Construction dolly

Abstract

This utility model relates to a construction unloading block, comprising an upper support base, a left support body, a right support body, and a lower support base. Both the upper and lower support bases have concave triangular grooves in their middle portions. The upper and lower ends of the left and right support bodies are located within these triangular grooves. The upper and lower end faces of the left and right support bodies are inclined surfaces, slidingly engaging with the left and right inclined surfaces within the triangular grooves of the upper and lower support bases. Both sides of the upper and lower ends of the left and right support bodies are slidably confined within the triangular grooves. A positioning and rotating screw is provided on the inner surface of the left support body. The screw engages with a screw hole in the right support body, and a rotating operating part is provided at the end of the screw protruding from the screw hole. The distance between the left and right support bodies changes and adjusts with the rotation of the screw, thereby adjusting the height between the upper and lower support bases and achieving height adjustment of the unloading block, making operation and use convenient.

Description

Technical Field

[0001] This utility model relates to construction machinery and equipment, specifically a construction unloading block. Background Technology

[0002] In the construction field, a sling block is a support component with a certain strength, mainly used for adjusting the height of temporary building support structures or bridge support systems to ensure the safety of the support system. After construction is completed, the load is transferred by adjusting the height of the sling block, making construction and use relatively convenient. Most existing sling blocks are wedge-shaped structures, such as the utility model entitled "A Self-Locking Sling Block Device" published in Chinese patent literature, authorization announcement number CN216712746U, authorization announcement date June 10, 2020. It mainly includes a lower support, a left support, a right support, an upper support, a bolt rod, and a nut. The upper and lower isosceles surfaces of the left and right supports slide and fit against the left and right isosceles surfaces of the upper and lower supports, respectively, and the left and right supports are locked together by the bolt rod and nut, thus forming a stable sling block structure. However, the disadvantages of this structure are: 1. When the bolt rod corrodes and breaks, the entire sling block will completely fall apart and lose its supporting effect. 2. The upper and lower supports of this type of unloading block are only adjustable vertically, without horizontal adjustment; that is, the support surface is fixed and cannot be adjusted. 3. The upper support of this type of unloading block is bolted to the corresponding beam frame, and its position is generally not adjustable. This relatively simple fixing method leads to inconvenience in use. Therefore, improvements to the existing unloading block structure are needed. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a construction unloading block that solves the technical problems of existing similar unloading blocks having a relatively simple structural function, lacking horizontal support adjustment, and having a limited range of applications. This objective is achieved through the following technical solution.

[0004] A construction unloading block includes an upper support base, a left support body, a right support body, and a lower support base. Its key structural feature is that both the upper and lower support bases have concave triangular grooves in their middle portions. The upper and lower ends of the left and right support bodies are located within these triangular grooves. The upper and lower ends of the left support body are inclined surfaces, slidingly engaging with the left inclined surface within the triangular groove of the upper and lower support bases. The upper and lower ends of the right support body are also inclined surfaces, slidingly engaging with the right inclined surface within the triangular groove of the upper and lower support bases. Both sides of the upper and lower ends of the left and right support bodies are slidably confined within the triangular grooves. A positioning and rotating screw is provided on the inner surface of the left support body, engaging with a screw hole in the right support body. A rotating operating part is provided at the end of the screw protruding from the screw hole. With the above structure, the distance between the left and right supports changes and is adjusted as the screw rotates, thereby adjusting the height between the upper and lower support seats and realizing the height adjustment of the unloading block, which is relatively convenient to operate and use.

[0005] Both the upper and lower support seats are composed of a left support and a right support. Each of the left and right supports has half of the triangular groove. The left and right supports are locked together by at least one adjusting bolt. This structure allows for horizontal adjustment between the left and right supports via the adjusting bolt, enabling horizontal support adjustment of the unloading block, i.e., adjustable support surface, thus improving support stability.

