Telescopic trolley structure

Abstract

The utility model relates to a telescopic trolley structure which comprises a plurality of fixed rails arranged in parallel, each fixed rail is provided with a movable telescopic moving trolley, one end of each telescopic moving trolley is provided with a connecting rod, and the adjacent connecting rods are connected through a special coupler. The connecting rod is connected with the telescopic moving trolley through a metal bearing seat, and the end part of the telescopic moving trolley is connected with a driving mechanism; the two ends of each fixed rail are each provided with a mechanical anti-collision limiting block. In the implementation process, the telescopic trolley structure is suitable for large stations, high in bearing capacity and easy to operate and maintain. Due to the fact that the driving mechanisms matched with the telescopic moving trolleys are connected to the ends of the telescopic moving trolleys, each telescopic moving trolley can be effectively driven independently, and the telescopic trolley structure has the advantages of being high in stability, easy to operate, low in maintenance cost, wide in applicability and high in market popularization value.

Description

Technical Field

[0001] This utility model relates to the technical field of automated conveying, specifically a telescopic trolley structure, and more particularly to an easily operable telescopic trolley structure for a ship's planar segmented structure. Background Technology

[0002] In the existing shipbuilding industry, based on the characteristics of the hull structure, shipyard production conditions, and construction process requirements, the hull is rationally divided into several hull structural sections that form independent assembly units. According to their shape, these can be categorized as planar sections, curved sections, and three-dimensional sections, etc.

[0003] For ship hull sections, the planar section assembly and welding production line is a crucial production line for hull assembly and welding. It is an indispensable means to automate assembly and welding work, and it is of great significance for shortening the shipbuilding cycle, reducing shipbuilding costs, and alleviating the labor intensity of workers. However, because planar sections are mostly large-sized splices and require provisions for cranes, safety passages, and transport aisles, the production line occupies a severely limited area.

[0004] Therefore, it is necessary to design an easy-to-operate telescopic trolley at safety passages and transport aisles. When there is a transport task, it can be retracted into the segmented work station, and when the planar segmented line is working, it can be quickly extended to support and widen the work station. Summary of the Invention

[0005] The purpose of this utility model is to provide an improved telescopic trolley structure. Through structural improvements, it can be applied to large workstations, while having high load-bearing capacity, being easy to operate and maintain, and exhibiting good operational stability of the telescopic step structure.

[0006] To achieve the above objectives, the technical solution of this utility model is: a telescopic trolley structure, characterized in that: the telescopic trolley structure includes several parallel fixed tracks, each fixed track is equipped with a movable telescopic trolley, each telescopic trolley has a connecting rod at one end, adjacent connecting rods are connected by a special coupling, the connecting rods are connected to the telescopic trolley by a metal bearing seat, and the end of the telescopic trolley is connected to a drive mechanism; each fixed track has a mechanical anti-collision limit block at both ends.

[0007] Preferably, the telescopic mobile trolley includes a mobile trolley body, the bottom of the mobile trolley body is provided with several sets of drive casters, the drive casters are connected to the mobile trolley body through caster connecting blocks, the top of the mobile trolley body is provided with several sets of evenly distributed directional rollers, and the caster connecting blocks are connected to the mobile trolley body through welded angle steel.

[0008] Furthermore, the drive mechanism includes a traveling support assembly and a high-performance transport roller chain disposed above the traveling support assembly. One end of the traveling support assembly and the high-performance transport roller chain is connected to a tensioning mechanism, and the other end of the traveling support assembly and the high-performance transport roller chain is connected to a power end assembly.

[0009] Furthermore, the drive mechanism is connected to the ground-mounted feet via several adjusting bolts, the walking support assembly is equipped with a sensor mounting bracket, the sensor mounting bracket is equipped with a sensor, and the high-performance transport roller chain is connected to the telescopic mobile trolley via the connecting shaft assembly.

