Oil filling structure of hydraulic oil tank

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a hydraulic oil tank refueling structure, which comprises a frame body, a hydraulic oil tank, a hydraulic oil tank and a hydraulic oil tank, and is characterized in that the frame body comprises two wall bodies oppositely arranged along a first direction; a containing space is formed between the two wall bodies in a spaced mode in the first direction. The oil tank body is mounted in the accommodating space; the oil tank body has an oil filling port; the interior of the connecting pipe is hollow, a first channel is formed, and the first channel communicates with the oil injection port; the mounting seat is arranged at one end, far away from the oil filling port, of the connecting pipe and is connected with the wall body; the mounting seat is higher than the oil injection port in the third direction; the mounting seat is provided with a second channel, and the second channel is communicated with the first channel; the cover body is detachably connected with the mounting base, and the cover body is suitable for sealing the second channel; a through hole is formed in the wall body in the first direction, and the through hole is suitable for avoiding the cover body. According to the oiling structure of the hydraulic oil tank, the convenience of hydraulic oil filling during maintenance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a hydraulic oil tank refueling structure. Background Art

[0002] The oil tank of engineering machinery is generally provided with a filling cap, which is used to fill the hydraulic oil. Figure 1 As shown, an oil filling port is usually opened on the top wall of the oil tank 200, and the oil filling port is covered by an oil filling cap 400, as shown in FIG. Figure 2 As shown, when the hydraulic oil tank 200 is built into the frame 100 , since the frame 100 needs to be assembled with the seat 300 , it is inconvenient to refill the hydraulic oil during maintenance. Utility Model Content

[0003] In view of this, the utility model provides a hydraulic oil tank refueling structure to solve the problem that the existing engineering machinery oil tank is inconvenient to refill the hydraulic oil during repair and maintenance.

[0004] The hydraulic oil tank refueling structure provided by the utility model has a first direction, a second direction and a third direction intersecting in pairs, including:

[0005] The frame body comprises two walls arranged opposite to each other along a first direction; a receiving space is formed between the two walls along the first direction;

[0006] The oil tank body is installed in the accommodating space; the oil tank body has an oil filling port;

[0007] A connecting pipe having a hollow interior and forming a first channel, the first channel being connected to the oil filling port;

[0008] A mounting seat is provided at an end of the connecting pipe away from the oil filling port, the mounting seat being connected to the wall; the mounting seat is positioned higher than the oil filling port along the third direction; the mounting seat has a second channel, the second channel being connected to the first channel;

[0009] a cover body, detachably connected to the mounting seat, and adapted to close the second passage;

[0010] The wall is opened along the first direction to form a through hole, and the through hole is suitable for avoiding the cover body.

[0011] Beneficial effects: The hydraulic oil tank refueling structure provided by the utility model mainly includes a frame body, a tank body, a connecting pipe, a cover body and a mounting seat. The cover body is led out to the outside of the frame body through the connecting pipe. A mounting seat is provided at the end of the connecting pipe away from the tank body. The mounting seat is connected to the wall of the frame body, and the position of the mounting seat along the third direction is higher than the oil filling port. A through hole is formed in the wall along the first direction. If hydraulic oil needs to be added during maintenance, the cover body can be opened at the through hole to complete the filling of the hydraulic oil, avoiding the disassembly and assembly of the vehicle seat, and improving the convenience of hydraulic oil filling during maintenance.

[0012] In an optional embodiment, the wall body is provided with a first mounting hole, and the first mounting hole is spaced apart from the through hole; the outer peripheral wall of the mounting seat is provided with a fixing portion, and the fixing portion is provided with a second mounting hole;

[0013] The hydraulic oil tank refueling structure also includes a first fastener, which is installed in the first mounting hole and the second mounting hole. The first fastener is suitable for fixedly connecting the fixing part to the wall.

[0014] Beneficial effect: It avoids the shaking of the mounting seat when the cover body is disassembled and assembled during maintenance, prevents the mounting seat from being separated from the position of the through hole, and is beneficial to improving the stability of the hydraulic oil tank refueling structure.

