Seat swivel base

Abstract

The utility model discloses a seat rotating base, including felling car, the driver's cabin of felling car is equipped with seat, the seat is installed in the driver's cabin through the bottom plate, the lower extreme of seat is equipped with buffer unit, and the lower extreme of buffer unit is equipped with roof, be equipped with rotating assembly and locking assembly between the bottom plate and roof, be used for the fixation of seat rotation and after rotation, the utility model discloses a rotating assembly is set up, and rotating base adopts double bearing combination structure, so that the whole seat can realize free rotation, and is provided with two locking and releasing mode simultaneously, namely adopts electric control pneumatic brake with full sandwich locking, can make to one second release one second locking, convenient and fast, easy operation, and when there is no compressed air source, can pass through the foot control locking and releasing, improves the adaptability of different model felling car.

Description

Technical Field

[0001] This utility model relates to the field of forestry logging equipment technology, and in particular to a rotating seat base. Background Technology

[0002] In forestry logging operations, the logging vehicle is the core piece of equipment. Its body layout has a clear functional division: the front is the engine compartment, the driver's cab is located in the middle of the vehicle, and the rear is equipped with a telescopic boom. This layout needs to meet the dual requirements of driving and logging operations. However, the driver's cab seats of existing logging vehicles are mostly fixed structures or only have small-angle adjustment functions, which are difficult to adapt to the high-frequency turning needs of operators in actual operations.

[0003] On the one hand, operators need to frequently change their body orientation during operations. When driving a vehicle, they need to face the front of the vehicle to ensure safe driving. When operating the rear crane telescopic boom for felling and timber collection, they need to turn to the rear of the vehicle. Fixed or small-angle adjustable seats force operators to frequently twist their bodies, which can easily cause fatigue in the waist and neck. Long-term operation may also lead to occupational injuries. At the same time, the limited vision and operating posture will reduce work efficiency and operation accuracy.

[0004] On the other hand, the rotation angle of some seat bases with rotating functions is mostly limited to within 180°, which cannot cover the full working turning range of 0°~225° required by forestry logging vehicle operators from driving to operation; and the locking mechanism of existing rotating bases mostly adopts traditional structures such as bolt fastening and lever buckle, which makes the locking and releasing operation steps cumbersome and may delay the operation opportunity in emergency operation switching scenarios.

[0005] More importantly, forestry operations take place in extremely harsh environments. Logging areas are mostly mountainous terrain with rugged, bumpy roads and steep inclines, generating continuous vibrations and impact loads during vehicle movement and operations. Existing rotating bases generally suffer from insufficient structural strength; key components such as the rotating shaft and locking assembly are prone to wear or breakage due to frequent stress and vibration. They cannot withstand long-term, high-frequency rotational operations and harsh working conditions, requiring frequent repairs and replacements. This not only increases equipment maintenance costs but also risks safety accidents due to component failure.

[0006] To address this issue, a rotating seat base is proposed to solve the problems existing in the prior art. Utility Model Content

[0007] The purpose of this utility model is to address the aforementioned problems by providing a rotating seat base. This utility model, through the inclusion of a rotating component and a dual-bearing structure, allows the entire seat to rotate freely. It also features two locking and releasing methods: an electro-pneumatic brake with a clamp for locking, enabling one-second locking and one-release, which is convenient, quick, and easy to operate; and a foot pedal for locking and releasing when there is no compressed air source, improving compatibility with different logging vehicle models. To achieve the above-mentioned utility model objectives, the technical solution adopted is as follows: According to one aspect of the present invention, a seat rotation base is provided, including a logging vehicle, wherein a seat is provided in the cab of the logging vehicle, the seat is installed in the cab via a base plate, a buffer unit is provided at the lower end of the seat, and a top plate is provided at the lower end of the buffer unit, and a rotation component and a locking component are provided between the base plate and the top plate for rotating the seat and fixing the seat after rotation.

[0008] Preferably, the rotating assembly includes a bearing mounting base disposed on the base plate, wherein a tapered roller bearing is disposed within the bearing mounting base, and a central shaft is disposed at the lower end of the top plate, and the central shaft is coaxially arranged with the bearing mounting base. The central shaft is inserted into the bearing mounting base and engages with the tapered roller bearing. A through groove is formed at the center of the bottom of the base plate, and a fixing screw, a bearing pressure block, and a thrust ball bearing are disposed within the through groove. The fixing screw passes through the bearing pressure block and the thrust ball bearing and connects to the central shaft. A deep groove ball bearing is disposed at the upper end of the interior of the bearing mounting base, and the deep groove ball bearing engages with the central shaft.

