Cab hoist

Abstract

The application relates to the technical field of hoisting equipment, in particular to a cab lifting appliance. The lifting appliance comprises a lifting frame, a driving mechanism, two sliding frames and lifting arms. The lifting frame is a frame structure extending along a first direction, and the two ends of the lifting frame are provided with guide rail assemblies. The first direction is parallel to the horizontal plane. Each sliding frame is slidably connected with one guide rail assembly. The driving mechanism is connected with the sliding frames to drive at least one sliding frame to move along the first direction. Each lifting arm is connected with one sliding frame. The lifting arm spacing of the lifting appliance can be flexibly adapted to the hoisting requirements of driving cabins of different sizes, flexible and accurate hoisting and transportation and efficient operation are realized, and the lifting appliance is suitable for driving cabins and operation scenes of various specifications.

Description

Technical Field

[0001] This application relates to the field of lifting equipment technology, and more specifically, to a cab-mounted lifting device. Background Technology

[0002] In the manufacturing process of heavy-duty trucks, cab hoisting is a critical step, and the performance of the hoisting equipment directly affects production efficiency and safety. Currently, existing heavy-duty truck cab hoists have significant limitations, only capable of hoisting cabs with an assembly weight of less than 1.2 tons and a width of less than 2.2 meters. When the assembly weight of a new product's cab exceeds 1.2 tons and the width reaches 2.5 meters, existing hoists, due to insufficient structural strength and poor adaptability to hoisting dimensions, cannot meet the lifting requirements, severely hindering the production and assembly process of new heavy-duty trucks.

[0003] Existing lifting equipment suffers from structural design flaws that limit its load-bearing capacity, making it unable to distribute and support the load of heavy cabs, which can easily lead to structural deformation or even safety accidents. At the same time, the fixed boom spacing is difficult to adapt to the lifting needs of cabs of different sizes, making it impossible to achieve precise clamping and lifting of large cabs, resulting in insufficient production flexibility and difficulty in meeting the increasingly diversified market demands. Utility Model Content

[0004] In view of this, this application provides a cab-mounted spreader designed to improve the problems of poor load-bearing capacity and size adaptability in the prior art.

[0005] This application provides a cab-mounted lifting device, comprising: The hanger is a frame structure extending along a first direction, and guide rail assemblies are provided at both ends of the hanger. The first direction is parallel to the horizontal plane. Two sliding frames, each of which is slidably connected to one of the guide rail assemblies; A drive mechanism, connected to the sliding frame for driving at least one of the sliding frames to move along a first direction; and Two booms, each boom being connected to one of the sliding frames.

[0006] Preferably, the driving mechanism includes two telescopic rods, the fixed end of each telescopic rod is mounted on the hanger, and the movable end of each telescopic rod is connected to a corresponding sliding frame. The telescopic rods are used to drive the sliding frame to move along the first direction.

[0007] Preferably, the drive mechanism further includes a linkage transmission assembly, which includes a motor, a first drive arm, and two second drive arms. The output shaft of the motor is connected to the middle position of the first drive arm. The two ends of the first drive arm are rotatably connected to one end of each of the two second drive arms, and the other ends of each of the two second drive arms are rotatably connected to two sliding frames.

[0008] Preferably, it further includes a control mechanism electrically connected to the drive mechanism for sensing the weight lifted by the cab spreader and controlling the drive state of the drive mechanism.

[0009] Preferably, the hanger includes two crossbeams arranged opposite each other in a second direction, the crossbeams extending along a first direction, the second direction being parallel to the horizontal plane and perpendicular to the first direction; The guide rail assembly includes two guide rail units, each guide rail unit corresponding to one end of the hanger, and each guide rail unit includes two guide rail strips extending along a first direction; in each guide rail unit, each guide rail strip is installed on one of the crossbeams; Each of the sliding frames is provided with two slider units, and the slider units are slidably connected to the guide rails one by one.

[0010] Preferably, each of the guide rails has a guide groove on its side in a first direction, and the guide rail is adapted to the guide groove; the slider unit includes a sliding block, and the top surface of the guide rail is in contact with the bottom surface of the sliding block.

[0011] Preferably, both ends of the crossbeam are provided with limiting blocks.

[0012] Preferably, there are multiple sliding blocks, and the multiple sliding blocks are evenly arranged along the extension direction of the guide rail.

