Frame rail conveying and turning device and method

Abstract

The present application relates to the technical field of automobile manufacturing, and more particularly to a vehicle frame rail conveying and overturning device and method. The device comprises a pair of driving mechanisms, each of which comprises a base, a driving wheel set rotatably connected to the base, a transmission mechanism meshingly connected to the driving wheel set, and a buffer mechanism rotatably connected to the sidewall of the base. The driving wheel sets of the two driving mechanisms are transmissionally connected to a motor assembly on one side. The method comprises placing a rail on the top surface of the transmission mechanism at the front end of the vehicle frame rail conveying and overturning device, conveying the rail to a designated station, observing and adjusting the tension of the chain during the conveying, buffering and overturning the rail after it reaches the designated station, and hoisting the rail away to complete the conveying and overturning. The present application has the automatic overturning function, can effectively buffer and is safe and reliable, and solves the problems of the traditional rail storage device in overturning, impact, wear and tear, synchronization and overload protection, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a vehicle frame longitudinal beam conveying and turning device and method. Background Art

[0002] In the truck production process, the frame longitudinal beam is one of the core components, and its storage and transportation processes must meet the requirements of efficiency and safety. However, traditional longitudinal beam storage equipment mostly adopts a static structure, which makes it difficult to achieve automatic flipping and slow lowering. Manual operation is usually required to adjust the angle, which not only increases the difficulty of operation but also poses a safety hazard. In addition, due to the heavy weight of the longitudinal beam, it is prone to impact during transportation and storage, causing wear and tear on the chain and transmission system, affecting the life of the equipment. Existing devices generally lack synchronous motion control and overload protection measures. When the longitudinal beam falls or is unevenly stressed, the chain is prone to loosening or breaking, posing a significant safety risk.

[0003] CN113955365B discloses a bidirectional turning mechanism for truck longitudinal beams used in automated warehouses. The mechanism comprises a frame, a motor bracket, a first turning power transmission mechanism, a first turning mechanism, a second turning power transmission mechanism, a second turning mechanism, a clamping power transmission mechanism, and a rotating elastic clamping mechanism. However, this prior art can only turn the longitudinal beam 180°, not 90°.

[0004] CN207618540U discloses a main beam flipping, buffering, and conveying device, comprising a flipping unit, a buffering unit, and a conveying unit. The first part of the device is the flipping unit, which is driven by a reduction motor, chain-driven, and controlled by a travel switch to achieve 90-degree flipping of the main beam. A solenoid valve controls the extension and retraction of the rod end of the cylinder, driving the main beam up and down. Limit switches, travel switches, and mechanical protection are installed at each position of the main beam flipping and lifting. The second part of the device is the buffering unit, which is driven by a reduction motor, conveyed by a large-pitch double-loaded roller chain, and controlled by a photoelectric switch to buffer the main beam. The buffering unit is designed with a certain slope to accommodate the height difference between the front and rear workstations. The third part of the device is the conveying unit, which is driven by a reduction motor, chain-driven, industrial roller conveying, and controlled by a photoelectric switch to convey the main beam. The control unit controls the drive motor in response to calls from subsequent production stations, enabling unmanned automatic operation of the device. However, this prior art lacks buffering and protective structures during the flipping and conveying process, failing to address the issues of the existing equipment's insufficient descent control and impact resistance. Summary of the Invention

[0005] The purpose of the present invention is to provide a frame longitudinal beam conveying and turning device and method, which has an automatic turning function, can effectively buffer and is safe and reliable; and solves the problems of traditional longitudinal beam storage equipment in turning, impact, wear, synchronization and overload protection.

[0006] The present invention provides the following solutions

[0007] A frame longitudinal beam conveying and turning device includes a pair of driving mechanisms, each of the driving mechanisms includes a base, a driving wheel group is rotatably connected to the base, a transmission mechanism is meshedly connected to the driving wheel group, and a buffer mechanism is rotatably connected to the side wall of the base; the driving wheel groups of the two driving mechanisms are transmission-connected to the opposite side of the motor assembly.

