Port self-discharging equipment maintenance device

Abstract

The invention discloses a maintenance device for port self-discharging equipment. The maintenance device comprises at least four supporting bases, a bearing base and moving wheel sets. The adjacent supporting bases are connected through adjustable connecting rods, and unloading jacking devices are arranged on the bearing bases. The moving wheel sets are provided with self-locking brakes so that moving and in-position locking can be facilitated. A fixed positioning plate is arranged at the lower end of the supporting base, a supporting piece is arranged on the side face of the positioning plate, and a telescopic piece is arranged in the supporting base and drives the supporting piece to unfold or fold through a connecting piece. The supporting piece is composed of a bearing plate, a stretching plate and a supporting leg, and a torsional spring is arranged between the supporting leg and the stretching plate and can rotate within a preset angle range. The connecting piece is matched with the limiting and clamping structure to achieve in-place unfolding and locking. The device is high in adaptability, high in stability and suitable for jacking maintenance of port self-discharging equipment.

Description

Technical Field

[0001] This invention relates to the field of port self-unloading equipment maintenance technology, and in particular to a port self-unloading equipment maintenance device. Background Technology

[0002] After long-term high-load operation, port dumping equipment (such as port dump trucks) often requires maintenance of the chassis, wheel sets, suspension, and related structural components. To obtain working space and ensure the safety of personnel and equipment, maintenance usually requires the use of lifting / jacking equipment to lift and unload the dumping equipment, and to maintain stable support and reliable limit switches during the lifting process.

[0003] For example, the utility model with publication number CN219620785U discloses a "port dump truck maintenance auxiliary lifting device", which achieves lifting by raising and lowering the support platform, and sets up a ramp to facilitate the vehicle to drive into the top of the support platform. A limiting groove is set on the top of the support platform to limit the tires to reduce slippage. At the same time, telescopic rods and intercepting rods are set to support the area below the support platform after it is raised.

[0004] This type of solution requires vehicles to drive up a ramp to the top of the support platform before being stopped and lifted. Therefore, it depends on the site space, ramp layout conditions, and the accessible path for the equipment. When space is limited at the port maintenance site or the equipment cannot be driven in along the designated route, the placement and use of the device will be affected.

[0005] In addition, this type of solution uses a support platform as the main load-bearing lifting structure, and the support point arrangement is biased towards platform-type load-bearing. When facing different models of port self-unloading equipment, different stress point distributions, or maintenance conditions that require multi-point coordinated stable support, the rapid adjustment of the support point position and multi-point matching are limited.

[0006] Therefore, there is a need for a port self-unloading equipment maintenance device that can be quickly positioned without relying on vehicles to drive onto the platform, and can achieve flexible arrangement of multiple support points and stable support / limiting, so as to meet the requirements of port on-site maintenance operations for adaptability and safety. Summary of the Invention

[0007] The purpose of this invention is to solve the technical problems existing in the prior art, such as the positioning being limited by the site and path, and the lack of stable support and reliable limiting during the lifting process, and to propose a maintenance device for port self-unloading equipment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A maintenance device for port self-unloading equipment includes at least four support bases, a bearing base respectively disposed on the upper end of each support base, and a set of movable wheels. Adjacent support bases are connected by adjustable connecting rods. The bearing base is disposed on the upper end of the corresponding support base, and an unloading lifting device is installed on the upper end of the bearing base. The movable wheels are installed below the corresponding support base. A fixed positioning plate is installed on the lower end of the support base, and at least one support member is installed on the side of the fixed positioning plate. A telescopic member is disposed in each support base, and the telescopic member is connected to the support member through a connector. The connector includes a first pull rod and a second pull rod. The lower end of the first pull rod is provided with a limiting bracket, and the limiting bracket and the second pull rod have a matching snap-fit ​​structure, forming a fitting limit when the angle between the first pull rod and the second pull rod is 180°.

[0009] Preferably, the support includes a bearing plate, a tension plate rotatably mounted on the end of the bearing plate, and a support foot rotatably mounted on the end of the tension plate; the bearing plate is fixedly mounted on the lower side of the fixed positioning plate at the lower end of the support base, and each fixed positioning plate has three bearing plates on its side, and the three bearing plates respectively constitute three support members; a torsion spring is provided at the connection between the support foot and the tension plate.

