Excavator cab supporting device

Abstract

The invention relates to the technical field of cab protection, in particular to an excavator cab supporting device which comprises a front supporting protection part and a driving part, and the front supporting protection part comprises a plurality of first supporting rods arranged in the radial direction, a plurality of second supporting rods arranged in the weft direction, an upper fixing sleeve, a lower fixing sleeve and an adjusting unit. The adjusting unit comprises an adjusting frame penetrating through a front windshield of the cab, a sliding groove is formed in the adjusting frame, a plurality of second counter bores are formed in the sliding groove side by side and provided with internal threads, the number of the second counter bores is larger than or equal to the sum of the number of the first supporting rods and the number of the first supporting rods by 2, and threaded holes are formed in the middles of the first supporting rods. The first supporting rod is in threaded connection with the second counter bore and the threaded hole through the threaded rod and is fixed to the adjusting frame. A driver can adjust the position of the first supporting rod in the cab, so that the influence of the first supporting rod on the visual field is avoided, and meanwhile, the protection of other supporting rods on the front side of the cab is not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of cab protection, and particularly to a support device for an excavator cab. Background Art

[0002] When traditional excavator construction machinery operates in harsh environments, the cab may be hit by objects, so there are certain safety hazards. To reduce the safety hazards, more and more cabs are equipped with protective nets to ensure the personal safety of the driver.

[0003] The patent with the application number 201410786878.2 discloses a sliding protective net for a hydraulic excavator cab, which includes a top protective net arranged on the top of the cab and a front protective net arranged in front of the cab. A bracket for supporting the front protective net is arranged at the lower end in front of the cab, and a roller assembly is arranged at the top of the front protective net. The front protective net can freely slide on the sliding grooves on both sides of the top protective net through the roller assembly. In the present invention, the front protective net can freely slide on the sliding grooves on both sides of the top protective net through the roller assembly. Therefore, the driver can choose to open or close the front protective net according to the specific operating conditions and different visibility requirements in front of the cab.

[0004] The inventor found that there are some deficiencies in the above patent. Although the driver can choose to open or close the front protective net according to the specific operating conditions and different visibility requirements in front of the cab, but when the front protective net is fully opened for good vision, the protection of the front side of the cab is lost. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a support device for an excavator cab to solve the problem that in the current solution, the front protective net needs to be fully opened to improve the vision, resulting in the loss of protection of the front side of the cab.

[0006] Based on the above purpose, the present invention provides a support device for an excavator cab, which is applied to the cab and includes: a front support protection part and a driving part, wherein: The front support and protection part includes multiple first support rods arranged radially, multiple second support rods arranged latitudinally, an upper fixing sleeve, a lower fixing sleeve and an adjusting unit. A plurality of rows of threaded holes are provided on the front side of the cab frame. A plurality of the second support rods are respectively connected to one row of the threaded holes by bolts in a threaded manner. The second support rod has a through groove, and the first support rod passes through the through grooves of the plurality of second support rods. Both the upper fixing sleeve and the lower fixing sleeve are provided with first counterbores adapted to one end of the first support rod. The lower fixing sleeve is fixedly arranged at the lower end of the cab frame. The adjusting unit includes an adjusting frame passing through the front windshield of the cab. The adjusting frame has a sliding groove, and a plurality of second counterbores are arranged side by side at the sliding groove. The second counterbore has an internal thread, and the number of the second counterbores is greater than or equal to the number of the first support rods + the number of the first support rods / 2. The middle part of the first support rod has a threaded hole, and the first support rod is fixedly arranged on the adjusting frame by a threaded rod threadedly connected to the second counterbore and the threaded hole; The upper fixing sleeve is in transmission connection with the driving part. When there is a first support rod blocking the view during operation, the driving part drives the upper fixing sleeve away from the top of the first support rod. At this time, the corresponding threaded rod is loosened, and the corresponding first support rod can be moved and fixed to the adjacent second counterbore.

[0007] Optionally, the support device further includes a top support and protection part, and the top support and protection part is used to be arranged on the top of the cab.

[0008] Optionally, the top protection part includes a first frame, and a first protection net is arranged inside the first frame.

[0009] Optionally, the support device further includes a cleaning part, and the cleaning part can move between the top and the front side of the cab.