[0008] Furthermore, the driving wheel group includes a driving wheel and a driven wheel, the rotating shaft of the driving wheel is drivingly connected to the motor assembly, and both ends of the rotating shaft of the driven wheel are rotatably connected to an adjustment mechanism, and the adjustment mechanism is fixedly connected to the base; the transmission mechanism includes a chain, and the chain is meshed and connected with the driving wheel and the driven wheel, and a transmission plate is provided on the top surface of each section of the chain; the buffer mechanism includes a buffer rod, and the buffer rod is rotatably connected to the side wall of the base.

[0009] Setting up a buffer mechanism can significantly reduce the impact force when the longitudinal beam falls, avoiding equipment damage and operational risks caused by impact; setting up a transmission plate and adjustment mechanism reduces wear during equipment operation and extends the life of the chain and longitudinal beam.

[0010] Furthermore, the adjustment mechanism includes a fixed frame, which is a U-shaped structure, the lower surface of the fixed frame is fixedly connected to the upper surface of the base, the upper and lower inner walls of the fixed frame are fixedly connected with slide rails, and a movable bearing seat is slidably connected between the two slide rails, the movable bearing seat is rotatably connected to one end of the rotating shaft of the driven wheel, and the front end of the movable bearing seat is rotatably connected to a threaded rod, and a threaded hole matching the threaded rod is provided on the front end wall of the fixed frame, and the threaded rod is exposed on the outside of the front end wall of the fixed frame through the threaded hole and is threadedly connected to the threaded hole.

[0011] By rotating the threaded rod, the movable bearing seat can be moved forward and backward along the slide rail, thereby adjusting the front and rear position of the driven wheel and the tightness of the chain to prevent the chain from being too tight and breaking or too loose and losing its load-bearing capacity.

[0012] Furthermore, it includes two driving mechanisms symmetrically arranged on the left and right, each driving mechanism includes the base, the base includes two supporting parts arranged opposite to each other, and a gap is provided between the two supporting parts; each supporting part is in the shape of an elongated strip, and the bottom surfaces of the two ends of the supporting part are respectively provided with a bottom plate, and the bottom plates are fixedly connected to the ground by bolts, and the upper surfaces of the two bottom plates are respectively fixedly connected with support columns, and a support beam is fixedly connected between the two support columns, the lower surface of the support beam is an arched surface, and the upper surface is a horizontal surface, and the support beam and the upper surfaces of the two support columns are jointly fixedly connected with a connecting plate, and the connecting plates of the two supporting parts extend to the gap in the middle at the middle and rear ends and are connected to each other.

[0013] A gap is provided between the two support parts for arranging the driving wheel set in the gap; the base plate is more firmly fixed to the ground, so that the device will not shake or displace; the lower surface of the support beam is an arched surface, which can increase the compressive bearing capacity; the connecting plates of the two support parts extend to the gap in the middle at the middle and rear ends and are connected to each other, connecting the two support parts into a whole to better play a supporting role.

[0014] Furthermore, the driving wheel is provided in the gap behind the middle connecting part of the connecting plate, and the driven wheel is provided in the gap in front of the middle connecting part of the connecting plate; the centers of the driving wheel and the driven wheel are respectively provided with rotating shafts, and both ends of the rotating shaft of the driving wheel are rotatably connected to fixed bearing seats, and the two fixed bearing seats are respectively fixedly connected to the top surfaces of the connecting plates of the left and right support parts; both ends of the rotating shaft of the driven wheel are rotatably connected to adjustment mechanisms, and the adjustment mechanisms are respectively fixedly connected to the top surfaces of the connecting plates of the left and right support parts.

[0015] Setting a fixed bearing seat can make the rotation of the driving wheel smoother and reduce wear and noise; the front and rear position of the driven wheel can be adjusted through the adjustment mechanism, thereby adjusting the tightness of the chain.

[0016] Furthermore, a flip plate is provided circumferentially behind the driving wheel, and a protective cover is provided on the upper front of the driven wheel, and the left and right sides of the bottom surface of the protective cover are fixedly connected to the top surface of the adjustment mechanism at the corresponding position respectively; a stop arm is fixedly connected to the upper surface of the rear end of the connecting plate of the base, and the stop arm is L-shaped. The stop arm and the flip plate form a flip groove, and the flipped longitudinal beam can be placed in the flip groove; a support frame is fixedly connected to the middle of the connecting plate of the base, and the top surface of the support frame can be in sliding contact with the chain above.

