A vehicle cab lifting device

Abstract

The utility model belongs to lifting equipment technical field, concretely relates to a vehicle cab lifting device, including main body frame, support crossbeam, drive mechanism, guide mechanism, rotary seat, pull tube, limit block and spring. The utility model has replaced manual operation, has liberated operation personnel from high -intensity repetitive labor completely, has eliminated occupational health risk such as arm muscle strain, and its automation operation speed is constant fast, has shortened single pressure lifting operation time significantly, has effectively accelerated production rhythm, has improved the efficiency of overall assembly line, still need not again in the station configuration special post personnel, thereby optimized human resources, reduced artificial cost, and the vertical linear motion provided by drive mechanism is adaptively converted into the arc motion that accords with the natural swing track of lifting handle, to this end, it is ensured that lifting force is always efficient, vertically acts on handle, guarantees the smoothness and stability of pressure lifting operation.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, specifically relating to a vehicle cab lifting device. Background Technology

[0002] In the assembly lines for trucks, dump trucks, and wide-body mining dump trucks, cab lifting is a critical work station. At this station, the cab needs to be lifted and held at a certain angle so that assembly personnel can enter under the cab to install, connect, and debug components such as chassis pipelines, drive shafts, and gearbox control mechanisms.

[0003] However, for vehicles that are not equipped with or have not yet activated the electric / hydraulic lifting system, the lifting action relies entirely on manual operation; the operator needs to repeatedly press and pull the handle installed on the lifting pump under the cab to manually pump oil to generate hydraulic pressure, drive the lifting cylinder, and thus slowly lift the cab.

[0004] This traditional manual labor method has the following significant drawbacks: First, the operator needs to perform high-intensity repetitive labor, which can easily lead to arm muscle fatigue and injury, posing a potential occupational health hazard. Second, the speed of manual operation is inconsistent and relatively slow, which reduces production efficiency and also interferes with the overall production rhythm of the production line. Third, the use of human resources is unreasonable. A dedicated operator is required to complete this monotonous and mechanical labor, resulting in a waste of human resources. Utility Model Content

[0005] The purpose of this utility model is to provide a vehicle cab lifting device that solves the technical problems of high labor intensity, easy muscle injury, monotonous and boring operation, low production efficiency and labor occupation in the prior art.

[0006] This utility model discloses a vehicle cab lifting device, comprising: Main framework; Support beams are arranged within the main frame; The drive mechanism is fixedly installed on the main frame, and its output end is connected to the support beam for driving the support beam to perform vertical lifting and lowering movements. A guiding mechanism is fixedly installed within the main frame and connected to the supporting beam, used to guide the lifting and lowering movement of the supporting beam; The rotating seat is rotatably mounted on the supporting crossbeam and can rotate freely in the vertical plane; The lifting tube has one end axially movable through the rotating seat and the other end extends from the front side of the main frame, and its outer periphery is provided with a radially protruding limiting member; A limiting block is fixedly installed at one end of the lifting tube that passes through the rotating seat; A spring is sleeved on the lifting tube and constrained between the limiting member and the rotating seat.

[0007] This application replaces manual operation, completely freeing operators from high-intensity repetitive labor, eliminating occupational health risks such as arm muscle strain, and its automated operation speed is constant and fast, significantly shortening the time of a single lifting operation, effectively accelerating the production cycle, improving the efficiency of the overall assembly line, and eliminating the need to set up dedicated personnel at this workstation, thereby optimizing human resources and reducing labor costs. It also adaptively converts vertical linear motion into arc motion that conforms to the natural swing trajectory of the lifting handle, thereby ensuring that the lifting force always acts on the handle efficiently and vertically, ensuring the smoothness and stability of the lifting operation.

[0008] Based on the above technical solution, the solution of this application can be further improved as follows: Preferably, the guiding mechanism includes: Two guide modules are symmetrically located at both ends of the support beam. This design forms a stable two-point support structure that can effectively resist the eccentric load moment that may be generated during the lifting process, greatly enhancing the rigidity and stability of the lifting process. They also share the load, avoiding stress concentration, thereby optimizing the force distribution and improving the load-bearing capacity.

