Crane chassis structure with supporting legs and vehicle body capable of stretching out and drawing back in combined mode

Abstract

The utility model belongs to the technical field of crane chassis, and particularly relates to a crane chassis structure with supporting legs and a vehicle body capable of stretching out and drawing back jointly, which comprises the vehicle body, a chassis is connected to one side of the vehicle body, the supporting legs are installed at the bottom of the chassis, and two supports are symmetrically welded on the surface of one side, close to the end of the vehicle body, of the chassis. A reinforcing rod is welded between the two brackets; according to the utility model, after the cargo boom finishes working, the cargo boom can be retracted to the supporting plate, the electric telescopic rods on the two sides are started at the moment, the telescopic ends of the electric telescopic rods move towards one side, so that the movable plate is pushed to move, the movable plate drives the buffer block to move when moving, and the buffer block moves continuously, so that the cargo boom can be lifted up and down. The two buffer blocks can be gradually extruded on the outer wall of the cargo boom, and finally, one end of the cargo boom can be fixed through the structure, so that the stability of the cargo boom after being recycled is improved, and large-amplitude shaking of the cargo boom caused when a vehicle body runs can be reduced when the cargo boom is used.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane chassis, and in particular relates to a crane chassis structure with a supporting leg and a vehicle body jointly retractable. Background Art

[0002] Crane chassis are widely used in a variety of industries, including construction sites, docks, coal mines, power generation, and petroleum. In these industries, cranes are frequently used for lifting operations, and the stability and reliability of the chassis are crucial to ensuring operational safety and improving work efficiency. The crane chassis is an essential component of the crane, carrying and supporting the overall structure of the crane and the weight of the hoisted objects.

[0003] In crane design, the boom, the core component for performing lifting operations, is typically retracted and mounted on a specialized support structure on the chassis after completing its mission. However, many current crane designs utilize a relatively simple method for securing the retracted boom, often simply placing it directly on the chassis' support structure, lacking sufficient stability and restraint.

[0004] This design may meet basic support requirements when the crane is stationary, but once the vehicle begins to move, problems become apparent. Because the connection between the boom and chassis is not tight and secure enough, the boom easily sways with the vehicle's movement. This sway not only affects the crane's stability and reduces safety during operation, but also poses a serious threat to the surrounding environment.

[0005] For example, on a busy construction site or on a narrow city street, the swaying boom of a crane could collide with surrounding buildings, power lines, or other facilities, causing damage or even a safety hazard. Furthermore, the swaying boom could cause objects on the boom to slide, posing a direct threat to pedestrians and vehicles below.

[0006] Therefore, to improve the overall performance and safety of the crane, the design team needed to re-examine the way the boom was secured after retracting. Utility Model Content

[0007] The purpose of this utility model is to provide a crane chassis structure with a jointly retractable outrigger and chassis. This structure aims to address the problem that becomes apparent once the crane begins to move. Due to a loose and insecure connection between the boom and chassis, the boom easily wobbles with the movement of the crane. This wobble not only affects the crane's stability and reduces safety during operation, but also poses a significant risk to the surrounding environment.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a crane chassis structure with a telescopic support leg and a vehicle body, comprising a vehicle body, a chassis connected to one side of the vehicle body, a support leg mounted on the bottom of the chassis, two brackets symmetrically welded to a surface of one side of the chassis near the end of the vehicle body, and a reinforcement rod welded between the two brackets;

[0009] A support plate is welded to the top of the two reinforcement rods, and a cross bar is welded to both sides of the support plate. An electric lifting rod is provided at the upper end of the cross bar, and the telescopic end of the electric lifting rod is movably connected to the outer wall of one side of the movable plate.

[0010] In order to reduce the instantaneous pressure on the supporting mechanism when the boom is retracted, as a crane chassis structure with jointly retractable legs and body in the utility model, preferably, the bottom of the reinforcement rod is fixedly connected with a strong spring, the top of the strong spring is movably sleeved inside the bottom sleeve, and the bottom of the bottom sleeve is welded to the surface of the chassis.

[0011] In order to effectively achieve a clamping effect on the lifting arm in between when the two movable plates are close to each other, as a crane chassis structure with jointly retractable legs and body, the utility model is preferably provided with a movable plate movably mounted on the surface of the support plate, and a buffer block is bonded to the side of the movable plate away from the electric lifting and retracting rod, the buffer block is made of hard rubber, and one side of the buffer block is an arc-shaped structure.

[0012] In order to enable the movable plate to move along a fixed track of the support plate, as a crane chassis structure with jointly retractable legs and body of the utility model, preferably, a slider is fixedly installed on the bottom of the movable plate, and a side block is fixedly installed on both sides of the slider, and the slider and the side block are movably installed inside the slide groove, and the slide groove is opened on the surface of the support plate, and the horizontal length between the inner walls of the open ends of the slide groove is less than the maximum horizontal vertical length between the two side blocks.

