Conveyer line guide rail lifting device and automobile assembly conveyer line

Abstract

A conveying line guide rail lifting device and an automobile assembly conveying line, the guide rail of the conveying line comprises a switching guide rail, an upper guide rail and a lower guide rail, and 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; a sliding frame assembly, the sliding frame assembly is in sliding cooperation with the guide frame assembly and is used for mounting the switching guide rail; a connecting frame assembly, the upper part of the connecting frame assembly is fixedly connected with the building structure, and the side surface of the connecting frame assembly is fixedly connected with the sliding frame assembly; a driving mechanism, 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 is lifted along the vertical direction under the guidance of the guide frame assembly; when the sliding frame assembly is located at the upper position, the switching guide rail is in butt joint with the upper guide rail, and when the sliding frame assembly is located at the lower position, the switching guide rail is in butt joint with the lower guide rail, so that the aerial conveying function at different heights can be realized, the cost of the conveying line is reduced, and the ground space is not occupied.

Description

Technical Field

[0001] The present 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) utilizes individual electrically driven trolleys running on rails. Each trolley is equipped with an independent drive unit and intelligent controller, enabling autonomous movement along the rails. The EMS conveyor system primarily consists of a suspension (column) steel structure, running rails, a power supply system (contact or contactless), load trolleys, switches, custom-made spreaders, and an electrical control system. The EMS conveyor system is widely used in automotive assembly conveyor line technology. Its tracks utilize lightweight aluminum rails, and the spreaders are self-powered and powered by sliding guides, ensuring smooth and efficient operation and the ability to 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 slopes. If the production line needs to climb slopes, the functions of the components in the above-mentioned conveyor line or the structure of the conveyor line need to be modified.

[0004] Typically, the running track is installed at a high position, and a lifting device with lifting function is used. At the workstation where the part to be conveyed needs to be lowered, the lifting structure on the lifting device is used to lower the part to be conveyed. Although this method allows the conveying of parts to be conveyed (such as car bodies) at different heights without occupying ground space, it requires the installation of lifting components on each lifting device, which is expensive. There is a need to develop a new low-cost automobile assembly conveyor line that can achieve aerial conveying functions at different heights without occupying ground space. Summary of the Invention

[0005] In response to 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 conveying function at different heights, reduce the cost of the conveyor line, and do not occupy ground space.

[0006] The technical solutions adopted in the present invention are 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 is in sliding fit with the guide frame assembly and is used to mount the adapter rail;

[0010] A connecting frame assembly is fixedly connected with the building structure at the upper part and is fixedly connected with the sliding frame assembly at the side face;

[0011] A 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 is vertically lifted under the guidance of the guide frame assembly;

[0012] When the sliding frame assembly is at the high position, the adapter rail is in butt joint with the high rail, and when the sliding frame assembly is at the low position, the adapter rail is in butt joint with the low rail.

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

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

[0015] The sliding frame assembly comprises a frame body structure, and the frame body structure is located between the four guide rails, and a plurality of roller assembly groups are arranged on the frame body structure, each roller assembly group is in sliding fit with the corresponding guide surface, and the plurality of roller assembly groups limit the frame body structure between the four guide rails from the horizontal direction.

[0016] The structure of a roller assembly group comprises: a roller mounting plate, the upper end of the roller mounting plate is rotatably mounted on the frame body structure, the lower end of the roller mounting plate is movably connected with the frame body structure, a roller piece in sliding fit with the corresponding guide surface is mounted on the roller mounting plate, a limiting piece cooperating with the lower end of the roller mounting plate is mounted on the frame body structure, the limiting piece applies pressure to the roller mounting plate to keep the roller piece in contact with the corresponding guide surface.

[0017] The limiting piece comprises a mounting block fixedly connected with the frame body structure, a bolt in threaded connection with the mounting block, an adjusting pressure ring in threaded connection with the bolt, a spring sleeved on the shank of the bolt, one end of the spring abutting against the adjusting pressure ring, and the other end of the spring abutting against the lower end of the roller mounting plate, and the spring is in a compressed state to keep the tendency of the roller mounting plate swinging towards the guide surface.

