Double-lifting chain bed and skid translation reversing system

Abstract

The utility model discloses a double-lifting chain bed and a skid translation reversing system, and belongs to the technical field of chain bed conveying equipment.The double-lifting chain bed comprises a bottom frame and a longitudinal moving chain bed, and vertical guide columns are fixedly arranged at the four corners of the bottom frame respectively; guide blocks corresponding to the guide columns are fixedly arranged on the longitudinal moving chain bed; a rotatable lifting shaft is arranged on the bottom frame, and eccentric rollers are arranged at the two ends of the lifting shaft; a wheel groove is formed in the lower end of the chain bed frame, and the eccentric roller is inserted into the wheel groove; a longitudinal moving motor is arranged on the outer side of the longitudinal moving chain bed; a lifting motor is arranged on the outer side of the longitudinal moving chain bed and used for driving the lifting shaft to rotate. An oil cylinder is prevented from being used as a lifting mechanism in the drying room, the chain bed is lifted in the drying room by adopting a mechanical structure, and the driving mechanism is arranged outside the drying room, so that the reliability is improved; and the skid can be transferred in a narrow space through one-time lifting, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of chain bed conveying equipment, and relates to a double lifting chain bed and a skid translation and reversing system. Background Technology

[0002] Light-duty skid conveyor systems are widely used in the automotive industry and other similar industries, and they typically employ chain beds as the basic conveying unit. After pretreatment and painting, vehicle body parts require drying. However, the drying chamber is limited by the workshop layout, and space is scarce. Skids need to be moved horizontally and reversed when entering and exiting the drying chamber. To facilitate skid handover, multiple chain beds within the drying chamber need to be raised and lowered to create a height difference between the two connecting chain beds, allowing for skid movement. This results in a complex chain bed mechanism and low efficiency. Furthermore, traditional chain beds use hydraulic cylinders for lifting, but the high temperatures within the drying chamber and the poor reliability of hydraulic components like cylinders under high-temperature conditions increase the failure rate of the chain bed mechanism, further impacting production efficiency. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a double lifting chain bed and a skid translation and reversing system. The purpose is to design a double lifting chain bed mechanism for the high temperature environment of the drying room. The skid translation and reversing can be completed in one lifting and lowering, and the use of hydraulic cylinders as lifting mechanism is avoided, so that the chain bed can work in the drying room for a long time, thereby improving work efficiency and reliability.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution.

[0005] A double-lifting chain bed includes a base frame mounted on the foundation plate of a drying oven; a longitudinal chain bed is mounted on the upper end of the base frame, the longitudinal chain bed including a pair of parallel chain bed frames, the two chain bed frames being fixedly connected as one unit by several crossbeams; sprockets are respectively provided at both ends of the chain bed frames, and a chain winds around the two sprockets for transferring a skid sitting on the chain; vertical guide posts are respectively fixed at the four corners of the base frame; guide blocks corresponding to the guide posts are fixed on the longitudinal chain bed, the guide blocks having guide grooves, the guide posts being inserted into the guide grooves for guiding the vertical lifting and lowering of the longitudinal chain bed; a rotatable lifting shaft is provided on the base frame, the lifting shaft having eccentric rollers at both ends; a wheel groove is provided at the lower end of the chain bed frame, the eccentric rollers being inserted into the wheel grooves for passing through the eccentric rollers when the lifting shaft rotates. The chain rotates within the groove, driving the longitudinal moving chain bed to rise and fall. A longitudinal moving motor is located outside the longitudinal moving chain bed, and the end of the longitudinal moving universal joint connected to the motor is connected to one of the sprockets for driving the chain to rotate cyclically. A lifting motor is located outside the longitudinal moving chain bed, and the end of the lifting universal joint connected to the motor is connected to the lifting shaft for driving the lifting shaft to rotate. The first and second transverse moving chain beds are both mounted on the drying oven foundation plate between the two chain bed frames. The conveying direction of the first and second transverse moving chain beds is perpendicular to the conveying direction of the longitudinal moving chain bed. Both the first and second transverse moving chain beds are connected to transverse universal joints, the ends of which are respectively connected to two transverse motors located outside the longitudinal moving chain bed for providing power to the first and second transverse moving chain beds.

