Telescopic front end multi-section support device

Abstract

The utility model discloses a telescopic machine front end multi -section support device, include: located telescopic machine front end telescopic arm support, the front end of telescopic arm support is provided with the person platform that can overturn folding to rear side, telescopic machine front end both sides all are equipped with a support unit that can telescopic up and down, support unit installs on the person platform, when the person platform is folding state, support unit is located the inboard of the person platform, support unit includes the telescopic leg support of vertical setting, the hydraulic cylinder of drive link with telescopic leg support and through the support wheel of fixed seat connection in telescopic leg support below. The utility model discloses through multistage support structure and hydraulic locking mechanism, effectively improved telescopic machine front end's stability and reliability, especially suitable for express delivery logistics etc. need frequently telescopic operation's occasion.

Description

Technical Field

[0001] This utility model relates to the field of logistics conveying equipment technology, specifically to a multi-section support device at the front end of a telescopic machine. Background Technology

[0002] In recent years, with the continuous increase in express delivery volume, express delivery companies have been raising their requirements for the stability of equipment operation. Multi-section telescopic conveyors are widely used in cargo loading and unloading. During the extension process, when the platform carries operators, the increased load at the front end causes excessive deflection and insufficient stability of the telescopic conveyor structure, making it difficult to achieve stable and reliable transportation.

[0003] In existing technologies, the front-end support of telescopic conveyors typically lacks an effective support device or has a simple structure, making it unable to adapt to different working heights. When the personnel platform is under load, it is prone to excessive deflection, resulting in insufficient structural stability. Furthermore, the personnel platform occupies a large space when folded, affecting the equipment's compactness. In addition, existing support devices often fail to fully utilize the folding space, leading to a bulky equipment in its non-working state, making transportation and storage inconvenient. Therefore, this invention designs a multi-section front-end support device for telescopic conveyors to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide a multi-section support device for the front end of a telescopic machine.

[0006] To achieve the above and other related objectives, the technical solution provided by this utility model is: a multi-section support device for the front end of a telescopic machine, comprising: a telescopic boom located at the front end of the telescopic machine, wherein the front end of the telescopic boom is provided with a standing platform that can be flipped and folded to the rear. The telescopic machine has a support unit that can extend and retract vertically on both sides of its front end. The support unit is installed on the standing platform. When the standing platform is in a folded state, the support unit is housed in the inner space of the railing of the standing platform. The support unit includes vertically mounted retractable legs, a hydraulic cylinder connected to the retractable legs, and support wheels connected to the bottom of the retractable legs via fixed seats. The support unit provides multi-stage support at the front end, effectively distributing the load on the platform and reducing structural deflection during operation. Integrated into the platform, the support unit fully utilizes the space inside the railings, reducing the folded size of the equipment and improving space utilization. The lowest point of the support unit is higher than the mounting base of the multi-section retractable machine, preventing interference between the support unit and the ground or other components, ensuring the safety and reliability of the equipment operation.

[0007] Furthermore, the retractable leg frame includes a first leg section, a second leg section, and a third leg section, which are sequentially connected from top to bottom and from outside to inside; a first mounting block is fixed to the lower inner end of the first leg section, and a second mounting block is fixed to the lower outer end of the first leg section; a first pulley is fixed to the upper inner end of the second leg section, and a second pulley is provided at the lower outer end of the second leg section; a third mounting block is fixed to the upper outer end of the third leg section; and a fourth mounting block is fixed to the fixed base. The retractable leg bracket is further provided with a first flexible traction member and a second flexible traction member; one end of the first flexible traction member is fixedly connected to the first mounting block, and the other end of the first flexible traction member is connected to the fourth mounting block. The first flexible traction member passes around the first pulley and through the interior of the first and second support legs; one end of the second flexible traction member is connected to the second mounting block, and the other end of the second flexible traction member is fixedly connected to the third mounting block. The second flexible traction member passes around the second pulley. The mounting end of the hydraulic cylinder is fixed to the upper outer side of the first outrigger section, and the movable end of the hydraulic cylinder is fixed to the lower outer side of the second outrigger section. Through a multi-section sleeve structure and a dual flexible traction transmission system, precise synchronous extension and retraction of the outriggers are achieved, with a smooth and impact-free extension and retraction process. The compact structure improves support reliability and adaptability, facilitating on-site installation and maintenance. The multi-section outriggers extend under their own weight, and upon reaching the designated position, the hydraulic system locks them in place via a locking mechanism, ensuring equipment stability and preventing movement due to external forces. Both the first and second pulleys are nylon idler pulleys. Nylon material has self-lubricating properties, reducing frictional resistance and noise, improving transmission efficiency, and lowering maintenance requirements.

