Heat treatment device for suspension plate spring

Abstract

The invention provides a heat treatment device for a suspension plate spring, and relates to the field of plate spring heat treatment, the heat treatment device comprises a plate spring clamping structure, an induction heating ring, a driving motor, a cooling box and an annular spray pipe; the two sets of plate spring clamping structures are arranged on the two sides of the supporting ring respectively and installed on connecting rods connected with the bottoms of the two sets of walking frames, the two sets of induction heating rings and the two sets of cooling boxes are arranged on the two sides of the supporting ring respectively, a driving motor is arranged on one side of each induction heating ring, and a driving roller A is installed on a motor shaft of each driving motor. The cooling box is provided with a set of penetrating openings, and the inner side of the cooling box is provided with a set of annular spraying pipes. The plate spring can rotate in the induction heating rings and the annular spray pipe, the complete heating and rapid cooling efficiency of the plate spring is improved, the heat treatment efficiency of the plate spring can be improved by arranging the two induction heating rings and the two cooling boxes, and the problems that manual operation is time-consuming, labor-consuming and low in efficiency are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of leaf spring heat treatment, and particularly relates to a heat treatment device for a suspension leaf spring. Background Art

[0002] A leaf spring, abbreviated as a leaf spring, is a plate-shaped spring composed of a stack of at least 1 piece of spring steel, and is usually used to support a carriage, playing a role in buffering and vibration reduction. After processing, the leaf spring usually needs to be heat-treated to improve the toughness and plasticity of the steel, thereby enhancing the fatigue performance and corrosion resistance of the spring.

[0003] Currently, when heat-treating a leaf spring, it is usually manually placed into a heating furnace for heating, and the heated leaf spring is clamped into cooling oil for rapid cooling. It is also necessary to manually clamp out the cooled leaf spring. The entire process is time-consuming and laborious, and it is also easy to injure the staff. Summary of the Invention

[0004] To solve the problems in the background art, the present invention provides a heat treatment device for a suspension leaf spring, which can make the leaf spring rotate in an induction heating coil and an annular nozzle, improving the complete heating and rapid cooling efficiency of the leaf spring, and by setting two groups of induction heating coils and a cooling tank, the heat treatment efficiency of the leaf spring can be improved.

[0005] A heat treatment device for a suspension leaf spring provided by the present invention specifically includes: a base, a leaf spring clamping structure, a traveling frame, an induction heating coil, a driving motor, a cooling tank, and an annular nozzle; A support ring is provided in the middle of the top side of the base, a top plate is provided on the top of the support ring, and an I-shaped hoisting slide rail is installed on the bottom side of the top plate. Both the hoisting slide rail and the support ring are waist-shaped structures, and two groups of traveling frames are installed on the hoisting slide rail; there are two groups of leaf spring clamping structures, which are respectively placed on both sides of the support ring and installed on the connecting rod connected to the bottoms of the two groups of traveling frames. The leaf spring clamping structure includes a cross plate, a sliding clamping plate, an adjusting screw, a vertical connecting plate, and a tension spring. A group of chutes are respectively provided at both ends of the cross plate, and sliding clamping plates are respectively slidably clamped in the chutes. Adjusting screws are respectively inserted through the sliding clamping plates by thread engagement. The outer ends of the sliding clamping plates are respectively rotatably connected to vertical connecting plates, and two groups of tension springs are respectively connected between the vertical connecting plates and the sliding clamping plates. There are two groups of induction heating coils and cooling tanks respectively, which are respectively placed on both sides of the support ring. A driving motor is provided on one side of the induction heating coil. The driving motor is fixed on a support seat, and a driving roller A is installed on the motor shaft of the driving motor. A group of insertion ports are provided on the cooling tank, and an annular nozzle is provided inside the cooling tank, and the center of the annular nozzle is opposite to the center of the induction heating coil and the insertion port.

