A brake shoe shaft automatic quenching equipment

Abstract

The present invention relates to the field of quenching processing, and in particular to an automatic quenching equipment for brake shoe shaft, including a base plate, a quenching box, a partition and a high-frequency heater, etc.; the base plate is fixedly connected to the quenching box; the quenching box is fixedly connected to the partition; a water tank is opened in the partition; a plurality of quenching holes are opened in the partition; each quenching hole is connected to the water tank through a water spray port; and a plurality of high-frequency heaters are installed on the partition. The present invention realizes the joint clamping and fixing of shoe shaft bodies with different sizes by using a clamping plate in conjunction with a limit plate and a top plate, which is convenient for batch quenching processing and improves the quenching processing efficiency. After the shoe shaft body is sprayed with water for quenching, it is inserted into circulating water for uniform cooling, so as to avoid the high-temperature shoe shaft body being directly inserted into the quenching liquid, and the boiling quenching liquid impacting the densely arranged shoe shaft body, which easily makes the fixation of the shoe shaft body fail and the shoe shaft body fall off.

Description

Technical Field

[0001] The invention relates to the field of quenching equipment, and in particular to an automatic quenching equipment for a brake shoe shaft. Background Art

[0002] In the prior art, high-frequency quenching is generally used for quenching shaft parts. According to different processing techniques, there are overall quenching and local quenching. In the overall quenching process, the shafts are generally heated in batches first, and then transferred to the quenching pool for unified quenching. The parts processing efficiency is high. However, during the transfer process of the parts, they may fall and be contaminated. During quenching, the quenching liquid will boil and splash rapidly, causing densely arranged parts to be impacted by the boiling quenching liquid, and the fixation of the parts is prone to failure. The local quenching process generally processes a single part at a time, and the quenching area can be accurately controlled, but the quenching efficiency of the parts is low. Summary of the invention

[0003] The technical problems of the present invention are:

[0004] In order to overcome the shortcomings of the prior art that, in the overall quenching method, the quenching liquid boils and splashes rapidly, causing densely arranged parts to be impacted by the boiling quenching liquid and the fixation of the parts to fail easily, and in the local quenching method, the processing efficiency of the parts is low, the present invention provides an automatic quenching equipment for brake shoe shafts.

[0005] The technical solution is: an automatic quenching equipment for brake shoe shaft, including a base plate and a quenching box; the base plate is fixedly connected to the quenching box; it also includes a partition, a high-frequency heater, a water circulation pump, a power unit, a top plate, a clamping plate and a fastening knob; the quenching box is fixedly connected to the partition; a water tank is opened in the partition; a plurality of quenching holes are opened in the partition; each quenching hole is connected to the water tank through a water spray port; a plurality of high-frequency heaters are installed on the partition; each high-frequency heater corresponds to a quenching hole; the quenching box is installed with a water tank; a plurality of high-frequency heaters are installed on the partition; each high-frequency heater corresponds to a quenching hole; a plurality of high-frequency heaters are installed on the partition; each high-frequency heater corresponds to a quenching hole; a plurality of high-frequency heaters are installed on the quenching box ... Circulation pump; the water circulation pump is connected to the water tank through a water pipe; the partition is connected to a power unit; the power unit is connected to a top plate; the power unit is used to drive the top plate to move in the vertical direction; a number of limit holes Ⅰ are opened on the top plate; a slide groove is opened on the top plate; each limit hole Ⅰ corresponds to a high-frequency heater; the top plate is slidably connected to a card plate; a number of limit holes Ⅱ are opened on the card plate; each limit hole Ⅱ corresponds to a limit hole Ⅰ; a fastening knob is screwed on the left part of the card plate; the fastening knob is rotatably connected to the top plate;

[0006] It also includes a limiting piece; each limiting hole I is provided with a plurality of limiting pieces; the limiting piece is used for limiting the shoe shaft body.