[0010] Preferably, the relative rotation angle between the support foot and the tension plate is 30° to 90°.

[0011] Preferably, the connector includes a lifting ring slidably connected to the support base, a first pull rod rotatably connected to the lifting ring, and a second pull rod rotatably connected to the first pull rod; the second pull rod is rotatably connected to the upper end of the tension plate.

[0012] Preferably, a limiting bracket is fixedly installed at the lower end of the first pull rod, a limiting rod is rotatably connected to the lower end of the limiting bracket, a pulley is rotatably connected to the lower end of the limiting rod, and a sliding groove is provided at the upper end of the support base; the pulley is located in the sliding groove and can roll along the sliding groove.

[0013] Preferably, the cross-section of the limiting bracket is triangular. When the angle between the first tie rod and the second tie rod is less than 180°, the top side of the limiting bracket is separated from the second tie rod; when the angle between the first tie rod and the second tie rod is 180°, the top side of the limiting bracket is attached to the lower end of the second tie rod.

[0014] Preferably, the upper end of the limiting bracket is fixedly connected to a fitting protrusion, and the lower end of the second pull rod is provided with a fitting groove; the fitting groove engages with the fitting protrusion.

[0015] Preferably, the telescopic component includes a pneumatic telescopic cylinder installed in the support base, the output end of the pneumatic telescopic cylinder is connected to three telescopic rods, and a connecting slider is installed at the lower end of the telescopic rods; the side of the support base is provided with a guide groove for accommodating the connecting slider, the telescopic rod passes through the guide groove, and the connecting slider is fixedly connected to the inner side of the lifting ring.

[0016] Preferably, the movable wheel assembly is equipped with a self-locking brake.

[0017] The present invention has the following beneficial effects: 1. The port self-unloading equipment maintenance device proposed in this invention uses a multi-point arrangement of at least four support bases and adjustable connecting rods between adjacent support bases to adjust the spacing, so that the device can be quickly adapted and positioned according to the external dimensions and stress point positions of different port self-unloading equipment, thereby improving the flexibility of on-site positioning.

[0018] 2. The port self-unloading equipment maintenance device proposed in this invention drives the lifting ring and the first and second tie rods through the telescopic component to drive the tension plate and support foot to unfold and form an external support. It also uses the limiting bracket to fit and limit when the included angle reaches 180° and the locking of the fitting protrusion and the fitting groove to achieve reliable holding of the support after it is in place, thereby improving the stability and safety of the lifting and unloading process. Furthermore, the rolling guide of the pulley in the slide groove reduces the sway and jamming of the linkage mechanism.

[0019] 3. The port self-unloading equipment maintenance device proposed in this invention has a movable wheel set that facilitates the movement of the device. With the help of a self-locking brake, the wheel set can be locked during jacking operations, reducing the risk of device slippage and improving the operability of maintenance operations. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the device proposed in this invention; Figure 2 This is a partial three-dimensional structural diagram of the device proposed in this invention; Figure 3 This is a schematic diagram showing the movement of the support member, telescopic member, and connecting member of the present invention; Figure 4 This is a partially enlarged view of the telescopic component in this invention; Figure 5 For the present invention Figure 3 Enlarged view of part A; Figure 6 This is a schematic diagram of the internal structure of the support base in this invention.