[0010] Optionally, the cleaning part includes a second frame and a first electric cylinder. A roller assembly is arranged at the bottom of the second frame. Both the first frame and the front side of the cab frame are provided with chute tracks adapted to the rollers in the roller assembly. The chute track on the first frame is inclined. At least two groups of connecting plates are arranged on the second frame, and brushes are arranged on the connecting plates. A second protection net is arranged on the second frame. The telescopic rod of the first electric cylinder is provided with a limiting taper rod. A travel sensor is arranged in the chute track of the first frame. When the travel sensor detects the roller assembly, the first electric cylinder extends to drive the limiting taper rod to pass through the second protection net to limit the second frame. The first electric cylinder is electrically connected to a switch. When the switch is pressed, the first electric cylinder shortens to drive the limiting taper rod to leave the second protection net.

[0011] Optionally, a reinforcement assembly is further arranged on the second frame, and the reinforcement assembly improves the stability of the first support rod.

[0012] Optionally, the reinforcement component includes a baffle arranged on the front side of the cab, a first bracket and a second bracket fixed on the second frame. A plurality of first springs are arranged on one side of the second bracket. One end of each first spring is provided with a reinforcement plate. A T-shaped member is arranged on one side of the reinforcement plate. The T-shaped member slidably passes through the first bracket. A connecting member is arranged on the T-shaped member. A second spring is arranged between the connecting member and the first bracket. In the initial position, the T-shaped member blocks the reinforcement plate. When the second frame drops, the T-shaped member impacts the baffle, causing the T-shaped member to move upward. The upper end of the T-shaped member leaves the reinforcement member, and the reinforcement member extends outward between the two first support rods under the action of the first spring.

[0013] Optionally, the driving part includes a second electric cylinder for being arranged on the cab frame, and the telescopic rod of the second electric cylinder is arranged on the upper fixed sleeve.

[0014] When this support device is in use, the second support rod can be connected to one row of threaded holes by bolts. Specifically, which row of threaded holes can be set according to specific needs. For example, the driver can first sit on the driver's seat and observe to select a position that does not affect the line of sight to determine the specific installation position of the second support rod. The first support rod is fixed through the upper fixed sleeve, the lower fixed sleeve and the adjusting frame. When working, due to some angular reasons, some of the first support rods block the line of sight. At this time, the driving part can be used to drive the upper fixed sleeve away from the top of the first support rod, and then loosen the corresponding threaded rod. At this time, the driver can put his hand through the sliding groove in the cab, so as to move the corresponding first support rod to be fixed at the adjacent second counterbore, thus avoiding the influence of this first support rod on the line of sight, and at the same time other...

[0015] As can be seen from the above, this device can support and protect the cab through the first support rod and the second support rod. When the first support rod blocks the line of sight in some specific angular situations, the driver can adjust the position of the first support rod in the cab, thus avoiding the influence of this first support rod on the line of sight, and at the same time not affecting the protection of the front side of the cab by other support rods. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is the front view of the cab in the embodiment of the present invention; Figure 2 For Figure 1Right view of the first support rod in [the figure]; Figure 3 is Figure 2 Enlarged view of part A in [the figure]; Figure 4 Front view of the cleaning part of the embodiment of the present invention; Figure 5 Side view of the cleaning part of the embodiment of the present invention; Figure 6 is Figure 4 Enlarged view of part B in [the figure]; Figure 7 Side sectional view of the second bracket of the embodiment of the present invention.