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

[0019] A set of dynamic roller shafts are arranged on the sliding frame assembly, and a set of fixed roller shafts are arranged on the guide frame assembly above the dynamic roller shafts, each belt is in U shape after cooperating with the fixed roller shafts and the dynamic roller shafts, and bears the weight of the sliding frame assembly.

[0020] The high-level guide rail and the low-level guide rail are fixedly installed through the fixed base;

[0021] The horizontal direction guide structure is arranged on the fixed base, and is used for limiting the adapter guide rail from two mutually perpendicular directions of the horizontal plane when the end of the adapter guide rail is close to the end of the high-level guide rail or the low-level guide rail, so as to ensure that the end of the adapter guide rail is aligned with the end of the high-level guide rail or the low-level guide rail and the center axes are located in the same vertical plane.

[0022] The vertical alignment structure is arranged on the sliding frame assembly, and is used for vertically aligning the end of the adapter guide rail with the high-level guide rail or the low-level guide rail.

[0023] The vertical alignment structure comprises a follow-up base fixedly connected with the sliding frame assembly, a swing motor is installed on the follow-up base, a swing block is rotationally installed at the end of the follow-up base, a clamping joint is installed at the swing end of the swing block, and the swing block is in transmission connection with the swing motor.

[0024] The fixed base is provided with a clamping opening matched with the clamping joint, and the swing motor is used for driving the swing block to swing, and when the clamping joint is embedded in the clamping opening, the end of the adapter guide rail is vertically aligned with the high-level guide rail or the low-level guide rail.

[0025] The number of the swing motor is one, and the swing motor is arranged at the middle part of the follow-up base, the vertical alignment structure further comprises a linkage rod and a rotating plate installed at the end of the transmission shaft of the swing motor, the edge of the rotating plate is hinged to one end of the linkage rod, the other end of the linkage rod is hinged to the swing block, the swing motor drives the rotating plate to swing, and the swing block is driven to swing through the linkage rod.

[0026] The horizontal direction guide structure comprises a first guide roller installed at the end of the follow-up base, and a longitudinal limiting groove installed at one side of the fixed base, the longitudinal limiting groove corresponds to the first guide roller, a second guide roller is arranged on the fixed base, the second guide roller is in sliding cooperation with the end surface of the follow-up 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] The automobile assembly conveying line comprises the conveying line guide rail lifting device in any one of the above aspects, and further comprises a load carrying trolley matched with the adapter guide rail, and a lifting appliance for hoisting a component to be conveyed is arranged on the load carrying trolley.

[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, installation space is provided for the driving mechanism, and the overall weight of the components on the guide frame assembly is reduced. 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 loading trolley from a low position to a high position. The track lifting function is only set at the parts of the conveyor line that need to be lifted and lowered, which can increase the aerial transportation function of the conveyor line at different heights, reduce the cost of the conveyor line, and do not occupy ground space.

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

[0031] (1) An adjusting pressure ring is provided on the bolt fixed relative to the frame structure, which can adjust the compression state of the spring. 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, always keeping the roller member in contact with the guide surface, making the movement process of the sliding frame assembly smoother and more stable.

[0032] (2) A double belt fixed at one end is used in conjunction with a movable roller and a fixed roller to realize 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 and increase the safety of the drive mechanism.

[0033] (3) A horizontal guide structure and a vertical alignment structure are provided to improve the docking accuracy of the transfer guide rail and the high / low guide rail after the sliding frame assembly is raised / lowered into position, so that the loading 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 provided 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, 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 guide frame assembly with a suspension arrangement. 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 the 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] Figure 9 Schematic diagram of the roller assembly structure according to an embodiment of the present invention.