[0008] Furthermore, the first flexible traction member is connected to the fourth mounting block via a first screw, and the first screw and the fourth mounting block are connected by a thread, thereby achieving tension adjustment of the first flexible traction member; the second flexible traction member is connected to the second mounting block via a second screw, and the second screw and the second mounting block are connected by a thread, thereby achieving tension adjustment of the second flexible traction member. This design facilitates adjustment of the tension of the flexible traction member, ensures transmission reliability and accuracy, and reduces wear and malfunctions.

[0009] Furthermore, the first and second flexible traction components are chains, wire ropes, or fiber ropes. This solution offers a variety of material options to adapt to different working conditions, enhancing versatility. For example, wire ropes are suitable for heavy-duty applications and have high breaking strength; fiber ropes are lightweight and suitable for frequent extension and retraction applications, reducing drive energy consumption.

[0010] Furthermore, the standing platform includes a fixed frame vertically mounted on the telescopic boom, a support plate horizontally mounted at the lower end of the fixed frame, and railings on both sides of the support plate; the support plate is rotatably connected to the fixed frame. This standing platform adopts a hinged flip structure, enabling rapid folding, effectively saving space, and the folding operation is simple and quick, thereby improving the portability and storage efficiency of the equipment.

[0011] Furthermore, the railing is provided with a first insertion socket, and the fixing frame is provided with a first pin corresponding to the first insertion socket; when the standing platform is in the open state, the first pin is inserted into the first insertion socket. This provides a reliable mechanical interlock, locking the standing platform in the open state, effectively preventing accidental closure of the platform and ensuring the safety of the operator.

[0012] Furthermore, the support plate is provided with a second insertion socket, and the fixing frame is provided with a second pin corresponding to the second insertion socket; when the standing platform is in the folded state, the second pin is inserted into the second insertion socket. This locks the standing platform in the folded state, preventing accidental unfolding and improving transportation and storage safety.

[0013] Furthermore, the hydraulic cylinder is connected to a hydraulic system, which includes an oil tank and a control valve assembly mounted on the platform. In a specific embodiment, the hydraulic system may also include a hydraulic pump. In this design, the multi-section outriggers can extend under their own weight. When they reach a designated position, the hydraulic system controls the hydraulic cylinder via the control valve assembly to lock them, ensuring the equipment is stable and will not move due to external forces. The integrated hydraulic system achieves precise control and reliable locking of the outriggers, with a fast response time, ensuring stable equipment operation.

[0014] Furthermore, the telescopic boom includes several boom sections that are sequentially connected from back to front and from outside to inside. This allows for boom length adjustment to adapt to different working distance requirements and improves equipment applicability.

[0015] Furthermore, the first, second, and third outrigger sections are all made of seamless square tubing. High-strength materials are used to ensure a stable outrigger structure, high load-bearing capacity, and long service life.

[0016] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: 1. This utility model provides additional support when the telescopic machine extends by setting a retractable support unit, which effectively reduces structural deflection, improves stability, and ensures reliable conveying.

[0017] 2. The support unit of this utility model is installed on the standing platform. When the standing platform is folded, the support unit is located inside the railing, making full use of the folding space without occupying extra space, maintaining the compactness of the equipment, and facilitating transportation and storage.

