Limiting device of hydraulic shear and bar shearing assembly

Abstract

The utility model discloses a limiting device of a hydraulic shear and a bar shearing assembly. The limiting device comprises a shell, a limiting block and a limiting block, the limiting assembly comprises a trigger part and a switch part, the switch part is arranged in the shell, the trigger part is rotatably arranged on the shell so as to selectively make contact with the switch part, the switch part is electrically connected with the hydraulic shear, and when the hydraulic shear returns, the trigger part rotates and makes contact with the switch part so that the hydraulic shear can return. By arranging the trigger piece and the switch piece, the switch piece sends out a signal to ensure that the hydraulic shear returns to the same position every time, the shearing length is more accurate, the yield and the fixed weight rate are improved, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of bar manufacturing technology, and in particular to a hydraulic shear limiting device and a bar shearing assembly. Background Technology

[0002] In the continuous casting process, hydraulic shears are used to cut the billets according to length or weight during the casting of molten steel billets in the crystallizer. The hydraulic shears are driven by hydraulic cylinders, and the cutting process is driven by hydraulic force.

[0003] However, because the hydraulic shear does not return to its original position accurately after cutting the blank, the length of the blank is uneven each time it is cut, resulting in a low fixed weight rate. This leads to a low yield in the next process, a decrease in the yield of finished products, and an increase in costs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a limiting device for a hydraulic shear. By setting a trigger and a switch, it ensures that the hydraulic shear returns to the same position each time, making the cutting length more accurate, thereby improving the yield and weight ratio, and saving costs.

[0005] This utility model also proposes a bar shearing assembly.

[0006] A limiting device for a hydraulic shear according to a first aspect of the present invention includes: a housing; a limiting assembly, the limiting assembly including: a trigger and a switch, the switch being disposed within the housing, the trigger being rotatably disposed on the housing for selective contact with the switch, the switch being electrically connected to the hydraulic shear, and the hydraulic shear causing the trigger to rotate and contact the switch when returning to its original position, thereby causing the hydraulic shear to return to its original position.

[0007] The limiting device of the hydraulic shear according to the embodiment of this utility model, by setting a trigger and a switch, the switch sends a signal to ensure that the hydraulic shear returns to the same position each time, making the cutting length more accurate, thereby improving the yield and fixed weight rate and saving costs.

[0008] According to some embodiments of the present invention, the trigger includes a rotating rod and a paddle, the rotating rod and the paddle are fixedly connected, the rotating rod is disposed on the outside of the housing, the paddle is disposed inside the housing and selectively contacts the switch, and the hydraulic shear drives the rotating rod to rotate when returning to its original position.

[0009] According to some embodiments of the present invention, the rotating rod includes a limiting part and a rotating part, the limiting part and the rotating part are connected to each other, the hydraulic shear drives the rotating part to rotate when returning to its original position, and the limiting part and the outer shell selectively limit each other.

[0010] According to some embodiments of the present invention, the limiting device of the hydraulic shear further includes: a limiting member, the limiting member being fixed to the outside of the housing, and the limiting part and the limiting member selectively limiting each other.

[0011] According to some embodiments of the present invention, the limiting component further includes: a rotating shaft, with both ends of the rotating shaft passing through the outer shell, one end of the rotating shaft being fixedly connected to the rotating rod, and the paddle being fixed on the rotating shaft.

[0012] According to some embodiments of the present invention, the limiting component further includes: a fixing member, the fixing member being disposed inside the housing, the fixing member having a slot, and the switching member being fixed on the slot.

[0013] According to some embodiments of the present invention, the outer shell includes: a first shell and a second shell, wherein the first shell is disposed inside the second shell, and a heat dissipation channel is provided between the first shell and the second shell.

[0014] According to some embodiments of the present invention, the second housing is provided with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are separated from each other, and both the inlet pipe and the outlet pipe are connected to the heat dissipation channel.

[0015] According to some embodiments of the present invention, the limiting device of the hydraulic shear further includes: a support member, wherein the support member is clamped between the side wall of the first housing and the side wall of the second housing and / or the support member is clamped between the bottom wall of the first housing and the bottom wall of the second housing.

[0016] According to a second aspect of the present invention, a bar shearing assembly includes a limiting device for the hydraulic shear.

