Telescopic arm driving structure of slagging-off vehicle

Abstract

The telescopic arm driving structure comprises a telescopic arm device arranged on a vehicle body, the telescopic arm device comprises a first arm body, the first arm body is arranged at the end, close to a slagging-off head, of the vehicle body in a lifting mode through a jacking mechanism, the first arm body is hinged to the jacking mechanism, and the first arm body is arranged on the vehicle body. The telescopic arm driving structure comprises a vehicle body, a first arm body is hinged to the vehicle body through a jacking mechanism, a second arm body is arranged on the first arm body in a telescopic mode, and a third arm body is arranged in the second arm body in a telescopic mode. The first arm body does not need to be arranged to be as long as the second arm body, compared with the prior art, part of the structure of the first arm body is omitted, space is saved, the weight of the first arm body is reduced, and manufacturing cost is reduced; the weight of the first arm body is reduced, so that the load of the gear rack driving mechanism and the telescopic oil cylinder is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and particularly relates to a telescopic arm driving structure of a slag scraper. Background Art

[0002] At present, aluminum alloy materials are usually smelted in a furnace, and during the smelting process, slag is usually removed from the furnace by a slag removal vehicle with a slag removal shovel. A traditional slag removal vehicle usually includes a vehicle body, a telescopic arm mechanism disposed on the vehicle body, and a slag removal head disposed on the telescopic arm mechanism. The telescopic arm mechanism usually has a three-section arm body.

[0003] For example, the Chinese invention patent with the publication number of "CN102756119B" discloses a hydraulic scraper with telescopic lifting rod, which includes a slewing mechanism installed on a base, a front hinge support seat and a rear hinge support seat are arranged on the slewing mechanism, a tilting hydraulic cylinder is respectively hinged on the front hinge support seat, and a lifting hydraulic cylinder is respectively hinged on the rear hinge support seat, and also includes a pair of parallelogram connecting rod mechanisms of the same shape and symmetrical to each other, a lifting rod telescopic mechanism is arranged between the two parallelogram connecting rod mechanisms, the rear side connecting rods of the two parallelogram connecting rod mechanisms are fixed on the fixed arms of the lifting rod telescopic mechanism, the top of the piston rod of the tilting hydraulic cylinder is hinged on the top of the front side connecting rod of the parallelogram connecting rod mechanism, and the piston rod end of the lifting hydraulic cylinder is hinged on the bottom of the rear side connecting rod of the parallelogram connecting rod mechanism. The whole machine of the present invention is light in weight, simple in structure, small in impact, small in required plant space, wider in scope of application, simplified in structure, and easier to manufacture.

[0004] Although the slag truck has the advantages of wide application range and easy manufacturing, its three arms are chain-driven, and the motor driving the chain requires a large driving force and is relatively expensive. In addition, the driving motor and the driving sprocket must be installed inside the telescopic arm mechanism. Therefore, the lengths of the arms of the first and second arms need to be made the same, resulting in a large weight of the entire telescopic arm mechanism, a high cost, and low space utilization. The structure of the telescopic arm mechanism needs to be optimized.

[0005] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Utility Model Content

[0006] The utility model aims to provide a telescopic arm driving structure of a slag scraper truck with low manufacturing cost and simple structure.

[0007] In order to achieve the above object, the utility model adopts the following technical solution:

[0008] A telescopic arm driving structure of a slag scraper truck comprises a telescopic arm device arranged on a vehicle body, the telescopic arm device comprising a first arm body, the first arm body being liftable and arranged at one end of the vehicle body close to a slag scraper head through a jacking mechanism, the first arm body being hinged to the jacking mechanism, a second arm body being telescopically arranged on the first arm body, the second arm body being telescopically arranged along its length direction, two ends of the second arm body respectively extending out of the first arm body, a plurality of support rods for supporting the second arm body being rotatably arranged at the lower end of the first arm body, the second arm body being arranged on the support rods, the second arm body being telescopically connected to the first arm body through a gear rack driving mechanism, a third arm body being telescopically arranged in the second arm body, the third arm body being telescopically arranged along its length direction, the third arm body being telescopically connected to the second arm body through a telescopic oil cylinder, and a first hook for the slag scraper head to buckle and hang is provided at one end of the third arm body away from the vehicle body.