[0006] As a further optimization, there are two lifting shafts, symmetrically distributed with the center position of the base frame as a reference; a rotatable intermediate shaft is provided at the center position of the base frame; both lifting shafts are connected to the intermediate shaft through a chain drive mechanism; the end of the longitudinal universal joint is connected to the intermediate shaft, and is used by the lifting motor to drive the two lifting shafts to rotate synchronously.

[0007] As a further optimization, a central guide post is fixed at the center of the base frame; there are two central guide posts, which are symmetrically distributed on the left and right sides with the crossbeam in the middle of the longitudinal moving chain bed as the reference; a pair of guide blocks are fixed to the crossbeam in the middle of the longitudinal moving chain bed to correspond to the two central guide posts; the first transverse moving chain bed and the second transverse moving chain bed are respectively located on the left and right sides of the crossbeam in the middle of the longitudinal moving chain bed.

[0008] As a further optimization, a side guide bar is provided on the outer side of the upper end of the chain bed frame; one side of the side guide bar is inserted into the side C-shaped groove, and the other side faces the chain; the side C-shaped groove is fixed to the chain bed frame.

[0009] As a further optimization, a bottom guide bar is provided in the middle of the chain bed frame. The lower end of the bottom guide bar is inserted into the bottom C-shaped groove, and its top end supports the chain below. One end of the bottom guide bar is fixed to the bottom C-shaped groove by a screw. The bottom C-shaped groove is fixed to the chain bed frame.

[0010] As a further optimization, both the side guide strips and the bottom guide strips are made of high-temperature resistant nylon material.

[0011] This utility model also provides a skid translation and reversing system, including the double lifting chain bed as described above.

[0012] As a further optimization, it also includes a first external chain bed and a second external chain bed disposed outside the longitudinal transfer chain bed; the conveying direction of the first external chain bed is opposite to the first transverse transfer chain bed, and it is used to convey the skid to the first transverse transfer chain bed; the conveying direction of the second external chain bed is opposite to the second transverse transfer chain bed, and it is used to receive the skid output by the second transverse transfer chain bed.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention avoids using hydraulic cylinders as lifting mechanisms in the drying room, and instead employs a mechanical structure to lift the chain bed inside the drying room, with the drive mechanism located outside the drying room, thus improving reliability; moreover, a single lift can complete the transfer of the skid in a confined space, improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the planar structure of the double lifting chain bed according to an embodiment of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the double lifting chain bed according to an embodiment of the present utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the base frame according to an embodiment of the present utility model;

[0018] Figure 4 This is a partial structural schematic diagram of the chain bed frame according to an embodiment of the present invention;

[0019] Figure 5 This is a cross-sectional view of the installation structure of the side guide strip according to an embodiment of the present invention;

[0020] Figure 6 This is a cross-sectional view of the screw holes of the bottom guide strip in an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the planar structure of the skid translation and reversing system according to an embodiment of the present invention.

[0022] The correspondence between the technical features in the figure and the reference numerals is as follows: base frame 1; guide column 11; lifting shaft 12; eccentric roller 13; intermediate shaft 14; intermediate guide column 15; longitudinal moving chain bed 2; chain bed frame 21; side guide bar 211; side C-shaped groove 212; bottom guide bar 213; bottom C-shaped groove 214; crossbeam 22; guide block 23; wheel groove 24; longitudinal moving motor 25; longitudinal moving universal joint 26; lifting motor 27; lifting universal joint 28; first transverse moving chain bed 3; second transverse moving chain bed 4; transverse moving universal joint 5; transverse moving motor 6; first external chain bed 7; second external chain bed 8; skid 9. Detailed Implementation

[0023] The present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some preferred embodiments of the present invention, and not all embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of protection of the present invention.

[0024] Example: Please refer to Figure 1-7 .

[0025] A sled translation and reversing system is applied in the translation and reversing operation of sled 9 in a drying oven. The system includes a double-lifting chain bed, comprising a base frame 1 and a longitudinal chain bed 2. The longitudinal chain bed 2 includes a pair of parallel chain bed frames 21, which are fixedly connected as a single unit by several crossbeams 22. Each end of a chain bed frame 21 is provided with a sprocket, and a chain winds around the two sprockets to transfer the sled 9 resting on the chain. Vertical guide posts 11 are fixed at the four corners of the base frame 1. Guide blocks 23 corresponding to the guide posts 11 are fixed on the longitudinal chain bed 2. Each guide block 23 has a guide groove, into which the guide posts 11 are inserted to guide the vertical lifting and lowering of the longitudinal chain bed 2. Therefore, the longitudinal chain bed 2 is slidably connected to the base frame 1 and can only move vertically.

