Hinge structure and openable door

Abstract

The novel hinge comprises a stepped shaft and a sleeve rotationally sleeved on the stepped shaft, the stepped shaft comprises a first shaft section and a second shaft section which are connected, the diameter of the first shaft section is smaller than that of the second shaft section, a mounting boss is arranged at the tail end of the first shaft section, and a mounting groove is formed in the tail end of the second shaft section. The first bearing assembly comprises a deep groove ball bearing, the deep groove ball bearing is installed in a space formed by the periphery of the installation boss and the inner wall of the sleeve, the second bearing assembly comprises a plane bearing, the plane bearing is installed in the installation groove, a lubricating oil channel is formed in the stepped shaft, and the tail end of the lubricating oil channel extends to the installation boss and the installation groove. According to the utility model, through the matching of the deep groove ball bearing and the plane bearing, the friction and the abrasion during the operation of the hinge are reduced, the service life and the safety of the hinge are improved, in addition, the lubricating oil channel can convey oil to a lubricating part, the friction and the abrasion of the hinge are further reduced, and the service life, the safety and the reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shot blasting machines, in particular to a hinge structure and an openable and closable door. Background Art

[0002] The original blanks of many mechanical components are forged or cast, and the rough surface of these components cannot meet the quality requirements of the product. For example, the crankshaft of a vehicle engine needs to be shot blasted on its surface, which is usually done with shot blasting equipment.

[0003] The crankshaft parts are transferred to the shot blasting machine through the chain transmission mechanism for shot blasting. When the crankshaft parts enter the shot blasting machine, the shot blasting machine needs to open and close the door. The hinge used on the door of the shot blasting machine is composed of a step shaft and a sleeve, one side is welded to the door frame, and the other side is welded to the door. Every time the shot blasting machine works, it needs to open and close the door. The hinge on the door wears quickly, and a gap appears over time. The steel shot in the shot blasting machine is easy to collide with the outside of the machine, causing equipment damage and personnel safety.

[0004] Therefore, we propose a hinge structure and an openable and closable door. Utility Model Content

[0005] The purpose of the utility model is to provide a hinge structure and an openable and closable door to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a hinge structure, comprising:

[0008] A stepped shaft, the stepped shaft comprising a first shaft section and a second shaft section connected to each other, the diameter of the first shaft section is smaller than the diameter of the second shaft section, a mounting boss is provided at the end of the first shaft section, and a mounting groove is provided at the end of the second shaft section;

[0009] A sleeve, the sleeve being rotatably sleeved on the outside of the first shaft segment;

[0010] a first bearing assembly, the first bearing assembly comprising a deep groove ball bearing, the deep groove ball bearing being mounted in a space formed by an outer periphery of the mounting boss and an inner wall of the sleeve;

[0011] a second bearing assembly, the second bearing assembly comprising a plane bearing, the plane bearing being mounted in the mounting groove;

[0012] A lubricating oil passage is arranged inside the stepped shaft, and a terminal end of the lubricating oil passage at least extends to the mounting boss and the mounting groove.

[0013] Furthermore, the sleeve is a barrel-shaped structure with an open bottom, an inner groove matching the first shaft segment is provided inside the sleeve, a disassembly pad is provided between the top of the inner groove and the mounting boss, and a through hole connected to the lubricating oil channel is provided on the disassembly pad.

[0014] Furthermore, a lubricating oil port is opened at the top of the sleeve opposite to the through hole, a lubricating oil bead is installed at the lubricating oil port, a spring is installed at the bottom of the lubricating oil bead, and one end of the spring away from the lubricating oil bead is connected to the edge of the lubricating oil port.

[0015] Furthermore, a lubricating oil port is provided at the top end of the sleeve opposite to the through hole, and a reducing joint is installed at the lubricating oil port.

[0016] Furthermore, a docking boss is provided at the end of the second shaft section, a groove matching the docking boss is provided inside the sleeve, a sealing groove is provided in the groove, a sealing ring is installed in the sealing groove, and the sealing ring is located on the circumferential outer side of the plane bearing.

[0017] Furthermore, the groove is vertically spaced apart with two or more sealing grooves, and sealing rings are installed in at least two of the sealing grooves.

[0018] Furthermore, the installation groove is arranged in the docking boss, and the top of the installation groove is open, and the distance between the outer edge of the docking boss and the outer edge of the second shaft segment matches the thickness of the groove.

