A small mobile lifting frame for indoor construction

Abstract

This utility model discloses a small indoor building mobile lifting frame, including a mobile base, a scissor lift mechanism, and a working platform. The mobile base has an auxiliary support structure at its bottom. The auxiliary support structure includes a base frame on the mobile base, a telescopic groove on the base frame, and a telescopic frame on each side of the base frame. The telescopic frames are telescopically connected to their respective telescopic grooves, and the two telescopic frames are symmetrically arranged and can move synchronously under the drive of a synchronizing component. When the telescopic frame moves relative to the base frame to a designated position, a limiting component connects the telescopic frame and the base frame. A support frame is hinged to the telescopic frame, and the support frame can be flipped relative to the telescopic frame to a first position. In the first position, the support frame is perpendicular to the ground, and a support foot pad is provided at the bottom of the support frame, with the support foot pad in contact with the ground.

Description

Technical Field

[0001] This utility model belongs to the technical field of building lifting equipment, and in particular relates to a small indoor building mobile lifting frame. Background Technology

[0002] In existing technologies, small indoor mobile lifting frames for construction typically use casters with locking functions at the bottom for fixed support. However, when the lifting frame is raised to a higher position, its center of gravity rises significantly, and relying solely on the locking of the wheels is insufficient to provide adequate lateral stability, making it prone to swaying and, in severe cases, even tipping over, posing a significant safety hazard.

[0003] For example, Chinese invention patent CN111852074A discloses an adjustable lifting support device, which achieves movement and fixation through footrests and wheels, but it does not solve the stability problem caused by insufficient support base area when raised. Chinese utility model patent CN222729437U discloses a lifting frame for interior decoration, which improves stability through a counterweight base plate and casters, but when the lifting height is high, its base plate area is fixed, making it impossible to dynamically adjust the support range and still failing to effectively avoid the risk of tipping over.

[0004] Therefore, existing mobile lifting platforms suffer from insufficient stability when raised, necessitating a solution that can dynamically adjust the support range and improve stability. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a small indoor building mobile lifting frame, which effectively improves the stability and safety of the lifting frame in the raised state.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a small indoor building mobile lifting frame, comprising a mobile base, a scissor-type lifting mechanism, and a working platform, characterized in that: the bottom of the mobile base is provided with an auxiliary support structure; the auxiliary support structure includes a base frame disposed on the mobile base, the base frame is provided with a telescopic groove, and each side of the base frame is provided with a telescopic frame, the telescopic frames are telescopically connected to the corresponding telescopic groove, the two telescopic frames are symmetrically arranged, and can move synchronously under the drive of a synchronizing component; when the telescopic frame moves relative to the base frame to a designated position, the telescopic frame and the base frame are limited and connected by a limiting component; a support frame is hinged on the telescopic frame, the support frame can be flipped relative to the telescopic frame to a first position, in the first position, the support frame is perpendicular to the ground, the bottom of the support frame is provided with a support foot pad, and the support foot pad is in contact with the ground.

[0007] Preferably, the telescopic frame includes a plurality of parallel telescopic plates, each telescopic plate being arranged corresponding to the telescopic groove, and each telescopic plate being at least partially inserted into the telescopic groove; the end of each telescopic plate away from the telescopic groove is hinged to the support frame, and the support frame can drive the telescopic plates to move synchronously.

[0008] Preferably, a central rod is rotatably mounted on the base frame, and a connecting rod is symmetrically hinged to each end of the central rod. The connecting rods are hinged to the telescopic plates via sliding shafts. A guide groove is provided on the wall of the telescopic groove, and the sliding shaft is fitted into the guide groove and moves relative to the base frame along the length direction of the telescopic groove under the guidance of the guide groove. When the central rod rotates, the telescopic plates on both sides of the central rod can move synchronously towards or away from each other.

[0009] Preferably, a tension spring is provided in the telescopic groove, and the tension spring is connected to the telescopic plate. The tension spring can generate a pulling force that drives the telescopic plate to move inward into the telescopic groove.

