Caterpillar band guide wheel quenching inductor

Abstract

The utility model provides a caterpillar band guide wheel quenching inductor which comprises a fixing plate, one end of the fixing plate is provided with a current-conducting plate and a connecting seat connected with a transformer, the upper side and the lower side of the end, away from the connecting seat, of the fixing plate are respectively provided with an effective ring and a water spraying device, and each effective ring comprises a preheating pipe and a heating pipe. A notch is formed in the position, corresponding to the sharp corner of the guide wheel, of the preheating pipe of the effective ring and used for preventing the sharp corner of the guide wheel from being excessively heated. The two sides of the track guide wheel can be scanned and quenched at the same time, manual material turning and repositioning procedures are not needed, the manual labor intensity is greatly reduced, and the labor productivity is improved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing track components of construction machinery, in particular to a quenching inductor for a track idler wheel. Background Art

[0002] The idler wheel is a core component of the traveling system of crawler construction machinery. It can accurately guide the track to rotate along a predetermined trajectory, effectively preventing the track from running off track and derailing. Therefore, the requirements for the idler wheel material and manufacturing process are extremely strict. Especially, the contact surface between the wheel body and the track needs to have high hardness and high wear resistance to resist the loss caused by long-term friction.

[0003] In actual production, induction quenching technology has become an ideal choice for the surface heat treatment of idler wheels due to its advantages of high efficiency, energy saving and precise control. However, the currently widely used double-turn series scanning quenching inductor can only perform single-side scanning quenching on the idler wheel in application. After one side quenching is completed, manual turning over and repositioning operations are required. This process not only reduces the overall heating efficiency, but also significantly increases the manual labor intensity and production cost. Summary of the Utility Model

[0004] To solve the problems in the above-mentioned prior art, the utility model provides a quenching inductor for a track idler wheel, including: a fixing plate, one end of the fixing plate is provided with a conductive plate and a socket connected to a transformer, and both the upper and lower sides of the end of the fixing plate far from the socket are provided with effective coils and water spraying devices. The effective coil includes a preheating pipe and a heating pipe.

[0005] Further, the preheating pipe of the effective coil is provided with a notch corresponding to the sharp corner of the idler wheel to avoid overheating at the sharp corner of the idler wheel.

[0006] Further, a lifting mechanism is arranged on the fixing plate, and the effective coil is connected to the fixing plate through the lifting mechanism to adjust the heating gap between the effective coil and the idler wheel.

[0007] Further, the lifting mechanism includes an adjusting bolt and a locking nut. The effective coil is provided with a bolt hole that is in threaded cooperation with the adjusting bolt. When the effective coil moves to an appropriate position on the adjusting bolt, the locking nut can abut against the effective coil to limit the movement of the effective coil.

[0008] Further, the effective coil is of an L-shaped structure, and two effective coils arranged on the upper and lower sides of the fixing plate in opposite directions form a structure having the same shape as the concave quenching area of the idler wheel.

[0009] Further, the heating surface of the effective coil is parallel to the tread surface and the concave inclined surface of the concave quenching area of the idler wheel.

[0010] Further, the two effective turns on the upper and lower sides of the fixed plate are staggered on the same arc to achieve the staggered distribution of the flexible belts of the upper wheel body and the lower wheel body of the guide wheel.

[0011] Further, a silicon steel sheet magnetic conductor is provided on the effective turn to improve the magnetic field distribution of the inductor.

[0012] Compared with the prior art, the present utility model mainly has the following advantages:

[0013] The effective turns of the quenching inductor of the crawler guide wheel of the present utility model are symmetrically arranged on the upper and lower sides of the fixed plate, which can realize the bilateral simultaneous scanning quenching of the crawler guide wheel, without manual material turning and repositioning processes, greatly reducing the manual labor intensity, improving the labor productivity, and reducing the production cost.

[0014] The effective turn of the quenching inductor of the crawler guide wheel of the present utility model includes a preheating pipe and a heating pipe. The temperature of the quenching area is gradually increased through the preheating pipe and the heating pipe, and a uniform wear-resistant martensite structure is formed after cooling. At the same time, a notch is provided on the preheating pipe corresponding to the sharp corner of the guide wheel, thereby reducing the influence of the sharp corner effect in the subsequent heating process. To reduce the overheating of the sharp corner of the guide wheel, prevent the generation of quenching cracks, and improve the quality and reliability of the guide wheel. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the quenching inductor of the crawler guide wheel according to an embodiment of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the guide wheel according to an embodiment of the present utility model;

[0017] In the figure: 1, connection seat; 2, conductive plate; 3, effective turn; 31, preheating pipe; 32, heating pipe; 4, water spraying device; 5, fixed plate; 6, guide wheel; 61, lower wheel body of the guide wheel; 62, upper wheel body of the guide wheel; 63, concave quenching area. Detailed Embodiment

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not intended to limit the scope of the present utility model.

