Telescopic chain bed and use method thereof

Abstract

The present invention discloses a telescopic chain bed and a use method thereof, comprising a bottom frame, a telescopic frame, a chain bed and a driving mechanism, wherein the telescopic frame is slidably connected to the upper end of the bottom frame and is used to drive the chain bed to achieve bidirectional telescopic extension and retraction, the chain bed is arranged at the upper end of the telescopic frame and is used to convey a vehicle body, the driving mechanism is arranged on the bottom frame, a movable end of which is connected to the telescopic frame and is used to control the reciprocating movement of the telescopic frame, the driving mechanism comprises a driving motor, a rotating arm and a connecting rod, the driving motor is fixed to the bottom frame, and the output shaft of the driving motor is fixedly connected to the rotating arm. The telescopic chain bed and the use method thereof realize the linked cross-synchronous operation when adjacent chain beds are connected with the mobile chain bed, avoid the jamming and poor operation during the vehicle body support and conveying process caused by the end gap when the mobile chain bed is connected, realize smooth conveying, and are beneficial to the improvement of production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile production, and in particular to a telescopic chain bed and a use method thereof. Background Art

[0002] As we all know, after decades of vigorous development, the domestic automobile industry has made great progress in technology, especially the skid conveying system used in automobile paint shops. Due to its flexible layout, diverse functions, and high degree of automation, it is now widely used in the automobile industry and other similar industries. The skid conveying system mostly uses a roller bed as the basic conveying unit, and the roller bed must pass through the skid to realize the conveying and transmission of the car body, which increases the total investment cost to a certain extent. The traditional skid is to set the car body on two longitudinal beams, and the two longitudinal beams cooperate with the conveyor to realize the conveying of the car body to complete various process. In order to reduce investment costs and reduce energy consumption, skidless conveying technology has gradually been developed.

[0003] Skidless conveying is carried out through chain beds, which are arranged crosswise. When the fixed chain bed is converted to the movable chain bed, there is a gap at the ends of the two chain beds due to the lack of the longitudinal beam of the slide. The crossbeam supporting the car body will be stuck during the conveying process, resulting in poor operation or even impassability, which greatly affects the production rhythm. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a telescopic chain bed and a method of use, which realizes the linked cross-synchronous operation when adjacent chain beds are connected with the mobile chain beds, avoids the jamming and poor operation during the vehicle body support transportation caused by the end gap when the mobile chain beds are docked, realizes smooth transportation, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a telescopic chain bed, comprising a bottom frame, a telescopic frame, a chain bed and a driving mechanism, wherein the telescopic frame is slidably connected to the upper end of the bottom frame, and is used to drive the chain bed to achieve bidirectional telescopic movement, and the chain bed is arranged at the upper end of the telescopic frame, and is used to transport the vehicle body, and the driving mechanism is arranged on the bottom frame, and its moving end is connected to the telescopic frame, and is used to control the reciprocating movement of the telescopic frame.

[0006] As a preferred technical solution of the present invention, the driving mechanism includes a driving motor, a rotating arm and a connecting rod. The driving motor is fixed on the bottom frame, the output shaft of the driving motor is fixedly connected to the rotating arm, one end of the rotating arm is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is connected to the telescopic frame.

[0007] As a preferred technical solution of the present invention, the driving mechanism includes a gear motor, a driving gear and a rack. The gear motor is fixed on the bottom frame, the output shaft of the gear motor is fixedly connected to the driving gear, the driving gear is meshed with the rack, the rack is arranged parallel to the length direction of the bottom frame, and the rack is fixedly connected to the telescopic frame.

[0008] As a preferred technical solution of the present invention, the outer side surface of the rack is provided with a limit frame for its movement, and the limit frame is rotatably connected to the first guide wheel and the second guide wheel, respectively. The first guide wheel contacts the side surface of the rack, and the second guide wheel contacts the toothless end surface of the rack.