[0007] As a further preferred solution, the power unit includes an electric slide rail and an electric slide sleeve; two electric slide rails are installed on the left and right parts of the partition; each electric slide rail is slidably connected to an electric slide sleeve; and all the electric slide sleeves are fixedly connected to the top plate.

[0008] As a further preferred solution, a sponge filter sleeve is provided at the water inlet pipe of the water circulation pump.

[0009] As a further preferred solution, the limiting plates are arranged on the inner left wall and the inner right wall of the limiting hole I.

[0010] As a further preferred solution, the limiting plate is an arc-shaped plate with an upper portion fixedly connected to the inner wall of the limiting hole I and a lower portion movable.

[0011] As a further preferred scheme, it also includes an electric actuator, a connecting rod, a support plate and a crank tube; two electric actuators are installed in the quenching box; the telescopic parts of all the electric actuators are fixedly connected to the connecting rod; a number of support plates are fixedly connected to the front and rear of the partition; two crank tubes are rotatably connected between two support plates in the same row of front and rear; a torsion spring is provided between the support plate and the crank tube; the connecting rod is in contact with all the crank tubes; the rear parts of the two crank tubes on the same support plate are in an inverted figure eight shape.

[0012] As a further preferred solution, it also includes a main pipe and a branch pipe; the quenching box is equipped with the main pipe; the left and right parts of the main pipe are each connected to a branch pipe; the quenching box is fixedly connected to all the branch pipes; two pressure relief grooves are provided between the partition and the quenching box; a suction port is provided at the lower part of each branch pipe; the suction port of each branch pipe corresponds to the position of a pressure relief groove; a suction port is opened at the lower part of the crankshaft tube; the main pipe is connected to all the crankshaft tubes and is rotatably connected.

[0013] As a further preferred solution, each crank tube is provided with a plurality of curved arcs.

[0014] As a further preferred solution, a fiber filter is provided at the suction port of the crank tube on the side facing the partition.

[0015] The present invention has the following advantages: 1. The present invention realizes the joint clamping and fixing of shoe shaft bodies with different sizes by means of a clamping plate, a limiting plate and a top plate, which is convenient for batch quenching of the shoe shaft bodies and improves the quenching processing efficiency. After the shoe shaft bodies are spray-quenched by water, the shoe shaft bodies are inserted into circulating water for uniform cooling, thereby preventing the high-temperature shoe shaft bodies from being directly inserted into the quenching liquid, causing the quenching liquid to boil rapidly and splash, and the splashing quenching liquid to impact the densely arranged shoe shaft bodies, which can easily cause the fixation of the shoe shaft bodies to fail and cause the shoe shaft bodies to fall off.

[0016] 2. By turning the tightening knob, the fixation of all shoe shaft bodies can be simultaneously loosened, and all shoe shaft bodies can be synchronously separated from the top plate, realizing the rapid collection of the shoe shaft bodies.

[0017] 3. By setting a crankshaft tube with a curved arc, it can not only provide stable support for the shoe shaft body when it is installed and fixed, but also cooperate with the main pipe when the shoe shaft body is quenched. The suction port with a fiber filter at the bottom of the crankshaft tube can extract and filter the white smoke generated by quenching, thereby preventing the white smoke from diffusing into the environment, affecting the cleanliness and visibility of the working environment, and causing harm to the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the brake shoe shaft automatic quenching equipment of the present invention from a first viewing angle;

[0019] Figure 2 A second perspective perspective structural diagram of the automatic quenching equipment for the brake shoe shaft of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation position of the card board of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation position of the limiting piece of the present invention;

[0022] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point A in the middle;

[0023] Figure 6 It is a schematic diagram of the position of the water spray port on the quenching hole of the present invention;

[0024] Figure 7 It is a schematic diagram of the installation position of the crank tube and the branch pipe of the present invention;

[0025] Figure 8 It is a schematic diagram of the matching state of the crank tube and the connecting rod of the present invention.

