A hoisting device

Abstract

The application relates to a hoisting device which comprises a chassis, a supporting assembly and a hoisting mechanism. The hoisting mechanism comprises a supporting piece, a hoisting arm and a hoisting tool. When hoisting operation is needed, the supporting assembly is operated to support the hoisting arm, that is, the supporting assembly is driven to rotate around the hinge point between the supporting assembly and the second end of the hoisting arm, so that the supporting end of the supporting assembly extends downward and is stably supported on the ground. At this time, the supporting end of the supporting assembly and the supporting piece fixed on the chassis jointly constitute bidirectional support for the hoisting arm, thereby avoiding the risk of device overturning during hoisting and moving heavy objects and ensuring operation safety. Meanwhile, the stable support enables the hoisting device to bear greater load, not only replaces traditional inefficient and dangerous manual lifting and carrying, but also improves the carrying efficiency of parts or equipment in equipment maintenance under the premise of guaranteeing carrying safety.

Description

Technical Field

[0001] This application relates to the field of coal mine production equipment technology, and in particular to a lifting device. Background Technology

[0002] In underground coal mining operations, the stable operation of electromechanical equipment is a core element for ensuring mine safety and maintaining production progress. Therefore, regular inspection and maintenance of relevant equipment is necessary. The underground coal mine environment is unique, requiring the transfer of mining equipment or components to designated maintenance locations during maintenance. However, in traditional maintenance methods, the handling of equipment and components relies heavily on manual lifting. This method is not only labor-intensive and prone to accidents such as injuries, but also inefficient, severely slowing down maintenance progress and adversely affecting normal coal mine production.

[0003] Therefore, how to improve handling efficiency and ensure handling safety are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0004] This application provides a lifting device to improve handling efficiency and ensure handling safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A lifting device includes a chassis, a support assembly, and a lifting mechanism, wherein the lifting mechanism includes a support member, a boom connected to the support member, and a lifting device connected to the boom; The bottom of the support member is connected to the chassis; The first end of the boom is connected to the top of the support member, and the connecting end of the support assembly is rotatably connected to the second end of the boom. When the support assembly is in a supported state, the support end of the support assembly extends in a direction away from the boom, and the support assembly is used to support the boom.

[0006] Optionally, in the above-mentioned lifting device, the boom is provided with a track extending along the length direction of the boom; The lifting device includes a traveling crane that can move along the track, a hook connected to the traveling crane, and a winch mechanism for driving the hook to move in a first direction.

[0007] Optionally, the above-mentioned lifting device further includes a first driving member and a connecting member, wherein the first end of the boom is rotatably connected to the top of the support member through the connecting member; One end of the first driving member is connected to the support member, and the other end of the first driving member is connected to the boom. The first driving member is used to drive the boom to rotate around the connecting member.

[0008] Optionally, in the above-mentioned lifting device, the support member includes a fixed part and a movable part, and the fixed part is sleeved with the movable part; The movable part is connected to the first end of the boom, and the movable part is connected to a second driving member, which is used to drive the movable part to move along the axial direction of the fixed part.

[0009] Optionally, in the above-mentioned lifting device, the support assembly includes a support rod, a rotating shaft, and a third driving member. The first end of the support rod is rotatably connected to the second end of the boom via the rotating shaft. One end of the third driving member is connected to the boom, and the other end of the third driving member is connected to the support rod. The third driving member is used to drive the support rod to rotate around the connecting shaft.

[0010] Optionally, in the above-mentioned lifting device, the support rod includes a rod body and a telescopic part. The telescopic part is located at the second end of the support rod and is telescopically connected to the end of the rod body away from the connecting shaft. The telescopic part is connected to a fourth driving member, which is used to drive the telescopic part to extend and retract relative to the rod body.

