Four-shaft balance transmission type cold pilger mill

Abstract

The invention discloses a four-shaft balance transmission type cold pilger mill which comprises a main machine base, an input shaft, a first balance shaft, a crank shaft and a second balance shaft are sequentially installed at the top end of the main machine base, input gears are installed at the two ends of the input shaft, first balance gears are installed at the two ends of the first balance shaft, crank gears are installed at the two ends of the crank shaft, and second balance gears are installed at the two ends of the crank shaft. The two ends of the second balance shaft are provided with second balance gears, the input gear is connected with the first balance gear in a meshed mode, the crank gear is connected with the first balance gear in a meshed mode, and the second balance gears are connected with the crank gear in a meshed mode. The balance gear I and the balance gear II are adopted to realize balance, and during use, the rotation directions of the balance gear I and the balance gear II are opposite to those of a crankshaft gear, and the rotation torque of the gears is opposite to the inertia torque of a rack, so that interaction offset is performed, and higher-speed stable rolling is realized.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling tube mills, and in particular to a four-axis balanced transmission type cold rolling tube mill. Background Art

[0002] In the rolling process of the existing cold rolling mill, the working frame generates inertia force due to the reciprocating motion, and the inertia force is transmitted to the main frame, thereby causing the main frame to vibrate, and then causing the equipment foundation to loosen, affecting the product quality and equipment life.

[0003] In the prior art, the frame is driven by a single crank gear. Since the crank gear can be equipped with a limited balancing weight, although its manufacturing cost is low, the balancing effect is not good. In the prior art, an external sector block structure can also be used to eliminate inertial force, but the width of the external sector block structure occupies a large space, and the driving double connecting rod uses two crank shafts to drive one connecting rod respectively, which requires high manufacturing and installation precision, has a high failure rate, and is not easy to maintain.

[0004] Therefore, how to provide a four-axis balanced transmission cold rolling tube mill to solve the problems existing in the prior art is of great significance to its application. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a four-axis balanced transmission cold rolling tube machine to solve the problem that an external fan-shaped block structure can also be used in the prior art to eliminate the inertial force, but the width of the external fan-shaped block structure occupies a large space, and the driving double connecting rod adopts 2 crank shafts to drive 1 connecting rod respectively, which requires very high manufacturing and installation precision, will have a high failure rate, and is not easy to maintain.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A four-axis balanced transmission cold rolling tube mill comprises a main machine base, an input shaft, a balancing shaft 1, a crank shaft and a balancing shaft 2 are sequentially mounted on the top of the main machine base, input gears are mounted on both ends of the input shaft, balancing gear 1 is mounted on both ends of the balancing shaft 1, crank gears are mounted on both ends of the crank shaft, and balancing gear 2 is mounted on both ends of the balancing shaft 2, wherein the input gear is meshedly connected with the balancing gear 1, the crank gear is meshedly connected with the balancing gear 1, and the balancing gear 2 is meshedly connected with the crank gear.

[0008] Preferably, the input gear, balance gear 1, crank gear and balance gear 2 are all helical gears.

[0009] Preferably, sector-shaped counterweights are installed on the sides of the balance gear one, crank gear and balance gear two, the counterweights of the balance gear one and balance gear two are installed in the same direction, and the counterweight installation method of the balance gear one is opposite to that of the crank gear.

[0010] Preferably, a slide rail is installed at one end of the main frame, a roller frame is installed at the top end of the slide rail, and the roller frame is connected to the crank gear through a connecting rod transmission.

[0011] Preferably, an eccentric hole is opened on the surface of the crank gear, and the connecting rod is rotatably connected to the eccentric hole.

[0012] Preferably, the main machine base is installed with a rack, the roller assembly is installed inside the roller frame, meshing gears are installed on both sides of the roller assembly, and the meshing gears on both sides are meshed and connected with the rack respectively.