[0013] Preferably, the cab lifting device further includes a top frame, which is installed in the middle of the lifting frame. The top frame is provided with a connector, and the top frame is connected to the overhead crane, gantry crane or rail-mounted lifting equipment in the work workshop through the connector.

[0014] Preferably, a pad is provided at the end of the boom away from the corresponding sliding frame, and the pad is used to support the cab door frame.

[0015] Compared with the prior art, the cab-mounted spreader provided in this application achieves at least the following beneficial effects: The cab-mounted spreader provided in this application includes a frame, a drive mechanism, two sliding frames, and a boom. The frame structure of the frame provides a stable support foundation and installation carrier for the drive mechanism, sliding frames, and boom. The sliding frames connected to the boom are slidably connected to the frame via guide rail assemblies. This ensures smooth sliding of the sliding frames while restricting their movement in directions other than the first direction. Furthermore, during lifting, the weight of the cab can be transferred to the frame along the sliding frames, enhancing the overall rigidity, strength, and load-bearing capacity of the spreader. The drive mechanism can drive at least one sliding frame to move in the first direction. The boom connected to the sliding frames can be moved adaptively, thereby changing the distance between the two booms. Increasing the boom spacing allows for flexible adaptation to the lifting needs of cabs of different sizes, while reducing the boom spacing allows for precise connection with both sides of the cab to achieve assembly of the spreader and the cab, enabling flexible and precise lifting and efficient operation. It can adapt to various cab specifications and operating scenarios.

[0016] Of course, any product implementing this application need not specifically need to achieve all of the technical effects described above at the same time.

[0017] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0019] Figure 1 The figure shown is a three-dimensional structural schematic diagram (I) of the cab-mounted lifting device provided in the embodiment of this application; Figure 2 The image shown is a three-dimensional schematic diagram (II) of the cab-mounted lifting device provided in the embodiment of this application. Figure 3 The diagram shown is a schematic representation of the connection structure between the drive mechanism and the sliding frame in an embodiment of this application. Figure 4 As shown Figure 1 A magnified view of part A in the middle.

[0020] Explanation of reference numerals in the attached figures: 100-Hanger, 110-Crossbeam, 111-Limiting block, 200-Sliding frame, 210-Sliding block, 300-Drive mechanism, 310-Telescopic rod, 320-Linkage transmission assembly, 321-Motor, 322-First drive arm, 323-Second drive arm, 400-Hanging arm, 410-Padded block, 500-Guide rail assembly, 510-Guide rail strip, 511-Guide groove, 600-Top frame, 610-Connector. Detailed Implementation

[0021] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0022] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0023] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0024] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0027] Figure 1 The image shown is a three-dimensional structural schematic diagram (I) of the cab-mounted lifting device provided in an embodiment of this application. Please refer to... Figure 1 This application provides a cab lifting device, including a lifting frame 100, a drive mechanism 300, two sliding frames 200, and a boom 400.

[0028] The hanger 100 is a frame structure extending along the first direction D1. The two ends of the hanger 100 are provided with guide rail assemblies 500. The first direction D1 is parallel to the horizontal plane. Each sliding frame 200 is slidably connected to a corresponding guide rail assembly 500; The drive mechanism 300 is connected to the slide frame 200 to drive at least one slide frame 200 to move along the first direction D1; Each boom 400 is connected to a corresponding sliding frame 200.

[0029] It should be understood that the drive mechanism 300 can drive at least one sliding frame 200 to move along the first direction D1. That is, the drive mechanism 300 can drive one or two sliding frames 200 to move along the first direction D1. When driving two sliding frames 200, it is not limited to synchronous or asynchronous driving. In this way, the movement of the two booms 400 can be controlled individually or collaboratively according to actual needs. When lifting a large cab, the drive mechanism 300 can drive two sliding frames 200 simultaneously, so that the booms 400 can adjust their positions synchronously and complete the lifting quickly. In space-constrained operation scenarios, the drive mechanism 300 can drive only one sliding frame 200 to achieve partial adjustment of the boom 400's position, improving operation efficiency and reducing lifting time costs.

[0030] In use, start the drive mechanism 300. The drive mechanism 300 drives one or two sliding frames 200 to move along the first direction D1. The moving sliding frames 200 drive the booms 400 to move along the first direction D1. Adjust the distance between the two booms 400. If necessary, increase the distance between the two booms 400 to ensure that the cab is located between the two booms 400. Reduce the distance between the two booms 400 to connect and assemble with the sides of the cab. Then the cab can be lifted.