[0011] Optionally, in the above-mentioned lifting device, when the second end of the support rod is arranged close to the boom, the support assembly is in a retracted state; The boom is connected to a locking mechanism, the position of which corresponds to the position of the second end of the support rod when the support assembly is in the retracted state. The locking mechanism includes: At least one fixing lug is fixed to the boom, and the fixing lug has a first pin hole; A second pin hole is formed at the second end of the support rod and matches the first pin hole; A movable pin that can be axially moved and inserted through the first pin hole; An elastic reset member sleeved on or disposed at the end of the movable pin for driving the movable pin to move along the axial direction of the second pin hole; And an unlocking component, the fixed end of which is connected to the boom or the fixed lug, and the movable end of which is connected to the end of the movable pin away from the second pin hole; When the support component is in the retracted state, the movable pin is simultaneously inserted into the first pin hole and the second pin hole; When the support component is in the unfolded state, the movable end of the unlocking member pulls the movable pin out of the second pin hole.

[0012] Optionally, the above-mentioned lifting device also includes a monitoring component and a controller. The monitoring component includes a pressure sensor located at the bottom of the support member and / or the support end of the support component for real-time monitoring of the load at the support point, and an inclination sensor located on the chassis for monitoring the tilt state of the chassis. The controller is electrically connected to the pressure sensor and the tilt sensor, and is used to control the third drive component to adjust the angle between the support rod and the boom based on the data from the pressure sensor and the tilt sensor, and / or control the fourth drive component to adjust the length of the support rod.

[0013] Optionally, in the above-mentioned lifting device, the boom includes a main boom body and a transverse telescopic boom, the transverse telescopic boom being slidably disposed on the main boom body, and the support assembly being connected to the end of the transverse telescopic boom away from the main boom body; The boom is also connected to a fifth driving component, which is used to drive the lateral telescopic boom to extend and retract along the length of the main boom body.

[0014] Optionally, the lifting device described above also includes a counterweight structure, which includes a first counterweight disposed on the chassis and / or a second counterweight connected to the boom away from the support assembly.

[0015] The lifting device provided by this invention, when required for lifting operations, operates the support assembly to support the boom. Specifically, it drives the support assembly to rotate around the hinge point between the support assembly and the second end of the boom, causing the support end of the support assembly to extend downwards and firmly support the ground. At this time, the support end of the support assembly and the support member fixed to the chassis together form a bidirectional support for the boom, thus solving the technical problem of cantilever lifting devices in the prior art being prone to overturning due to unilateral force. When lifting equipment or heavy objects with a lifting device, the load is transferred through the boom and borne jointly by the support member and the support assembly, forming a stable lever arm support. This avoids the risk of the device overturning during lifting and moving heavy objects, ensuring operational safety. Simultaneously, the stable support allows the lifting device to withstand larger loads, not only replacing traditional inefficient and dangerous manual lifting but also improving the efficiency of handling parts or equipment during maintenance while ensuring handling safety. Attached Figure Description

[0016] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort. One or more embodiments are illustrated by way of example through the corresponding images in the accompanying drawings. These exemplary descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0017] Figure 1 This is a schematic diagram of the lifting device provided in the embodiments of this application; Figure 2 A top view of the lifting device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the support component provided in the embodiments of this application; Figure 4 A front view of the lifting device provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the lateral telescopic arm when it is extended, as provided in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: Chassis 1, counterweight structure 2, first counterweight 21, second counterweight 22, support 3, movable part 31, first drive 32, boom 4, lateral telescopic boom 41, fifth drive 42, overhead crane 51, hook 52, pivot 6, support rod 7, telescopic part 71, third drive 8, track 9, connector 10. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0021] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0022] See Figure 1 , Figure 2 and Figure 4 This application provides a lifting device, including a chassis 1, a support assembly, and a lifting mechanism. The lifting mechanism includes a support member 3, a boom 4 connected to the support member 3, and a lifting device 5 connected to the boom 4. The bottom of the support member 3 is connected to the chassis 1, the first end of the boom 4 is connected to the top of the support member 3, and the connecting end of the support assembly is rotatably connected to the second end of the boom 4. When the support assembly is in a supporting state, the supporting end of the support assembly extends in a direction away from the boom 4, and the support assembly is used to support the boom 4.

[0023] Specifically, the chassis 1 is a movable chassis 1, and its bottom can be equipped with structures such as casters to facilitate moving the lifting device to the preset working position.

