Mechanical limiting device for telescopic arm of iron mixing car capping robot

Abstract

According to the mechanical limiting device for the telescopic arm of the iron mixing car capping robot, through spiral transmission among a lead screw, a screw rod, a driving gear, an intermediate gear and a driven gear, a nut on the screw rod is driven to do linear motion on the screw rod, and then a limiting block on the nut can do synchronous motion along with the telescopic arm. When the telescopic arm moves to a designated position, the limiting block can trigger the mechanical limiting combination switch in time. The mechanical limiting device can still keep an effective limiting function in a high-temperature or low-temperature environment, the equipment failure rate can be greatly reduced, then the equipment maintenance cost is reduced, the economic benefit is improved, meanwhile, the labor intensity of workers is relieved, and the universality of the device is improved.

Description

Technical Field

[0001] The invention belongs to the field of iron and steel metallurgy and production automation, and more specifically, relates to a mechanical limiting device for a telescopic arm of a capping robot for a mixing iron car. Background Art

[0002] The low-carbon and environmental protection policies currently implemented have put forward higher requirements for all aspects of steel enterprises. In the process of transporting molten iron, the iron car generates a lot of smoke and dust because it is open for transportation. The smoke and dust cause serious pollution to the environment and endanger people's health. Open transportation will also cause the temperature of high-temperature molten iron to drop, resulting in immeasurable losses in energy. When the heat loss of molten iron reaches 150-180 degrees, it will seriously affect normal production operations, reduce production efficiency, increase economic costs and waste human resources. In recent years, most large steel mills in China have used mixed iron cars to transport molten iron. Because the mixed iron car carries high-temperature molten iron, there will be a defect of slagging at the furnace mouth. In addition, there are safety hazards such as tipping. Because the working conditions of the mixed iron car are more restricted, although some companies have tried to cover it, they have all failed. Therefore, users are cautious and wait-and-see about the use of the mixed iron car cover, and the general acceptance is not high.

[0003] In response to the above user pain points and actual conditions, Baowu Heavy Industry Co., Ltd. actively carried out technical research and development and successfully developed a hybrid car capping robot. This type of equipment can effectively reduce the emission of dust and smoke in the tank of the hybrid car, reduce the temperature loss of molten iron, reduce the cost of steelmaking, and realize automatic capping and uncapping functions. However, the electronic limit has a high failure rate in high and low temperature environments, resulting in its low versatility. Summary of the invention

[0004] The present invention provides a mechanical limit device for the telescopic arm of a capping robot for a mixed-rail vehicle to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0005] A mechanical limit device for the telescopic arm of a hybrid rail car capping robot comprises: a motor and a screw threaded through the inside of the telescopic arm; the output end of the motor is matched and connected with one end of a coupling; the other end of the coupling is matched and connected with the screw; a support seat and a nut seat are arranged on the screw; a driving gear is connected with a key between the coupling and the support seat; a first bearing seat is fixed to the fixed arm outside the telescopic arm by bolts; a rotating shaft is installed through the first bearing seat; intermediate gears are respectively sleeved on both ends of the rotating shaft; the intermediate gear arranged at one end of the rotating shaft extending into the fixed arm is connected with the driving gear The gears are meshingly connected; the fixed arm is provided with a second bearing seat and a third bearing seat; the second bearing seat and the third bearing seat are rotatably supported by a screw; the end of the screw is keyed to a driven gear; an intermediate gear is provided at one end of the rotating shaft extending out of the fixed arm and meshes with the driven gear; a mechanical limit combination switch and a limit block for triggering the mechanical limit combination switch are relatively arranged on the part of the screw between the second bearing seat and the third bearing seat; a nut is also threadedly sleeved on the screw between the second bearing seat and the third bearing seat; the limit block is slidably connected to a slide rail provided on the screw and fixed to the nut.

[0006] As a preferred technical solution of the present invention, the support seat is fixed to the inner side of the fixed arm and rotatably supports the screw rod; the nut seat is fixed to the end of the telescopic arm, and the threaded sleeve is arranged on the outer periphery of the screw rod; the telescopic arm is slidably connected to the inner side of the fixed arm.

[0007] As a preferred technical solution of the present invention, the nut performs linear motion on the screw rod.

[0008] As a preferred technical solution of the present invention, the rotation speed of the driving gear is the same as that of the lead screw.