[0017] A flip plate is provided around the rear of the driving wheel, and the longitudinal beam can slide downward along the flip plate and flip from horizontal to vertical. A protective cover is provided to ensure the safety of the operator and avoid accidental contact. The support frame can support the chain when it is bent under force to prevent the chain from breaking due to excessive pressure.

[0018] Furthermore, the buffer mechanism also includes a cylinder, which is fixedly connected to the outer wall of the support beam of the base, the telescopic end of the cylinder is connected to the buffer rod through a movable hinge, and the lower end of the buffer rod is pivotally connected to the support beam; the upper part of the buffer rod is higher than the top surface of the transmission mechanism.

[0019] The cylinder is connected to the buffer lever by a movable hinge, which can reduce the impact when the longitudinal beam falls and protect the durability of the longitudinal beam and the chain; the buffer lever is vertically arranged, and the upper part of the buffer lever is higher than the top surface of the transmission mechanism, so that when the longitudinal beam reaches the flip plate and is about to flip, it contacts the buffer lever and starts buffering.

[0020] Furthermore, the motor assembly includes a drive motor, which is driven and connected to the drive wheel assembly via an output shaft and a synchronous belt, and an overrunning clutch is provided in the middle of the output shaft.

[0021] The overrunning clutch reduces failures caused by overload and ensures stable operation of the equipment under different loads.

[0022] Furthermore, the output shaft includes a driving shaft directly connected to the driving motor and a safety shaft connected to the driving wheel through a synchronous belt, and the overrunning clutch is provided between the driving shaft and the safety shaft; the overrunning clutch includes a limiting flange, which is fixedly connected to the free end of the driving shaft; the outside of the free end of the driving shaft is rotatably sleeved with a movable flange, and the movable flange is stopped on the limiting flange; the overrunning clutch also includes an armature plate, the free end face of the driving shaft is in pressure contact with the inner surface of the armature plate; the outer surface of the armature plate is in pressure contact with an extrusion block, the outer surface of the armature plate is provided with a limiting groove matching the extrusion end of the extrusion block, and the extrusion end of the extrusion block is limited in the limiting groove; the connecting end of the safety shaft is provided with a mounting port, the extrusion block is sleeved in the mounting port, and the extrusion end of the extrusion block is provided with an extrusion flange along the circumferential direction, and the extrusion flange is stopped on the outer wall edge of the mounting port; the outer wall of the mounting port is fixedly connected with a fixing flange along the circumferential direction, and the fixing flange is connected to the movable flange by a limiting bolt and an adjusting bolt.

[0023] The driving shaft drives the armature piece and the safety shaft to rotate through friction. When the pressure on the transmission mechanism is overloaded, the torsional force of the driving shaft exceeds the static friction between it and the armature piece, and the driving shaft will rotate relative to the safety shaft to avoid damage to the motor due to excessive torsional force; the limit bolt is used to limit the rotation of the fixed flange relative to the movable flange, and the adjusting bolt is used to adjust the distance between the two flanges, thereby adjusting the degree of compression between the armature piece and the driving shaft.

[0024] A method for conveying and turning a frame longitudinal beam, based on the above-mentioned frame longitudinal beam conveying and turning device, comprises the following steps:

[0025] Placing the longitudinal beam on the top surface of the transmission mechanism at the front end of the frame longitudinal beam conveying and turning device;

[0026] Transport the longitudinal beam to the designated workstation, and observe and adjust the tension of the chain during the process;

[0027] After the longitudinal beam arrives at the designated workstation, it is buffered and turned over;