[0024] Specifically, the lifting device 5 is used to directly grab heavy objects such as equipment and components.

[0025] The lifting device provided by this invention, when required for lifting operations, operates the support assembly to support the boom 4. Specifically, it drives the support assembly to rotate around the hinge point between the support assembly and the second end of the boom 4, causing the support end of the support assembly to extend downwards and firmly support the ground. At this time, the support end of the support assembly and the support member 3 fixed to the chassis 1 together form a bidirectional support for the boom 4, thus solving the technical problem of cantilever lifting devices being prone to overturning due to unilateral force in the prior art. When lifting equipment or heavy objects using the lifting device 5, the load is transmitted through the boom 4 and borne jointly by the support member 3 and the support assembly, forming a stable lever arm support. This avoids the risk of the device overturning during lifting and moving heavy objects, ensuring operational safety. Simultaneously, the stable support allows the lifting device to withstand larger loads, not only replacing traditional inefficient and dangerous manual lifting but also improving the efficiency of handling parts or equipment during maintenance while ensuring handling safety.

[0026] To optimize the above technical solution, a track 9 extending along the length of the boom 4 is provided on the boom 4, and the lifting device 5 includes a traveling crane 51 that can move along the track 9, a hook 52 connected to the traveling crane 51, and a winch mechanism for driving the hook 52 to move in a first direction.

[0027] Specifically, the hoisting mechanism can be integrated with components such as a motor, drum, and wire rope. The first direction is the vertical direction. The hook 52 is connected to the bottom of the overhead crane 51 and is driven by the hoisting mechanism to achieve independent lifting and lowering movement in the vertical direction (first direction).

[0028] Specifically, the overhead crane 51 can be equipped with its own drive mechanism, which can drive the overhead crane 51 to move along the track 9 by a motor driving gears, racks, or rollers.

[0029] During lifting operations, the lifting device is first stabilized using the support components. Operators can remotely or locally control the gantry crane 51 to move along the track 9 on the boom 4, precisely positioning the unloaded hook 52 directly above the load to be lifted. Then, the winch mechanism is operated to lower the hook 52 and hook the load, raising it to a safe height. At this point, if it is necessary to move the load to an ideal maintenance position above the chassis 1 or to avoid obstacles, there is no need to drive the chassis 1; simply control the gantry crane 51 to move along the track 9 towards the support component 3 (or in the opposite direction). This arrangement enables smooth horizontal movement of the lifted load, integrating the traveling and lifting functions of the lifting device into the lifting attachment 5, thus improving the ease of operation of the lifting device.

[0030] In order to enable the lifting device to adapt to the equipment being lifted at different heights or in different spatial positions and to expand the working range of the lifting device, the lifting device also includes a first drive member 32 and a connecting member 10. The first end of the boom 4 is rotatably connected to the top of the support member 3 through the connecting member 10. One end of the first drive member 32 is connected to the support member 3, and the other end of the first drive member 32 is connected to the boom 4. The first drive member 32 is used to drive the boom 4 to rotate around the connecting member 10.

[0031] Specifically, the connector 10 is a hinge shaft, which is used to rotatably connect the first end of the boom 4 to the top of the support 3. The first drive 32 is a power source, which can be a hydraulic cylinder. One end of the first drive 32 is connected to the support 3 and the other end is connected to the boom 4. It can convert its own telescopic motion into the pitching motion of the boom 4 around the hinge shaft.

[0032] In use, when the first driving component 32 is a hydraulic cylinder, operating the hydraulic cylinder causes the piston to extend, pushing the boom 4 upwards with its hinge point with the support component 3 as the center, thereby raising the overall working height of the boom 4 and the lifting device 5 on it; when the piston of the hydraulic cylinder retracts, it causes the boom 4 to tilt downwards, lowering the working height. This tilt adjustment can work in conjunction with the horizontal movement of the overhead crane 51 and the lifting of the winch, allowing the hook 52 to cover a fan-shaped three-dimensional space, facilitating situations where equipment maintenance requires crossing a certain height difference or approaching the equipment from different angles.