[0019] Such as Figure 1 、 Figure 2As shown in the figure, the utility model provides a quenching inductor for a crawler idler, which can perform scanning quenching on both sides of the crawler idler 6 simultaneously. The inductor includes: a fixing plate 5, one end of the fixing plate 5 is provided with a conductive plate 2 and a socket 1 connected to a transformer. One end of the socket 1 is fixedly connected to the conductive plate 2, and the other end of the socket 1 is closely attached to the secondary winding surface of the intermediate frequency quenching transformer, for transmitting the intermediate frequency power through the conductive plate 2 to the effective coil 3 of the inductor. On the upper and lower sides of the end of the fixing plate 5 away from the socket 1, there are both an effective coil 3 and a water spraying device 4. The effective coil 3 is electrically connected to the conductive plate 2, for heating the idler 6. The water spraying device 4 is used to achieve surface cooling of the idler 6, so as to improve the surface wear resistance of the idler 6.

[0020] When performing quenching processing on the surface of the idler 6, first place the crawler idler 6 flat on the four-jaw support chuck of the quenching machine tool, and install a positioning mandrel at the core of the chuck for inner hole positioning of the idler 6 to ensure uniform circumferential rotation of the wheel body. Connect the quenching inductor of the crawler idler to the intermediate frequency quenching transformer, and adjust the gap between the effective coils 3 symmetrically arranged on the upper and lower sides of the fixing plate 5 and the surface of the concave quenching area 63 of the idler 6. Ensure that the heating gaps of the upper wheel body 62 and the lower wheel body 61 of the idler are uniform, so as to achieve simultaneous scanning quenching on both sides of the idler 6. This technical solution does not require manual turning and repositioning of the crawler idler 6, can save 30 - 50% of the heat treatment operation time, greatly reduce the labor intensity of workers, improve labor productivity, and reduce production costs.

[0021] In some embodiments, the effective coil 3 of the inductor is arranged in a profiling structure, which is an L-shaped structure formed by connecting two turns of rectangular tubes in series. The two effective coils 3 on the upper and lower sides of the fixing plate 5 are arranged in reverse to form the same structure as the concave quenching area 63 of the idler. The heating surface of the effective coil 3 is parallel to the tread surface and the concave inclined surface of the idler 6, so as to achieve uniform heating of the surface of the concave quenching area 63 of the idler.

[0022] In addition, the effective coil 3 includes a preheating tube 31 and a heating tube 32 that are parallel to each other, and there is a notch at the right-angle connection of the preheating tube 31. The temperature of the quenching area is gradually increased through the preheating tube 31 and the heating tube 32, and a uniform wear-resistant martensite structure is formed after cooling. At the same time, the preheating tube 31 is provided with a notch corresponding to the sharp corner of the idler 6, so as to reduce the influence of the sharp corner effect during the subsequent heating process. To prevent the sharp corner of the idler 6 from overheating and causing quenching cracks. The notch of the preheating tube 31 can make the heat distribution of the idler 6 more uniform during the preheating stage, help reduce the overheating risk at the sharp corner, improve the temperature uniformity of the entire quenching process, and is beneficial to obtaining better quenching effects and tissue properties.

[0023] In some embodiments, the effective coil 3 is made of red copper. The rectangular tube specifications of the effective coil 3 are 10mm×8mm or 12mm×10mm, the wall thickness of the rectangular tube is 2mm, and the clearance between the rectangular tube of the effective coil 3 and the tread surface and concave inclined surface of the guide wheel 6 is 2 - 4mm. The distance between each rectangular tube of the effective coil 3 is 1 times the length of the rectangular cross-section of the rectangular tube. For example, when the rectangular cross-section of the rectangular tube is 10mm×8mm, the distance between each rectangular tube is 10mm.