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

[0045] Figure 11 It is a structural schematic 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] Figure 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; 24. Auxiliary steering roller;

[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. Follow-up base; 42. Swing motor; 43. Rotating plate; 44. Connecting rod; 45. Card joint; 46. Swing block;

[0051] 5. Transfer rail; 6. Carrying trolley; 7. Spreader; 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. Bayonet; 102. Second guide roller; 103. Longitudinal limit groove; 104. First guide roller. DETAILED DESCRIPTION

[0054] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0055] like Figures 1-5 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 a fixed high-position guide rail and a low-position guide rail. The high-position guide rail, the low-position guide rail and the transfer guide rail 5 have the same specifications and are used to cooperate with the movement of the loading trolley 6. 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 raised and lowered by the lifting of the sliding frame assembly 3.

[0058] The connecting frame assembly 8 has an upper portion fixedly connected to the building structure 1, and a side portion of the connecting frame assembly 8 is fixedly connected to the sliding frame assembly 3. The building structure 1 may be a top frame of a factory building of a production workshop. 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 provided 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 vertically lifted and lowered under the guidance of the guide frame assembly 2. The height difference between the high guide rail and the low 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; 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 and related in-place detection functions for the entire guide rail lifting equipment.

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

[0063] The guide frame assembly 2 is suspended, and a connecting frame assembly 8 is set on one side of the guide frame assembly 2. While reinforcing the guide frame assembly 2, it provides installation space for the driving mechanism 9 and reduces the overall weight of the components on the guide frame assembly 2. The driving mechanism 9 drives the sliding frame assembly 3 to rise and fall on the guide frame assembly 2, driving 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 parts that need 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 do not occupy ground space.

[0064] In an exemplary embodiment, Figures 6-9 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 guide surfaces 220 perpendicular to each other; the four guide rails 22 are located at the four vertices of the rectangle, as shown in FIG. Figure 6 As shown, the guide rail 22 can be made of a square steel tube, and two adjacent side surfaces of the square steel tube are the guide surfaces 220.

[0065] Continue reading Figures 6-9 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 provided on the frame structure 31. Each roller assembly 32 is slidably engaged with a corresponding guide surface 220. The plurality of roller assemblies 32 horizontally restrict the frame structure 31 between the four guide rails 22. There are at least two roller assemblies 32 corresponding to one guide rail 22, one corresponding to the two guide surfaces 220 of one guide rail 22. This allows the frame structure 31 to be slidably engaged with the guide rails 22 while being restricted 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, with two roller assemblies provided 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 precision between the adjacent two guide rails 22 directly affect the smoothness of the lifting process of the sliding frame assembly 3, the installation precision of the roller assembly 32 becomes a design point. In an exemplary embodiment, as shown in Figures 8-10 Fig. 1, the structure of a set 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 with the frame structure 31, the roller mounting plate 321 is provided with a roller piece 322 which is in sliding fit with the corresponding guide surface 220, and the frame structure 31 is provided with a limiting piece 323 which is in fit with the lower end of the roller mounting plate 321, the limiting piece 323 applies pressure to the roller mounting plate 321 for keeping the roller piece 322 in close contact with the corresponding guide surface 220.

[0067] In the embodiment, the movable connection between the lower end of the roller mounting plate 321 and the frame structure 31 can be as follows: Figure 9 As shown in Fig. 2, the lower end of the roller mounting plate 321 is provided with an oblong hole in the horizontal direction, and the frame structure 31 is fixedly provided with a guide post which is in sliding fit with the oblong hole. The guide post can be a bolt, and the end of the bolt passing through the oblong hole is prevented from being detached by a nut or a washer. When the limiting piece 323 pushes the lower end of the roller mounting plate 321, the guide post moves in the oblong hole, and then the roller piece 322 swings with the roller mounting plate 321.

[0068] The movable connection between the lower end of the roller mounting plate 321 and the frame structure 31 can also be as follows: an oblong hole is provided in the horizontal direction on the frame structure 31, a guide post is fixedly provided on the lower end of the roller mounting plate 321, and the guide post is inserted into the oblong hole. When the limiting piece 323 pushes the lower end of the roller mounting plate 321, the guide post moves in the oblong hole, and then the roller piece 322 swings with the roller mounting plate 321.