[0009] Preferably, the locking assembly is divided into a pneumatic locking mechanism and a pin positioning mechanism. The pneumatic locking mechanism includes a fixed plate on the base plate, a chain on the outer side of the fixed plate, and a swing rod hinged to the base plate. Both the fixed plate and the swing rod are located outside the bearing mounting base and are arranged at a 90° angle. The other end of the chain is located on the swing rod. A brake band is located on the inner side of the fixed plate, and the other end of the brake band is located on the chain. A push-back cylinder is located between the base plate and the top plate, and the output end of the push-back cylinder cooperates with the swing rod.

[0010] Preferably, the pin locking mechanism includes a pin hole post set on the base plate, a graphite copper sleeve provided on the top plate, and the graphite copper sleeve and the pin hole post arranged coaxially. A locking pin is provided inside the graphite copper sleeve, and a spring is wound between the locking pin and the graphite copper sleeve. A bridging plate is provided at the top of the locking pin. A top rod is provided next to the graphite copper sleeve, and the upper end of the top rod is connected to the bridging plate. A mounting seat is provided at the lower end of the top plate, and a rocker arm is hinged on the mounting seat. One end of the rocker arm contacts the bottom of the top rod, and a pedal is provided on the end of the rocker arm away from the top rod.

[0011] Preferably, the pedal is provided with an anti-slip mat.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The present invention discloses a rotating seat base, which enables the entire seat to rotate freely by setting a rotating component. It also features two locking and releasing methods: an electro-pneumatic brake with a clamp locking mechanism, allowing for one-second release and one-second locking, which is convenient, quick, and easy to operate; and a foot pedal control for locking and releasing when there is no compressed air source, improving compatibility with different logging vehicle models. Furthermore, the rotating base employs a double-bearing combination structure, making the structure more stable and robust, with a small installation clearance to prevent seat wobbling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotating base structure of this utility model; Figure 3 This is a utility model Figure 2 Exploded view; Figure 4 This is a utility model Figure 2 A sectional view; Figure 5 These are diagrams showing different states of the pneumatic locking mechanism of this utility model; Figure 6 These are a state diagram and a cross-sectional view of the release state of the pin locking mechanism of this utility model; Figure 7 These are a state diagram and a cross-sectional view of the pin-shaft locking mechanism of this utility model in its locking state. In the attached diagram: 1. Seat; 2. Buffer unit; 3. Base plate; 4. Top plate; 5. Bearing mounting base; 6. Tapered roller bearing; 7. Central shaft; 8. Through groove; 9. Fixing screw; 10. Bearing pressure block; 11. Thrust ball bearing; 12. Deep groove ball bearing; 13. Fixing plate; 14. Chain; 15. Swing rod; 16. Brake band; 17. Press-back cylinder; 18. Pin hole post; 19. Graphite copper sleeve; 20. Locking pin; 21. Spring; 22. Bridge plate; 23. Push rod; 24. Mounting seat; 25. Rocker; 26. Pedal; 27. Anti-slip mat. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0015] Please see Figures 1 to 7 This utility model provides a rotating base for a seat 1, the technical solution of which is as follows: The system includes a logging vehicle, in which a seat 1 is provided in the cab of the logging vehicle. The seat 1 is installed in the cab via a base plate 3. A buffer unit 2 is provided at the lower end of the seat 1, and a top plate 4 is provided at the lower end of the buffer unit 2. A rotating assembly and a locking assembly are provided between the base plate 3 and the top plate 4 for rotating the seat 1 and fixing the seat 1 after rotation.

[0016] By incorporating a rotating component and using a dual-bearing structure for the rotating base, the entire seat 1 can rotate freely. It also features two locking and releasing methods: First, it employs an electro-pneumatic brake band 16 for clamping and locking. Compressed air powers a cylinder to clamp the outer ring of the bearing fixing seat, allowing for rapid locking of the seat 1. Most importantly, it can be locked in any position, offering convenient one-button electronic locking and releasing. Second, when there is no compressed air source, locking and releasing can be controlled by a foot pedal. The foot pedal 26 controls the closing or disengagement of the locking pin 20 with the pin hole to lock and release the seat 1. This is a backup function, allowing locking of the seat 1 in four positions, improving compatibility with different logging vehicle models.

