A mobile telescoping lift platform

Abstract

The utility model discloses a mobile telescopic lifting work platform belongs to lifting platform technical field, the platform includes mobile car, workstation and telescopic lifting mechanism, telescopic lifting mechanism includes fixed third telescopic link, the second telescopic link of setting in and the first telescopic link of setting in the second telescopic link, motor drive screw rod rotates, and the screw rod thread connection second telescopic link, the first gear and second gear are rotatably installed on the second telescopic link, and the chain passes through the gear, and one end is fixed in the third telescopic link inner wall through the first fixed part, and the other end is fixed in the first telescopic link lower end through the second fixed part, the workstation includes the telescopic table of sliding connection, be provided with the positioning mechanism on the telescopic table, and the positioning mechanism includes the positioning pin for locking, rotary rod, footboard and pull plate, the utility model discloses compact structure has realized the stable efficient speed ratio lift, and the locking operation of telescopic table is simple and convenient, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a mobile telescopic lifting work platform. Background Technology

[0002] Mobile lifting work platforms are widely used in high-altitude operations such as construction, equipment maintenance, and warehousing and logistics. To meet the needs of different working heights and facilitate compact storage and transportation, existing technologies often employ telescopic lifting structures.

[0003] Currently, many telescopic platforms use multi-stage hydraulic cylinders or pure chain drive systems to achieve lifting.

[0004] However, hydraulic systems are prone to leakage and are susceptible to decreased stability due to low temperatures. Pure chain drive systems, especially in multi-stage telescopic operations, often have complex structures, generate significant noise, and are prone to poor synchronization or transmission vibration between different telescopic rods. This results in low overall lifting efficiency, poor platform stability, and compromised operational safety.

[0005] Therefore, this utility model proposes a mobile telescopic lifting work platform to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a mobile telescopic lifting work platform, which aims to improve the technical problems existing in the prior art, such as low lifting transmission efficiency, poor stability, inconvenient operation for expanding the work platform area, and unreliable locking.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mobile telescopic lifting work platform, comprising: a mobile vehicle and a worktable; and a telescopic lifting mechanism connecting the mobile vehicle and the worktable.

[0008] The telescopic lifting mechanism includes a third telescopic rod fixedly connected to the mobile vehicle, a second telescopic rod slidably sleeved within the third telescopic rod, a motor installed inside the mobile vehicle, the motor driving a lead screw to rotate, the lead screw being threadedly connected to the second telescopic rod, a first telescopic rod slidably sleeved within the second telescopic rod, the upper end of the first telescopic rod being fixedly connected to the worktable, a first gear and a second gear being rotatably mounted on the second telescopic rod, a chain passing over the first gear and the second gear, one end of the chain being fixed to the inner wall of the third telescopic rod by a first fixing member, and the other end of the chain being fixed to the lower end of the first telescopic rod by a second fixing member.

[0009] Preferably, the workbench includes a telescopic platform with a sliding connection; the mobile telescopic lifting work platform is provided with a positioning mechanism, the positioning mechanism including: a positioning pin, which is vertically slidably installed on the telescopic platform and used to insert into a positioning hole provided on the workbench; a rotating rod, which is rotatably connected to the telescopic platform; a foot pedal, which is connected to one end of the rotating rod; and a pull plate, which is connected to the other end of the rotating rod and connected to the positioning pin.

[0010] Preferably, the mobile telescopic lifting work platform is equipped with a ladder, which is fixedly connected to the side wall of the mobile vehicle.

[0011] Preferably, the first gear is rotatably mounted on both upper sides of the second telescopic rod, and the second gear is rotatably mounted on both lower sides of the second telescopic rod.

[0012] Preferably, the positioning mechanism is provided with a support frame, the support frame is fixed on the telescopic platform, and the rotating rod rotates around the support frame.

[0013] Preferably, the positioning mechanism is provided with a spring, which is disposed between the foot pedal and the telescopic platform.

[0014] Preferably, the spring is a compression spring, and the two ends of the spring abut against the lower surface of the foot pedal and the upper surface of the telescopic platform, respectively.

[0015] Preferably, the positioning mechanism is provided with a guide barrel, the guide barrel is fixed on the telescopic platform, and the positioning pin is slidably disposed in the guide barrel.