[0069] In an exemplary embodiment, as shown in Figure 9 Fig. 3, the limiting piece 323 includes a mounting block 3231 which is fixedly mounted on the frame structure 31, the mounting block 3231 is provided with a threaded hole, and a bolt 3232 is fitted in the threaded 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 piece 322 is in close contact with the guide surface 220. This limiting piece 323 needs to manually adjust the bolt 3232 to the sliding frame assembly 3 during equipment installation and debugging.

[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 manually adjusting 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, Figure 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 against the adjusting pressure ring 3233, and the other end of the spring 3234 is 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, which can adjust the compression state of the spring 3234. The spring 3234 applies variable pressure to the lower end of the roller mounting plate 321, so that each roller member 322 can swing slightly as the flatness of the guide surface 220 changes during the lifting and lowering process of the sliding frame assembly 3, 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 drive mechanism 9 includes a drive 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 drive motor 91;

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

[0075] In this embodiment, Figure 6 、 Figure 7As shown, the number of a set of the movable roller shafts 33 is multiple, and when the two belts 92 do not share the movable roller shafts 33, the number of a set of the movable roller shafts 33 is at least four; the number of a set of the fixed roller shafts 23 is multiple, and when the two belts 92 do not share the fixed roller shafts 23, the number of a set of the fixed roller shafts 23 is at least four, wherein the fixed roller shafts 23 are located above the movable roller shafts 33 with a deviation of one roller diameter, the vertical belts 92 are kept in the vertical direction, and the auxiliary turning roller shaft 24 is further arranged between the fixed roller shaft 23 and the driving motor 91, the belt 92 is wound over the auxiliary turning roller shaft 24 and connected with the winding roller 94, and the winding roller 94 is connected with the transmission shaft of the driving motor 91. As shown in FIG. 2, Figure 3 As shown, the driving motor 91 is two, one of which is used as a backup, and the two belts 92 increase the safety of the driving mechanism 9 and reduce the risk of the sliding carriage assembly 3 falling due to the belt 92 breaking.

[0076] The material of the belt 92 is usually selected from rubber, polyester, and steel wire rope core lifting belt, etc., and has a certain micro-elongation to meet the lifting precision requirement.

[0077] The two belts 92 and the movable roller shaft 33 and the fixed roller shaft 23 are used to realize the lifting of the sliding carriage assembly 3, which reduces the overall weight of the driving mechanism 9 and the stress load of the guide carriage assembly 2, and the two belts 92 make the driving force uniformly applied to the sliding carriage assembly 3 and increase the safety of the driving mechanism 9.

[0078] During the working process of the guide rail lifting device, the driving motor 91 rotates in the forward direction, the winding roller 94 rotates to wind the belt 92, the belt 92 is wound more and more short, thereby driving the sliding carriage assembly 3 to rise, when the driving motor 91 reverses, the winding roller 94 reverses to release the wound belt 92, and the sliding carriage assembly 3 descends under the action of its own gravity.

[0079] The connection mode of one end of each belt 92 with the upper end of one side of the guide carriage assembly 2 can be fixed connection, and in an exemplary embodiment, as shown in FIG. 3, Figure 3 As shown in FIG. 4, each belt 92 is connected with the guide carriage assembly 2 through the broken belt detection structure 93 for detecting whether the corresponding belt 92 is broken.

[0080] The broken belt detection structure 93 includes a clamp plate, one end of the clamp plate is fixedly connected with the belt 92, the other end of the clamp plate is provided with a connecting shaft, the connecting shaft is slidingly connected with the upper end of the guide carriage assembly 2, the end of the connecting shaft is provided with a limiting head, the limiting head and the guide carriage assembly 2 are elastically connected through a spring, and the upper end of the guide carriage assembly 2 is further provided with an inductor for detecting the position of the limiting head. When the belt 92 is in a normal state, the spring is in a compressed state, and the limiting head is in a normal position. When the belt 92 is broken, the spring is elongated, the limiting head deviates from the normal position, and the inductor detects the deviation and sends an alarm prompt to the lifting control system.

