Sandstone hopper lifting appliance

Abstract

The utility model provides a gravel hopper lifting appliance. The gravel hopper lifting appliance comprises a lifting bearing cross beam, a hydraulic system, a fixed pulley, a steel wire rope rigging and a chain rigging, the hydraulic system comprises a hydraulic station and a plurality of hydraulic execution elements, wherein the hydraulic station is arranged on the lifting bearing cross beam. Two groups of fixed pulleys are arranged at the two ends of the lifting bearing cross beam, one end of the steel wire rope rigging is connected to the hydraulic execution element, the other end of the steel wire rope rigging penetrates through the fixed pulleys and then is deflected downwards to be used for lifting a hopper body of the gravel hopper, and the hydraulic execution element is used for pulling the steel wire rope rigging; the chain riggings are arranged at the two ends of the bearing and hoisting cross beam in groups, the top ends of the chain riggings are connected to the end part of the bearing and hoisting cross beam, and the bottom ends of the chain riggings are connected to the free end of a hopper cover of the gravel hopper; the hydraulic execution element drags the bucket body to move upwards through the steel wire rope rigging to be matched with the opening and closing overturning stroke of the free end of the bucket cover, so that opening and closing of the bucket cover in the gravel hopper are completed. The lifting appliance has the advantages of optimized structure, convenience in assembly and disassembly and convenience in unloading operation.

Description

Technical Field

[0001] The utility model relates to the technical field of crane lifting tools, and specifically, to a lifting tool for a sand and gravel hopper. Background Technique

[0002] During the tunnel construction process, a large amount of bulk sand and gravel needs to be transported. In order to transport the bulk sand and gravel, a variety of transportation methods have been developed, which generally include:

[0003] 1. Using a dump truck for direct transportation. However, in the case of limited tunnel space, it will be restricted to a certain extent, and the transportation efficiency is relatively low, but the flexibility is the best; 2. Using a loader for transportation, which is only suitable for short-distance and small-batch transportation and has strong professionalism. 3. Using a rail car for transportation. This method has a long transportation distance and a large transportation volume and is suitable for large-scale operations.

[0004] No matter which of the above solutions, it can solve the transportation problem of bulk sand and gravel in different applicable scenarios. However, in the above working links, there are still some links that urgently need to be optimized and reformed.

[0005] Currently, the process of transferring bulk materials to the above-mentioned transportation equipment mainly relies on methods such as excavators or manual labor. However, the tunnel is different from an open space, and the transport vehicle often cannot reach the front line position. Therefore, a transfer is still required, and the sand and gravel hopper came into being. The sand and gravel hopper can be transferred by suspension, which can overcome the problem that the front line cannot be reached. However, the lifting tools of the currently common sand and gravel hoppers are designed to go to two extremes. Either they are very primitive and rely on manual operation for unloading, resulting in a high operation risk during the loading and unloading process; or they are equipped with a dedicated unloading drive mechanism to directly control the opening and closing of the hopper door. The structure is usually relatively complex and is also prone to interference or collision with the sand and gravel itself, causing damage. To solve the above problems, there is an urgent need to provide a new lifting tool with an optimized structure for easy assembly and disassembly and convenient unloading operation. Summary of the Utility Model

[0006] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a lifting tool for a sand and gravel hopper with an optimized structure for easy assembly and disassembly and convenient unloading operation.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a lifting tool for a sand and gravel hopper, comprising a suspension crossbeam, a hydraulic system, a fixed pulley, a wire rope sling, and a chain sling;

[0008] The hydraulic system includes a hydraulic station and a plurality of hydraulic actuators arranged on the suspension crossbeam;

[0009] Two sets of fixed pulleys are arranged at both ends of the lifting crossbeam. One end of the wire rope sling is connected to the hydraulic actuator, and the other end passes through the fixed pulley and deflects downward for lifting the bucket body of the sand and stone hopper. The hydraulic actuator is used to tow the wire rope sling.