[0018] The reference numerals in the figure are: 1. Cab; 2. First support rod; 3. Second support rod; 4. Upper fixing sleeve; 5. Lower fixing sleeve; 6. Adjusting frame; 7. Sliding groove; 8. Second counterbore; 9. Threaded rod; 10. First frame; 11. Second frame; 12. Roller assembly; 13. Connecting plate; 14. Brush; 15. Second protective net; 16. Limiting taper rod; 17. Baffle; 18. First bracket; 19. Second bracket; 20. First spring; 21. Reinforcing plate; 22. T-shaped part; 23. Connecting piece; 24. Second spring. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0021] As Figures 1 - 3 shown, an excavator cab support device is applied to a cab and includes: a front support and protection part and a driving part, wherein: The front support and protection part includes multiple first support rods 2 arranged radially, multiple second support rods 3 arranged latitudinally, an upper fixing sleeve 4, a lower fixing sleeve 5 and an adjusting unit. There are multiple rows of threaded holes on the front side of the frame of the cab 1. Multiple second support rods 3 are respectively connected to one row of threaded holes by bolts in a threaded manner. The second support rod 3 has a through groove, and the first support rod 2 passes through the through grooves of multiple second support rods 3. Both the upper fixing sleeve 4 and the lower fixing sleeve 5 are provided with first counterbores that cooperate with one end of the first support rod 2. The first counterbore of the lower fixing sleeve 5 can be designed to be shallower. The lower fixing sleeve 5 is fixedly arranged at the lower end of the frame of the cab 1. The adjusting unit includes an adjusting frame 6 that passes through the front windshield of the cab 1. The adjusting frame 6 has a sliding groove 7. Multiple second counterbores 8 are arranged side by side at the sliding groove 7. The second counterbores 8 have internal threads. The number of the second counterbores 8 is greater than or equal to the number of the first support rods 2 + the number of the first support rods 2 / 2. In this way, the uniform distribution of the second counterbores 8 can ensure that there is an idle second counterbore 8 beside each first support rod 2. The middle part of the first support rod 2 has a threaded hole. The first support rod 2 is fixedly connected to the adjusting frame 6 through a threaded rod 9 and the second counterbore 8 and the threaded hole. A handle can be arranged on the threaded rod 9, so as to facilitate the rotation of the threaded rod 9; The upper fixing sleeve 4 is in transmission connection with the driving part. When there is a first support rod 2 blocking the view during operation, the driving part drives the upper fixing sleeve 4 away from the top of the first support rod 2. At this time, the corresponding threaded rod 9 is loosened, and the corresponding first support rod 2 can be moved and fixed to the adjacent second counterbore 8.

[0022] When this support device is in use, the second support rod 3 can be connected to one row of threaded holes by bolts in a threaded manner. Which row of threaded holes can be set according to specific needs. For example, the driver can first sit on the driver's seat and observe to select a position that does not affect the line of sight to determine the specific installation position of the second support rod 3. The first support rod 2 is fixed through the upper fixing sleeve 4, the lower fixing sleeve 5 and the adjusting frame 6. When working, due to some angular reasons, some of the first support rods 2 block the view. At this time, the driving part can be used to drive the upper fixing sleeve 4 away from the top of the first support rod 2, and then the corresponding threaded rod 9 is loosened. At this time, the driver can put his hand through the sliding groove 7 in the cab 1, so as to move the corresponding first support rod 2 and fix it to the adjacent second counterbore 8, so as to avoid the influence of this first support rod 2 on the view, and at the same time the others.

[0023] As described above, the present device can support and protect the cab 1 through the first support rod 2 and the second support rod 3. When the first support rod 2 blocks the view in certain angular situations, the driver can adjust the position of the first support rod 2 in the cab 1, thus avoiding the influence of the first support rod 2 on the view, while not affecting the protection of the front side of the cab 1 by other support rods.

[0024] As Figure 4 shown, in some embodiments, the support device further includes a top support protection part, and the top support protection part is used to be arranged on the top of the cab 1. Optionally, the top protection part includes a first frame 10, and a first protection net is arranged inside the first frame 10. The top of the cab 1 can be protected through the top protection part, further improving the protection effect on the cab 1.

[0025] In some embodiments, the support device further includes a cleaning part, and the cleaning part can move between the top and the front side of the cab 1. After working for a period of time, there may be dirt on the front support protection part, which affects the line of sight and needs to be cleaned. To solve the cleaning problem, the present invention also designs a cleaning part.

[0026] As Figures 4 - 6 shown, optionally, the cleaning part includes a second frame 11 and a first electric cylinder. A roller assembly 12 is arranged at the bottom of the second frame 11. Chute tracks for cooperating with the rollers in the roller assembly 12 are arranged on both the first frame 10 and the front side of the cab 1 frame. The chute track on the first frame 10 is inclined. At least two groups of connecting plates 13 are arranged on the second frame 11, and brushes 14 are arranged on the connecting plates 13. A second protection net 15 is arranged on the second frame 11. A limiting cone rod 16 is arranged on the telescopic rod of the first electric cylinder. A travel sensor is arranged in the chute track of the first frame 10. When the travel sensor detects the roller assembly 12, the first electric cylinder extends to drive the limiting cone rod 16 to pass through the second protection net 15 to limit the second frame 11. The first electric cylinder is electrically connected to a switch. When the switch is pressed, the first electric cylinder shortens to drive the limiting cone rod 16 to leave the second protection net 15.