[0028] Lift the longitudinal beam away to complete the transportation and flipping.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The frame longitudinal beam conveying and flipping device and method provided by the present invention have a high degree of automation. After power is turned on, the automatic cyclic flipping device can realize 90° automatic flipping of the longitudinal beam, effectively reducing manual intervention; it is safer, and the provision of a buffer mechanism can greatly reduce the impact force when the longitudinal beam falls, avoiding equipment damage and operation risks caused by impact; it has a long service life, and the provision of a transmission plate and an adjustment mechanism for adjusting the tightness of the chain reduces wear during equipment operation and extends the life of the chain and the longitudinal beam; production efficiency is improved, the automated design greatly shortens the operation time, improves the storage and conveying efficiency of the longitudinal beam, and ensures efficient operation of the production line; stability is enhanced, and the provision of an overrunning clutch reduces failures caused by overload, ensuring stable operation of the equipment under different loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Attachment Figure 1 This is a schematic diagram of the overall structure of the frame longitudinal beam conveying and turning device of the present invention;

[0033] Attachment Figure 2 This is a partial structural diagram of the frame longitudinal beam conveying and turning device of the present invention;

[0034] Attachment Figure 3 This is a schematic top view of the partial structure of the frame longitudinal beam conveying and turning device of the present invention;

[0035] Attachment Figure 4 It is a schematic side view of the partial structure of the frame longitudinal beam conveying and turning device of the present invention;

[0036] Attachment Figure 5 Schematic diagram of the top view of the motor assembly of the present invention;

[0037] Attachment Figure 6 This is a schematic diagram of the explosion structure of the overrunning clutch of the present invention;

[0038] Attachment Figure 7 Schematic diagram of the cross-sectional structure of the overrunning clutch of the present invention;

[0039] Attachment Figure 8 This is a schematic diagram of the frame longitudinal beam conveying and flipping method of the present invention.

[0040] In the picture:

[0041] 1-driving mechanism, 11-base, 111-support part, 1111-bottom plate, 1112-support column, 1113-support beam, 1114-connecting plate, 112-stop arm, 113-support frame, 12-driving wheel group, 121-driving wheel, 122-driven wheel, 123-flip plate, 124-protective cover, 13-adjusting mechanism, 131-fixed frame, 132-slide rail, 133-movable bearing seat, 134-threaded rod, 14-fixed bearing seat, 2-transmission mechanism , 21-chain, 22-transmission plate, 3-buffer mechanism, 31-cylinder, 32-buffer rod, 4-motor assembly, 41-drive motor, 42-output shaft, 421-driving shaft, 422-safety shaft, 423-overrunning clutch, 4231-limiting flange, 4232-movable flange, 4233-armature plate, 4234-extrusion block, 42341-extrusion flange, 4235-fixing flange, 4236-limiting bolt, 4237-adjusting bolt, 43-synchronous belt. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of this application more clear, this application will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0043] The terms used in the examples of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in the examples of this application and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two.

[0044] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0045] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0046] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0047] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0048] It should be noted in particular that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0049] Example 1, please refer to Figure 1 As shown, this embodiment provides a frame longitudinal beam conveying and flipping device, including a driving mechanism 1, a transmission mechanism 2, a buffer mechanism 3 and a motor assembly 4; the driving mechanism 1 is meshedly connected to the transmission mechanism 2, the buffer structure is fixedly connected to the driving mechanism 1, and the motor assembly 4 is driven and connected to the driving mechanism 1.

[0050] Specifically, see Figures 1 to 3As shown, the frame longitudinal beam conveying and turning device includes two driving mechanisms 1 symmetrically arranged on the left and right, each driving mechanism 1 includes a base 11, the base 11 includes two supporting parts 111 arranged opposite to each other, and a gap is provided between the two supporting parts 111; each supporting part 111 is long and narrow, and the bottom surfaces of the front and rear ends of the supporting part 111 are fixedly connected to the ground. In this embodiment, the bottom surfaces of the two ends of the supporting part 111 are respectively provided with bottom plates 1111, and the bottom plates 1111 are fixedly connected to the ground by bolts. The upper surfaces of the two bottom plates 1111 are respectively fixedly connected with support columns 1112, and a support beam 1113 is fixedly connected between the two support columns 1112. The lower surface of the support beam 1113 is arched and the upper surface is a horizontal surface; the support beam 1113 and the upper surfaces of the two support columns 1112 are commonly fixedly connected with a connecting plate 1114, and the connecting plates 1114 of the two supporting parts 111 extend to the middle gap at the middle and rear ends and are connected to each other.