[0026] Among them: 001- shoe shaft body, 1- base plate, 2- quenching box, 3- partition, 4- high frequency heater, 5- water circulation pump, 6- electric slide rail, 7- electric slide sleeve, 8- top plate, 9- clamping plate, 10- fastening knob, 11- limit plate, 3001- water tank, 3002- quenching hole, 8001- limit hole I, 8002- slide groove, 9001- limit hole II, 101- electric actuator, 102- connecting rod, 103- support plate, 104- crankshaft tube, 201- main pipe, 202- branch pipe, 2001- pressure relief groove. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] A brake shoe shaft automatic quenching equipment, according to Figure 1-Figure 6 As shown, it includes a base plate 1 and a quenching box 2; the base plate 1 is fixedly connected to the quenching box 2;

[0030] It also includes a partition 3, a high-frequency heater 4, a water circulation pump 5, a power unit, a top plate 8, a card plate 9 and a fastening knob 10; the quenching box 2 is bolted with the partition 3; a water tank 3001 is opened in the partition 3; the partition 3 is opened with a plurality of quenching holes 3002; each quenching hole 3002 is connected to the water tank 3001 through a water spray port; the partition 3 is installed with a plurality of high-frequency heaters 4; the high-frequency heater 4 is a high-frequency electromagnetic induction heating coil; each high-frequency heater 4 corresponds to a quenching hole 3002; the quenching box 2 is installed with a water circulation pump 5; the water circulation pump 5 is connected to the water tank 3001 through a water pipe Connected; the partition 3 is connected to a power unit; the power unit is connected to a top plate 8; the power unit is used to drive the top plate 8 to move in the vertical direction; a number of limit holes Ⅰ8001 are opened on the top plate 8; a slide groove 8002 is opened in the middle of the top plate 8; each limit hole Ⅰ8001 corresponds to a high-frequency heater 4; the top plate 8 is slidably connected to a card plate 9; the card plate 9 is located in the slide groove 8002; a number of limit holes Ⅱ9001 are opened on the card plate 9; each limit hole Ⅱ9001 corresponds to a limit hole Ⅰ8001; a fastening knob 10 is screwed on the left part of the card plate 9; the fastening knob 10 is rotatably connected to the top plate 8.

[0031] The power unit includes an electric slide rail 6 and an electric slide sleeve 7; two electric slide rails 6 distributed front and back are installed on the left and right parts of the partition 3; each electric slide rail 6 is slidably connected to an electric slide sleeve 7; all the electric slide sleeves 7 are fixedly connected to the top plate 8.

[0032] A sponge filter sleeve is provided at the water inlet pipe of the water circulation pump 5 .

[0033] It also includes a limiting piece 11; each limiting hole Ⅰ8001 is provided with a plurality of limiting pieces 11; the limiting piece 11 is a spring piece; the limiting piece 11 is used to limit the shoe shaft body 001.

[0034] The limiting piece 11 is arranged on the inner left wall and the inner right wall of the limiting hole Ⅰ8001.

[0035] The limiting piece 11 is an arc-shaped piece whose upper part is welded to the inner wall of the limiting hole Ⅰ8001 and whose lower part is movable.

[0036] The working steps of the above embodiment are:

[0037] Preparation:

