CN112127272B - Expansion joint device and arrangement method - Google Patents

Abstract

The invention relates to the field of machinery, and specifically discloses an expansion joint device and an arrangement method. In the invention, the roller device is placed in the expansion joint, the impact part of the vehicle on the expansion joint is converted into the kinetic energy of the roller in the expansion joint through the roller, and the roller with a suitable radius is selected during the installation process to adjust its height relative to the ground. The horizontal gap between the expansion joint and the relative expansion joint reduces the actual impact of the vehicle on the expansion joint. While protecting the expansion joint device, it also reduces the impact of the expansion joint on the vehicle and improves the comfort of the vehicle when passing through the expansion joint. The device of the invention is simple, easy to install and easy to adjust.

Description

A kind of expansion joint device and arrangement method

technical field

The invention relates to the field of machinery, in particular to an expansion joint device and an arrangement method.

Background technique

Expansion joints are mainly used to prevent damage caused by excessive thermal expansion and contraction of building structures caused by temperature changes. Pavement expansion joints are widely used in roadside laying and rectification projects.

The traditional expansion joints are subject to the impact force of the wheels of the driving vehicle, and damage often occurs. At the same time, the expansion joints will also have a certain impact on the vehicle, making the vehicle less comfortable when passing through the expansion joints.

Patent CN201920082011.7 discloses a highway bridge expansion joint, which includes an expansion joint main body, an expansion joint connecting device and a main body fixing hole. The bottom of the expansion joint main body is movably connected with an expansion joint fixing plate, and the inner middle part of the expansion joint main body is movably connected with an expansion joint. The expansion joint connecting device, the bottom of the main body of the expansion joint is fixedly connected with the main body support plate, the middle part of the main body of the expansion joint is movably connected with the main expansion plate, the top of the main body of the expansion joint is fixedly connected with a noise reduction layer, and the noise reduction layer can reduce the generated noise. The noise is reduced. When the vehicle passes by, the noise generated by the expansion joint of the highway bridge will pass through the through holes in the noise reduction layer to reduce or eliminate the generated noise, and when the vehicle passes through the expansion joint of the highway bridge, the expansion and contraction of the highway bridge will be slowed down. The amplitude of the joint shaking reduces the wear of the internal components of the expansion joint of the highway bridge, effectively ensuring the durability of the expansion joint of the highway bridge. However, it has not made improvements on how to reduce the impact force of the wheels on the expansion joint device, and at the same time increase the stability of the vehicle when passing the speed bump. There are few solutions to this problem, which needs to be solved urgently.

To sum up, there is a need for an expansion joint that can reduce the impact force of the wheel and at the same time improve the comfort of the vehicle when passing through the expansion joint.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides an expansion joint device and an arrangement method, which converts the impact energy of the vehicle on the expansion joint into the kinetic energy of the roller in the expansion joint, relatively weakens the actual impact of the vehicle on the expansion joint, and protects the expansion joint. At the same time, the impact of the expansion joint on the vehicle is also weakened, and the comfort of the vehicle when passing through the expansion joint is improved.

One of the objects of the present invention is to provide a kind of expansion joint device, and the specific technical scheme is as follows:

An expansion joint device, the expansion joint device comprises a first roller, a second roller, a roller, a roller bracket, a front expansion joint steel plate and a rear expansion joint steel plate, the roller bracket is located on the first roller and both ends of the second roller, the second roller is located at the center of the first roller, the second roller penetrates through the corresponding hole of the roller bracket, and the second roller can be relative to the bracket hole. Rotating; the roller support is fixedly connected with the front expansion joint steel plate, and the rear expansion joint steel plate is located on the other side of the expansion joint relative to the front expansion joint steel plate.

Further, the second roller is rotatable relative to the first roller.

Further, the front telescopic steel plate and the rear telescopic steel plate are fixed in the concrete by steel bars.

Further, the expansion joint device further includes a water stop belt, and the water stop belt is located at the road gap below the first roller.

The second purpose of the present invention is to provide the application of the expansion joint device in the above solution in installing expansion joints on speed-limiting road surfaces.