[0013] Preferably, the input gear, balance gear 1, crank gear, balance gear 2 and connecting rod are all processed by forging technology, and the input gear, balance gear 1, crank gear and balance gear 2 are quenched.

[0014] Preferably, a transmission pulley is installed at the end of the input shaft, and the transmission pulley is used to be connected to a power source.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses a balancing gear 1 and a balancing gear 2 to achieve balance. When in use, the balancing gear 1 and the balancing gear 2 rotate in opposite directions to the crankshaft gear, and the gear rotation torque is opposite to the inertia torque of the frame, and the interaction and offsetting each other can achieve a higher speed and stable rolling;

[0017] 2. In the present invention, the balance gear 1, balance gear 2 and crankshaft gear are all provided with sector blocks, so as to eliminate greater inertia;

[0018] 3. In the present invention, the balance gear 1, the balance gear 2 and the crankshaft gear adopt a built-in balance block, which occupies a small width and is more conducive to the layout in the width direction of the factory.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0020] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 A top view of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the present invention when it is running;

[0026] Figure 5 It is a front view of the present invention when in operation;

[0027] Figure 6 It is a top view of the present invention when in operation.

[0028] In the figure: 1. main machine base; 2. input shaft; 3. input gear; 4. driving pulley; 5. balance shaft 1; 6. balance gear 1; 7. roller assembly; 8. crank gear; 9. crank shaft; 10. connecting rod; 11. balance shaft 2; 12. balance gear 2; 13. roller frame; 14. rack. DETAILED DESCRIPTION

[0029] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0030] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0032] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0033] See also Figure 1-6 The present invention provides a technical solution of a four-axis balanced transmission cold rolling tube mill: it includes a main machine base 1, the top of the main machine base 1 is sequentially mounted with an input shaft 2, a balancing shaft 1 5, a crank shaft 9 and a balancing shaft 2 11, both ends of the input shaft 2 are mounted with an input gear 3, both ends of the balancing shaft 1 5 are mounted with a balancing gear 1 6, both ends of the crank shaft 9 are mounted with a crank gear 8, and both ends of the balancing shaft 2 11 are mounted with a balancing gear 2 12, wherein the input gear 3 is meshedly connected with the balancing gear 1 6, the crank gear 8 is meshedly connected with the balancing gear 1 6, and the balancing gear 2 12 is meshedly connected with the crank gear 8.

[0034] The input gear 3, the balance gear 1 6, the crank gear 8 and the balance gear 2 12 are all helical gears.

[0035] Fan-shaped counterweights are installed on the sides of the balance gear 1 6, crank gear 8 and balance gear 2 12. The installation directions of the counterweights of the balance gear 1 6 and the balance gear 2 12 are consistent. The installation method of the counterweight of the balance gear 6 is opposite to that of the crank gear 8. The counterweight is installed in an internal manner. The width occupied by the counterweight is equal to the width of the balance gear 1 6, crank gear 8 and balance gear 2 12. The width occupies little space, which is more conducive to the layout of the width direction of the factory.

[0036] A slide rail is installed at one end of the main frame 1 , a roller frame 13 is installed at the top end of the slide rail, and the roller frame 13 is connected to the crank gear 8 through a connecting rod 10 .

[0037] An eccentric hole is provided on the surface of the crank gear 8, and the connecting rod 10 is rotatably connected to the eccentric hole. The position of the eccentric hole is consistent with the balance block on the crank gear 8. When the roller frame 13 is driven forward by the connecting rod 10, the balance blocks on the two balance gears move backward. When the connecting rod 10 drives the roller frame 13 to move backward, the balance blocks on the two balance gears move forward, thereby achieving balance.

[0038] The main frame 1 is provided with a rack 14 , the roller assembly 7 is provided inside the roller frame 13 , meshing gears are provided on both sides of the roller assembly 7 , and the meshing gears on both sides are meshed and connected with the rack 14 .