[0021] In the diagram: 1. Support base; 2. Bearing base; 3. Moving wheel set; 4. Unloading lifting device; 5. Fixed positioning plate; 6. Support component; 7. Telescopic component; 8. Connecting component; 61. Bearing plate; 62. Tension plate; 63. Support foot; 71. Lifting ring; 72. First tie rod; 73. Second tie rod; 74. Limiting bracket; 75. Limiting rod; 76. Pulley; 77. Slide groove; 78. Fitting protrusion; 79. Fitting groove; 81. Pneumatic telescopic cylinder; 82. Telescopic rod; 83. Connecting slider; 84. Guide groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Reference Figure 1 and Figure 6 This embodiment provides a maintenance device for port self-unloading equipment, including at least four support bases 1, a load-bearing base 2, and a set of movable wheels 3. The multiple support bases 1 are arranged circumferentially or rectangularly, and adjacent support bases 1 are connected by adjustable linkages to allow for expansion or contraction according to the bottom dimensions of the port self-unloading equipment to be maintained or the required maintenance space. The load-bearing base 2 is located at the upper end of each support base 1 and is used to support and position the port self-unloading equipment to be maintained. An unloading lifting device 4 is installed at the upper end of the load-bearing base 2 for lifting and unloading the equipment, thereby providing working space for inspection and maintenance.

[0025] Reference Figure 1 Each support base 1 has a corresponding set of moving wheels 3 installed underneath for overall movement and positioning of the device. A fixed positioning plate 5 is installed at the lower end of the support base 1, and at least one support member 6 is installed on the side of the fixed positioning plate 5 to form external support during jacking operations, improving the stability of the device and reducing the risk of tipping over. Each support base 1 is equipped with a telescopic member 7, which is connected to the support member 6 through a connector 8 to realize the expansion, retraction and locking control of the support member 6.

[0026] The support base 1 serves as the basic load-bearing unit of the device, preferably a box-type or frame-type structure. The material can be Q235 steel, Q355 steel, or other structural steel to ensure overall strength and torsional resistance. The support base 1 has an internal space for installing the telescopic component 7. The upper end of the support base 1 is connected to the load-bearing base 2, and the lower end is connected to the fixed positioning plate 5. It also cooperates with the moving wheel set 3 at the bottom to achieve movement.

[0027] Adjacent support bases 1 are connected by adjustable connecting rods. The adjustable connecting rods can be telescopic, threaded, or multi-hole pin adjustment structures, preferably using threaded adjustment or pin positioning methods, to achieve adjustable spacing between support bases 1, thus adapting to the maintenance needs of different models of port self-unloading equipment. Both ends of the connecting rods can be connected to the support bases 1 via pin hinges or bolts.

[0028] The support base 2 is mounted on the upper end of the support base 1 and is used to support the equipment to be maintained. The unloading and lifting device 4 is installed on the upper end of the support base 2, which can provide lifting force during equipment maintenance to realize the unloading, support or lifting and positioning of the equipment.

[0029] The unloading lifting device 4 is installed on the upper end of the bearing base 2 and can be a hydraulic lifting mechanism, a mechanical screw lifting mechanism, or other structural forms capable of providing lifting force. Its function is to lift the port self-unloading equipment to be maintained to a predetermined height, so that it is in a stable maintenance posture.

[0030] Preferably, the unloading lifting device 4 can be in the form of a hydraulic jack or a hydraulic cylinder, and is installed on each bearing base 2 respectively; multiple unloading lifting devices 4 can achieve synchronous lifting through a diversion and collection valve, a synchronization valve or an equivalent synchronization control circuit, or control the lifting height of each point to be consistent by setting mechanical limits and step correction methods, so as to reduce the risk of tilting during the lifting process.

[0031] The mobile wheel set 3 is installed below the corresponding support base 1 and may include swivel wheels or directional wheels. The wheel material can be polyurethane coated wheels, nylon wheels, or rubber wheels to adapt to the port site. The mobile wheel set 3 is equipped with a self-locking brake to lock the wheel set after the device is in place and prevent slippage during the lifting operation.

[0032] The fixed positioning plate 5 is installed at the lower end of the support base 1. The fixed positioning plate 5 serves as the mounting base for the support member 6 and also enhances the strength and stability of the lower structure of the support base 1. When the support leg 63 is deployed, the support leg 63 contacts the ground to provide external support.