[0038] First, pour circulating water into the quenching box 2 to four-fifths of the volume of the quenching box 2, and then the external manipulator draws out the electric sleeve 7 from the upper ends of the four electric slide rails 6 and transfers it to the pad of the workbench, and then the shoe shaft body 001 is transported by the external conveyor belt, and the external manipulator removes the shoe shaft body 001 from the external conveyor belt in turn, and inserts the shoe shaft body 001 into the limiting hole Ⅰ8001 in turn, the shoe shaft body 001 contacts the limiting plate 11 in the limiting hole Ⅰ8001, and the lower end of the shoe shaft body 001 contacts the workbench until all the limiting holes Ⅰ8001 are filled, and the external manipulator turns the tightening knob 10. The tightening knob 10 drives the card plate 9 to move in the slide groove 8002, and the limiting hole II 9001 is misaligned with the limiting hole I 8001. The card plate 9 pushes the shoe shaft body 001, and the limiting piece 11 on the side of the movement direction of the card plate 9 is squeezed. The limiting piece 11 adaptively deforms and fits tightly to the shoe shaft body 001, thereby avoiding the problem that the shoe shaft body 001 with a small diameter cannot be clamped and falls when the sizes of the shoe shaft body 001 are not completely consistent. The card plate 9 cooperates with the top plate 8 and the limiting piece 11 to clamp and fix all the shoe shaft bodies 001 together, which is convenient for batch quenching of the shoe shaft body 001 and improves the quenching efficiency.

[0039] Quenching work:

[0040] The external manipulator clamps the top plate 8 and installs it above all the electric slide rails 6, and then inserts the electric sleeve 7 on the top plate 8 into the corresponding electric slide rails 6 in turn, and then controls the electric sleeve 7 to slowly descend on the electric slide rails 6, synchronously driving the top plate 8 and the shoe shaft body 001 thereon to move downward, and at the same time controls the start of the high-frequency heater 4. When the shoe shaft body 001 penetrates into the high-frequency heater 4, the high-frequency heater 4 heats the shoe shaft body 001 through high-frequency electromagnetic induction. , so that the shoe shaft body 001 heats up quickly, and the water circulation pump 5 is controlled to start, the water circulation pump 5 draws out the circulating water in the quenching box 2 and cools it, and then pumps it into the water tank 3001, and the circulating water is sprayed out from the water spray port in the quenching hole 3002, and the heated shoe shaft body 001 continues to move downward, and the circulating water sprayed from the water spray port quenches the shoe shaft body 001 in time, and as the shoe shaft body 001 continues to descend, the shoe shaft body 001 also extends into The shoe shaft body 001 is further evenly cooled in the circulating water in the quenching box 2. After the shoe shaft body 001 is quickly heated, the heated part of the shoe shaft body 001 is quenched in time, and then the shoe shaft body 001 is inserted into the circulating water for even cooling. The circulating water in the quenching box 2 will not be quickly heated to boiling, causing the shoe shaft body 001 to be impacted by the boiling circulating water and fall off, effectively avoiding the prior art of batch heating of the shoe shaft body 001. After heating, the shoe shaft body 001 needs to be transferred, which reduces the time the shoe shaft body 001 stays in the air and avoids the influence of dust and impurities in the air on the shoe shaft body 001. Then, the shoe shaft body 001 is placed in a quenching pool. After the high-temperature shoe shaft body 001 enters the quenching liquid, the quenching liquid boils and splashes rapidly. The splashing quenching liquid impacts the densely arranged shoe shaft body 001, which easily makes the fixation of the shoe shaft body 001 fail and the shoe shaft body 001 falls off.

[0041] After the shoe shaft body 001 completes high-temperature quenching, impurities such as oxide scale and metal debris that have fallen off will be flushed into the quenching box 2 by the circulating water. Impurities such as oxide scale and metal debris will sink to the bottom of the quenching box 2. The circulating water will be filtered through the sponge filter sleeve at the water inlet of the water circulation pump 5 to prevent impurities from clogging the water spray port in the limiting hole Ⅰ8001, resulting in the local part of the shoe shaft body 001 not being cooled down by the circulating water in time, making the quenching degree of the same horizontal section of the shoe shaft body 001 inconsistent, and the overall performance difference of the shoe shaft body 001.

[0042] After quenching:

[0043] The control starts the electric sleeve 7 to move slowly upward, and simultaneously drives the top plate 8 and the corresponding parts thereon to move upward, until the electric sleeve 7 reaches the initial position, controls the external manipulator to lift the top plate 8 upward, and transfers the top plate 8 to the shoe shaft body 001 collection box, and then controls the manipulator to rotate the tightening knob 10 to make the clamping plate 9 move in the slide groove 8002 until the limit hole II 9001 coincides with the limit hole I 8001, the limit plate 11 is restored, and the shoe shaft body 001 falls from the limit hole I 8001 into the collection box, completing the rapid collection of the shoe shaft body 001.

