Feeding and discharging device for gear heat treatment

Abstract

The utility model discloses a gear heat treatment feeding and discharging device which comprises a rack and a gear tray sliding on the rack, and a push-pull mechanism is further arranged on the rack. The device comprises a pair of rotating shafts rotating on a rack, a worm and gear speed reducing motor driving the rotating shafts to rotate, a pair of chain wheels fixed on the two rotating shafts, a chain sleeving the two chain wheels, a push plate sliding in the middle of the rack and connected with the chain, a hinge shaft rotating on the push plate, and a lever fixed on the hinge shaft, the counter weight dumbbell is fixed to one end of the lever, the Y-shaped connecting arm is fixed to the other end of the lever, the pull rods are fixed to the two ends of the Y-shaped connecting arm, the sliding plates vertically slide on the push plate, the upper sliding columns are fixed to the two ends of the counter weight dumbbell, the sliding grooves are formed in one sides of the sliding plates and are in a barb shape, and the connecting rods are hinged to the tops of the two sliding plates. The U-shaped frame is fixed to one ends of the two connecting rods, and the overturning plates are fixed to the two ends of the U-shaped frame. The feeding and discharging device has the advantage of being safe and rapid in feeding and discharging.

Description

Technical Field

[0001] The utility model relates to the technical field of gear heat treatment processing, in particular to a gear heat treatment loading and unloading device. Background Technique

[0002] Gears are one of the most important parts in mechanical transmission, and their performance and service life directly affect the operation quality and efficiency of mechanical equipment. The heat treatment process of gears is a key step to improve their hardness and wear resistance, and is of great significance for the manufacture and use of gears. At present, gear heat treatment often requires a heating furnace for heating and heat preservation. Before and after gear heating, special trays and baskets filled with gears are usually manually pushed and pulled in and out of the heating furnace for loading and unloading. This loading and unloading process not only has a large labor intensity and low safety, but also takes a long time and has low efficiency. Although there are mechanical structures in the prior art that can push and pull trays and baskets in and out of the heating furnace to solve this problem, when actually pulling out the trays and baskets from the heating furnace, it is still necessary for workers to hang hooks on the hanging rings or holes of the trays and baskets in the furnace, resulting in not high safety. Content of the Utility Model

[0003] The purpose of the utility model is to provide a gear heat treatment loading and unloading device, which has the effect of safe and fast loading and unloading.

[0004] The above technical object of the utility model is achieved by the following technical solutions: A gear heat treatment loading and unloading device, including a frame, a gear tray that slides on the frame and has a net-shaped middle part. A push-pull mechanism for pushing or pulling the gear tray to slide is arranged on the frame. The push-pull mechanism includes a pair of rotating shafts that are parallel to each other and rotate on the frame, a worm and gear reduction motor that is fixedly installed on the frame and drives one of the rotating shafts to rotate, a pair of sprockets that are respectively fixedly installed on the two rotating shafts, a chain sleeved on the two sprockets, a push plate that horizontally slides in the middle of the frame and is fixedly connected to the chain, a hinge shaft rotatably installed on the push plate, a lever fixed to the hinge shaft and with the hinge shaft as the fulcrum, a counterweight dumbbell fixed to one end of the lever, a Y-shaped connecting arm fixed to the other end of the lever, a pair of pull rods respectively fixed to the two ends of the Y-shaped connecting arm away from the turning rod, a pair of sliding plates that vertically slide on the push plate and are respectively located at both ends of the counterweight dumbbell, sliding columns fixed to both ends of the counterweight dumbbell, inverted hook-shaped chutes opened on one side of the sliding plate for the sliding columns to extend into and slide, a pair of connecting rods respectively hinged to the tops of the two sliding plates, a U-shaped frame fixedly connected to one end of the two connecting rods, and turning plates fixed to both ends of the U-shaped frame and parallel to the sliding plates. One side of the push plate and one side of the gear tray can be in parallel contact, and the height of the push plate does not exceed the height of the rack tray. When the connecting rod and the U-shaped frame are turned to a certain angle position, the two adjacent sides of the turning plate can be respectively in parallel contact with the top of the push plate and one side of the gear tray, and at this time, there is a parallel interval between one side of the push plate and one side of the gear tray. The Y-shaped connecting arm is located above the gear tray, and the lower ends of the pull rods connected to its two ends are directly opposite the middle grid of the gear tray.