[0006] Further, the leaf spring clamping structure further includes an outer rib plate, a leaf spring end block, a rotating shaft and a linkage roller; The outer rib plate is fixed on the outer side of the vertical connecting plate. The inner end of the leaf spring end block is provided with a leaf spring socket and has an upwardly inclined structure. The outer side of the leaf spring end block is connected with a rotating shaft, and the rotating shaft rotatably penetrates through the bottom ends of the vertical connecting plate and the outer rib plate.

[0007] Further, a linkage roller is further provided on the rotating shaft between the vertical connecting plate and the outer rib plate Further, the connecting rod is formed by connecting two groups of circular rods and a group of square rods. Threaded rods are respectively provided at both ends of the square rod and are connected to the circular rods by screwing the threaded rods into the threaded holes of the circular rods. And the two groups of circular rods respectively penetrate through the bottom side of the traveling frame and are fixed by clamps, and the top end of the hanging frame fixed in the middle of the cross plate penetrates through the square rod.

[0008] Further, traveling wheels are respectively provided on the inner sides of the two groups of traveling frames. The traveling wheels are attached to the I-shaped structure of the hoisting slide rail, and a traveling motor is further installed on the outer side of one group of traveling frames. The motor shaft of the traveling motor is connected to the traveling wheel of this group of traveling frames.

[0009] Further, support frames A are respectively provided at both ends of the induction heating coil. A horizontal strip opening A is provided on the top side of the induction heating coil, and the induction heating coil is connected to an external power supply through a cable.

[0010] Further, support frames B are respectively provided at both ends and in the middle of the annular spray pipe. The middle of the annular spray pipe is connected to the water outlet of the spray pump inside the cooling tank through a pipe. A horizontal strip opening B is provided on the top side of the annular spray pipe, and spray holes are provided inside the annular spray pipe.

[0011] Further, a waterproof motor is further provided inside the cooling tank. The waterproof motor is installed on a fixed frame, and a driving roller B is installed on the motor shaft of the waterproof motor. Guide rods are respectively penetrated through both sides of the fixed frame, and the middle bottom side of the fixed frame is further connected to the telescopic end of a lifting push rod, and the lifting push rod is installed inside the base.

[0012] A heat treatment device for a suspension leaf spring provided by the present invention has the following beneficial effects: The present invention can make the leaf spring rotate inside the induction heating coil and the annular spray pipe, improve the complete heating and rapid cooling efficiency of the leaf spring, and by setting two groups of induction heating coils and cooling tanks, the heat treatment efficiency of the leaf spring can be improved.

[0013] In addition, by setting up a leaf spring clamping structure, leaf springs of different lengths can be clamped. By setting up two sets of induction heating coils and a driving motor, when the leaf spring clamping structure clamps the leaf spring and enters the induction heating coil, the leaf spring can be inductively heated. At the same time, the driving roller A contacts the linkage roller on one side. The driving motor drives the driving roller A to rotate, and synchronously drives the linkage roller and the rotating shaft to rotate, so that the leaf spring rotates in the induction heating coil, and thus the leaf spring can be completely heated under the action of the induction heating coil.

[0014] In addition, by setting up a cooling tank and an annular spray pipe, after the leaf spring is completely heated, the walking frame drives the leaf spring clamping structure into the transparent cooling tank, and inserts it into the annular spray pipe through the horizontal strip opening B on the upper side of the annular spray pipe. The injection pump is used to send the cooling oil into the annular spray pipe and spray it out to quickly cool the leaf spring. At the same time, the lifting push rod drives the waterproof motor to move upward, so that the driving roller B contacts the linkage roller on the other side, and then the waterproof motor drives the linkage roller and the rotating shaft on this side to rotate, so that the leaf spring can rotate in the annular spray pipe, improving the quick cooling efficiency of the leaf spring.

