CN113061711A

CN113061711A - Special transferring and taking device for heat treatment of large annular workpiece

Info

Publication number: CN113061711A
Application number: CN202110292343.XA
Authority: CN
Inventors: 董晓华
Original assignee: Chengdu Newo International Trade Co ltd
Current assignee: Chengdu Newo International Trade Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-07-02

Abstract

The invention belongs to the technical field of heat treatment equipment, and provides a special transferring and taking device for heat treatment of a large-scale annular workpiece. The method comprises the following steps: the device comprises a mounting seat, a driving mechanism and a grabbing mechanism; the mounting seat comprises a base box and a square box driving mechanism which is arranged in the mounting seat, the driving mechanism comprises a main motor, a screw rod assembly and a bevel gear set, the main motor is fixedly arranged in the square box, the screw rod assembly is arranged in the base box, the bevel gear set is in driving connection with the main motor, and the main motor is in driving connection with the screw rod assembly through the bevel gear set; the grabbing mechanism is arranged in the mounting seat, and in sum, the special transferring and picking device for the heat treatment of the large-sized annular workpiece can be suitable for replacing the traditional manual operation mode. But also reduces the overall cost and increases the working efficiency of the process of heating, quenching, tempering and other heat treatments of the large-scale annular workpiece by using a pit furnace; and the adopted automatic operation reduces the safety accidents of personnel.

Description

Special transferring and taking device for heat treatment of large annular workpiece

Technical Field

The invention relates to the technical field of heat treatment equipment, in particular to a special transferring and taking device for heat treatment of a large-scale annular workpiece.

Background

The large-scale circular ring-shaped workpiece is heated, quenched, tempered and the like mostly by using a row of pit furnaces during heat treatment, and the whole process is completed by using old equipment and matching a travelling crane with a rod-shaped object and a bottom layer material tray through visual inspection by a professional. In this process, firstly, the cost of replacing the tray is high. In order to smoothly finish the transfer of the annular workpiece in the heat treatment process, the bottom of the annular workpiece needs to be matched with a material tray, the material tray needs high strength, good heat resistance and simple structure, and is difficult to deform after repeated heating quenching, so that the annular workpiece needs to be made of heat-resistant stainless steel or hot-work die steel, the cost of a single material tray is about 15-20 ten thousand yuan, the welding part is extremely easy to crack and has integral deformation after repeated rapid heating and rapid cooling due to large load stress, and a batch of annular workpieces needs to be replaced after about 6 months. Secondly, the labor cost is high. The whole heat treatment process needs at least three workers to cooperate with each other, wherein a professional driver is required, the working strength is high, the high-temperature operation is realized, and the conditions are hard. Thirdly, the power consumption is large. The material tray can effectively support the annular workpiece in a red hot state only when the material tray reaches a certain strength, so that the volume of the material tray reaches or exceeds the weight of the workpiece, namely about 50 percent of the electricity consumption of the heating furnace is spent on idle work, the material tray is repeatedly and inefficiently heated, and if the power of the heating furnace is 900KW, about ten thousand degrees of electric energy is wasted every day. When the material is taken, an operator needs to visually observe the hoisting direction of the workpiece, then the trial positioning material tray bottom hole of the travelling crane is operated, the central point of the well-type furnace needs to be estimated after the workpiece is lifted off, and the travelling crane needs to be operated to repeatedly position the central point. The process is repeated when the product is discharged. Therefore, the working efficiency is low, manual operation and control are needed in the whole process, visual positioning is inaccurate, workpieces are easy to be scraped on the furnace wall when being discharged, high-voltage line short circuit is caused, equipment damage and casualties occur. Therefore, there is a need for a heat treatment apparatus for large-sized ring-shaped workpieces that can replace manual work.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a special transferring and taking device for heat treatment of a large-scale annular workpiece, so as to replace the traditional manual operation mode.

