An adjustable jack for building construction

Abstract

The present invention relates to the technical field of construction equipment, and specifically discloses an adjustable jack for construction, including a first support rod, a second support rod, a rotation adjustment nut and a positioning screw, the first support rod is telescopically connected to the second support rod, the rotation adjustment nut and the first support rod are sequentially sleeved on the outside of the second support rod from bottom to top, the rotation adjustment nut is threadedly connected to the second support rod, the upper end of the rotation adjustment nut is against the bottom of the first support rod, and the positioning screw passes through the first support rod and is against the outside of the second support rod. The present invention sets a rotation adjustment nut threadedly connected to the outside of the second support rod. When the rotation adjustment nut is rotated, the rotation adjustment nut can move upward or downward, thereby supporting the first support rod to move upward or downward, thereby realizing fine adjustment of the height of the first support rod to meet on-site construction needs.

Description

Technical Field

[0001] The invention relates to the technical field of building construction equipment, in particular to an adjustable jack for building construction. Background Art

[0002] Scaffolding is a working platform set up to ensure the smooth progress of each construction process. It is usually used with a jack at the construction site. After searching, the Chinese invention patent with patent application number CN202121054858.8 discloses a walking device of an integrally movable socket-type disc buckle scaffolding support system. The walking device is fixed on the vertical pole of the scaffolding, and the movement of the scaffolding is achieved by pulling the vertical pole. The walking device includes a towing pulley, a vertical pole bracket, a jack, a traction belt and a traction machine. The towing pulley is fixedly connected to the bottom end of the vertical pole, and the vertical pole bracket is fixed under the vertical pole disc buckle. The vertical pole bracket is stressed by the jack, and the towing pulley is loaded and unloaded. One end of the traction belt is set on the vertical pole disc buckle, and the other end is fixed to the traction machine. This application has the effect of realizing the horizontal movement of the scaffolding without dismantling the scaffolding.

[0003] Another example is a Chinese invention patent application with patent application number CN202410753832.4, which discloses a construction method of an attached lifting scaffold on a step-type variable-section building, comprising the following steps: removing the parts on both sides of the lifting scaffold frame installed on the lower side wall of the building step, installing scissor jacks at corresponding positions on the upper side wall of the building step and the guide rail of the lifting scaffold frame, raising the height of the lifting scaffold frame, and compressing the scissor jacks in a top-to-bottom order until the upper and lower scissor jacks of the lifting scaffold frame are all compressed to the shortest. This invention sets a scissor jack, and adjusts the horizontal position of the guide rail seat by the scissor jack, so as to directly lift the lifting scaffold at the lower part of the building step to the upper part of the building step, and then gradually reduces the distance between the lifting scaffold frame and the side wall of the building by the scissor jack, so as to reduce the lifting scaffold and adapt it to the size of the upper part of the building step.

[0004] Although the above-mentioned existing jacks can meet basic usage requirements, they can only adjust the height one level at a time and cannot be finely adjusted to the required height according to on-site construction requirements. Therefore, it is necessary to make further improvements to the existing jacks. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, an adjustable jack for construction is provided, by providing a rotary adjusting nut threadedly connected to the outer side of the second support rod. When the rotary adjusting nut is rotated, the rotary adjusting nut can move upward or downward, thereby supporting the first support rod to move upward or downward, thereby realizing fine adjustment of the height of the first support rod to meet on-site construction needs.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] An adjustable jack for construction, comprising a first support rod, a second support rod, a rotation adjustment nut and a positioning screw, the first support rod and the second support rod are telescopically connected, the rotation adjustment nut and the first support rod are sequentially sleeved on the outer side of the second support rod from bottom to top, the rotation adjustment nut is threadedly connected to the second support rod, the upper end of the rotation adjustment nut abuts against the bottom of the first support rod, and the positioning screw passes through the first support rod and abuts against the outer side of the second support rod.

[0008] Preferably, the outer side of the second support rod is provided with an external thread, and the inner side of the rotary adjustment nut is provided with an internal thread matching the external thread.

[0009] Preferably, a plurality of positioning grooves matched with the positioning nut are formed on the outer side of the second support rod, and the ends of the positioning screw are inserted into the positioning grooves.

[0010] Preferably, a screw through hole for inserting the positioning screw is formed on the outer side of the first support rod, an inner peripheral wall of the screw through hole is provided with an internal thread, and an outer peripheral wall of the positioning screw is provided with an external thread matching the internal thread.

[0011] Preferably, a rotation adjustment handle is provided on the outer side of the rotation adjustment nut, a handle through hole is opened on the rotation adjustment handle, and a lock hook adapted to the outer side of the rotation adjustment nut is rotatably mounted on the outer side of the bottom of the first support rod.

[0012] Preferably, a first connecting plate is disposed at the upper end of the first supporting rod, a second connecting plate is disposed at the bottom of the second supporting rod, and a plurality of connecting through holes are formed on the first connecting plate and the second connecting plate.