[0010] The chain slings are arranged in groups at both ends of the lifting crossbeam. The top end of the chain sling is connected to the end of the lifting crossbeam, and the bottom end is connected to the free end of the hopper cover of the sand and stone hopper.

[0011] The distance that the hydraulic actuator towes the bucket body upward through the wire rope sling is adapted to the opening and closing and flipping stroke of the free end of the hopper cover to complete the opening and closing of the hopper cover in the sand and stone hopper.

[0012] Preferably, the hydraulic station is arranged at one end of the lifting crossbeam, and a corresponding counterweight is configured at the other end of the lifting crossbeam so that the two ends of the crossbeam have equal counterweights centered on the hanging shaft.

[0013] Preferably, an electric control system is configured at the other end of the lifting crossbeam. The electric control system includes a storage battery and a control unit. The storage battery is used to supply power to the hydraulic station, and the control unit is used for the power management of the hydraulic station.

[0014] Preferably, the hydraulic actuator is a winch powered by a hydraulic motor.

[0015] Preferably, the hydraulic actuator is a hydraulic cylinder. Four groups of hydraulic cylinder mounting positions are respectively arranged on the front and back sides of the middle position of the lifting crossbeam. The tail ends of the four hydraulic cylinders are respectively hinged and installed at each hydraulic cylinder mounting position. The four hydraulic cylinders are pairwise in pairs and extend outward to the ends of the lifting crossbeam. A stop block for supporting the hydraulic cylinder to keep it horizontal is arranged on the lifting crossbeam.

[0016] Preferably, a hanging shaft is arranged at the middle position of the lifting crossbeam.

[0017] Preferably, fixed pulley mounting positions are arranged corresponding to the fixed pulleys at both ends of the lifting crossbeam.

[0018] Preferably, chain lugs are arranged corresponding to the chain slings at both ends of the lifting crossbeam.

[0019] Preferably, the lifting crossbeam is a rectangular crossbeam.

[0020] Preferably, the sand and stone hopper is a cuboid hopper, and the hopper cover is hinged to the bottom end of the hopper body.

[0021] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model has been improved mainly in two aspects:

[0022] First, integrate the hydraulic system and the electric control system onto the lifting crossbeam, enabling the lifting crossbeam to exist in the form of a component, achieving the integration of the power mechanism and the actuating components. When retrofitting the existing lifting tool, the retrofitting difficulty is extremely low, the replacement difficulty is extremely low, the loading and unloading are simple, and the compatibility with the existing lifting tools is relatively high.

[0023] Second, optimize the discharging method, eliminating the power mechanism for directly driving the hopper cover in the existing technology. Instead, utilize the power for lifting the hopper to indirectly open the hopper cover. There are no active power components in the area where the hopper cover is opened. On the one hand, it is not easily damaged, and on the other hand, it is not easily jammed. Brief Description of the Drawings

[0024] Figure 1 is the overall schematic diagram of a sand and gravel hopper lifting tool in the present utility model.

[0025] Figure 2 is the structural schematic diagram of the lifting crossbeam in a sand and gravel hopper lifting tool of the present utility model.

[0026] Figure 3 is the structural schematic diagram of the hopper in the present utility model.

[0027] In the figure: 1. Lifting crossbeam; 2. Hydraulic system; 3. Electric control system; 4. Fixed pulley; 5. Steel wire rope sling; 6. Chain sling; 7. Hopper; 1.1. Hanging shaft; 1.2. Hydraulic cylinder installation position; 1.3. Block; 1.4. Fixed pulley installation position; 1.5. Chain hanger; 2.1. Hydraulic cylinder; 2.2. Hydraulic station; 7.1. Hopper body; 7.2. Hopper body hanger; 7.3. Hinged end; 7.4. Hopper cover; 7.5. Free end. Detailed Embodiment

[0028] Next, through specific embodiments, the technical solutions of the present utility model will be further described in detail.