[0026] The lifting mechanism of the longitudinal conveyor chain bed 2 is as follows: a rotatable lifting shaft 12 is provided on the base frame 1, and eccentric rollers 13 are provided at both ends of the lifting shaft 12; a wheel groove 24 is provided at the lower end of the chain bed frame 21, and the eccentric rollers 13 are inserted into the wheel groove 24. When the lifting shaft 12 rotates, the eccentric rollers 13 rotate in the wheel groove 24, thereby driving the longitudinal conveyor chain bed 2 to rise and fall. It can be seen that the axis of the eccentric rollers 13 is offset from the axis of the lifting shaft 12. When the lifting shaft 12 rotates, the eccentric rollers 13 move up and down, thereby driving the longitudinal conveyor chain bed to rise and fall. The lifting shaft 12 is inserted into a bearing seat, and the bearing seat is mounted on the base frame 1 to allow the lifting shaft 12 to rotate.

[0027] A longitudinal motor 25 is provided on the outside of the longitudinal moving chain bed 2. The end of the longitudinal moving universal joint 26 connected to the longitudinal moving motor 25 is driven to one of the sprockets. The two sprockets are driven to each other through a connecting shaft, which is used to drive the chain to rotate cyclically. A lifting motor 27 is provided on the outside of the longitudinal moving chain bed 2. The end of the lifting universal joint 28 connected to the lifting motor 27 is driven to the lifting shaft 12, which is used to drive the lifting shaft 12 to rotate. It can be seen that the drive mechanism and lifting mechanism of the longitudinal moving chain bed 2 are external and connected by universal joints. Thus, the longitudinal moving chain bed 2 can be arranged in the drying chamber, while the longitudinal moving motor 25 and the lifting motor are arranged outside the drying chamber. On the one hand, this avoids the use of hydraulic components such as oil cylinders, which has high reliability. On the other hand, with the motors outside the drying chamber, only the mechanical parts are located in the drying chamber, which has good high temperature resistance and long service life. Moreover, the maintenance and repair of the motors are convenient.

[0028] like Figure 7 As shown, the first transverse chain bed 3 and the second transverse chain bed 4 are both mounted on the drying chamber foundation plate between the two chain bed frames 21; the conveying direction of the first transverse chain bed 3 and the second transverse chain bed 4 is perpendicular to the conveying direction of the longitudinal chain bed 2; the first transverse chain bed 3 and the second transverse chain bed 4 are both connected to transverse universal joints 5, and the ends of the two transverse universal joints 5 are respectively connected to two transverse motors 6 located outside the longitudinal chain bed 2, for providing power to the first transverse chain bed 3 and the second transverse chain bed 4. It can be seen that the drive motors of the first transverse chain bed 3 and the second transverse chain bed 4 are also located outside the drying chamber, transmitting power through universal joints, and due to the universal joint connection, when the longitudinal chain bed 2 rises and falls, it does not hinder the transmission of power to the first transverse chain bed 3 and the second transverse chain bed 4.

[0029] The skid translation reversing system further includes a first external chain bed 7 and a second external chain bed 8 disposed outside the longitudinal chain bed 2; the conveying direction of the first external chain bed 7 is opposite to the first transverse chain bed 3, and it is used to convey the skid 9 to the first transverse chain bed 3; the conveying direction of the second external chain bed 8 is opposite to the second transverse chain bed 4, and it is used to receive the skid 9 output by the second transverse chain bed 4.

[0030] The working principle is as follows: In the initial state, the longitudinal conveyor chain bed 2 falls to its low position, and the first transverse conveyor chain bed 3 extends from the upper end of the longitudinal conveyor chain bed 2. The transfer sequence of the skid 9 is as follows: the first external conveyor chain bed 7 transports the skid 9 to the first transverse conveyor chain bed 3; the longitudinal conveyor chain bed 2 is raised to its high position, and the skid 9 disengages from the first transverse conveyor chain bed 3; the skid 9 moves horizontally through the longitudinal conveyor chain bed 2 to the position of the second transverse conveyor chain bed 4 and stops, then the longitudinal conveyor chain bed 2 falls, placing the skid 9 on the second transverse conveyor chain bed 4 and separating it from the longitudinal conveyor chain bed 2, completing the horizontal movement of the skid 9. Then, the second transverse conveyor chain bed 4 transports the skid 9 to the second external conveyor chain bed 8, completing the reversal of the skid 9.

