Sealing structure of track aerial work platform thrust wheel

Abstract

The utility model discloses a track aerial work platform thrust wheel sealing structure which comprises a walking chassis, a shear fork frame is installed at the upper end of the walking chassis, a work platform is installed on the top of the shear fork frame, and a plurality of thrust wheel assemblies are installed in the middle of the walking chassis at equal intervals. The supporting wheel assembly comprises a supporting wheel shaft rotationally connected to the walking chassis, baffles are installed on the left side and the right side of the supporting wheel shaft, bearings are installed at the upper end and the lower end of the right side of the supporting wheel shaft, and check rings are installed on the left side and the right side of the upper end of each bearing. First sealing is conveniently formed on the outer surface of the bearing, the sealing effect of the bearing is ensured, the first gasket, the locking bolt and the first spring washer are installed on the thrust wheel shaft to form labyrinth sealing with the thrust wheel, second sealing is formed, muddy water is prevented from entering an inner cavity of the bearing from the outer side, and after the muddy water breaks through the labyrinth sealing, the muddy water can naturally flow out through the flow guide hole.

Description

Technical Field

[0001] The utility model relates to the technical field of track wheels, in particular to a sealing structure of a track wheel of a crawler aerial work platform. Background Art

[0002] Aerial work platforms are equipment used when working at height, providing a safe and stable working environment for construction, maintenance, cleaning, and other operations. They can usually be raised and lowered vertically and moved within a certain range, and are widely used in industries such as industry, construction, and logistics.

[0003] The aerial work platform has a self-propelled function. During the operation of the machine, it can pass through complex working conditions with mud and water. The supporting wheels have the function of bearing the weight of the entire machine and can rotate automatically when turning and walking. In the existing sealing structure, mud and water begin to penetrate the sealing layer and enter the bearing over time during use, affecting the normal operation of the bearing. Therefore, it is necessary to provide a new sealing structure for the supporting wheels of crawler aerial work platforms to solve the above technical problems. Utility Model Content

[0004] The object of the present invention is to provide a sealing structure for a track roller of a crawler aerial work platform to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a sealing structure for the track rollers of a crawler aerial work platform, comprising: a walking chassis, a scissor frame is installed on the upper end of the walking chassis, a working platform is installed on the top of the scissor frame, and a plurality of track roller assemblies are equidistantly installed in the middle of the walking chassis;

[0006] The supporting wheel assembly includes a supporting wheel shaft rotatably connected to the walking chassis, baffles are installed on the left and right sides of the supporting wheel shaft, bearings are installed on the upper and lower ends of the right side of the supporting wheel shaft, retaining rings are installed on the left and right sides of the upper end of the bearing, and supporting wheels are installed on the upper and lower ends of the side where the baffles are close to each other.

[0007] As a further description of the above technical solution: a first gasket is installed on the side of the two groups of baffles away from each other, a locking bolt is inserted in the middle of the first gasket, and a first spring washer is sleeved in the middle of the locking bolt.

[0008] As a further description of the above technical solution: the inner ring of the bearing is mounted on the track roller shaft, and the outer ring of the bearing is mounted on the track roller, and the track roller shaft and the track roller can rotate relative to each other.

[0009] As a further description of the above technical solution: the retaining ring blocks one side of the bearing, the supporting wheel shaft blocks the other side of the bearing, and the supporting wheel shaft and the supporting wheel have no axial movement.

[0010] As a further description of the above technical solution: a skeleton oil seal is installed at the connection between the baffle and the supporting wheel.

[0011] As a further description of the above technical solution: the first gasket is provided with a slot adapted to the locking bolt, the surface of the locking bolt is connected with a thread, the supporting wheel shaft is provided with a thread groove adapted to the thread, and the locking bolt and the supporting wheel shaft form a rotating connection mechanism.

[0012] As a further description of the above technical solution: a second gasket is installed on one side of the supporting wheel assemblies close to each other, a bolt is inserted in the middle of the second gasket, and a second spring washer is sleeved in the middle of the bolt.

[0013] As a further description of the above technical solution: the supporting wheel assembly and the walking chassis are provided with threaded holes adapted to the bolts.