[0015] In addition, by setting up induction heating coils and a cooling tank on the other side of the support ring, during the process of the leaf spring clamping structure walking and rotating around the hoisting slide rail, heat treatment can also be carried out on the leaf spring on the other side, improving the heat treatment efficiency of the leaf spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1 A schematic diagram showing the overall structure of the present invention is shown; Figure 2 Shows the Figure 1 Enlarged structural schematic diagram at A in the present invention; Figure 3 Shows the Figure 1 Side elevation structural schematic diagram in the present invention; Figure 4 Shows the Figure 3 Enlarged structural schematic diagram at B in the present invention; Figure 5 Shows the Figure 1 Frontal structural schematic diagram in the present invention; Figure 6 Shows the Figure 5 Enlarged structural schematic diagram at C in the present invention; Figure 7 shows the Figure 1 structural schematic diagram after vertical sectioning of the front side of the cooling box in the present invention; Figure 8 shows the Figure 7 magnified structural schematic diagram at position D in the present invention; Figure 9 shows the Figure 7 magnified structural schematic diagram at position E in the present invention; Figure 10 shows the Figure 1 top - view structural schematic diagram after removing the top plate in the present invention; Figure 11 shows the structural schematic diagram after splitting the connecting rod in the present invention.

[0019] List of reference numerals 1. Base; 101. Support ring; 102. Top plate; 103. Lifting slide rail; 2. Leaf - spring clamping structure; 201. Cross - plate; 2011. Chute; 2012. Hanger; 202. Sliding clamping plate; 203. Adjusting screw; 204. Vertical connecting plate; 205. Tension spring; 206. Outer rib plate; 207. Leaf - spring end clamping block; 2071. Rotating shaft; 208. Linkage roller; 3. Walking frame; 301. Connecting rod; 3011. Circular rod; 3012. Square rod; 302. Walking motor; 4. Induction heating coil; 401. Support frame A; 402. Horizontal strip opening A; 5. Driving motor; 501. Support seat; 502. Driving roller A; 6. Cooling box; 601. Intersection opening; 602. Injection pump; 7. Annular spray pipe; 701. Support frame B; 702. Horizontal strip opening B; 703. Spray hole; 8. Waterproof motor; 801. Fixed frame; 8011. Guide rod; 802. Driving roller B; 803. Lifting push rod. Detailed implementation manners

[0020] In order to make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0021] Embodiment 1: Please refer to Figures 1 to 11 : The present invention provides a heat treatment device for a suspension leaf spring, including: A heat treatment device for a suspension leaf spring provided by the present invention specifically includes: a base 1, a leaf spring clamping structure 2, a traveling frame 3, an induction heating coil 4, a driving motor 5, a cooling tank 6, and an annular nozzle 7; A support ring 101 is provided in the middle of the top side of the base 1. A top plate 102 is provided on the top of the support ring 101, and an I-shaped hoisting slide rail 103 is installed on the bottom side of the top plate 102. Both the hoisting slide rail 103 and the support ring 101 are waist-round structures, and two groups of traveling frames 3 are installed on the hoisting slide rail 103; There are two groups of leaf spring clamping structures 2, which are respectively placed on both sides of the support ring 101 and installed on the connecting rod 301 connected to the bottoms of the two groups of traveling frames 3. The leaf spring clamping structure 2 includes a cross plate 201, a sliding clamping plate 202, an adjusting screw 203, a vertical connecting plate 204, and a tension spring 205. A group of chutes 2011 are respectively provided at both ends of the cross plate 201. Sliding clamping plates 202 are respectively slidably clamped in the chutes 2011. Adjusting screws 203 are respectively inserted through the sliding clamping plates 202 by thread engagement. The outer ends of the sliding clamping plates 202 are respectively rotatably connected to the vertical connecting plates 204, and two groups of tension springs 205 are respectively connected between the vertical connecting plates 204 and the sliding clamping plates 202. There are two groups of induction heating coils 4 and cooling tanks 6 respectively, which are respectively placed on both sides of the support ring 101. A driving motor 5 is provided on one side of the induction heating coil 4. The driving motor 5 is fixed on the support base 501, and a driving roller A 502 is installed on the motor shaft of the driving motor 5. A group of insertion ports 601 are provided on the cooling tank 6, and a group of annular nozzles 7 are provided inside the cooling tank 6. The center of the annular nozzle 7 is opposite to the center of the induction heating coil 4 and the insertion port 601.

