Hoisting tool for charging bucket lip plate tray

Abstract

The invention belongs to the field of heat treatment equipment, and particularly relates to a charging and hoisting tool for a bucket lip plate tray, which comprises a charging tray, the charging tray is positioned above a trolley, the charging tray comprises a transverse plate and a plurality of vertical plates, the vertical plates are fixed above the transverse plate, the transverse plate and the vertical plates are provided with uniformly distributed meshes, and the transverse plate and the vertical plates are fixed on the trolley. A hoisting assembly is arranged above the furnace loading tray and comprises a top plate, four supporting legs and four positioning rods, a plurality of through grooves which are uniformly distributed are formed in the top plate, the four supporting legs are fixed below the top plate, the four positioning rods and the supporting legs are coaxially arranged, limiting holes matched with the positioning rods are formed in the bottoms of the supporting legs, and the limiting holes are matched with the positioning rods. And the positioning rods are inserted into the limiting holes. According to the method, the bucket lip plates are laterally and vertically arranged in the furnace, deformation and warping in the heat treatment process can be reduced, the size and shape of the bucket lip plates subjected to heat treatment are more stable, heat treatment can be conducted on the multiple bucket lip plates at the same time, and the heat treatment efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of heat treatment equipment, and in particular relates to a tooling for loading a bucket lip plate tray into a furnace and lifting it. Background Art

[0002] The bucket lip is a part of the bucket of a loader or excavator, and its main function is to protect the bucket edge and enhance the bucket's durability. In engineering fields such as mining, construction, and highways, the bucket lip needs to withstand alternating impact loads and is an indispensable and important component of the bucket. With the rapid development of industries such as mining and construction, the market demand for bucket lip is growing. At the same time, with the continuous advancement of technology and the intensification of market competition, the performance and quality of bucket lip are also constantly improving.

[0003] Heat treatment is a crucial step in the production of bucket lip plates. The effect of heat treatment is directly related to the wear resistance, impact resistance and corrosion resistance of the bucket lip plates. Heat treatment can also improve the dimensional stability of the bucket lip plates. Therefore, it is particularly important to design a heat treatment tray dedicated to the bucket lip plates.

[0004] The existing bucket lip plate furnace tray still has the following shortcomings:

[0005] 1. When the existing bucket lip plate is loaded into the furnace tray for heat treatment, the bucket lip plate is placed flat on the tray and sent into the heat treatment furnace for heat treatment. Since the bucket lip plate usually has a large surface area and a certain thickness, placing the bucket lip plate flat will cause insufficient or overheating of some areas, affecting the heat treatment effect.

[0006] 2. When the existing bucket lip plate loading tray is heat treated, only one bucket lip plate can be heat treated at a time, and the heat treatment efficiency is low.

[0007] 3. When the existing bucket lip plate loading pallet is quenched and cooled, it is hung on the pallet's lifting ears for lifting. When the pallet and the bucket lip plate are just out of the furnace, the temperature of the pallet and the bucket lip plate is high, and there is a great safety hazard for the staff hanging the lifting rope. In addition, it takes a certain amount of time to hang the lifting rope, which prolongs the time for the bucket lip plate to enter the cooling pool after it is out of the furnace, causing the bucket lip plate temperature to drop significantly, affecting the quality of heat treatment.

[0008] 4. When the existing bucket lip plate loading tray is quenching and cooling the bucket lip plate, the bottom of the bucket lip plate contacts the coolant first, resulting in inconsistent cooling degrees between the top and bottom of the bucket lip plate, affecting the heat treatment effect. Summary of the invention

[0009] The purpose of the present invention is to provide a tool for loading and lifting bucket lip plate pallets into a furnace in response to the problems raised in the above background technology.

[0010] To achieve the above object, the present invention adopts the following technical solutions: a tool for loading and lifting bucket lip plate pallet into a furnace, comprising:

[0011] The furnace loading tray is located above the trolley and comprises a horizontal plate and a plurality of vertical plates, wherein the vertical plates are fixed above the horizontal plates, and the horizontal plates and the vertical plates are both provided with evenly distributed mesh holes.

[0012] Furthermore, a lifting assembly is provided above the furnace loading tray, and the lifting assembly comprises:

[0013] A top plate, wherein a plurality of evenly distributed through grooves are formed on the top plate;

[0014] Support legs, the support legs are four and fixed below the top plate;

[0015] There are four positioning rods, which are coaxially arranged with the supporting legs.

[0016] Furthermore, a limiting hole adapted to the positioning rod is provided at the bottom of the supporting leg, and the positioning rod is inserted into the limiting hole.