[0033] This arrangement expands the operating space and allows for flexible handling of complex maintenance scenarios where equipment is installed at varying heights or requires hoisting assistance from different angles such as the side or top of the equipment, thus enhancing the adaptability of the hoisting device.

[0034] In order to achieve stepless adjustment of the working height of the boom 4, the support member 3 includes a fixed part and a movable part 31. The fixed part and the movable part 31 are sleeved together. The movable part 31 is connected to the first end of the boom 4, and the movable part 31 is connected to a second driving member. The second driving member is used to drive the movable part 31 to move along the axial direction of the fixed part.

[0035] Specifically, the support member 3 forms a nested sleeve structure through the fixed part and the movable part 31. The fixed part is fixedly connected to the chassis 1, and the movable part 31 can slide axially relative to the fixed part. The second driving member directly acts on the movable part 31 to provide extension and retraction power for the movable part 31.

[0036] Specifically, the second driving component can be a telescopic hydraulic cylinder or an electric push rod.

[0037] In use, when the hoisting height needs to be adjusted, the second drive unit is activated. The second drive unit pushes or pulls the movable part 31, causing it to extend or retract along the axis of the fixed part. Since the first end of the boom 4 is connected to the top of the movable part 31, the raising and lowering of the movable part 31 directly drives the entire boom 4 and the support assembly installed at the far end of the boom 4 to change their vertical height synchronously, thereby changing the absolute height of the support plane of the boom 4. This is suitable for situations where the hoisting working plane needs to be raised or lowered as a whole.

[0038] This arrangement allows for direct adjustment of the base height of boom 4, enabling the lifting device to be suitable for various working conditions with different lifting working planes.

[0039] See Figure 3 To optimize the above technical solution, the support assembly includes a support rod 7, a rotating shaft 6, and a third drive component 8. The first end of the support rod 7 is rotatably connected to the second end of the boom 4 via the rotating shaft 6. One end of the third drive component 8 is connected to the boom 4, and the other end of the third drive component 8 is connected to the support rod 7. The third drive component 8 is used to drive the support rod 7 to rotate around the connecting shaft.

[0040] Specifically, the pivot 6 is the physical hinge shaft between the support rod 7 and the second end of the boom 4, used to realize the rotational connection between the two, and the third drive component 8 is the power source for the rotation of the support rod 7.

[0041] When the support needs to be deployed, the third drive component 8 (such as a hydraulic cylinder) actuates. For example, the piston of the hydraulic cylinder extends, pushing the support rod 7 to rotate around the pivot 6 towards the outside and below the boom 4 until the support end of the support rod 7 contacts the ground and is compacted, entering a stable support state. When it needs to be retracted, the piston of the hydraulic cylinder retracts, pulling the support rod 7 to rotate around the pivot 6 towards the boom 4 and finally fitting against the side or below the boom 4, reaching the retracted state. The third drive component 8 not only provides power but also locks the angle in the supported state and keeps it retracted in the retracted state to prevent accidental deployment.

[0042] This arrangement enables active and controllable switching between the support and storage states. Furthermore, the third drive component 8 can act as a lock when stopped, ensuring that the angle between the support rod 7 and the boom 4 is fixed in the support state and that the support rod 7 is tightly attached to the boom 4 in the storage state. This improves the stability of the lifting device under different working conditions and ensures the safety of handling.

[0043] In order to ensure that the support end of the support rod 7 can always effectively and stably contact the ground when the height or pitch angle of the boom 4 changes, the support rod 7 includes a rod body and a telescopic part 71. The telescopic part 71 is located at the second end of the support rod 7 and is telescopically connected to the end of the rod body away from the connecting shaft. The telescopic part 71 is connected to a fourth driving member, which is used to drive the telescopic part 71 to extend and retract relative to the rod body.

[0044] Specifically, the support rod 7 is a two-section rod body connected to the rotating shaft 6, and the telescopic part 71 is at the end of the rod body, which can extend and retract along the axial direction of the rod body. The fourth driving component is integrated between the rod body and the telescopic part 71, and is used to drive the extension and retraction of the telescopic part 71.