[0029] As Figures 1 - 3 shown, a sand and gravel hopper lifting tool includes a lifting crossbeam 1, a hydraulic system 2, an electric control system 3, a fixed pulley 4, a steel wire rope sling 5, and a chain sling 6.

[0030] The hydraulic system 2 includes a hydraulic station 2.2 provided on the lifting crossbeam 1 and several hydraulic actuating components. In this embodiment, the hydraulic actuating component is selected as the hydraulic cylinder 2.1.

[0031] Specifically, in terms of the installation form, a suspension shaft 1.1 is provided at the center position of the suspension crossbeam 1 for connecting the hook of the crane. Four sets of hydraulic cylinder mounting positions 1.2 are respectively provided on the front and rear sides of the center position of the suspension crossbeam 1. The tails of the four hydraulic cylinders 2.1 are respectively hinged and installed at each hydraulic cylinder mounting position 1.2. The four hydraulic cylinders 2.1 extend pairwise towards the outer ends of the suspension crossbeam 1. A stop block 1.3 for supporting the hydraulic cylinder 2.1 to keep it horizontal is provided on the suspension crossbeam 1.

[0032] Pulley mounting positions 1.4 are provided at both ends of the suspension crossbeam 1 for installing two sets of pulleys 4. One end of the wire rope sling 5 is connected to the hydraulic cylinder 2.1, and the other end passes through the pulley 4 and deflects downward for hoisting the bucket body 7.1 of the sand and stone hopper 7. A bucket body lifting lug 7.2 is provided at the corresponding position of the bucket body 7.1. The hydraulic cylinder 2.1 is used to tow the wire rope sling 5.

[0033] The chain slings 6 are arranged in groups at both ends of the suspension crossbeam 1. Chain lifting lugs 1.5 are correspondingly provided at both ends of the suspension crossbeam 1. The top end of the chain sling 6 is connected to the chain lifting lug 1.5 at the end of the suspension crossbeam, and the bottom end is connected to the free end of the hopper cover 7.4 of the sand and stone hopper 7. As Figure 3 shown, the original hinged end 7.3 of the hopper cover 7.4 is hinged to the bucket body 7.1, and a pin shaft is provided at the free end 7.5 of the hopper cover 7.4 for connecting to the chain sling 6.

[0034] The distance that the hydraulic cylinder 2.1 towes the bucket body 7.1 upward through the wire rope sling 5 is adapted to the opening and closing flipping stroke of the free end 7.5 of the hopper cover 7.4 to complete the opening and closing of the hopper cover 7.4 in the sand and stone hopper.

[0035] To meet the counterweight requirement, the hydraulic station 2.2 is arranged at one end of the suspension crossbeam 1, and a corresponding counterweight is configured at the other end of the suspension crossbeam 1. In this embodiment, it is the electric control component 3, including a storage battery and a control unit. The storage battery is used to supply power to the hydraulic station, and the control unit is used for the power management of the hydraulic station to make the counterweights at both ends of the crossbeam equal with the suspension shaft as the center.

[0036] In other embodiments, the hydraulic actuator is a winch powered by a hydraulic motor.

[0037] In terms of shape design, the suspension crossbeam 1 is a rectangular crossbeam, the sand and stone hopper 7 is a cuboid hopper, and the hopper cover 7.4 is hinged to the bottom end of the bucket body 7.1.

[0038] Working principle description:

[0039] This sling needs to be used in conjunction with a crane. The hook of the crane hoists the lifting shaft 1.1 on the lifting crossbeam 1, and the hopper is transferred as a whole to the front line of the work. The sand and gravel bulk materials are transferred into the hopper by special engineering equipment.

[0040] At this time, the hopper is in a suspended state, and the release length of the wire rope sling 5 is appropriate to ensure that the hopper cover 7.4 is closed. When the feeding is completed and it needs to be transferred outwards, the crane controls the rotation of the boom to lift the hopper as a whole and transfer it above the transfer equipment to prepare for discharging.