[0005] The further setting of the utility model is: An I-shaped guide rail is fixedly arranged in parallel at the middle part of the chain on the frame. The bottom of the push plate is fixedly connected with a U-shaped plate that is buckled and slides on the I-shaped guide rail. A groove for the chain to pass through is opened at the inner top of the U-shaped plate, and the chain is fixedly connected to the side wall of the groove. A pair of rollers that roll in the grooves on both sides of the I-shaped guide rail are respectively rotatably installed on both inner sides of the U-shaped plate.

[0006] The further setting of the utility model is: A pair of T-shaped guide rails are fixedly arranged on the top of the push plate and are respectively located beside both ends of the dumbbell. T-shaped grooves for slidingly connecting the T-shaped guide rails are opened at the bottom of the sliding plate.

[0007] The further setting of the utility model is: A pair of vertically spaced support plates are respectively fixedly arranged on both sides of the chain on the frame, and a plurality of guide wheels for supporting the sliding of the gear tray are respectively rotatably installed between each pair of support plates. The tops of the two support plates on the frame close to the chain are lower than the guide wheels, and the tops of the two support plates away from the chain are higher than the guide wheels, and a directional guide plate is vertically and fixedly connected.

[0008] The utility model is further configured as follows: a pair of limit rods are fixedly arranged on the frame on the side of the push plate facing away from the gear tray, the limit rod is close to a sprocket, and a push rod is fixedly arranged on the side facing the push plate, the push rod is located above the push plate and directly opposite to one end of the slide plate.

[0009] The beneficial effects of the utility model are:

[0010] By adopting the above technical solution, when the gear tray needs to be pushed into the heating furnace, the worm gear reduction motor is first started to drive the rotating shaft, so that the sprocket on the rotating shaft drives the chain to move, and then the U-shaped plate connected to the chain will drive the U-shaped plate and the push plate to slide along the I-shaped guide rail in the direction close to the gear tray under the movement of the chain. After one side of the push plate is in parallel contact with one side of the gear tray, the gear tray will also slide along the direction of the rack box heating furnace under the push of the push plate, and until it enters the heating furnace, finally the worm gear reduction motor is started to reversely drive the rotating shaft, so that the push plate leaves the heating furnace in the direction away from the gear tray, thus realizing automatic loading of the gear;

[0011] When the gear tray in the heating furnace needs to be pulled out, first manually turn the top connecting rod and the U-shaped frame of the slide plate to rotate outside the furnace, so that one side of the flip plate contacts the top of the push plate, and then start the worm gear reduction motor to drive the rotating shaft to make the push plate enter the furnace and approach one side of the gear tray. Because the other side of the flip plate contacts the gear tray, one side of the push plate and one side of the gear tray are parallel to each other. Therefore, when the push plate continues to move closer to one side of the gear tray, the flip plate will push the slide plate in the opposite direction to slide backward relative to the push plate. Because the sliding columns at both ends of the counterweight dumbbell slide in the hook-shaped slide grooves of the two slide plates respectively, during the sliding process of the slide plate relative to the push plate, the sliding columns will slide relatively in the slide grooves and lift the counterweight dumbbell corresponding to the shape of the slide groove. At the same time, the other side of the lever The Y-shaped connecting arm at the end will move downward from the initial height, and the pull rods at both ends of the Y-shaped connecting arm will extend into the grid of the gear tray, so as to realize the automatic connection between the push plate and the gear tray, and then start the worm gear reduction motor to reversely drive the rotating shaft, and the push plate will pull the gear tray out of the heating furnace through the pull rod, and at the same time approach the limit rod on the frame, that is, to realize the automatic unloading of the gear. Finally, after the push plate and the gear tray come out of the heating furnace, immediately manually move the connecting rod and the U-shaped frame to restore their original state. When the push plate is completely close to and contacts one side of the limit plate, the push rod will push the two slides on the push plate back to their initial positions, so that the counterweight dumbbells at both ends of the lever fall down and the Y-shaped connecting arm lifts the pull rod, so as to achieve the effect of releasing the connection between the push plate and the gear tray.