[0015] In an optional embodiment, the fuel tank body includes a top wall and a bottom wall arranged opposite to each other along the third direction, and a side wall extending along the third direction toward the top wall along a peripheral edge of the bottom wall, wherein the bottom wall is arranged on a side of the top wall away from the through hole along the third direction;

[0016] An oil filling port is formed on the top wall;

[0017] Alternatively, an oil filling port is formed on the side wall, and the oil filling port is arranged on a side of the side wall close to the top wall along the third direction.

[0018] Beneficial effect: It can prevent oil and gas from being discharged and facilitate the filling of hydraulic oil during repair and maintenance.

[0019] In an optional embodiment, the mounting seat is arranged on one side of the wall body close to the tank body along the first direction; a side door is movably provided on one side of the wall body, the side door is connected to the wall body by a hinge, and the side door is suitable for covering the through hole.

[0020] Beneficial effects: The side door is connected to the wall through a hinge. When adding hydraulic oil during maintenance, the side door can be opened, and the cover body can be opened at the through hole to complete the filling of the hydraulic oil, avoiding the disassembly and assembly of the vehicle seat, and improving the convenience of hydraulic oil filling during maintenance; after the hydraulic oil is filled, the cover body and the mounting base are locked, and then the side door is used to seal the through hole to prevent external foreign matter from entering the accommodating space.

[0021] In an optional embodiment, the side door comprises a lock, which is suitable for locking the side door and the wall when the side door is closed.

[0022] Beneficial effects:

[0023] In an optional embodiment, a first sealing member is provided on a side of the side door facing the wall, and the first sealing member is suitable for sealingly connecting the side door to the wall.

[0024] Beneficial effect: The side door is locked to the wall by a lock, and the side door is sealed to the wall by a first seal, thereby effectively preventing external foreign matter from entering the accommodating space, while ensuring the cleanliness of the air replaced by the hydraulic oil tank to a certain extent.

[0025] In an optional embodiment, a first threaded portion is provided at one end of the mounting seat away from the connecting pipe, the cover body has a second threaded portion, and the first threaded portion is threadedly connected to the second threaded portion.

[0026] Beneficial effect: the mounting seat and the cover body can be disassembled and connected, making it easier to add hydraulic oil during repair and maintenance.

[0027] In an optional embodiment, a second sealing member is provided between the mounting seat and the cover body, and the second sealing member is suitable for sealingly connecting the mounting seat and the cover body.

[0028] Beneficial effect: During the threaded cooperation between the first threaded portion and the second threaded portion, the mounting seat and the cover body can compress the second sealing member, thereby sealing the mounting seat and the cover body through the second sealing member, which can prevent oil and gas from being discharged, facilitate the filling of hydraulic oil during maintenance, and prevent external foreign matter from entering the oil tank body.

[0029] In an optional embodiment, the mounting base is provided with a first flange portion at one end away from the connecting pipe, and the first flange portion is provided with a plurality of third mounting holes; the cover body has a second flange portion corresponding to the first flange portion, and the second flange portion is provided with a plurality of fourth mounting holes;

[0030] The hydraulic oil tank refueling structure also includes a second fastener, which is installed in the third mounting hole and the fourth mounting hole. The second fastener is suitable for fixedly connecting the first flange part and the second flange part.

[0031] Beneficial effect: the mounting seat and the cover body can be disassembled and connected, making it easier to add hydraulic oil during repair and maintenance.

[0032] In an optional embodiment, a third sealing member is provided between the first flange portion and the second flange portion, and the third sealing member is suitable for sealingly connecting the mounting seat and the cover body.

[0033] Beneficial effect: During the process of the second fastener fixing the first flange part and the second flange part, the mounting seat and the cover body can compress the third sealing member, thereby sealing the mounting seat and the cover body through the third sealing member, which can prevent oil and gas from being discharged, facilitate the filling of hydraulic oil during maintenance, and prevent external foreign matter from entering the oil tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A three-dimensional schematic diagram of an oil tank in the background art;

[0036] Figure 2 An exploded perspective view of a frame and a seat in the background art;

[0037] Figure 3 This is a three-dimensional diagram of the first hydraulic oil tank refueling structure according to an embodiment of the present utility model, with the side door hidden from view;

