Jacking mechanism for tunnel oven

Abstract

The utility model discloses a jacking mechanism for a tunnel oven, which comprises a speed reducing motor arranged in a power box body, the speed reducing motor drives a transmission shaft, two ends of the transmission shaft drive a lifting screw rod to rotate through meshing of bevel gears, and the lifting screw rod rotates to drive a lifting block to ascend or descend. The lifting block is connected with the double-lug jacking block through the jacking rod, and the double-lug jacking block is connected with the heating cover, so that the heating cover can be rapidly opened when the lifting block ascends, the heating cover can be rapidly closed when the lifting block descends, the opening effect of the heating cover is ensured, and time and labor are saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting mechanisms, and relates to a lifting mechanism for tunnel ovens. Background Technology

[0002] A tunnel oven is a widely used heat treatment equipment in industrial production. It provides uniform and efficient baking and curing for various products through continuous heating. A tunnel oven typically consists of a conveyor belt, a heating system, a control system, and an insulated outer shell. The conveyor belt continuously transports the products through the oven, while the heating system provides the required high-temperature environment. The heating system can use electric heating, gas heating, or infrared heating to achieve rapid and uniform heating.

[0003] When the tunnel oven is being cleaned or under maintenance, the heating cover needs to be opened. Traditionally, this can be done manually by workers, which is slow and labor-intensive. Alternatively, a cylinder can be used; however, the high ambient temperature around the tunnel oven can cause seals to age, reducing sealing performance. High temperatures also accelerate the oxidation and deterioration of the lubricating oil, affecting lubrication and ultimately increasing wear on the cylinder's moving parts, thus hindering the opening process. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, this application provides a lifting mechanism for a tunnel oven.

[0005] The technical solution of this utility model is as follows:

[0006] A lifting mechanism for a tunnel oven includes a geared motor installed inside a power housing, which drives a transmission shaft. One side of the transmission shaft is mounted to a support frame 1 via a bearing seat 1, and the other side of the transmission shaft is mounted to a support frame 2 via a bearing seat 2. A lifting screw 1 is mounted on the support frame 1 via a bearing seat 1. The top of the lifting screw 1 is mounted on an upper positioning plate 1. A lifting block 1 is mounted on the lifting screw 1. The lifting block 1 is connected to a double-eared top block 1 via a top rod 1. The lifting block 1 is equipped with a guide sleeve 1 and a guide column 1. A bevel gear 1 is mounted at the bottom of the lifting screw 1. The bevel gear 1 meshes with a bevel gear 2 mounted on the transmission shaft. A lifting screw 2 is mounted on the support frame 2 via a bearing seat 2. The top of the lifting screw 2 is mounted on an upper positioning plate 2. A lifting block 2 is mounted on the lifting screw 2. The lifting block 2 is connected to a double-eared top block 2 via a top rod 2. The lifting block 2 is equipped with a guide sleeve 2 and a guide column 2. A bevel gear 4 is mounted at the bottom of the lifting screw 2. The bevel gear 4 meshes with a bevel gear 3 mounted on the transmission shaft.

[0007] In a preferred embodiment of this utility model, the geared motor is equipped with a drive pulley, the drive shaft is equipped with a driven pulley, and a synchronous belt is installed between the drive pulley and the driven pulley.

[0008] In a preferred embodiment of this utility model: a lifting block is installed with a trigger block, the trigger block is equipped with a lower limit switch and an upper limit switch, and the lower limit switch and the upper limit switch are fixed to the positioning rod.

[0009] In a preferred embodiment of this utility model, a bearing seat is installed between the drive shaft and the support frame.

[0010] In a preferred embodiment of this utility model: a support seat 1 is provided between the power box and the bearing seat 1, and a support seat 2 is provided between the power box and the bearing seat 2.

[0011] In a preferred embodiment of this utility model, top rod one and top rod two have the same specifications and dimensions.

[0012] The beneficial effects of this utility model are:

[0013] A geared motor drives a transmission shaft, and the two ends of the transmission shaft drive a lifting screw to rotate through the meshing of bevel gears. The rotation of the lifting screw causes the lifting block to rise or fall. The lifting block is connected to a double-eared top block through a top rod, and the double-eared top block is connected to a heating cover. This allows the heating cover to be opened quickly when the lifting block rises and closed quickly when it falls, saving time and effort. Because the air in the high-temperature area flows upward, and the geared motor is located at the bottom of the lifting mechanism, it is not affected by the high-temperature environment, ensuring the opening effect of the heating cover is convenient and reliable. Attached Figure Description

[0014] Figure 1 This is a front view of a lifting mechanism for a tunnel oven according to the present invention;

[0015] Figure 2 This is the left view of the present invention;

[0016] Figure 3 This is a perspective view of the present invention.