[0010] Furthermore, the tensioning mechanism includes a tensioning connecting plate, a connecting shaft passing through the tensioning connecting plate, bearing seats and cover plates for restricting the axial movement of the connecting shaft at both ends, a spacer sleeve on the connecting shaft, and a driven sprocket in the middle of the connecting shaft.

[0011] Furthermore, the connecting shaft assembly includes a main body base and a chuck. The main body base and the chuck are connected by a connecting pin. The chuck is equipped with a copper sleeve that mates with the connecting pin. One end of the connecting pin is equipped with a large pressure plate. The chuck is equipped with a liftable ball head. One end of the ball head is equipped with a screw. The screw is equipped with a matching clamping screw. One end of the connecting rod is located inside the chuck. The connecting rod is limited by the lifting and lowering of the ball head.

[0012] Furthermore, the mechanical anti-collision limit block is composed of hollow rectangular steel bars, with top and bottom panels at both ends and reinforcing plates on the sides.

[0013] Compared with the prior art, the technical solution of this utility model not only improves the overall technical solution, but also includes many detailed improvements. Specifically, it has the following beneficial effects:

[0014] 1. The improved solution of this utility model includes a telescopic trolley structure comprising several parallel fixed tracks, each fixed track having a movable telescopic trolley, each telescopic trolley having a connecting rod at one end, adjacent connecting rods being connected by a special coupling, the connecting rods being connected to the telescopic trolleys by a metal bearing seat, and a drive mechanism being connected to the end of the telescopic trolley. Each telescopic trolley is driven by a single drive mechanism, which can ensure the consistency and coordination of the movement of multiple telescopic trolleys, while having a high safety factor and being able to cope with emergencies;

[0015] 2. In the technical solution of this utility model, the drive mechanism is connected to the ground-mounted feet by several adjusting bolts. The walking support assembly is equipped with a sensor mounting bracket, and the sensor mounting bracket is equipped with a sensor. The high-performance transport roller chain is connected to the telescopic mobile trolley through the connecting shaft assembly. Here, the drive mechanism and the telescopic mobile trolley are compactly matched, without occupying extra space, while ensuring the stable transportation of the telescopic mobile trolley and making installation and maintenance simple.

[0016] 3. In the structure of this utility model, the connecting shaft assembly includes a main base and a chuck. The main base and the chuck are connected by a connecting pin. The chuck is provided with a copper sleeve that mates with the connecting pin. One end of the connecting pin is provided with a large pressure plate. The chuck is provided with a liftable ball head. One end of the ball head is provided with a screw. The screw is provided with a matching clamping screw. One end of the connecting rod is set in the chuck. The connecting rod is limited by the lifting and lowering of the ball head. The assembly structure of the connecting shaft assembly and the connecting rod is ingenious and reasonable, ensuring the smooth operation of the structure, while also improving the service life and reducing the cost.

[0017] 4. This utility model has a simple structure, reasonable layout, is easy to use, has a wide range of applications, and is easy to promote and utilize. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0019] Figure 2 This is a schematic diagram of the structure of a telescopic mobile trolley in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the drive mechanism in one embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the tensioning mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the connecting shaft assembly of this utility model.

[0023] Figure 6 This is a schematic diagram of the mechanical anti-collision limiting block of this utility model.

[0024] Figure label:

[0025] 1 Telescopic mobile trolley, 2 Fixed track, 3 Connecting rod, 4 Metal bearing seat, 5 Special coupling, 6 Drive mechanism, 7 Mechanical anti-collision limit block;

[0026] 4-1 Mobile trolley body, 4-2 Directional rollers, 4-3 Drive casters, 4-4 Caster connecting block, 4-5 Welded angle steel;

[0027] 6-1 Tensioning mechanism, 6-2 Traveling support assembly, 6-3 High-performance transport roller chain, 6-4 Welded foot, 6-5 Adjusting bolt, 6-6 Connecting shaft assembly, 6-7 Power end assembly, 6-8 Sensor mounting bracket;

[0028] 7-1 Tensioner connecting plate, 7-2 Bearing housing, 7-3 Connecting shaft, 7-4 Cover plate, 7-5 Driven sprocket, 7-6 Spacer;

