fix the sealing cover, so as to ensure the good sealing performance of the hydraulic oil tank under various working conditions and protect the normal operation of the excavator, to solve the above technical problem.

[0006] Preferably, the locking assembly comprises a sliding frame slidingly connected to the surface of the fixed shell, the bottom of the sliding frame is fixedly connected with an upper ratchet disc, and the upper ratchet disc is engaged with the lower ratchet disc.

[0007] Preferably, the top of the upper ratchet disc is welded with a spring, and the top end of the spring is welded with the top of the inner cavity of the fixed shell.

[0008] Preferably, the front side and the rear side of the fixed shell are provided with rectangular sliding grooves, and the sliding frame is slidingly connected in the inner cavities of the rectangular sliding grooves.

[0009] Preferably, the front side of the fixed shell is provided with a rectangular slot, and the inner cavity of the rectangular slot is provided with a rotatable hand lever, and the rear end of the hand lever penetrates into the inner cavity of the fixed shell and is welded with the lower ratchet disc.

[0010] Preferably, a rotating arm is welded at the rear side of the top of the oil port, and the front end of the rotating arm is rotatably connected with the sealing cover.

[0011] The utility model discloses beneficial effect is:

[0012] 1. The utility model discloses the setting of the sealing cover is sealed to the oil port, then through the cooperation of fixed shell and extrusion assembly, the extrusion of sealing cover is advanced, and under the cooperation of locking assembly, the extrusion depth of sealing cover is positioned and locked, that is, the purpose of extrusion sealing and convenient opening and closing can be reached.

[0013] 2. The utility model discloses the setting of locking assembly, wherein the cooperation of sliding frame and spring plays the role of advancing the upper ratchet disc, and under the use of the upper ratchet disc, the lower ratchet disc is meshed and locked, and the gear is one-way locked, thereby preventing the lower ratchet disc and the gear from rotating.

[0014] 3. The utility model discloses the cooperation of rectangular slot and hand lever facilitates the driving of the lower ratchet disc by the user, and the gear can be rotated, and the two racks are meshed and driven. DRAWINGS

[0015] Among them:

[0016] Figure 1 It is a top view schematic diagram of one embodiment of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the oil port, the sealing cover, the fixed shell and the extrusion assembly of one embodiment of the utility model;

[0018] Figure 3 It is a front view sectional view of the sealing cover, the fixed shell, the extrusion assembly and the locking assembly of one embodiment of the utility model;

[0019] Figure 4 It is a three-dimensional explosion view of the fixed shell, the extrusion assembly and the locking assembly of one embodiment of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the oil port of one embodiment of the utility model.

[0021] The components represented by the reference numerals in the drawings are listed as follows:

[0022] 1, hydraulic oil tank, 2, oil port, 3, sealing cover, 4, fixed shell, 5, extrusion assembly, 51, gear, 52, lower ratchet disc, 53, rack, 54, fixed lug, 55, wedge-shaped extrusion block, 6, locking assembly, 61, sliding frame, 62, upper ratchet disc, 63, spring, 64, rectangular sliding groove, 7, rectangular slot, 8, hand lever, 9, rotating arm. DETAILED DESCRIPTION

[0023] Hereinafter, an embodiment of the excavator hydraulic oil tank sealing device of the utility model will be described with reference to the drawings.

[0024] Figures 1-5 The excavator hydraulic oil tank sealing device of one embodiment of the utility model is shown, comprising the oil port 2 welded on the top of the hydraulic oil tank 1: the top of the oil port 2 is clamped with the sealing cover 3, the rear side of the top of the oil port 2 is welded with the rotating arm 9, the front end of the rotating arm 9 is rotationally connected with the sealing cover 3, the top of the sealing cover 3 is fixedly connected with the fixed shell 4, the inner cavity of the fixed shell 4 is provided with the extrusion assembly 5, the extrusion assembly 5 comprises the gear 51 rotationally connected in the inner cavity of the fixed shell 4, the top of the surface of the gear 51 is fixedly connected with the lower ratchet disc 52, the front side of the fixed shell 4 is provided with the rectangular slot 7, the inner cavity of the rectangular slot 7 is provided with the rotatable hand lever 8, the rear end of the hand lever 8 penetrates into the inner cavity of the fixed shell 4 and is welded with the lower ratchet disc 52, through the cooperation of the rectangular slot 7 and the hand lever 8, it is convenient for the user to drive the lower ratchet disc 52, and then the gear 51 can rotate, the two racks 53 are engaged and transmitted, the front side and the rear side of the inner cavity of the fixed shell 4 are provided with the slidable rack 53, the gear 51 and the rack 53 are engaged, the two sides of the top of the oil port 2 are welded with the fixed lug 54, the ends of the two racks 53 away from each other are welded with the wedge-shaped extrusion block 55, the wedge-shaped extrusion block 55 is inserted into the inner cavity of the fixed lug 54, the top of the fixed shell 4 is provided with the locking assembly 6, the locking assembly 6 comprises the sliding frame 61 slidingly connected on the surface of the fixed shell 4, the bottom of the sliding frame 61 is fixedly connected with the upper ratchet disc 62, the upper ratchet disc 62 is engaged with the lower ratchet disc 52, the top of the upper ratchet disc 62 is welded with the spring 63, the top end of the spring 63 is welded with the top of the inner cavity of the fixed shell 4, the front side and the rear side of the fixed shell 4 are provided with the rectangular sliding groove 64, the sliding frame 61 is slidingly connected in the inner cavity of the rectangular sliding groove 64, through the setting of the locking assembly 6, the cooperation of the sliding frame 61 and the spring 63, the upper ratchet disc 62 is pushed, at the same time, under the use of the upper ratchet disc 62, the lower ratchet disc 52 is engaged and locked, the gear 51 is unidirectionally locked, thereby preventing the lower ratchet disc 52 and the gear 51 from rotating.