[0044] Second embodiment

[0045] On the basis of the first embodiment, according to Figure 1-Figure 2 and Figure 7-Figure 8 As shown, it also includes an electric actuator 101, a connecting rod 102, a support plate 103 and a crank tube 104; two electric actuators 101 distributed on the left and right are installed at the rear of the quenching box 2; the electric actuator 101 is an electric push rod; the telescopic parts of all the electric actuators 101 are fixedly connected with the connecting rod 102; a plurality of support plates 103 are bolted to the front and rear of the partition 3; two crank tubes 104 distributed on the left and right are rotatably connected between the two support plates 103 in the same row in front and back; a torsion spring is provided between the support plate 103 and the crank tube 104; the connecting rod 102 is in contact with all the crank tubes 104; the rear parts of the two crank tubes 104 on the same support plate 103 are in an inverted figure eight shape.

[0046] It also includes a main pipe 201 and a branch pipe 202; the main pipe 201 is installed at the front of the quenching box 2; the left and right parts of the main pipe 201 are each connected to a branch pipe 202; the quenching box 2 is fixedly connected to all the branch pipes 202; two pressure relief grooves 2001 distributed on the left and right are arranged between the partition 3 and the quenching box 2; a suction port is arranged at the lower part of each branch pipe 202; the suction port of each branch pipe 202 corresponds to the position of a pressure relief groove 2001; a suction port is opened at the lower part of the crankshaft tube 104; the main pipe 201 is connected to all the crankshaft tubes 104 and is rotatably connected.

[0047] Each crank tube 104 is provided with a plurality of curved arcs.

[0048] A fiber filter is provided at the suction port of the crank tube 104 on the side facing the partition 3 .

[0049] The working steps of the above embodiment are:

[0050] On the basis of the first embodiment, a crank tube 104 with a curved arc is provided on the high frequency heater 4. In the initial state, Figure 7As shown, two adjacent crankshaft tubes 104 are in a vertical state, and the two adjacent crankshaft tubes 104 are parallel to each other. Therefore, there is no need to remove the top plate 8 and then insert the shoe shaft body 001 into the top plate 8. At this time, when the electric sliding sleeve 7 is in the initial position, the external manipulator removes the shoe shaft body 001 on the conveyor belt and inserts it into the limiting hole Ⅰ8001 in sequence. The lower end of the shoe shaft body 001 contacts the highest point of the curved arc of the adjacent crankshaft tube 104, thereby completing the temporary support of the shoe shaft body 001. After all the limiting holes Ⅰ8001 are penetrated by the shoe shaft body 001, the external mechanical The tightening knob 10 is turned by hand to drive the clamping plate 9 to move, and the limiting plate 11 and the top plate 8 are cooperated to complete the fixation of all the shoe shaft bodies 001, which effectively avoids the shoe shaft body 001 from contacting the workbench when the shoe shaft body 001 is installed on the top plate 8, causing impurities on the workbench to adhere to the shoe shaft body 001, and eliminates the need to transfer the fixed shoe shaft body 001 to the high-frequency heater 4 for heating, reducing the possibility of the shoe shaft body 001 falling during the transfer process, and facilitating cooperation with the processing line in the workshop, realizing a high degree of automation, and improving the efficiency of quenching processing.

