CN104790530B - Vertical adjustment device of structural support - Google Patents

Abstract

The invention provides a vertical adjustment device of a structural support. The vertical adjustment device comprises an upper screw rod and a lower screw rod which are opposite in thread direction, and the two screw rods are connected through a middle adjustment sleeve. The support is vertically adjusted through the pipe wrench adjustment sleeve. The vertical adjustment device of the structural support overcomes the defects of an existing device, and is suitable for long-time load sustaining, adjustment is easy, anchoring of the support and the ground and the upper structure cannot be influenced, and the device can be widely applied to mounting of light houses in the field of building structures and assembling of heavy equipment in the field of machine manufacturing.

Description

A vertical adjustment device for a structural support

technical field

The invention belongs to the technical field of building structure construction and mechanical equipment installation, and relates to a height adjustment device for structure construction and equipment installation, in particular to a vertical height adjustment device for small buildings and equipment supports.

Background technique

The adjustment of the support is very important for the construction of the structure and the installation of the equipment. In the field of structural engineering, structures such as green houses, temporary houses, and movable buildings are increasingly used. They generally adopt light and light structural forms, which require safe, convenient, and fast construction, and try to avoid large foundation earthwork workload. Therefore, there is a large demand for column foot supports that are quickly adjustable, convenient in construction, and reliable in strength. In the field of mechanical equipment installation, especially for equipment installations requiring high levelness of the base, such vertical adjustment equipment is also required.

At present, the vertical adjustment devices used for structure and equipment installation are mostly jacks and adjusting screw. Among them, the jack equipment is not suitable for use as a long-term support, and the existing adjusting screw is difficult to adjust under load, and The supporting position is easy to shift, and there are obvious defects. Therefore, there is an urgent need for a better vertical adjustment device to solve the difficulties in existing structures and equipment installation.

Contents of the invention

Aiming at the deficiencies of the currently visible vertical adjustment devices, the present invention provides a novel vertical adjustment device for structural supports and an installation and adjustment method thereof.

The invention provides a vertical adjustment device for a structural support, which comprises two upper and lower screw rods with opposite screw threads, which are connected by a central adjustment sleeve. Adjust the sleeve with a pipe wrench for vertical adjustment of the stand.

The invention also provides an installation and adjustment method for the vertical adjustment device of the structural support. Due to the structural characteristics different from the existing devices, the vertical adjustment device of the structural support is suitable for long-term load bearing, easy to adjust, and will not affect the anchorage between the support and the ground and the superstructure.

Description of drawings

Fig. 1 is a longitudinal sectional view illustrating a vertical adjustment device for a structural support according to a specific embodiment of the present invention.

Fig. 2 is a cross-sectional view of the sleeve of the vertical adjustment device for the structural support shown in Fig. 1 .

detailed description

Before further describing the present invention, it should be understood that the present invention is not limited to the following specific embodiments of the invention. At the same time, it should also be understood that the terminology used herein is only used to describe specific implementations, and is not used to limit the scope of protection claimed in the present application.

In a specific embodiment of the present invention, as shown in Figure 1, the vertical adjustment device for the structural support includes:

The first screw 100a and the second screw 100b are respectively arranged on the upper part and the lower part of the adjusting device, and the thread directions of the first screw 100a and the second screw 100b are opposite;

The sleeve 200 is arranged in the middle of the adjustment device, the sleeve has an internal thread, and connects the first screw 100a and the second screw 100b through the internal thread;

The first end portion 110a and the second end portion 110b are respectively arranged at the upper end and the lower end of the adjusting device, and are respectively connected with the first screw rod 100a and the second screw rod 100b;

Wherein, when the adjustment device reaches the lowest height that can be adjusted, the first screw 100a and the second screw 100b do not contact, and when the adjustment device reaches the highest height that can be adjusted, the first screw 100a A screw rod 100a and the second screw rod 100b are effectively connected to the sleeve 200 through threads respectively, so as to realize the vertical adjustment function of the structural support of the adjustment device.

Preferably, the first screw 100a and the first end 110a are integrally constructed, and the second screw 100b and the second end 110b are integrally constructed.

Preferably, the threads of the first screw 100a and the second screw 100b are trapezoidal threads.

When the adjustment device reaches the lowest height that can be adjusted, the distance between the threads of the first screw 100a and the second screw 100b is kept without contact, and when the adjustment device reaches the highest height that can be adjusted At this time, the threads of the first screw 100 a and the second screw 100 b maintain their respective effective connection lengths with the sleeve 200 .

When the adjusting device reaches the minimum height that can be adjusted, the distance between the threads of the first screw 100a and the second screw 100b is at least 5 mm, and when the adjusting device reaches the adjustable height At the highest height, the respective effective connection lengths between the first screw 100a and the second screw 100b and the sleeve 200 are greater than the nominal diameter of the screws.

Preferably, the outer section of the sleeve 200 has a large hexagonal shape (see FIG. 2 ).

Preferably, stiffening ribs 115a, 115b are respectively provided at the first end portion 110a and the second end portion 110b to increase the strength and stability of the adjusting device.

In some specific embodiments of the present invention, the first end 110a is provided with a first connection element 118a to realize the connection between the adjustment device and the adjusted structure or equipment, and the second end 110b is provided with a second connection The element 118b is used to realize the anchored connection of the adjustment device with the base or the ground.