[0012] Among them, the inverted hook-shaped sliding groove can, after the sliding column slides past the top end, utilize the gravity of the counterweight dumbbell to lock the relative positions of the sliding plate and the pushing plate to a certain extent, so as to prevent the sliding plate from sliding relative to the pushing plate due to inertia or external influence during the process of pulling out the gear tray, thereby causing problems such as the premature falling of the counterweight dumbbell, the premature lifting of the Y-shaped connecting arm and the pull rod; the T-shaped groove at the bottom of the sliding plate and the T-shaped guide rail at the top of the pushing plate can effectively ensure the stable sliding of the sliding plate; the support plate, the guide wheel and the directional guide plate can ensure the stable sliding of the gear tray on the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 is a schematic diagram of the push-pull mechanism in this embodiment pushing the gear tray to work;

[0015] Figure 2 is a schematic diagram of the push-pull mechanism in this embodiment pulling the gear tray to work;

[0016] Figure 3 is Figure 2 an enlarged view of part A of

[0017] Figure 4 is a schematic diagram of the connection relationship between the pushing plate, the rack and the I-shaped guide rail in this embodiment;

[0018] In the figure, 1, rack; 2, gear tray; 3, push-pull mechanism; 31, rotating shaft; 32, worm and worm gear reduction motor; 33, sprocket; 34, chain; 35, pushing plate; 351, T-shaped guide rail; 36, hinge shaft; 37, lever; 371, counterweight dumbbell; 371a, sliding column; 372, Y-shaped connecting arm; 372a, pull rod; 38, sliding plate; 381, T-shaped groove; 382, sliding groove; 39, connecting rod; 391, U-shaped frame; 392, turning plate; 4, I-shaped guide rail; 5, U-shaped plate; 51, groove; 52, roller; 6, support plate; 61, guide wheel; 62, directional guide plate; 7, limiting rod; 71, ejector rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment: A gear heat treatment loading and unloading device, as Figure 1 , Figure 2 shown, includes a frame 1, a gear tray 2 that slides on the frame 1 and has a mesh in the middle. A push-pull mechanism 3 for pushing or pulling the gear tray 2 to slide is provided on the frame 1. The push-pull mechanism 3 includes a pair of rotating shafts 31 that are parallel to each other and rotate on the frame 1, a worm and gear reduction motor 32 that is fixedly installed on the frame 1 and drives one of the rotating shafts 31 to rotate, a pair of sprockets 33 that are respectively fixedly installed on the two rotating shafts 31, a chain 34 sleeved on the two sprockets 33, a push plate 35 that horizontally slides in the middle of the frame 1 and is fixedly connected to the chain 34, a hinge shaft 36 that is rotatably installed on the push plate 35, a lever 37 that is fixed on the hinge shaft 36 and takes the hinge shaft 36 as a fulcrum, a counterweight dumbbell 371 fixed at one end of the lever 37, a Y-shaped connecting arm 372 fixed at the other end of the lever 37, a pair of pull rods 372a respectively fixed at the two ends of the Y-shaped connecting arm 372 away from the flipping rod, a pair of sliding plates 38 that vertically slide on the push plate 35 and are respectively located at both ends of the counterweight dumbbell 371, upper sliding columns 371a fixed at both ends of the counterweight dumbbell 371, inverted hook-shaped chutes 382 opened on one side of the sliding plate 38 for the sliding columns 371a to extend into and slide, a pair of connecting rods 39 respectively hinged to the tops of the two sliding plates 38, a U-shaped frame 391U fixed to one end of the two connecting rods 39, and flipping plates 392 fixed at both ends of the U-shaped frame 391U and parallel to the sliding plates 38. One side of the push plate 35 and one side of the gear tray 2 can be in parallel contact, and the height of the push plate 35 does not exceed the height of the rack tray. When the connecting rod 39 and the U-shaped frame 391U are flipped to a certain angle position, the two adjacent sides of the flipping plate 392 can respectively be in parallel contact with the top of the push plate 35 and one side of the gear tray 2, and at this time, there is a parallel interval between one side of the push plate 35 and one side of the gear tray 2. The Y-shaped connecting arm 372 is located above the gear tray 2, and the lower ends of the pull rods 372a connected to its two ends are directly opposite to the middle grid of the gear tray 2.

[0021] As Figure 2 , Figure 4As shown, the frame 1 is located in the middle of the chain 34 and is fixedly provided with an I-shaped guide rail 4 in parallel. The bottom of the push plate 35 is fixedly connected with a U-shaped plate 5 that slides on the I-shaped guide rail 4. The inner top of the U-shaped plate 5 is provided with a groove 51 for the chain 34 to pass through, and the chain 34 is fixedly connected to the side wall of the groove 51. A pair of rollers 52 that roll on the grooves on both sides of the I-shaped guide rail 4 are rotatably installed on both sides of the U-shaped plate 5; a pair of T-shaped guide rails 351 located at the two ends of the dumbbell are fixedly provided on the top of the push plate 35, and a T-shaped groove 381 that is slidably connected to the T-shaped guide rail 351 is provided at the bottom of the slide plate 38.