[0033] Reference Figures 3 to 6Support member 6 is installed on the side of fixed positioning plate 5 to form external support. It includes: bearing plate 61, tension plate 62, support foot 63, and torsion spring. The bearing plate 61 is fixedly installed on the lower side of the fixed positioning plate 5 at the lower end of the support base 1. Each fixed positioning plate 5 has three bearing plates 61 on its side, and the three bearing plates 61 respectively constitute three support members 6, that is, each bearing plate 61 corresponds to a set of tension plate 62 and support foot 63 structure. The bearing plate 61 is used to provide the fulcrum and bearing surface for the rotatable installation of tension plate 62. Tension plate 62 is rotatably installed at the end of bearing plate 61. Tension plate 62 is used to swing and unfold or retract under the drive of connector 8, and transmits force to support foot 63 to realize external support. Support foot 63 is rotatably installed at the end of tension plate 62. The support foot 63 is provided with wear-resistant and anti-slip pads (rubber pads or wear-resistant materials can be selected) at the end to improve friction with the ground and reduce damage to the ground. The relative rotation angle between the support foot 63 and the tension plate 62 is 30° to 90° to adapt to different deployment postures and improve support stability. A torsion spring is installed at the connection between the support foot 63 and the tension plate 62. The torsion spring is used to provide a restoring force or preload during deployment or retraction, so that the support foot 63 can keep in contact with the ground and maintain a stable posture when under force.

[0034] Reference Figures 3 to 6 Each support base 1 is equipped with a telescopic component 7, which is used to drive the support component 6 to unfold / retract and lock. It includes: a pneumatic telescopic cylinder 81, a telescopic rod 82, a connecting slider 83, and a guide groove 84.

[0035] The pneumatic telescopic cylinder 81 is installed inside the support base 1. It is preferably a pneumatic cylinder body, which can be fixed to the inner wall of the support base 1 by bolts or brackets.

[0036] The output end of the pneumatic telescopic cylinder 81 is connected to three telescopic rods 82, which can be a three-bar output structure arranged in parallel to improve the stability of the drive and the ability to resist off-center loads.

[0037] Preferably, the output end of the pneumatic telescopic cylinder 81 is provided with a connecting plate, and the three telescopic rods 82 are respectively fixedly connected or hinged to the connecting plate to realize the distribution of output force and ensure synchronous telescopic movement.

[0038] The connecting slider 83 is installed at the lower end of the telescopic rod 82 and is used to cooperate with the connecting piece 8 to transmit force.

[0039] The support base 1 has a guide groove 84 on its side for accommodating the connecting slider 83. The telescopic rod 82 passes through the guide groove 84. The guide groove 84 is used to limit the movement trajectory of the connecting slider 83, improve the smoothness of transmission and prevent jamming.

[0040] Reference Figures 3 to 6The connector 8 is used to convert the linear drive of the telescopic member 7 into the unfolding / locking action of the support member 6. It includes: lifting ring 71, first pull rod 72, second pull rod 73, limiting bracket 74, limiting rod 75, pulley 76, slide groove 77, fitting protrusion 78, and fitting groove 79.

[0041] Preferably, the lifting ring 71 and the support base 1 are slidably fitted together through a guide groove or a guide rail-slider structure, and a limiting structure is provided to prevent the lifting ring 71 from coming off.

[0042] The lifting ring 71 is slidably connected to the support base 1 and can move along the defined direction of the support base 1. The connecting slider 83 is fixedly connected to the inner side of the lifting ring 71, so that the lifting ring 71 moves synchronously when the telescopic member 7 extends or retracts.

[0043] The first pull rod 72 is rotatably connected to the lifting ring 71.

[0044] The second pull rod 73 is rotatably connected to the first pull rod 72 and rotatably connected to the upper end of the tension plate 62, thereby transmitting the movement of the lifting ring 71 to the tension plate 62.

[0045] The limiting bracket 74 is fixedly installed at the lower end of the first tie rod 72. It has a triangular cross-section and is used to form a limiting fit when the mechanism is deployed into place.

[0046] The limiting rod 75 is rotatably connected to the lower end of the limiting bracket 74.

[0047] The pulley 76 is rotatably connected to the lower end of the limiting rod 75.

[0048] The slide groove 77 is located on the upper end of the support base 1, and the pulley 76 is located in the slide groove 77 and can roll along the slide groove 77. It is used to guide and limit the movement of the bracket 74 and the tie rod mechanism, and enhance the controllability of the action.