[0041] When the discharging action is started, the hydraulic cylinder 2.1 contracts, and the hopper body 7.1 is pulled upwards as a whole through the wire rope sling 5. Since there is no corresponding change in the chain sling 6, the free end 7.5 of the hopper cover 7.4 moves relatively downwards, and the hopper cover 7.4 rotates and opens around the hinged end 7.3, and the sand and gravel bulk materials fall into the transfer equipment below.

[0042] After the discharging is completed, the hydraulic cylinder 2.2 extends, the wire rope sling 5 retracts, the hopper body 7.1 moves downwards, the hopper cover 7.4 closes, and it is transferred to the front line of the work again to carry out the feeding of sand and gravel materials, and so on.

[0043] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hoisting device for sand and gravel hoppers, characterized in that: It includes a lifting crossbeam, a hydraulic system, fixed pulleys, wire rope rigging and chain rigging; The hydraulic system includes a hydraulic station and a number of hydraulic actuators arranged on the lifting crossbeam; Two groups of fixed pulleys are arranged at both ends of the lifting crossbeam. One end of the wire rope rigging is connected to the hydraulic actuator, and the other end passes through the fixed pulley and deflects downward for hoisting the bucket body of the sand and stone hopper. The hydraulic actuator is used to tow the wire rope rigging; The chain riggings are arranged in groups at both ends of the lifting crossbeam. The top end of the chain rigging is connected to the end of the lifting crossbeam, and the bottom end is connected to the free end of the hopper cover of the sand and stone hopper; The distance that the hydraulic actuator towes the bucket body upward through the wire rope rigging is adapted to the opening and closing and flipping stroke of the free end of the hopper cover to complete the opening and closing of the hopper cover in the sand and stone hopper.

2. The hoisting device for sand and gravel hoppers according to claim 1, characterized in that: The hydraulic station is arranged at one end of the lifting crossbeam, and a corresponding counterweight is configured at the other end of the lifting crossbeam so that the two ends of the crossbeam have equal counterweights centered on the lifting shaft.

3. The hoist for sand and gravel hopper according to claim 2, characterized in that: An electric control system is configured at the other end of the lifting crossbeam. The electric control system includes a storage battery and a control unit. The storage battery is used to supply power to the hydraulic station, and the control unit is used for the power management of the hydraulic station.

4. The hoisting device for sand and gravel hopper according to claim 1, wherein: The hydraulic actuator is a winch powered by a hydraulic motor.

5. The hoisting device for sand and gravel hoppers according to claim 1, characterized in that: The hydraulic actuator is a hydraulic cylinder. Four groups of hydraulic cylinder mounting positions are respectively arranged on the front and rear sides of the middle position of the lifting crossbeam. The tail ends of the four hydraulic cylinders are respectively hinged and installed at each hydraulic cylinder mounting position. The four hydraulic cylinders are pairwise in pairs and extend towards the outer ends of the lifting crossbeam. A block for supporting the hydraulic cylinder to keep it horizontal is arranged on the lifting crossbeam.

6. The hoist for sand and gravel hopper according to claim 1, characterized in that: A lifting shaft is arranged at the middle position of the lifting crossbeam.

7. The hoisting device for sand and gravel hoppers according to claim 1, characterized in that: Fixed pulley mounting positions are arranged corresponding to the fixed pulleys at both ends of the lifting crossbeam.

8. The hoisting device for sand and gravel hopper according to claim 1, wherein: Chain lugs are arranged corresponding to the chain riggings at both ends of the lifting crossbeam.

9. The hoisting device for sand and gravel hopper according to claim 1, characterized in that: The lifting crossbeam is a rectangular crossbeam.

10. The hoisting device for sand and gravel hoppers according to claim 1, characterized in that: The sand and stone hopper is a cuboid hopper, and the hopper cover is hinged to the bottom end of the bucket body.

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