[0051] A driving wheel 121 and a driven wheel 122 are respectively provided in the rear and front gaps of the central connection portion of the connecting plate 1114. A rotating shaft is provided at the center of each of the driving wheel 121 and the driven wheel 122. The driving wheel 121's rotating shaft is rotatably connected to fixed bearing seats 14 at both ends. The two fixed bearing seats 14 are respectively fixedly connected to the top surfaces of the connecting plate 1114 of the left and right support portions 111. The driven wheel 122's rotating shaft is rotatably connected to adjustment mechanisms 13 at both ends. The adjustment mechanisms 13 are respectively fixedly connected to the top surfaces of the connecting plate 1114 of the left and right support portions 111. A flip plate 123 is circumferentially provided behind the driving wheel 121. The longitudinal beam can slide downward along the flip plate 123, flipping from a horizontal orientation to a vertical orientation. A protective cover 124 is circumferentially provided above and in front of the driven wheel 122. The bottom surface of the protective cover 124 is connected to the corresponding adjustment mechanism 13 on both sides.

[0052] The upper surface of the rear end of the connecting plate 1114 of the base 11 is fixedly connected with a stop arm 112, which is used to stop the flipped longitudinal beam to prevent it from falling and rolling. The stop arm 112 is L-shaped and forms a flip groove with the flip plate 123, which can accommodate the flipped longitudinal beam in the flip groove.

[0053] A motor assembly 4 is commonly connected between the two driving mechanisms 1 , and the motor assembly 4 is drivingly connected to the driving wheel 121 , and can drive the two driving mechanisms 1 to rotate synchronously.

[0054] Specifically, see Figure 4As shown, the transmission mechanism 2 includes a chain 21, which is sleeved on a driving wheel 121 and a driven wheel 122. The chain 21 is engaged with the tooth structures at the upper ends of the driving wheel 121 and the driven wheel 122. The driving wheel 121 drives the chain 21 to move in a circle and drives the driven wheel 122 to rotate. A support frame 113 is provided in the middle of the connecting plate 1114 of the base 11 of the driving mechanism 1, which is in sliding contact with the upper chain 21. A transmission plate 22 is provided on the outer side of the chain 21. In this embodiment, it is made of copper material, and nylon or other materials that are softer and more wear-resistant than steel can also be used. The transmission plate 22 is in direct contact with the longitudinal beam to provide additional buffering for the longitudinal beam and reduce wear of the chain 21.

[0055] See also Figure 2 As shown, a buffer mechanism 3 is fixedly connected to the outer wall of the support beam 1113 of the base 11, and the buffer mechanism 3 includes a cylinder 31. The cylinder 31 is fixedly connected to the outer wall of the support beam 1113, and the telescopic end of the cylinder 31 is connected to the buffer rod 32 through a movable hinge. The lower end of the buffer rod 32 is pivotally connected to the support beam 1113, and the buffer rod 32 is vertically arranged without contacting the longitudinal beam; when the longitudinal beam is transported to the edge of the flip groove by the transmission mechanism 2, the longitudinal beam contacts the upper part of the buffer rod 32, causing the buffer rod 32 to tilt backward. At this time, the cylinder 31 applies a forward pulling force to the buffer rod 32, thereby playing a buffering role. After the longitudinal beam is flipped and lifted out of the flip groove, the buffer rod 32 returns to the vertical position under the action of the pulling force of the cylinder 31.

[0056] See also Figure 4 As shown, the adjusting mechanism 13 includes a fixed frame 131, which is a U-shaped structure. The lower surface of the fixed frame 131 is fixedly connected to the connecting plate 1114 of the base 11, and the upper and lower inner walls of the fixed frame 131 are fixedly connected with a slide rail 132. A movable bearing seat 133 is slidably connected between the two slide rails 132. The movable bearing seat 133 is rotatably connected to one end of the rotating shaft of the driven wheel 122. The front end limit of the movable bearing seat 133 is rotatably connected with a threaded rod 134. A threaded hole is provided on the front end wall of the fixed frame 131, and the threaded rod 134 is exposed on the outside of the front end wall of the fixed frame 131 through the threaded hole. By rotating the threaded rod 134, the movable bearing seat 133 can be moved back and forth along the slide rail 132, thereby adjusting the front and rear position of the driven wheel 122, adjusting the tightness of the chain 21, and preventing the chain 21 from being too tight and breaking or too loose and losing its bearing capacity.