[0017] Furthermore, two first plug rods and two second plug rods are fixed on the furnace loading tray, and the first plug rods and the second plug rods are both provided with plug holes. The height of the first plug rod is lower than that of the second plug rod, and the first plug rod is located on the side away from the heat treatment furnace.

[0018] Furthermore, two first plug plates and two second plug plates are fixed under the top plate, the distance between the first plug plate and the second plug plate is equal to the distance between the first plug rod and the second plug rod, the first plug plate is located on the side away from the heat treatment furnace, the height of the bottom end of the second plug plate is higher than the height of the top end of the first plug rod, and the first plug plate and the second plug plate are both provided with card blocks adapted to the sockets.

[0019] Furthermore, a rectangular groove is provided on the clamping block, a wedge-shaped block is provided in the rectangular groove, a first spring is provided at the bottom of the wedge-shaped block, and two ends of the first spring are respectively fixed to the wedge-shaped block and the rectangular groove.

[0020] Furthermore, the lifting assembly also includes a support frame fixed on the top plate, the support frame is slidably connected with a lifting ear, the lifting ear is sleeved with a second spring, a movable rod is fixed to the bottom end of the lifting ear, and the movable rod is slidably connected to the support frame.

[0021] Furthermore, a spray assembly is provided on the top plate, and the spray assembly includes two racks fixed on the movable rod, a rotating shaft is rotatably connected to the support frame, column gears meshing with the racks are fixed at both ends of the rotating shaft, eccentric wheels are fixed at both ends of the rotating shaft, an annular groove is provided on the eccentric wheel, two piston cylinders are fixed on the top plate, a piston plate is sealingly and slidably connected in the piston cylinder, a piston rod is fixed on the piston plate, a limiting rod is fixed on the top end of the piston rod, the limiting rod is slidably connected in the annular groove, and a water inlet pipe and a water outlet pipe are connected to the piston cylinder.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. The present invention sets a vertical plate and fixes the bucket lip plate sideways between two vertical plates during heat treatment, so that the bucket lip plate is heated more evenly, which is beneficial to reduce deformation and warping during the heat treatment process, makes the size and shape of the bucket lip plate after heat treatment more stable, and has a good heat treatment effect.

[0024] 2. The present invention provides a plurality of vertical plates, so that a plurality of bucket lip plates can be heat treated simultaneously, which greatly improves the heat treatment efficiency.

[0025] 3. The present invention sets a lifting assembly. After the bucket lip plate is loaded into the furnace, the legs are plugged into the limit rods. After the heat treatment is completed, the tray follows the trolley out of the furnace. After the tray is out of the furnace, it is automatically connected to the lifting assembly. The bucket lip plate can be lifted after it is out of the furnace. There is no need to manually hang the lifting rope, which reduces the safety hazard of the staff. At the same time, it shortens the time for the bucket lip plate to enter the cooling pool after it is out of the furnace, which is beneficial to improving the quality of heat treatment.

[0026] 4. The present invention provides a spray assembly, and when the crane lifts the furnace loading tray, the lifting ear will move up relative to the support frame and compress the second spring. When the crane lowers the furnace loading tray, the bottom of the furnace loading tray will be additionally affected by the resistance of the water when it contacts the coolant, slowing down the speed of the tray moving down. Under the action of the second spring, the lifting ear moves down relative to the support frame and drives the rack to move down, thereby driving the gear column gear and the rotating shaft to rotate, and under the action of the eccentric wheel, the piston plate is driven to move up and down reciprocatingly, so that the coolant is sucked into the piston cylinder and then sprayed to the bucket lip plate by the spray head, so that the part of the bucket lip plate immersed in the coolant and the part above the coolant are cooled at the same time, thereby improving the heat treatment effect. After the bucket lip plate is completely immersed in the coolant, the crane stops lowering the furnace loading tray, and the furnace loading tray moves down relative to the lifting ear under the action of gravity, and continues to drive the rotating shaft to rotate. At this time, the piston cylinder absorbs the coolant to stir the coolant flow, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a tooling for loading and lifting bucket lip plate pallets into a furnace provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of a furnace loading pallet for bucket lip plate pallet loading and lifting tooling provided by the present invention;

[0029] Figure 3 It is a structural schematic diagram of a lifting assembly for a bucket lip plate pallet loading furnace lifting tool provided by the present invention;

[0030] Figure 4 It is a schematic diagram of a first plug plate and a first plug rod clamping structure for a bucket lip plate pallet loading furnace lifting tool provided by the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of a spray assembly for a bucket lip plate pallet loading furnace lifting tool provided by the present invention;

[0032] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0033] Figure 7 The present invention provides a schematic diagram of the internal structure of a piston cylinder for a bucket lip plate pallet loading and lifting tool.