[0027] Initially, the cleaning part is located at the top of the cab 1. At this time, the first electric cylinder is in the extended state, and the cleaning part is fixed by the limit cone rod 16 passing through the second protective net 15. When cleaning is required, the first electric cylinder is controlled to shorten. Since the chute track on the first frame 10 is inclined, the cleaning part will automatically slide down. During the downward sliding process, the first support rod 2 and the second support rod 3 are cleaned by the brush 14. It is also possible to manually pull the cleaning part up and down for repeated cleaning. After cleaning, the cleaning part is pushed back to the top of the cab 1. When the travel sensor detects the roller assembly 12, the first electric cylinder can be controlled by the controller to extend, driving the limit cone rod 16 to pass through the second protective net 15 to limit and fix the cleaning part again.

[0028] As can be seen from the above, this cleaning part can complete the rapid cleaning of the front support and protection part and can be located at the top of the cab 1 when not cleaning, further enhancing the protection of the top through the second protective net 15.

[0029] In some embodiments, a reinforcement component is further provided on the second frame 11, and the reinforcement component improves the stability of the first support rod 2.

[0030] As Figure 5 and Figure 7 shown, optionally, the reinforcement component includes a baffle 17 arranged on the front side of the cab 1, a first bracket 18 and a second bracket 19 fixed on the second frame 11. A plurality of first springs 20 are arranged on one side of the second bracket 19. One end of the first spring 20 is provided with a reinforcement plate 21. A T-shaped part 22 is arranged on one side of the reinforcement plate 21. The T-shaped part 22 slides through the first bracket 18. A connecting part 23 is arranged on the T-shaped part 22. A second spring 24 is arranged between the connecting part 23 and the first bracket 18. In the initial position, the T-shaped part 22 blocks the reinforcement plate 21. When the second frame 11 drops, the T-shaped part 22 impacts the baffle 17, causing the T-shaped part 22 to move upward. The upper end of the T-shaped part 22 leaves the reinforcement part, and the reinforcement part extends outward between the two first support rods 2 under the action of the first spring 20.

[0031] When the driver discovers a risk of impact on the front side of the cab 1 during work, in order to further enhance the protection effect on the front side at this time, the switch can be pressed. After pressing the switch, the first electric cylinder shortens to drive the limit cone rod 16 away from the second protective net 15. At this time, the cleaning part drops. When the second frame 11 drops, the T-shaped part 22 impacts the baffle 17, causing the T-shaped part 22 to move upward. The upper end of the T-shaped part 22 leaves the reinforcing part, and the reinforcing part extends outward between the two first support rods 2 under the action of the first spring 20, further enhancing the stability of the first support rod 2, thereby enhancing the support and protection effect of the first support rod 2. In this way, by enhancing the support and protection effect of the first support rod 2 and the cleaning part located on the front side of the cab 1, the protection effect on the front side of the cab 1 is enhanced.

[0032] Optionally, the driving part includes a second electric cylinder for being arranged on the frame of the cab 1, and the telescopic rod of the second electric cylinder is arranged on the upper fixed sleeve 4. The movement of the upper fixed sleeve 4 can be realized through the operation of the second electric cylinder.

[0033] In some embodiments, a windproof sleeve is sleeved on the adjusting frame 6. The windproof sleeve can prevent the wind from blowing into the cab 1 from the sliding groove 7. When the position of the first support frame needs to be adjusted, the windproof sleeve can be removed.

[0034] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as above, which are not provided in detail for the sake of brevity.