[0017] The rotating assembly includes a bearing mounting base 5 mounted on a base plate 3. A tapered roller bearing 6 is provided inside the bearing mounting base 5. A central shaft 7 is provided at the lower end of the top plate 4, and the central shaft 7 is coaxially arranged with the bearing mounting base 5. The central shaft 7 is inserted into the bearing mounting base 5 and cooperates with the tapered roller bearing 6. A through groove 8 is provided at the center of the bottom of the base plate 3, and a fixing screw 9, a bearing pressure block 10, and a thrust ball bearing 11 are provided in the through groove 8. The fixing screw 9 passes through the bearing pressure block 10 and the thrust ball bearing 11 and connects to the central shaft 7. A deep groove ball bearing 12 is provided at the upper end of the bearing mounting base 5, and the deep groove ball bearing 12 cooperates with the central shaft 7.

[0018] The locking assembly is divided into a pneumatic locking mechanism and a pin locking mechanism. The pneumatic locking mechanism includes a fixed plate 13 set on the base plate 3. A chain 14 is provided on the outer side of the fixed plate 13. A swing rod 15 is hinged on the base plate 3. The fixed plate 13 and the swing rod 15 are both set outside the bearing mounting base 5, and the fixed plate 13 and the swing rod 15 are set at a 90° angle to each other. The other end of the chain 14 is set on the swing rod 15. A brake band 16 is provided on the inner side of the fixed plate 13, and the other end of the brake band 16 is set on the chain 14. A push-back cylinder 17 is provided between the base plate 3 and the top plate 4, and the output end of the push-back cylinder 17 cooperates with the swing rod 15.

[0019] The tapered roller bearing 6 and the deep groove ball bearing 12 are sequentially installed into the bearing mounting base 5. Then, the central shaft 7 of the top plate 4 is inserted into the bearing inner hole, and the stepped surface of the central shaft 7 contacts the inner ring of the tapered roller bearing 6 for downward limiting. Finally, the thrust ball bearing 11, the bearing pressure block 10, and the fixing screw 9 are sequentially installed from the bottom of the bearing mounting base 5. The central shaft 7 and the top plate 4 are locked with the fixing screw 9 to prevent them from moving upward. After the bearing is installed, the top plate 4 can rotate relative to the bearing mounting base 5. The seat 1 is installed on the rotating top plate 4 with the central shaft 7, and the bearing mounting base 5 is installed on the cab floor, allowing the seat 1 to rotate freely.

[0020] The pneumatic locking mechanism is installed under the top plate 4. As long as the brake band 16 clamps the bearing mounting base 5, the top plate 4 and the bearing mounting base 5 will remain relatively stationary. One end of the chain 14 is fixed to the fixed plate 13, and the other end is connected to the swing rod 15. The return cylinder 17 of the single-acting spring 21 is controlled by a solenoid valve. Compressed air is introduced from the air inlet, causing the push rod of the return cylinder 17 to extend and push the chain 14 to tension the swing rod 15 around the central axis 7 of the swing rod 15. As the swing rod 15 swings counterclockwise, the chain 14 will be driven to tighten and contract. After the chain 14 is tightened, it will press the brake band 16 and contract towards the rotation central axis 7, tightly pressing the outer ring of the bearing mounting base 5. The outer ring of the bearing mounting base 5 has been knurled for anti-slip treatment, so the brake band 16 can firmly hold the outer ring of the bearing mounting base 5. Thus, the seat 1 is locked.

[0021] When release is needed, simply disconnect the air intake of the pressurized cylinder 17, and the push rod will automatically retract. The brake band 16 is composed of brake pads and manganese steel sheets. When locked, the manganese steel sheets deform. When the external force is removed, the manganese steel sheets will rebound. Therefore, when the chain 14 is no longer tensioned, the brake pads will rebound and no longer contact the outer ring of the bearing mounting base 5, thus achieving release. The seat 1 can then rotate freely.

[0022] The pin locking mechanism includes a pin hole post 18 set on the base plate 3, a graphite copper sleeve 19 set on the top plate 4, and the graphite copper sleeve 19 and the pin hole post 18 are arranged coaxially. A locking pin 20 is set inside the graphite copper sleeve 19. A spring 21 is wound between the locking pin 20 and the graphite copper sleeve 19. A bridging plate 22 is set on the top of the locking pin 20. A top rod 23 is set next to the graphite copper sleeve 19. The upper end of the top rod 23 is connected to the bridging plate 22. A mounting seat 24 is set at the lower end of the top plate 4. A rocker arm 25 is hinged on the mounting seat 24. One end of the rocker arm 25 contacts the bottom of the top rod 23. A pedal 26 is set on the end of the rocker arm 25 away from the top rod 23. An anti-slip pad 27 is set on the pedal 26 to provide an anti-slip effect.