[0031] In this embodiment, the cab-mounted lifting device includes a lifting frame 100, a drive mechanism 300, two sliding frames 200, and a boom 400. The frame structure of the lifting frame 100 provides a stable support foundation and mounting carrier for the drive mechanism 300, the sliding frames 200, and the boom 400. The sliding frames 200, connected to the boom 400, are slidably connected to the lifting frame 100 via a guide rail assembly 500. This ensures smooth sliding of the sliding frames 200 while restricting their movement in directions other than the first direction D1. Furthermore, during lifting, the weight of the cab can be transmitted along the sliding frames 200. The lifting frame 100 is provided, which enhances the overall rigidity, strength and load-bearing capacity of the lifting device; the drive mechanism 300 can drive at least one sliding frame 200 to move along the first direction D1, and the boom 400 connected to the sliding frame 200 can be moved adaptively, so that the distance between the two booms 400 can be changed. Increasing the distance between the booms 400 can flexibly adapt to the lifting needs of cabs of different sizes, while reducing the distance between the booms 400 allows for precise connection and assembly with both sides of the cab, realizing flexible and precise lifting and efficient operation, and can adapt to various specifications of cabs and operating scenarios.

[0032] Figure 2 The image shown is a three-dimensional schematic diagram (II) of the cab-mounted lifting device provided in the embodiment of this application. Figure 3 The diagram shown is a schematic representation of the connection structure between the drive mechanism and the sliding frame in an embodiment of this application. See also... Figures 1 to 3In some embodiments, the drive mechanism 300 includes two telescopic rods 310, the fixed end of each telescopic rod 310 is mounted on the hanger 100, and the movable end of each telescopic rod 310 is correspondingly connected to a sliding frame 200. The telescopic rods 310 are used to drive the sliding frame 200 to move along the first direction D1.

[0033] In one specific feasible embodiment, the fixed end of the telescopic boom 310 is installed at the middle of the lifting frame 100 in the first direction D1. When the lifting device is in use, the telescopic boom 310 is controlled to extend and retract. When the telescopic boom 310 extends, the movable end of the telescopic boom 310 moves along its axial direction away from its fixed end. The movable end of the telescopic boom 310 drives the sliding frame 200 connected to it to move along the first direction D1 toward the end of the lifting frame 100, and the distance between the two booms 400 increases, so that the cab can be located between the booms 400. When the telescopic boom 310 shortens, the movable end of the telescopic boom 310 moves along its axial direction toward the end closer to its fixed end. The movable end of the telescopic boom 310 drives the sliding frame 200 connected to it to move along the first direction D1 toward the middle of the lifting frame 100, and the distance between the two booms 400 decreases until it is connected and assembled with both sides of the cab, so that the cab can be lifted and transported subsequently.

[0034] In specific implementation, the telescopic rod 310 can be driven by pneumatic, hydraulic or electric means, or other power drive methods that can achieve telescopic function. This application does not limit this.

[0035] In this embodiment, the two telescopic rods 310 are respectively connected to the two sliding frames 200. Therefore, the movement of the sliding frames 200 can be controlled independently or collaboratively, thereby controlling the movement of the corresponding booms 400. During operation, the movement of one boom 400 can be controlled individually, or both booms 400 can be driven synchronously, thus achieving precise assembly before lifting from the cab. When the two booms 400 move in the same direction, assembly can be completed even if the cab is not in the preset lifting position, and short-distance displacement adjustments can be made after assembly, significantly improving the flexibility of the lifting equipment in different operating scenarios.

[0036] See Figures 1 to 3 In some embodiments, the drive mechanism 300 further includes a linkage transmission assembly 320, which includes a motor 321, a first drive arm 322, and two second drive arms 323. The output shaft of the motor 321 is connected to the middle position of the first drive arm 322. The two ends of the first drive arm 322 are respectively rotatably connected to one end of the two second drive arms 323, and the other ends of the two second drive arms 323 are respectively rotatably connected to the two sliding frames 200.

[0037] When the lifting device provided in this embodiment is in use, the motor 321 is started. The output shaft of the motor 321 outputs torque and drives the first drive arm 322 to rotate. The rotating first drive arm 322 drives the two second drive arms 323 connected to its two ends to push and pull the sliding frame 200 synchronously, so that the two sliding frames 200 drive the two booms 400 to move synchronously towards or away from each other. When the two booms 400 move away from each other, the two booms 400 extend outward synchronously to accommodate cabs of different sizes; when the two booms 400 move towards each other, the two booms 400 approach each other synchronously and the distance between them decreases, and they retract inward to clamp the cab.