[0009] As a preferred technical solution of the present invention, the bottom frame and the telescopic frame are movably connected by at least one pair of walking wheel devices, and the walking wheel device includes an L-shaped fixed plate, a connecting shaft, walking wheels and a U-shaped guide rail. The L-shaped fixed plate is fixed to the bottom frame, and the L-shaped fixed plate is located on one side of the telescopic frame. The upper end of the L-shaped fixed plate is fixedly connected to the connecting shaft, and the walking wheel is rotatably connected to the connecting shaft. The U-shaped guide rail is arranged on the telescopic frame with its opening facing outward, and the walking wheel is located in the U-shaped guide rail and fits with the inner side surface of the U-shaped guide rail.

[0010] As a preferred technical solution of the present invention, limiting mechanisms are symmetrically arranged at both ends of the telescopic frame, and the limiting mechanisms include a first fixed seat, a limiting block, a roller, and a second fixed seat. One end of the limiting block is fixedly connected to the telescopic frame through the first fixed seat, and a long hole is opened on the limiting block along its length direction. The roller crosses the long hole and the two ends of the roller are rotatably connected to the second fixed seat, and the second fixed seat is connected to the bottom frame.

[0011] As a preferred technical solution of the present invention, a guiding mechanism is symmetrically arranged between the ends of adjacent intersecting chain beds, and the guiding mechanism includes a connecting frame, a supporting frame, a first roller and a second roller. The connecting frame is fixed on one side of the adjacent intersecting chain beds, and the supporting frame is arranged on the connecting frame. The first roller is horizontally rotatably connected to the upper outer side of the connecting frame for lateral guidance of the chain bed, and the second roller is vertically rotatably connected in the connecting frame for bottom support and guidance of the chain bed.

[0012] A method for using a telescopic chain bed, wherein the telescopic chain bed is arranged between two adjacent fixed chain beds, the chain bed is extended to a handover position and docked with a fixed chain bed to be handed over by telescopic driving of the telescopic chain bed, so as to realize the transmission of a vehicle body, and then the vehicle body is transmitted to another fixed chain bed by telescopic driving;

[0013] When the body needs to be transported in reverse direction, the telescopic chain bed is connected to the rotating device to realize the reversal of the body transportation;

[0014] When the body needs to be transported horizontally, the telescopic chain bed is connected to the moving equipment to realize the horizontal transfer of the body;

[0015] When the body needs to be reversed and transported transversely at the same time, the telescopic chain bed is connected to the rotary transfer device to realize the transverse handover and reversal of the body transportation;

[0016] When the car body needs to be lifted and transported, the telescopic chain bed is connected to the elevator equipment to realize the cross-floor handover of the car body.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the telescopic chain bed can effectively solve the problems of jamming and poor operation in the process of supporting and conveying the vehicle body caused by the end gap when the fixed chain bed and the mobile chain bed are connected, and realize smooth transportation. The telescopic frame with a sliding connection can drive the chain bed to realize two-way telescopic extension, which is convenient for the joint cross-synchronous operation of the fixed chain bed and the mobile chain bed, and ensures the smooth shifting and handover of the vehicle body. At the same time, the telescopic chain bed cooperates with mobile equipment such as rotating equipment, moving equipment, rotating moving equipment and lifting equipment, and is respectively used for the reversing handover, lateral handover, reversing and lateral synchronous handover and cross-floor handover of the vehicle body, which effectively speeds up the production rhythm and improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure after removing the chain bed;

[0020] Figure 3 It is a structural schematic diagram of the walking wheel device;

[0021] Figure 4 The schematic diagram of the structure of the guide mechanism;

[0022] Figure 5 It is a structural schematic diagram of the telescopic initial position of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the telescopic left intersection of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the telescopic right intersection of the present invention;

[0025] Figure 8 Schematic diagram of the structure of the driving mechanism in Example 2 of the present invention;

[0026] Fig. 9 for Figure 8 A magnified schematic diagram of center A.