[0019] Further, the lubricating oil passage comprises a transverse oil passage and a vertical oil passage, the upper end of the vertical oil passage extends to the top end of the first shaft section, the lower end of the vertical oil passage extends to the bottom end of the second shaft section, and a sealing plug is installed at the lower end of the vertical oil passage;

[0020] Both ends of the transverse oil passage are communicated with the mounting groove.

[0021] In a second aspect, the utility model provides an openable and closable door, comprising a door frame and a door body, and also comprising a hinge structure as described in the first aspect, wherein the door frame is connected to a stepped shaft of the hinge structure, and the door body is connected to a sleeve of the hinge structure.

[0022] Compared with the prior art, the utility model has the following technical effects:

[0023] In the utility model, deep groove ball bearings and plane bearings are arranged in the stepped shaft and the sleeve. The deep groove ball bearings bear the load of the sleeve and the stepped shaft rotation, and the plane bearings support the sleeve. Through the cooperation of the deep groove ball bearings and the plane bearings, the friction and wear of the hinge during operation are reduced, and the service life and safety of the hinge are improved. In addition, the lubricating oil channel opened inside the stepped shaft can transport oil to the lubricating part, ensuring that the operating part of the hinge is fully lubricated, reducing the friction and wear of the hinge, and improving the service life, safety and reliability of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the hinge of the first embodiment of the utility model;

[0025] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0027] Figure 4 It is a top view schematic diagram of the hinge of the first embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the sleeve of the first embodiment of the utility model;

[0029] Figure 6 It is a schematic structural diagram of a stepped shaft according to an embodiment of the utility model.

[0030] Figure 7 The figure is a schematic diagram of the overall structure of the hinge of the second embodiment of the present utility model.

[0031] Explanation of the accompanying drawings: 1. door frame, 2. door body, 3. sleeve, 31. inner groove, 32. sealing groove, 33. lubricating oil port, 4. stepped shaft, 41. first shaft section, 42. second shaft section, 43. mounting groove, 44. mounting boss, 45. lubricating oil channel, 451. vertical oil channel, 452. transverse oil channel, 46. docking boss, 5. lubricating oil bead, 6. sealing plug, 7. first bearing assembly, 71. disassembly pad, 72. deep groove ball bearing, 8. second bearing assembly, 81. sealing ring, 82. plane bearing, 9. reducer, 10. spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1

[0034] As an example, see Figures 1 to 6 The present embodiment provides a hinge structure, including a stepped shaft 4 and a sleeve 3 rotatably sleeved on the stepped shaft 4. The stepped shaft 4 includes a first shaft section 41 and a second shaft section 42 connected to each other. The diameter of the first shaft section 41 is smaller than the diameter of the second shaft section 42. A mounting boss 44 is provided at the end of the first shaft section 41, and a mounting groove 43 is provided at the end of the second shaft section 42. The first bearing assembly 7 includes a deep groove ball bearing 72, which is installed in a space formed by the outer periphery of the mounting boss 44 and the inner wall of the sleeve 3. The second bearing assembly 8 includes a plane bearing 82, which is installed in the mounting groove 43. A lubricating oil passage 45 is provided inside the stepped shaft 4, and the end of the lubricating oil passage 45 extends to the mounting boss 44 and the mounting groove 43. A deep groove ball bearing 72 and a plane bearing 82 are arranged in the stepped shaft 4 and the sleeve 3. The deep groove ball bearing 72 bears the load of the sleeve 3 and the stepped shaft 4 when they rotate, and the plane bearing 82 supports the sleeve 3. The cooperation of the deep groove ball bearing 72 and the plane bearing 82 reduces the friction and wear during the operation of the hinge, and improves the service life and safety of the hinge. The lubricating oil channel 45 opened inside the stepped shaft 4 can transport oil to the lubricating part, ensure that the operating part of the hinge is fully lubricated, reduce the friction and wear of the hinge, and improve the service life, safety and reliability of the hinge.

[0035] Specifically, the sleeve 3 is a barrel-shaped structure with an open bottom, and an inner groove 31 is provided inside the sleeve 3 to match the first shaft section 41. A disassembly pad 71 is installed between the top of the inner groove 31 and the mounting boss 44, and the disassembly pad 71 plays a certain buffering and protective role for the deep groove ball bearing 72. A through hole is provided on the disassembly pad 71 to communicate with the lubricating oil passage 45, so that the lubricating oil can enter the lubricating oil passage 45 conveniently.

