Conveying line guide rail lifting equipment and automobile assembly conveying line

Abstract

A guide rail of the conveying line comprises a switching guide rail, a high-position guide rail and a low-position guide rail, the guide rail lifting device comprises a guide frame assembly, the upper end of the guide frame assembly is fixedly connected with a building structure above the guide frame assembly, and the lower end of the guide frame assembly is suspended; the sliding frame assembly is in sliding fit with the guide frame assembly and is used for mounting the transfer guide rail; the upper portion of the connecting frame assembly is fixedly connected with a building structure, and the side face of the connecting frame assembly is fixedly connected with the sliding frame assembly; the driving mechanism is arranged on the connecting frame assembly and is in transmission connection with the sliding frame assembly, so that the sliding frame assembly ascends and descends in the vertical direction under the guiding effect of the guiding frame assembly; when the sliding frame assembly is located at the high position, the transfer guide rail is in butt joint with the high-position guide rail, and when the sliding frame assembly is located at the low position, the transfer guide rail is in butt joint with the low-position guide rail, so that the aerial conveying function at different heights can be achieved, the cost of the conveying line is reduced, and the ground space is not occupied.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly, in particular to a conveyor line guide rail lifting device and an automobile assembly conveyor line. Background Art

[0002] The EMS conveyor system (Electrified monorail system) is a conveyor system that uses a single electrically driven trolley to run on a track. Each trolley is equipped with an independent drive device and an intelligent controller, which enables them to move autonomously on the track. The EMS conveyor system is mainly composed of a suspension (column) steel structure, a running track, a power supply system (contact power supply or contactless power supply), a loading trolley, a turnout, non-standard customized hoisting equipment and an electrical control system. The EMS conveyor system is widely used in automobile assembly conveyor line technology. Its tracks use lightweight aluminum rails, and the transport hoisting equipment is self-powered and powered by a sliding guide. It runs smoothly and efficiently and can stop at any position.

[0003] The above-mentioned conveyor line system adopts aluminum rail track, which is light in material, low in cost and simple to manufacture and process. The only disadvantage is that it cannot climb a slope. If the production line needs to climb a slope, the functions of the components in the above-mentioned conveyor line or the structure of the conveyor line need to be modified.

[0004] Usually, the running track is installed at a high position, and a lifting device with a lifting function is used. At the workstation where the parts to be transported need to be lowered, the parts to be transported are lowered by the lifting structure on the lifting device. Although this method realizes the transportation of the parts to be transported (such as car bodies) at different spatial heights without occupying the ground space, it requires the installation of lifting function components on each lifting device, which is expensive. It is necessary to develop a new low-cost automobile assembly conveyor line that can realize the aerial transportation function at different heights without occupying the ground space. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a conveyor line guide rail lifting equipment and an automobile assembly conveyor line, which can realize the aerial transportation function at different heights, reduce the cost of the conveyor line, and do not occupy ground space.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A conveyor line guide rail lifting device, wherein the guide rails of the conveyor line include a transfer guide rail and a fixed high-position guide rail and a low-position guide rail, and the guide rail lifting device includes:

[0008] A guide frame assembly, wherein the upper end of the guide frame assembly is fixedly connected to the building structure above it, and the lower end of the guide frame assembly is suspended in the air;

[0009] A sliding frame assembly, slidably matched with the guide frame assembly, and used for installing the transfer guide rail;

[0010] A connecting frame assembly, wherein the upper portion of the connecting frame assembly is fixedly connected to the building structure, and the side of the connecting frame assembly is fixedly connected to the sliding frame assembly;

[0011] A driving mechanism, the driving mechanism is arranged on the connecting frame assembly and is drivingly connected to the sliding frame assembly, so that the sliding frame assembly is lifted and lowered vertically under the guidance of the guide frame assembly;

[0012] Wherein, when the sliding frame assembly is located at a high position, the transfer guide rail is docked with the high-position guide rail, and when the sliding frame assembly is located at a low position, the transfer guide rail is docked with the low-position guide rail.

[0013] As a further improvement of the above technical solution:

[0014] The guide frame assembly comprises a frame structure, on which four guide rails are vertically arranged, and each guide rail comprises two guide surfaces perpendicular to each other;

[0015] The sliding frame assembly includes a frame structure, which is located between the four guide rails. A plurality of roller assemblies are arranged on the frame structure, each of which is slidably matched with a corresponding guide surface. The plurality of roller assemblies limit the frame structure between the four guide rails in a horizontal direction.

[0016] The structure of a group of roller assemblies includes: a roller mounting plate, the upper end of the roller mounting plate is rotatably mounted on the frame structure, the lower end of the roller mounting plate is movably connected to the frame structure, a roller member that slides with a corresponding guide surface is mounted on the roller mounting plate, a limiting member that cooperates with the lower end of the roller mounting plate is mounted on the frame structure, and the limiting member applies pressure to the roller mounting plate to keep the roller member in contact with the corresponding guide surface.