[0031] Therefore, it can be seen that the longitudinal conveyor chain bed 2 completes the translation and reversal of the skid 9 with one lifting and lowering operation, and there is only one lifting device in the longitudinal conveyor chain bed 2. The other first transverse conveyor chain bed 3, second transverse conveyor chain bed 4, first external conveyor chain bed 7 and second external conveyor chain bed 8 are all fixed. The lifting devices are few, and the operation is highly reliable. The two transverse conveyor chain beds are embedded in the longitudinal conveyor chain bed 2 to form a double lifting conveyor chain bed.

[0032] To ensure smoother lifting of the longitudinal conveyor chain bed 2, two lifting shafts 12 are symmetrically distributed around the center of the base frame 1. A rotatable intermediate shaft 14 is located at the center of the base frame 1. Both lifting shafts 12 are connected to the intermediate shaft 14 via a chain drive mechanism. The end of the longitudinal universal joint 26 is connected to the intermediate shaft 14, allowing the lifting motor 27 to drive the two lifting shafts 12 to rotate synchronously. Similarly, the more lifting shafts 12 there are, the smoother the lifting of the longitudinal conveyor chain bed 2 will be. One lifting motor 27 drives multiple lifting shafts 12, reducing the number of drive devices, lowering costs, and ensuring the synchronicity of the operation of multiple lifting shafts 12.

[0033] To further constrain the longitudinal conveyor chain bed 2 and ensure its vertical lifting, a central guide post 15 is fixed at the center of the base frame 1. There are two central guide posts 15, symmetrically distributed to the left and right of the crossbeam 22 in the middle of the longitudinal conveyor chain bed 2. A pair of guide blocks 23 are fixed to the crossbeam 22 in the middle of the longitudinal conveyor chain bed 2 to correspond to the two central guide posts 15. The first transverse conveyor chain bed 3 and the second transverse conveyor chain bed 4 are respectively located on the left and right sides of the crossbeam 22 in the middle of the longitudinal conveyor chain bed 2.

[0034] To adapt to the high-temperature drying environment, a side guide strip 211 is provided on the outer side of the upper end of the chain bed frame 21. One side of the side guide strip 211 is inserted into the side C-shaped groove 212, and the other side faces the chain. The side C-shaped groove 212 is fixed to the chain bed frame 21. The side guide strip 211 is movable within the side C-shaped groove 212, allowing it to slide relative to the chain bed 212 during thermal expansion and contraction, thus preventing thermal deformation. The side guide strip 211 restricts the outer side of the skid 9, guiding the skid 9 to move along the longitudinal chain bed 2.

[0035] In a preferred embodiment, a bottom guide bar 213 is provided in the middle of the chain bed frame 21. The lower end of the bottom guide bar 213 is inserted into the bottom C-shaped groove 214, and its top end supports the chain below. One end of the bottom guide bar 213 is fixed to the bottom C-shaped groove 214 by a screw, and the other end is a free end. The bottom C-shaped groove 214 is fixed to the chain bed frame 21. It can be seen that the bottom guide bar 213 plays a load-bearing role, supporting the weight of the skid 9 and reducing the load on the chain. Simultaneously, because one end is fixed, the free end can expand and contract within the bottom C-shaped groove 214, adapting to thermal expansion and contraction.

[0036] Preferably, both the side guide strip 211 and the bottom guide strip 213 are made of high-temperature resistant nylon material. This material is heat-resistant, reduces frictional resistance, and can be replaced after long-term use, resulting in low maintenance costs.

[0037] The advantages of this invention are: it avoids using a hydraulic cylinder as a lifting mechanism in the drying room, and adopts a mechanical structure to lift the chain bed inside the drying room, with the drive mechanism located outside the drying room, thus improving reliability; moreover, the transfer of the skid 9 in a narrow space can be completed in one lift, thus improving work efficiency.

[0038] The parts of this utility model not described in detail are prior art; for those skilled in the art, the technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, they should be considered to be within the scope of this specification.