[0018] 3. The telescopic leg frame of this utility model adopts a multi-section support leg and flexible traction component design. The extension and retraction are controlled by a hydraulic cylinder to achieve smooth extension and reliable locking, adapting to different height requirements and improving adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the multi-section support device at the front end of the telescopic machine according to this utility model; Figure 2 This is a schematic diagram of the standing platform, support unit, and related structures of this utility model; Figure 3 This is a schematic diagram of the standing platform structure of this utility model; Figure 4 This is an enlarged view of part A of this utility model; Figure 5 This is a schematic diagram of the support unit structure of this utility model; Figure 6 This is a cross-sectional schematic diagram of the support unit of this utility model; In the above attached figures, 1. Telescopic boom; 2. Standing platform; 21. Fixing frame; 22. Support plate; 23. Handrail; 24. First insertion socket; 25. First pin; 26. Second insertion socket; 27. Second pin; 3. Support unit; 31. Telescopic leg; 311. First outrigger section; 312. Second outrigger section; 313. Third outrigger section; 314. First mounting block; 315. Second mounting block; 316. First pulley; 317. Second pulley; 318. Third mounting block; 319. Fourth mounting block; 32. Hydraulic cylinder; 320. First flexible traction component; 321. Second flexible traction component; 322. First screw; 323. Second screw; 33. Support wheel; 34. Fixed base; 4. Hydraulic system; 41. Oil tank; 43. Control valve assembly. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0025] Example: See appendix Figure 1 and attached Figure 2 As shown, this embodiment provides a multi-section support device for the front end of a telescopic machine, including a telescopic boom 1, a standing platform 2, and a support unit 3.

[0026] The telescopic boom 1 is located at the front end of the telescopic machine and consists of multiple linked arms, specifically including a rear support arm, several intermediate support arms, and a front support arm that are linked sequentially from back to front and from outside to inside. The support arms are connected by slide rails and sliders to achieve smooth telescopic movement. The rear support arm is the base arm, fixed to the main structure of the telescopic machine, while the front support arm is the end arm, connected to the personnel platform 2 at its front end.

[0027] The standing platform 2 is connected to the front end of the end arm via a hinge mechanism and can be flipped and folded backward. The standing platform 2 includes a fixed frame 21, a support plate 22, and railings 23. The fixed frame 21 is welded to the end arm, and the support plate 22 is connected to the fixed frame 21 via a pivot, enabling a 0-90 degree flipping motion. The railings 23 are vertically arranged on both sides of the support plate 22, with a height conforming to ergonomic requirements.

[0028] See appendix Figure 3 and attached Figure 4 As shown, the standing platform 2 is equipped with two sets of locking mechanisms: The first locking mechanism includes a first insertion socket 24 mounted on the railing 23 and a first pin 25 mounted on the fixing frame 21. When the standing platform 2 is extended to the horizontal working position, the first pin 25 automatically inserts into the first insertion socket 24 under the action of a spring, achieving reliable locking.

[0029] The second locking mechanism includes second socket seats 26 located on both sides of the support plate 22 and second pins 27 on the fixing frame 21. When the standing platform 2 is folded to the vertical storage position, the second pins 27 are manually inserted into the second socket seats 26 to ensure safe transportation.

[0030] See appendix Figure 1 and attached Figure 2 As shown, the support units 3 are symmetrically arranged on both sides of the standing platform 2. Each support unit 3 includes a retractable leg frame 31, a hydraulic cylinder 32, and a support wheel 33. The support units 3 are fixed to the fixing frame 21 of the standing platform 2 by bolts. When the standing platform 2 is folded, the support units 3 are located in the inner space of the railing 23, without adding extra volume.

[0031] See appendix Figure 5 and attached Figure 6 As shown, the retractable leg frame 31 adopts a three-stage sleeve structure, including a first leg section 311, a second leg section 312, and a third leg section 313. Each leg section is made of high-strength seamless square tubing, possessing excellent bending strength and wear resistance.

[0032] The specific transmission structure of the telescopic leg support 31: See appendix Figure 6 As shown, a first mounting block 314 is welded to the lower inner end of the first outrigger 311, and a second mounting block 315 is welded to the lower outer end. A first pulley 316 is mounted on the upper inner end of the second outrigger 312, and a second pulley 317 is provided on the lower outer end. A third mounting block 318 is welded to the upper outer end of the third outrigger 313. A fourth mounting block 319 is welded to the fixed base 34.

[0033] The first flexible traction member 320 is made of high-strength steel wire rope. One end is fixed to the first mounting block 314, and the other end passes through the first pulley 316 and then through the inside of the outrigger, and is connected to the fourth mounting block 319 through the first screw 322. The first screw 322 and the fourth mounting block 319 are threaded together, and the tension of the first flexible traction member 320 can be adjusted by rotation.