[0010] Preferably, the limiting member is a pin, the base frame is provided with a first pin hole, and the telescopic plate is provided with a limiting hole. When the telescopic plate moves to the second position away from the telescopic groove, the pin can be inserted into the limiting hole to restrict the telescopic plate from moving further.

[0011] Preferably, the support frame has connecting shafts at both ends, and the telescopic plate has connecting holes. The connecting holes include a rotating hole and an elongated groove above the rotating hole. The inner diameter of the rotating hole is greater than the maximum width of the connecting shaft. The connecting shaft is a regular polygonal shaft and can rotate within the rotating hole. The distance between the rotating hole and the ground is less than the height of the support frame. When the support frame rotates to the first position, the support frame will be squeezed by the ground, and the connecting shaft can be inserted into the elongated groove. The connecting shaft and the elongated groove slide together, and the groove surface of the elongated groove will restrict the rotation of the connecting shaft.

[0012] Preferably, the area where the side edge of the connecting shaft is located has a rounded chamfer.

[0013] Preferably, the support frame includes multiple horizontal bars and multiple vertical bars, and the vertical bars are provided with support pads; the telescopic groove has a slot on the side wall facing the support frame, and when the telescopic plate moves to the second position, the support frame can be engaged into the slot.

[0014] Preferably, when both the support frame and the telescopic plate are moved to below the movable base, the pin passes through at least a portion of the area where the telescopic plate or the support frame is located.

[0015] The technical advantages of this invention are as follows: The retractable auxiliary support structure dynamically expands the support range when the frame is raised, effectively reducing the risk of tipping over. Furthermore, the auxiliary support structure can be completely retracted into the telescopic groove without increasing the overall volume of the lifting frame, facilitating movement and storage in confined indoor spaces. Attached Figure Description

[0016] Figure 1 This is a first structural schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the second structure of the present invention.

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 for Figure 3 Enlarged view of part B in the middle

[0020] Figure 5 This is a schematic diagram of the third structure of this utility model.

[0021] Figure 6 for Figure 5 Enlarged view of part C in the middle

[0022] The main technical features in the figure are labeled as follows: 1. Movable base; 11. Shear-type lifting mechanism; 13. Working platform; 14. Universal wheel; 15. One-way wheel; 2. Base frame; 21. Square tube; 22. Telescopic groove; 3. Telescopic frame; 31. Telescopic plate; 32. Support frame; 33. Connecting hole; 34. Connecting shaft; 35. Rotating hole; 36. Long groove; 37. Rounded chamfer; 38. Horizontal bar; 39. Vertical bar; 391. Support foot pad; 4. Slot; 5. Center rod; 51. Connecting rod; 52. Guide groove; 53. Tension spring; 6. First pin hole; 61. Limiting hole. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] like Figures 1-6 As shown, a small indoor building mobile lifting frame includes a mobile base 1, a shear-type lifting mechanism 11, and a work platform 13. The mobile base 1, shear-type lifting mechanism 11, and work platform 13 are existing technologies. The mobile base 1 has universal casters 14 with locking function installed on its rear bottom, and ordinary one-way casters 15 on its front. The bottom of the shear-type lifting mechanism 11 is fixedly installed on the mobile base 1, and the work platform 13 is installed on its top for driving the lifting and lowering of the work platform 13.

[0025] Furthermore, the bottom of the mobile base 1 is provided with an auxiliary support structure, which includes a base frame 2. The base frame 2 is located below the mobile base 1, and two parallel square tubes 21 are fixedly connected to its bottom. The square tubes 21 are distributed on the front and rear sides of the base frame 2. The pipe holes in the square tubes 21 serve as telescopic grooves 22, and a telescopic frame 3 can be movably inserted into each end of the tubes 21.