[0009] Furthermore, a plurality of guide rods are rotatably provided at the upper end of the first arm body, and the second arm body is located between the guide rods and the support rods.

[0010] Furthermore, the rack and pinion drive mechanism includes racks symmetrically arranged on both sides of the second arm body and a driving gear symmetrically arranged on the inner side of the first arm body, and drive motors for driving the gears to rotate are respectively arranged at positions corresponding to the two driving gears on the outer side of the first arm body.

[0011] Furthermore, driven gears are provided at positions on both sides of the first arm body corresponding to the racks, and the driven gears are rotatably provided on the first arm body.

[0012] Furthermore, one end of the telescopic oil cylinder is fixedly mounted on the second arm body, and an output end of the telescopic oil cylinder is fixedly mounted on the third arm body.

[0013] Furthermore, the jacking mechanism is provided with two groups, and the two groups of jacking mechanisms are symmetrically arranged on the vehicle body with the telescopic arm device as the center. The jacking mechanism includes a support frame fixed on the vehicle body, an arch frame with one end hinged to the top of the support frame, a connecting frame with one end hinged to the side of the support frame close to the slag scraper head, and a jacking cylinder fixed on the vehicle body, the other end of the arch frame is hinged to the first arm body, the other end of the connecting piece is hinged to the first arm body, and the output end of the jacking cylinder is hinged to the bottom of the arch frame.

[0014] By adopting the above-mentioned design scheme, the beneficial effects of the utility model are:

[0015] The telescopic arm driving structure of the slag truck of the utility model has a first arm body that is hingedly arranged on the vehicle body through a jacking mechanism, and the first arm body only needs to retain a partial structure for the jacking mechanism to be hinged, and the first arm body does not need to be arranged to be the same length as the second arm body. Compared with the prior art, part of the structure of the first arm body is omitted, which saves space, reduces the weight of the first arm body, and reduces the manufacturing cost; at the same time, the weight reduction of the first arm body can also reduce the load of the rack and pinion driving mechanism and the telescopic cylinder, and extend the service life; the second arm body adopts rack and pinion transmission, which has a large load-bearing capacity and high stability and precision; the third arm body is driven by the telescopic cylinder, and two telescopic control modes are set, so that the second arm body and the third arm body can perform telescopic actions independently, which is convenient for operation.

[0016] Furthermore, the jacking mechanism can drive the telescopic arm device and the slag scraper head to move up and down, and the overall flexibility is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the arm driving structure of the utility model being installed on a vehicle body.

[0018] Figure 2 It is a schematic diagram of the telescopic arm device in the arm driving structure of the utility model, in which the slag scraping head is separated from the third arm body.

[0019] Figure 3 It is a schematic diagram of the telescopic arm device in the arm driving structure of the utility model, in which part of the structure of the first arm is omitted, and the slag scraper head is separated from the third arm.

[0020] Figure 4 It is a schematic diagram of a cross-section of the telescopic arm device in the arm driving structure of the utility model, in which the slag scraper head is omitted.

[0021] Figure 5 This is a schematic diagram of the arm driving structure of the utility model being installed on a vehicle body, in which the lifting mechanism drives the telescopic arm device to rise.