[0027] In the figure: 1 chain bed, 2 telescopic frame, 3 bottom frame, 4 wheel device, 41 L-shaped fixed plate, 42 connecting shaft, 43 wheel, 44 U-shaped guide rail, 5 driving mechanism, 51 driving motor, 52 rotating arm, 53 connecting rod, 54 gear motor, 55 driving gear, 56 rack, 57 limiting frame, 58 first guide wheel, 59 second guide wheel, 6 limiting mechanism, 61 first fixed seat, 62 limiting block, 63 long hole, 64 roller, 65 second fixed seat, 7 guiding mechanism, 71 connecting frame, 72 supporting frame, 73 first roller, 74 second roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: a telescopic chain bed, comprising a movable bottom frame 3, a telescopic frame 2, a chain bed 1, a driving mechanism 5, a guiding mechanism 7 and a driving mechanism 5, wherein the telescopic frame 2 is movably connected to the upper end of the bottom frame 3, the chain bed 1 is arranged at the upper end of the telescopic frame 2, the driving mechanism 5 is arranged on the bottom frame 3, the driving mechanism 5 comprises a driving motor 51, a rotating arm 52 and a connecting rod 53, the driving motor 51 is fixed on the bottom frame 3, the output shaft of the driving motor 51 is fixedly connected to the rotating arm 52, one end of the rotating arm 52 is rotatably connected to one end of the connecting rod 53, and the other end of the connecting rod 53 is connected to the telescopic frame 2;

[0030] The support carrying the car body is transported to the docking chain bed, i.e., the telescopic chain bed handover station. At the same time, the telescopic chain bed drives the rotating arm 52 and the connecting rod 53 to rotate and extend through the driving motor 51, so that the chain bed 1 extends out of the handover position to form a linkage and cross-synchronous operation with the fixed chain bed to be handed over, so that the car body and the support are transmitted to the telescopic chain bed, and the driving mechanism 5 drives the chain bed 1 to be retracted and retracted to the initial position. The movable telescopic chain bed transports the car body to the next docking position, and then the driving mechanism 5 controls the chain bed 1 to extend and connect with the fixed chain bed to be handed over at the other end or the same end. The conveying chain of the chain bed 1 transports the car body to the handover chain bed, completing the transportation of the car body;

[0031] The bottom frame 3 is movably connected to the telescopic frame 2 by at least one pair of walking wheel devices 4, and the walking wheel device 4 includes an L-shaped fixed plate 41, a connecting shaft 42, a walking wheel 43 and a U-shaped guide rail 44. The L-shaped fixed plate 41 is fixed on the bottom frame 3, and the L-shaped fixed plate 41 is located on one side of the telescopic frame 2. The upper end of the L-shaped fixed plate 41 is fixedly connected to the connecting shaft 42, and the walking wheel 43 is rotatably connected to the connecting shaft 42. The U-shaped guide rail 44 is arranged on the telescopic frame 2 with the open end facing outward, and the walking wheel 43 is located in the U-shaped guide rail 44 and fits with the inner side surface of the U-shaped guide rail 44. The dual functions of walking and lateral guiding are realized by setting the walking wheel device 4, and the smoothness of the telescopic process and the stability of walking are guaranteed in cooperation with the U-shaped guide rail 44 on the telescopic frame 2.

[0032] The limiting mechanisms 6 are symmetrically arranged at both ends of the telescopic frame 2. The limiting mechanisms 6 include a first fixed seat 61, a limiting block 62, a roller 64, and a second fixed seat 65. One end of the limiting block 62 is fixedly connected to the telescopic frame 2 through the first fixed seat 61. A long hole 63 is opened on the limiting block 62 along its length direction. The roller 64 crosses the long hole 63 and both ends of the roller 64 are rotatably connected to the second fixed seat 65. The second fixed seat 65 is connected to the bottom frame 3.

[0033] During the input of the vehicle body, the limit block 62 moves along the track of the long hole 63 with the extension and contraction of the chain bed 1 and falls back to the low position, while the other end moves along the track and rises to the high position to play a blocking role, preventing the support from driving the vehicle body over; when the telescopic chain bed is retracted to the middle position, the limit block 62 also returns to the middle position; when the vehicle body is extended to the other end, the limit block 62 at one end close to the chain bed to be transferred is lowered to the lowest position to facilitate the output of the vehicle body, and the limit block 62 at the other end is raised to prevent the vehicle body from moving backward due to inertia;

[0034] A guide mechanism 7 is symmetrically arranged between the ends of adjacent intersecting chain beds 1, and the guide mechanism 7 includes a connecting frame 71, a supporting frame 72, a first roller 73 and a second roller 74. The connecting frame 71 is fixed between the adjacent intersecting chain beds 1, the supporting frame 72 is arranged on the connecting frame 71, the first roller 73 is horizontally rotatably connected to the upper outer side of the connecting frame 71, and is used for lateral guidance of the chain bed 1, and the second roller 74 is vertically rotatably connected in the connecting frame 71, and is used for bottom support and guidance of the chain bed 1;

[0035] The second roller 74 in the guide mechanism 7 plays a supporting role during the telescopic process and the conveying process to prevent the end from sinking and affecting the handover when the load is unbalanced. The first roller ensures the accuracy of the chain bed 1 when docking and realizes precise handover.

