Dustproof and waterproof structure of lorry-mounted crane slewing mechanism

Abstract

The utility model discloses a dustproof and waterproof structure of a lorry-mounted crane slewing mechanism, and relates to the technical field of lorry-mounted cranes. The carriage of the vehicle body is fixedly connected with a base, a rotating disc is arranged above the base, the top surface of the rotating disc is fixedly connected with a movable seat, the top surface of the base is fixedly connected with a ring sleeve, the inner side wall of the ring sleeve is internally and rotatably connected with a gear ring, and the inner wall of the ring sleeve and one side of the gear ring are provided with a sealing groove; a sealing ring is arranged in a groove opening of the sealing groove, a protruding ring is fixedly connected to the top face of the ring sleeve, internal threads are arranged on the inner side wall of the protruding ring, and a first protection plate and a second protection plate are detachably arranged in a ring opening of the protruding ring. The sealing ring has good dustproof and waterproof effects, the installed sealing ring can be protected, the sealing ring is prevented from being scratched or broken by sandy soil or pebbles, the dustproof and waterproof effects of the sealing ring are further prevented from being damaged, and therefore the service life of the sealing ring is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of truck-mounted crane technology, specifically a dustproof and waterproof structure for the slewing mechanism of a truck-mounted crane. Background Technology

[0002] A truck-mounted crane is a type of engineering machinery that integrates lifting, transportation, and loading / unloading functions. It is usually mounted on a truck and is widely used in the lifting and transportation of infrastructure materials in municipal construction, coal mining, landscaping, and other fields.

[0003] Existing truck-mounted crane slewing mechanisms are not effective at preventing dust and water damage during use. Water or debris can easily enter the slewing support, which can dilute the lubricating grease, disrupt the lubrication process, and lead to machine malfunction. Therefore, in order to address the above problems, the inventors have proposed a dust and water-proof structure for truck-mounted crane slewing mechanisms. Utility Model Content

[0004] In order to solve the problem of poor dust and water protection performance of existing truck-mounted crane slewing mechanisms during use, the purpose of this utility model is to provide a dust and water protection structure for truck-mounted crane slewing mechanisms.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a dustproof and waterproof structure for a truck-mounted crane slewing mechanism, comprising a vehicle body, a base fixedly connected to the vehicle body's cargo compartment, a rotating disk disposed above the base, a movable seat fixedly connected to the top surface of the rotating disk, a ring fixedly connected to the top surface of the base, a toothed ring rotatably connected to the inner side wall of the ring, a sealing groove disposed on one side of the toothed ring on the inner wall of the ring, a sealing ring disposed in the opening of the sealing groove, a protruding ring fixedly connected to the top surface of the ring, an internal thread disposed on the inner side wall of the protruding ring, and a first protective plate and a second protective plate detachably disposed in the opening of the protruding ring.

[0006] Preferably, the movable seat has a large arm at the end away from the rotating disk, and a hook is provided below the large arm that can be raised and lowered. The base has a driver inside, and a gear is fixedly connected to the output shaft of the driver. The gear is located inside the ring of the gear ring and meshes with the gear ring. Activating the driver in the base causes the gear to rotate. Through the meshing of the gear and the gear ring, and with the cooperation of the ring sleeve, the gear ring can rotate smoothly. Through the cooperation of the pin and the pin hole, the rotating disk can rotate, which in turn causes the large arm to drive the hook to rotate. The outer wall of the sealing ring is provided with an annular groove, and the inner wall of the sealing groove is provided with an annular block. The annular groove and the annular block correspond to and engage with each other. The sealing ring is mainly used for dust and water protection, preventing water or debris from entering the rotating support, thereby preventing dilution of the lubricating grease, damage to the lubrication state, and preventing wear, vibration, and abnormal noise caused by the result. The annular groove and the annular block cooperate to install the sealing ring.

[0007] Preferably, a connecting plate is fixedly connected to the bottom surface of the rotating disk, and a pin hole is provided through the bottom surface of the connecting plate. A pin is fixedly connected to the top surface of the toothed ring, and the pin corresponds to and cooperates with the pin hole. When the toothed ring rotates, the rotating disk can be rotated through the cooperation of the pin and the pin hole, which in turn allows the boom to drive the hook to rotate. The first protective plate and the second protective plate correspond to each other, and the cross-section of the combined first and second protective plates is circular. The combined first and second protective plates are annular. The first and second protective plates are used to protect the sealing ring after installation, preventing sand or stones from scratching or breaking the sealing ring, thereby preventing the sealing ring from breaking and extending its service life.