[0016] Preferably, the pull plate is fixedly connected to the top of the positioning pin.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting up a speed-multiplying transmission mechanism consisting of a motor-driven lead screw, a lead screw threadedly connected to a second telescopic rod, and a first gear, a second gear, a chain, a first fixing member, and a second fixing member that are symmetrically rotated and installed, and thereby linking the telescopic lifting mechanism of the first telescopic rod and the second telescopic rod, the problems of low lifting transmission efficiency, poor stability, and easy shaking and deflection caused by uneven chain force in the prior art of mobile work platforms are solved. The result is a speed-multiplying lifting technology with compact structure, smooth transmission, balanced force, and high lifting efficiency.

[0018] 2. In this utility model, by setting up a purely mechanical positioning mechanism consisting of a foot pedal, a rotating rod, a pull plate, a positioning pin, and a spring, and by setting up a support frame for the rotating rod and a guide barrel for the positioning pin, the problems of cumbersome and laborious locking and unlocking operations, unreliable locking, and easy deviation and jamming of the positioning pin in the prior art of telescopic worktables are solved. The result is a stable structure, accurate positioning, convenient unlocking with just a step, and automatic reset locking when the foot pedal is released. The operation is simple and highly reliable. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a mobile telescopic lifting work platform proposed in this utility model; Figure 2 This is a schematic diagram of the first telescopic rod section of a mobile telescopic lifting work platform proposed in this utility model. Figure 3 This is a schematic diagram of the second telescopic rod section of a mobile telescopic lifting work platform proposed in this utility model. Figure 4 This is a schematic diagram of the workbench structure of a mobile telescopic lifting work platform proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] Legend: 1. Mobile vehicle; 2. Ladder; 3. Workbench; 4. Telescopic platform; 5. Telescopic lifting mechanism; 501. First telescopic rod; 502. Second telescopic rod; 503. Third telescopic rod; 504. First gear; 505. Second gear; 506. Chain; 507. First fixing component; 508. Second fixing component; 509. Motor; 5010. Lead screw; 6. Positioning mechanism; 601. Foot pedal; 602. Rotating rod; 603. Pull plate; 604. Positioning pin; 605. Support frame; 606. Guide barrel; 607. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1 to 5This utility model provides a mobile telescopic lifting work platform, which aims to solve the technical problems existing in the prior art, such as low lifting transmission efficiency, poor stability, inconvenient operation for expanding the work platform area, and unreliable locking.

[0023] This mobile telescopic lifting work platform includes a mobile vehicle 1 serving as a mounting base and a work platform 3 mounted on top of the mobile vehicle 1. A ladder 2 is fixedly connected to the side wall of the mobile vehicle 1 for workers to safely ascend the work platform 3. A telescopic lifting mechanism 5 connects the mobile vehicle 1 and the work platform 3, used to drive the work platform 3 to adjust its vertical height. The work platform 3 includes a telescopic platform 4 that is slidably connected, and a positioning mechanism 6 is provided on the telescopic platform 4 for locking the telescopic platform 4 in the horizontal direction. The telescopic lifting mechanism 5, as the core lifting component, includes a third telescopic rod 503 fixedly connected to the moving vehicle 1. The third telescopic rod 503 serves as the outermost fixed sleeve. A second telescopic rod 502 is slidably fitted inside the third telescopic rod 503. A motor 509 is installed inside the moving vehicle 1. The motor 509 drives a vertically arranged lead screw 5010 to rotate. The lead screw 5010 is threadedly connected to the second telescopic rod 502, thereby driving the second telescopic rod 502 to slide up and down along the inner wall of the third telescopic rod 503 through the rotation of the motor 509. A first telescopic rod 501 is slidably fitted inside the second telescopic rod 502. The upper end of the first telescopic rod 501 is fixedly connected to the bottom surface of the worktable 3. To achieve efficient and double-speed lifting, the telescopic lifting mechanism 5 is also equipped with a linkage transmission structure. Specifically, a first gear 504 is rotatably mounted on both sides above the second telescopic rod 502, and a second gear 505 is rotatably mounted on both sides below the second telescopic rod 502. A chain 506 passes around the first gear 504 and the second gear 505 on the same side to form a transmission circuit. One end of the chain 506 is fixed to the inner wall of the stationary third telescopic rod 503 by a first fixing member 507, and the other end of the chain 506 is fixed to the lower end of the first telescopic rod 501 by a second fixing member 508. This structure allows the movement of the second telescopic rod 502 to be transmitted to the first telescopic rod 501 at double speed, achieving smooth and efficient lifting action.