[0038] Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0039] Figure 5 for Figure 4 The structural diagram of the wall shown in FIG;

[0040] Figure 6 This is a perspective view of the first hydraulic oil tank refueling structure according to an embodiment of the present invention;

[0041] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0042] Figure 8 A perspective view of the side door and the first sealing member of the first hydraulic oil tank refueling structure according to an embodiment of the present utility model;

[0043] Figure 9 This is a perspective view of the second hydraulic oil tank refueling structure of the utility model embodiment after the frame body is hidden;

[0044] Figure 10 for Figure 9 Assembly drawing of the middle mounting seat, connecting pipe and cover;

[0045] Figure 11 This is a three-dimensional diagram of the third hydraulic oil tank refueling structure of the utility model embodiment after the frame body is hidden;

[0046] Figure 12 for Figure 11 Exploded view of the middle mounting base, connecting tube and cover.

[0047] Description of reference numerals:

[0048] 10. Frame body; 101. Accommodation space; 11. Wall; 111. Through hole; 112. First mounting hole;

[0049] 20. Fuel tank body; 201. Fuel filling port; 21. Top wall; 22. Bottom wall; 23. Side wall;

[0050] 30. Connecting pipe; 301. First channel;

[0051] 40. Cover; 41. Second threaded portion; 42. Second flange portion; 421. Fourth mounting hole;

[0052] 50, mounting seat; 501, second channel; 51, fixing portion; 511, second mounting hole; 52, first threaded portion; 53, first flange portion; 531, third mounting hole;

[0053] 61. First fastener; 62. Second fastener;

[0054] 70. Side door; 71. Locks;

[0055] 81. First sealing member; 82. Second sealing member; 83. Third sealing member;

[0056] 90. Clamp;

[0057] X—first direction; Y—second direction; Z—third direction. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0059] The following combination Figures 3 to 12 , describing the embodiments of the present utility model.

[0060] According to an embodiment of the present utility model, a hydraulic oil tank refueling structure is provided, having a first direction X, a second direction Y, and a third direction Z intersecting in pairs, including:

[0061] Frame body 10, see Figure 3 As shown, it includes two walls 11 arranged opposite to each other along a first direction X, and the two walls 11 can support the vehicle seat; an accommodating space 101 is formed between the two walls 11 along the first direction X;

[0062] The fuel tank body 20 is installed in the accommodation space 101; see Figure 9 As shown, the oil tank body 20 has an oil filling port 201;

[0063] The connecting pipe 30 is hollow inside and forms a first channel 301 , and the first channel 301 is connected to the oil filling port 201 ;

[0064] The mounting base 50 is disposed at an end of the connecting tube 30 away from the oil filling port 201 and is connected to the wall 11. The mounting base 50 is positioned higher than the oil filling port 201 along the third direction Z. The mounting base 50 has a second passage 501 that communicates with the first passage 301.

[0065] The cover 40 is detachably connected to the mounting base 50 and is suitable for closing the second channel 501;

[0066] See Figure 4 As shown, the wall 11 is opened along the first direction X to form a through hole 111 , and the through hole 111 is suitable for avoiding the cover 40 .

[0067] The hydraulic oil tank refueling structure provided by the present invention mainly includes a frame body 10, a tank body 20, a connecting pipe 30, a cover body 40 and a mounting seat 50. The cover body 40 is led to the outside of the frame body 10 through the connecting pipe 30. The end of the connecting pipe 30 away from the tank body 20 is provided with a mounting seat 50. The mounting seat 50 is connected to the wall body 11 of the frame body 10, and the position of the mounting seat 50 along the third direction Z is higher than the oil filling port 201. The wall body 11 is provided with a through hole 111 along the first direction X. If hydraulic oil needs to be added during maintenance, the cover body 40 can be opened at the through hole 111 to complete the filling of the hydraulic oil, avoiding the disassembly and assembly of the vehicle seat, and improving the convenience of hydraulic oil filling during maintenance.

[0068] It should be noted that a ventilation filter can be integrated on the cover body 40, which not only facilitates the filling of hydraulic oil during maintenance, but also avoids oil and gas leakage caused by the low setting position of the ventilation filter on the oil tank body 20. Since the ventilation filter is a standard part, the specific structure of the ventilation filter will not be repeated here.