[0026] Furthermore, the telescopic frame 3 consists of two symmetrically arranged telescopic plates 31, which are fixedly connected by a connecting plate. The telescopic plates 31 are inserted into corresponding square tubes 21 and move relative to each other along the guide of the telescopic groove 22. A support frame 32 is hinged to one end of each telescopic plate 31 away from the telescopic groove 22. The support frame 32 is located between the two telescopic plates 31, and connecting shafts 34 are fixed to both ends of it. Each telescopic plate 31 has a connecting hole 33, which is an irregularly shaped hole consisting of a circular rotating hole 35 and an elongated groove 36 above the rotating hole 35. The inner diameter of the rotating hole 35 is larger than the maximum width of the connecting shaft 34. The connecting shaft 34 is a square shaft that can rotate within the rotating hole 35. Its width is the same as the width of the elongated groove 36, allowing it to slide within the elongated groove 36. The distance from the rotating hole 35 to the ground is less than the height of the support frame 32.

[0027] Furthermore, the side edge of the connecting shaft 34 is provided with a rounded chamfer 37 to facilitate insertion into the long groove 36.

[0028] Furthermore, the support frame 32 consists of two horizontal bars 38 and two vertical bars 39, which are perpendicularly intersecting each other. A support foot pad 391 is fixed to one end of the vertical bar 39 away from the connecting shaft 34. The support foot pad 391 is existing technology and can be a commonly used rubber pad.

[0029] Furthermore, slots 4 are provided on the pipe walls of the square tube 21 near the support frame 32 at both ends. When the telescopic plate 31 moves toward the square plate, the connecting plate and the support frame 32 can be simultaneously inserted into the slots 4.

[0030] Furthermore, a central rod 5 is rotatably mounted on the bottom of each square tube 21. A connecting rod 51 is symmetrically hinged to each end of the central rod 5. The connecting rod 51 is hinged to the telescopic plate 31 via a sliding shaft. A guide groove 52 is provided at the bottom of the square tube 21. The sliding shaft is fitted into the guide groove 52 and can move relative to the base frame 2 along the length direction of the telescopic groove 22 under the guidance of the guide groove 52. A tension spring 53 is provided inside the square tube 21. The tension spring 53 is connected to the telescopic plates 31 on both sides. The tension spring 53 can generate a pulling force to drive the telescopic plates 31 to move into the telescopic groove 22. When the central rod 5 rotates, the telescopic plates 31 on both sides of the central rod 5 can move synchronously towards or away from each other.

[0031] Furthermore, a first pin hole 6 is provided on the base frame 2, a through hole is provided on the square tube 21, and a limiting hole is provided on the telescopic plate 31. When the telescopic plate 31 extends to its limit stroke, a limiting member is inserted into the first pin hole 6. The limiting member passes through the through hole and is inserted into the limiting hole 61. The limiting member is preferably an L-shaped pin. When the telescopic plate 31 retracts with the support frame 32, the support frame 32 is in a parallel state with the telescopic plate 31 due to the limiting of the slot 4. The limiting member can be inserted between the two crossbars 38 to restrict the extension of the telescopic plate 31.

[0032] The specific implementation process of this utility model is as follows: When the mobile lifting frame moves to the corresponding work position, the wheels are locked first, the limit piece is pulled up a certain stroke without separating from the mobile base 1, and at the same time, the single-sided support frame 32 is pulled outward, and the telescopic frame 3 is pulled out to the limit position along with the support frame 32. At this time, the telescopic frame 3 on the other side will also extend outward synchronously, and the telescopic frame 3 and the support frame 32 tend to be parallel. When it extends to the limit position, the limit piece will fall due to gravity and insert into the limit hole, and the telescopic plate 31 stops moving; the support frames 32 on both sides are flipped to a state that is about to be perpendicular to the telescopic frame 3, so that the support frame 32 is subjected to external squeezing and impact force. The support frame 32 will be affected by ground squeezing and squeezing impact force. The connecting shaft 34 can be inserted into the long groove 36, and the connecting shaft 34 abuts against the top groove surface of the long groove 36; thus realizing auxiliary support for the mobile base 1.