[0017] The beneficial effects of this embodiment are as follows: by setting a trigger and a switch, the switch sends a signal to ensure that the hydraulic shear returns to the same position each time, making the cutting length more accurate, thereby improving the yield and fixed weight rate and saving costs.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the limiting device according to an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the limiting device according to an embodiment of the present utility model. Figure 1 ;

[0022] Figure 3 This is a cross-sectional view of the limiting device according to an embodiment of the present utility model. Figure 2 ;

[0023] Figure 4 This is a side view of the limiting device according to an embodiment of the present utility model;

[0024] Figure 5 This is a top view of the limiting device according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 100. Limiting device;

[0027] 10. Outer shell; 11. First shell; 12. Second shell; 121. Inlet pipe; 122. Outlet pipe; 13. Limiting component; 14. Support component;

[0028] 20. Limiting component; 21. Trigger; 211. Rotating rod; 2111. Limiting part; 2112. Rotating part; 212. Paddle; 22. Switch; 23. Rotating shaft; 24. Fixing part; 241. Slot. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0030] The following is for reference. Figures 1-5 The present invention describes a limiting device 100 according to an embodiment of the present invention, and also proposes a bar shearing assembly.

[0031] Reference Figures 1-5 As shown, the limiting device 100 of the hydraulic shear in this embodiment of the present invention includes: a housing 10 and a limiting component 20. The limiting component 20 includes: a trigger member 21 and a switch member 22. The switch member 22 is disposed inside the housing 10. The trigger member 21 is rotatably disposed on the housing 10 to selectively contact the switch member 22. The switch member 22 is electrically connected to the hydraulic shear. When the hydraulic shear returns to its original position, it causes the trigger member 21 to rotate and contact the switch member 22, so that the hydraulic shear returns to its original position.

[0032] Currently in the steel industry, hydraulic shears in the continuous casting process cut the billets after continuous casting, mostly according to the integral length determination in the PLC program. However, the hydraulic shear's return to the original position is not accurate enough each time, resulting in errors in the cutting length when cutting again, leading to inconsistent cutting lengths each time and adversely affecting the next process. By rotating the trigger element 21 to contact the switch element 22, which is electrically connected to the hydraulic shear, the switch element 22 sends a signal to stop the hydraulic cylinder, allowing the hydraulic shear to reach the designated position, thus solving the problem of inaccurate positioning of the hydraulic shear each time.

[0033] If the signal from switch 22 is not detected, the system will continuously send commands to keep the hydraulic cylinder energized until the signal from switch 22 is received. By setting trigger 21 and switch 22, the hydraulic shear is ensured to return to the same position each time, making the cutting length more accurate, thereby improving the yield and weight rate of the blank and saving costs. Switch 22 can be a proximity switch.

[0034] Furthermore, the housing 10 can be a water-cooled housing, that is, a water-cooling system is provided inside the housing 10, which removes heat through coolant circulation, and a valve for controlling the water-cooling system is provided on the outside of the housing 10. By placing the switch 22 on the inside of the housing 10, a good working environment for the switch 22 can be ensured, thus ensuring signal stability.

[0035] Therefore, by setting up a trigger element 21 and a switch element 22, the switch element 22 sends a signal to ensure that the hydraulic shear returns to the same position each time, making the cutting length more accurate, thereby improving the yield and fixed weight rate and saving costs.

[0036] Reference Figures 1-5 As shown, the trigger element 21 includes a rotating rod 211 and a lever 212. The rotating rod 211 and the lever 212 are fixedly connected. The rotating rod 211 is located on the outside of the housing 10, and the lever 212 is located inside the housing 10 and selectively contacts the switch element 22. When the hydraulic shear returns to its original position, it drives the rotating rod 211 to rotate. Thus, when the hydraulic shear returns to the designated position, it drives the rotating rod 211 to rotate. The rotating rod 211 is fixedly connected to the lever 212. The rotation of the rotating rod 211 drives the lever 212 to rotate, and the lever 212 touches the switch element 22, thereby causing the switch element 22 to send a signal. After receiving the signal, the hydraulic cylinder stops operating, and the hydraulic shear stops at the designated position.