This device should be processed in the mechanical processing factory and transported to the site for installation. For the installation of building structures and equipment, the implementation method of using the adjustment device to adjust the vertical support of the support includes the following steps:

(1) According to the engineering requirements of building structure construction and mechanical equipment installation, select multiple vertical adjustment devices for the structural supports, and place them at the design positions of the supporting points;

(2) Adjust the multiple adjustment devices to the design heights at the design positions of their respective support points, and anchor them to the base surface or the ground respectively;

(3) Connect the adjusting device to the structure or equipment (not shown in the figure) above the support through its first end 110a, and half-tighten the connecting bolts to fix it;

(4) Measure the height of each of the adjustment devices, and adjust the height of the adjustment devices with a pipe wrench in the order from the inside to the periphery according to the needs of on-site construction;

(5) After the height adjustment is completed, screw all the connecting bolts in place.

If the original support cannot meet the construction requirements, for example, it cannot be adjusted or the elevation is limited, and the adjustment support needs to be replaced, the implementation method of using the adjustment device to adjust the support vertically includes the following steps:

(1) Adjust the adjustment device to the lowest height and place it near the original support;

(2) Gradually adjust the height of the adjusting device so that it is slightly higher than the height of the original support, so that the connection of the original support becomes invalid and the original support is removed;

(3) Use a pipe wrench to adjust the height of the adjustment device, and then connect the adjustment device to the upper structure.

If the requirements for the position of the support are very strict, a small jack can be used to lift the structure, take out the original support, and then place the adjusting device at the position of the original support, and finally complete the adjustment and installation.

In order to ensure that the adjustment device can be used normally, the following points should be noted:

(1) Thread design according to GB_T193-2003 and GB_T196-2003. In order to reduce the resistance during adjustment, sharp threads should not be used, trapezoidal threads should be used, and the maximum pitch allowed by the specification should be used.

(2) When the support device reaches the minimum height that can be adjusted, there should be no contact between the upper and lower threads, and the distance Δ between them should be kept at least 5mm (ie Δ _min ≥ 5mm).

(3) When the support device reaches the highest adjustable height, the upper and lower threads must be connected to the sleeve respectively, and the effective connection lengths L _{top, c} and L _{bot, c} must be greater than the nominal diameter D of the screw.

(4) When the thread length is sufficient, the adjustable height of the whole device is (L _t -2D-Δ _min ) mm. Therefore, the length of the sleeve and the screw should be adapted to the adjustment height requirement to ensure that the designed length of the sleeve and the threaded screw is applicable and economical.

(5) For the support device designed according to (1) to (4), its vertical bearing capacity should be equal to the net section bearing capacity of the screw: N=πfD ² /4.

(6) In order to facilitate the screwing and adjustment of the pipe wrench, the cross-section of the sleeve can be a large hexagonal cross-section that is easy to process, as shown in Figure 2.

(7) In order to ensure the strength and stability of the adjusting device, it is advisable to set structural stiffeners on the smooth circle of the screw.

In the above description, some preferred implementations have been specifically described, and some technical details are provided for the purpose of illustration, but those skilled in the art should be able to understand that the present invention can have various changes and more different Embodiments, and the details described herein can be quite changed without departing from the spirit and gist of the present invention, and thus should belong to the scope of protection claimed by the present application.

Claims (6)

1. a kind of structural bearings vertical adjustment mechanism, it includes：

First screw rod and the second screw rod, are respectively arranged at the upper and lower of the adjusting means, and first screw rod and Second screw flight is in opposite direction；

Sleeve, is arranged at the middle part of the adjusting means, and the sleeve has internal thread, and will be described by the internal thread First screw rod and second screw rod are coupled together；

First end and the second end, are respectively arranged at the top and bottom of the adjusting means, and respectively with described first Screw rod and second screw rod connect, wherein ribbed stiffener is provided with respectively in the first end and the second end, to increase Plus the strength and stability of the adjusting means；

Wherein, when the adjusting means reaches the minimum altitude that can be adjusted to, first screw rod and second screw rod are not Come in contact, when the adjusting means reaches the maximum height that can be adjusted to, first screw rod and second screw rod divide Not Tong Guo screw thread and the sleeve keep effectively connection, so as to the structural bearings vertical adjusting for realizing the adjusting means is acted on；

The first end is provided with the first connecting element with the fixation for realizing the adjusting means be conditioned structure or equipment Connection, the second end is provided with the second connecting element to realize the anchor connection of the adjusting means and basal plane or ground, So that the structural bearings vertical adjustment mechanism is suitable for and holding lotus for a long time and not interfering with bearing and basal plane or ground Anchoring and superstructure.

2. adjusting means according to claim 1, wherein first screw rod and first end are integrated construction, described Two screw rods and the second end are integrated construction.

3. adjusting means according to claim 1, wherein first screw rod and second screw flight are trapezoidal Screw thread.

4. adjusting means according to claim 1, wherein when the adjusting means reaches the minimum altitude that can be adjusted to, The spacing kept between first screw rod and second screw flight is at least 5mm, when the adjusting means reaches During to the maximum height that can be adjusted to, what first screw rod and second screw rod and the sleeve kept respective effectively connects Nominal diameter of the spreading degree more than screw rod.

5. adjusting means according to claim 1, wherein the outer cross section of the sleeve has the shape of big hexagonal.

6. the installation control method of structural bearings vertical adjustment mechanism described in a kind of any one of claim 1-5, it includes following Step：

(1) according to building structure construction and the engine request of mechanical equipment installation, from multiple adjusting meanss, and pacify respectively It is put in supporting-point design attitude；

(2) multiple adjusting meanss are adjusted to design height respectively in each residing supporting-point design attitude, and point Do not anchor with basal plane or ground；

(3) adjusting means is connected by the first end with bearing top structure or equipment, connecting bolt half is twisted, Play fixation；

(4) height of each adjusting means is measured, with reference to the demand of site operation, according to the order from inside to periphery, The height of the adjusting means is adjusted with pipe wrench；

(5) after the completion of height is adjusted, all connecting bolts are applied and is screwed into place.