[0017] The limiting member includes a mounting block fixedly connected to the frame structure, and a bolt threadedly connected to the mounting block, an adjusting pressure ring threadedly connected to the bolt, a spring sleeved on the stud of the bolt, one end of the spring abuts against the adjusting pressure ring, and the other end of the spring abuts against the lower end of the roller mounting plate, and the spring is in a compressed state to maintain the tendency of the roller mounting plate to swing toward the guide surface.

[0018] The driving mechanism includes a driving motor fixedly mounted on the connecting frame assembly, and also includes two belts arranged horizontally and spaced apart, one end of each belt is connected to one side of the upper end of the guide frame assembly, and the other end of each belt is connected to the transmission shaft of the driving motor;

[0019] The sliding frame assembly is provided with a group of movable roller shafts, and the guide frame assembly above the movable roller shafts is provided with a group of fixed roller shafts. Each belt is U-shaped after being matched with the fixed roller shafts and the movable roller shafts, and bears the weight of the sliding frame assembly.

[0020] The high-position guide rail and the low-position guide rail are both fixedly installed via a fixed base;

[0021] The fixed base is provided with a horizontal guide structure, and the horizontal guide structure is used to limit the transfer guide rail from two mutually perpendicular directions of the horizontal plane when the end of the transfer guide rail approaches the end of the high-position guide rail or the low-position guide rail, so as to ensure that the transfer guide rail is aligned with the end of the high-position guide rail or the low-position guide rail and the central axis is located in the same vertical plane;

[0022] The sliding frame assembly is provided with a vertical alignment structure, and the vertical alignment structure is used to vertically align the end of the transfer guide rail with the high-position guide rail or the low-position guide rail.

[0023] The vertical alignment structure comprises a follower base fixedly connected to the sliding frame assembly, a swing motor is installed on the follower base, a swing block is rotatably installed at the end of the follower base, a clamping joint is installed at the swing end of the swing block, and the swing block is drivingly connected to the swing motor;

[0024] The fixed base is provided with a bayonet matched with the bayonet, and the swing motor is used to drive the swing block to swing. When the bayonet is embedded in the bayonet, the end of the transfer guide rail is vertically aligned with the high-position guide rail or the low-position guide rail.

[0025] The number of the swing motor is one and it is arranged in the middle of the follower base. The vertical alignment structure also includes a connecting rod and a rotating plate installed on the end of the transmission shaft of the swing motor. The edge of the rotating plate is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the swing block. The swing motor drives the rotating plate to swing, and drives the swing block to swing through the connecting rod.

[0026] The horizontal guide structure includes a first guide roller installed on the end of the follower base, and a longitudinal limit groove installed on one side of the fixed base, the longitudinal limit groove corresponds to the first guide roller, and a second guide roller is provided on the fixed base, the second guide roller is slidably matched with the end surface of the follower base, and the axes of the first guide roller and the second guide roller are parallel to the horizontal plane and perpendicular to each other.

[0027] An automobile assembly conveyor line comprises any of the conveyor line guide rail lifting equipment described above, and also comprises a loading trolley matched with the transfer guide rail, wherein the loading trolley is provided with a lifting device for lifting components to be conveyed.

[0028] The beneficial effects of the present invention are as follows:

[0029] The present invention has a compact and reasonable structure and is easy to operate. The guide frame assembly is suspended and a connecting frame assembly is arranged on one side of the guide frame assembly. While reinforcing the guide frame assembly, an installation space is provided for the driving mechanism, thereby reducing the overall weight of the components on the guide frame assembly. The driving mechanism drives the sliding frame assembly to rise and fall on the guide frame assembly, driving the transfer guide rail to dock with the low-position guide rail or the high-position guide rail, thereby realizing the lifting and transfer of the cargo trolley from a low position to a high position. The track lifting function is only arranged at the position that needs to be lifted in the conveyor line, which can increase the aerial transportation function of the conveyor line at different heights, reduce the cost of the conveyor line, and does not occupy ground space.

[0030] At the same time, the present invention also has the following advantages:

[0031] (1) An adjusting ring is provided on the bolt fixed relative to the frame structure, so that the compression state of the spring can be adjusted. The spring applies a variable pressure to the lower end of the roller mounting plate, so that each roller member can swing slightly as the flatness of the guide surface changes during the lifting and lowering process of the sliding frame assembly, and the roller member is always kept in contact with the guide surface, so that the movement process of the sliding frame assembly is smoother.

[0032] (2) A double belt fixed at one end is used in conjunction with a movable roller and a fixed roller to achieve the lifting and lowering of the sliding frame assembly, which reduces the overall weight of the drive mechanism and the load on the guide frame assembly. The two belts evenly apply the driving force to the sliding frame assembly, while increasing the safety of the drive mechanism.