[0039] The input gear 3, the balance gear 1 6, the crank gear 8, the balance gear 2 12 and the connecting rod 10 are all processed by forging technology, the input gear 3, the balance gear 1 6, the crank gear 8, the balance gear 2 12 are quenched, and the input gear 3, the balance gear 1 6, the crank gear 8, the balance gear 2 12 are all ground, so that the gears have better fit, thereby achieving high strength and low noise.

[0040] A driving pulley 4 is installed at the end of the input shaft 2, and the driving pulley 4 is used to connect with a power source.

[0041] During specific use, the external power source is transmitted through the belt and the transmission pulley 4, the transmission pulley 4 drives the input gear 3 to rotate through the input shaft 2, the input gear 3 drives the balance gear 1 6 to rotate, the balance gear 1 6 drives the crank gear 8 to rotate, the crank gear 8 drives the balance gear 2 12 to rotate, the crank gear 8 drives the roller frame 13 to reciprocate through the connecting rod 10 to achieve pipe rolling, the balance gear 1 6 and the balance gear 2 12 rotate in opposite directions to the crank gear 8, the gear rotation torque is opposite to the inertia torque of the frame, and they interact and offset each other to achieve smooth rolling at a higher speed.

[0042] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A four-axis balanced transmission cold rolling mill, characterized in that: The invention comprises a main engine base (1), wherein an input shaft (2), a balancing shaft 1 (5), a crankshaft (9) and a balancing shaft 2 (11) are sequentially mounted on the top of the main engine base (1), input gears (3) are mounted on both ends of the input shaft (2), balancing gear 1 (6) are mounted on both ends of the balancing shaft 1 (5), crank gears (8) are mounted on both ends of the crankshaft (9), and balancing gear 2 (12) are mounted on both ends of the balancing shaft 2 (11), wherein the input gear (3) is meshingly connected with the balancing gear 1 (6), the crank gear (8) is meshingly connected with the balancing gear 1 (6), and the balancing gear 2 (12) is meshingly connected with the crank gear (8).

2. A four-axis balanced transmission cold rolling mill according to claim 1, characterized in that: The input gear (3), the balance gear one (6), the crank gear (8) and the balance gear two (12) are all helical gears.

3. A four-axis balanced transmission cold rolling mill as claimed in claim 2, characterized in that: The sides of the balance gear 1 (6), the crank gear (8) and the balance gear 2 (12) are all installed with fan-shaped counterweight blocks. The installation directions of the counterweight blocks of the balance gear 1 (6) and the balance gear 2 (12) are consistent, and the installation method of the counterweight block of the balance gear 1 (6) is opposite to that of the crank gear (8).

4. A four-axis balanced transmission cold rolling mill as claimed in claim 3, characterized in that: A slide rail is installed at one end of the main frame (1), a roller frame (13) is installed at the top end of the slide rail, and the roller frame (13) is connected to the crank gear (8) through a connecting rod (10).

5. A four-axis balanced transmission cold rolling mill as claimed in claim 4, characterized in that: An eccentric hole is provided on the surface of the crank gear (8), and the connecting rod (10) is rotatably connected to the eccentric hole.

6. A four-axis balanced transmission cold rolling mill as claimed in claim 5, characterized in that: The main machine base (1) is equipped with a rack (14), a roller assembly (7) is installed inside the roller frame (13), meshing gears are installed on both sides of the roller assembly (7), and the meshing gears on both sides are meshed and connected with the rack (14) respectively.

7. A four-axis balanced transmission cold rolling mill as claimed in claim 6, characterized in that: The input gear (3), the balance gear 1 (6), the crank gear (8), the balance gear 2 (12) and the connecting rod (10) are all processed by forging technology, and the input gear (3), the balance gear 1 (6), the crank gear (8) and the balance gear 2 (12) are quenched.

8. A four-axis balanced transmission cold rolling mill as claimed in claim 7, characterized in that: A transmission pulley (4) is installed at the end of the input shaft (2), and the transmission pulley (4) is used to be connected to a power source.

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