Claims

1. A double-lifting chain bed, comprising a base frame (1) installed on the foundation plate of a drying room; a longitudinal moving chain bed (2) is installed on the upper end of the base frame (1), the longitudinal moving chain bed (2) comprising a pair of parallel chain bed frames (21), the two chain bed frames (21) being fixedly connected as one unit by a plurality of crossbeams (22); sprockets are respectively provided at both ends of the chain bed frames (21), and chains wind around the two sprockets; characterized in that: Vertical guide posts (11) are fixed at the four corners of the base frame (1); guide blocks (23) corresponding to the guide posts (11) are fixed on the longitudinal transfer chain bed (2), the guide blocks (23) are provided with guide grooves, and the guide posts (11) are inserted into the guide grooves; A rotatable lifting shaft (12) is provided on the base frame (1), and eccentric rollers (13) are provided at both ends of the lifting shaft (12); a wheel groove (24) is provided at the lower end of the chain bed frame (21), and the eccentric rollers (13) are inserted into the wheel groove (24); A longitudinal motor (25) is provided on the outside of the longitudinal chain bed (2), and the longitudinal universal joint (26) connected to the longitudinal motor (25) is connected to one of the sprockets. A lifting motor (27) is provided on the outside of the longitudinal chain bed (2), and the lifting universal shaft (28) connected to the lifting motor (27) is connected to the lifting shaft (12) in a transmission connection. The first transverse chain bed (3) and the second transverse chain bed (4) are both installed on the drying chamber base plate between the two chain bed frames (21); the conveying direction of the first transverse chain bed (3) and the second transverse chain bed (4) is perpendicular to the conveying direction of the longitudinal chain bed (2); the first transverse chain bed (3) and the second transverse chain bed (4) are both connected to transverse universal shafts (5), and the ends of the two transverse universal shafts (5) are respectively connected to two transverse motors (6) located outside the longitudinal chain bed (2).

2. The double lifting chain bed according to claim 1, characterized in that: There are two lifting shafts (12); a rotatable intermediate shaft (14) is provided at the center of the base frame (1); both lifting shafts (12) are connected to the intermediate shaft (14) through a chain drive mechanism; the end of the longitudinal universal joint (26) is connected to the intermediate shaft (14) and is used by the lifting motor (27) to drive the two lifting shafts (12) to rotate synchronously.

3. The double lifting chain bed according to claim 1, characterized in that: A central guide post (15) is fixed at the center of the base frame (1); there are two central guide posts (15), which are symmetrically distributed on the left and right sides with the crossbeam (22) in the middle of the longitudinal chain bed (2) as the reference; a pair of guide blocks (23) are fixed to the crossbeam (22) in the middle of the longitudinal chain bed (2) to correspond to the two central guide posts (15); the first transverse chain bed (3) and the second transverse chain bed (4) are respectively located on the left and right sides of the crossbeam (22) in the middle of the longitudinal chain bed (2).

4. The double lifting chain bed according to claim 1, characterized in that: The chain bed frame (21) has a side guide strip (211) on the outer side of its upper end; one side of the side guide strip (211) is inserted into the side C-shaped groove (212), and the other side faces the chain; the side C-shaped groove (212) is fixed to the chain bed frame (21).

5. The double lifting chain bed according to claim 4, characterized in that: A bottom guide bar (213) is provided in the middle of the chain bed frame (21). The lower end of the bottom guide bar (213) is inserted into the bottom C-shaped groove (214), and its top end supports the chain below. One end of the bottom guide bar (213) is fixed to the bottom C-shaped groove (214) by a screw. The bottom C-shaped groove (214) is fixed to the chain bed frame (21).

6. The double lifting chain bed according to claim 5, characterized in that: Both the side guide strip (211) and the bottom guide strip (213) are made of high-temperature resistant nylon material.

7. A skid translation reversing system, characterized in that: Includes the double lifting chain bed as described in any one of claims 1-6.

8. The skid translation reversing system according to claim 7, characterized in that: It also includes a first external chain bed (7) and a second external chain bed (8) disposed outside the longitudinal chain bed (2); the conveying direction of the first external chain bed (7) is opposite to the first transverse chain bed (3), and it is used to convey the skid (9) to the first transverse chain bed (3); the conveying direction of the second external chain bed (8) is opposite to the second transverse chain bed (4), and it is used to receive the skid (9) output by the second transverse chain bed (4).

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