[0006] The left support is equipped with a horizontally protruding slider, and the right support is equipped with a groove or hole that slides with the slider. When the left and right supports are connected by the adjusting bolt, the slider engages with the groove, or the slider or the hole. This structure improves the stability of the relative horizontal adjustment of the left and right supports.

[0007] The top of both the left and right supports of the upper support base is integrated with a slot seat with bolt connection holes. This structure facilitates the slot seat to form a snap-fit ​​with the corresponding bracket component and slide adjustment. After adjustment, it is locked in place with bolts, making it quick and convenient to use.

[0008] The slots of the left and right supports are horizontally opposite each other, and the top surface of the slots is provided with bolt connection holes. This structure is a specific implementation of the slot structure, which facilitates effective locking and sliding with components such as I-beams.

[0009] The inner surface of the left support body is provided with a rotating groove, and a rotating block is integrated into one end of the screw. The rotating block is rotatably positioned within the rotating groove. A limiting cap that fits onto the screw is provided on the end face of the rotating groove. The limiting cap is fixed to the inner surface of the left support body by screws, thus confining the rotating block within the rotating groove. This structure is a specific implementation of the connection between the screw and the left support body, and the connection is relatively convenient and reliable.

[0010] The overall structure of this utility model is relatively simple, which not only enables quick assembly and use, but also prevents the left and right support bodies from easily detaching and failing, ensuring that the overall support will not completely fail. The support is firm and stable, and the adjustment and use are quick and convenient. It can not only be raised, but also the support surfaces of the upper and lower support seats can be adjusted. It has a wide range of applications and is suitable for use as a sluice block in the construction field, or as an improvement on similar sluice block structures. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 yes Figure 1 A cross-sectional structural diagram.

[0013] Figure 3 yes Figure 1 A schematic diagram of the improved three-dimensional structure.

[0014] Figure 4 yes Figure 3 A cross-sectional structural diagram.

[0015] Figure 5 yes Figure 3 A schematic diagram of the improved three-dimensional structure.

[0016] Figure 6 yes Figure 5 A schematic diagram of the improved scheme.

[0017] Figure 7 yes Figure 6 A schematic diagram of the implementation status structure.

[0018] The numbers and names in the diagram are as follows: 1. Upper support seat, 101. Triangular groove, 2. Left support body, 201. Rotating groove, 3. Right support body, 4. Lower support seat, 5. Screw, 501. Rotating operating part, 502. Rotating block, 6. Limit cover, 7. Left support, 701. Sliding block, 8. Right support, 801. Slide groove, 9. Adjusting bolt, 10. Slot seat, 1001. Bolt connection hole, 11. I-beam. Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings.

[0020] like Figure 1 , Figure 2As shown, the building unloading block includes an upper support 1, a left support 2, a right support 3, and a lower support 4. The upper and lower support 2 each have a concave triangular groove 101 in their middle portions. The upper and lower ends of the left and right support are located within the triangular grooves of the upper and lower support 2. The upper and lower ends of the left support are inclined surfaces and slide in cooperation with the left inclined surface within the triangular groove of the upper and lower support 2. The upper and lower ends of the right support are inclined surfaces and slide in cooperation with the right inclined surface within the triangular groove of the upper and lower support 2. Both sides of the upper and lower ends of the left and right support are slidably limited within the triangular groove. The inner side of the left support is provided with a positioning and rotating screw 5. Specifically, the inner side of the left support is provided with a rotating groove 201, and one end of the screw is integrated with a rotating block 502. The rotating block rotates and is placed within the rotating groove. The end face of the rotating groove is provided with a limiting cover 6 sleeved on the screw. The limiting cover is fixed to the inner side of the left support by screws, thus limiting the rotating block within the rotating groove. The aforementioned screw mates with the screw hole of the right support body, and the end of the screw protruding from the screw hole is provided with a rotating operating part 501, which is a polygonal hole or a polygonal shaft. The distance between the left and right support bodies changes and is adjusted as the screw rotates, and the height between the upper and lower support seats changes and is adjusted as the distance between the left and right support bodies changes.