[0022] In the embodiment of the present invention, as Figure 2 shown in Figure 6 the figure, the leaf spring clamping structure 2 further includes an outer rib plate 206, a leaf spring end block 207, a rotating shaft 2071, and a linkage roller 208; The outer rib plate 206 is fixed on the outside of the vertical connecting plate 204. The inner end of the leaf spring end block 207 is provided with a leaf spring insertion port and is in an upward inclined structure. The outer side of the leaf spring end block 207 is connected with a rotating shaft 2071, and the rotating shaft 2071 is rotatably inserted through the bottom ends of the vertical connecting plate 204 and the outer rib plate 206. A linkage roller 208 is also provided on the rotating shaft 2071 between the vertical connecting plate 204 and the outer rib plate 206. By clamping the linkage roller 208 with the outer rib plate 206 and the vertical connecting plate 204, the two ends of the leaf spring can be respectively clamped into the leaf spring end block 207 by pulling the two vertical connecting plates 204. Under the action of the tension spring 205, the leaf spring is clamped between the two leaf spring end blocks 207, and when the linkage roller 208 contacts the driving roller A 502 and the driving roller B 802, it can rotate accordingly.

[0023] In an embodiment of the present invention, as Figure 4 shown in Figure 11 , the connecting rod 301 is formed by connecting two groups of circular rods 3011 and one group of square rods 3012. Threaded rods are respectively provided at both ends of the square rod 3012, and the square rod 3012 is connected to the circular rod 3011 by screwing the threaded rods into the threaded holes of the circular rod 3011. The two groups of circular rods 3011 respectively penetrate into the bottom side of the walking frame 3 and are fixed by clamps. The top end of the hanging frame 2012 fixed in the middle of the top of the cross plate 201 penetrates through the square rod 3012. Walking wheels are respectively arranged on the inner sides of the two walking frames 3, and the walking wheels are attached to the I-shaped structure of the hoisting slide rail 103. A walking motor 302 is further installed on the outer side of one group of walking frames 3, and the motor shaft of the walking motor 302 is connected to the walking wheel of this group of walking frames 3. By using the detachable connecting rod 301, it is convenient to insert the hanging frame 2012 through the square rod 3012. The walking motor 302 drives the walking wheels to rotate, so that the two walking frames 3 can move on the I-shaped structure of the hoisting slide rail 103, thereby driving the leaf spring clamping structure 2 to move synchronously.

[0024] In an embodiment of the present invention, as Figure 2 shown in

[0025] , support frames A401 are respectively provided at both ends of the induction heating coil 4. A horizontal strip opening A402 is provided on the top side of the induction heating coil 4, and the induction heating coil 4 is connected to an external power supply through a cable. It is convenient to make the leaf spring clamping structure 2 clamp the leaf spring and insert it into the induction heating coil 4 through the horizontal strip opening A402, and then the induction heating coil 4 performs induction heating on the leaf spring. Figure 8 In an embodiment of the present invention, as Figure 9 shown in , support frames B701 are respectively provided at both ends and in the middle of the annular nozzle 7. The middle of the annular nozzle 7 is connected to the water outlet of the injection pump 602 inside the cooling tank 6 through a pipeline. A horizontal strip opening B702 is provided on the top side of the annular nozzle 7, and spray holes 703 are provided inside the annular nozzle 7. A waterproof motor 8 is further provided in the cooling tank 6. The waterproof motor 8 is installed on the fixing frame 801, and a driving roller B802 is installed on the motor shaft of the waterproof motor 8. Guide rods 8011 are respectively inserted through both sides of the fixing frame 801, and the middle bottom side of the fixing frame 801 is further connected to the telescopic end of the lifting push rod 803. The lifting push rod 803 is installed inside the base 1. After the leaf spring clamping structure 2 is inserted into the annular nozzle 7 through the horizontal strip opening B702, the injection pump 602 is used to send the cooling oil into the annular nozzle 7 and spray it out to quickly cool the leaf spring. At the same time, the lifting push rod 803 drives the waterproof motor 8 to move upward, so that the driving roller B802 contacts the linkage roller 208 on the other side. Then, the waterproof motor 8 drives the linkage roller 208 and the rotating shaft 2071 on this side to rotate, so that the leaf spring can rotate inside the annular nozzle 7, improving the quick cooling efficiency of the leaf spring.