[0033] (3) A horizontal guide structure and a vertical alignment structure are provided to improve the docking accuracy between the transfer guide rail and the high / low guide rail after the sliding frame assembly is raised / lowered into place, so that the cargo trolley can run smoothly when passing through the docking position, thereby reducing the rigid impact force on the sliding frame assembly and the guide frame assembly caused by vibration due to instability.

[0034] (4) During the docking process between the transfer guide rail and the high-position guide rail or the low-position guide rail, the limiter equipped with a spring can absorb the deformation or displacement of the follower base, and combined with the micro-deformation of the belt, the rigid force is converted into elastic force without changing the sliding fit between the sliding frame assembly and the guide rail. As a whole, the rigid stress points in the guide rail lifting equipment are reduced to a minimum, especially greatly improving the structural safety of the guide frame assembly with a suspension setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is the front view of the present invention (when the sliding frame assembly is in the high position).

[0036] Figure 2It is a side view of the present invention (when the sliding frame assembly is in a high position).

[0037] Figure 3 It is a top view of the present invention.

[0038] Figure 4 It is the front view of the present invention (when the sliding frame assembly is in the low position).

[0039] Figure 5 It is a side view of the present invention (when the sliding frame assembly is in the low position).

[0040] Figure 6 It is a schematic diagram (top view) of the assembly structure of the sliding frame assembly and the guide rail of the present invention.

[0041] Figure 7 It is a structural schematic diagram (side view) of the sliding frame assembly and the guide frame assembly of the present invention.

[0042] Figure 8 for Figure 7 A partial enlarged view of point A in the middle.

[0043] Fig. 9 Schematic diagram of the structure of a roller assembly according to an embodiment of the present invention.

[0044] Fig.10 Schematic diagram of the structure of a roller assembly according to another embodiment of the present invention.

[0045] Fig.11 It is a schematic structural diagram of the vertical alignment structure and the horizontal guide structure of the present invention (the part that moves with the transfer guide rail).

[0046] Fig.12 It is a structural schematic diagram of the vertical alignment structure and the horizontal guide structure of the present invention (when the transfer guide rail is docked with the high-position or low-position guide rail).

[0047] Among them: 1. Building structures;

[0048] 2. Guide frame assembly; 21. Frame structure; 22. Guide rail; 220. Guide surface; 23. Fixed roller shaft; 24. Auxiliary steering roller shaft;

[0049] 3. Sliding frame assembly; 31. Frame structure; 32. Roller assembly; 321. Roller mounting plate; 322. Roller member; 323. Limiting member; 3231. Mounting block; 3232. Bolt; 3233. Adjusting pressure ring; 3234. Spring; 33. Moving roller shaft;

[0050] 4. vertical alignment structure; 41. follower base; 42. swing motor; 43. rotating plate; 44. connecting rod; 45. card joint; 46. swing block;

[0051] 5. Transfer rail; 6. Carrying trolley; 7. Lifting device; 8. Connecting frame assembly;

[0052] 9. Driving mechanism; 91. Driving motor; 92. Belt; 93. Belt break detection structure; 94. Winding roller;

[0053] 10. Fixed base; 101. Clamp; 102. Second guide roller; 103. Longitudinal limit groove; 104. First guide roller. DETAILED DESCRIPTION

[0054] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0055] like Figure 1-Figure 5 As shown, three views of the conveyor line guide rail lifting equipment in one embodiment of the present invention, wherein the guide rails of the conveyor line include a transfer guide rail 5 and fixed high-position guide rails and low-position guide rails, the high-position guide rails, the low-position guide rails and the transfer guide rails 5 have the same specifications and are used to cooperate with the movement of the cargo trolley 6, and the conveyor line guide rail lifting equipment includes: a guide frame assembly 2, a sliding frame assembly 3, a connecting frame assembly 8 and a driving mechanism 9.

[0056] The guide frame assembly 2 is located between the high guide rail and the low guide rail. The high guide rail and the low guide rail are not shown in the drawings. The high guide rail and the low guide rail are located on both sides of the guide rail lifting equipment station. The upper end of the guide frame assembly 2 is fixedly connected to the building structure 1 above it, and the lower end of the guide frame assembly 2 is suspended. The space below the guide frame assembly 2 can be used for other conveying equipment to pass through, thereby increasing space utilization;

[0057] The sliding frame assembly 3 is slidably matched with the guide frame assembly 2. The sliding frame assembly 3 is used to install the transfer guide rail 5. The transfer guide rail 5 is driven to rise and fall by the lifting and lowering of the sliding frame assembly 3.