[0037] Reference Figures 1-5As shown, the rotating rod 211 includes a limiting part 2111 and a rotating part 2112, which are connected to each other. When the hydraulic shear returns to its original position, it drives the rotating part 2112 to rotate. The limiting part 2111 and the housing 10 selectively engage in a limiting cooperation. Specifically, the hydraulic shear collides with the rotating part 2112 from one side of the limiting device 100. The rotation of the rotating part 2112 drives the lever 212 to rotate. The lever 212 triggers the switch 22 to send a signal, and the hydraulic cylinder stops operating. Simultaneously, the rotation of the rotating part 2112 also drives the rotation of the limiting part 2111. When the hydraulic cylinder stops, the limiting part 2111 has already rotated a certain angle. In order to make the rotating rod 211 quickly return to its original position to prepare for the next hydraulic shear return, a mating hole is provided on the limiting part 2111, which can be used to suspend the counterweight. The weight of the counterweight causes the limiting part 2111 to rotate in the opposite direction, and the limiting part 2111 is matched with the outer shell 10 to limit the movement, so that the limiting part 2111 stops at the initial position of the rotating rod 211. This ensures that when the hydraulic shear returns to its original position, the rotating rod 211 can drive the lever 212 to trigger the switch 22.

[0038] The rotating part 2112 is provided with a flange to increase the contact area between the hydraulic shear and the rotating part 2112, ensuring that the hydraulic shear touches the rotating part 2112 when it returns to its original position, thereby improving the reliability of the system.

[0039] Reference Figures 1-5 As shown, the limiting device 100 of the hydraulic shear also includes a limiting member 13, which is fixed to the outside of the housing 10. The limiting part 2111 and the limiting member 13 selectively limit each other. The limiting member 13 can be a protruding structure on the housing 10. When the rotating rod 211 is in the initial position, the limiting part 2111 is blocked by the protruding limiting member 13 and cannot rotate downwards. The limiting member 13 can be cylindrical or spherical.

[0040] Reference Figures 1-5 As shown, the limiting component 20 also includes: a rotating shaft 23, with the outer shell 10 passing through both ends of the rotating shaft 23. One end of the rotating shaft 23 is fixedly connected to the rotating rod 211, and the lever 212 is fixed on the rotating shaft 23. The rotation of the rotating rod 211 and the lever 212 are both centered on the rotating shaft 23. The rotation of the rotating rod 211 drives the rotating shaft 23 to rotate. The lever 212 is fixed on the rotating shaft 23 and rotates at the same amplitude as the rotating shaft 23. This ensures that when the hydraulic shears touch the rotating rod 211, the rotating rod 211 rotates and the lever 212 rotates synchronously. The signal delay of the switching component 22 is small, which can accurately control the return position of the hydraulic shears.

[0041] Both the rotating rod 211 and the paddle 212 can be fixed to the rotating shaft 23 with nuts. That is, the rotating rod 211 and the paddle 212 are provided with nut limiting positions on both sides to prevent the rotating rod 211 and the paddle 212 from moving on the rotating shaft 23 and improve the reliability of the limiting component 20.

[0042] Reference Figures 1-5 As shown, the limiting assembly 20 also includes a fixing member 24, which is disposed within the housing 10. The fixing member 24 has a slot 241, and the switching member 22 is fixed in the slot 241. The fixing member 24 is used to fix the switching member 22 within the housing 10 to prevent movement of the switching member 22 and improve system stability. The fixing member 24 has a slot 241 positioned opposite to the lever 212. The switching member 22 is fixed at the corresponding position on the lever 212. Rotation of the lever 212 can precisely trigger the switching member 22, causing it to send a signal to stop the hydraulic cylinder.

[0043] Reference Figures 1-5 As shown, the housing 10 includes: a first housing 11 and a second housing 12. The first housing 11 is disposed inside the second housing 12. A heat dissipation channel is provided between the first housing 11 and the second housing 12. The heat dissipation channel can contain coolant to prevent overheating inside the housing 10 and affect the normal operation of the switch 22.

[0044] Reference Figures 1-5 As shown, the second housing 12 is provided with an inlet pipe 121 and an outlet pipe 122, which are separated from each other. Both the inlet pipe 121 and the outlet pipe 122 are connected to the heat dissipation channel. The inlet pipe 121 and the outlet pipe 122 are used to ensure the flow of coolant in the heat dissipation channel. The coolant enters the heat dissipation channel from the inlet pipe 121, exchanges heat with the heat generated inside the housing 10, and then flows out from the outlet pipe 122, thereby reducing the temperature inside the housing 10 and maintaining a good working environment for the switch 22.