[0013] In order to control the movement of the corresponding movable plate toward the center end of the support plate, as a crane chassis structure with jointly retractable legs and body of the utility model, preferably, a ring is fixedly sleeved on the outer wall of the cross bar, a vertical plate is welded on the surface of the ring, and an electric lifting and retraction rod is welded on the top of the vertical plate, the slide groove and the cross bar are both located on the horizontal center line of the support plate, and the vertical plate is located on the horizontal center line of the cross bar.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the boom is done, it will be retracted to the support plate. At this time, the electric lifting and retraction rods on both sides are started, and the telescopic ends of the electric lifting and retraction rods move to one side, which will push the moving plate to move. When the moving plate moves, it will drive the buffer block to move. As it moves continuously, the two buffer blocks will gradually be squeezed on the outer wall of the boom. Finally, through the above structure, one end of the boom can be fixed, thereby improving the stability of the boom after it is retracted, thereby reducing the significant shaking of the boom caused by the vehicle body when in use;

[0016] When the boom falls on the pallet, the instantaneous pressure will cause the bracket and chassis to produce a certain amount of slight deformation downward. At this time, the strong spring will offset part of the downward impact force under the action of its own elasticity, thereby reducing the deformation of the bracket and chassis, thereby improving the safety strength of the bracket and chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a left-view structural diagram provided for an embodiment of the present application.

[0019] Figure 2 This is a schematic diagram of the right-side structure provided in an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of the side cross-sectional structure of the support plate provided in an embodiment of the present application.

[0021] Figure 4 Schematic diagram of the crossbar installation structure provided in an embodiment of the present application.

[0022] Figure 5 This is a schematic diagram of the slider installation structure provided in an embodiment of the present application.

[0023] In the figure: 1. Vehicle body; 2. Chassis; 3. Outrigger; 4. Bracket; 5. Reinforcement rod; 51. Power spring; 52. Bottom sleeve; 6. Support plate; 61. Moving plate; 62. Buffer block; 63. Slide groove; 64. Slider; 65. Side block; 7. Cross bar; 71. Ring; 72. Vertical plate; 73. Electric lifting and retracting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The utility model provides the following technical solutions: a crane chassis structure with a telescopic support leg and a vehicle body, comprising a vehicle body 1, a chassis 2 connected to one side of the vehicle body 1, and a mounting seat for mounting a lifting mechanism on the chassis 2 (see the mounting seat for details). Figure 1 or Figure 2 ), wherein the crane structure is not shown in the drawings, and for details, please refer to the existing crane, the mounting legs 3 are at the bottom of the chassis 2, two brackets 4 are symmetrically welded on the surface of one side of the chassis 2 close to the end of the vehicle body 1, and a reinforcement rod 5 is welded between the two brackets 4;

[0026] The vehicle body 1 in this technical solution is equipped with a complete crane hydraulic system, powered by the crane's engine. The engine drives the hydraulic pump to rotate, converting mechanical energy into hydraulic energy, providing power for the extension and retraction of the outriggers 3 and vehicle body 1. As this technology is mature in the field, it will not be elaborated in this technical solution.

[0027] The two brackets 4 and the reinforcement rod 5 constitute a supporting mechanism, and after the boom is retracted, the supporting mechanism can support and reinforce the suspended part of the boom.

[0028] A support plate 6 is welded to the top of the two reinforcement rods 5, and a cross bar 7 is welded to each side of the support plate 6. An electric lifting and retracting rod 73 is provided at the upper end of the cross bar 7, and the telescopic end of the electric lifting and retracting rod 73 is movably connected to the outer wall of one side of the movable plate 61;

[0029] The electric lifting and retracting rod 73 is connected to the power supply on the vehicle body 1 when in use. At the same time, a control switch for controlling the opening and closing of the electric lifting and retracting rod 73 is also provided in the circuit of the electric lifting and retracting rod 73 .

[0030] Preferably, a strong spring 51 is fixedly connected to the bottom of the reinforcing rod 5 , the top of the strong spring 51 is movably sleeved inside the bottom sleeve 52 , and the bottom of the bottom sleeve 52 is welded to the surface of the chassis 2 .

[0031] During use, when the boom lands firmly on the support plate 6, the instantaneous pressure generated by its own weight causes the bracket 4 and chassis 2 to deform slightly downward. To mitigate the potential impact of this deformation on the vehicle structure, the design team cleverly introduced a key component: strong springs 51. These strong springs 51, with their excellent elasticity and resilience, quickly take effect when subjected to downward impact, partially offsetting the impact and effectively reducing the deformation of the bracket 4 and chassis 2.

[0032] Preferably, a movable plate 61 is movably mounted on the surface of the support plate 6. A buffer block 62 is bonded to the side of the movable plate 61 away from the electric lifting and retraction rod 73. The buffer block 62 is made of hard rubber and has an arc-shaped structure on one side. A slider 64 is fixedly mounted on the bottom of the movable plate 61. A side block 65 is fixedly mounted on each side of the slider 64. The slider 64 and the side blocks 65 are movably mounted inside a chute 63. The chute 63 is provided on the surface of the support plate 6. The horizontal length between the inner walls of the open end of the chute 63 is less than the maximum horizontal vertical length between the two side blocks 65.