[0045] In use, with the support components in a supported state, when adjusting the height or angle, the system (or manually) can calculate or determine the required total length of the support rod 7 based on the new posture of the boom 4. Then, the fourth drive unit is controlled to operate, driving the telescopic part 71 to extend or retract relative to the rod body, thereby fine-tuning the effective length of the support rod 7 from the hinge point to the ground, ensuring that the support end of the support rod 7 is always in contact with the ground with appropriate pressure, maintaining stable bidirectional support.

[0046] This arrangement allows the support length of the support rod 7 to be adjustable, adapting to various working postures of the boom 4. It ensures that the support assembly can provide effective and stable ground support at any working height, while also freeing the boom 4's height and angle adjustment functions from the geometric constraints of the fixed-length support rod 7, thus expanding the applicability of the lifting device.

[0047] To ensure the stability of the support rod 7 when the lifting device is in a moving or non-working state, the boom 4 is connected to a locking mechanism. The position of the locking mechanism corresponds to the position of the second end of the support rod 7 when the support assembly is in the retracted state. The locking mechanism includes at least one fixed lug plate fixed to the boom 4, with a first pin hole on the fixed lug plate, a second pin hole at the second end of the support rod 7 that matches the first pin hole, a movable pin that can move axially through the first pin hole, an elastic reset member sleeved on the movable pin or located at the end of the movable pin for driving the movable pin to move along the axial direction of the second pin hole, and an unlocking member. The fixed end of the unlocking member is connected to the boom 4 or the fixed lug plate, and the movable end of the unlocking member is connected to the end of the movable pin away from the second pin hole. When the support assembly is in the retracted state, the movable pin is simultaneously inserted into the first pin hole and the second pin hole. When the support assembly is not in the retracted state, the movable end of the unlocking member pulls the movable pin out of the second pin hole. When the second end of the support rod 7 is arranged close to the boom 4, the support assembly is in the retracted state.

[0048] In use, when the support rod 7 rotates to its retracted position, fully against the boom 4, driven by the third drive component 8, the second pin hole on the support rod 7 aligns perfectly with the first pin hole on the fixed lug plate of the boom 4. At this point, under the push of the elastic reset component (such as a compression spring), the movable pin passes through the first pin hole and inserts into the second pin hole, mechanically locking the support rod 7 and the boom 4 together, forming a rigid unit. When it is necessary to unfold the support rod 7, first operate the unlocking component (such as a manual pull ring, an electromagnet, or a lever driven by a small linear motor). The movable end of the unlocking component pulls the movable pin, overcoming the spring force of the elastic reset component, causing the movable pin to completely exit the second pin hole, releasing the mechanical lock. Only then can the third drive component 8 drive the support rod 7 to rotate and unfold.

[0049] This arrangement ensures structural stability when the support components are stowed, and improves the safety of the lifting device during transportation and movement.

[0050] To optimize the above technical solution, the lifting device also includes a monitoring component and a controller. The monitoring component includes a pressure sensor located at the bottom of the support member 3 and / or the support end of the support component for real-time monitoring of the load at the support point, and an inclination sensor located on the chassis 1 for monitoring the tilt state of the chassis 1. The controller is electrically connected to the pressure sensor and the inclination sensor and is used to control the third drive member 8 to adjust the angle between the support rod 7 and the boom 4 based on the data from the pressure sensor and the inclination sensor, and / or control the fourth drive member to adjust the length of the support rod 7.

[0051] Specifically, the pressure sensor is used to monitor the ground pressure at the bottom of the support member 3 and / or the support end of the support assembly, which can reflect the load distribution. The tilt sensor is used to monitor the horizontal state of the chassis 1, which reflects the overall balance of the lifting device.

[0052] Specifically, the controller can be used to control the aforementioned drive mechanism, the first drive member 32, the second drive member, the third drive member 8, the fourth drive member, and the fifth drive member 42 described below.