[0058] A connecting frame assembly 8, the upper part of which is fixedly connected to the building structure 1, and the side of which is fixedly connected to the sliding frame assembly 3. The building structure 1 may be a top frame of a workshop, and the connecting frame assembly 8 is located on the side of the sliding frame assembly 3 and avoids the conveying direction of the transfer guide rail 5;

[0059] The driving mechanism 9 is arranged on the connecting frame assembly 8 and is in driving connection with the sliding frame assembly 3, so that the sliding frame assembly 3 is lifted and lowered vertically under the guidance of the guide frame assembly 2, and the height difference between the high-position guide rail and the low-position guide rail is consistent with the lifting stroke of the sliding frame assembly 3;

[0060] When the sliding frame assembly 3 is located at a high position, the transfer guide rail 5 is docked with the high-position guide rail, and when the sliding frame assembly 3 is located at a low position, the transfer guide rail 5 is docked with the low-position guide rail.

[0061] The guide rail lifting equipment includes a guide rail lifting equipment control system, which is integrated with the control system of the entire conveyor line to coordinate and control the lifting of the sliding frame assembly 3. The equipment control system includes electrical components that provide power for the entire guide rail lifting equipment and related in-place detection functions.

[0062] In addition, the connecting frame assembly 8 serves as the main installation platform for installing the driving mechanism 9. A maintenance ladder can be set on one side of the connecting frame assembly 8, and a guardrail can be set in the maintenance work area.

[0063] A guide frame assembly 2 is suspended and a connecting frame assembly 8 is arranged on one side of the guide frame assembly 2. While reinforcing the guide frame assembly 2, installation space is provided for the driving mechanism 9, and the overall weight of the components on the guide frame assembly 2 is reduced. The driving mechanism 9 drives the sliding frame assembly 3 to rise and fall on the guide frame assembly 2, and drives the transfer guide rail 5 to dock with the low-position guide rail or the high-position guide rail, thereby realizing the lifting and transfer of the loading trolley 6 from a low position to a high position. The track lifting function is only set at the position that needs to be lifted in the conveyor line, which can increase the aerial transportation function of the conveyor line at different heights, reduce the cost of the conveyor line, and does not occupy ground space.

[0064] In an exemplary embodiment, Figure 6-Figure 9 As shown, the guide frame assembly 2 includes a frame structure 21, and four guide rails 22 are vertically arranged on the frame structure 21. Each guide rail 22 includes two mutually perpendicular guide surfaces 220; the four guide rails 22 are located at the four vertices of the rectangle, such as Figure 6 As shown, the guide rail 22 can be made of a square steel pipe, and two adjacent side surfaces of the square steel pipe are the guide surfaces 220.

[0065] Continue reading Figure 6-Figure 9 The sliding frame assembly 3 includes a frame structure 31, which is located between the four guide rails 22. A plurality of roller assemblies 32 are arranged on the frame structure 31. Each roller assembly 32 is slidably matched with a corresponding guide surface 220. The plurality of roller assemblies 32 limit the frame structure 31 between the four guide rails 22 from the horizontal direction. There are at least two roller assemblies 32 corresponding to one guide rail 22, which correspond to two guide surfaces 220 of one guide rail 22, so that the frame structure 31 is slidably matched with the guide rail 22 and is limited in the four guide rails 22 from four different directions. For the same guide rail 22, the number of roller assemblies 32 can be four, and each two roller assemblies are respectively arranged at different heights of the frame structure 31, such as Figure 7 As shown, the number of contact positions between the sliding frame assembly 3 and the guide rail 22 in the longitudinal direction is increased, thereby improving stability.

[0066] Since the verticality of the four guide rails 22 and the assembly accuracy between two adjacent guide rails 22 directly affect the smoothness of the lifting process of the sliding frame assembly 3, the installation accuracy of the roller assembly 32 becomes a design point. In an exemplary embodiment, as shown in FIG. Figure 8-Figure 10 As shown, the structure of a group of roller assemblies 32 includes: a roller mounting plate 321, the upper end of the roller mounting plate 321 is rotatably mounted on the frame structure 31, the lower end of the roller mounting plate 321 is movably connected to the frame structure 31, a roller member 322 that slides with the corresponding guide surface 220 is mounted on the roller mounting plate 321, a limiting member 323 that cooperates with the lower end of the roller mounting plate 321 is mounted on the frame structure 31, and the limiting member 323 applies pressure to the roller mounting plate 321 to keep the roller member 322 in contact with the corresponding guide surface 220.

[0067] In this embodiment, the lower end of the roller mounting plate 321 and the frame structure 31 can be movably connected in the following manner: Fig. 9 As shown, the lower end of the roller mounting plate 321 is provided with an oblong hole in the horizontal direction, and a guide column that slides with the oblong hole is fixedly provided on the frame structure 31. The guide column can be a bolt, and one end of the bolt passes through the oblong hole and is prevented from falling off and limited by a nut or a gasket. When the limiting member 323 pushes the lower end of the roller mounting plate 321, the guide column moves in the oblong hole, thereby causing the roller member 322 to swing with the swing of the roller mounting plate 321.