[0014] The utility model provides a sealing structure for the track rollers of a crawler aerial work platform, which has the following beneficial effects:

[0015] 1. By providing a baffle, a skeleton oil seal and a supporting roller, it is convenient to form a first seal on the outer surface of the bearing to ensure the sealing effect of the bearing. The first gasket, the locking bolt and the first spring washer are installed on the supporting roller shaft to form a labyrinth seal with the supporting roller, forming a second seal to prevent muddy water from entering the bearing cavity from the outside. After the muddy water breaks through the labyrinth seal, the guide hole allows the muddy water to flow out naturally. Through the two sets of sealing layers, it can effectively prevent muddy water from penetrating the sealing layer into the bearing and affecting the normal operation of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a sealing structure for a tracked aerial work platform roller proposed in the present invention;

[0017] Figure 2 This is a schematic structural diagram of the support column assembly in the present invention;

[0018] Figure 3 This is a structural diagram of the installation of the support column assembly in the utility model.

[0019] Legend:

[0020] 1. Walking chassis; 2. Scissor frame; 3. Working platform; 4. Track roller assembly; 5. Track roller shaft; 6. Baffle; 7. Skeleton oil seal; 8. Retaining ring; 9. Bearing; 10. Track roller; 11. First gasket; 12. Locking bolt; 13. First spring washer; 14. Bolt; 15. Second spring washer; 16. Second gasket. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1, reference Figure 1 and Figure 2 The utility model discloses a sealing structure for the track rollers of a crawler aerial work platform, which can solve the problem of mud and water beginning to penetrate the sealing layer and enter the bearings over time during the use of the existing sealing structure, thereby affecting the normal operation of the bearings. The utility model comprises a walking chassis 1, a scissor frame 2 is installed on the upper end of the walking chassis 1, a working platform 3 is installed on the top of the scissor frame 2, a plurality of track roller assemblies 4 are installed at equal intervals in the middle of the walking chassis 1, the track roller assembly 4 includes a track roller shaft 5 rotatably connected to the walking chassis 1, baffles 6 are installed on the left and right sides of the track roller shaft 5, bearings 9 are installed on the upper and lower ends of the right side of the track roller shaft 5, retaining rings 8 are installed on the left and right sides of the upper end of the bearing 9, and track rollers 10 are installed on the upper and lower ends of the baffles 6 close to each other.

[0023] Working principle: walking chassis 1 is convenient for driving the device to move, scissor frame 2 is convenient for adjusting the working platform 3 for height adjustment, and supporting wheel assembly 4 is convenient for driving the walking chassis 1 to move. By providing baffle 6, skeleton oil seal 7 and supporting wheel 10, it is convenient to form a first seal on the outer surface of bearing 9 to ensure the sealing effect of bearing 9. Supporting wheel 10 has the function of bearing the weight of the whole machine and can rotate by itself during steering and walking. The first gasket 11, locking bolt 12 and first spring washer 13 are installed on the supporting wheel shaft 5 to form a labyrinth seal with supporting wheel 10, forming a second seal to prevent muddy water from entering the inner cavity of bearing 9 from the outside. After the muddy water breaks through the labyrinth seal, the guide hole can allow the muddy water to flow out naturally.

[0024] Example 2, refer to Figure 2 and Figure 3In this embodiment, the problem that muddy water begins to penetrate the sealing layer and enter the bearing over time during the use of the existing sealing structure is solved, which affects the normal operation of the bearing. The sealing structure of the track roller of the crawler aerial work platform also includes: a first gasket 11 is installed on the side away from each other of the two sets of baffles 6, a locking bolt 12 is inserted in the middle of the first gasket 11, and a first spring washer 13 is sleeved in the middle of the locking bolt 12. The inner ring of the bearing 9 is installed on the supporting wheel shaft 5, and the outer ring of the bearing 9 is installed on the supporting wheel 10. The supporting wheel shaft 5 and the supporting wheel 10 can rotate relative to each other, the retaining ring 8 blocks one side of the bearing 9, and the supporting wheel shaft 5 blocks the shaft On the other side of the bearing 9, the supporting wheel shaft 5 and the supporting wheel 10 have no axial movement, and a skeleton oil seal 7 is installed at the connection between the baffle 6 and the supporting wheel 10. The first gasket 11 is provided with a slot adapted to the locking bolt 12, and the surface of the locking bolt 12 is connected with a thread. The supporting wheel shaft 5 is provided with a thread groove adapted to the thread. The locking bolt 12 and the supporting wheel shaft 5 form a rotating connection mechanism. The supporting wheel assemblies 4 are close to each other. A second gasket 16 is installed on the side, and a bolt 14 is inserted in the middle of the second gasket 16. A second spring washer 15 is sleeved in the middle of the bolt 14. The supporting wheel assembly 4 and the walking chassis 1 are provided with threaded holes adapted to the bolt 14.