[0022] like Figure 1 , Figure 2 As shown, the frame 1 is fixedly provided with a pair of vertically spaced support plates 6 on both sides of the chain 34, and a plurality of guide wheels 61 for supporting the sliding of the gear tray 2 are rotatably installed between each pair of support plates 6. The tops of the two support plates 6 close to the chain 34 on the frame 1 are lower than the guide wheels 61, and the tops of the two support plates 6 away from the chain 34 are higher than the guide wheels 61, and are vertically fixedly connected to the directional guide plate 62; the frame 1 is fixedly provided with a pair of limit rods 7 on the side of the push plate 35 facing away from the gear tray 2, the limit rod 7 is close to a sprocket 33, and a push rod 71 is fixedly provided on the side facing the push plate 35, and the push rod 71 is located above the push plate 35 and is directly opposite to one end of the slide plate 38.

[0023] The working principle of this embodiment:

[0024] When the gear tray 2 needs to be pushed into the heating furnace, the worm gear reduction motor 32 is first started to drive the rotating shaft 31, so that the sprocket 33 on the rotating shaft 31 drives the chain 34 to move, and then the U-shaped plate 5 connected to the chain 34 will drive the U-shaped plate 5 and the push plate 35 to slide along the I-shaped guide rail 4 in the direction close to the gear tray 2 under the movement of the chain 34. After one side of the push plate 35 is in parallel contact with one side of the gear tray 2, the gear tray 2 will also slide along the direction of the heating furnace of the frame 1 under the push of the push plate 35, and until it enters the heating furnace, finally the worm gear reduction motor 32 is started to reversely drive the rotating shaft 31, so that the push plate 35 leaves the heating furnace in the direction away from the gear tray 2, that is, the automatic loading of the gear is realized;

[0025] When it is necessary to pull out the gear tray 2 in the heating furnace, first manually move the connecting rod 39 at the top of the slide plate 38 and the U-shaped frame 391U outside the furnace to rotate, so that one side of the turning plate 392 contacts the top of the push plate 35. Then start the worm and worm gear reduction motor 32 to drive the rotating shaft, so that the push plate 35 enters the furnace and approaches one side of the gear tray 2. Since the other side of the turning plate 392 contacts the gear tray 2, and there is a parallel interval between one side of the push plate 35 and one side of the gear tray 2, when the push plate 35 continues to move closer to one side of the gear tray 2, the turning plate 392 will push the slide plate 38 to slide backward relative to the push plate 35. Also, since the sliding columns 371a at both ends of the counterweight dumbbell 371 slide in the inverted hook-shaped sliding grooves 382 of the two slide plates 38 respectively, during the backward sliding of the slide plate 38 relative to the push plate 35, the sliding columns 371a will slide in the sliding grooves 382 correspondingly and lift the counterweight dumbbell 371 according to the shape of the sliding grooves 382. At the same time, the Y-shaped connecting arm 372 at the other end of the lever 37 will move downward from the initial height, and the pull rods 372a at both ends of the Y-shaped connecting arm 372 will extend into the grid of the gear tray 2, so as to realize the automatic connection between the push plate 35 and the gear tray 2. Then start the worm and worm gear reduction motor 32 to drive the rotating shaft 31 in the reverse direction, and the push plate 35 will pull out the gear tray 2 from the heating furnace through the pull rods 372a, and at the same time approach the limit rod 7 on the frame 1, that is, realize the automatic blanking of the gear. Finally, after the push plate 35 and the gear tray 2 come out of the heating furnace, immediately manually move the connecting rod 39 and the U-shaped frame 391U back to the original state. When the push plate 35 is completely close to and contacts one side of the limit plate, the ejector rod 71 will relatively push the two slide plates 38 on the push plate 35 back to the initial position, so that the counterweight dumbbells 371 at both ends of the lever 37 fall, and the Y-shaped connecting arm 372 lifts the pull rods 372a, so as to achieve the effect of releasing the connection between the push plate 35 and the gear tray 2.

[0026] Among them, the inverted hook-shaped sliding groove 382 can, after the sliding column 371a slides over the top, borrow the gravity of the counterweight dumbbell 371 to lock the relative positions of the slide plate 38 and the push plate 35 to a certain extent, so as to prevent the slide plate 38 from sliding relative to the push plate 35 due to inertia or external influence during the process of pulling out the gear tray 2, thus causing problems such as the premature falling of the counterweight dumbbell 371, the premature lifting of the Y-shaped connecting arm 372 and the pull rods 372a; the T-shaped groove 381 at the bottom of the slide plate 38 and the T-shaped guide rail at the top of the push plate 35 can effectively ensure the stable sliding of the slide plate 38; the support plate 6, the guide wheel 61 and the directional guide plate 62 can ensure the stable sliding of the gear tray 2 on the frame 1.