The third purpose of the present invention is to provide the installation and arrangement method of the expansion joint device in the above scheme, and the specific technical scheme is as follows:

The arrangement method of the expansion joint device described in the above scheme includes the following steps:

(1) Install the front expansion joint steel plate and the rear expansion joint steel plate at both ends of the expansion joint, and the rear expansion joint steel plate is installed at the end that first comes into contact with the wheel;

(2) selecting the radius of the first roller according to the width of the expansion joint;

(3) Adjust the horizontal clear distance between the rear telescopic steel plate and the first roller according to the width of the expansion joint;

(4) Adjust the height between the upper edge of the first roller and the horizontal road surface according to the vehicle speed limit.

Further, the radius of the first roller is R, the horizontal clear distance between the rear expansion joint steel plate and the first roller is A, and the R>9A.

Further, the height between the upper edge of the first roller and the horizontal road surface is B, 0.05<B<0.1R.

Further, when the vehicle speed limit V≥100km/h, B=0.05R.

Further, when the vehicle speed limit V≤50km/h, B=0.1R.

Further, when the vehicle speed limit is 50km/h<V<100km/h, 0.05R<B<0.1R.

The advantages of the present invention are that: this solution converts the impact of the vehicle on the expansion joint into the kinetic energy of the rollers in the expansion joint, which relatively weakens the actual impact of the vehicle on the expansion joint. While protecting the expansion joint device, it also weakens the The impact of the expansion joint on the vehicle improves the comfort of the vehicle when passing through the expansion joint, and the device is easy to install and easy to adjust in practice. It can also be combined with the speed limit of the vehicle on the road section, and the appropriate roller installation height is selected to improve its service life. .

Description of drawings

FIG. 1 is a schematic structural diagram of an expansion joint device of the present invention.

Figure 2 is a partial view of the installation position of the expansion joint device of the present invention

FIG. 3 is a force diagram of the expansion joint device of the present invention when it contacts a wheel.

FIG. 4 is a partial view of the force when the expansion joint device of the present invention contacts the wheel.

Fig. 5 is a schematic diagram of a common expansion joint contacting a wheel.

In the figure, 1-first roller, 2-second roller, 3-roller bracket, 4-front expansion joint steel plate, 5-rear expansion joint steel plate, 6-waterstop, 7-wheel.

Detailed ways

The present invention will be described in further detail below through the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. Those skilled in the art should understand that in the The details and forms of the technical solutions of the present invention may be modified or replaced without departing from the structural ideas and scope of use of the present invention, but these modifications and replacements all fall within the protection scope of the present invention.

Example

The expansion joint device of the present invention is described with reference to FIG. 1 . The present invention mainly adds a cylindrical roller with a radius R at the expansion joint, that is, the first roller 1 of the present invention. The second roller penetrates through the inside of the first roller 1 and through the hole of the roller support 3 , and can rotate relative to the first roller 1 and the hole of the roller support 3 . The roller bracket 3 is fixed on the front expansion joint steel plate 4, and the front expansion joint steel plate 4 and the rear expansion joint steel plate 5 are fixed in the respective side concrete bodies by steel bars or other forms. In order to prevent water and sundries from polluting the abutment, a waterstop 6 is set between the two concrete areas to discharge water in a centralized manner.

In the actual installation process, the rear expansion joint steel plate 5 should be installed at the front end of the vehicle running direction, that is, the end that first contacts the wheel. As shown in the partial view of Figure 2, the horizontal clear distance between the rear expansion joint steel plate 5 and the first roller 1 is A, and the height between the upper edge of the first roller 1 and the horizontal road is B, where R>9A, 0.05< B<0.1R. The expansion joint device of the present invention is adjusted by the speed limit of the speed limit section. When the vehicle speed limit V≥100km/h, B=0.05R, and when the vehicle speed limit V≤50km/h, B=0.1R. When the vehicle speed limit is 50km/h<V<100km/h, 0.05R<B<0.1R.