[0009] Preferably, the guide module includes: The guide rail is vertically and fixedly installed within the main frame; The slide is fixedly installed at the end of the supporting beam and slides in cooperation with the guide rail. This solution provides a high-precision, high-rigidity, low-friction linear and stable guide for the lifting and lowering movement of the supporting beam, thereby effectively eliminating swaying and eccentric loading.

[0010] Preferably, it includes: The base plate is fixedly installed at the bottom of the main frame; Multiple casters are installed at intervals on the bottom surface of the base plate; this solution provides the device with a high degree of mobility and flexibility, making it easy to transport and move, thereby improving the deployment efficiency of the equipment and expanding its application range.

[0011] Preferably, the driving mechanism is a reciprocating cylinder, the cylinder body of which is fixedly mounted on the base plate, and the end of its piston rod is fixedly connected to the bottom surface of the supporting crossbeam. This solution has the advantages of simple structure, compact layout, low cost, strong power, high reliability and easy control.

[0012] Preferably, it includes: Two support plates are symmetrically fixedly installed on the top surface of the support beam and respectively attached to both sides of the rotating seat; The rotating seat has coaxial convex shafts on both sides, which are rotatably mounted on the corresponding support plates. This design improves structural strength and impact resistance, enhances reliability and load-bearing capacity, avoids swaying and deviation, ensures the accuracy of the lifting action, and facilitates processing, installation, and maintenance.

[0013] Preferably, it includes: Two proximity switches are arranged vertically at intervals and are fixedly installed on the main frame; The trigger element is fixedly installed on the support beam and corresponds to the proximity switch. By adopting this solution and cooperating with the control system, the fully automated cycle of the pressure lifting operation is realized, which improves work efficiency and automation level, and ensures that the height of each pressure lifting is completely consistent, thereby providing a stable working environment for subsequent assembly operations and ensuring product quality.

[0014] Preferably, it includes: Several handles are fixedly installed on the rear side of the main frame; this design provides the operator with a comfortable and reliable grip position, making it easy to pull, push and turn the device.

[0015] Preferably, it includes: The electrical control box is fixedly installed on the rear side of the main frame and is connected to the drive mechanism for controlling the operation of the drive mechanism. This solution integrates all electrical control units into one place, making the equipment interface clear and facilitating rapid deployment and maintenance of the device on the production line.

[0016] Through the above technical solution, this utility model achieves the following beneficial effects: 1. This application provides stable and reliable vertical lifting power through a drive mechanism and a guide mechanism, thereby replacing manual operation, completely freeing operators from high-intensity repetitive labor, eliminating occupational health risks such as arm muscle strain, and its automated operation speed is constant and fast, significantly shortening the time of a single lifting operation, effectively speeding up the production cycle, improving the efficiency of the overall assembly line, and eliminating the need to set up dedicated personnel at this workstation, thereby optimizing human resources and reducing labor costs; 2. This application uses the cooperation of a rotating seat, an axially movable lifting tube, and a spring to adaptively convert the vertical linear motion provided by the drive mechanism into an arc motion that conforms to the natural swing trajectory of the lifting handle. This ensures that the lifting force is always applied to the handle efficiently and vertically, guaranteeing the smoothness and stability of the lifting operation. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a perspective view (front view) of the vehicle cab lifting device described in a specific embodiment. Figure 2 for Figure 1 Assembly diagram of the central rotary seat; Figure 3 This is a perspective view (rear view) of the vehicle cab lifting device described in a specific embodiment. Explanation of reference numerals in the attached figures: 1. Main frame; 2. Support beam; 3. Drive mechanism; 4. Guide mechanism; 5. Rotary seat; 6. Lifting tube; 7. Limit block; 8. Spring; 9. Base plate; 10. Casters; 11. Support plate; 12. Proximity switch; 13. Trigger; 14. Handle; 15. Electrical control box; 41. Guide module; 411. Guide rail; 412. Slide table; 51. Cam shaft. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0023] Example: like Figure 1 As shown in the figure, this application discloses a vehicle cab lifting device that can replace manual operation to repeatedly lift and press the handle of the lifting pump installed under the cab, thereby improving work efficiency, reducing personnel configuration and shortening the production cycle. Its structure includes: main frame 1, support beam 2, drive mechanism 3, guide mechanism 4, rotating seat 5, lifting tube 6, limit block 7 and spring 8.