[0036] A method for using a telescopic chain bed, wherein a movable telescopic chain bed is arranged between two adjacent fixed chain beds, and the chain bed 1 is extended to a handover position and docked with a fixed chain bed to be handed over by telescopic driving of the telescopic chain bed to realize the transmission of a vehicle body, and then the vehicle body is transmitted to another fixed chain bed by telescopic driving;

[0037] When the body needs to be transported in reverse direction, the telescopic chain bed is connected to the rotating device to realize the reversal of the body transportation;

[0038] When the body needs to be transported horizontally, the telescopic chain bed is connected to the moving equipment to realize the horizontal transfer of the body;

[0039] When the body needs to be reversed and transported transversely at the same time, the telescopic chain bed is connected to the rotary transfer device to realize the transverse handover and reversal of the body transportation;

[0040] When the car body needs to be lifted and transported, the telescopic chain bed is connected to the elevator equipment to realize the cross-floor handover of the car body.

[0041] According to the needs of production transportation, it is used for the reversing handover, lateral handover, reversing and lateral synchronous handover and cross-floor handover of the car body, which effectively speeds up the production rhythm.

[0042] Example 2: Please refer to Figure 8-9 , which is different from the embodiment 1, is that the driving mechanism 5 includes a gear motor 54, a driving gear 55 and a rack 56, the gear motor 54 is fixed on the bottom frame 3, the output shaft of the gear motor 54 is fixedly connected to the driving gear 55, the driving gear 55 is meshed with the rack 56, the rack 56 is arranged in parallel along the length direction of the bottom frame 3, the rack 56 is fixedly connected to the telescopic frame 2, and the telescopic movement is realized by the meshing transmission displacement of the driving gear 55 and the rack 56, which can increase the telescopic stroke and realize the unequal telescopic stroke at both ends to meet the special space requirements;

[0043] The outer side surface of the rack 56 is provided with a limit frame 57 for its movement, and the limit frame 57 is rotatably connected with a first guide wheel 58 and a second guide wheel 59, respectively. The first guide wheel 58 is in contact with the side surface of the rack 56, and the second guide wheel 59 is in contact with the toothless end surface of the rack 56. By providing the first guide wheel 58 and the second guide wheel 59, the stability of the movement of the rack 56 and the accuracy of the direction can be ensured, and the rack 56 can be prevented from being offset during the movement.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic chain bed, characterized in that: The invention comprises a bottom frame (3), a telescopic frame (2), a chain bed (1) and a driving mechanism (5); the telescopic frame (2) is slidably connected to the upper end of the bottom frame (3) and is used to drive the chain bed (1) to achieve bidirectional telescopic movement; the chain bed (1) is arranged at the upper end of the telescopic frame (2) and is used to transport the vehicle body; the driving mechanism (5) is arranged on the bottom frame (3) and has a movable end connected to the telescopic frame (2) and is used to control the reciprocating movement of the telescopic frame (2); The two ends of the telescopic frame (2) are symmetrically provided with limiting mechanisms (6), the limiting mechanisms (6) comprising a first fixed seat (61), a limiting block (62), a roller (64), and a second fixed seat (65); one end of the limiting block (62) is fixedly connected to the telescopic frame (2) via the first fixed seat (61); a long hole (63) is provided on the limiting block (62) along its length direction; the roller (64) crosses the long hole (63) and the two ends of the roller (64) are rotatably connected to the second fixed seat (65); and the second fixed seat (65) is connected to the bottom frame (3); During the input process of the vehicle body, the limit block (62) moves along the track of the long hole (63) with the extension and contraction of the chain bed (1) and falls back to a low position, while the other end moves along the track to rise to a high position to play a blocking role, thereby preventing the support from driving the vehicle body over. When the telescopic chain bed is retracted to the middle position, the limit block (62) also returns to the middle position; when the vehicle body is extended to the other end, the limit block (62) at one end close to the chain bed to be transferred is lowered to the lowest position to facilitate the output of the vehicle body, and the limit block (62) at the other end is raised to prevent the vehicle body from moving backward due to inertia; The method for using the telescopic chain bed is as follows: the telescopic chain bed is arranged between two adjacent fixed chain beds, the chain bed (1) is extended to the handover position and docked with the fixed chain bed to be handed over by telescopic driving of the telescopic chain bed, so as to realize the transmission of the vehicle body, and then the vehicle body is transmitted to the other fixed chain bed by telescopic driving; When the body needs to be transported in reverse direction, the telescopic chain bed is connected to the rotating device to realize the reversal of the body transportation; When the body needs to be transported horizontally, the telescopic chain bed is connected to the moving equipment to realize the horizontal transfer of the body; When the body needs to be reversed and transported transversely at the same time, the telescopic chain bed is connected to the rotary transfer device to realize the transverse handover and reversal of the body transportation; When the car body needs to be lifted and transported, the telescopic chain bed is connected to the elevator equipment to realize the cross-floor handover of the car body.