[0017] In the diagram: 1-Double-ear top block 1; 2-Top rod 1; 3-Upper positioning plate 1; 4-Lifting block 1; 5-Guide sleeve 1; 6-Guide column 1; 7-Lifting screw 1; 8-Bearing with seat 1; 9-Support frame 1; 10-Bevel gear 1; 11-Bevel gear 2; 12-Drive shaft; 13-Bearing seat 1; 14-Positioning rod; 15-Lower limit switch; 16-Touch block; 17-Upper limit switch; 18-Support seat 1; 19- 20-Power housing; 21-Reduction motor; 22-Support seat two; 23-Bearing seat two; 24-Bevel gear three; 25-Bearing seat three; 26-Support frame two; 27-Bearing seat two; 28-Lifting screw two; 29-Guide column two; 30-Guide sleeve two; 31-Lifting block two; 32-Upper positioning plate two; 33-Top rod two; 34-Double-ear top block two; 35-Synchronous belt; 36-Passive pulley. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, a lifting mechanism for a tunnel oven includes a geared motor 20 installed inside a power housing 19. The geared motor 20 drives a transmission shaft 12. One side of the transmission shaft 12 is mounted to a support frame 9 via a bearing seat 13, and the other side of the transmission shaft 12 is mounted to a support frame 25 via a bearing seat 22. A lifting screw 7 is mounted on the support frame 9 via a bearing 8. The top of the lifting screw 7 is mounted on an upper positioning plate 3. A lifting block 4 is sleeved on the lifting screw 7. The lifting block 4 is connected to a double-eared top block 1 via a top rod 2. The lifting block 4 is equipped with a guide sleeve 5 and a guide column 6. The bottom of the lowering screw 17 is equipped with a bevel gear 10, which meshes with a bevel gear 21 installed on the drive shaft 12. The support frame 25 is equipped with a lifting screw 27 via a bearing 26. The top of the lifting screw 27 is mounted on an upper positioning plate 21. The lifting screw 27 is fitted with a lifting block 20, which is connected to a double-ear top block 23 via a top rod 22. The lifting block 20 is equipped with a guide sleeve 29 and a guide post 28. The bottom of the lifting screw 27 is equipped with a bevel gear 4, which meshes with a bevel gear 33 installed on the drive shaft 12.

[0020] The geared motor 20 is equipped with a drive pulley 34, and the drive shaft 12 is equipped with a driven pulley 36. A synchronous belt 35 is installed between the drive pulley 34 and the driven pulley 36 to improve transmission efficiency. The lifting block 1 4 is equipped with a trigger block 16, which is fitted with a lower limit switch 15 and an upper limit switch 17 to ensure movement safety. The lower limit switch 15 and the upper limit switch 17 are fixed to the positioning rod 14. A bearing seat 3 24 is installed between the drive shaft 12 and the support frame 2 25. A support seat 1 18 is provided between the power box 19 and the bearing seat 1 13, and a support seat 2 21 is provided between the power box 19 and the bearing seat 2 22 to ensure the stability of the overall structure. The push rod 1 2 and the push rod 2 32 have the same specifications and dimensions, which improves the versatility of parts.

[0021] During operation, the geared motor 20 drives the transmission shaft 12. One end of the transmission shaft 12 drives the lifting screw 7 to rotate through the meshing of bevel gear 10 and bevel gear 21. The rotation of the lifting screw 7 causes the lifting block 4 to rise or fall. The lifting block 4 is connected to the double-eared top block 11 through the top rod 2. The double-eared top block 11 is connected to the heating cover. The other end of the transmission shaft 12 drives the lifting screw 27 to rotate through the meshing of bevel gear 4 and bevel gear 323. The rotation of the lifting screw 27 causes the lifting block 20 to rise or fall. The lifting block 20 is connected to the double-eared top block 23 through the top rod 22. The double-eared top block 23 is connected to the heating cover. When the double-eared top blocks 11 and 232 rise simultaneously, the heating cover can be opened quickly. When the double-eared top blocks 11 and 232 fall, the heating cover can be closed quickly, saving time and effort.

[0022] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. A lifting mechanism for a tunnel oven, characterized in that: Includes a geared motor (20) installed inside the power box (19), the geared motor (20) drives the transmission shaft (12), one side of the transmission shaft (12) is installed on the support frame (9) via bearing seat one (13), the other side of the transmission shaft (12) is installed on the support frame two (25) via bearing seat two (22), the support frame one (9) is equipped with a lifting screw one (7) via a seated bearing one (8), the top of the lifting screw one (7) is installed on the upper positioning plate one (3), the lifting screw one (7) is fitted with a lifting block one (4), the lifting block one (4) is connected to the double-ear top block one (1) via a top rod one (2), the lifting block one (4) is equipped with a guide sleeve one (5) and a guide post one (6), the lifting screw one ( 7) is equipped with a bevel gear 1 (10) at the bottom. The bevel gear 1 (10) meshes with the bevel gear 2 (11) installed on the transmission shaft (12). The support frame 2 (25) is equipped with a lifting screw 2 (27) through a bearing 2 (26). The top of the lifting screw 2 (27) is installed on the upper positioning plate 2 (31). The lifting screw 2 (27) is fitted with a lifting block 2 (30). The lifting block 2 (30) is connected to the double-ear top block 2 (33) through a top rod 2 (32). The lifting block 2 (30) is equipped with a guide sleeve 2 (29) and a guide column 2 (28). The bottom of the lifting screw 2 (27) is equipped with a bevel gear 4. The bevel gear 4 meshes with the bevel gear 3 (23) installed on the transmission shaft (12).

2. The lifting mechanism for a tunnel oven according to claim 1, characterized in that: The geared motor (20) is equipped with a drive pulley (34), the drive shaft (12) is equipped with a driven pulley (36), and a synchronous belt (35) is installed between the drive pulley (34) and the driven pulley (36).

3. The lifting mechanism for a tunnel oven according to claim 1, characterized in that: The lifting block (4) is equipped with a trigger block (16), the trigger block (16) is equipped with a lower limit switch (15) and an upper limit switch (17), and the lower limit switch (15) and the upper limit switch (17) are fixed to the positioning rod (14).

4. The lifting mechanism for a tunnel oven according to claim 1, characterized in that: A bearing seat three (24) is installed between the drive shaft (12) and the support frame two (25).

5. The lifting mechanism for a tunnel oven according to claim 1, characterized in that: A support seat 1 (18) is provided between the power box (19) and the bearing seat 1 (13), and a support seat 2 (21) is provided between the power box (19) and the bearing seat 2 (22).

6. The lifting mechanism for a tunnel oven according to any one of claims 1-5, characterized in that: The top rod one (2) and the top rod two (32) have the same specifications and dimensions.

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