[0008] Preferably, a retaining plate is fixedly connected to the end face of the first protective plate, and a T-shaped retaining groove is provided on the end face of the second protective plate. The retaining plate corresponds to and engages with the T-shaped retaining groove. A stepped groove is provided through the side wall of the second protective plate, and a threaded hole is provided through the side wall of the retaining plate. A fastening bolt is provided on one side of the second protective plate. The fastening bolt passes through the stepped groove and engages with the threaded hole. External threads are provided on the outer side walls of both the first and second protective plates. The external threads correspond to and engage with the internal threads. When installing and using the first and second protective plates, the sealing ring must be installed first. Then, the first and second protective plates are joined together, ensuring the pin position is... Place the first protective plate between the first and second protective plates, then insert the retaining plate into the T-shaped slot, ensuring that the top and bottom surfaces of the first and second protective plates are flush. Next, insert the fastening bolts into the stepped groove and mate them with the threaded holes to complete the assembly of the first and second protective plates. Then, tighten the assembled first and second protective plates so that the external threads mate with the internal threads of the convex ring, allowing the first and second protective plates to be installed inside the ring opening of the convex ring. When installing the first and second protective plates, ensure that the installed first and second protective plates correspond to the sealing ring to protect the sealing ring and prevent sand or stones from scratching or breaking it.

[0009] Compared with the prior art, the advantages of this utility model are as follows: it has better dustproof and waterproof effect and long service life. Through the cooperation of the annular groove and the annular block, the sealing ring can be easily installed. The sealing ring can be used for dustproof and waterproof, preventing water or debris from entering the interior of the rotary support, thereby preventing dilution of the lubricating grease and damage to the lubrication state. Therefore, it can avoid failures such as wear, vibration and abnormal noise caused by such reasons. In addition, a first protective plate and a second protective plate are provided. After the first protective plate and the second protective plate are combined and installed, they can be used to protect the installed sealing ring, preventing sand or stones from scratching or breaking the sealing ring, thereby preventing damage to the dustproof and waterproof effect of the sealing ring and extending its service life. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2This is a schematic diagram showing the interaction between the rotating disk and the base of this utility model.

[0013] Figure 3 This is another schematic diagram showing the cooperation between the rotating disk and the base of this utility model.

[0014] Figure 4 This is a schematic diagram of the fit between the toothed ring and the ring sleeve of this utility model.

[0015] Figure 5 This is a schematic diagram of the fit between the sealing ring and the ring sleeve of this utility model.

[0016] Figure 6 This is a schematic diagram showing the cooperation between the first protective plate and the second protective plate of this utility model.

[0017] Figure 7 This is an enlarged view of section A of this utility model.

[0018] Figure 8 This is an enlarged view of section B of this utility model.

[0019] In the diagram: 1. Vehicle body; 2. Base; 3. Rotating disc; 4. Movable seat; 5. Main arm; 6. Hook; 7. Connecting disc; 8. Ring sleeve; 9. Gear ring; 10. Gear; 11. Sealing groove; 12. Sealing ring; 13. Annular groove; 14. Protruding ring; 15. Internal thread; 16. First protective plate; 17. Clamping plate; 18. Threaded hole; 19. Second protective plate; 20. T-shaped groove; 21. Stepped groove; 22. Fastening bolt; 23. External thread; 24. Pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Figure 1-8 As shown, this utility model provides a dustproof and waterproof structure for a truck-mounted crane slewing mechanism, including a vehicle body 1, a base 2 fixedly connected to the carriage of the vehicle body 1, a rotating disk 3 arranged above the base 2, a movable seat 4 fixedly connected to the top surface of the rotating disk 3, a ring 8 fixedly connected to the top surface of the base 2, a toothed ring 9 rotatably connected to the inner side wall of the ring 8, a sealing groove 11 arranged on the inner wall of the ring 8 and on one side of the toothed ring 9, a sealing ring 12 arranged in the groove of the sealing groove 11, a protruding ring 14 fixedly connected to the top surface of the ring 8, an internal thread 15 arranged on the inner side wall of the protruding ring 14, and a first protective plate 16 and a second protective plate 19 detachably arranged in the ring opening of the protruding ring 14.