[0009] As a preferred technical solution of the present invention, the driving gear and the intermediate gear provided at one end of the rotating shaft extending into the fixed arm are bevel gear meshing.

[0010] As a preferred technical solution of the present invention, the driven gear and the intermediate gear provided at one end of the rotating shaft extending out of the fixed arm are bevel gears meshing.

[0011] As a preferred technical solution of the present invention, the thread ratio of the lead screw and the screw is 6:1.

[0012] As a preferred technical solution of the present invention, the module ratio of the driving gear and the intermediate gear is 2:1.

[0013] As a preferred technical solution of the present invention, the module ratio of the driven gear and the intermediate gear is 2:1.

[0014] As a preferred technical solution of the present invention, the limit block and the nut are fixedly connected by bolts.

[0015] The benefit of the present invention lies in that it provides a mechanical limit device for the telescopic arm of a hybrid car capping robot, which drives the nut on the screw to perform linear motion on the screw through the spiral transmission between the lead screw, the screw, the driving gear, the intermediate gear and the driven gear, so that the limit block on the nut can move synchronously with the telescopic arm. When the telescopic arm moves to the specified position, the limit block can trigger the mechanical limit combination switch in time. Such a mechanical limit device can still maintain an effective limit function in high or low temperature environments, which can greatly reduce the equipment failure rate, thereby reducing the equipment maintenance cost, improving economic benefits while reducing the labor intensity of the staff and improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a front view of a mechanical limiting device of the telescopic arm of a hybrid car covering robot involved in the present application.

[0018] A mechanical limit device 10 of a telescopic arm of a hybrid car capping robot, a motor 11, a telescopic arm 12, a fixed arm 13, a screw 14, a coupling 15, a support seat 16, a nut seat 17, a driving gear 18, a first bearing seat 19, a rotating shaft 20, an intermediate gear 21, a driven gear 22, a screw 23, a second bearing seat 24, a third bearing seat 25, a mechanical limit combination switch 26, a limit block (not shown), a nut 27, a slide rail 28, and a bolt (not shown). DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] like Figure 1 As shown, a mechanical limit device 10 of the telescopic arm 12 of the hybrid vehicle capping robot of the present application comprises: a motor 11 and a screw rod 14 threadedly passing through the interior of the telescopic arm 12. The screw rod 14 is used to drive the telescopic arm 12 to move. The output end of the motor 11 is matched and connected with one end of the coupling 15. The other end of the coupling 15 is matched and connected with the screw rod 14. A support seat 16 and a nut 27 seat 17 are provided on the screw rod 14. A driving gear 18 is connected by a key between the coupling 15 and the support seat 16. A first bearing seat 19 is fixed to the fixed arm 13 outside the telescopic arm 12 by bolts. A rotating shaft 20 is installed through the first bearing seat 19. Intermediate gears 21 are respectively sleeved on both ends of the rotating shaft 20. The intermediate gear 21 provided at one end of the rotating shaft 20 extending into the fixed arm 13 is meshed and connected with the driving gear 18. The fixed arm 13 is provided with a second bearing seat 24 and a third bearing seat 25. The second bearing seat 24 and the third bearing seat 25 are rotatably supported by the screw rod 23. The end of the screw rod 23 is keyed to a driven gear 22. An intermediate gear 21 provided at one end of the rotating shaft 20 extending from the fixed arm 13 is meshed with the driven gear 22. A mechanical limit combination switch 26 and a limit block for triggering the mechanical limit combination switch 26 are relatively provided at the portion of the screw rod 23 between the second bearing seat 24 and the third bearing seat 25. A nut 27 is also threadedly sleeved on the screw rod 23 between the second bearing seat 24 and the third bearing seat 25. The limit block is slidably connected to a slide rail 28 provided on the screw rod 23 and fixed to the nut 27.

[0023] As a further solution, the support seat 16 is fixed to the inner side of the fixed arm 13 and rotatably supports the screw rod 14. The nut 27 seat 17 is fixed to the end of the telescopic arm 12 and is threadedly sleeved on the outer periphery of the screw rod 14 and supports the screw rod 14. The telescopic arm 12 is slidably connected to the inner side of the fixed arm 13. The telescopic arm 12 slides along the inner side of the fixed arm 13.