[0057] See also Figure 8 As shown, this embodiment also provides a frame longitudinal beam conveying and flipping method, based on the above-mentioned frame longitudinal beam conveying and flipping device, including the following steps:

[0058] Place the longitudinal beam on the top surface of the front transmission mechanism 2;

[0059] Transport the longitudinal beam to the designated workstation, and observe and adjust the tightness of the chain 21 during this process;

[0060] After the longitudinal beam arrives at the designated workstation, it is buffered and turned over;

[0061] Lift the longitudinal beam away to complete the transportation and flipping.

[0062] Specifically, first place the longitudinal beam processed in the previous process on the top surface of the transmission mechanism 2 at the front end of the frame longitudinal beam conveying and turning device;

[0063] The motor drives the driving wheel 121 to rotate, and the longitudinal beam is transported to the designated workstation at the rear end of the device through the chain 21 and the transmission plate 22. During the transportation, the tightness of the chain 21 should be observed at all times and adjusted in time by rotating the threaded rod 134 of the adjustment mechanism 13;

[0064] When the longitudinal beam reaches the designated position, it begins to slide downward along the flip plate 123 and flip, while contacting the buffer rod 32 of the buffer mechanism 3, causing the buffer rod 32 to tilt until the longitudinal beam contacts the bottom surface of the flip groove, completing the flip and coming to rest.

[0065] Finally, the longitudinal beam turned 90 degrees in the turning trough is lifted out of the turning trough and sent to the next process, thus completing the transportation and turning of the longitudinal beam.

[0066] After that, the buffer rod 32 is reset under the pulling force of the cylinder 31 and can continue to buffer the next longitudinal beam; the longitudinal beams can be placed periodically to the front end of the device according to the length of the process, and multiple longitudinal beams can be transported simultaneously on the transmission mechanism 2, realizing automated transportation and flipping, and improving assembly efficiency.

[0067] Example 2, please refer to Figure 5 As shown, this embodiment provides a frame longitudinal beam conveying and turning device, which adds an overrunning clutch protection mechanism on the basis of embodiment 1.

[0068] Specifically, the transmission mechanism 2 can transport multiple longitudinal beams at the same time, and overload may occur. Therefore, in this embodiment, the driving motor 41 drives the driving wheel 121 through the output shaft 42 and the synchronous belt 43. An overrunning clutch 423 is provided on the output shaft 42 on each side to protect the motor in the event of overload; the overrunning clutch 423 includes a limiting flange 4231, a movable flange 4232, a fixed flange 4235, an armature plate 4233, an extrusion block 4234, a limiting bolt 4236 and an adjusting bolt 4237.

[0069] Specifically, see Figure 6 and Figure 7As shown, the output shaft 42 on each side of the drive motor 41 includes a driving shaft 421 directly connected to the driving motor 41, the free end of the driving shaft 421 is fixedly connected to the limiting flange 4231, the outside of the free end of the driving shaft 421 is rotatably sleeved with a movable flange 4232, the movable flange 4232 is stopped on the limiting flange 4231, the free end face of the driving shaft 421 is in pressure contact with the inner side face of the armature piece 4233, the outer side face of the armature piece 4233 is in pressure contact with the extrusion block 4234, the outer side face of the armature piece 4233 is provided with a limiting groove matching the extrusion end of the extrusion block 4234, the extrusion end of the extrusion block 4234 is limited in the limiting groove, the extrusion block 4234 is preferably made of polyurethane material, and rubber and other materials can also be used; the output shaft 42 on each side of the drive motor 41 also includes Safety shaft 422, the output end of the safety shaft 422 is connected to the driving wheel 121 through a synchronous belt 43, and the connecting end of the safety shaft 422 is provided with a mounting port, and the extrusion block 4234 is sleeved in the mounting port. The extrusion end of the extrusion block 4234 is provided with an extrusion flange 42341 along the circumferential direction, and the extrusion flange 42341 is stopped on the outer wall edge of the mounting port so that the extrusion end cannot enter the mounting port; the outer wall of the mounting port is fixedly connected with a fixed flange 4235, and the fixed flange 4235 is connected to the movable flange 4232 through a limiting bolt 4236 and an adjusting bolt 4237. The limiting bolt 4236 is used to limit the rotation of the fixed flange 4235 relative to the movable flange 4232, and the adjusting bolt 4237 is used to adjust the distance between the two flanges, thereby adjusting the degree of tightening of the armature piece 4233 and the driving shaft 421.