[0013] By adopting the above technical scheme, the present invention provides an adjustable jack for construction, which has the following beneficial effects: the first support rod and the second support rod in the adjustable jack are telescopically connected, the rotary adjustment nut and the first support rod are sequentially sleeved on the outer side of the second support rod from bottom to top, the rotary adjustment nut is threadedly connected to the second support rod, the upper end of the rotary adjustment nut is abutted against the bottom of the first support rod, the positioning screw passes through the first support rod and abuts against the outer side of the second support rod, and adopts a threaded connection method, by setting the rotary adjustment nut to be threadedly connected to the outer side of the second support rod, when the rotary adjustment nut is rotated, the rotary adjustment nut can move upward or downward, thereby supporting the first support rod to move upward or downward, thereby realizing fine adjustment of the height of the first support rod, and after adjusting to the height required for construction requirements, the positioning screw is tightened to position and fix it, thereby meeting the on-site construction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] In the figure, 1-first support rod, 2-second support rod, 3-rotation adjustment nut, 4-positioning screw, 5-positioning groove, 6-screw through hole, 7-rotation adjustment handle, 8-handle through hole, 9-first connecting plate, 10-second connecting plate, 11-connecting through hole, 12-locking hook. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0019] like Figure 1 As shown, the adjustable jack for construction includes a first support rod 1, a second support rod 2, a rotation adjustment nut 3 and a positioning screw 4. The first support rod 1 is telescopically connected to the second support rod 2. The rotation adjustment nut 3 and the first support rod 1 are sequentially sleeved on the outer side of the second support rod 2 from bottom to top. The rotation adjustment nut 3 is threadedly connected to the second support rod 2. The upper end of the rotation adjustment nut 3 abuts against the bottom of the first support rod 1. The positioning screw 4 penetrates the first support rod 1 and abuts against the outer side of the second support rod 2. It can be understood that the bottom of the first support rod 1 is provided with a plug-in groove for the second support rod 2 to be inserted. The first support rod 1 is slidably sleeved on the outer side of the second support rod 2; the first support rod 1, the second support rod 2, the rotation adjustment nut 3 and the positioning screw 4 can all be made of aluminum alloy or the like.

[0020] Specifically, the outer side of the second support rod 2 is provided with an external thread, the inner side of the rotation adjustment nut 3 is provided with an internal thread matched with the external thread, the outer side of the second support rod 2 is provided with a plurality of positioning grooves 5 matched with the positioning nut 4, and the end of the positioning screw 4 is inserted into the positioning groove 5; the outer side of the first support rod 1 is provided with a screw through hole 6 for the positioning screw 4 to be inserted, the inner peripheral wall of the screw through hole 6 is provided with an internal thread, and the outer peripheral wall of the positioning screw 4 is provided with an external thread matched with the internal thread; the outer side of the rotation adjustment nut 3 A rotation adjustment handle 7 is provided, and a handle through hole 8 is provided on the rotation adjustment handle 7 to facilitate pulling the rotation adjustment nut 3; a first connecting plate 9 is provided at the upper end of the first support rod 1, and a second connecting plate 10 is provided at the bottom of the second support rod 2. A plurality of connecting through holes 11 are provided on the first connecting plate 9 and the second connecting plate 10 to facilitate subsequent installation and fixation; a locking hook 12 adapted to the outer side of the rotation adjustment nut 3 is also rotatably installed on the outer side of the bottom of the first support rod 1, which is used to lock the rotation adjustment nut 3 and thereby fix it.

[0021] It can be understood that the present invention has a reasonable design and a unique structure. By setting a rotary adjustment nut 3 threadedly connected to the outer side of the second support rod 2, when the rotary adjustment nut 3 is rotated, the rotary adjustment nut 3 can move upward or downward, thereby supporting the first support rod 1 to move upward or downward, thereby realizing fine adjustment of the height of the first support rod 1. After adjusting to the height required by the construction requirements, it is positioned and fixed by tightening the positioning screw 4, thereby meeting the on-site construction needs.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An adjustable jack for construction, characterized in that: It includes a first support rod, a second support rod, a rotation adjustment nut and a positioning screw. The first support rod is telescopically connected to the second support rod. The rotation adjustment nut and the first support rod are sequentially sleeved on the outer side of the second support rod from bottom to top. The rotation adjustment nut is threadedly connected to the second support rod. The upper end of the rotation adjustment nut is against the bottom of the first support rod. The positioning screw passes through the first support rod and is against the outer side of the second support rod.

2. The adjustable jack for construction according to claim 1, characterized in that: The outer side of the second support rod is provided with an external thread, and the inner side of the rotary adjustment nut is provided with an internal thread matched with the external thread.

3. The adjustable jack for construction according to claim 1, characterized in that: The outer side of the second support rod is provided with a plurality of positioning grooves matched with the positioning nut, and the end of the positioning screw is inserted into the positioning groove.

4. The adjustable jack for construction according to claim 1, characterized in that: A screw through hole for inserting the positioning screw is formed on the outer side of the first support rod, an inner peripheral wall of the screw through hole is provided with an internal thread, and an outer peripheral wall of the positioning screw is provided with an external thread matched with the internal thread.

5. The adjustable jack for construction according to claim 1, characterized in that: A rotation adjustment handle is arranged on the outer side of the rotation adjustment nut, and a handle through hole is opened on the rotation adjustment handle. A lock hook adapted to the outer side of the rotation adjustment nut is also rotatably mounted on the outer side of the bottom of the first support rod.

6. The adjustable jack for construction according to claim 1, characterized in that: A first connecting plate is disposed at the upper end of the first supporting rod, and a second connecting plate is disposed at the bottom of the second supporting rod. Both the first connecting plate and the second connecting plate are provided with a plurality of connecting through holes.

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