[0022] The movable seat 4 is provided with a large arm 5 at the end away from the rotating disk 3. A hook 6 is provided below the large arm 5 that can be raised and lowered. The base 2 is provided with a driver. The output shaft of the driver is fixedly connected to a gear 10. The gear 10 is located in the ring mouth of the gear ring 9 and meshes with the gear ring 9.

[0023] By adopting the above technical solution, the driver in the base 2 is activated to make the gear 10 rotate. Through the meshing of the gear 10 and the gear ring 9, and with the cooperation of the ring sleeve 8, the gear ring 9 can rotate smoothly. Through the cooperation of the pin 24 and the pin hole, the rotating disk 3 can rotate, which in turn makes the boom 5 drive the hook 6 to rotate.

[0024] The outer wall of the sealing ring 12 is provided with an annular groove 13, and the inner wall of the sealing groove 11 is provided with an annular block. The annular groove 13 corresponds to and engages with the annular block.

[0025] By adopting the above technical solution, the sealing ring 12 is mainly used for dust and water protection, preventing water or debris from entering the interior of the slewing support, thereby preventing the dilution of the lubricating grease, damage to the lubrication state, and avoiding failures such as wear, vibration and abnormal noise caused by it. The sealing ring 12 is installed through the mutual cooperation between the annular groove 13 and the annular block.

[0026] A connecting plate 7 is fixedly connected to the bottom surface of the rotating disk 3. A pin hole is provided through the bottom surface of the connecting plate 7. A pin 24 is fixedly connected to the top surface of the toothed ring 9. The pin 24 corresponds to and cooperates with the pin hole.

[0027] By adopting the above technical solution, when the toothed ring 9 rotates, the rotating disk 3 can be rotated through the cooperation between the pin 24 and the pin hole, which in turn can cause the boom 5 to drive the hook 6 to rotate.

[0028] The first protective plate 16 corresponds to the second protective plate 19, and the cross-section of the combined first protective plate 16 and second protective plate 19 is circular.

[0029] By adopting the above technical solution, the combined first protective plate 16 and second protective plate 19 are in the shape of a ring. The first protective plate 16 and the second protective plate 19 are used to protect the installed sealing ring 12, so as to prevent sand or stones from scratching or breaking the sealing ring 12, thereby preventing the dustproof and waterproof state of the sealing ring 12 from being broken, and extending its service life.

[0030] The end face of the first protective plate 16 is fixedly connected to a clamping plate 17, and the end face of the second protective plate 19 is provided with a T-shaped clamping groove 20. The clamping plate 17 corresponds to and engages with the T-shaped clamping groove 20. A stepped groove 21 is provided through the side wall of the second protective plate 19, and a threaded hole 18 is provided through the side wall of the clamping plate 17. A fastening bolt 22 is provided on one side of the second protective plate 19. The fastening bolt 22 passes through the stepped groove 21 and engages with the threaded hole 18. Both the outer side walls of the first protective plate 16 and the second protective plate 19 are provided with external threads 23, and the external threads 23 correspond to and engage with the internal threads 15.

[0031] By adopting the above technical solution, when installing and using the first protective plate 16 and the second protective plate 19, the sealing ring 12 must first be installed. Then, the first protective plate 16 and the second protective plate 19 are aligned, with the pin 24 positioned between them. Next, the retaining plate 17 is inserted into the T-shaped slot 20, ensuring the upper and lower surfaces of the first protective plate 16 and the second protective plate 19 are flush. Finally, the fastening bolt 22 is inserted into the stepped groove 21 and engages with the threaded hole 18, thus completing the first... The first protective plate 16 and the second protective plate 19 are assembled. Then, the assembled first protective plate 16 and the second protective plate 19 are screwed so that the external thread 23 engages with the internal thread 15 of the convex ring 14, so that the first protective plate 16 and the second protective plate 19 are installed in the ring opening of the convex ring 14. When installing the first protective plate 16 and the second protective plate 19, the installed first protective plate 16 and the second protective plate 19 must correspond to the sealing ring 12 to complete the protection of the sealing ring 12 and prevent sand or stones from scratching or breaking the sealing ring 12.