[0070] The driving shaft 421 drives the armature piece 4233 and the safety shaft 422 to rotate through friction. When the pressure on the transmission mechanism 2 is overloaded, the torsional force of the driving shaft 421 exceeds the static friction between it and the armature piece 4233, and the driving shaft 421 will rotate relative to the safety shaft 422 to avoid excessive torsional force damaging the motor.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A frame longitudinal beam conveying and turning device, characterized in that: The invention comprises a pair of driving mechanisms (1), each of the driving mechanisms (1) comprising a base (11), a driving wheel set (12) being rotatably connected to the base (11), a transmission mechanism (2) being meshedly connected to the driving wheel set (12), and a buffer mechanism (3) being rotatably connected to the side wall of the base (11); a motor assembly (4) being transmission-connected to opposite sides of the driving wheel sets (12) of the two driving mechanisms (1); The driving wheel assembly (12) includes a driving wheel (121) and a driven wheel (122), wherein the rotating shaft of the driving wheel (121) is drivingly connected to the motor assembly (4), and the two ends of the rotating shaft of the driven wheel (122) are rotatably connected to an adjustment mechanism (13), and the adjustment mechanism (13) is fixedly connected to the base (11); the transmission mechanism (2) includes a chain (21), and the chain (21) is meshedly connected to the driving wheel (121) and the driven wheel (122), and a transmission plate (22) is provided on the top surface of each section of the chain (21); The buffer mechanism (3) includes a buffer rod (32), and the buffer rod (32) is rotatably connected to the side wall of the base (11); the buffer mechanism (3) also includes a cylinder (31), and the cylinder (31) is fixedly connected to the outer wall of the support beam (1113) of the base (11); the telescopic end of the cylinder (31) is connected to the buffer rod (32) through a movable hinge, and the lower end of the buffer rod (32) is pivotally connected to the support beam (1113); the upper part of the buffer rod is higher than the top surface of the transmission mechanism (2); The motor assembly (4) includes a drive motor (41), the drive motor (41) is connected to the drive wheel assembly (12) via an output shaft (42) and a synchronous belt (43), and an overrunning clutch (423) is provided in the middle of the output shaft (42); The output shaft (42) includes a driving shaft (421) directly connected to the driving motor (41) and a safety shaft (422) connected to the driving wheel set (12) via a synchronous belt (43), and an overrunning clutch (423) is provided between the driving shaft (421) and the safety shaft (422); the overrunning clutch (423) includes a limiting flange (4231), and the limiting flange (4231) is fixedly connected to the free end of the driving shaft (421); the outer portion of the free end of the driving shaft (421) is rotatably sleeved with a movable flange (4232), and the movable flange (4232) is stopped on the limiting flange (4231); the overrunning clutch (423) also includes an armature plate (4233), and the free end surface of the driving shaft (421) is aligned with the inner surface of the armature plate (4233). Side pressure contact; the outer side surface of the armature piece (4233) is in pressure contact with an extrusion block (4234), the outer side surface of the armature piece (4233) is provided with a limiting groove matching the extrusion end of the extrusion block (4234), and the extrusion end of the extrusion block (4234) is limitedly set in the limiting groove; the connection end of the safety shaft (422) is provided with a mounting opening, the extrusion block (4234) is sleeved in the mounting opening, and the extrusion end of the extrusion block (4234) is provided with an extrusion flange (42341) along the circumferential direction, and the extrusion flange (42341) is stopped on the outer wall edge of the mounting opening; the outer wall of the mounting opening is fixedly connected with a fixed flange (4235) along the circumferential direction, and the fixed flange (4235) is connected to the movable flange (4232) through a limiting bolt (4236) and an adjusting bolt (4237).