[0024] The positioning mechanism 6 is mounted on the telescopic platform 4. The positioning mechanism 6 is equipped with a support frame 605 fixed on the telescopic platform 4. The rotating rod 602 is rotatably connected to the support frame 605. The foot pedal 601 is fixedly connected to the end of the rotating rod 602 away from the support frame 605. The positioning mechanism 6 is equipped with a spring 607, which is located between the foot pedal 601 and the telescopic platform 4. Specifically, the spring 607 is a compression spring, and its two ends abut against the lower surface of the foot pedal 601 and the upper surface of the telescopic platform 4, respectively.

[0025] The other end of the rotating rod 602 is connected to a pull plate 603. The positioning mechanism 6 is provided with a guide barrel 606 fixed on the telescopic table 4. A positioning pin 604 is vertically slidably installed inside the guide barrel 606. The pull plate 603 is fixedly connected to the top of the positioning pin 604. The positioning pin 604 is used to insert into the positioning hole set on the bottom surface of the workbench 3. This purely mechanical structure, which uses the foot pedal 601, rotating rod 602, and pull plate 603 to link the positioning pin 604 and uses the spring 607 to reset, ensures the convenience and high reliability of locking the telescopic table 4.

[0026] In a preferred embodiment, to ensure the smoothness and symmetry of the chain 506 transmission, the first gear 504 in the telescopic lifting mechanism 5 is rotatably mounted on both sides above the second telescopic rod 502, and the second gear 505 is rotatably mounted on both sides below the second telescopic rod 502. This symmetrical arrangement ensures that the chain 506 is subjected to balanced force during lifting, avoiding skew caused by unilateral force and enhancing the stability of the lifting action.

[0027] In another preferred embodiment, in order to provide a stable fulcrum for the rotating rod 602, the positioning mechanism 6 is provided with a support frame 605. The support frame 605 is firmly fixed to the upper surface of the telescopic platform 4. The rotating rod 602 is pivotally connected to the support frame 605 by a pin. The rotating rod 602 rotates around the pivot point of the support frame 605, thereby reliably transmitting the stepping action of the foot pedal 601.

[0028] In another preferred embodiment, in order to realize the automatic reset and locking function of the positioning mechanism 6, the positioning mechanism 6 is provided with a spring 607. The spring 607 is located between the foot pedal 601 and the telescopic platform 4. When the foot pedal 601 is stepped down, the spring 607 is compressed. When the external force is released, the elastic force of the spring 607 drives the foot pedal 601 to reset.

[0029] In the above-described embodiment of spring 607, more preferably, spring 607 is a compression spring, with both ends of spring 607 abutting against the lower surface of foot pedal 601 and the upper surface of telescopic platform 4, respectively. This abutting method has a simple structure, allowing the pedaling force to act directly on spring 607, resulting in a direct response and convenient installation.

[0030] As another preferred embodiment, in order to ensure the precise guidance of the positioning pin 604 during the movement, the positioning mechanism 6 is provided with a guide barrel 606. The guide barrel 606 is fixed on the telescopic table 4 and passes through the telescopic table 4. The positioning pin 604 is vertically slidably disposed in the inner hole of the guide barrel 606. The inner wall of the guide barrel 606 provides precise guidance for the up and down movement of the positioning pin 604, preventing the positioning pin 604 from getting stuck or deviating when inserted into or pulled out of the positioning hole.

[0031] As another preferred embodiment, in order to ensure that the lifting force of the pull plate 603 is effectively transmitted, the pull plate 603 is fixedly connected to the top of the positioning pin 604. This direct fixed connection ensures that when the rotating rod 602 drives the pull plate 603 to move upward, the pull plate 603 can lift the positioning pin 604 from the positioning hole without delay, realizing the instantaneous response of the unlocking action.