[0032] Working principle: When this utility model is in use, the driver in the base 2 is activated to make the gear 10 rotate. Through the meshing of the gear 10 and the gear ring 9, and with the cooperation of the ring sleeve 8, the gear ring 9 can rotate smoothly. Through the cooperation of the pin 24 and the pin hole, the rotating disk 3 can rotate, which in turn makes the arm 5 drive the hook 6 to rotate.

[0033] The sealing ring 12 is installed by the cooperation of the annular groove 13 and the annular block. The sealing ring 12 is mainly used for dust and water protection, preventing water or debris from entering the interior of the slewing support, thereby preventing the dilution of the grease, damage to the lubrication state, and avoiding wear, vibration and abnormal noise caused by the result.

[0034] After the sealing ring 12 is installed, the first protective plate 16 and the second protective plate 19 are connected, and the pin 24 is located between the first protective plate 16 and the second protective plate 19. Then, the clamping plate 17 is inserted into the T-shaped clamping groove 20, and the upper and lower surfaces of the first protective plate 16 and the second protective plate 19 are flush. After that, the fastening bolt 22 is inserted into the stepped groove 21 and mates with the threaded hole 18 to complete the assembly of the first protective plate 16 and the second protective plate 19.

[0035] Next, screw the assembled first protective plate 16 and second protective plate 19 so that the external thread 23 engages with the internal thread 15 of the convex ring 14, so that the first protective plate 16 and second protective plate 19 are installed in the ring opening of the convex ring 14. When installing the first protective plate 16 and second protective plate 19, the installed first protective plate 16 and second protective plate 19 must correspond to the sealing ring 12 to complete the protection of the sealing ring 12 and prevent sand or stones from scratching or breaking the sealing ring 12.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane, comprising a vehicle body (1), characterized in that: The car body (1) is fixedly connected with a base (2), the upper portion of the base (2) is provided with a rotating disc (3), the top surface of the rotating disc (3) is fixedly connected with a movable seat (4), the top surface of the base (2) is fixedly connected with a ring sleeve (8), the inner side wall of the ring sleeve (8) is embeddedly and rotatably connected with a gear ring (9), the inner wall of the ring sleeve (8) and on one side of the gear ring (9) is provided with a sealing groove (11), the groove opening of the sealing groove (11) is provided with a sealing ring (12), the top surface of the ring sleeve (8) is fixedly connected with a convex ring (14), the inner side wall of the convex ring (14) is provided with an internal thread (15), the ring opening of the convex ring (14) is detachably provided with a first protective plate (16) and a second protective plate (19).

2. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The end, away from the rotating disc (3), of the movable seat (4) is provided with a large arm (5), the lower portion of the large arm (5) is provided with a hook (6) which can be lifted and lowered.

3. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The inside of the base (2) is provided with a driver, the output shaft end of the driver is fixedly connected with a gear (10), the gear (10) is located in the ring opening of the gear ring (9), and the gear (10) is engaged with the gear ring (9).

4. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The outer side wall of the sealing ring (12) is provided with an annular clamping groove (13), the inner side wall of the sealing groove (11) is provided with an annular clamping block, the annular clamping groove (13) corresponds to and clamps the annular clamping block.

5. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The bottom surface of the rotating disc (3) is fixedly connected with a connecting disc (7), the bottom surface of the connecting disc (7) is provided with a pin hole which penetrates through, the top surface of the gear ring (9) is fixedly connected with a pin rod (24), the pin rod (24) corresponds to and cooperates with the pin hole.

6. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The first protective plate (16) corresponds to the second protective plate (19), and the cross section of the combined first protective plate (16) and second protective plate (19) is circular.

7. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 1, characterized in that, The end surface of the first protective plate (16) is fixedly connected with a clamping plate (17), the end surface of the second protective plate (19) is provided with a T-shaped clamping groove (20), the clamping plate (17) corresponds to and clamps the T-shaped clamping groove (20).

8. The dustproof and waterproof structure of a slewing mechanism of a truck-mounted crane according to claim 7, characterized in that, The side wall of the second protective plate (19) is provided with a stepped groove (21) which penetrates through, the side wall of the clamping plate (17) is provided with a threaded hole (18) which penetrates through, one side of the second protective plate (19) is provided with a fastening bolt (22), the fastening bolt (22) penetrates through the stepped groove (21) and cooperates with the threaded hole (18), the outer side wall of the first protective plate (16) and the second protective plate (19) are both provided with an external thread (23), the external thread (23) corresponds to and cooperates with the internal thread (15).

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