[0029] 8-1 Main base, 8-2 Connecting pin, 8-3 Copper sleeve, 8-4 Large pressure plate, 8-5 Clamp, 8-6 Ball head, 8-7 Screw, 8-8 Pressing screw. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] This utility model provides a telescopic trolley structure, see details below. Figure 1 The difference between this and existing technologies lies in the following: the telescopic trolley structure includes several parallel fixed tracks 2, each fixed track 2 is equipped with a movable telescopic trolley 1, each telescopic trolley has a connecting rod 3 at one end, adjacent connecting rods are connected by a special coupling 5, the connecting rods are connected to the telescopic trolley by a metal bearing seat 4, and the end of the telescopic trolley is connected to a cooperating drive mechanism 6, which can effectively drive each telescopic trolley individually. When the associated drive mechanisms work simultaneously, they can maintain the consistency and stability of the movement of all trolleys, achieving a better smooth transportation effect; each fixed track has a mechanical anti-collision limit block 7 at both ends to ensure safety.

[0032] In practice, this utility model is a large telescopic trolley that solves the problem of limited space in shipyards. Specifically, it is a telescopic trolley structure suitable for large workstations, with high load-bearing capacity, and easy operation and maintenance. Because the ends of the telescopic trolleys are connected to cooperating drive mechanisms, each telescopic trolley can be effectively driven independently. Therefore, the telescopic trolley structure has high stability, is simple to operate, has low maintenance costs, wide applicability, and high market promotion value.

[0033] Example 1

[0034] In this embodiment, the telescopic trolley structure includes several parallel fixed tracks 2, each fixed track is equipped with a movable telescopic trolley 1, each telescopic trolley has a connecting rod 3 at one end, adjacent connecting rods are connected by a special coupling 5, the connecting rods are connected to the telescopic trolley by a metal bearing seat 4, and the end of the telescopic trolley is connected to a cooperating drive mechanism 6, which can effectively drive each telescopic trolley individually to ensure smooth transportation; each fixed track has a mechanical anti-collision limit block 7 at both ends to ensure safety.

[0035] Specifically, the telescopic mobile trolley includes a mobile trolley body 4-1, with several sets of drive casters 4-3 at the bottom of the mobile trolley body. The drive casters are connected to the mobile trolley body via caster connecting blocks 4-4. The top of the mobile trolley body is provided with several sets of evenly distributed directional rollers 4-2. The caster connecting blocks are connected to the mobile trolley body via welded angle steel 4-5.

[0036] Furthermore, the drive mechanism 6 includes a traveling support assembly 6-2 and a high-performance transport roller chain 6-3 mounted above the traveling support assembly. One end of the traveling support assembly and the high-performance transport roller chain is connected to a tensioning mechanism 6-1, and the other end is connected to a power end assembly 6-7. The drive mechanism is connected to welded foot anchors 6-4 on the ground via several adjusting bolts 6-5. A sensor mounting bracket 6-8 is mounted on the traveling support assembly, and a sensor is mounted on the sensor mounting bracket. The high-performance transport roller chain is connected to the telescopic trolley via a connecting shaft assembly.

[0037] Furthermore, the tensioning mechanism includes a tensioning connecting plate 7-1, through which a connecting shaft 7-3 passes. At both ends of the connecting shaft are respectively fitted bearing seats 7-2 and cover plates 7-4 for restricting the axial movement of the connecting shaft. A spacer 7-6 is fitted on the connecting shaft, and a driven sprocket is located in the middle of the connecting shaft. The connecting shaft assembly 6-6 includes a main body base 8-1 and a chuck 8-5. The main body base and the chuck are connected by a connecting pin 8-2. A copper sleeve 8-3 that mates with the connecting pin is located inside the chuck. A large pressure plate 8-4 is located at one end of the connecting pin. A liftable ball head 8-6 is located inside the chuck. A screw 8-7 is located at one end of the ball head, and a matching clamping screw 8-8 is located on the screw. One end of the connecting rod is located inside the chuck, and the connecting rod is limited by the raising and lowering of the ball head.