[0033] When the electric lifting and retracting rod 73 is working, it will push the corresponding movable plate 61 to move. When the movable plate 61 moves, it will drive the buffer block 62 to move. When the buffer block 62 moves, it will move closer to the center end of the support plate 6. At the same time, when the movable plate 61 moves, it will also synchronously drive the bottom slider 64 and the side block 65 to move inside the slide groove 63, so that the movable plate 61 can move on the surface of the support plate 6 along a fixed track.

[0034] In actual use, after the boom completes its work, it retracts onto the support plate 6 according to a pre-set operating procedure. To further enhance the stability of the boom in this retracted state, the system activates the electric telescopic rods 73 mounted on both sides. Upon receiving the activation signal, the telescopic ends of the electric telescopic rods 73 quickly and smoothly move to one side, pushing the movable plate 61 along a predetermined trajectory.

[0035] As the movable plate 61 moves steadily, the buffer block 62 closely connected to it will also be displaced. These two buffer blocks 62 are made of highly elastic and wear-resistant materials to ensure that they can maintain their excellent buffering performance during long-term use. As they continue to approach the outer wall of the boom and eventually fit tightly, the two buffer blocks 62 will gradually apply a uniform and stable pressure to one end of the boom, thereby effectively fixing the boom. This design not only improves the stability of the boom after recovery, but also significantly reduces the large shaking of the boom caused by uneven roads or acceleration, deceleration and other operations during the driving of the vehicle body 1, thereby improving the safety and reliability of the entire operation process.

[0036] This design not only protects the integrity of the vehicle structure but also significantly enhances the safety strength of the bracket 4 and chassis 2, allowing the entire lifting system to demonstrate greater stability and durability in a variety of complex working conditions. In summary, this series of carefully designed mechanical structures and components not only ensures the stability of the crane arm after retraction, but also greatly improves the safety and reliability of the entire operating system.

[0037] Preferably: a ring 71 is fixedly sleeved on the outer wall of the cross bar 7, a vertical plate 72 is welded to the surface of the ring 71, and an electric lifting and retracting rod 73 is welded to the top of the vertical plate 72. The slide 63 and the cross bar 7 are both located at the horizontal center line of the support plate 6, and the vertical plate 72 is located at the horizontal center line of the cross bar 7.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A crane chassis structure with a supporting leg and a vehicle body that are jointly retractable, comprising a vehicle body (1), a chassis (2) connected to one side of the vehicle body (1), and supporting legs (3) mounted on the bottom of the chassis (2), characterized in that: Two brackets (4) are symmetrically welded to a surface of one side of the chassis (2) close to the end of the vehicle body (1), and a reinforcement rod (5) is welded between the two brackets (4); A support plate (6) is welded to the top of the two reinforcement rods (5), and a cross bar (7) is welded to both sides of the support plate (6). An electric lifting and retracting rod (73) is provided at the upper end of the cross bar (7), and the telescopic end of the electric lifting and retracting rod (73) is movably connected to the outer wall of one side of the movable plate (61).

2. The crane chassis structure with jointly retractable legs and body according to claim 1, characterized in that: The bottom of the reinforcing rod (5) is fixedly connected to a strong spring (51), the top of the strong spring (51) is movably sleeved inside the bottom sleeve (52), and the bottom of the bottom sleeve (52) is welded to the surface of the chassis (2).

3. The crane chassis structure with jointly retractable legs and body according to claim 1, characterized in that: A movable plate (61) is movably mounted on the surface of the support plate (6), and a buffer block (62) is bonded to the side of the movable plate (61) away from the electric lifting and retracting rod (73). The buffer block (62) is made of hard rubber, and one side of the buffer block (62) is an arc-shaped structure.

4. A crane chassis structure with jointly retractable legs and body according to claim 1 or 3, characterized in that: A slider (64) is fixedly mounted on the bottom of the movable plate (61), and a side block (65) is fixedly mounted on both sides of the slider (64). The slider (64) and the side block (65) are movably mounted inside the slide groove (63).

5. The crane chassis structure with jointly retractable legs and body according to claim 4, characterized in that: The chute (63) is opened on the surface of the support plate (6), and the transverse length between the inner walls of the open ends of the chute (63) is less than the maximum transverse vertical length between the two side blocks (65).

6. The crane chassis structure with jointly retractable legs and body according to claim 1, characterized in that: A collar (71) is fixedly sleeved on the outer wall of the crossbar (7), a vertical plate (72) is welded to the surface of the collar (71), and an electric lifting and retracting rod (73) is welded to the top of the vertical plate (72).

7. The crane chassis structure with jointly retractable legs and body according to claim 4, characterized in that: The chute (63) and the crossbar (7) are both located on the transverse midline of the support plate (6), and the vertical plate (72) is located on the transverse midline of the crossbar (7).

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