[0038] In this embodiment, the electric drive structure of the linkage transmission assembly 320 enables synchronous linkage of the two sliding frames 200, ensuring the positional accuracy of the two booms 400 when they move in opposite directions or back to back, avoiding the tilting or uneven force on the cab caused by the asynchronous extension and retraction of the telescopic rod 310, and achieving symmetrical clamping of the cab; the components of the linkage transmission assembly 320 are rigidly mechanically connected, and the motor 321 can amplify the driving torque through the first drive arm 322, so that the smoothness of the movement of the sliding frame 200 can be maintained even under heavy load conditions, reducing the lifting safety risks caused by the driving fluctuation of the telescopic rod 310. See Figure 1 In some embodiments, the cab-mounted spreader also includes a control mechanism electrically connected to the drive mechanism 300 for sensing the weight lifted by the cab-mounted spreader and controlling the drive state of the drive mechanism 300.

[0039] This embodiment achieves automated control of the lifting device adjustment by adding a control mechanism, which reduces the difficulty of lifting the device during assembly, improves the adjustment efficiency of the device, and reduces the labor intensity of the operator; it also enables the device to be adjusted according to the actual load, ensuring that the device is used for lifting operations within a safe load range and improving work safety.

[0040] In some embodiments, the hanger 100 includes two crossbeams 110 disposed opposite each other in a second direction D2, the crossbeams 110 extending along a first direction D1, the second direction D2 being parallel to the horizontal plane and perpendicular to the first direction D1; the guide rail assembly 500 includes two guide rail units, each guide rail unit corresponding to one end of the hanger 100, each guide rail unit including two guide rail strips 510 extending along the first direction D1; in each guide rail unit, each guide rail strip 510 is correspondingly mounted on one of the crossbeams 110; each sliding frame 200 is provided with two slider units, the slider units being slidably connected to the guide rail strips 510 one-to-one.

[0041] In this embodiment, the lifting frame 100 includes two crossbeams 110, which form a rigid frame in the second direction D2, effectively resisting lateral forces and torques during lifting and reducing the risk of deformation of the lifting frame 100. The guide rail assembly 500 includes two guide rail units, each of which includes two guide rail strips 510. The double guide rail strips 510 layout of each guide rail unit (corresponding to the crossbeams 110) provides multi-point support, ensuring that the sliding frame 200 is subjected to uniform force during movement. The sliding frame 200 is provided with two slider units, which are slidably connected to the double guide rail strips 510 to form a stable guiding system, restricting the movement of the sliding frame 200 in directions other than the first direction D1, ensuring that the boom 400 moves accurately along a predetermined route, and increasing the contact area, reducing the pressure per unit area, which is beneficial to improving the life of the lifting equipment and is suitable for high-frequency lifting operations. In addition, the structural design of the double crossbeams 110 and double guide rail strips 510 can distribute the weight of the cab to multiple support points, reducing the risk of local stress concentration.

[0042] Figure 4 As shown Figure 1 A magnified view of section A in the middle. See also... Figure 1 and Figure 4 In some embodiments, each guide rail 510 has a guide groove 511 on its side in the first direction D1. The guide rail 510 is adapted to the guide groove 511, limiting the displacement of the sliding frame 200 in directions other than the first direction D1, ensuring that the boom 400 moves accurately along a predetermined path, and improving lifting accuracy and reliability. The top surface of the guide rail 510 contacts the bottom surface of the sliding block 210, increasing the contact area, reducing the pressure per unit area, reducing wear, and improving the service life of the guide rail. The lifting device provided in this embodiment optimizes the load distribution, distributing the weight of the cab to multiple support points, reducing the risk of local stress concentration, and enabling the lifting device to adapt to lifting cabs with greater weight.

[0043] See Figure 4 In some embodiments, limit blocks 111 are provided at both ends of the crossbeam 110.

[0044] In practical implementation, the limiting block 111 can be made of a material with shock absorption and elasticity to reduce the noise generated when the sliding block 210 collides with the limiting block 111.