[0069] In some embodiments, see Figure 5 As shown, the wall 11 is provided with a first mounting hole 112, and the first mounting hole 112 and the through hole 111 can be spaced apart along the third direction Z; see Figure 4 As shown, the outer peripheral wall of the mounting seat 50 is provided with a fixing portion 51, and the fixing portion 51 is provided with a second mounting hole 511;

[0070] The hydraulic oil tank refueling structure further includes a first fastener 61 , which is installed in the first mounting hole 112 and the second mounting hole 511 . The first fastener 61 is suitable for fixing the fixing portion 51 to the wall 11 .

[0071] In this embodiment, the fixing portion 51 is fixedly connected to the wall body 11 by the first fastener 61, thereby avoiding shaking of the mounting seat 50 when the cover body 40 is disassembled and assembled during maintenance, and preventing the mounting seat 50 from being separated from the position of the through hole 111, which is beneficial to improving the stability of the hydraulic oil tank refueling structure.

[0072] Furthermore, the first fastener 61 may be a bolt and nut fastener, or a self-clinching screw.

[0073] In some embodiments, see Figure 9 As shown, the fuel tank body 20 includes a top wall 21 and a bottom wall 22 arranged opposite to each other along the third direction Z, and a side wall 23 extending along the peripheral edge of the bottom wall 22 toward the top wall 21 along the third direction Z, wherein the bottom wall 22 is arranged on a side of the top wall 21 away from the through hole 111 along the third direction Z;

[0074] See also Figure 9 As shown, an oil filling port 201 is formed on the top wall 21;

[0075] Alternatively, see Figure 11 As shown, an oil filling port 201 is formed on the side wall 23 , and the oil filling port 201 is arranged on a side of the side wall 23 close to the top wall 21 along the third direction Z.

[0076] In this embodiment, an oil filling port 201 is formed by opening a top wall 21 or a side wall 23, and the oil filling port 201 is arranged on a side of the side wall 23 close to the top wall 21 along the third direction Z. Then, one end of the connecting pipe 30 is connected to the oil filling port 201, and the other end is connected to the wall 11 of the frame body 10 through the mounting seat 50, so that the cover body 40 is led out to the outside of the frame body 10 through the connecting pipe 30, which can prevent oil and gas from being discharged and facilitate the filling of hydraulic oil during maintenance.

[0077] In some embodiments, see Figure 7As shown, the mounting seat 50 is arranged on one side of the wall 11 close to the tank body 20 along the first direction X; a side door 70 is movably provided on one side of the wall 11, and the side door 70 is connected to the wall 11 by a hinge, and the side door 70 is suitable for covering the through hole 111.

[0078] In this embodiment, the side door 70 is connected to the wall body 11 by a hinge. When filling hydraulic oil during maintenance, the side door 70 can be opened, and the cover body 40 can be opened at the through hole 111 to complete the filling of the hydraulic oil, avoiding the disassembly and assembly of the vehicle seat, and improving the convenience of filling the hydraulic oil during maintenance; after the hydraulic oil is filled, the cover body 40 and the mounting base 50 are locked, and then the side door 70 is used to cover the through hole 111 to prevent external foreign matter from entering the accommodating space 101.

[0079] In some embodiments, see Figure 7 As shown, the side door 70 includes a lock 71 , which is suitable for locking the side door 70 and the wall 11 when the side door 70 is closed.

[0080] In this embodiment, by providing a lock 71 on the side door 70, after the hydraulic oil is filled, the cover body 40 and the mounting base 50 are locked, and then the side door 70 covers the through hole 111, and finally the side door 70 and the wall body 11 are locked by the lock 71, thereby meeting the locking requirement of the hydraulic oil tank refueling structure, and having a cost advantage over the locked integrated refueling cover, while ensuring the cleanliness of the replaced air.

[0081] In some embodiments, please combine Figure 7 and Figure 8 As shown, a first sealing member 81 is provided on the side of the side door 70 facing the wall 11 . The first sealing member 81 is suitable for sealingly connecting the side door 70 to the wall 11 .