[0045] Reference Figures 1-5 As shown, the limiting device 100 of the hydraulic shear also includes a support member 14, which is sandwiched between the side wall of the first housing 11 and the side wall of the second housing 12. The support member 14 between the two housings can enhance the strength and rigidity of the outer shell 10 structure, prevent the first housing 11 and the second housing 12 from deforming or being damaged under the pressure of the coolant, and ensure that the housings maintain a fixed distance, so that the coolant can flow normally in the predetermined space, avoid local coolant flow obstruction or excessive concentration, thereby ensuring the uniformity of heat exchange.

[0046] Alternatively, the support member 14 can be sandwiched between the bottom wall of the first housing 11 and the bottom wall of the second housing 12. Of course, the support member 14 can also be disposed between the side wall of the first housing 11 and the side wall and bottom wall of the second housing 12, which can also enhance the strength of the outer shell 10 and ensure uniform heat exchange of the coolant.

[0047] According to a second aspect embodiment of the present invention, a bar shearing assembly includes a limiting device 100 for the hydraulic shears. The bar shearing assembly uses hydraulic shears to shear bars of uniform length, resulting in a high yield and a high fixed weight ratio.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hydraulic shear limit device, comprising: It includes: The shell (10); The limiting assembly (20) includes: a trigger (21) and a switch (22), the switch (22) is arranged in the shell (10), the trigger (21) is rotatably arranged on the shell (10), and the trigger (21) is selectively contacted with the switch (22), the switch (22) and the hydraulic shear are electrically connected, and the hydraulic shear is rotated and contacted with the switch (22) when returning to reset the hydraulic shear.

2. The hydraulic shear limit device of claim 1, wherein, The trigger (21) includes: a rotating rod (211) and a dial (212), the rotating rod (211) and the dial (212) are fixedly connected, the rotating rod (211) is arranged outside the shell (10), the dial (212) is arranged in the shell (10), and the dial (212) is selectively contacted with the switch (22), and the rotating rod (211) is rotated when the hydraulic shear is reset.

3. The hydraulic shear limit device of claim 2, wherein, The rotating rod (211) includes: a limiting part (2111) and a rotating part (2112), the limiting part (2111) and the rotating part (2112) are connected with each other, the rotating part (2112) is rotated when the hydraulic shear is reset, and the limiting part (2111) and the shell (10) are selectively limited and matched.

4. The hydraulic shear limit device of claim 3, wherein, It also includes: The limiting part (2111) and the limiting part (2111) are selectively limited and matched.

5. The hydraulic shear limit device of claim 2, wherein, The limiting assembly (20) further includes: a rotating shaft (23), both ends of the rotating shaft (23) pass through the shell (10), one end of the rotating shaft (23) is fixedly connected with the rotating rod (211), and the dial (212) is fixed on the rotating shaft (23).

6. The hydraulic shear limit device of claim 1 wherein, The limiting assembly (20) further includes: a fixing part (24), the fixing part (24) is arranged in the shell (10), and the fixing part (24) is provided with a slot (241), and the switch (22) is fixed on the slot (241).

7. The hydraulic shear limit device of claim 1 wherein, The shell (10) includes: a first shell (11) and a second shell (12), the first shell (11) is arranged in the second shell (12), and a heat dissipation channel is arranged between the first shell (11) and the second shell (12).

8. The hydraulic shear limit device of claim 7, wherein, The second shell (12) is provided with an inlet pipe (121) and an outlet pipe (122), the inlet pipe (121) and the outlet pipe (122) are separated from each other, and the inlet pipe (121) and the outlet pipe (122) are communicated with the heat dissipation channel.

9. The hydraulic shear limit device of claim 7, wherein, It also includes: The support (14) is clamped between the side wall of the first shell (11) and the side wall of the second shell (12) and / or the support (14) is clamped between the bottom wall of the first shell (11) and the bottom wall of the second shell (12).

10. A bar shearing assembly characterized by, It includes: The limiting device (100) of the hydraulic shear according to any one of claims 1-9.

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