[0049] Fitting protrusion 78 and fitting groove 79: The fitting protrusion 78 is fixedly connected to the upper end of the limiting bracket 74, and the fitting groove 79 is opened at the lower end of the second pull rod 73. When the mechanism is unfolded into position, the fitting protrusion 78 and the fitting groove 79 engage to achieve positioning and locking.

[0050] Working principle: In use, release the self-locking brake of the movable wheel set 3 and push the device to the maintenance position of the port self-unloading equipment. Adjust the distance between adjacent support bases 1 using the adjustable linkage to align the bearing base 2 and the unloading lifting device 4 with the equipment's stress point or support point. After positioning, lock the self-locking brake of the movable wheel set 3 to prevent displacement during operation.

[0051] In the initial state, the telescopic component 7 is in the retracted or neutral position, the lifting ring 71 is in the initial position, the first tie rod 72 and the second tie rod 73 are not fully extended, the tension plate 62 and the support foot 63 are relatively close, and the support component 6 has not yet fully extended outward, which facilitates movement and approach to the equipment.

[0052] When lifting and unloading operations are required, the pneumatic telescopic cylinder 81 is activated, causing its output end to push the three telescopic rods 82 to extend synchronously, which in turn drives the connecting slider 83 to move smoothly along the guide groove 84. Since the connecting slider 83 is fixedly connected to the inner side of the lifting ring 71, the movement of the connecting slider 83 will drive the lifting ring 71 to slide on the support base 1.

[0053] After the lifting ring 71 is displaced, it drives the first tie rod 72 to rotate and further drives the second tie rod 73 to swing. The second tie rod 73 is rotatably connected to the upper end of the tension plate 62, thereby driving the tension plate 62 to rotate around the end of the bearing plate 61, realizing the outward expansion of the support member 6. The tension plate 62 drives the support foot 63 to expand synchronously. Under the action of the torsion spring, the support foot 63 tends to touch the ground, so that it forms reliable support with the ground. The relative rotation angle between the support foot 63 and the tension plate 62 is controlled within the range of 30° to 90° to adapt to different ground heights and external support postures, thereby improving stability.

[0054] As the first tie rod 72 and the second tie rod 73 gradually approach their fully extended positions, the triangular cross-section structure of the limiting bracket 74 acts as a limiting element: when the angle between the two tie rods is less than 180°, the top side of the limiting bracket 74 is separated from the second tie rod 73; when the angle between the two tie rods reaches 180° (the mechanism is in a straight line), the top side of the limiting bracket 74 engages with the lower end of the second tie rod 73, forming a positioning limit. Simultaneously, the engaging protrusion 78 at the upper end of the limiting bracket 74 engages with the engaging groove 79 at the lower end of the second tie rod 73, locking the extended position and preventing accidental retraction of the support component 6 under lifting force or vibration, thus improving the safety and stability of the maintenance process.

[0055] During the above-mentioned actions, the limiting rod 75 drives the pulley 76 to roll and guide within the slide groove 77, making the movement trajectory of the limiting bracket 74 and the linkage mechanism more stable and reducing the risk of swaying and jamming.

[0056] After the support component 6 is externally supported and locked in place, the unloading and lifting device 4 is activated to lift and unload the port self-unloading equipment, providing sufficient maintenance space for the equipment. Due to the device's multi-support base 1 arrangement, external support component 6, and wheel brake locking, it effectively improves the anti-overturning capability and overall stability during lifting operations, solving the technical problems of unstable support, easy slippage, or increased risk due to lateral forces during lifting, inherent in traditional maintenance devices.