The invention provides a special transferring and picking device for heat treatment of a large-scale annular workpiece, which comprises: a mounting seat; the mounting seat comprises a base box and a square box, the square box is fixedly mounted on the base box, and the base box is fixedly connected with the square box; the driving mechanism is installed in the installation seat and comprises a main motor, a screw rod assembly and a bevel gear set, the main motor is fixedly installed in the square box, the screw rod assembly is installed in the basic box, the bevel gear set is in driving connection with the main motor, and the main motor is in driving connection with the screw rod assembly through the bevel gear set; and a gripping mechanism; the grabbing mechanism is arranged in the mounting seat, is positioned at the bottom of the foundation box and extends to the bottom of the foundation box, and is connected with the mounting seat in a sliding manner; the grabbing mechanism comprises a grabbing hook and a lifting hook bracket; the lifting hook bracket is arranged on the screw rod assembly, and the grapple is fixedly arranged below the lifting hook bracket; the lifting hook support is in transmission connection with the screw rod assembly, and the lifting hook support is fixedly connected with the screw rod assembly.

Furthermore, the square box is also provided with a connecting piece, the connecting piece is positioned at the top of the surface of the square box, and the connecting piece is fixedly connected with an external travelling crane. In practical application, the whole device is fixedly connected with the travelling crane through the connecting piece, so that the travelling crane can be used for realizing lifting.

Furthermore, it has and is no less than three to snatch the mechanism, and the equipartition respectively sets up on the basic case. In practice, five grabbing mechanisms are adopted to realize the most stable structure, so that grabbing of large annular workpieces is realized, shaking in the workpiece transfer process is avoided, and meanwhile, the grabbing mechanisms adopt automatic design and manual operation is avoided.

Furthermore, the basic box still includes davit and stopper, the davit cross-section is the I shape, the stopper is installed on the davit, and be located the davit end, keep away from main motor direction. In practical application, the load-bearing shaft of the suspension arm is forged by 20CrMuTi, machining precision is +/-0.03 mm, roughness is Ra0.6, nondestructive flaw detection is carried out piece by piece after manufacturing and machining, and the flaw detection rating reaches the JLZYZ2482-36 first-level standard. And then the product is qualified and can be used.

Further, the lifting hook support comprises a sliding frame and a pulley, more than one position of the pulley is rotatably arranged on the sliding frame and is positioned on the two inner side surfaces of the sliding frame and opposite to the sliding frame, the sliding frame is slidably arranged on the suspension arm through the pulley, and the grabbing hook is fixedly arranged below the sliding frame. In practical application, the pulleys are provided with 8 positions in a group of lifting hook supports, are uniformly distributed up and down and are abutted against the upper surface and the lower surface of the suspension arm.

Furthermore, the screw rod assembly comprises a screw rod nut and a transmission screw rod, the screw rod nut is fixedly installed in the sliding frame, the transmission screw rod is rotatably installed in the basic box and located on the suspension arm, and the screw rod nut is in transmission connection with the transmission screw rod. In practical application, the transmission screw rod is a trapezoidal screw rod and is made of GCr15 ZQSn10 materials, so that the strength is ensured. Is more suitable for being used at high temperature.

According to the technical scheme, the special transferring and taking device for the heat treatment of the large-scale annular workpiece has the beneficial effects that:

(1) in practical application, the adopted grabbing mechanism grabs the large-scale annular workpiece, so that the manpower is saved, and especially in the heat treatment process, the equipment and personnel loss caused by manual operation is avoided.

(2) Adopt actuating mechanism drive to snatch the mechanism and carry out work simultaneously, actuating mechanism includes main motor, lead screw subassembly and bevel gear group, and this transmission mode is stable and can guarantee multidirectional transmission.

And adopt the combination mounting means of basic case and square chest, on the one hand facilitate the installation main motor, on the other hand make actuating mechanism and snatch the mechanism installation also convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention, reference will now be made briefly to the embodiments or to the accompanying drawings that are needed in the description of the prior art. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention

FIG. 3 is an enlarged view of a portion a shown in FIG. 1;

FIG. 4 is an enlarged view of the point b shown in FIG. 1;

reference numerals: the device comprises a mounting seat 1, a base box 11, a suspension arm 111, a limiting block 112, a square box 12, a connecting piece 121, a driving mechanism 2, a main motor 21, a screw rod assembly 22, a transmission screw rod 221, a screw rod nut 222, a bevel gear set 23, a grabbing mechanism 3, a grabbing hook 31, a lifting hook support 32, a sliding frame 321, a pulley 322, a transmission control system 4 and a low-elasticity mechanical winding drum 5.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