[0024] When quenching the surface of the guide wheel 6, the quenching machine tool will drive the guide wheel 6 to rotate circumferentially at a uniform speed. If the rotation angle of the guide wheel 6 exceeds one full circle, it will cause some areas of the guide wheel 6 to be repeatedly quenched, resulting in uneven stress states on the surface and inside of the guide wheel 6, seriously affecting the service life and performance of the guide wheel 6. In actual production, when the quenching machine tool drives the guide wheel 6 to rotate circumferentially at a uniform speed for quenching, a certain margin will be set for the rotation angle of the guide wheel 6, leaving a part of the unquenched area on the guide wheel 6, that is, the soft zone of the guide wheel 6.

[0025] In order to reduce the influence of the soft zone of the guide wheel 6 on the performance of the guide wheel 6, in some embodiments, the two effective coils 3 on the upper and lower sides of the fixing plate 5 are staggered on the same arc, so as to make the soft zones of the upper wheel body 62 and the lower wheel body 61 of the guide wheel stagger and distribute with each other. It can effectively avoid the soft zones of the upper wheel body 62 and the lower wheel body 61 of the guide wheel from simultaneously bearing the maximum load force of the running track, thereby improving the service life and performance of the guide wheel 6.

[0026] In some embodiments, silicon steel sheet magnetic conductors are uniformly arranged on the effective coil 3 of the inductor. The single thickness of the silicon steel sheet magnetic conductor is 0.2mm, so as to change the distribution of magnetic induction lines at this place and play a role in forcing the current flow. Thereby increasing the local induction heating temperature and obtaining an ideal uniform heat pattern.

[0027] In some embodiments, the crawler guide wheel quenching inductor further includes a lifting mechanism. The effective coil 3 is connected to the fixing plate 5 through the lifting mechanism to adjust the heating clearance between the effective coil 3 and the guide wheel 6. Specifically, the lifting mechanism includes an adjusting screw and a locking nut. Preferably, the adjusting screw is a non-magnetic stainless steel screw. One end of the adjusting screw is fixed on the effective coil 3, and the fixing plate 5 is provided with a bolt hole that is threadedly matched with the adjusting screw. After the effective coil 3 moves to an appropriate position, the locking nut is screwed so that the locking nut can abut against the fixing plate 5 to limit the relative movement between the effective coil 3 and the fixing plate 5. Thereby adjusting the heating clearance between the effective coil 3 and the guide wheel 6 and improving the accuracy of the quenching operation.

[0028] Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A crawler idler quenching inductor, characterized in that, Comprising: A fixed plate (5), one end of the fixed plate (5) is provided with a conductive plate (2) and a socket (1) connected to a transformer, and both the upper and lower sides of the end of the fixed plate (5) far from the socket (1) are provided with effective coils (3) and water spraying devices (4), and the effective coil (3) includes a preheating pipe (31) and a heating pipe (32).

2. The crawler carrier idler quenching inductor according to claim 1, characterized in that, The preheating pipe (31) of the effective coil (3) is provided with a notch corresponding to the sharp corner of the guide wheel (6) to avoid overheating at the sharp corner of the guide wheel (6).

3. The crawler carrier idler quenching inductor according to claim 1, characterized in that, The crawler guide wheel quenching inductor further includes a lifting mechanism, and the effective coil (3) is connected to the fixed plate (5) through the lifting mechanism to adjust the heating gap between the effective coil (3) and the guide wheel (6).

4. The crawler idler quenching inductor according to claim 3, characterized in that, The lifting mechanism includes an adjusting screw and a locking nut. One end of the adjusting screw is fixed on the effective coil (3), and the fixed plate (5) is provided with a bolt hole threadedly matched with the adjusting screw. When the effective coil (3) moves to an appropriate position, the locking nut can abut against the fixed plate (5) to limit the relative movement between the effective coil (3) and the fixed plate (5).

5. The crawler carrier idler quenching inductor according to claim 1, characterized in that, The effective coil (3) is of an L-shaped structure, and two effective coils (3) arranged oppositely on the upper and lower sides of the fixed plate (5) form a structure having the same shape as the concave quenching zone (63) of the guide wheel.

6. The crawler carrier idler quenching inductor according to claim 5, characterized in that, The heating surface of the effective coil (3) is parallel to the tread surface and the concave inclined surface of the guide concave quenching zone (63).

7. The crawler idler quenching inductor according to claim 1, characterized in that The two effective coils (3) on the upper and lower sides of the fixed plate (5) are staggered on the same arc to realize the staggered distribution of the soft bands of the upper wheel body (62) and the lower wheel body (61) of the guide wheel.

8. The crawler idler quenching inductor according to claim 1, wherein, The effective coil (3) is provided with a silicon steel sheet magnetic conductor to improve the magnetic field distribution of the inductor.

Images