[0038] Furthermore, the mechanical anti-collision limit block is composed of hollow rectangular steel bars, with top and bottom panels at both ends and reinforcing plates on the sides.

[0039] Therefore, this utility model has the following beneficial effects:

[0040] 1. It saves space in segmented production lines, reduces production and processing costs while meeting the functions of the production line. Moreover, this telescopic trolley is easy to operate, has low maintenance costs, wide applicability, and high market promotion value.

[0041] 2. The easy-to-operate telescopic trolley is initially designed to be located at the interval of the upper operating position, without taking up extra space; at the same time, the drive unit is located below the telescopic trolley, which not only makes the telescopic trolley stable to transport, but also makes installation and maintenance very convenient.

[0042] 3. The easy-to-operate telescopic trolley is driven by a single motor, which can ensure the consistency and coordination of the movement of multiple telescopic trolleys. It also features emergency braking, hard limit protection, and soft limit protection, providing a high safety factor and being able to cope with any emergencies.

[0043] 4. The optimized treatment of the material and structure of the fixed connecting shaft assembly and connecting rod not only makes the device operate more smoothly, but also extends the service life of the equipment.

[0044] 5. The directional rollers designed in the telescopic trolley not only reduce wear caused by hard contact during sheet transportation, but also provide good support. They are applicable to different workstations and have a wide range of applications.

[0045] Example 2

[0046] In this embodiment, the telescopic trolley structure includes several parallel fixed tracks. Each fixed track is equipped with a movable telescopic trolley. One end of each telescopic trolley is equipped with a connecting rod. Adjacent connecting rods are connected by a special coupling. The connecting rods are connected to the telescopic trolleys through metal bearing seats. The end of each telescopic trolley is connected to a cooperating drive mechanism, which can effectively drive each telescopic trolley individually to ensure smooth transportation. Each fixed track has a mechanical anti-collision limit block at both ends to ensure safety.

[0047] Specifically, the fixed track 2 is welded and fixed to the pre-embedded parts in the pit. During adjustment, a thin plate of the height to be adjusted is inserted, and then fixed with a steel plate and poured a second time to make the upper surface of the track flush with the ground. The rollers on the telescopic trolley 1 allow the trolley to move freely on the fixed track 2. The connecting rod 3 is fixed to the telescopic trolley 1 through the metal bearing seat 4. The special coupling 5 connects the connecting rods 3 in pairs to ensure that the telescopic trolley 1 maintains good synchronization during movement. The drive mechanism 6 is connected to the telescopic trolley 1 through the connecting shaft assembly to provide driving force for the whole. The mechanical anti-collision limit block 7 is welded to the ground to provide protection in case of emergencies and prevent personnel casualties and equipment damage caused by the trolley running off the track.

[0048] like Figure 2As shown, the telescopic mobile trolley 1 includes: a mobile trolley body 4-1, directional rollers 4-2, drive casters 4-3, caster connecting blocks 4-4, and welded angle steel 4-5. The telescopic mobile trolley 1 is composed of 10-meter-long 16# channel steel with several 10×80×160mm reinforcing plates in the middle to ensure overall strength and stability. A 10×160×200mm mounting plate is welded at the mounting point of the directional rollers to ensure stable force distribution during roller installation and movement. The directional rollers 4-2 consist of bushings, retaining rings, deep groove ball bearings, spacers, and connecting shafts, and are fixed to the mobile trolley body 4-1 with screws. Simulation analysis shows that arranging them at 2-meter intervals not only effectively ensures a constant force distribution on the driving trolley but also optimizes production costs. The driving casters 4-3 are cast from 35# steel and fixed to the caster connecting block 4-4 with high-strength bolts. The caster connecting block 4-4 is welded to the mobile trolley body 4-1. Angle steel 4-5 is welded to the mobile trolley body 4-1 and the caster connecting block 4-4 to increase overall coordination and stability.