[0034] In the figure, 1 is a workbench, 2 is a heat treatment furnace, 3 is a trolley, 4 is a furnace loading tray, 41 is a horizontal plate, 42 is a vertical plate, 43 is a mesh, 44 is a first plug rod, 45 is a second plug rod, and 46 is a plug hole;

[0035] 5 top plate, 51 through slot, 52 supporting leg, 521 limiting hole, 53 supporting frame, 54 first plug plate, 55 second plug plate, 56 block, 561 rectangular slot, 562 wedge block, 563 first spring, 531 lifting ear, 532 second spring, 533 movable rod;

[0036] 6 positioning rod;

[0037] 71 rack, 72 rotating shaft, 73 column gear, 74 eccentric wheel, 741 annular groove, 75 piston cylinder, 751 piston plate, 752 piston rod, 753 limiting rod, 754 water inlet pipe, 755 water outlet pipe. DETAILED DESCRIPTION

[0038] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0039] like Figure 1-Figure 7 As shown, a tool for lifting and transporting bucket lip plate pallets for loading furnaces comprises:

[0040] The furnace loading tray 4 is located above the trolley 3, and a pad is provided between the furnace loading tray 4 and the trolley 3. The furnace loading tray 4 includes a horizontal plate 41 and a plurality of vertical plates 42. The vertical plates 42 are fixed above the horizontal plate 41. The horizontal plate 41 and the vertical plates 42 are both provided with evenly distributed mesh holes 43. In this embodiment, the mesh holes 43 are square holes. During specific operation, the lip plate is fixed to the furnace loading tray 4, and the furnace loading tray 4 is moved into the heat treatment furnace 2 by the trolley 3.

[0041] A lifting assembly is provided above the workbench 1, and the lifting assembly comprises:

[0042] A top plate 5, wherein a plurality of evenly distributed through slots 51 are formed on the top plate 5;

[0043] Support legs 52, which are four in number and fixed below the top plate 5;

[0044] There are four positioning rods 6 , which are coaxially arranged with the supporting legs 52 .

[0045] A limiting hole 521 adapted to the positioning rod 6 is formed at the bottom of the supporting leg 52 , and the positioning rod 6 is inserted into the limiting hole 521 .

[0046] Two first plug rods 44 and two second plug rods 45 are fixed on the furnace loading tray 4, and the first plug rods 44 and the second plug rods 45 are both provided with plug holes 46, the height of the first plug rod 44 is lower than the height of the second plug rod 45, and the first plug rod 44 is located on the side away from the heat treatment furnace 2, and two first plug plates 54 and two second plug plates 55 are fixed below the top plate 5, and the distance between the first plug plate 54 and the second plug plate 55 is equal to the distance between the first plug rod 44 and the second plug rod 45, and the first plug plate 54 is located on the side away from the heat treatment furnace 2, and the height of the bottom end of the second plug plate 55 is higher than the height of the top end of the first plug rod 44, and the first plug plate 54 and the second plug plate 55 are both provided with a card block 56 adapted to the plug hole 46, and a rectangular groove 561 is provided on the card block 56, and a wedge block 562 is provided in the rectangular groove 561, and a first spring 563 is provided at the bottom of the wedge block 562, and the two ends of the first spring 563 are respectively fixed on the wedge block 562 and the rectangular groove 561;

[0047] When loading the bucket lip plate into the furnace, first lift the lifting assembly from above the furnace loading tray 4, and fix the bucket lip plate on its side between the two vertical plates 42. In this embodiment, there are four vertical plates 42, and the two bucket lip plates can be heat treated at the same time (the bucket lip plate is not fixed between the two middle vertical plates 42 for ventilation). After the bucket lip plate is fixed, the furnace loading tray 4 is moved into the heat treatment furnace 2 by the trolley 3, and then the lifting assembly is lifted back. After the heat treatment is completed, the furnace loading tray 4 follows the trolley 3 out of the furnace, and the furnace loading tray 4 is automatically connected to the lifting assembly after coming out of the furnace.

[0048] The lifting assembly further comprises a support frame 53 fixed on the top plate 5, a lifting ear 531 is slidably connected to the support frame 53, a second spring 532 is sleeved on the lifting ear 531, a movable rod 533 is fixed to the bottom end of the lifting ear 531, and the movable rod 533 is slidably connected to the support frame 53;

[0049] When the bucket lip is quenched and cooled, the crane hooks the lifting ear 531 and moves up to compress the spring 532. Then the lifting ear 531 drives the furnace loading tray 4 and the bucket lip to move up. After the furnace loading tray 4 moves to the top of the cooling pool, the crane lowers the furnace loading tray 4 to immerse the bucket lip in the cooling pool for cooling.