The embodiment is basically as shown in the attached figures 1 to 4:

example 1:

as shown in fig. 1 to 4, the present embodiment provides a special transferring and picking device for heat treatment of large-sized annular workpieces, so as to replace the conventional manual operation manner. The method comprises the following steps: the device comprises a mounting seat 1, a driving mechanism 2 and a grabbing mechanism 3; the mounting seat 1 comprises a base box 11 and a square box 12, wherein the square box 12 is fixedly mounted on the base box 11, and the base box 11 is fixedly connected with the square box 12; the driving mechanism 2 is arranged in the mounting seat 1, the driving mechanism 2 comprises a main motor 21, a screw rod assembly 22 and a bevel gear set 23, the main motor 21 is fixedly arranged in the square box 12, the screw rod assembly 22 is arranged in the basic box 11, the bevel gear set 23 is in driving connection with the main motor 21, and the main motor 21 is in driving connection with the screw rod assembly 22 through the bevel gear set 23; the grabbing mechanism 3 is arranged in the mounting seat 1, is positioned at the bottom of the base box 11 and extends to the bottom of the base box 11, and the grabbing mechanism 3 is connected with the mounting seat 1 in a sliding mode; the gripping mechanism 3 comprises a gripping hook 31 and a hook bracket 32; the hook bracket 32 is arranged on the screw rod assembly 22, and the grapple 31 is fixedly arranged below the hook bracket 32; the hook bracket 32 is in transmission connection with the screw rod assembly 22, and the hook bracket 32 is fixedly connected with the screw rod assembly 22. In practical application, the adopted grabbing mechanism 3 grabs the large-scale annular workpiece, so that the manpower is saved, and especially in the heat treatment process, the equipment and personnel loss caused by manual operation is avoided. Meanwhile, the driving mechanism 2 is adopted to drive the grabbing mechanism 3 to work, the driving mechanism 2 comprises a main motor 21, a screw rod assembly 22 and a bevel gear set 23, and the transmission mode is stable and can ensure multidirectional transmission. And adopt the combination mounting means of basic case 11 and square chest 12, on the one hand facilitate the installation of main motor 21, on the other hand make actuating mechanism 2 and snatch the mechanism 3 and install also conveniently. Furthermore, in order to facilitate control, the device further comprises a transmission control system 4 for controlling transmission operation of the device, wherein the transmission control system 4 specifically adopts a Siemens PLC controller and an ABB frequency converter, adopts a mode of combining motor vector control and current control to ensure that the external tension of the lifting hook is overlarge and prevent the blocking phenomenon, and can adjust the operation speed of the main lifting hook. The clamping back-off time of the motor is less than or equal to 2S, the single-hook clamping torque is less than or equal to 40N/M, and the alarm current of the frequency converter is less than or equal to 150% of the rated current of the motor. Meanwhile, the travel switch is provided with heat insulation protection at the main motor 21 and the release position, and the normal heat dissipation of the motor is ensured. All travel switches adopt ohm dragon products with the temperature of 120 ℃ and above.

And the electric wire used for electrically connecting with the main motor 21 is a customized high temperature resistant cable, a low elasticity mechanical reel 5 is adopted for connecting the cable with the power supply, a steel rope is added in the main cable to prevent the cable from being broken, and a running mechanism is prevented from being hooked with the cable.

In this embodiment, the square box 12 further has a connecting member 121, the connecting member 121 is located on the top of the surface of the square box 12, and the connecting member 121 is fixedly connected to the external trolley. In practical application, the whole device is fixedly connected with the travelling crane through the connecting piece 121, so that the travelling crane can be used for realizing lifting. The connecting element 121 is in fact a flange and is thickened. This maintains a stable connection of the device to the workpiece.

In this embodiment, the grabbing mechanism 3 has at least three positions, and is respectively and uniformly distributed on the basic box 11. In practice, five grabbing mechanisms 3 are adopted to realize the most stable structure, so that grabbing of large annular workpieces is realized, shaking in the workpiece transfer process is avoided, and meanwhile, the grabbing mechanisms 3 adopt automatic design, and manual operation is avoided.