[0049] The fixed track 2 is welded to the pre-embedded plate of the pit. Before welding, standard plates of different heights are inserted according to the ground settlement. After the bottom is welded, a rectangular pressure plate is welded to further increase the strength. Finally, the track is completely fixed by secondary pouring. The connecting rod 3 is composed of high-strength hollow round tubes, which can completely overcome the stress deformation caused by external forces according to calculations. At the same time, the lightweight treatment makes the connecting rod more durable. The connecting rod 3 is connected to the telescopic moving trolley 1 through metal bearing seats 4. The metal bearing seats 4 are fixed to the telescopic moving trolley 1 by bolts, which reduces friction for the free rotation of the connecting rod 3 and protects the rotating parts. The special coupling 5 connects the connecting rods 3 in pairs, so that multiple telescopic moving trolleys 1 can run synchronously, ensuring the stability and consistency of the entire telescopic trolley.

[0050] like Figure 3As shown, the drive mechanism 6 includes a tensioning mechanism 6-1, a walking support assembly 6-2, a high-performance transport roller chain 6-3, a welded base 6-4, an adjusting bolt 6-5, a connecting shaft assembly 6-6, a power end assembly 6-7, and a sensor mounting bracket 6-8. The tensioning mechanism 6-1 is connected to the traveling support assembly 6-2 via fastening bolts; the high-performance transport roller chain 6-3 connects the tensioning mechanism 6-1 and the two sprockets in the power end assembly 6-7 to form a conveying circuit; the adjusting bolt 6-5 adjusts the height during installation, and after height adjustment, it is fixed to the ground embedded plate by welding with the mounting feet 6-4; the connecting shaft assembly 6-6 connects the high-performance transport roller chain 6-3 and the telescopic moving trolley 1, so that the chain can move synchronously with the telescopic moving trolley 1; the power end assembly 6-7 is fixed to the traveling support assembly 6-2 with bolts and welded to the embedded plate with welding blocks; the sensor mounting bracket 6-8 is fixed to the traveling support assembly 6-2 with bolts and is used to install sensors, which can analyze and detect the movement status of the chain in real time and set soft limits to ensure the operational safety of the equipment. The variable frequency motor in the power end assembly 6-7 has a brake function to prevent safety accidents caused by component jamming or uneven local stress. The single-motor drive design can save a lot of installation space and processing costs for the device, and can also ensure the synchronization of the telescopic trolley, achieving multiple benefits.

[0051] like Figure 4 The diagram shows the tensioning mechanism 6-1, which includes a tensioning connecting plate 7-1, a bearing seat 7-2, a connecting shaft 7-3, a cover plate 7-4, a driven sprocket 7-5, and a spacer 7-6. The tensioning connecting plate 7-1 is welded from a 20mm thick steel plate, with a reinforcing sealing plate welded to the near end, which not only improves the overall strength of the mechanism but also facilitates the machining accuracy of the components. The bearing seat 7-2 is fixed to the tensioning connecting plate 7-1 by bolts. The connecting shaft 7-3 passes through the bearing seat 7-2 and the spacer 7-6, and is connected to the driven sprocket 7-5 by a high-strength key to ensure the smooth operation of the tensioning mechanism. The cover plate 7-4 restricts the axial movement of the connecting shaft 7-3 by bolts. The left and right fixing components of the tensioning mechanism 6-1 are designed as mirror images, which not only improves the overall stress resistance but also facilitates assembly and machining.