[0053] During lifting operations, pressure and tilt sensors continuously transmit data to the controller. The controller incorporates a safety algorithm model to calculate the center of gravity position and overturning moment in real time. For example, when the lifted load reaches the far end of boom 4, causing a sudden increase in pressure at the far support point and a decrease in pressure at the near end, while the chassis 1 tilts slightly, the system determines there is a risk of imbalance. The controller immediately issues a command to adjust the third drive component 8, fine-tuning the angle of the support rod 7 to change the lever arm; simultaneously / or adjusting the fourth drive component to fine-tune the support length to change the ground force distribution. Through this dynamic fine-tuning, the support forces on both sides are rebalanced, and the chassis 1 returns to level. This arrangement actively monitors and adjusts the overall force parameters of the lifting device, ensuring that the lifting device always operates within the optimal stability range through real-time feedback control. Even under unfavorable ground conditions or complex lifting conditions, it maintains operational accuracy and stability, thereby improving handling efficiency and safety.

[0054] See Figure 5 In order to adjust the lateral support position of the support assembly without moving the chassis 1, the boom 4 includes a main boom body and a lateral telescopic boom 41. The lateral telescopic boom 41 is slidably disposed on the main boom body. The support assembly is connected to the end of the lateral telescopic boom 41 away from the main boom body. The boom 4 is also connected to a fifth drive member 42, which is used to drive the lateral telescopic boom 41 to extend and retract along the length direction of the main boom body.

[0055] Specifically, the boom 4 consists of a main boom body and a transverse telescopic boom 41 that can slide out from the end of the main boom body. The fifth drive unit 42 is used to provide power to drive the extension and retraction of the transverse telescopic boom 41, and the support assembly is connected to the end of the transverse telescopic boom 41.

[0056] When facing wide-body equipment or obstacles nearby, before deploying the support assembly, operate the fifth drive unit 42 to extend the lateral telescopic boom 41 horizontally outward from the main boom. Since the support assembly is connected to the end of the lateral telescopic boom 41, its hinge point also shifts outward. Then deploy the support rod 7. In this way, the ground support point of the support rod 7 rests on the ground outside the equipment body or obstacles. The gantry crane 51 can still run on the track 9 of the main boom, but the torque of the heavy object it lifts is mainly balanced by this outwardly shifted support point, thus breaking through the limitation of the fixed width of the boom 4, allowing the support point to be flexibly selected according to the ground conditions on site, and enhancing the lateral adaptability of the lifting device.

[0057] To optimize the above technical solution, the lifting device also includes a counterweight structure 2, which includes a first counterweight 21 disposed on the chassis 1 and / or a second counterweight 22 disposed away from the support assembly and connected to the boom 4.

[0058] Specifically, the first counterweight 21 is mounted on the chassis 1, usually located on one side near the first end of the boom 4, and the second counterweight 22 is mounted on the boom 4, located at one end near the support member 3. The first counterweight 21 and the second counterweight 22 can be fixed weights or counterweights with adjustable weight or position.

[0059] Specifically, the first counterweight 21 increases the weight at the rear of the chassis 1, generating a balancing moment to resist the overturning moment of the suspended load. The second counterweight 22 acts directly on the proximal end of the boom 4, offsetting part of the bending moment on the hinge point of the support member 3 caused by the suspended load, while also helping to maintain the overall center of gravity balance of the lifting device. During the design or use of the lifting device, appropriate counterweights can be calculated, installed, or adjusted according to the rated lifting capacity and boom length. When lifting operations are performed, these counterweights work in conjunction with the bidirectional support structure to ensure that the center of gravity of the device always falls within the area formed by the support points of the chassis 1 and the support components, further guaranteeing the stability, handling efficiency, and handling safety of the lifting device.

[0060] It should be noted that the proximal end of the boom 4 refers to the end of the boom 4 closest to the vertical support member 3, and the distal end of the boom 4 refers to the end of the boom 4 furthest from the vertical support member 3.

[0061] It should be noted that the lifting device provided by this invention can be used in the field of coal mine production equipment technology or other fields. Other fields refer to any field other than the field of coal mine production equipment technology. The above are merely examples and do not limit the application areas of the lifting device provided by this invention.