[0082] In this embodiment, the side door 70 is locked to the wall body 11 by the lock 71, and the side door 70 is sealed to the wall body 11 by the first seal 81, thereby effectively preventing external foreign matter from entering the accommodating space 101, and at the same time ensuring the cleanliness of the air exchanged into the hydraulic oil tank to a certain extent.

[0083] In some embodiments, see Figure 10 As shown, the mounting seat 50 is provided with a first threaded portion 52 at one end away from the connecting pipe 30 , and the cover body 40 has a second threaded portion 41 , and the first threaded portion 52 is threadedly connected to the second threaded portion 41 .

[0084] In this embodiment, the first threaded portion 52 and the second threaded portion 41 are threadedly engaged with each other, thereby achieving a detachable connection between the mounting seat 50 and the cover body 40 , thereby facilitating the filling of hydraulic oil during repair and maintenance.

[0085] In some embodiments, see Figure 10As shown, a second sealing member 82 is provided between the mounting seat 50 and the cover body 40 , and the second sealing member 82 is suitable for sealingly connecting the mounting seat 50 and the cover body 40 .

[0086] In this embodiment, during the threaded engagement between the first threaded portion 52 and the second threaded portion 41, the mounting seat 50 and the cover body 40 can compress the second sealing member 82, thereby sealing the mounting seat 50 and the cover body 40 through the second sealing member 82, which can prevent the discharge of oil and gas, facilitate the filling of hydraulic oil during maintenance, and prevent external foreign matter from entering the tank body 20.

[0087] Furthermore, please combine Figure 9 and Figure 10 As shown, the connecting pipe 30 is sleeved on one end of the mounting seat 50 away from the first threaded portion 52 , and the connecting pipe 30 and the mounting seat 50 are fastened and locked by a clamp 90 to prevent oil and gas leakage.

[0088] In some embodiments, please combine Figure 11 and Figure 12 As shown, the mounting base 50 is provided with a first flange portion 53 at one end away from the connecting pipe 30, and the first flange portion 53 is provided with a plurality of third mounting holes 531; the cover body 40 has a second flange portion 42 corresponding to the first flange portion 53, and the second flange portion 42 is provided with a plurality of fourth mounting holes 421;

[0089] The hydraulic oil tank refueling structure further includes a second fastener 62 , which is installed in the third mounting hole 531 and the fourth mounting hole 421 . The second fastener 62 is suitable for fixedly connecting the first flange portion 53 and the second flange portion 42 .

[0090] In this embodiment, the first flange portion 53 is fixedly connected to the second flange portion 42 by the second fastener 62, thereby realizing a detachable connection between the mounting base 50 and the cover body 40, and facilitating the filling of hydraulic oil during repair and maintenance.

[0091] In some embodiments, see Figure 12 As shown, a third sealing member 83 is provided between the first flange portion 53 and the second flange portion 42 , and the third sealing member 83 is suitable for sealingly connecting the mounting seat 50 and the cover body 40 .

[0092] In this embodiment, during the process of the second fastener 62 fixing the first flange portion 53 and the second flange portion 42, the mounting seat 50 and the cover body 40 can compress the third sealing member 83, thereby sealing the mounting seat 50 and the cover body 40 through the third sealing member 83, which can not only prevent the discharge of oil and gas, but also facilitate the filling of hydraulic oil during maintenance and repair, and prevent external foreign matter from entering the tank body 20.

[0093] Furthermore, please combine Figure 9and Figure 10 As shown, the connecting pipe 30 is sleeved on one end of the mounting seat 50 away from the first flange portion 53 , and the connecting pipe 30 and the mounting seat 50 are fastened and locked by a clamp 90 to prevent oil and gas leakage.