[0051] Then, the two electric actuators 101 are controlled to contract, and the connecting rods 102 are driven to move downward synchronously. At this time, the connecting rods 102 press the rear parts of all crankshaft tubes 104 downward, and the rear parts of adjacent crankshaft tubes 104 are in an inverted figure eight shape, as shown in FIG. Figure 8 As shown, when the crank tube 104 is pressed downward, the crank tube 104 rotates on the support plate 103, and the torsion spring between the crank tube 104 and the support plate 103 is deformed. As the connecting rod 102 is pressed downward, the curved portions of the adjacent crank tubes 104 are separated to both sides until the gap between the curved portions of the adjacent crank tubes 104 can pass through the shoe shaft body 001, and the crank tube 104 does not contact the shoe shaft body 001. Then, the shoe shaft body 001 is controlled to move downward, and the high-frequency heater 4 quickly heats the shoe shaft body 001. The water spray port of the limit hole Ⅰ8001 sprays circulating water to quench the shoe shaft body 001. Fire, thereby, by setting the crankshaft tube 104, not only can the shoe shaft body 001 be installed and fixed, but also the quenching of the shoe shaft body 001 will not be affected. After the quenching is completed, the shoe shaft body 001 is pulled out from the high-frequency heater 4, and after the shoe shaft body 001 is higher than the initial position of the crankshaft tube 104, the two electric actuators 101 are controlled to extend, and the connecting rod 102 is synchronously driven to move upward. The connecting rod 102 no longer presses down the rear part of the crankshaft tube 104, and the torsion spring between the crankshaft tube 104 and the support plate 103 is restored, and the crankshaft tube 104 is synchronously driven to reset, which is convenient for the next installation and fixation of the shoe shaft body 001.

[0052] Considering that a large amount of white smoke composed of water vapor, metal oxide particles and the like will be generated during the quenching process of the shoe shaft body 001, a main pipe 201 and a branch pipe 202 are added to the quenching box 2, and the main pipe 201 is connected to the corresponding crankshaft pipe 104, and an external air pump is sucked through the main pipe 201, and the shoe shaft body 001 is heated at the high-frequency heater 4, and then a large amount of white smoke generated by quenching is sucked away through the crankshaft pipe 104 with a fiber filter at the bottom, and the fiber filter effectively filters the metal oxide particles in the white smoke to prevent the metal oxide from entering the ventilation system and being deposited on the ventilation duct and the fan blades, resulting in a decrease in ventilation efficiency, and then the filtered white smoke is sucked into the main pipe 201, thereby preventing the white smoke from diffusing into the environment. , affecting the cleanliness and visibility of the working environment. The metal oxide particles and decomposed organic compounds therein also cause harm to the health of the operators, especially long-term exposure of the workers to this environment will lead to respiratory diseases. In addition, after the quenching is completed, the shoe shaft body 001 will be extended into the circulating water for uniform cooling. The shoe shaft body 001 still has a relatively high temperature, which will heat the circulating water, and the circulating water will evaporate. In addition to being discharged from the quenching hole 3002, the water vapor will also be discharged from the pressure relief grooves 2001 on both sides along with the white smoke. At this time, the suction port at the lower part of the branch pipe 202 will draw away the water vapor and white smoke, and then the water vapor will be re-injected into the quenching box 2 after condensation, so as to realize the recycling of the circulating water in the quenching box 2 and prevent the white smoke from entering the environment and polluting the environment.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic quenching device for a brake shoe shaft, comprising a base plate (1) and a quenching box (2); the base plate (1) is fixedly connected to the quenching box (2); the characteristics are: The invention also comprises a partition (3), a high-frequency heater (4), a water circulation pump (5), a power unit, a top plate (8), a clamping plate (9) and a fastening knob (10); the quenching box (2) is fixedly connected with the partition (3); a water tank (3001) is formed in the partition (3); a plurality of quenching holes (3002) are formed in the partition (3); each quenching hole (3002) is connected to the water tank (3001) through a water spray port; a plurality of high-frequency heaters (4) are installed on the partition (3); each high-frequency heater (4) corresponds to a quenching hole (3002); the quenching box (2) is installed with a water circulation pump (5); the water circulation pump (5) is connected to the water tank (3001) through a water pipe ) are connected; the partition (3) is connected to a power unit; the power unit is connected to a top plate (8); the power unit is used to drive the top plate (8) to move in a vertical direction; a plurality of limit holes I (8001) are formed on the top plate (8); a slide groove (8002) is formed on the top plate (8); each limit hole I (8001) corresponds to a high-frequency heater (4); the top plate (8) is slidably connected to a card plate (9); a plurality of limit holes II (9001) are formed on the card plate (9); each limit hole II (9001) corresponds to a limit hole I (8001); a fastening knob (10) is screwed to the left of the card plate (9); the fastening knob (10) is rotatably connected to the top plate (8); It also includes a limiting piece (11); each limiting hole I (8001) is provided with a plurality of limiting pieces (11); the limiting pieces (11) are used to limit the shoe shaft body (001); It also includes an electric actuator (101), a connecting rod (102), a support plate (103) and a crank tube (104); the quenching box (2) is equipped with two electric actuators (101); the telescopic parts of all the electric actuators (101) are fixedly connected to the connecting rod (102); the front and rear parts of the partition plate (3) are respectively fixedly connected to a plurality of support plates (103); two crank tubes (104) are rotatably connected between two support plates (103) in the same front and rear row; a torsion spring is provided between the support plate (103) and the crank tube (104); the connecting rod (102) is in contact with all the crank tubes (104); the rear parts of the two crank tubes (104) on the same support plate (103) are in an inverted figure eight shape; As the connecting rod (102) is pressed downward, the curved portions of adjacent crankshaft tubes (104) are separated to both sides until the gap between the curved portions of adjacent crankshaft tubes (104) can pass through the shoe shaft body (001), and the crankshaft tube (104) is no longer in contact with the shoe shaft body (001). Then, the shoe shaft body (001) is controlled to move downward, and the high-frequency heater (4) quickly heats the shoe shaft body (001).