[0045] In this embodiment, the limiting block 111 can effectively limit the movement range of the sliding frame 200 in the first direction D1, preventing it from detaching from the guide rail and causing a safety accident; at the same time, during the hoisting process, it can prevent the sliding frame 200 from excessive displacement caused by inertia or external force impact, ensuring the accurate positioning of the boom 400 and improving the hoisting stability; in addition, the limiting block 111 can also reduce the wear of the guide rail end and extend the overall service life of the lifting device.

[0046] In some embodiments, there are multiple sliding blocks 210, which are evenly arranged along the extension direction of the guide rail 510. The multi-point support provided by the multiple sliding blocks 210 can distribute the load of the sliding frame 200 and the cab, making the force on the sliding frame 200 more balanced during movement and improving the reliability and durability of the spreader structure.

[0047] In some embodiments, the cab-mounted spreader further includes a top frame 600, which is installed in the middle of the spreader 100. The top frame 600 is provided with a connector 610, and the top frame 600 is connected to the overhead crane, gantry crane, or rail-mounted lifting equipment in the work area via the connector 610. Thus, after the cab-mounted spreader is assembled with the cab, the overhead crane, gantry crane, or rail-mounted lifting equipment in the work area can move the cab and spreader to enable subsequent transportation operations.

[0048] In some embodiments, a pad 410 is provided at one end of the boom 400 away from the corresponding sliding frame 200. The pad 410 is used to support the cab door frame. The pad 410 can distribute local pressure and has a buffering effect, which can reduce the risk of deformation of the cab door frame under force and reduce the damage to the cab door frame caused by vibration during hoisting.

[0049] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A cab-mounted lifting device, characterized in that, include: The hanger is a frame structure extending along a first direction, and guide rail assemblies are provided at both ends of the hanger. The first direction is parallel to the horizontal plane. Two sliding frames, each of which is slidably connected to one of the guide rail assemblies; A drive mechanism, connected to the sliding frame, is used to drive at least one of the sliding frames to move along a first direction; as well as Two booms, each boom being connected to one of the sliding frames.

2. The cab-mounted lifting device as described in claim 1, characterized in that, The drive mechanism includes two telescopic rods. The fixed end of each telescopic rod is installed on the hanger, and the movable end of each telescopic rod is connected to a corresponding sliding frame. The telescopic rods are used to drive the sliding frame to move along the first direction.

3. The cab-mounted lifting device as described in claim 2, characterized in that, The drive mechanism further includes a linkage transmission assembly, which includes a motor, a first drive arm, and two second drive arms. The output shaft of the motor is connected to the middle position of the first drive arm. The two ends of the first drive arm are rotatably connected to one end of each of the two second drive arms, and the other ends of each of the two second drive arms are rotatably connected to two sliding frames.

4. The cab-mounted lifting device as described in claim 1, characterized in that, It also includes a control mechanism electrically connected to the drive mechanism for sensing the weight lifted by the cab spreader and controlling the drive state of the drive mechanism.

5. The cab-mounted lifting device as described in claim 1, characterized in that, The hanger includes two crossbeams arranged opposite each other in a second direction, the crossbeams extending along a first direction, the second direction being parallel to the horizontal plane and perpendicular to the first direction; The guide rail assembly includes two guide rail units, each guide rail unit corresponding to one end of the hanger, and each guide rail unit includes two guide rail strips extending along a first direction; in each guide rail unit, each guide rail strip is installed on one of the crossbeams; Each of the sliding frames is provided with two slider units, and the slider units are slidably connected to the guide rails one by one.

6. The cab-mounted lifting device as described in claim 5, characterized in that, Each of the guide rails has a guide groove on its side in a first direction, and the guide rail is adapted to the guide groove; the slider unit includes a sliding block, and the top surface of the guide rail is in contact with the bottom surface of the sliding block.

7. The cab-mounted lifting device as described in claim 5, characterized in that, Limiting blocks are provided at both ends of the crossbeam.

8. The cab-mounted lifting device as described in claim 6, characterized in that, The number of sliding blocks is multiple, and the multiple sliding blocks are evenly arranged along the extension direction of the guide rail.

9. The cab-mounted lifting device as described in claim 1, characterized in that, It also includes a top frame, which is installed in the middle of the hanger. The top frame is provided with a connector, and the top frame is connected to the overhead crane, gantry crane or rail-mounted lifting equipment in the work workshop through the connector.

10. The cab-mounted lifting device as described in claim 1, characterized in that, The end of the boom away from the corresponding sliding frame is provided with a pad, which is used to support the cab door frame.

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