[0026] Specific usage and function of this embodiment: In the present invention, the walking motor 302 drives the leaf spring clamping structure 2 to move to one side of the induction heating coil 4. According to the length of the leaf spring, the distance between the two vertical connecting plates 204 is adjusted by rotating the adjusting screw 203, and then the distance between the two opposite leaf spring end blocks 207 is adjusted. Then, by pulling the two vertical connecting plates 204, the two ends of the leaf spring are respectively clamped into the leaf spring end blocks 207, and under the action of the tension spring 205, the leaf spring is clamped between the two leaf spring end blocks 207; Then, the walking motor 302 drives the leaf spring clamping structure 2 to move into the induction heating coil 4. At the same time, the driving roller A 502 contacts the linkage roller 208 on one side. The induction heating coil 4 is turned on to perform induction heating on the leaf spring, and the driving motor 5 is started to drive the driving roller A 502 to rotate, synchronously driving the linkage roller 208 and the rotating shaft 2071 to rotate, so that the leaf spring rotates in the induction heating coil 4, and thus the leaf spring can be completely heated under the action of the induction heating coil 4; The walking motor 302 drives the leaf spring clamping structure 2 to move into the transparent cooling tank 6, and the horizontal strip opening B 702 on the upper side of the annular nozzle 7 is inserted into the annular nozzle 7. The injection pump 602 is used to send the cooling oil into the annular nozzle 7 for spraying to quickly cool the leaf spring. At the same time, the lifting push rod 803 drives the waterproof motor 8 to move upward, so that the driving roller B 802 contacts the linkage roller 208 on the other side. Then, the waterproof motor 8 drives the linkage roller 208 and the rotating shaft 2071 on this side to rotate, so that the leaf spring can rotate in the annular nozzle 7, improving the quick cooling efficiency of the leaf spring; After the leaf spring is completely cooled, the walking motor 302 drives the leaf spring clamping structure 2 to be lifted out of the cooling tank 6, and then the leaf spring is removed. When the walking motor 302 drives the leaf spring clamping structure 2 to move to the other side, another leaf spring can also be heat-treated.

[0027] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0028] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A heat treatment device for a suspension leaf spring, comprising: Base (1), leaf spring clamping structure (2), traveling frame (3), induction heating coil (4), drive motor (5), cooling box (6) and annular nozzle (7); In the middle of the top side of the base (1), there is a support ring (101). On the top of the support ring (101), there is a top plate (102). And on the bottom side of the top plate (102), there is a lifting slide rail (103) with an I-shaped structure. Both the lifting slide rail (103) and the support ring (101) are oval-shaped structures. There are two groups of traveling frames (3) installed on the lifting slide rail (103). It is characterized in that there are two groups of leaf spring clamping structures (2), which are respectively placed on both sides of the support ring (101) and installed on the connecting rod (301) connected to the bottoms of the two groups of traveling frames (3). The leaf spring clamping structure (2) includes a cross plate (201), a sliding clamping plate (202), an adjusting screw (203), a vertical connecting plate (204) and a tension spring (205). At both ends of the cross plate (201), there is a group of chutes (2011) respectively. In the chutes (2011), there are sliding clamping plates (202) slidingly clamped respectively. On the sliding clamping plates (202), there are adjusting screws (203) inserted through thread engagement respectively. At the bottom side of the outer ends of the sliding clamping plates (202), there are vertical connecting plates (204) rotatably connected respectively. And between the vertical connecting plates (204) and the sliding clamping plates (202), there are two groups of tension springs (205) connected respectively. There are two groups of induction heating coils (4) and cooling boxes (6) respectively, which are respectively placed on both sides of the support ring (101). On one side of the induction heating coil (4), there is a drive motor (5). The drive motor (5) is fixed on the support base (501). And on the motor shaft of the drive motor (5), there is a drive roller A (502) installed. On the cooling box (6), there is a group of insertion openings (601). And inside the cooling box (6), there is a group of annular nozzles (7). And the center of the annular nozzle (7) is opposite to the center of the induction heating coil (4) and the insertion opening (601).