[0025] Working principle: When in use, the bolts 14, the second spring washer 15, and the second gasket 16 are used to facilitate the installation of the supporting wheel assembly 4 on the walking chassis 1. After installation, the baffle 6 is installed on the supporting wheel shaft 5 through the first gasket 11, the locking bolt 12, and the first spring washer 13 to form a labyrinth seal with the supporting wheel 10, forming a second seal to prevent mud and water from entering the inner cavity of the bearing 9 from the outside. After the mud and water break through the labyrinth seal, the guide hole can allow the mud and water to flow out naturally. After the baffle 6 is installed, it is installed on both sides of the connection between the supporting wheel 10 and the baffle 6 through the skeleton oil seal 7 to form the first seal. The present invention provides a sealing structure for the supporting wheel of a crawler aerial work platform, which aims to solve the existing problem of preventing mud and water from breaking through the sealing structure and entering the inner cavity of the bearing 9, and to avoid mud and water from penetrating the sealing layer into the bearing 9 over time during use, affecting the normal operation of the bearing 9.

[0026] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing structure for a track roller of a crawler aerial work platform, characterized in that: include: A walking chassis (1), wherein a scissor frame (2) is installed at the upper end of the walking chassis (1), a working platform (3) is installed on the top of the scissor frame (2), and a plurality of supporting wheel assemblies (4) are installed at equal intervals in the middle of the walking chassis (1); The supporting wheel assembly (4) includes a supporting wheel shaft (5) rotatably connected to the walking chassis (1), baffles (6) are installed on the left and right sides of the supporting wheel shaft (5), bearings (9) are installed on the upper and lower ends of the right side of the supporting wheel shaft (5), retaining rings (8) are installed on the left and right sides of the upper end of the bearing (9), and supporting wheels (10) are installed on the upper and lower ends of the baffle (6) on the side close to each other.

2. The sealing structure of the track roller of the crawler aerial work platform according to claim 1, characterized in that: A first gasket (11) is installed on the side of the two groups of baffles (6) that are away from each other, a locking bolt (12) is inserted in the middle of the first gasket (11), and a first spring washer (13) is sleeved in the middle of the locking bolt (12).

3. The sealing structure of the track roller of the crawler aerial work platform according to claim 1, characterized in that: The inner ring of the bearing (9) is mounted on the track roller shaft (5), and the outer ring of the bearing (9) is mounted on the track roller (10), and the track roller shaft (5) and the track roller (10) can rotate relative to each other.

4. The sealing structure of the track roller of the crawler aerial work platform according to claim 1, characterized in that: The retaining ring (8) blocks one side of the bearing (9), and the supporting wheel shaft (5) blocks the other side of the bearing (9), and the supporting wheel shaft (5) and the supporting wheel (10) have no axial movement.

5. The sealing structure of the track roller of the crawler aerial work platform according to claim 1, characterized in that: A skeleton oil seal (7) is installed at the connection between the baffle (6) and the track wheel (10).

6. The sealing structure of the track roller of the crawler aerial work platform according to claim 2, characterized in that: The first gasket (11) is provided with a slot adapted to the locking bolt (12), a thread is connected to the surface of the locking bolt (12), the supporting wheel shaft (5) is provided with a thread groove adapted to the thread, and the locking bolt (12) and the supporting wheel shaft (5) form a rotation connection mechanism.

7. The sealing structure of the track roller of the crawler aerial work platform according to claim 1, characterized in that: A second gasket (16) is installed on one side of the supporting wheel assemblies (4) close to each other, a bolt (14) is inserted in the middle of the second gasket (16), and a second spring washer (15) is sleeved in the middle of the bolt (14).

8. The sealing structure of the track roller of the crawler aerial work platform according to claim 7, characterized in that: The track wheel assembly (4) and the traveling chassis (1) are provided with threaded holes adapted to the bolts (14).

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