[0034] The second flexible traction member 321 also uses a high-strength steel wire rope. One end is connected to the second mounting block 315 via the second screw 323, and the other end is fixed to the third mounting block 318 after passing over the second pulley 317. The second screw 323 and the second mounting block 315 are threaded together to achieve tension adjustment.

[0035] The cylinder body of the hydraulic cylinder 32 is connected to the upper outer side of the first outrigger 311 via a pin, and the piston rod is connected to the lower outer side of the second outrigger 312. The hydraulic cylinder 32 is a double-acting hydraulic cylinder, which can realize bidirectional motion control.

[0036] For the working process of the extendable leg support, please refer to the appendix. Figure 5 and attached Figure 6 As shown: When the support needs to be extended, the hydraulic system 4 controls the hydraulic cylinder 32 to retract, and the piston rod drives the second outrigger 312 to move downward relative to the third outrigger 313. Through the transmission of the second flexible traction member 321, the first outrigger 311 is driven to extend downward relative to the second outrigger 312. Under the combined action of its own weight and hydraulic force, each outrigger extends smoothly until the support wheel 33 contacts the ground.

[0037] When retraction is required, the hydraulic cylinder 32 extends, pushing the second outrigger 312 upward. Through the coordinated transmission of the first flexible traction member 320 and the second flexible traction member 321, each outrigger retracts step by step.

[0038] See appendix Figure 2 As shown, the hydraulic system 4 includes an oil tank 41, a hydraulic pump, a control valve group 43, and a hydraulic cylinder 32. The oil tank 41 is installed on the personnel platform 2. The hydraulic pump is driven by a motor. The control valve group 43 includes a directional control valve, a pressure control valve, and a locking valve. When the outrigger reaches the designated position, the locking valve automatically closes, achieving hydraulic locking and ensuring support stability.

[0039] The support wheel 33 is made of polyurethane and is mounted on the fixed seat 34 via bearings, providing excellent load-bearing capacity and wear resistance. The lowest point of the support unit 3 is always higher than the mounting base plate of the telescopic machine to avoid interference with other components of the equipment.

[0040] Work process: When preparing the equipment, first loosen the second pin 27, unfold the standing platform 2 to a horizontal position, and the first pin 25 will automatically lock; start the hydraulic system 4 to control the support unit 3 to extend downward until the support wheel 33 contacts the ground; the hydraulic system will automatically lock to form a stable support structure; the telescopic machine will start working and maintain stable operation with the assistance of the support unit 3; after the work is completed, retract the support unit 3, fold the standing platform 2, and complete the equipment storage.

[0041] Example 2: This embodiment is an improvement based on Embodiment 1, and its specific method is as follows: The connecting structure between each arm section is replaced by a rolling structure (rail and roller) instead of the sliding structure (slide rail and slider) in Embodiment 1 to achieve smooth telescopic movement. Furthermore, the hydraulic system 4 does not include the hydraulic pump found in Embodiment 1.

[0042] Working principle of the extendable leg support: Extension: The piston rod and hydraulic cylinder in hydraulic system 4 have a low coefficient of friction, and each outrigger extends smoothly under its own weight. The second outrigger 312 and the third outrigger 313 move synchronously through the first flexible traction member 320 and the second flexible traction member 321 until the support wheel 33 contacts the ground. The hydraulic system then automatically locks, forming a stable support.

[0043] Retraction: The control valve group opens, the support wheel 33 contacts the ground, and retracts as it contacts the ground.

[0044] This invention effectively solves the structural stability problem at the front end of a telescopic conveyor caused by load through an innovative multi-section support device design. The device features telescopic support units on both sides of the standing platform, providing stable multi-level support during operation, significantly reducing structural deflection and improving equipment operational stability. The support units adopt a modular design, integrating with the standing platform and cleverly utilizing internal space, keeping the equipment compact when not in operation and greatly improving space utilization. The hydraulic system and flexible traction mechanism work together to achieve smooth extension and reliable locking of the outriggers, ensuring excellent rigidity of the support system. The device employs a lightweight design, effectively reducing overall weight, while being equipped with multiple mechanical locking mechanisms, significantly enhancing operational safety. The overall structure of this device ensures load-bearing capacity while also considering service life and operational efficiency, achieving a harmonious balance of stability, safety, and economy, providing a reliable support solution for logistics conveying equipment.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A multi-section support device for the front end of a telescopic machine, characterized in that, include: The telescopic boom (1) is located at the front end of the telescopic machine. The front end of the telescopic boom (1) is provided with a standing platform (2) that can be flipped and folded to the rear. The telescopic machine has a support unit (3) that can extend and retract vertically on both sides of its front end. The support unit (3) is located on the standing platform (2). When the standing platform (2) is in a folded state, the support unit (3) is located on the inside of the standing platform (2). The support unit (3) includes a vertically arranged telescopic leg (31), a hydraulic cylinder (32) that is connected to the telescopic leg (31) in a transmission, and a support wheel (33) that is connected to the telescopic leg (31) below the telescopic leg (31) via a fixed seat (34).