[0024] The main frame 1 is the installation foundation of the device, which ensures the rigidity and stability of the entire device. It can be welded from rectangular tubes and has a vertically arranged cuboid structure.

[0025] The supporting beam 2 is arranged inside the main frame 1 and is used as a mobile platform to drive the actuators installed on it to perform vertical lifting and lowering movements.

[0026] The drive mechanism 3 is fixedly installed on the main frame 1, and its output end is connected to the support beam 2 for transmission, which is used to drive the support beam 2 to perform vertical lifting and lowering movements.

[0027] The guide mechanism 4 is fixedly installed inside the main frame 1 and connected to the support beam 2. It is used to guide the lifting and lowering movement of the support beam 2 to ensure that it does not deviate, jam or rotate during the lifting and lowering process.

[0028] The swivel seat 5 is rotatably mounted on the support beam 2 and can rotate freely in the vertical plane to provide angle self-adaptation capability, ensuring that the lifting force can be applied vertically and efficiently to the handle, avoiding the generation of harmful lateral forces.

[0029] One end of the lifting tube 6 is axially movable through the rotating seat 5, and the other end extends from the front side of the main frame 1. A radially protruding limiting member 61 is provided on its outer periphery to transmit the lifting force of the device to the handle. The limiting member 61 can be a welded protrusion, a through pin, or a fastened nut, etc., to limit the pre-compression position of the spring 8.

[0030] The limiting block 7 is fixedly installed at one end of the lifting tube 6 that passes through the rotating seat 5. Its diameter is larger than the diameter of the through hole on the rotating seat 5. It is used to limit the extreme position of the axial movement of the lifting tube 6, thereby preventing it from completely detaching from the rotating seat 5 under the action of the spring 8 or due to its own weight, thus enhancing the safety and reliability of the device.

[0031] Spring 8 is sleeved on lifting tube 6 and constrained between limiting member 61 and rotating seat 5 to ensure that lifting tube 6 can always be in close contact with handle and will not detach from it due to vibration or position change.

[0032] This utility model has the following technical effects: First, the drive mechanism 3 and guide mechanism 4 provide stable and reliable vertical lifting power, thereby replacing manual operation, completely freeing operators from high-intensity repetitive labor, eliminating occupational health risks such as arm muscle strain, and its automated operation speed is constant and fast, significantly shortening the time of a single lifting operation, effectively speeding up the production cycle, improving the efficiency of the overall assembly line, and eliminating the need to set up dedicated personnel at this workstation, thereby optimizing human resources and reducing labor costs; Second, through the cooperation of the rotating seat 5, the axially movable lifting tube 6 and the spring 8, the vertical linear motion provided by the drive mechanism 3 is adaptively converted into an arc motion that conforms to the natural swing trajectory of the lifting handle, thereby ensuring that the lifting force is always applied to the handle efficiently and vertically, and ensuring the smoothness and stability of the lifting operation.

[0033] In some embodiments, such as Figure 1 As shown, the guide mechanism 4 includes: Two guide modules 41 are symmetrically located at both ends of the supporting beam 2.

[0034] The above design constitutes a stable two-point support structure, which can effectively resist the off-center load moment that may be generated during the lifting process, greatly enhance the rigidity and stability of the lifting process, and also share the load, avoiding stress concentration, thereby optimizing the force distribution and improving the load-bearing capacity.