[0050] The top plate 5 is provided with a spray assembly, which includes two racks 71 fixed on the movable rod 533, a rotating shaft 72 is rotatably connected to the support frame 53, and column gears 73 meshing with the racks 71 are fixed at both ends of the rotating shaft 72, and eccentric wheels 74 are fixed at both ends of the rotating shaft 72, and an annular groove 741 is provided on the eccentric wheel 74, and two piston cylinders 75 are fixed on the top plate 5, a piston plate 751 is sealingly and slidably connected in the piston cylinder 75, a piston rod 752 is fixed on the piston plate 751, a limiting rod 753 is fixed at the top end of the piston rod 752, and the limiting rod 753 is slidably connected in the annular groove 741, a water inlet pipe 754 and a water outlet pipe 755 are connected to the piston cylinder 75, the bottom end of the water inlet pipe 754 is slightly lower than the bottom of the horizontal plate 41, a one-way valve that only allows liquid to enter the piston cylinder 75 is provided on the water inlet pipe 754, and a spray head is provided on the water outlet pipe 755;

[0051] When the bottom of the cross plate 41 contacts the coolant, the bottom end of the water inlet pipe 754 is also immersed in the coolant. At this time, the furnace loading tray 4 is subjected to the additional resistance of the coolant when moving downward, resulting in a reduction in the downward movement speed. As a result, under the action of the second spring 532, the ear 531 moves downward relative to the support frame 53 and drives the rack 71 to move. Under the meshing action of the rack 71 and the column gear 73, the shaft 72 drives the eccentric wheel 74 to rotate, thereby driving the piston rod 752 to reciprocate up and down, sucking the coolant into the piston cylinder 75 and then spraying it to the bucket lip plate from the spray head, so that the part of the bucket lip plate immersed in the coolant and the part above the coolant are cooled at the same time. After the bucket lip plate is completely immersed in the coolant, the crane stops lowering the furnace loading tray 4. The furnace loading tray 4 moves downward relative to the ear 531 under the action of gravity and continues to drive the shaft 72 to rotate, thereby driving the piston cylinder 75 to continue to suck the coolant. At this time, the piston cylinder 75 sucks the coolant to stir the coolant flow, thereby improving the heat exchange efficiency.

[0052] The working principle of the present invention is as follows:

[0053] When loading the bucket lip plate into the furnace, first lift the lifting assembly from above the furnace loading tray 4, and fix the bucket lip plate sideways between the two vertical plates 42. In this embodiment, there are four vertical plates 42, so that two bucket lip plates can be heat-treated at the same time (the bucket lip plate is not fixed between the two middle vertical plates 42 for ventilation). After the bucket lip plate is fixed, the furnace loading tray 4 is moved into the heat treatment furnace 2 by the trolley 3, and then the lifting assembly is lifted back. After the heat treatment is completed, the furnace loading tray 4 follows the trolley 3 out of the furnace, and the furnace loading tray 4 is automatically connected to the lifting assembly after it is out of the furnace. Loading the bucket lip plate sideways into the furnace can make the bucket lip plate heated more evenly, which is beneficial to reduce deformation and warping during the heat treatment process, make the size and shape of the bucket lip plate after heat treatment more stable, and achieve good heat treatment effect. In addition, multiple bucket lip plates can be heat-treated at the same time, which greatly improves the heat treatment efficiency.

[0054] When the bucket lip plate is quenched and cooled, the crane hooks the lifting ear 531 and moves up to compress the spring 532, and then the lifting ear 531 drives the furnace loading tray 4 and the bucket lip plate to move up. After the furnace loading tray 4 moves to the top of the cooling pool, the crane lowers the furnace loading tray 4 to immerse the bucket lip plate in the cooling pool for cooling. The bucket lip plate can be lifted after it is taken out of the furnace, and there is no need to manually hang the lifting rope, which reduces the safety hazards of the staff. At the same time, it shortens the time for the bucket lip plate to enter the cooling pool after it is taken out of the furnace, which is conducive to improving the quality of heat treatment;