[0068] The lower end of the roller mounting plate 321 can be movably connected to the frame structure 31 in the following manner: a horizontal oblong hole is set on the frame structure 31, and a guide column is fixedly set at the lower end of the roller mounting plate 321, and the guide column is inserted into the oblong hole. When the limit member 323 pushes the lower end of the roller mounting plate 321, the guide column moves in the oblong hole, thereby causing the roller member 322 to swing with the swing of the roller mounting plate 321.

[0069] In an exemplary embodiment, Fig. 9 As shown, the stopper 323 includes a mounting block 3231 fixedly mounted on the frame structure 31, the mounting block 3231 is provided with a screw hole, and a bolt 3232 is installed in the screw hole. By adjusting the position of the bolt 3232 relative to the mounting block 3231, the end of the bolt 3232 is pressed against the lower end of the roller mounting plate 321, so that the roller member 322 fits the guide surface 220. This stopper 323 requires manual adjustment of the bolt 3232 during equipment installation and commissioning until the sliding frame assembly 3 slides up and down smoothly.

[0070] In this embodiment, by adjusting the position of the bolt 3232 on the limit member 323, the roller mounting plate 321 is swung to change the installation position of the roller member 322, thereby realizing manual adjustment of the sliding fit accuracy between the sliding frame assembly 3 and the guide rail 22, improving the lifting and lowering smoothness of the sliding frame assembly 3, and further ensuring the structural safety of the suspended guide frame assembly 2.

[0071] In an exemplary embodiment, Fig.10 As shown, the limit member 323 includes a mounting block 3231 fixedly connected to the frame structure 31, and a bolt 3232 threadedly connected to the mounting block 3231, an adjusting pressure ring 3233 is threadedly connected to the bolt 3232, and a spring 3234 is sleeved on the stud of the bolt 3232, one end of the spring 3234 is abutted against the adjusting pressure ring 3233, and the other end of the spring 3234 is abutted against the lower end of the roller mounting plate 321, and the spring 3234 is in a compressed state, maintaining the tendency of the roller mounting plate 321 to swing toward the guide surface 220.

[0072] In this embodiment, an adjusting pressure ring 3233 is provided on the bolt 3232 fixed relative to the frame structure 31, and the compression state of the spring 3234 can be adjusted. The spring 3234 applies a variable pressure to the lower end of the roller mounting plate 321, so that during the lifting and lowering process of the sliding frame assembly 3, each roller member 322 can swing slightly as the flatness of the guide surface 220 changes, and the roller member 322 is always kept in contact with the guide surface 220, so that the movement process of the sliding frame assembly 3 is smoother.

[0073] In an exemplary embodiment, Figure 3 , Figure 6 , Figure 7 As shown, the driving mechanism 9 includes a driving motor 91 fixedly mounted on the connecting frame assembly 8, and also includes two belts 92 arranged horizontally at intervals, one end of each belt 92 is connected to one side of the upper end of the guide frame assembly 2, and the other end of each belt 92 is connected to the transmission shaft of the driving motor 91;

[0074] A group of movable roller shafts 33 are arranged on the sliding frame assembly 3, and a group of fixed roller shafts 23 are arranged on the guide frame assembly 2 above the movable roller shafts 33. Each belt 92 is U-shaped after being matched with the fixed roller shafts 23 and the movable roller shafts 33, and bears the weight of the sliding frame assembly 3.

[0075] In this embodiment, Figure 6 , Figure 7As shown, there are multiple movable rollers 33 in one group. When two belts 92 do not share the movable rollers 33, there are at least four movable rollers 33 in one group. There are multiple fixed rollers 23 in one group. When two belts 92 do not share the fixed rollers 23, there are at least four fixed rollers 23 in one group. The fixed rollers 23 are located above the movable rollers 33 and deviate from the position of one roller diameter to keep the belt 92 in the vertical direction. An auxiliary steering roller 24 is also provided between the fixed roller 23 and the drive motor 91. The belt 92 passes over the auxiliary steering roller 24 and is connected to the winding roller 94. The winding roller 94 is connected to the transmission shaft of the drive motor 91. Figure 3 As shown, there are two drive motors 91, one for backup, and two belts 92 increase the safety of the drive mechanism 9 and reduce the risk of the sliding frame assembly 3 falling due to the breakage of the belts 92.

[0076] Belt 92 is usually made of rubber, polyester, steel wire rope core lifting belt and other materials, with a certain micro-elongation to meet the requirements of lifting accuracy.

[0077] A double belt 92 fixed at one end is used in cooperation with a movable roller shaft 33 and a fixed roller shaft 23 to realize the lifting and lowering of the sliding frame assembly 3, which reduces the overall weight of the driving mechanism 9 and reduces the force load of the guide frame assembly 2. The two belts 92 make the driving force evenly applied to the sliding frame assembly 3, while increasing the safety of the driving mechanism 9.