2. The multi-section support device at the front end of a telescopic machine according to claim 1, characterized in that: The retractable leg frame (31) includes a first leg (311), a second leg (312), and a third leg (313) that are sequentially connected from top to bottom and from outside to inside. A first mounting block (314) is fixed to the lower inner end of the first leg section (311), and a second mounting block (315) is fixed to the lower outer end of the first leg section (311); a first pulley (316) is fixed to the upper inner end of the second leg section (312), and a second pulley (317) is provided at the lower outer end of the second leg section (312); a third mounting block (318) is fixed to the upper outer end of the third leg section (313); and a fourth mounting block (319) is fixed on the fixed base (34). The retractable leg frame (31) is also provided with a first flexible traction member (320) and a second flexible traction member (321). One end of the first flexible traction member (320) is fixedly connected to the first mounting block (314), and the other end of the first flexible traction member (320) is connected to the fourth mounting block (319). The first flexible traction member (320) passes around the first pulley (316) and through the interior of the first support leg (311) and the second support leg (312). One end of the second flexible traction member (321) is connected to the second mounting block (315), and the other end of the second flexible traction member (321) is fixedly connected to the third mounting block (318). The second flexible traction member (321) is arranged to bypass the second pulley (317). The mounting end of the hydraulic cylinder (32) is fixed on the upper outer side of the first outrigger (311), and the movable end of the hydraulic cylinder (32) is fixed on the lower outer side of the second outrigger (312).

3. The multi-section support device at the front end of a telescopic machine according to claim 2, characterized in that: The first flexible traction member (320) is connected to the fourth mounting block (319) via a first screw (322), and the first screw (322) and the fourth mounting block (319) are connected by threads; the second flexible traction member (321) is connected to the second mounting block (315) via a second screw (323), and the second screw (323) and the second mounting block (315) are connected by threads.

4. The multi-section support device at the front end of a telescopic machine according to claim 2, characterized in that: The first flexible traction member (320) and the second flexible traction member (321) are chains, wire ropes or fiber ropes.

5. The multi-section support device for the front end of a telescopic machine according to claim 1, characterized in that: The standing platform (2) includes a fixed frame (21) vertically mounted on the telescopic boom (1), a support plate (22) horizontally mounted at the lower end of the fixed frame (21), and railings (23) mounted on both sides of the support plate (22); the support plate (22) is rotatably connected to the fixed frame (21).

6. The multi-section support device for the front end of a telescopic machine according to claim 5, characterized in that: The railing (23) is provided with a first socket (24), and the fixing frame (21) is provided with a first pin (25) corresponding to the first socket (24); when the standing platform (2) is in the open state, the first pin (25) is inserted into the first socket (24).

7. The multi-section support device at the front end of a telescopic machine according to claim 5, characterized in that: The support plate (22) is provided with a second socket (26), and the fixing frame (21) is provided with a second pin (27) corresponding to the second socket (26); when the standing platform (2) is in a folded state, the second pin (27) is inserted into the second socket.

8. The multi-section support device at the front end of a telescopic machine according to claim 1, characterized in that: The hydraulic cylinder (32) is connected to the hydraulic system (4), which includes an oil tank (41) and a control valve group (43) installed on the manned platform (2).

9. A multi-section support device for the front end of a telescopic machine according to claim 1, characterized in that: The telescopic boom (1) includes several boom sections that are sequentially connected from back to front and from outside to inside.

10. A multi-section support device for the front end of a telescopic machine according to claim 2, characterized in that: The first leg (311), the second leg (312), and the third leg (313) are all seamless square tubes.

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