[0035] Based on the above embodiments, such as Figure 1 and Figure 3 As shown, the guide module 41 includes: The guide rail 411 is vertically fixed inside the main frame 1 and can be an optical axis. The slide table 412 is fixedly installed at the end of the supporting beam 2 and slides in cooperation with the guide rail 411.

[0036] The design of the aforementioned guide module 41 provides a high-precision, high-rigidity, and low-friction linear and stable guide for the lifting and lowering movement of the support beam 2, thereby effectively eliminating swaying and eccentric loading.

[0037] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes: The base plate 9 is fixedly installed at the bottom of the main frame 1, which enhances the overall stability and rigidity and provides a flat and solid mounting surface, thereby ensuring installation accuracy. Multiple casters 10 are installed at intervals on the bottom surface of the base plate 9, enabling flexible movement of the device. The casters include swivel wheels and fixed wheels, and have a brake locking function. After the device is moved to the predetermined work position, the casters 10 can be fixed to prevent it from moving during the lifting operation, thus ensuring the safety and stability of the operation.

[0038] The above design provides the device with high mobility and flexibility, making it easy to transport and move, thereby improving the deployment efficiency and applicability of the equipment.

[0039] In some embodiments, such as Figure 1 As shown, the drive mechanism 3 is a reciprocating cylinder. The cylinder body of the reciprocating cylinder is fixedly installed on the base plate 9, and the end of its piston rod is fixedly connected to the bottom surface of the support beam 2. It has the advantages of simple structure, compact layout, low cost, strong power, high reliability and easy control.

[0040] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes: Two support plates 11 are symmetrically fixed on the top surface of the support beam 2 and respectively attached to both sides of the rotating seat 5, thereby providing installation fulcrum and playing the role of axial limiting. The rotating seat 5 has coaxial convex shafts 51 on both sides. The convex shafts 51 are rotatably mounted on the corresponding support plates 11 to form a rotating shaft and smoothly transmit the load to the support plates 11.

[0041] The above design improves structural strength and impact resistance, enhances reliability and load-bearing capacity, prevents swaying and deviation, ensures the accuracy of the lifting action, and facilitates processing, installation, and maintenance.

[0042] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes: Two proximity switches 12 are arranged vertically at intervals and fixedly installed on the main frame 1. They are used to detect the upper and lower limit positions of the support beam 2 and send electrical signals, thereby defining a safe and controllable lifting stroke range. The trigger element 13 is fixedly installed on the support beam 2 and corresponds to the proximity switch 12. It is used to trigger the corresponding proximity switch 12 when the support beam 2 moves to a specific position.

[0043] The above two components, in conjunction with a control system such as a PLC, enable a fully automatic work cycle: Automatic stop at the working position: When the support beam 2 descends to the predetermined height, the trigger 13 fixed on it enters the sensing area of ​​the lower proximity switch 12. The lower proximity switch 12 sends a signal. After the control system receives this signal, it immediately cuts off the air supply, the cylinder stops moving, and the lifting action is completed, which ensures that the lifting height is absolutely consistent each time. Automatic stop at the reset position: When the support beam 2 rises to the predetermined height, the trigger 13 enters the sensing area of ​​the upper proximity switch 12. The upper proximity switch 12 sends a signal. After receiving this signal, the control system immediately cuts off the air supply, and the cylinder stops moving, indicating that the device has been reset.

[0044] Through the above design, in conjunction with the control system, a fully automated cycle of pressurization operation was achieved, which greatly improved work efficiency and automation, and ensured that the height of each pressurization was completely consistent, thereby providing a stable working environment for subsequent assembly operations and guaranteeing product quality.

[0045] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes: Several handles 14 are fixedly installed on the rear side of the main frame 1 to provide force points for manual operation and movement of the entire device, thereby improving the portability, stability and safety of the control equipment.

[0046] For example, there are two handles 14, which are arranged symmetrically on the left and right sides, making it convenient for the operator to control with both hands, thereby improving the portability, stability and comfort of operation.