[0033] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. The present utility model can be used in similar products. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A small indoor building mobile lifting frame, comprising a mobile base (1), a scissor lift mechanism and a working platform (13), characterized in that: The bottom of the movable base (1) is provided with an auxiliary support structure; The auxiliary support structure includes a base frame (2) provided on the movable base (1), the base frame (2) is provided with a telescopic groove (22), and a telescopic frame (3) is provided on each side of the base frame (2). The telescopic frame (3) is telescopically connected to the corresponding telescopic groove (22). The two telescopic frames (3) are symmetrically arranged and can move synchronously under the drive of the synchronous component. When the telescopic frame (3) moves to the designated position relative to the base frame (2), the telescopic frame (3) and the base frame (2) are connected by a limiting member; A support frame (32) is hinged to the telescopic frame (3). The support frame (32) can be flipped relative to the telescopic frame (3) to a first position. In the first position, the support frame (32) is set perpendicular to the ground. The bottom of the support frame (32) is provided with a support foot pad (391), which is in contact with the ground.

2. The small indoor building mobile lifting frame according to claim 1, characterized in that: The telescopic frame (3) includes a plurality of parallel telescopic plates (31), each telescopic plate (31) being arranged corresponding to the telescopic groove (22), and each telescopic plate (31) being at least partially inserted into the telescopic groove (22); the end of each telescopic plate (31) away from the telescopic groove (22) is hinged to the support frame (32), and the support frame (32) can drive the telescopic plates (31) to move synchronously.

3. A small indoor building mobile lifting frame according to claim 2, characterized in that: A central rod (5) is rotatably mounted on the base frame (2). A connecting rod (51) is symmetrically hinged to each end of the central rod (5). The connecting rod (51) is hinged to the telescopic plate (31) through a sliding shaft. A guide groove (52) is provided on the groove wall of the telescopic groove (22). The sliding shaft is fitted into the guide groove (52) and moves relative to the base frame (2) along the length direction of the telescopic groove (22) under the guidance of the guide groove (52). When the central rod (5) rotates, the telescopic plates (31) on both sides of the central rod (5) can move synchronously towards or away from each other.

4. A small indoor building mobile lifting frame according to claim 3, characterized in that: A tension spring (53) is provided in the telescopic groove (22). The tension spring (53) is connected to the telescopic plate (31). The tension spring (53) can generate a pulling force that drives the telescopic plate (31) to move in the telescopic groove (22).

5. A small indoor building mobile lifting frame according to claim 2, characterized in that: The limiting component is a pin. The base frame (2) is provided with a first pin hole (6), and the telescopic plate (31) is provided with a limiting hole. When the telescopic plate (31) moves away from the telescopic groove (22) to the second position, the pin can be inserted into the limiting hole to restrict the telescopic plate (31) from continuing to move.

6. A small indoor building mobile lifting frame according to claim 5, characterized in that: The support frame (32) has connecting shafts (34) at both ends, and the telescopic plate (31) has connecting holes (33). The connecting holes (33) include a rotating hole (35) and a long groove (36) above the rotating hole (35). The inner diameter of the rotating hole (35) is greater than the maximum width of the connecting shaft (34). The connecting shaft (34) is a regular polygonal shaft. The connecting shaft (34) can rotate in the rotating hole (35). The distance between the rotating hole (35) and the ground is less than the height of the support frame (32). When the support frame (32) rotates to the first position, the support frame (32) will be squeezed by the ground. The connecting shaft (34) can be inserted into the long groove (36). The connecting shaft (34) and the long groove (36) slide together, and the groove surface of the long groove (36) will restrict the rotation of the connecting shaft (34).

7. A small indoor building mobile lifting frame according to claim 6, characterized in that: The area where the side edge of the connecting shaft (34) is located is provided with a rounded chamfer (37).

8. A small indoor building mobile lifting frame according to claim 5, characterized in that: The support frame (32) includes multiple horizontal bars (38) and multiple vertical bars (39), and the vertical bars (39) are provided with support foot pads (391); the telescopic groove (22) has a slot (4) on the side wall facing the support frame (32), and when the telescopic plate (31) moves to the second position, the support frame (32) can be engaged into the slot (4).

9. A small indoor building mobile lifting frame according to claim 8, characterized in that: When both the support frame (32) and the telescopic plate (31) move to below the movable base (1), the pin passes through at least a portion of the area where the telescopic plate (31) or the support frame (32) is located.

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