2. The frame longitudinal beam conveying and turning device according to claim 1, characterized in that: The adjusting mechanism (13) includes a fixed frame (131), the fixed frame (131) is a U-shaped structure, the lower surface of the fixed frame (131) is fixedly connected to the upper surface of the base (11), the upper and lower inner side walls of the fixed frame (131) are fixedly connected with slide rails (132), a movable bearing seat (133) is slidably connected between the two slide rails (132), the movable bearing seat (133) is rotatably connected to one end of the rotating shaft of the driven wheel (122), the front end of the movable bearing seat (133) is rotatably connected to a threaded rod (134), a threaded hole matching the threaded rod (134) is provided on the front end wall of the fixed frame (131), the threaded rod (134) is exposed on the outside of the front end wall of the fixed frame (131) through the threaded hole, and is threadedly connected to the threaded hole.

3. The frame longitudinal beam conveying and turning device according to claim 1, characterized in that: The invention comprises two driving mechanisms (1) symmetrically arranged on both sides, each of the driving mechanisms (1) comprising a base (11), the base (11) comprising two supporting parts (111) arranged opposite to each other, a gap being provided between the two supporting parts (111); each supporting part (111) is in an elongated strip shape, and bottom plates (1111) are provided on the bottom surfaces of both ends of the supporting part (111), the bottom plates (1111) are fixedly connected to the ground by bolts, the upper surfaces of the two bottom plates (1111) are respectively fixedly connected to supporting columns (1112), a supporting beam (1113) is fixedly connected between the two supporting columns (1112), the lower surface of the supporting beam (1113) is an arched surface, and the upper surface is a horizontal surface, the supporting beam (1113) and the upper surfaces of the two supporting columns (1112) are fixedly connected to a connecting plate (1114), and the connecting plates (1114) of the two supporting parts (111) extend toward the gap in the middle at the middle and rear ends and are connected to each other.

4. The frame longitudinal beam conveying and turning device according to claim 3, characterized in that: The driving wheel (121) is provided in the gap behind the middle connecting portion of the connecting plate (1114), and the driven wheel (122) is provided in the gap in front of the middle connecting portion of the connecting plate (1114); the centers of the driving wheel (121) and the driven wheel (122) are respectively provided with a rotating shaft, and both ends of the rotating shaft of the driving wheel (121) are rotatably connected to fixed bearing seats (14), and the two fixed bearing seats (14) are respectively fixedly connected to the top surfaces of the connecting plates (1114) of the left and right support parts (111); and the two ends of the rotating shaft of the driven wheel (122) are respectively rotatably connected to the top surfaces of the connecting plates (1114) of the left and right support parts (111).

5. The frame longitudinal beam conveying and turning device according to claim 4, characterized in that: A flip plate (123) is provided circumferentially behind the driving wheel (121), and a protective cover (124) is provided on the front upper side of the driven wheel (122). The left and right sides of the bottom surface of the protective cover (124) are respectively fixedly connected to the top surface of the adjustment mechanism (13) at the corresponding position; a stop arm (112) is fixedly connected to the upper surface of the rear end of the connecting plate (1114) of the base (11), and the stop arm (112) is L-shaped. The stop arm (112) and the flip plate (123) form a flip groove, and the flipped longitudinal beam can be accommodated in the flip groove; a support frame (113) is fixedly connected to the middle part of the connecting plate (1114) of the base (11), and the top surface of the support frame (113) can be in sliding contact with the chain (21) above.

6. A method for conveying and flipping a frame longitudinal beam, characterized in that: The frame longitudinal beam conveying and turning device according to any one of claims 1 to 5 comprises the following steps: Placing the longitudinal beam on the top surface of the transmission mechanism (2) at the front end of the vehicle frame longitudinal beam conveying and turning device; The longitudinal beam is transported to the designated workstation, and the tightness of the chain (21) is observed and adjusted during the process; After the longitudinal beam arrives at the designated workstation, it is buffered and turned over; Lift the longitudinal beam away to complete the transportation and flipping.

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