[0078] During the operation of the guide rail lifting equipment, the drive motor 91 rotates in the forward direction, the winding roller 94 rotates the winding belt 92, and the belt 92 becomes shorter and shorter, thereby driving the sliding frame assembly 3 to rise. When the drive motor 91 rotates in the reverse direction, the winding roller 94 rotates in the reverse direction, releasing the wound belt 92, and the sliding frame assembly 3 descends due to its own gravity.

[0079] The connection between one end of each belt 92 and the upper end of the guide frame assembly 2 can be fixedly connected. In an exemplary embodiment, Figure 3 As shown, each belt 92 is connected to the guide frame assembly 2 via a broken belt detection structure 93 for detecting whether the corresponding belt 92 is broken.

[0080] The broken belt detection structure 93 includes a splint, one end of which is fixedly connected to the belt 92, and the other end of the splint is provided with a connecting shaft, which is slidably connected to the upper end of the guide frame assembly 2, and a limit head is provided at the end of the connecting shaft. The limit head and the guide frame assembly 2 are elastically connected by a spring, and a sensor is also provided at the upper end of the guide frame assembly 2 for detecting the position of the limit head. When the belt 92 is in a normal state, the spring is in a compressed state, and the limit head is in a normal position. When the belt 92 breaks, the spring is extended and the limit head is out of the normal position, which is detected by the sensor and an alarm is issued to the lifting control system.

[0081] In an exemplary embodiment, Fig.12 As shown, the high-position guide rail and the low-position guide rail are both fixedly installed by a fixed base 10. Fig.12 The state when the transfer rail 5 and the high or low rail are connected. The fixed base 10 is fixedly arranged on the building structure 1.

[0082] See also Fig.11 , Fig.12 A horizontal guide structure is provided on the fixed base 10, and the horizontal guide structure is used to limit the transfer guide rail 5 from two mutually perpendicular directions of the horizontal plane when the end of the transfer guide rail 5 is close to the end of the high-position guide rail or the low-position guide rail, so as to ensure that the transfer guide rail 5 is aligned with the end of the high-position guide rail or the low-position guide rail and the central axis is located in the same vertical plane;

[0083] A vertical alignment structure 4 is provided on the sliding frame assembly 3, and the vertical alignment structure 4 is used to vertically align the end of the transfer guide rail 5 with the high-position guide rail or the low-position guide rail.

[0084] A horizontal guiding structure and a vertical alignment structure 4 are provided to improve the docking accuracy of the transfer guide rail 5 and the high / low guide rail after the sliding frame assembly 3 is lifted / lowered into place, so that the loading trolley 6 can run smoothly when passing through the docking position, thereby reducing the rigid impact force on the sliding frame assembly 3 and the guide frame assembly 2 due to vibration caused by instability.

[0085] In an exemplary embodiment, Fig.11 , Fig.12 As shown, the vertical alignment structure 4 includes a follower base 41 fixedly connected to the sliding frame assembly 3, a swing motor 42 is installed on the follower base 41, a swing block 46 is rotatably installed at the end of the follower base 41, a clamping joint 45 is installed at the swing end of the swing block 46, and the swing block 46 is drivingly connected to the swing motor 42;

[0086] The fixed base 10 is provided with a bayonet 101 which cooperates with the bayonet joint 45 . The swing motor 42 is used to drive the swing block 46 to swing. When the bayonet joint 45 is inserted into the bayonet 101 , the end of the transfer rail 5 is vertically aligned with the high rail or the low rail.

[0087] For example, the clamping joint 45 is a bearing or a roller, and the bayonet 101 is a U-shaped notch with an opening facing the horizontal direction. The bottom of the U-shaped notch matches the shape of the clamping joint 45, and a smooth arc surface is provided at the opening to adapt to the swing curve direction of the swing block 46 and play a guiding role. During the contact and matching process between the clamping joint 45 and the bayonet 101, the upper and lower positions of the ends of the follower base 41 are finely adjusted to achieve vertical alignment of the guide rail.

[0088] In an exemplary embodiment, Fig.11As shown, there is one swing motor 42, which is arranged in the middle of the follower base 41. The vertical alignment structure 4 also includes a connecting rod 44 and a rotating plate 43 installed on the end of the transmission shaft of the swing motor 42. The edge of the rotating plate 43 is hinged to one end of the connecting rod 44, and the other end of the connecting rod 44 is hinged to the swing block 46. The swing motor 42 drives the rotating plate 43 to swing, and drives the swing block 46 to swing through the connecting rod 44.

[0089] In this embodiment, swing blocks 46 are provided at both ends of the follower base 41. When the swing motor 42 is working, the two swing blocks 46 are synchronously driven to move by the connecting rods 44 on both sides of the swing motor 42. A set of power drive is adopted to realize the vertical alignment function of the transfer guide rail 5 and the high-position guide rail or the low-position guide rail, thereby reducing the equipment cost and making the impact force of the vertical alignment structure 4 on the sliding frame assembly 3 during the vertical movement of the guide rail more dispersed, thereby reducing the impact force on the suspended guide frame assembly 2.