[0055] When the bottom of the cross plate 41 contacts the coolant, the bottom end of the water inlet pipe 754 is also immersed in the coolant. At this time, the furnace loading tray 4 is subjected to the additional resistance of the coolant when moving downward, resulting in a reduction in the downward movement speed. As a result, under the action of the second spring 532, the ear 531 moves downward relative to the support frame 53 and drives the rack 71 to move. Under the meshing action of the rack 71 and the column gear 73, the shaft 72 drives the eccentric wheel 74 to rotate, thereby driving the piston rod 752 to reciprocate up and down, sucking the coolant into the piston cylinder 75 and then spraying it to the bucket lip plate from the spray head, so that the part of the bucket lip plate immersed in the coolant and the part above the coolant are cooled at the same time. After the bucket lip plate is completely immersed in the coolant, the crane stops lowering the furnace loading tray 4. The furnace loading tray 4 moves downward relative to the ear 531 under the action of gravity and continues to drive the shaft 72 to rotate, thereby driving the piston cylinder 75 to continue to suck the coolant. At this time, the piston cylinder 75 sucks the coolant to stir the coolant flow, thereby improving the heat exchange efficiency.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for lifting bucket lip pallet loading furnace, characterized in that: include: A furnace loading tray (4), the furnace loading tray (4) is located above the trolley, the furnace loading tray (4) comprises a transverse plate (41) and a plurality of vertical plates (42), the vertical plates (42) are fixed above the transverse plate (41), and the transverse plate (41) and the vertical plates (42) are both provided with evenly distributed mesh holes (43).

2. The tooling for loading and lifting bucket lip pallets into a furnace according to claim 1, characterized in that: A lifting assembly is provided above the furnace loading tray (4), and the lifting assembly comprises: A top plate (5), wherein the top plate (5) is provided with a plurality of evenly distributed through grooves (51); Support legs (52), the support legs (52) being four in number and fixed below the top plate (5); There are four positioning rods (6) which are coaxially arranged with the supporting legs (52).

3. The tooling for loading and lifting bucket lip pallets into a furnace according to claim 2, characterized in that: A limiting hole (521) adapted to the positioning rod (6) is provided at the bottom of the supporting leg (52), and the positioning rod (6) is inserted into the limiting hole (521).

4. The tooling for loading and lifting bucket lip pallets into a furnace according to claim 3, characterized in that: Two first insertion rods (44) and two second insertion rods (45) are fixed on the furnace loading tray (4), and the first insertion rods (44) and the second insertion rods (45) are both provided with insertion holes (46). The height of the first insertion rods (44) is lower than the height of the second insertion rods (45), and the first insertion rods (44) are located on a side away from the heat treatment furnace (2).

5. The tooling for loading and lifting bucket lip pallets into a furnace according to claim 4, characterized in that: Two first plug plates (54) and two second plug plates (55) are fixed below the top plate (5); the distance between the first plug plate (54) and the second plug plate (55) is equal to the distance between the first plug rod (44) and the second plug rod (45); the first plug plate (54) is located on a side away from the heat treatment furnace (2); the height of the bottom end of the second plug plate (55) is higher than the height of the top end of the first plug rod (44); and the first plug plate (54) and the second plug plate (55) are both provided with a card block (56) adapted to the plug hole (46).

6. The tooling for loading and lifting bucket lip plates on pallets according to claim 5 is characterized in that: The clamping block (56) is provided with a rectangular groove (561), a wedge block (562) is provided in the rectangular groove (561), a first spring (563) is provided at the bottom of the wedge block (562), and two ends of the first spring (563) are respectively fixed to the wedge block (562) and the rectangular groove (561).

7. The tooling for loading and lifting bucket lip pallets into a furnace according to claim 2, characterized in that: The lifting assembly also includes a support frame (53) fixed on the top plate (5), a lifting ear (531) is slidably connected to the support frame (53), a second spring (532) is sleeved on the lifting ear (531), a movable rod (533) is fixed at the bottom end of the lifting ear (531), and the movable rod (533) is slidably connected to the support frame (53).

8. The tooling for loading and lifting bucket lip plates on pallets according to claim 7 is characterized in that: The top plate (5) is provided with a spray assembly, which comprises two racks (71) fixed on the movable rod (533); a rotating shaft (72) is rotatably connected to the support frame (53); column gears (73) meshing with the racks (71) are fixed at both ends of the rotating shaft (72); eccentric wheels (74) are fixed at both ends of the rotating shaft (72); an annular groove (741) is provided on the eccentric wheel (74); two piston cylinders (75) are fixed to the top plate (5); a piston plate (751) is sealingly and slidably connected inside the piston cylinder (75); a piston rod (752) is fixed on the piston plate (751); a limiting rod (753) is fixed at the top end of the piston rod (752); the limiting rod (753) is slidably connected in the annular groove (741); and a water inlet pipe (754) and a water outlet pipe (755) are connected to the piston cylinder (75).

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