Claims

1. A gear heat treatment loading and unloading device, comprising a frame (1) and a gear tray (2) that slides on the frame (1) and has a mesh in the middle, characterized in that, A push-pull mechanism (3) for pushing or pulling the gear tray (2) to slide is provided on the frame (1). The push-pull mechanism (3) includes a pair of rotating shafts (31) that are parallel to each other and rotate on the frame (1), a worm and gear reduction motor (32) fixedly installed on the frame (1) and driving one of the rotating shafts (31) to rotate, a pair of sprockets (33) respectively fixedly installed on the two rotating shafts (31), a chain (34) sleeved on the two sprockets (33), a push plate (35) horizontally sliding in the middle of the frame (1) and fixedly connected to the chain (34), a hinge shaft (36) rotatably installed on the push plate (35), a lever (37) fixed to the hinge shaft (36) and pivoting around the hinge shaft (36), a counterweight dumbbell (371) fixed to one end of the lever (37), a Y-shaped connecting arm (372) fixed to the other end of the lever (37), a pair of pull rods (372a) respectively fixed to the two ends of the Y-shaped connecting arm (372) away from the turning rod, a pair of sliding plates (38) vertically sliding on the push plate (35) and located at both ends of the counterweight dumbbell (371), sliding columns (371a) fixed to both ends of the counterweight dumbbell (371), an inverted hook-shaped chute (382) opened on one side of the sliding plate (38) for the sliding columns (371a) to extend into and slide, a pair of connecting rods (39) respectively hinged to the tops of the two sliding plates (38), a U-shaped frame (391U) fixedly connected to one end of the two connecting rods (39), and turning plates (392) fixed to both ends of the U-shaped frame (391U) and parallel to the sliding plates (38). One side of the push plate (35) and one side of the gear tray (2) can be in parallel contact, and the height of the push plate (35) does not exceed the height of the rack tray. When the connecting rod (39) and the U-shaped frame (391U) are turned to a certain angular position, the two adjacent sides of the turning plate (392) can respectively be in parallel contact with the top of the push plate (35) and one side of the gear tray (2), and at this time, there is a parallel gap between one side of the push plate (35) and one side of the gear tray (2). The Y-shaped connecting arm (372) is located above the gear tray (2), and the lower ends of the pull rods (372a) connected to its two ends are directly opposite the middle grid of the gear tray (2).

2. The feeding and discharging device for gear heat treatment according to claim 1, characterized in that: An I-shaped guide rail (4) is fixedly arranged in parallel at the middle of the chain (34) on the frame (1). A U-shaped plate (5) that is buckled and slides on the I-shaped guide rail (4) is fixedly connected to the bottom of the push plate (35). A groove (51) for the chain (34) to pass through is opened on the inner top of the U-shaped plate (5), and the chain (34) is fixedly connected to the side wall of the groove (51). A pair of rollers (52) that roll on the two side grooves of the I-shaped guide rail (4) are respectively rotatably installed on the two inner sides of the U-shaped plate (5).

3. A gear heat treatment loading and unloading device according to claim 1, characterized in that: A pair of T-shaped guide rails (351) are fixedly arranged on the top of the push plate (35) respectively beside the two ends of the dumbbell. A T-shaped groove (381) for slidingly connecting the T-shaped guide rail (351) is opened at the bottom of the sliding plate (38).

4. A gear heat treatment loading and unloading device according to claim 1, characterized in that: On both sides of the chain (34), a pair of vertically spaced support plates (6) are fixedly arranged on the frame (1), and a plurality of guide wheels (61) for sliding the support gear trays (2) are rotatably installed between each pair of support plates (6). The tops of the two support plates (6) on the frame (1) close to the chain (34) are lower than the guide wheels (61), and the tops of the two support plates (6) far from the chain (34) are higher than the guide wheels (61), and a directional guide plate (62) is fixedly connected vertically.

5. A gear heat treatment loading and unloading device according to claim 1, characterized in that: On the side of the frame (1) opposite to the gear tray (2) of the push plate (35), a pair of limit rods (7) are fixedly arranged. The limit rods (7) are close to a sprocket (33), and a top rod (71) is fixedly arranged on the side facing the push plate (35). The top rod (71) is located above the push plate (35) and is directly opposite to one end of the slide plate (38).

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