[0090] For example, Fig.11 , Fig.12 As shown, the horizontal guide structure includes a first guide roller 104 installed at the end of the follower base 41, and a longitudinal limit groove 103 installed on one side of the fixed base 10, the longitudinal limit groove 103 corresponds to the first guide roller 104, and a second guide roller 102 is provided on the fixed base 10, the second guide roller 102 is slidably matched with the end surface of the follower base 41, and the axes of the first guide roller 104 and the second guide roller 102 are parallel to the horizontal plane and perpendicular to each other.

[0091] Among them, the axis of the first guide roller 104 is consistent with the length direction of the transfer guide rail 5, and the upper and lower ends of the longitudinal limit groove 103 are provided with guide openings. When the transfer guide rail 5 is close to the high-position guide rail or the low-position guide rail, the first guide roller 104 is guided to enter the longitudinal limit groove 103 to achieve Y-direction limitation; the axis of the second guide roller 102 is perpendicular to the length direction of the transfer guide rail 5. When the transfer guide rail 5 is close to the high-position guide rail or the low-position guide rail, the second guide roller 102 is slidably matched with the end face of the follower base 41 to achieve X-direction limitation. A guide block is provided on the end face of the follower base 41 corresponding to the second guide roller 102, and slopes are provided at the upper and lower ends of the side of the guide block for guiding the second guide roller 102.

[0092] During the docking process of the transfer rail 5 and the high-position rail or the low-position rail, due to assembly errors, the auxiliary docking of the horizontal guide structure and the vertical alignment structure 4 is required, and the docking of the transfer rail 5 and the corresponding rail is achieved after the docking of the follower base 41 and the fixed base 10. Since the fixed base 10 is fixedly arranged on the building structure 1, the assembly error will be reflected in the deformation or displacement of the follower base 41 during the docking process.

[0093] During the docking process of the transfer guide rail 5 and the high-position guide rail or the low-position guide rail, the limiter 323 provided with a spring 3234 can absorb the deformation or displacement of the follower base 41, and combined with the micro-deformation of the belt 92, the rigid force is converted into elastic force without changing the sliding fit between the sliding frame assembly 3 and the guide rail 22, thereby reducing the rigid stress points in the guide rail lifting equipment to a minimum as a whole, especially greatly improving the structural safety of the suspended guide frame assembly 2.

[0094] In an exemplary embodiment, the present application provides an automobile assembly conveyor line, the conveyor line guide rail lifting equipment of any of the above-mentioned embodiments of the automobile assembly conveyor line also includes a loading trolley 6 that cooperates with the transfer guide rail 5, and the loading trolley 6 is provided with a lifting device 7 for lifting the parts to be conveyed.

[0095] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A conveyor line guide rail lifting device, characterized in that: The guide rails of the conveyor line include a transfer guide rail (5) and a fixed high-position guide rail and a low-position guide rail, and the guide rail lifting device includes: A guide frame assembly (2), wherein the upper end of the guide frame assembly (2) is fixedly connected to the building structure (1) above it, and the lower end of the guide frame assembly (2) is suspended in the air; A sliding frame assembly (3) slidingly cooperates with the guide frame assembly (2) and is used for installing the transfer guide rail (5); A connecting frame assembly (8), wherein the upper portion of the connecting frame assembly (8) is fixedly connected to the building structure (1), and the side surface of the connecting frame assembly (8) is fixedly connected to the sliding frame assembly (3); A driving mechanism (9), the driving mechanism (9) being arranged on the connecting frame assembly (8) and being drivingly connected to the sliding frame assembly (3), so that the sliding frame assembly (3) is lifted and lowered vertically under the guidance of the guide frame assembly (2); Wherein, when the sliding frame assembly (3) is located at a high position, the transfer guide rail (5) is docked with the high-position guide rail, and when the sliding frame assembly (3) is located at a low position, the transfer guide rail (5) is docked with the low-position guide rail.

2. The conveyor line guide rail lifting device according to claim 1, characterized in that: The guide frame assembly (2) comprises a frame structure (21), four guide rails (22) are vertically arranged on the frame structure (21), and each guide rail (22) comprises two guide surfaces (220) perpendicular to each other; The sliding frame assembly (3) comprises a frame structure (31), the frame structure (31) is located between the four guide rails (22), a plurality of roller assemblies (32) are arranged on the frame structure (31), each group of roller assemblies (32) is slidably matched with a corresponding guide surface (220), and the plurality of roller assemblies (32) limit the frame structure (31) between the four guide rails (22) in a horizontal direction.