[0021] like Figure 3 , Figure 4 As shown, the upper support 1 and the lower support 4 are both composed of a left support 7 and a right support 8. The left support and the right support are each provided with a half of a triangular groove 101. The left support and the right support are locked together by at least one adjusting bolt 9.

[0022] like Figure 5 As shown, the left support 7 is provided with a horizontally protruding slider 701, and the right support 8 is provided with a sliding groove 801 that slides with the slider. When the left support and the right support are connected by a pair of adjusting bolts 9, the slider and the sliding groove cooperate.

[0023] like Figure 6 As shown, the tops of the left support 7 and right support 8 of the upper support 1 are both integrated with a slot seat 10. The slots of the slot seats of the left and right supports are arranged horizontally opposite each other, and the top surface of the slot seat is provided with a bolt connection hole 1001. Figure 7 As shown, the above-mentioned slot seat facilitates the top of the unloading block to be engaged with the bottom of the I-beam and slide for adjustment. After adjustment, the locking bolt is connected to the I-beam 11 through the bolt connection hole to form a locking and fixing.

[0024] When in use, the upper support seat 1 can be raised or lowered by turning the screw 501 of the operating screw 5 with an external tool such as a wrench, thereby providing support or relieving stress. By turning the adjusting bolt 9, the distance between the left support 7 and the right support 8 of the upper support seat can be adjusted, thereby adjusting the support surface of the upper support seat and improving the stability of the support.

[0025] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made to this utility model by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of this utility model.

Claims

1. A construction unloading block, comprising an upper support (1), a left support (2), a right support (3), and a lower support (4); characterized in that... The upper support (1) and lower support (4) both form concave triangular grooves (101) in the middle. The upper and lower ends of the left support (2) and right support (3) are located in the triangular grooves of the upper and lower support. The upper and lower end faces of the left support are inclined and slide in cooperation with the left inclined surface in the triangular groove of the upper and lower support. The upper and lower end faces of the right support are inclined and slide in cooperation with the right inclined surface in the triangular groove of the upper and lower support. The upper and lower ends of the left and right support are both slidably limited in the triangular groove. The inner side of the left support is provided with a positioning and rotating screw (5). The screw is engaged with the screw hole of the right support, and the end of the screw that passes through the screw hole is provided with a rotating operating part (501).

2. The unloading block for construction according to claim 1, characterized in that... The upper support (1) and lower support (4) are both composed of a left support (7) and a right support (8). The left support and the right support are each provided with half of the triangular groove (101). The left support and the right support are locked together by at least one adjusting bolt (9).

3. The unloading block for construction according to claim 2, characterized in that... The left support (7) is provided with a horizontally protruding slider (701), and the right support is provided with a sliding groove (801) or a sliding hole that slides with the slider. When the left support and the right support are connected by the adjusting bolt (9), the slider is engaged with the sliding groove, or the slider or the sliding hole is engaged.

4. The construction unloading block according to claim 2, characterized in that... The top of the left support (7) and right support (8) of the upper support (1) are both integrated with a slot seat (10) with bolt connection hole (1001).

5. The construction unloading block according to claim 4, characterized in that... The slots of the slot seats (10) of the left support (7) and the right support (8) are arranged horizontally opposite each other, and the top surface of the slot seats is provided with bolt connection holes (1001).

6. The construction unloading block according to claim 1, characterized in that... The inner side of the left support (2) is provided with a rotating groove (201), and one end of the screw (5) is integrated with a rotating block (502). The rotating block is rotated and placed in the rotating groove. The end face of the rotating groove is provided with a limiting cover (6) sleeved on the screw. The limiting cover is fixed to the inner side of the left support by screws and limits the rotating block to the rotating groove.

Images