[0022] In the figure:

[0023] 1- telescopic arm device; 10- vehicle body;

[0024] 11-first arm body; 12-second arm body;

[0025] 13-the third arm body; 14-the telescopic cylinder;

[0026] 111-support rod; 112-guide rod;

[0027] 131-hook; 132-hanging hole;

[0028] 2-lifting mechanism; 20-slag removal head;

[0029] 21-support frame;

[0030] 22-arch frame; 23-connecting frame;

[0031] 24-lifting cylinder; 31-rack;

[0032] 32-driving gear; 33-driving motor;

[0033] 34-Driven gear. DETAILED DESCRIPTION

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 5 As shown, a telescopic arm driving structure of a slag scraper truck includes a telescopic arm device 1 arranged on a vehicle body 10, the telescopic arm device 1 includes a first arm body 11, the first arm body 11 is arranged at one end of the vehicle body 10 close to the slag scraper head 20 and can be lifted and lowered by a jacking mechanism 2, the first arm body 11 is hinged to the jacking mechanism 2, a second arm body 12 is telescopically provided on the first arm body 11, the second arm body 12 is telescopic along its length direction, both ends of the second arm body 12 extend out of the first arm body 11 respectively, a plurality of support rods 111 for supporting the second arm body 12 are rotatably provided at the lower end of the first arm body 11, the support rods 111 are arranged horizontally at intervals, preferably, the utility model is provided with four support rods 111, the four support rods 111 are arranged horizontally at intervals, and the second arm body 12 is arranged on the top of the support rods 111.

[0036] Preferably, a plurality of guide rods 112 are rotatably provided at the upper end of the first arm body 11, and the second arm body 12 is arranged at the bottom of the guide rod 112 and is located between the guide rod 112 and the support rod 111. Preferably, two guide rods 112 are provided in the utility model, and the support rod 111 plays a supporting role and a guiding role for the second arm body 12. The guide rod 112 plays a guiding role for the second arm body 12 and can also cooperate with the support rod 111 to limit the second arm body 12 to prevent the second arm body 12 from shifting up and down during movement.

[0037] The second arm body 12 is telescopically connected to the first arm body 11 through a gear rack drive mechanism. Specifically, the gear rack drive mechanism includes racks 31 symmetrically arranged on both sides of the second arm body 12 and a driving gear 32 symmetrically arranged on the inner side of the first arm body 11. The positions of the two driving gears 32 on the outer side of the first arm body 11 are respectively provided with driving motors 33 for driving the driving gears 32 to rotate; preferably, the positions of the two sides of the first arm body 11 corresponding to the racks 31 are also provided with driven gears 34, and the driven gears 34 are rotatably arranged on the first arm body 11. The driven gears 34 and the driving gears 32 are arranged to drive the racks 31 to move together, which can reduce the load of the driving gears 32, thereby improving the service life of the driving motor 33.

[0038] The third arm body 13 is telescopically arranged in the second arm body 12, and the third arm body 13 is telescopically arranged along its length direction. The third arm body 13 is telescopically connected to the second arm body 12 through a telescopic oil cylinder 14. Specifically, one end of the telescopic oil cylinder 14 is fixedly arranged on the second arm body 12, and the output end of the telescopic oil cylinder 14 is fixedly arranged on the third arm body 13. A hook 131 is arranged at one end of the third arm body 13 for the scraper head 20 to buckle and hang. Correspondingly, a hanging hole 132 is arranged on one side of the scraper head 20 corresponding to the third arm body 13 to buckle and hang with the hook 131. The hook 131 in this embodiment can be a conventional hook for hanging accessories in the art, and the specific shape is not limited here, as long as it can play a buckling effect.

[0039] In the utility model, two groups of jacking mechanisms 2 are provided, and the two groups of jacking mechanisms 2 are symmetrically arranged on the vehicle body 10 with the telescopic arm device 1 as the center. The jacking mechanism 2 includes a support frame 21 fixed on the vehicle body 10, an arch frame 22 with one end hinged to the top of the support frame 21, a connecting frame 23 with one end hinged to the side of the support frame 21 close to the slag scraper head 20, and a jacking cylinder 24 fixedly arranged on the vehicle body 10. The support frame 21 is arranged in the middle of the vehicle body 10, the other end of the arch frame 22 is hinged to the upper part of the first arm body 11, and the other end of the connecting piece is hinged to the lower part of the first arm body 11. The output end of the jacking cylinder 24 is inclined upward toward the direction of the first arm body 11, and the output end of the jacking cylinder 24 is hinged to the bottom of the arch frame 22 close to the first arm body 11.