[0057] After maintenance, control the unloading lifting device 4 to return to its original supported state. Then, control the pneumatic telescopic cylinder 81 to retract, causing the lifting ring 71 to slide in the opposite direction. The first pull rod 72 and the second pull rod 73 fold accordingly, disengaging the fitting protrusion 78 from the fitting groove 79. The support member 6 gradually retracts and returns to its original position under the action of the torsion spring and the mechanism's return stroke. Finally, release the self-locking brake, and the device can be moved to the next work point or storage location.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A maintenance device for port self-unloading equipment, comprising at least four support bases (1), load-bearing bases (2) respectively disposed on the upper end of each support base (1), and a set of movable wheels (3), characterized in that: The adjacent support bases (1) are connected by an adjustable connecting rod. The bearing base (2) is located at the upper end of the corresponding support base (1). The upper end of the bearing base (2) is equipped with an unloading lifting device (4). The movable wheel set (3) is installed below the corresponding support base (1); A fixed positioning plate (5) is installed at the lower end of the support base (1). At least one support member (6) is installed on the side of the fixed positioning plate (5). A telescopic member (7) is provided in each support base (1). The telescopic member (7) is connected to the support member (6) through a connector (8). The connector (8) includes a first pull rod (72) and a second pull rod (73). A limiting bracket (74) is provided at the lower end of the first pull rod (72). The limiting bracket (74) and the second pull rod (73) are provided with a matching snap-fit ​​structure, and a fitting limit is formed when the angle between the first pull rod (72) and the second pull rod (73) is 180°.

2. The port self-unloading equipment maintenance device according to claim 1, characterized in that: The support member (6) includes a bearing plate (61), a tension plate (62) rotatably mounted on the end of the bearing plate (61), and a support foot (63) rotatably mounted on the end of the tension plate (62). The bearing plate (61) is fixedly installed on the lower side of the fixed positioning plate (5) at the lower end of the support base (1). Each fixed positioning plate (5) has three bearing plates (61) on its side, and the three bearing plates (61) respectively constitute three support members (6). A torsion spring is provided at the connection between the support foot (63) and the tension plate (62).

3. A port self-unloading equipment maintenance device according to claim 2, characterized in that: The relative rotation angle between the support foot (63) and the tension plate (62) is 30° to 90°.

4. A port self-unloading equipment maintenance device according to claim 1, characterized in that: The connector (8) includes a lifting ring (71) slidably connected to the support base (1), a first pull rod (72) rotatably connected to the lifting ring (71), and a second pull rod (73) rotatably connected to the first pull rod (72). The second pull rod (73) is rotatably connected to the upper end of the tension plate (62).

5. A port self-unloading equipment maintenance device according to claim 4, characterized in that: A limiting bracket (74) is fixedly installed at the lower end of the first pull rod (72), a limiting rod (75) is rotatably connected at the lower end of the limiting bracket (74), a pulley (76) is rotatably connected at the lower end of the limiting rod (75), and a sliding groove (77) is provided at the upper end of the support base (1). The pulley (76) is located in the groove (77) and can roll along the groove (77).

6. A port self-unloading equipment maintenance device according to claim 5, characterized in that: The cross-section of the limiting bracket (74) is triangular. When the angle between the first tie rod (72) and the second tie rod (73) is less than 180°, the top side of the limiting bracket (74) separates from the second tie rod (73). When the angle between the first pull rod (72) and the second pull rod (73) is 180°, the top side of the limiting bracket (74) is in contact with the lower end of the second pull rod (73).

7. A port self-unloading equipment maintenance device according to claim 6, characterized in that: The upper end of the limiting bracket (74) is fixedly connected to a fitting protrusion (78), and the lower end of the second pull rod (73) is provided with a fitting groove (79). The fitting groove (79) engages with the fitting protrusion (78).

8. A port self-unloading equipment maintenance device according to claim 7, characterized in that: The telescopic component (7) includes a pneumatic telescopic cylinder (81) installed in the support base (1). The output end of the pneumatic telescopic cylinder (81) is connected to three telescopic rods (82), and the lower end of the telescopic rods (82) is equipped with a connecting slider (83). The support base (1) has a guide groove (84) on its side for accommodating the connecting slider (83), the telescopic rod (82) passes through the guide groove (84), and the connecting slider (83) is fixedly connected to the inner side of the lifting ring (71).

9. A port self-unloading equipment maintenance device according to claim 8, characterized in that: The movable wheel assembly (3) is equipped with a self-locking brake.

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