[0081] In an exemplary embodiment, Figure 12 As shown, the high guide rail and the low guide rail are both fixedly installed through the fixed base 10. Figure 12 The fixed base 10 is fixedly arranged on the building structure 1.

[0082] See Figure 11 、 Figure 12 A horizontal guide structure is provided on the fixed base 10. 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 approaches the end of the high guide rail or the low guide rail, so as to ensure that the transfer guide rail 5 is aligned with the end of the high guide rail or the low 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 guide 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 raised / lowered into position, 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 caused by vibration due to instability.

[0085] In an exemplary embodiment, Figure 11 、 Figure 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 mounted on the follower base 41, a swing block 46 is rotatably mounted on the end of the follower base 41, a clamping joint 45 is mounted on the swing end of the swing block 46, and the swing block 46 is in transmission connection with the swing motor 42;

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

[0087] For example, the clamping joint 45 is a bearing or roller, and the bayonet 101 is a U-shaped notch with a horizontal opening. The bottom of the U-shaped notch matches the shape of the clamping joint 45, and the opening is provided with a smooth arc surface to adapt to the swing curve direction of the swing block 46 and provide a guide. During the contact and engagement between the clamping joint 45 and the bayonet 101, the vertical position of the end of the follower base 41 is finely adjusted, thereby achieving vertical alignment of the guide rail.

[0088] In an exemplary embodiment, Figure 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 at 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 process of the guide rail more dispersed, thereby reducing the impact force on the suspended guide frame assembly 2.

[0090] For example, Figure 11 、 Figure 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, and the second guide roller 102 is slidably engaged with the end face 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 guide openings are provided at the upper and lower ends of the longitudinal limit groove 103. 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 into 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 slides 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 the upper and lower ends of the side of the guide block are provided with slopes for guiding the second guide roller 102.

[0092] During the docking process between the transfer rail 5 and the upper or lower rails, assembly errors may occur, necessitating the assistance of the horizontal guide structure and the vertical alignment structure 4. This is accomplished by docking the follower base 41 with the fixed base 10, thus completing the docking of the transfer rail 5 with the corresponding rail. Since the fixed base 10 is fixedly mounted on the building structure 1, assembly errors are 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 force 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, wherein the conveyor line guide rail lifting equipment of any of the above-described embodiments of the automobile assembly conveyor line further includes 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 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 modifications may be made within the scope of protection of the present invention.

Claims

1. A conveyor line guide rail lifting device, characterized by: 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) is slidably engaged 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 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 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); 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; The high-position guide rail and the low-position guide rail are both fixedly mounted 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) approaches the end of the high guide rail or the low guide rail, so as to ensure that the transfer guide rail (5) is aligned with the end of the high guide rail or the low 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; 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 card joint (45) is installed at the swing end of the swing block (46), and the swing block (46) is transmission-connected to the swing motor (42); The fixed base (10) is provided with a bayonet (101) that cooperates with the bayonet joint (45), and 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. 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). The horizontal direction 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), wherein 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), and the second guide roller (102) is slidably matched with the end face 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.

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 mutually perpendicular guide surfaces (220); The sliding frame assembly (3) includes a frame structure (31), the frame structure (31) is located between the four guide rails (22), and a plurality of roller assemblies (32) are provided on the frame structure (31), each roller assembly (32) slidingly cooperates 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) 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 is slidably engaged with a corresponding guide surface (220) is mounted on the roller mounting plate (321), and a limiting member (323) that is engaged 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) includes a driving motor (91) fixedly mounted on the connecting frame assembly (8), and also includes two belts (92) arranged horizontally and spaced apart, 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); A group of movable rollers (33) are provided on the sliding frame assembly (3), and a group of fixed rollers (23) are provided on the guide frame assembly (2) above the movable rollers (33). Each belt (92) forms a U-shape after being matched with the fixed rollers (23) and the movable rollers (33), and bears the weight of the sliding frame assembly (3).

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

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