When the vehicle passes through the expansion joint, the wheel 6 is in contact with the first roller 1, and an interaction force is generated. F ₁ is the radial force of the wheel 6 on the first roller 1, passing through the center of the cross-section of the first roller 1; F ₂ is the tangential force of the wheel 6 on the first roller 1, F ₂ and the first roller 1 The cross sections are tangent. F2 can make the first roller ₁ rotate, so when the wheel 6 passes through the expansion joint, a part of the impact of the wheel on the expansion joint is converted into the kinetic energy of the first roller 1, as shown in FIG. 3 .

W ₁ -W ₂ =W ₃

W ₁ : the total impact energy of the wheel on the expansion joint; W ₂ : the kinetic energy of the first roller; W ₃ : the actual impact energy of the wheel on the expansion joint.

Figure 4 shows the contact form between the wheel and the front telescopic steel plate 4 in the present invention, the contact surface between the wheel 7 and the front telescopic steel plate 4 is a tangential cylindrical surface, and Figure 5 shows the contact form between the wheel 7 and the front steel plate in the traditional expansion joint , the contact surface between the wheel and the steel plate is flat. Compared with the two, compared with the traditional front side steel plate, the large roller of the present invention is cylindrical, which can provide better buffering when contacting with the wheel, and increase the stability of the vehicle when passing the speed bump.

In summary, this solution converts the impact of the vehicle on the expansion joint into the kinetic energy of the rollers in the expansion joint, which relatively weakens the actual impact of the vehicle on the expansion joint. While protecting the expansion joint device, it also reduces the impact of the expansion joint on the vehicle. Impact, improve the comfort of the vehicle when passing through the expansion joints.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. within.

Claims (6)

1. An expansion joint device, characterized in that the expansion joint device comprises a first roller (1), a second roller (2), a roller support (3), a front expansion joint steel plate (4) and The rear expansion joint steel plate (5), the second roller (2) is located at the center of the first roller (1), and the second roller (2) penetrates through the hole corresponding to the roller bracket (3) , the roller support (3) is located at both ends of the first roller (1) and the second roller (2), and the second roller (2) is rotatable relative to the hole of the roller support (3) ; the roller support (3) is fixedly connected with the front expansion joint steel plate (4), and the rear expansion joint steel plate (5) is located on the other side of the expansion joint relative to the front expansion joint steel plate (4); so The second roller (2) is rotatable relative to the first roller (1); the expansion joint device further comprises a water stop belt (6), and the water stop belt (6) is located on the first roller (1) The lower road surface gap; the upper edge of the first roller (1) is higher than the horizontal road surface. 2 . The expansion joint device according to claim 1 , wherein the front expansion joint steel plate ( 4 ) and the rear expansion joint steel plate ( 5 ) are fixed in concrete by steel bars. 3 . 3. Application of the expansion joint device according to any one of claims 1-2 in installing expansion joints on speed-limited road surfaces. 4. The method for arranging the expansion joint device according to any one of claims 1-2, wherein the method comprises the following steps: (1) Install the front expansion joint steel plate (4) and the rear expansion joint steel plate (5) at both ends of the expansion joint, and the rear expansion joint steel plate (5) is installed at the end that first comes into contact with the wheel; (2) selecting the radius of the first roller (1) according to the width of the expansion joint; (3) Adjust the horizontal clear distance between the rear expansion joint steel plate (5) and the first roller (1) according to the expansion joint width; (4) Adjust the height of the upper edge of the first roller (1) and the horizontal road surface according to the speed limit of the vehicle; the radius of the first roller (1) is R, and the rear expansion joint steel plate (5) is connected to the first roller (1). The horizontal clear distance of a roller (1) is A, the R>9A; the height of the upper edge of the first roller (1) and the horizontal road is B, 0.05<B<0.1R. 5. The arrangement method according to claim 4, characterized in that when the vehicle speed limit V≥100km/h, B=0.05R, and when the vehicle speed limit V≤50km/h, B=0.1R. 6 . The arrangement method according to claim 4 , wherein when the vehicle speed limit is 50km/h<V<100km/h, 0.05R<B<0.1R. 7 .

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