[0040] The telescopic arm driving structure of the slag truck of the utility model is that the first arm body 11 is hingedly arranged on the vehicle body 10 through the jacking mechanism 2, and a support rod 111 for supporting the second arm body 12 is arranged in the first arm body 11. Therefore, the first arm body 11 only needs to leave a partial structure for the jacking mechanism 2 to be hinged, and the first arm body 11 does not need to be arranged to be the same length as the second arm body 12. Compared with the prior art, part of the structure of the first arm body 11 is omitted, which saves space, reduces the weight of the first arm body 11, and reduces the manufacturing cost; at the same time, the first arm body 11 is The weight reduction can also reduce the load on the rack and pinion drive mechanism and the telescopic cylinder 14, thereby extending the service life; the second arm body 12 adopts rack and pinion transmission, which has a large load-bearing capacity and high stability and precision; the third arm body 13 is driven by a telescopic cylinder, and two telescopic control modes are set, so that the second arm body 12 and the third arm body 13 can perform telescopic actions independently, and the telescopic action of the second arm body 12 does not affect the telescopic action of the third arm body 13, which is convenient for operation; the lifting mechanism 2 can drive the telescopic arm device 1 and the slag scraper head 20 to move up and down, and the overall flexibility is better.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic arm driving structure of a slag scraper, characterized in that: The telescopic arm device comprises a first arm body, the first arm body is liftable and arranged at one end of the vehicle body close to the slag scraper head through a jacking mechanism, the first arm body is hinged to the jacking mechanism, a second arm body is telescopically provided on the first arm body, the second arm body is telescopically extended along its length direction, two ends of the second arm body respectively extend out of the first arm body, a plurality of support rods for supporting the second arm body are rotatably provided at the lower end of the first arm body, the second arm body is arranged on the support rods, the second arm body is telescopically connected to the first arm body through a gear rack driving mechanism, a third arm body is telescopically provided in the second arm body, the third arm body is telescopically extended along its length direction, the third arm body is telescopically connected to the second arm body through a telescopic cylinder, and a first hook for the slag scraper head to buckle and hang is provided at one end of the third arm body away from the vehicle body.

2. The telescopic arm driving structure of a slag scraper according to claim 1, characterized in that: A plurality of guide rods are rotatably arranged at the upper end of the first arm body, and the second arm body is located between the guide rods and the support rods.

3. The telescopic arm driving structure of a slag scraper according to claim 1, characterized in that: The rack and pinion drive mechanism includes racks symmetrically arranged on both sides of the second arm body and a driving gear symmetrically arranged on the inner side of the first arm body. The outer side of the first arm body corresponding to the positions of the two driving gears are respectively provided with driving motors for driving the gears to rotate.

4. The telescopic arm driving structure of a slag scraper according to claim 3, characterized in that: Driven gears are also provided at positions on both sides of the first arm body corresponding to the racks, and the driven gears are rotatably arranged on the first arm body.

5. The telescopic arm driving structure of a slag scraper according to claim 1, characterized in that: One end of the telescopic oil cylinder is fixedly arranged on the second arm body, and the output end of the telescopic oil cylinder is fixedly arranged on the third arm body.

6. The telescopic arm driving structure of a slag scraper according to claim 1, characterized in that: The jacking mechanism is provided with two groups, and the two groups of jacking mechanisms are symmetrically arranged on the vehicle body with the telescopic arm device as the center. The jacking mechanism includes a support frame fixed on the vehicle body, an arch frame with one end hinged to the top of the support frame, a connecting frame with one end hinged to the side of the support frame close to the slag scraper head, and a jacking cylinder fixed on the vehicle body, the other end of the arch frame is hinged to the first arm body, the other end of the connecting frame is hinged to the first arm body, and the output end of the jacking cylinder is hinged to the bottom of the arch frame.

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