In this embodiment, the base box 11 further includes a suspension arm 111 and a limiting block 112, the suspension arm 111 has an i-shaped cross section, and the limiting block 112 is mounted on the suspension arm 111 and located at the end of the suspension arm 111 away from the main motor 21. In practical application, the load bearing shaft of the suspension arm 111 is forged by 20CrMuTi, machining precision is +/-0.03 mm, roughness is Ra0.6, nondestructive flaw detection is carried out piece by piece after manufacturing and machining, and the flaw detection rating reaches the first-grade standard JLZYZ 2482-36. And then the product is qualified and can be used.

In the embodiment, the hook support 32 comprises a carriage 321 and a pulley 322, the pulley 322 is rotatably mounted on the carriage 321 at more than one position and is located at two inner side surfaces of the carriage 321, and oppositely, the carriage 321 is slidably mounted on the suspension arm 111 through the pulley 322, and the grapple 31 is fixedly mounted under the carriage 321. In practical application, the pulley 322 has 8 positions in a group of hook brackets 32, and is uniformly arranged up and down and abutted against the upper and lower surfaces of the suspension arm 111.

In the present embodiment, the lead screw assembly 22 includes a lead screw nut 222 and a transmission lead screw 221, the lead screw nut 222 is fixedly installed in the carriage 321, the transmission lead screw 221 is rotatably installed in the base box 11 and located on the suspension arm 111, and the lead screw nut 222 is in transmission connection with the transmission lead screw 221. In practical application, the transmission screw rod 221 is a trapezoidal screw rod and is made of GCr15 ZQSn10 material, so that the strength is ensured. Is more suitable for being used at high temperature.

To sum up, this special transportation and get a device that large-scale cyclic annular work piece thermal treatment used not only can be suitable for replacing traditional manual work mode. But also reduces the overall cost and increases the working efficiency of the process of heating, quenching, tempering and other heat treatments of the large-scale annular workpiece by using a pit furnace; and the adopted automatic operation reduces the safety accidents of personnel.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a special use of large-scale cyclic annular work piece thermal treatment uses is transported and is got a device which characterized in that includes:

a mounting seat; the mounting seat comprises a base box and a square box, the square box is fixedly mounted on the base box, and the base box is fixedly connected with the square box;

the driving mechanism is installed in the installation seat and comprises a main motor, a screw rod assembly and a bevel gear set, the main motor is fixedly installed in the square box, the screw rod assembly is installed in the basic box, the bevel gear set is in driving connection with the main motor, and the main motor is in driving connection with the screw rod assembly through the bevel gear set; and

a grabbing mechanism; the grabbing mechanism is arranged in the mounting seat, is positioned at the bottom of the foundation box and extends to the bottom of the foundation box, and is connected with the mounting seat in a sliding manner; the grabbing mechanism comprises a grabbing hook and a lifting hook bracket; the lifting hook bracket is arranged on the screw rod assembly, and the grapple is fixedly arranged below the lifting hook bracket; the lifting hook support is in transmission connection with the screw rod assembly, and the lifting hook support is fixedly connected with the screw rod assembly.

2. The special transferring and picking device for heat treatment of large-sized annular workpieces as claimed in claim 1, wherein the square box further comprises a connecting member, the connecting member is located on the top of the surface of the square box, and the connecting member is fixedly connected with an external travelling crane.

3. The special transferring and picking device for heat treatment of large-sized annular workpieces as claimed in claim 1, wherein the grabbing mechanism has at least three positions, and the three positions are uniformly distributed on the base box.

4. The special transporting and picking device for heat treatment of large-scale annular workpieces as claimed in claim 3, wherein the base box further comprises a suspension arm with an I-shaped cross section and a limiting block mounted on the suspension arm and located at the tail end of the suspension arm far from the main motor.

5. The special transfer and pick-up device for heat treatment of large annular workpieces as claimed in claim 4, wherein the hook support comprises a carriage and a pulley, the pulley is mounted on the carriage in more than one position, and is located on two inner sides of the carriage, and is opposite to the pulley, the carriage is slidably mounted on the boom through the pulley, and the grapple is fixedly mounted under the carriage.

6. The special transferring and picking device for heat treatment of large annular workpieces as claimed in claim 5, wherein the lead screw assembly comprises a lead screw nut and a transmission lead screw, the lead screw nut is fixedly installed in the carriage, the transmission lead screw is rotatably installed in the base box and located on the suspension arm, and the lead screw nut is in transmission connection with the transmission lead screw.