[0024] As a further solution, the nut 27 performs linear motion on the screw rod 23 , thereby driving the limit block to perform linear motion between the mechanical limit combination switches 26 , thereby triggering the mechanical limit combination switches 26 .

[0025] As a further solution, the driving gear 18 has the same rotation speed as the screw rod 14. The driving gear 18 drives the intermediate gear 21 meshed with it to rotate, and the intermediate gear 21 drives the rotating shaft 20 to rotate, thereby driving the intermediate gear 21 at the other end of the rotating shaft 20 to rotate together. The intermediate gear 21 drives the driven gear 22 meshed with it to rotate, and the driven gear 22 drives the screw rod 23 to rotate, thereby driving the nut 27 on the screw rod 23 to make a linear motion, so that the limit block on the nut 27 triggers the mechanical limit combination switch 26.

[0026] As a further solution, the driving gear 18 and the intermediate gear 21 provided at one end of the rotating shaft 20 extending into the fixed arm 13 are meshed as bevel gears. The driven gear 22 and the intermediate gear 21 provided at one end of the rotating shaft 20 extending out of the fixed arm 13 are meshed as bevel gears. The bevel gear can change the transmission direction of the screw rod 14.

[0027] As a further solution, the thread ratio of the screw rod 14 to the screw rod 23 is 6: 1. This can increase the rotation speed of the screw rod 23 and thus increase the movement speed of the nut 27.

[0028] As a further solution, the module ratio of the driving gear 18 to the intermediate gear 21 is 2:1. One rotation of the driving gear 18 drives the intermediate gear 21 to rotate twice. The module ratio of the driven gear 22 to the intermediate gear 21 is 2:1. Two rotations of the intermediate gear 21 drive the driven gear 22 to rotate once. In this way, the limit block moves synchronously with the telescopic arm 12, and when the telescopic arm 12 moves to a specified position, the limit block can trigger the mechanical limit combination switch 26.

[0029] As a further solution, the limit block and the nut 27 are fixedly connected by bolts, and the nut 27 drives the limit block to perform linear motion together.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A mechanical limit device for the telescopic arm of a capping robot for a mixed-rail vehicle, characterized in that: include: The motor and the lead screw that threads through the inside of the telescopic arm; The output end of the motor is cooperatively connected with one end of the coupling; The other end of the coupling is cooperatively connected with the screw rod; The screw rod is provided with a support seat and a nut seat; A driving gear is partially key-connected between the coupling and the support seat; A first bearing seat is fixed to the fixed arm outside the telescopic arm by bolts; A rotating shaft is installed through the first bearing seat; Intermediate gears are respectively sleeved on both ends of the rotating shaft; The intermediate gear provided at one end of the rotating shaft extending into the fixed arm is meshed and connected with the driving gear; The fixed arm is provided with a second bearing seat and a third bearing seat; The second bearing seat and the third bearing seat are rotatably supported by screws; The end of the screw is key-connected with a driven gear; The intermediate gear provided at one end of the rotating shaft extending out of the fixed arm is meshed with the driven gear; A mechanical limit combination switch and a limit block for triggering the mechanical limit combination switch are relatively arranged on the portion of the screw between the second bearing seat and the third bearing seat; The screw rod is also threadedly sleeved with a nut between the second bearing seat and the third bearing seat; The limiting block is slidably connected to a slide rail provided on the screw rod and is fixed to the nut.

2. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The support seat is fixed to the inner side of the fixed arm and rotatably supports the screw rod; The nut seat is fixed to the end of the telescopic arm, and the thread sleeve is arranged on the outer periphery of the screw rod; The telescopic arm is slidably connected to the inner side of the fixed arm.

3. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The nut performs linear motion on the screw rod.

4. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The driving gear and the screw rod have the same rotation speed.

5. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The driving gear and the intermediate gear provided at one end of the rotating shaft extending into the fixed arm are bevel gear meshing.

6. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The driven gear and the intermediate gear provided at one end of the rotating shaft extending out of the fixed arm are bevel gear meshing.

7. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The thread ratio of the lead screw to the screw is 6:

1.

8. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The module ratio of the driving gear and the intermediate gear is 2:

1.

9. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The module ratio of the driven gear and the intermediate gear is 2:

1.

10. The mechanical limit device for the telescopic arm of the capping robot for a mixed-rail vehicle according to claim 1, characterized in that: The limiting block and the nut are fixedly connected by bolts.

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