[0036] Specifically, a lubricating oil port 33 is provided at the top of the sleeve 2 opposite to the through hole, and a lubricating oil bead 5 is installed at the lubricating oil port 33. The lubricating oil bead 5 can prevent dust from entering the hinge. In addition, when the hinge needs to add lubricating oil, the staff uses a manual oil gun to connect with the lubricating oil bead 5, and then lubricates the hinge with lubricating oil. A spring 10 is installed at the bottom of the lubricating oil bead 5. The end of the spring 10 away from the lubricating oil bead 5 is connected to the edge of the bottom of the lubricating oil port 33. The spring 10 supports the lubricating oil bead 5 to prevent the lubricating oil bead 5 from falling, which can prevent dust from entering the hinge and causing the bearing service life to decrease.

[0037] Specifically, a docking boss 46 is provided at the end of the second shaft section 42 of the stepped shaft 4, a groove matching the docking boss 46 is provided inside the sleeve 3, a sealing groove 32 is provided in the groove, a sealing ring 81 is installed in the sealing groove 32, and the sealing ring 81 is located on the circumferential outer side of the plane bearing 82. The sealing ring 11 can prevent the leakage of lubricating oil in the hinge and the entry of dust.

[0038] Specifically, the mounting groove 43 is disposed in the docking boss 46 , and the top of the mounting groove 43 is open. The distance between the outer edge of the docking boss 46 and the outer edge of the second shaft section 42 matches the thickness of the groove, which facilitates the docking between the sleeve 3 and the stepped shaft 4 .

[0039] Specifically, the lubricating oil passage 45 opened inside the stepped shaft 4 includes a transverse oil passage 452 and a vertical oil passage 451. The upper end of the vertical oil passage 451 extends to the top of the first shaft section 41. The entrance of the vertical oil passage 451 coincides with the through hole on the disassembly pad 71 and the lubricating oil port 33 on the sleeve 3, so that the added lubricating oil can enter the lubricating oil passage 45. The lower end of the vertical oil passage 451 extends to the bottom end of the second shaft section 42. The sealing plug 6 blocks the outlet of the vertical oil passage 451 to prevent the lubricating oil from flowing out of the hinge. Both ends of the transverse oil passage 452 are connected to the mounting groove 43, so that the lubricating oil in the vertical oil passage 451 can enter the mounting groove 43. The lubricating oil passage 45 can transport the lubricating oil to the lubricating part, thereby ensuring that the operating part of the hinge is fully lubricated, reducing the friction and wear of the hinge, and improving the service life, safety and reliability of the hinge.

[0040] The working principle of the utility model is as follows: the stepped shaft 4 is installed on the door frame 1, the sleeve 3 is connected to the door body 2, and force is applied to make the sleeve 3 and the stepped shaft 4 rotate relative to each other. The deep groove ball bearing 72 and the plane bearing 82 in the hinge reduce the friction between the sleeve 3 and the stepped shaft 4. At the same time, the lubricating oil in the lubricating oil channel 45 lubricates the hinge operation part, further reducing the friction between the sleeve 3 and the stepped shaft 4. When the hinge needs to be added with lubricating oil after being used for a period of time, the manual oiling gun is connected with the lubricating oil bead 5 to add lubricating oil to the hinge.

[0041] Embodiment 2

[0042] The parts of this embodiment that overlap with the first embodiment are not repeated here.

[0043] Combination Figure 7 , while its characteristics remain unchanged, lubricating oil needs to be added once a week through the lubricating oil bead 5 on the sleeve 3. If the refueling frequency is too frequent, the lubricating oil bead 5 can be removed, and a reducer 9 can be installed at the lubricating oil port 33. The reducer 9 can be connected to the automatic refueling cup, and lubricating oil can be added through the hinge of the automatic refueling cup. It is only necessary to adjust the refueling time and replace the automatic refueling cup regularly.

[0044] Embodiment 3

[0045] The parts of this embodiment that overlap with the first embodiment are not repeated here.

[0046] With the features unchanged, two sealing grooves 32 are spaced apart in the vertical direction of the groove, and sealing rings 81 are installed in the two sealing grooves 32, which further improves the sealing performance of the hinge and makes it more difficult for lubricating oil to leak and dust to enter.