2. The heat treatment device for a suspension leaf spring according to claim 1, characterized in that: The leaf spring clamping structure (2) further includes an outer rib plate (206), a leaf spring end block (207), a rotating shaft (2071) and a linkage roller (208). The outer rib plate (206) is fixed on the outside of the vertical connecting plate (204). The inner end of the leaf spring end block (207) is provided with a leaf spring insertion opening and has an upward inclined structure. The outer side of the leaf spring end block (207) is connected with a rotating shaft (2071). And the rotating shaft (2071) is rotatably inserted through the bottom ends of the vertical connecting plate (204) and the outer rib plate (206).

3. The heat treatment device for a suspension leaf spring according to claim 2, characterized in that: There is also a linkage roller (208) on the rotating shaft (2071) between the vertical connecting plate (204) and the outer rib plate (206).

4. A heat treatment device for a suspension leaf spring according to claim 1, characterized in that: The connecting rod (301) is formed by connecting two groups of circular rods (3011) and one group of square rods (3012). Threaded rods are provided at both ends of the square rod (3012), and the square rod (3012) is connected to the circular rod (3011) by screwing the threaded rods into the threaded holes of the circular rod (3011). The two groups of circular rods (3011) respectively pass through the bottom side of the walking frame (3) and are fixed by clamps. The top end of the hanging frame (2012) fixed in the middle of the top of the horizontal plate (201) is inserted into the square rod (3012).

5. A heat treatment device for a suspension leaf spring according to claim 1, characterized in that: Walking wheels are respectively arranged on the inner sides of the two groups of walking frames (3). The walking wheels are attached to the I-shaped structure of the hoisting slide rail (103). A walking motor (302) is further installed on the outer side of one group of walking frames (3). The motor shaft of the walking motor (302) is connected to the walking wheel of this group of walking frames (3).

6. The heat treatment device for a suspension leaf spring according to claim 1, characterized in that: Support frames A (401) are respectively arranged at both ends of the induction heating coil (4). A horizontal strip opening A (402) is arranged on the top side of the induction heating coil (4). The induction heating coil (4) is connected to an external power supply through a cable.

7. A heat treatment device for a suspension leaf spring according to claim 1, characterized in that: Support frames B (701) are respectively arranged at both ends and in the middle of the annular nozzle (7). The middle of the annular nozzle (7) is connected to the water outlet of the injection pump (602) inside the cooling tank (6) through a pipeline. A horizontal strip opening B (702) is arranged on the top side of the annular nozzle (7). Spray holes (703) are arranged inside the annular nozzle (7).

8. A heat treatment device for a suspension leaf spring according to claim 1, characterized in that: A waterproof motor (8) is further arranged inside the cooling tank (6). The waterproof motor (8) is installed on the fixing frame (801). A driving roller B (802) is installed on the motor shaft of the waterproof motor (8). Guide rods (8011) are respectively inserted into both sides of the fixing frame (801). The middle bottom side of the fixing frame (801) is further connected to the telescopic end of the lifting push rod (803). The lifting push rod (803) is installed inside the base (1).

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