[0062] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0063] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0064] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A lifting device, characterized in that, It includes a chassis, a support assembly, and a lifting mechanism, wherein the lifting mechanism includes a support member, a boom connected to the support member, and a lifting device connected to the boom; The bottom of the support member is connected to the chassis; The first end of the boom is connected to the top of the support member, and the connecting end of the support assembly is rotatably connected to the second end of the boom. When the support assembly is in a supported state, the support end of the support assembly extends in a direction away from the boom, and the support assembly is used to support the boom.

2. The lifting device according to claim 1, characterized in that, The boom is provided with a track extending along the length of the boom; The lifting device includes a traveling crane that can move along the track, a hook connected to the traveling crane, and a winch mechanism for driving the hook to move in a first direction.

3. The lifting device according to claim 1, characterized in that, It also includes a first drive component and a connector, wherein the first end of the boom is rotatably connected to the top of the support component via the connector; One end of the first driving member is connected to the support member, and the other end of the first driving member is connected to the boom. The first driving member is used to drive the boom to rotate around the connecting member.

4. The lifting device according to claim 1, characterized in that, The support member includes a fixed part and a movable part, and the fixed part is sleeved with the movable part; The movable part is connected to the first end of the boom, and the movable part is connected to a second driving member, which is used to drive the movable part to move along the axial direction of the fixed part.

5. The lifting device according to claim 1, characterized in that, The support assembly includes a support rod, a rotating shaft, and a third driving component. The first end of the support rod is rotatably connected to the second end of the boom via the rotating shaft. One end of the third driving component is connected to the boom, and the other end of the third driving component is connected to the support rod. The third driving component is used to drive the support rod to rotate around the connecting shaft.

6. The lifting device according to claim 5, characterized in that, The support rod includes a rod body and a telescopic part. The telescopic part is located at the second end of the support rod and is telescopically connected to the end of the rod body away from the connecting shaft. The telescopic part is connected to a fourth driving member, which is used to drive the telescopic part to extend and retract relative to the rod body.

7. The lifting device according to claim 5, characterized in that, When the second end of the support rod is positioned close to the boom, the support assembly is in a retracted state. The boom is connected to a locking mechanism, the position of which corresponds to the position of the second end of the support rod when the support assembly is in the retracted state. The locking mechanism includes: At least one fixing lug is fixed to the boom, and the fixing lug has a first pin hole; A second pin hole is formed at the second end of the support rod and matches the first pin hole; A movable pin that can be axially moved and inserted through the first pin hole; An elastic reset member sleeved on or disposed at the end of the movable pin for driving the movable pin to move along the axial direction of the second pin hole; And an unlocking component, the fixed end of which is connected to the boom or the fixed lug, and the movable end of which is connected to the end of the movable pin away from the second pin hole; When the support component is in the retracted state, the movable pin is simultaneously inserted into the first pin hole and the second pin hole; When the support component is in the unfolded state, the movable end of the unlocking member pulls the movable pin out of the second pin hole.

8. The lifting device according to claim 6, characterized in that, It also includes a monitoring component and a controller. The monitoring component includes a pressure sensor located at the bottom of the support member and / or the support end of the support member for real-time monitoring of the load at the support point, and an tilt sensor located on the chassis for monitoring the tilt state of the chassis. The controller is electrically connected to the pressure sensor and the tilt sensor, and is used to control the third drive component to adjust the angle between the support rod and the boom based on the data from the pressure sensor and the tilt sensor, and / or control the fourth drive component to adjust the length of the support rod.

9. The lifting device according to claim 1, characterized in that, The boom includes a main boom body and a horizontal telescopic boom, the horizontal telescopic boom being slidably disposed on the main boom body, and the support assembly being connected to the end of the horizontal telescopic boom away from the main boom body; The boom is also connected to a fifth driving component, which is used to drive the lateral telescopic boom to extend and retract along the length of the main boom body.

10. The lifting device according to any one of claims 1 to 9, characterized in that, It also includes a counterweight structure, which includes a first counterweight disposed on the chassis and / or a second counterweight connected to the boom away from the support assembly.

Images