Dowel bar for building construction

Abstract

The utility model discloses a dowel bar for building construction, which comprises a transversely arranged bar body, a support cylinder is sleeved on the bar body in a sliding mode, the lower end of the support cylinder is fixedly connected with a vertically arranged support column, a sliding groove is arranged in the support column, the inner side wall of the sliding groove is connected with a sliding block in a sliding mode, and the sliding block is fixedly connected with the support column. A guide block is fixedly connected to the outer side wall of the sliding block, a guide groove corresponding to the guide block is formed in the inner side wall of the sliding groove, one end of the guide block slidably extends into the guide groove, a supporting rod is fixedly connected to the lower end of the sliding block, the lower end of the supporting rod slidably penetrates through the supporting column, and a lead screw is inserted into the upper end of the sliding block. The lead screw is in threaded connection with the sliding block, and the upper end of the lead screw is rotationally connected with the inner top of the sliding groove. The lifting device is simple and practical, through the arrangement of the supporting cylinder, the supporting rod and other mechanisms, the good supporting effect on the dowel bar can be achieved, lifting adjustment can be achieved according to the site, and practicability and convenience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dowel rods, in particular to a dowel rod for building construction. Background Art

[0002] Dowel bars are round steel bars placed at regular intervals along the transverse joints of cement concrete pavement slabs, located at the center of the slab thickness. One end of the dowel bar is fixed to the concrete slab, while the other end is slidably connected between the concrete slabs. Specifically, the dowel bar is located within the transverse joints and consists of a round steel bar with one end fixed to one slab and the other end slidably secured to the adjacent slab. This connection allows the dowel bar to effectively transfer vehicle loads between the two slabs while preventing misalignment.

[0003] During the construction process, dowel rods are usually installed by drilling holes in the formwork and inserting them during or after the concrete pouring. Due to the deadweight of the dowel rods, the concrete does not have sufficient bonding and supporting force to fix the dowel rods before initial setting, resulting in vertical deviation and movement of the dowel rods during installation and insertion, causing skew. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to propose a dowel rod for construction.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip.

[0007] Preferably, a plurality of arcuate grooves are provided on the inner side wall of the support tube, balls are rollingly connected to the inner side wall of the arcuate groove, and parts of the balls pass through the arcuate grooves.

[0008] Preferably, a triangular support block is fixedly connected between the outer side wall of the pillar and the lower end of the support tube.

[0009] Preferably, the upper end of the support rod is fixedly sleeved with a fixing ring, and the upper end of the fixing ring is fixedly connected to the lower end of the slider.

[0010] Preferably, a spirit level is fixedly connected to the upper end of the support tube.

[0011] Preferably, a rubber strip is fixedly connected to the outer side wall of the knob.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention provides good support for the force transmission rod by means of the support tube, support block, support column and support rod, thereby preventing the force transmission rod from tilting downward and causing the rod to become skewed. The invention can also be reused, thereby improving practicality.

[0014] 2. In the utility model, the setting of the knob, worm, worm wheel, screw and slider can be used to adjust the lifting and lowering according to the site, and the adjustability and convenience are improved; the utility model is simple and practical. Through the setting of the support tube and support rod and other mechanisms, it can not only provide good support for the force transmission rod, but also can be adjusted to the lifting and lowering according to the site, and the practicality and convenience are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a dowel rod for construction proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a dowel rod for construction proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of position A of a force transmission rod for construction proposed by the utility model.

[0018] In the figure: 1-rod body, 2-support cylinder, 3-ball, 4-level, 5-screw, 6-pillar, 7-slider, 8-fixing ring, 9-support block, 10-knob, 11-guide block, 12-support rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-3A force transmission rod for construction, comprising a horizontally arranged rod body 1, a support tube 2 is slidably sleeved on the rod body 1, for supporting the rod body 1, a level 4 is fixedly connected to the upper end of the support tube 2, for facilitating the user to observe the horizontal state, a plurality of arc-shaped grooves are provided on the inner side wall of the support tube 2, and a ball 3 is rollingly connected on the inner side wall of the arc-shaped groove to reduce the resistance when the support tube 2 is sleeved on the rod body 1, and a part of the ball 3 passes through the arc-shaped groove, and the lower end of the support tube 2 is fixedly connected to a vertically arranged pillar 6 for supporting the support tube 2, and a triangular support block 9 is fixedly connected between the outer side wall of the pillar 6 and the lower end of the support tube 2 to further support the support tube 2;