2. The automatic quenching equipment for brake shoe shaft according to claim 1 is characterized in that: The power unit comprises an electric slide rail (6) and an electric slide sleeve (7); two electric slide rails (6) are respectively installed on the left and right parts of the partition plate (3); each electric slide rail (6) is slidably connected to an electric slide sleeve (7); and all the electric slide sleeves (7) are fixedly connected to the top plate (8).

3. The automatic quenching equipment for brake shoe shaft according to claim 1 is characterized in that: A sponge filter sleeve is provided at the water inlet pipe of the water circulation pump (5).

4. The automatic quenching equipment for brake shoe shaft according to claim 1 is characterized in that: The limiting plates (11) are arranged on the inner left wall and the inner right wall of the limiting hole I (8001).

5. The automatic quenching equipment for brake shoe shaft according to claim 1 is characterized in that: The limiting plate (11) is an arc-shaped plate whose upper part is fixedly connected to the inner wall of the limiting hole I (8001) and whose lower part is movable.

6. The automatic quenching equipment for brake shoe shaft according to claim 5 is characterized in that: It also includes a main pipe (201) and a branch pipe (202); the quenching box (2) is equipped with the main pipe (201); the left and right parts of the main pipe (201) are each connected to a branch pipe (202); the quenching box (2) is fixedly connected to all the branch pipes (202); two pressure relief grooves (2001) are provided between the partition plate (3) and the quenching box (2); a suction port is provided at the lower part of each branch pipe (202); the suction port of each branch pipe (202) corresponds to the position of a pressure relief groove (2001); a suction port is opened at the lower part of the crankshaft tube (104); the main pipe (201) is connected to all the crankshaft tubes (104) and is rotatably connected.

7. The automatic quenching equipment for brake shoe shaft according to claim 6 is characterized in that: Each crank tube (104) is provided with a plurality of curved arcs.

8. The automatic quenching equipment for brake shoe shaft according to claim 7 is characterized in that: A fiber filter is provided at the suction port of the crank tube (104) on the side facing the partition plate (3).

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