[0094] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A hydraulic oil tank refueling structure having a first direction (X), a second direction (Y) and a third direction (Z) intersecting each other, characterized in that: include: The frame body (10) comprises two walls (11) arranged opposite to each other along a first direction (X); an accommodation space (101) is formed between the two walls (11) along the first direction (X); An oil tank body (20) is installed in the accommodating space (101); the oil tank body (20) has an oil filling port (201); A connecting pipe (30) having a hollow interior and forming a first channel (301), wherein the first channel (301) is connected to the oil filling port (201); A mounting seat (50) is provided at one end of the connecting pipe (30) away from the oil filling port (201), and the mounting seat (50) is connected to the wall body (11); the position of the mounting seat (50) along the third direction Z is higher than the oil filling port (201); the mounting seat (50) has a second channel (501), and the second channel (501) is connected to the first channel (301); a cover body (40) detachably connected to the mounting seat (50); The wall (11) is opened along a first direction (X) to form a through hole (111), and the through hole (111) is suitable for avoiding the cover (40).

2. The hydraulic oil tank refueling structure according to claim 1, characterized in that: The wall body (11) is provided with a first mounting hole (112), and the first mounting hole (112) is spaced apart from the through hole (111); the outer peripheral wall of the mounting seat (50) is provided with a fixing portion (51), and the fixing portion (51) is provided with a second mounting hole (511); The hydraulic oil tank refueling structure further comprises a first fastener (61), the first fastener (61) being installed in the first mounting hole (112) and the second mounting hole (511), and the first fastener (61) being suitable for fixedly connecting the fixing portion (51) to the wall body (11).

3. The hydraulic oil tank refueling structure according to claim 2, characterized in that: The oil tank body (20) comprises a top wall (21) and a bottom wall (22) arranged opposite to each other along a third direction (Z), and a side wall (23) extending along a peripheral edge of the bottom wall (22) in a direction close to the top wall (21) along the third direction (Z), wherein the bottom wall (22) is arranged on a side of the top wall (21) away from the through hole (111) along the third direction (Z); The oil filling port (201) is formed on the top wall (21); Alternatively, the oil filling port (201) is formed on the side wall (23), and the oil filling port (201) is arranged on a side of the side wall (23) close to the top wall (21) along the third direction (Z).

4. The hydraulic oil tank refueling structure according to claim 2, characterized in that: The mounting seat (50) is arranged on a side of the wall body (11) close to the oil tank body (20) along the first direction (X); a side door (70) is movably provided on one side of the wall body (11), the side door (70) is connected to the wall body (11) by a hinge, and the side door (70) is suitable for covering the through hole (111).

5. The hydraulic oil tank refueling structure according to claim 4, characterized in that: The side door (70) comprises a lock (71), and the lock (71) is suitable for locking the side door (70) and the wall (11) when the side door (70) is closed.

6. The hydraulic oil tank refueling structure according to claim 4, characterized in that: A first sealing member (81) is provided on the side of the side door (70) facing the wall body (11), and the first sealing member (81) is suitable for sealingly connecting the side door (70) and the wall body (11).

7. The hydraulic oil tank refueling structure according to any one of claims 2 to 6, characterized in that: The mounting seat (50) is provided with a first threaded portion (52) at one end away from the connecting pipe (30), the cover body (40) has a second threaded portion (41), and the first threaded portion (52) is threadedly connected to the second threaded portion (41).

8. The hydraulic oil tank refueling structure according to claim 7, characterized in that: A second sealing member (82) is provided between the mounting seat (50) and the cover body (40), and the second sealing member (82) is suitable for sealingly connecting the mounting seat (50) and the cover body (40).

9. The hydraulic oil tank refueling structure according to any one of claims 2 to 6, characterized in that: The mounting seat (50) is provided with a first flange portion (53) at one end away from the connecting pipe (30), and the first flange portion (53) is provided with a plurality of third mounting holes (531); the cover body (40) has a second flange portion (42) corresponding to the first flange portion (53), and the second flange portion (42) is provided with a plurality of fourth mounting holes (421); The hydraulic oil tank refueling structure further includes a second fastener (62), which is installed in the third mounting hole (531) and the fourth mounting hole (421), and the second fastener (62) is suitable for fixedly connecting the first flange portion (53) and the second flange portion (42).

10. The hydraulic oil tank refueling structure according to claim 9, characterized in that: A third sealing member (83) is provided between the first flange portion (53) and the second flange portion (42), and the third sealing member (83) is suitable for sealingly connecting the mounting seat (50) and the cover body (40).

Images