[0023] Fix the pad to the top of the locking pin 20, and fix the bridge plate 22 to the top of the top rod 23. The bridge plate 22 has a slot that can be inserted into the locking pin 20, so that the pad can be in contact with the surface of the bridge plate 22. The rocker 25 is in contact with the bottom of the top rod 23. When the rocker 25 is stepped on, the top rod 23 will be lifted. When the top rod 23 rises, it will also drive the locking pin 20 to rise. When it is lifted to the limit, the locking pin 20 has completely disengaged from the pin hole 18. At this point, the seat 1 can rotate freely.

[0024] When the seat 1 is rotated until the locking pin 20 is approximately aligned with the pin hole 18, after releasing the foot pedal 26, the locking pin 20 will fall downwards under the force of the spring 21, and the front conical part will insert into the pin hole 18 to complete the closure; at this point, the top plate 4 and the bearing mounting base 5 will remain relatively stationary, completing the locking of the seat 1; when using a pneumatic locking mechanism to lock the seat 1, the locking pin is used to lock the rocker 25, thereby preventing the locking pin 20 from falling.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A seat rotating base, characterized in that, include: The logging vehicle has a seat (1) in the driver's cab. The seat (1) is installed in the driver's cab via a base plate (3). The lower end of the seat (1) is provided with a buffer unit (2), and the lower end of the buffer unit (2) is provided with a top plate (4). A rotating component and a locking component are provided between the base plate (3) and the top plate (4) for rotating the seat (1) and fixing the seat (1) after rotation.

2. The seat rotating base according to claim 1, characterized in that: The rotating assembly includes a bearing mounting base (5) set on the base plate (3), a tapered roller bearing (6) is provided in the bearing mounting base (5), a central shaft (7) is provided at the lower end of the top plate (4), and the central shaft (7) is coaxially arranged with the bearing mounting base (5). The central shaft (7) is inserted into the bearing mounting base (5) and cooperates with the tapered roller bearing (6). A through groove (8) is provided at the center of the bottom of the base plate (3), and a fixing screw (9), a bearing pressure block (10) and a thrust ball bearing (11) are provided in the through groove (8). The fixing screw (9) passes through the bearing pressure block (10) and the thrust ball bearing (11) and connects to the central shaft (7). A deep groove ball bearing (12) is provided at the upper end of the bearing mounting base (5), and the deep groove ball bearing (12) cooperates with the central shaft (7).

3. The seat rotating base according to claim 2, characterized in that: The locking assembly is divided into a pneumatic locking mechanism and a pin locking mechanism. The pneumatic locking mechanism includes a fixed plate (13) set on the base plate (3). A chain (14) is provided on the outer side of the fixed plate (13). A swing rod (15) is hinged on the base plate (3). The fixed plate (13) and the swing rod (15) are both set outside the bearing mounting base (5). The fixed plate (13) and the swing rod (15) are set at a 90° angle around the circumference. The other end of the chain (14) is set on the swing rod (15). A brake band (16) is provided on the inner side of the fixed plate (13). The other end of the brake band (16) is set on the chain (14). A push-back cylinder (17) is provided between the base plate (3) and the top plate (4). The output end of the push-back cylinder (17) cooperates with the swing rod (15).

4. The seat rotating base according to claim 3, characterized in that: The pin locking mechanism includes a pin hole post (18) set on the base plate (3), a graphite copper sleeve (19) set on the top plate (4), and the graphite copper sleeve (19) and the pin hole post (18) are arranged coaxially. A locking pin (20) is set inside the graphite copper sleeve (19). A spring (21) is wound between the locking pin (20) and the graphite copper sleeve (19). A bridging plate (22) is set on the top of the locking pin (20). A top rod (23) is set next to the graphite copper sleeve (19). The upper end of the top rod (23) is connected to the bridging plate (22). A mounting seat (24) is set at the lower end of the top plate (4). A rocker plate (25) is hinged on the mounting seat (24). One end of the rocker plate (25) contacts the bottom of the top rod (23). A pedal (26) is set on the end of the rocker plate (25) away from the top rod (23).

5. The seat rotating base according to claim 4, characterized in that: The pedal (26) is provided with an anti-slip pad (27).

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