3. The conveyor line guide rail lifting device according to claim 2, characterized in that: The structure of a group of roller assemblies (32) comprises: a roller mounting plate (321), the upper end of the roller mounting plate (321) is rotatably mounted on the frame structure (31), the lower end of the roller mounting plate (321) is movably connected to the frame structure (31), a roller member (322) slidably matched with a corresponding guide surface (220) is mounted on the roller mounting plate (321), and a limiting member (323) matched with the lower end of the roller mounting plate (321) is mounted on the frame structure (31), and the limiting member (323) applies pressure to the roller mounting plate (321) to keep the roller member (322) in contact with the corresponding guide surface (220).

4. The conveyor line guide rail lifting device according to claim 3, characterized in that: The limiting member (323) comprises a mounting block (3231) fixedly connected to the frame structure (31), and a bolt (3232) threadedly connected to the mounting block (3231); an adjusting pressure ring (3233) is threadedly connected to the bolt (3232); a spring (3234) is sleeved on the stud of the bolt (3232); one end of the spring (3234) abuts against the adjusting pressure ring (3233), and the other end of the spring (3234) abuts against the lower end of the roller mounting plate (321); the spring (3234) is in a compressed state, maintaining the tendency of the roller mounting plate (321) to swing toward the guide surface (220).

5. The conveyor line guide rail lifting device according to claim 1, characterized in that: The driving mechanism (9) comprises a driving motor (91) fixedly mounted on the connecting frame assembly (8), and also comprises two belts (92) arranged horizontally at intervals, one end of each belt (92) being connected to one side of the upper end of the guide frame assembly (2), and the other end of each belt (92) being connected to a transmission shaft of the driving motor (91); The sliding frame assembly (3) is provided with a group of movable roller shafts (33), and the guide frame assembly (2) above the movable roller shafts (33) is provided with a group of fixed roller shafts (23). Each belt (92) is in a U shape after being matched with the fixed roller shafts (23) and the movable roller shafts (33), and bears the weight of the sliding frame assembly (3).

6. The conveyor line guide rail lifting device according to claim 1, characterized in that: The high-position guide rail and the low-position guide rail are both fixedly installed via a fixed base (10); The fixed base (10) is provided with a horizontal direction guide structure, and the horizontal direction guide structure is used to limit the transfer guide rail (5) from two mutually perpendicular directions on the horizontal plane when the end of the transfer guide rail (5) is close to the end of the high-position guide rail or the low-position guide rail, so as to ensure that the transfer guide rail (5) is aligned with the end of the high-position guide rail or the low-position guide rail and the central axis is located in the same vertical plane; The sliding frame assembly (3) is provided with a vertical alignment structure (4), and the vertical alignment structure (4) is used to vertically align the end of the transfer guide rail (5) with the high-position guide rail or the low-position guide rail.

7. The conveyor line guide rail lifting device according to claim 6, characterized in that: The vertical alignment structure (4) comprises a follower base (41) fixedly connected to the sliding frame assembly (3), a swing motor (42) is installed on the follower base (41), a swing block (46) is rotatably installed at the end of the follower base (41), a clamping joint (45) is installed at the swing end of the swing block (46), and the swing block (46) is drivingly connected to the swing motor (42); The fixed base (10) is provided with a bayonet (101) that cooperates with the bayonet joint (45); the swing motor (42) is used to drive the swing block (46) to swing; when the bayonet joint (45) is inserted into the bayonet joint (101), the end of the transfer guide rail (5) is vertically aligned with the high-position guide rail or the low-position guide rail.

8. The conveyor line guide rail lifting device according to claim 7, characterized in that: The number of the swing motor (42) is one and is arranged in the middle of the follower base (41). The vertical alignment structure (4) also includes a connecting rod (44) and a rotating plate (43) installed on the end of the transmission shaft of the swing motor (42). The edge of the rotating plate (43) is hinged to one end of the connecting rod (44), and the other end of the connecting rod (44) is hinged to the swing block (46). The swing motor (42) drives the rotating plate (43) to swing, and drives the swing block (46) to swing through the connecting rod (44).

9. The conveyor line guide rail lifting device according to claim 6, characterized in that: The horizontal guide structure comprises a first guide roller (104) installed at the end of the follower base (41), and a longitudinal limit groove (103) installed at one side of the fixed base (10), wherein the longitudinal limit groove (103) corresponds to the first guide roller (104), and a second guide roller (102) is arranged on the fixed base (10), and the second guide roller (102) is slidably matched with the end surface of the follower base (41), and the axes of the first guide roller (104) and the second guide roller (102) are parallel to the horizontal plane and perpendicular to each other.

10. An automobile assembly conveyor line, characterized in that: It comprises the conveyor line guide rail lifting device as described in any one of claims 1 to 9, and also comprises a loading trolley (6) cooperating with the transfer guide rail (5), and the loading trolley (6) is provided with a lifting device (7) for lifting the parts to be transported.

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