[0035] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An excavator cab support device, applied to a cab (1), characterized in that: include: Front support guard and drive part, wherein: The front support protection part comprises a plurality of radially arranged first support rods (2), a plurality of weft-arranged second support rods (3), an upper fixing sleeve (4), a lower fixing sleeve (5) and an adjustment unit; a plurality of rows of threaded holes are arranged on the front side of the cab (1) frame; a plurality of the second support rods (3) are respectively threadedly connected to one of the rows of threaded holes by bolts; the second support rod (3) has a through slot; the first support rod (2) passes through the through slots of the plurality of the second support rods (3); a first countersunk hole matching one end of the first support rod (2) is arranged in the upper fixing sleeve (4) and the lower fixing sleeve (5); the lower fixing sleeve (5) The adjusting unit is fixedly arranged at the lower end of the frame of the cab (1), the adjusting frame (6) passing through the front windshield of the cab (1), the adjusting frame (6) having a sliding groove (7), the sliding groove (7) being provided with a plurality of second countersunk holes (8) arranged side by side, the second countersunk holes (8) having internal threads, the number of the second countersunk holes (8) being greater than or equal to the number of the first support rods (2) + the number of the first support rods (2) / 2, the middle part of the first support rod (2) having a threaded hole, the first support rod (2) being threadedly connected with the second countersunk holes (8) and the threaded hole through a threaded rod (9) and fixed to the adjusting frame (6); The upper fixing sleeve (4) is in driving connection with the driving unit. When the first support rod (2) blocks the field of vision during operation, the driving unit drives the upper fixing sleeve (4) away from the top of the first support rod (2). At this time, the corresponding threaded rod (9) is loosened, and the corresponding first support rod (2) can be moved and fixed to the second countersunk hole (8) next to it.

2. The excavator cab support device according to claim 1, characterized in that: The supporting device further comprises a top supporting protection portion, and the top supporting protection portion is used to be arranged on the top of the cab (1).

3. The excavator cab support device according to claim 2, characterized in that: The top protection part comprises a first frame (10), and a first protection net is arranged inside the first frame (10).

4. The excavator cab support device according to claim 3, characterized in that: The supporting device also includes a cleaning portion which is movable between the top and the front side of the cab (1).

5. The excavator cab support device according to claim 4, characterized in that: The cleaning part comprises a second frame (11) and a first electric cylinder. A roller assembly (12) is provided at the bottom of the second frame (11). A slideway track cooperating with a roller in the roller assembly (12) is provided on the front side of the first frame (10) and the frame of the cab (1). The slideway track on the first frame (10) is tilted. At least two groups of connecting plates (13) are provided on the second frame (11). A brush (14) is provided on the connecting plate (13). A second protective net (15) is provided on the second frame (11). A telescopic rod of the first electric cylinder is provided with a limiting cone rod (16). A stroke sensor is provided in the slideway track of the first frame (10). When the stroke sensor detects the roller assembly (12), the first electric cylinder extends to drive the limiting cone rod (16) to pass through the second protective net (15) to limit the second frame (11). The first electric cylinder is electrically connected to a switch. When the switch is pressed, the first electric cylinder shortens to drive the limiting cone rod (16) to leave the second protective net (15).

6. The excavator cab support device according to claim 5, characterized in that: The second frame (11) is also provided with a reinforcement component, and the reinforcement component is used to enhance the stability of the first support rod (2).

7. The excavator cab support device according to claim 6, characterized in that: The reinforcement assembly comprises a baffle (17) arranged at the front side of the cab (1), a first bracket (18) and a second bracket (19) fixed on the second frame (11), a plurality of first springs (20) being arranged on one side of the second bracket (19), a reinforcement plate (21) being arranged at one end of the first spring (20), a T-shaped piece (22) being arranged on one side of the reinforcement plate (21), the T-shaped piece (22) slidingly passing through the first bracket (18), and a connecting piece (22) being arranged on the T-shaped piece (22) A connecting piece (23), a second spring (24) is provided between the connecting piece (23) and the first bracket (18); in the initial position, the T-shaped piece (22) blocks the reinforcing plate (21); when the second frame (11) falls, the T-shaped piece (22) collides with the baffle (17), so that the T-shaped piece (22) moves upward, and the upper end of the T-shaped piece (22) leaves the reinforcing piece, and the reinforcing piece extends outwardly between the two first support rods (2) under the action of the first spring (20).

8. The excavator cab support device according to claim 1, characterized in that: The driving unit comprises a second electric cylinder for being arranged on a frame of a cab (1), and a telescopic rod of the second electric cylinder is arranged on an upper fixing sleeve (4).

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