[0052] like Figure 5The diagram shows the structure of the connecting shaft assembly 6-6, including a main base 8-1, a connecting pin 8-2, a copper sleeve 8-3, a large pressure plate 8-4, a clamp 8-5, a ball joint 8-6, a screw 8-7, and a clamping screw 8-8. The main base 8-1 is designed with two semicircles at the ends and two oblong grooves in the middle. This design not only ensures that the three links of the connecting shaft assembly 6-6 are subjected to force when connected to the high-performance transport roller chain 6-3, thus achieving uniform and clamping force, but also facilitates installation and handling. It is extremely convenient; the connecting pin 8-2 is fixed to the main body base 8-1 by its own thread, and the copper sleeve 8-3 is placed inside the chuck 8-5, so that the chuck can partially deflect under eccentric force to achieve the function of protecting the mechanism; the large pressure plate 8-4 is connected to the chuck 8-5 by bolts to position the connecting pin 8-2 and the copper sleeve 8-3; the ball head 8-6 is connected to the screw 8-7 by threads to limit the connecting rod 3; the clamping screw rod 8-8 passes through the screw 8-7 through the through hole and is limited by the nut. When the connecting shaft assembly 6-6 is connected to the connecting rod 3, the connecting rod 3 is first inserted into the hole of the chuck 8-5, and then the height of the screw 8-7 is adjusted, and the ball head 8-6 is used to limit it. At the same time, the arc contact of the two spherical surfaces can reduce the local concentrated stress during pushing and pulling, and improve the service life of the mechanism.

[0053] like Figure 6 The diagram shows the mechanical anti-collision limit block 7 mechanism; the mechanical anti-collision limit block 7 is composed of 10×200×200 hollow rectangular square steel, with panels at the bottom and top, and reinforcing plates welded to the sides, making it very strong and able to cope with any derailment of the telescopic trolley, ensuring the safety of personnel and equipment.

[0054] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A telescopic trolley structure, characterized in that: The telescopic trolley structure includes several parallel fixed tracks, each fixed track is equipped with a movable telescopic trolley, each telescopic trolley has a connecting rod at one end, adjacent connecting rods are connected by a special coupling, the connecting rods are connected to the telescopic trolley by a metal bearing seat, and the end of the telescopic trolley is connected to a drive mechanism; each fixed track has a mechanical anti-collision limit block at both ends.

2. The telescopic trolley structure according to claim 1, characterized in that: The telescopic mobile trolley includes a mobile trolley body, with several sets of drive casters at the bottom of the mobile trolley body. The drive casters are connected to the mobile trolley body via caster connecting blocks. Several sets of evenly distributed directional rollers are provided at the top of the mobile trolley body. The caster connecting blocks are connected to the mobile trolley body via welded angle steel.

3. The telescopic trolley structure according to claim 1, characterized in that: The drive mechanism includes a traveling support assembly and a high-performance transport roller chain located above the traveling support assembly. One end of the traveling support assembly and the high-performance transport roller chain is connected to a tensioning mechanism, and the other end of the traveling support assembly and the high-performance transport roller chain is connected to a power end assembly.

4. The telescopic trolley structure according to claim 3, characterized in that: The drive mechanism is connected to the ground-mounted feet via several adjusting bolts. The walking support assembly is equipped with a sensor mounting bracket, which is equipped with a sensor. The high-performance transport roller chain is connected to the telescopic mobile trolley via the connecting shaft assembly.

5. The telescopic trolley structure according to claim 3, characterized in that: The tensioning mechanism includes a tensioning connecting plate, a connecting shaft passing through the tensioning connecting plate, bearing seats and cover plates for restricting the axial movement of the connecting shaft at both ends, a spacer sleeve on the connecting shaft, and a driven sprocket in the middle of the connecting shaft.

6. The telescopic trolley structure according to claim 4, characterized in that: The connecting shaft assembly includes a main base and a chuck. The main base and the chuck are connected by a connecting pin. The chuck has a copper sleeve that mates with the connecting pin. One end of the connecting pin has a large pressure plate. The chuck has a liftable ball head. One end of the ball head has a screw. The screw has a matching clamping screw. One end of the connecting rod is located inside the chuck. The connecting rod is limited by the lifting and lowering of the ball head.

7. The telescopic trolley structure according to claim 1, characterized in that: The mechanical anti-collision limit block is composed of hollow rectangular steel bars. The two ends of the hollow rectangular steel bars are provided with top panels and bottom panels, and the sides are provided with reinforcing plates.

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