[0032] Working principle: When the height of the worktable 3 needs to be adjusted, the motor 509 is started. The motor 509 drives the lead screw 5010 to rotate. The lead screw 5010 directly drives the second telescopic rod 502 to slide up and down along the inner wall of the third telescopic rod 503 through a threaded connection. When the second telescopic rod 502 moves upward, it drives the first gear 504 and the second gear 505, which are rotatably mounted on it, to move upward together. Since one end of the chain 506 is fixed to the stationary third telescopic rod 503 through the first fixing member 507, the chain 506 passes around the moving first gear 504 and the second gear 505. The other end of the chain 506 pulls the first telescopic rod 501 through the second fixing member 508, so that the first telescopic rod 501 slides upward at twice the speed of the second telescopic rod 502, thereby driving the worktable 3 to rise quickly and smoothly. The motion principle of the descent process is the opposite, realizing efficient double-speed lifting. When the telescopic platform 4 needs to be extended or retracted, in the initial locked state, the spring force of the spring 607 pushes the foot pedal 601, and through the rotating rod 602 and the pull plate 603, the positioning pin 604 is kept inserted into the positioning hole of the worktable 3. At this time, the telescopic platform 4 is locked. When the operator steps on the foot pedal 601, the foot pedal 601 overcomes the spring force of the spring 607 and rotates around the support frame 605. The rotating rod 602 drives the pull plate 603 to move upward, and the pull plate 603 then drives the positioning pin 604 to be pulled out of the positioning hole, and the telescopic platform 4 is unlocked. At this time, the telescopic platform 4 can be pushed horizontally to adjust the working area. When the foot pedal 601 is released, the spring force of the spring 607 returns to its original state, causing the foot pedal 601 to rebound, and the positioning pin 604 is automatically inserted into the corresponding positioning hole under the guidance of the guide barrel 606, realizing automatic locking.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mobile telescopic lifting work platform, comprising: Mobile vehicle (1) and workbench (3); Telescopic lifting mechanism (5), the telescopic lifting mechanism (5) connecting the mobile vehicle (1) and the workbench (3), characterized in that: The telescopic lifting mechanism (5) includes a third telescopic rod (503) fixedly connected to the mobile vehicle (1), a second telescopic rod (502) slidably sleeved within the third telescopic rod (503), a motor (509) installed within the mobile vehicle (1), the motor (509) driving a lead screw (5010) to rotate, the lead screw (5010) being threadedly connected to the second telescopic rod (502), and a first telescopic rod (501) slidably sleeved within the second telescopic rod (502). The upper end of 01) is fixedly connected to the workbench (3). The first gear (504) and the second gear (505) are rotatably mounted on the second telescopic rod (502). A chain (506) passes around the first gear (504) and the second gear (505). One end of the chain (506) is fixed to the inner wall of the third telescopic rod (503) by the first fixing member (507). The other end of the chain (506) is fixed to the lower end of the first telescopic rod (501) by the second fixing member (508).

2. The mobile telescoping lift platform of claim 1, wherein, The workbench (3) includes a telescopic platform (4) that is slidably connected; the mobile telescopic lifting work platform is provided with a positioning mechanism (6), the positioning mechanism (6) includes: a positioning pin (604), the positioning pin (604) is vertically slidably installed on the telescopic platform (4) and is used to insert into a positioning hole provided on the workbench (3); a rotating rod (602), the rotating rod (602) is rotatably connected to the telescopic platform (4); a foot pedal (601), the foot pedal (601) is connected to one end of the rotating rod (602); a pull plate (603), the pull plate (603) is connected to the other end of the rotating rod (602), and the pull plate (603) is connected to the positioning pin (604).

3. The mobile telescopic lifting work platform according to claim 1, characterized in that, The mobile telescopic lifting work platform is equipped with a ladder (2), which is fixedly connected to the side wall of the mobile vehicle (1).

4. A mobile telescopic lifting work platform according to claim 1, characterized in that, The first gear (504) is rotatably mounted on the upper sides of the second telescopic rod (502), and the second gear (505) is rotatably mounted on the lower sides of the second telescopic rod (502).

5. A mobile telescopic lifting work platform according to claim 2, characterized in that, The positioning mechanism (6) is provided with a support frame (605), which is fixed on the telescopic platform (4), and the rotating rod (602) rotates around the support frame (605).

6. A mobile telescopic lifting work platform according to claim 2, characterized in that, The positioning mechanism (6) is provided with a spring (607), which is located between the foot pedal (601) and the telescopic platform (4).

7. A mobile telescoping lift platform as claimed in claim 6, wherein, The spring (607) is a compression spring, and the two ends of the spring (607) abut against the lower surface of the foot pedal (601) and the upper surface of the telescopic platform (4), respectively.

8. A mobile telescopic lifting work platform according to claim 2, characterized in that, The positioning mechanism (6) is provided with a guide barrel (606), the guide barrel (606) is fixed on the telescopic platform (4), and the positioning pin (604) is slidably disposed in the guide barrel (606).

9. The mobile telescoping lift platform of claim 2, wherein, The pull plate (603) is fixedly connected to the top of the positioning pin (604).

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