2. A telescopic chain bed according to claim 1, characterized in that: The driving mechanism (5) comprises a driving motor (51), a rotating arm (52) and a connecting rod (53); the driving motor (51) is fixed on the bottom frame (3); the output shaft of the driving motor (51) is fixedly connected to the rotating arm (52); one end of the rotating arm (52) is rotatably connected to one end of the connecting rod (53); and the other end of the connecting rod (53) is connected to the telescopic frame (2).

3. The telescopic chain bed according to claim 1, characterized in that: The driving mechanism (5) comprises a gear motor (54), a driving gear (55) and a rack (56); the gear motor (54) is fixed on the bottom frame (3); the output shaft of the gear motor (54) is fixedly connected to the driving gear (55); the driving gear (55) is meshed with the rack (56); the rack (56) is arranged parallel to the length direction of the bottom frame (3); and the rack (56) is fixedly connected to the telescopic frame (2).

4. The telescopic chain bed according to claim 3, characterized in that: The outer side surface of the rack (56) is provided with a limiting frame (57) for the rack (56) to move through, and the limiting frame (57) is rotatably connected to a first guide wheel (58) and a second guide wheel (59), respectively; the first guide wheel (58) contacts the side surface of the rack (56), and the second guide wheel (59) contacts the toothless end surface of the rack (56).

5. The telescopic chain bed according to claim 1, characterized in that: The bottom frame (3) and the telescopic frame (2) are movably connected via at least one pair of wheel devices (4), the wheel device (4) comprising an L-shaped fixed plate (41), a connecting shaft (42), a wheel (43) and a U-shaped guide rail (44), the L-shaped fixed plate (41) being fixed on the bottom frame (3), the L-shaped fixed plate (41) being located on one side of the telescopic frame (2), the upper end of the L-shaped fixed plate (41) being fixedly connected to the connecting shaft (42), the wheel (43) being rotatably connected to the connecting shaft (42), the U-shaped guide rail (44) being arranged on the telescopic frame (2) and opening outward, the wheel (43) being located inside the U-shaped guide rail (44) and being in contact with the inner side surface of the U-shaped guide rail (44).

6. The telescopic chain bed according to claim 1, characterized in that: A guide mechanism (7) is symmetrically arranged between the ends of adjacent intersecting chain beds (1), and the guide mechanism (7) comprises a connecting frame (71), a supporting frame (72), a first roller (73) and a second roller (74). The connecting frame (71) is fixed to one side of the adjacent intersecting chain beds (1), and the supporting frame (72) is arranged on the connecting frame (71). The first roller (73) is horizontally rotatably connected to the upper outer side of the connecting frame (71) and is used for lateral guidance of the chain bed (1). The second roller (74) is vertically rotatably connected inside the connecting frame (71) and is used for bottom support and guidance of the chain bed (1).

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