[0021] In this embodiment, a slide groove is provided in the pillar 6, and a slider 7 is slidably connected to the inner wall of the slide groove to drive the support rod 12 to move up and down. A guide block 11 is fixedly connected to the outer wall of the slider 7 to cooperate with the guide groove to guide the slider 7 to move up and down. A guide groove corresponding to the guide block 11 is provided on the inner wall of the slide groove. One end of the guide block 11 slides and extends into the guide groove. The lower end of the slider 7 is fixedly connected to a support rod 12 to support the pillar 6. The lower end of the support rod 12 slides through the pillar 6. The upper end of the support rod 12 is fixedly sleeved with a fixing ring 8 to improve the firmness between the support rod 12 and the slider 7. The upper end of the fixing ring 8 is fixedly connected to the lower end of the slider 7.

[0022] In this embodiment, a screw 5 is inserted into the upper end of the slider 7 for driving the slider 7 to rise and fall. The screw 5 and the slider 7 are threadedly connected. The upper end of the screw 5 is rotatably connected to the inner top of the slide groove. The upper end of the screw 5 is fixedly sleeved with a worm gear 14 for driving the screw 5 to rotate. The helix angle of the worm 15 is less than the friction angle of the worm gear 14 and the worm 15, which is used to play a self-locking and anti-loosening role. A worm 15 corresponding to the worm gear 14 is provided in the slide groove for driving the worm gear 14 to rotate. One end of the worm 15 is rotatably connected to the inner side wall of the slide groove, and the other end of the worm 15 passes through the pillar 6 and is fixedly connected to the knob 10 for driving the worm 15 to rotate. The worm 15 and the pillar 6 are rotatably connected. A rubber strip is fixedly connected to the outer wall of the knob 10 for anti-slip when the knob 10 is rotated.

[0023] In this embodiment, after the rod body 1 is installed and inserted on the concrete pavement slab, the support tube 2 is slidably mounted on the rod body 1, and then the support rod 12 and the main body 6 support the rod body 1 to prevent it from falling or tilting. At the same time, the manual rotation of the knob 10 drives the worm 15 to rotate, and the engagement of the worm 15 with the worm wheel 14 drives the lead screw 5 to rotate. The lead screw 5 drives the slider 7 to rise and fall through the action of the threaded engagement (controlled by the user turning the knob 10 forward and reverse), and drives the support rod 12 to rise and fall through the slider 7, thereby adjusting the support height of the support tube 2 according to the terrain.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A force transmission rod for construction, comprising a rod body (1) arranged transversely, characterized in that: The rod body (1) is provided with a support tube (2) on a sliding sleeve, the lower end of the support tube (2) is fixedly connected to a vertically arranged pillar (6), a slide groove is provided in the pillar (6), a slider (7) is slidably connected to the inner side wall of the slide groove, a guide block (11) is fixedly connected to the outer side wall of the slider (7), a guide groove corresponding to the guide block (11) is provided on the inner side wall of the slide groove, one end of the guide block (11) slides and extends into the guide groove, the lower end of the slider (7) is fixedly connected to a support rod (12), the lower end of the support rod (12) slides through the support rod (11), and the guide block (11) is provided with a guide groove corresponding to the guide block (11). The upper end of the slider (7) is provided with a screw (5), the screw (5) and the slider (7) are threadedly connected, the upper end of the screw (5) is rotatably connected to the inner top of the slide, the upper end of the screw (5) is fixedly sleeved with a worm wheel (14), the slide is provided with a worm (15) corresponding to the worm wheel (14), one end of the worm (15) is rotatably connected to the inner side wall of the slide, the other end of the worm (15) passes through the pillar (6) and is fixedly connected to the knob (10), and the worm (15) and the pillar (6) are rotatably connected.

2. A dowel rod for construction according to claim 1, characterized in that: A plurality of arcuate grooves are provided on the inner side wall of the support tube (2), and balls (3) are rollingly connected to the inner side wall of the arcuate groove, with parts of the balls (3) passing through the arcuate groove.

3. The dowel rod for construction according to claim 1, characterized in that: A triangular support block (9) is fixedly connected between the outer side wall of the support column (6) and the lower end of the support tube (2).

4. The dowel rod for construction according to claim 1, characterized in that: The upper end of the support rod (12) is fixedly sleeved with a fixing ring (8), and the upper end of the fixing ring (8) is fixedly connected to the lower end of the slider (7).

5. The dowel rod for construction according to claim 1, characterized in that: The upper end of the support tube (2) is fixedly connected with a level (4).

6. The dowel rod for construction according to claim 1, characterized in that: A rubber strip is fixedly connected to the outer side wall of the knob (10).

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