[0047] Embodiment 4

[0048] This embodiment provides an openable and closable door, comprising a door frame 1 and a door body 2, and also comprising the hinge structure described in any one of the first, second and third embodiments, wherein the door frame 1 is connected to the stepped shaft 4 of the hinge structure, and the door body 2 is connected to the sleeve 3 of the hinge structure. The sleeve 3 and the stepped shaft 4 are relatively rotated by applying force, and the deep groove ball bearing 72 and the plane bearing 82 in the hinge reduce the friction between the sleeve 3 and the stepped shaft 4. At the same time, the lubricating oil in the lubricating oil passage 45 lubricates the hinge operation part, further reducing the friction between the sleeve 3 and the stepped shaft 4.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hinge structure, characterized in that: include: A stepped shaft (4), the stepped shaft (4) comprising a first shaft section (41) and a second shaft section (42) connected to each other, the diameter of the first shaft section (41) being smaller than the diameter of the second shaft section (42), a mounting boss (44) being provided at the end of the first shaft section (41), and a mounting groove (43) being provided at the end of the second shaft section (42); A sleeve (3), the sleeve (3) being rotatably sleeved on the outside of the first shaft section (41); A first bearing assembly (7), the first bearing assembly (7) comprising a deep groove ball bearing (72), the deep groove ball bearing (72) being mounted in a space formed by an outer periphery of the mounting boss (44) and an inner wall of the sleeve (3); A second bearing assembly (8), the second bearing assembly (8) comprising a plane bearing (82), the plane bearing (82) being mounted in the mounting groove (43); A lubricating oil passage (45), wherein the lubricating oil passage (45) is arranged inside the stepped shaft (4), and the end of the lubricating oil passage (45) at least extends to the mounting boss (44) and the mounting groove (43).

2. A hinge structure according to claim 1, characterized in that: The sleeve (3) is a barrel-shaped structure with an open bottom. An inner groove (31) matching with the first shaft section (41) is provided inside the sleeve (3). A disassembly pad (71) is provided between the top of the inner groove (31) and the mounting boss (44). The disassembly pad (71) is provided with a through hole connected with the lubricating oil channel (45).

3. A hinge structure according to claim 2, characterized in that: A lubricating oil port (33) is provided at the top of the sleeve (3) opposite to the through hole, a lubricating oil bead (5) is installed at the lubricating oil port (33), a spring (10) is installed at the bottom of the lubricating oil bead (5), and one end of the spring (10) away from the lubricating oil bead (5) is connected to the edge of the lubricating oil port (33).

4. A hinge structure according to claim 2, characterized in that: A lubricating oil port (33) is provided at the top end of the sleeve (3) opposite to the through hole, and a reducing joint (9) is installed at the lubricating oil port (33).

5. A hinge structure according to any one of claims 2 to 4, characterized in that: A docking boss (46) is provided at the end of the second shaft section (42), a groove matching the docking boss (46) is provided inside the sleeve (3), a sealing groove (32) is provided in the groove, a sealing ring (81) is installed in the sealing groove (32), and the sealing ring (81) is located on the circumferential outer side of the plane bearing (82).

6. A hinge structure according to claim 5, characterized in that: The groove is vertically spaced apart from one another and provided with more than two sealing grooves (32), and sealing rings (81) are installed in at least two of the sealing grooves (32).

7. A hinge structure according to claim 5, characterized in that: The installation groove (43) is arranged in the docking boss (46), and the top of the installation groove (43) is open. The distance between the outer edge of the docking boss (46) and the outer edge of the second shaft section (42) matches the thickness of the groove.

8. The hinge structure according to claim 1, characterized in that: The lubricating oil passage (45) comprises a transverse oil passage (452) and a vertical oil passage (451), the upper end of the vertical oil passage (451) extending to the top end of the first shaft section (41), the lower end of the vertical oil passage (451) extending to the bottom end of the second shaft section (42), and a sealing plug (6) is installed at the lower end of the vertical oil passage (451); Both ends of the transverse oil passage (452) are in communication with the mounting groove (43).

9. An openable and closable door, comprising a door frame (1) and a door body (2), characterized in that: It also comprises the hinge structure as described in any one of claims 1 to 8, wherein the door frame (1) is connected to the stepped shaft (4) of the hinge structure, and the door body (2) is connected to the sleeve (3) of the hinge structure.

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