[0047] The above design provides the operator with a comfortable and reliable grip position, making it easy to pull, push and steer the device.

[0048] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes: The electrical control box 15 is fixedly installed on the rear side of the main frame 1 and is connected to the drive mechanism 3 for controlling the operation of the drive mechanism 3.

[0049] For example, the electrical control box 15 is connected to an AC 220V power supply and contains a switching power supply, intermediate relays, and various control buttons. In case of an emergency, the emergency stop button can be pressed quickly to achieve protection. When the support beam 2 is not at the limit position at both ends, pressing the up or down button can realize the reciprocating motion of the device through the self-locking and automatic reciprocating control circuit of the control circuit.

[0050] The above design integrates all electrical control units into one place, making the equipment interface clear and facilitating rapid deployment and maintenance of the device on the production line.

[0051] The workflow for this application will be further explained as follows: First, the entire device is moved under the cab so that the protruding end of the lifting tube 6 is fitted onto the lifting pump's handle. At this time, the rebound force of the spring 8 will continuously push the limiting member 61, thus ensuring that the lifting tube 6 and the lifting handle remain securely connected and will not disengage due to changes in position. Then, the drive mechanism 3 operates, pushing the support beam 2 to descend smoothly. The descending support beam 2 drives the handle to rotate downwards through the rotating seat 5, the spring 8, and the lifting tube 6, thereby completing the lifting action. After the lifting is completed, the drive mechanism 3 moves in the opposite direction, driving the entire device to rise and reset, waiting for the next work cycle.

[0052] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A vehicle cab lifting device, characterized in that, include: Main framework; Support beams are arranged within the main frame; The drive mechanism is fixedly installed on the main frame, and its output end is connected to the support beam for driving the support beam to perform vertical lifting and lowering movements. A guiding mechanism is fixedly installed within the main frame and connected to the supporting beam, used to guide the lifting and lowering movement of the supporting beam; The rotating seat is rotatably mounted on the supporting crossbeam and can rotate freely in the vertical plane; The lifting tube has one end axially movable through the rotating seat and the other end extends from the front side of the main frame, and its outer periphery is provided with a radially protruding limiting member; A limiting block is fixedly installed at one end of the lifting tube that passes through the rotating seat; A spring is sleeved on the lifting tube and constrained between the limiting member and the rotating seat.

2. The vehicle cab lifting device according to claim 1, characterized in that, The guiding mechanism includes: Two guide modules are symmetrically arranged at both ends of the supporting crossbeam.

3. The vehicle cab lifting device according to claim 2, characterized in that, The guide module includes: The guide rail is vertically and fixedly installed within the main frame; The slide is fixedly installed at the end of the supporting beam and slides in cooperation with the guide rail.

4. The vehicle cab lifting device according to claim 1, characterized in that, include: The base plate is fixedly installed at the bottom of the main frame; Multiple casters are installed at intervals on the bottom surface of the base plate.

5. The vehicle cab lifting device according to claim 4, characterized in that, The driving mechanism is a reciprocating cylinder, the cylinder body of which is fixedly mounted on the base plate, and the end of its piston rod is fixedly connected to the bottom surface of the support beam.

6. The vehicle cab lifting device according to claim 1, characterized in that, include: Two support plates are symmetrically fixedly installed on the top surface of the support beam and respectively attached to both sides of the rotating seat; The rotating seat has coaxial convex shafts on both sides, and the convex shafts are rotatably mounted on the corresponding support plates.

7. The vehicle cab lifting device according to claim 1, characterized in that, include: Two proximity switches are arranged vertically at intervals and are fixedly installed on the main frame; The trigger element is fixedly installed on the support beam and corresponds to the proximity switch.

8. The vehicle cab lifting device according to claim 4, characterized in that, include: Several handles are fixedly installed on the rear side of the main frame.

9. The vehicle cab lifting device according to claim 1, characterized in that, include: An electrical control box is fixedly installed on the rear side of the main frame and is connected to the drive mechanism for controlling the operation of the drive mechanism.

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