[0025] Working principle: the utility model for use, the user through the rotation sealing cover 3, make sealing cover 3 in the limit guiding of rotating arm 9 accurately and engage in the top of oil port 2, then the user rotates hand lever 8, hand lever 8 in the process of rotation drive lower ratchet disc 52 occurs rotation, lower ratchet disc 52 in the process of rotation drive gear 51 occurs rotation, because gear 51 and two racks 53 are in meshing transmission state, make two racks 53 occur back to move, and then make two wedge extrusion blocks 55 occur back to move, make two wedge extrusion blocks 55 respectively and engage in the inner chamber of two fixed ears 54, simultaneously under the cooperation of the inclined plane extrusion of wedge extrusion block 55 and the inner wall of fixed ear 54, fixed shell 4 obtains the extrusion pressure of downward movement, and then make sealing cover 3 can be tightly pressed in the top of oil port 2, seal oil port 2, in the process of gear 51 rotation, gear 51 passes through the teeth of lower ratchet disc 52 top and causes the upper ratchet disc 62 to be stirred, make the upper ratchet disc 62 under the elastic force of spring 63, occur reciprocating up and down movement, and make the upper ratchet disc 62 after gear 51 stop rotation and lower ratchet disc 52 occur meshing, one-way lock lower ratchet disc 52, prevent gear 51 from turning, when the user needs to open sealing cover 3, the user pulls up sliding frame 61, make the upper ratchet disc 62 upward displacement and lower ratchet disc 52 disengage meshing, simultaneously to spring 63 cause compression, then the user again reverse rotation hand lever 8, to two wedge extrusion blocks 55 cause opposite sliding, make it exit the inner chamber of fixed ear 54 can.

[0026] In conclusion: the excavator hydraulic oil tank sealing device, through the setting of sealing cover 3, seal oil port 2, then through the cooperation of fixed shell 4 and extrusion assembly 5, extrude sealing cover 3 and advance, simultaneously under the cooperation of locking assembly 6, the extrusion depth of sealing cover 3 is limit locked, can reach the purpose of extrusion sealing and convenient opening and closing.

Claims

1. A sealing device for an excavator hydraulic oil tank, characterized in that: The utility model provides a hydraulic oil tank, including the oil port (2) welded in the top of hydraulic oil tank (1), the top of oil port (2) is clamped with sealing cover (3), the top of sealing cover (3) is fixedly connected with fixed shell (4), the inner chamber of fixed shell (4) is provided with extrusion assembly (5), extrusion assembly (5) includes the gear (51) rotationally connected in the inner chamber of fixed shell (4), the top of gear (51) surface is fixedly connected with lower ratchet disc (52), the front side and rear side of the inner chamber of fixed shell (4) are provided with slidable rack (53), gear (51) and rack (53) are engaged, both sides of the top of oil port (2) are welded with fixed lug (54), and the end opposite of two rack (53) is welded with wedge extrusion block (55) respectively, and wedge extrusion block (55) inserts in the inner chamber of fixed lug (54), the top of fixed shell (4) is provided with locking assembly (6).

2. The excavator hydraulic tank sealing device of claim 1, wherein, The locking assembly (6) includes a sliding frame (61) slidingly connected to the surface of the fixed shell (4), and the bottom of the sliding frame (61) is fixedly connected with an upper ratchet disc (62).

3. The excavator hydraulic tank sealing device of claim 2, wherein, The top of the upper ratchet disc (62) is welded with a spring (63), and the top end of the spring (63) is welded with the top of the inner chamber of the fixed shell (4).

4. The excavator hydraulic tank sealing device of claim 3, wherein, The front side and rear side of the fixed shell (4) are provided with a rectangular sliding groove (64), and the sliding frame (61) is slidingly connected in the inner chamber of the rectangular sliding groove (64).

5. The excavator hydraulic tank seal apparatus of claim 4, wherein, The front side of the fixed shell (4) is provided with a rectangular slot (7), and the inner chamber of the rectangular slot (7) is provided with a rotatable hand lever (8), and the rear end of the hand lever (8) penetrates into the inner chamber of the fixed shell (4) and is welded with the lower ratchet disc (52).

6. A hydraulic oil tank sealing device for a backhoe according to claim 5, wherein The rear side of the top of the oil port (2) is welded with a rotating arm (9), and the front end of the rotating arm (9) is rotatably connected with the sealing cover (3).

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